A sloshing effect mitigation control method for a low-temperature working medium buffer storage tank

Abstract

The present application relates to the field of low temperature technology, and discloses a sloshing effect alleviation control method for a low-temperature working medium buffer storage tank, wherein different sloshing effect identification indexes of the buffer storage tank in passive evaporation state and disturbance evaporation state are determined by different potential working medium categories facing the buffer storage tank, and further, different sloshing effect identification indexes and different cold insulation layer categories are combined to control and alleviate the sloshing effect of the buffer storage tank in passive evaporation state and disturbance evaporation state respectively. Therefore, by implementing the present application, different identification indexes for measuring the sloshing effect are formulated differently by considering different potential working media, different evaporation states, and dynamic processes of evaporation and liquid introduction and discharge operation of the hydrogen liquefaction station, and then the sloshing effect of the buffer storage tank can be evaluated and alleviated in a clear and targeted manner, and the operation efficiency and safety benefits of potential working medium buffer storage of the hydrogen liquefaction station are improved to a certain extent.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cryogenic technology, and in particular to a sloshing effect mitigation control method for a buffer storage tank for a cryogenic working medium. BACKGROUND

[0002] With the development of the hydrogen energy market, the demand for liquid hydrogen in the civilian market is gradually increasing, and the construction scale of hydrogen liquefaction stations is expected to gradually expand.

[0003] The process media involved in the hydrogen liquefaction station, such as open cold cycle output products, pre-cooling working medium, instrument purge gas, and deep cooling equipment frozen storage gas, are often selected in the form of low-temperature liquid medium for long-term stable storage. When there is an emergency use demand, it is converted into a gaseous medium through the steps of rewarming and vaporization, and is released in small quantities in a short period of time. Compared with gaseous media, low-temperature liquid media have high specific gravity, compact equipment and system space, and small land occupation. However, the use of low-temperature liquid media in the hydrogen liquefaction station in the actual process, especially the medium and long-term storage process in the buffer storage system, will bring a series of challenges.

[0004] The existing research on the process and equipment safety of the buffer storage tank for the hydrogen liquefaction station focuses on the experimental measurement of the evaporation of the low-temperature liquid medium in the buffer storage tank (such as process gas evaporation rate, liquid level change rate, supporting load, outer tank wall impact force, inner tank wall internal pressure, and inner tank space pressure drop) and the corresponding experimental and numerical simulation comparison. However, these studies on the changes in physical parameters are mostly carried out under specific, extreme, and harsh laboratory conditions. For hydrogen liquefaction stations intended for commercial use, the environment of the buffer storage tank is not ideal. In fact, the evaporation in the buffer storage tank is not isolated, and the process is developed synchronously with the liquid introduction and discharge process. Moreover, the evaporation of different potential working media in the buffer storage tank differs greatly, and the evaporation risk induced by this difference is also different, which is closely related to the sloshing effect of the buffer storage tank. Currently, there is no technology that considers different potential working media, different evaporation states, dynamic processes facing evaporation and liquid introduction and discharge operations, differentiates the identification index for measuring the sloshing effect, and on this basis, clearly levels and targets the evaluation and mitigation of the sloshing effect of the buffer storage tank. SUMMARY

[0005] Therefore, the present application provides a sloshing effect mitigation control method for a buffer storage tank for a cryogenic working medium, to solve the problem that there is currently no technology that considers different potential working media, different evaporation states, dynamic processes facing evaporation and liquid introduction and discharge operations, differentiates the identification index for measuring the sloshing effect, and on this basis, clearly levels and targets the evaluation and mitigation of the sloshing effect of the buffer storage tank.

[0006] In a first aspect, the present application provides a sloshing effect mitigation control method for a low-temperature working medium buffer storage tank, the method comprising:

[0007] The potential working medium category to which the buffer storage tank to be evaluated faces and the cold insulation layer category of the buffer storage tank to be evaluated are obtained; based on the potential working medium category, a first sloshing effect identification index of the buffer storage tank to be evaluated in a passive evaporation state and a second sloshing effect identification index of the buffer storage tank to be evaluated in a disturbed evaporation state are respectively determined; based on the cold insulation layer category and the first sloshing effect identification index, the sloshing effect of the buffer storage tank to be evaluated in the passive evaporation state is controlled to be mitigated; and based on the cold insulation layer category and the second sloshing effect identification index, the sloshing effect of the buffer storage tank to be evaluated in the disturbed evaporation state is controlled to be mitigated.

[0008] The sloshing effect mitigation control method for a low-temperature working medium buffer storage tank provided by the present application determines different sloshing effect identification indexes of the buffer storage tank in a passive evaporation state and a disturbed evaporation state through different potential working medium categories to which the buffer storage tank to be evaluated faces, and further, the different sloshing effect identification indexes and different cold insulation layer categories are combined to respectively control the mitigation of the sloshing effect of the buffer storage tank in the passive evaporation state and the disturbed evaporation state. Therefore, by implementing the present application, different identification indexes for measuring the sloshing effect are differentiated by considering different potential working media, different evaporation states, and dynamic processes of evaporation and liquid introduction and discharge operations of the hydrogen liquefaction station, and the sloshing effect of the buffer storage tank can be hierarchically and specifically evaluated and mitigated, thereby improving the operation efficiency and safety benefits of the potential working medium buffer storage of the hydrogen liquefaction station to a certain extent.

[0009] In an optional embodiment, based on the potential working medium category, a first sloshing effect identification index of the buffer storage tank to be evaluated in a passive evaporation state and a second sloshing effect identification index of the buffer storage tank to be evaluated in a disturbed evaporation state are respectively determined, comprising:

[0010] When the potential working medium category is R508A or liquid nitrogen, the first sloshing effect identification index is determined to be a self-vibration risk, and the second sloshing effect identification index is determined to be a self-vibration risk and a forced vibration risk; when the potential working medium category is liquid hydrogen, the first sloshing effect identification index is determined to be a self-vibration risk and a flashing risk, and the second sloshing effect identification index is determined to be a self-vibration risk, a flashing risk, and a forced vibration risk.

[0011] The sloshing effect mitigation control method for the buffer storage tank of the cryogenic working medium provided by the application, if the potential working medium category is R508A or liquid nitrogen, the self-oscillation risk is considered when the sloshing effect evaluation is carried out in the passive evaporation state, and the self-oscillation risk and forced oscillation risk are considered when the sloshing effect evaluation is carried out in the disturbed evaporation state. Further, if the potential working medium category is liquid hydrogen, the self-oscillation risk and flashing risk are considered when the sloshing effect evaluation is carried out in the passive evaporation state, and the self-oscillation risk, flashing risk and forced oscillation risk are considered when the sloshing effect evaluation is carried out in the disturbed evaporation state. Therefore, by implementing the application, different potential working media, different evaporation states, dynamic processes of evaporation and liquid introduction and liquid discharge operations in the hydrogen liquefaction station are considered, and different identification indexes for measuring the sloshing effect are differentiated to provide support for subsequent targeted evaluation and mitigation of the sloshing effect of the buffer storage tank.

[0012] In an optional embodiment, based on the cold insulation layer category and the first sloshing effect identification index, the sloshing effect of the buffer storage tank to be evaluated in the passive evaporation state is controlled and mitigated, comprising:

[0013] Based on the cold insulation layer category and the first sloshing effect identification index, the sloshing effect of the buffer storage tank to be evaluated in the passive evaporation state is evaluated and the first mitigation control measure is determined; and the first mitigation control measure is used to control and mitigate the sloshing effect of the buffer storage tank to be evaluated in the passive evaporation state.

[0014] The sloshing effect mitigation control method for the buffer storage tank of the cryogenic working medium provided by the application, in combination with different cold insulation layer categories and corresponding first sloshing effect identification indexes, the sloshing effect of the buffer storage tank to be evaluated in the passive evaporation state can be evaluated, and further, the first mitigation control measure can be determined according to the evaluation result to control and mitigate the sloshing effect of the buffer storage tank to be evaluated in the passive evaporation state. Therefore, by implementing the application, the sloshing effect of the buffer storage tank can be evaluated and mitigated in a clear and targeted manner.

[0015] In an optional embodiment, based on the cold insulation layer category and the first sloshing effect identification index, the sloshing effect of the buffer storage tank to be evaluated in the passive evaporation state is evaluated and the first mitigation control measure is determined, comprising:

[0016] The first liquid level sloshing frequency and the first self-oscillation frequency of the buffer storage tank to be evaluated in the passive evaporation state are obtained; based on the cold insulation layer category and the first sloshing effect identification index, the first liquid level sloshing frequency and the first self-oscillation frequency are used to evaluate the sloshing risk of the buffer storage tank to be evaluated in the passive evaporation state, and a sloshing risk evaluation result is obtained; and based on the sloshing risk evaluation result, the first mitigation control measure is determined.

[0017] The application provides a sloshing effect alleviation control method for a low-temperature working medium buffer storage tank.

[0018] In an optional embodiment, the sloshing effect of the buffer storage tank to be evaluated in the disturbance evaporation state is controlled based on the cold insulation layer category and the second sloshing effect identification index, and the method comprises the following steps of:

[0019] The second liquid level sloshing frequency, the second self-vibration frequency, the external disturbance sloshing frequency and the external disturbance sloshing angle of repose of the buffer storage tank to be evaluated in the disturbance evaporation state are obtained, the sloshing risk of the buffer storage tank to be evaluated in the disturbance evaporation state is evaluated based on the cold insulation layer category and the second sloshing effect identification index, and the second alleviation control measure is determined by using the second liquid level sloshing frequency, the external disturbance sloshing frequency, the second self-vibration frequency and the external disturbance sloshing angle of repose, and the sloshing effect of the buffer storage tank to be evaluated in the disturbance evaporation state is controlled by using the second alleviation control measure.

[0020] The sloshing effect alleviation control method for the low-temperature working medium buffer storage tank provided by the application can evaluate the sloshing risk of the buffer storage tank to be evaluated in the disturbance evaporation state and determine the second alleviation control measure for controlling the sloshing effect of the buffer storage tank to be evaluated in the disturbance evaporation state. Therefore, by implementing the application, the sloshing effect of the buffer storage tank can be evaluated and alleviated in a clear and targeted manner.

[0021] In an optional embodiment, the method further comprises the following steps of:

[0022] The cold insulation performance of the buffer storage tank to be evaluated in the disturbance evaporation state is evaluated based on the potential working medium category and the cold insulation layer category, and a cold insulation performance evaluation result is obtained, and the normal operation state of the buffer storage tank to be evaluated is controlled based on the cold insulation performance evaluation result.

[0023] The sloshing effect alleviation control method for the low-temperature working medium buffer storage tank provided by the application can evaluate the cold insulation performance of the buffer storage tank to be evaluated based on different potential working medium categories and different cold insulation layer categories, and thus the normal operation state of the buffer storage tank can be controlled.

[0024] In an optional embodiment, the cold insulation performance of the buffer storage tank to be evaluated in the disturbance evaporation state is evaluated based on the potential working medium category and the cold insulation layer category, and a cold insulation performance evaluation result is obtained, and the normal operation state of the buffer storage tank to be evaluated is controlled based on the cold insulation performance evaluation result, and the method comprises the following steps of:

[0025] Based on the potential working medium category and the cold insulation layer category, temperature data and potential working medium boiling point data of the buffer storage tank to be evaluated in the disturbed evaporation state are obtained; based on the temperature data and the potential working medium boiling point data, the cold insulation performance of the buffer storage tank to be evaluated in the disturbed evaporation state is evaluated, and a cold insulation performance evaluation result is obtained.

[0026] In a second aspect, the present application provides a sloshing effect mitigation control device for a buffer storage tank of a cryogenic working medium, the device comprising:

[0027] The obtaining module is configured to obtain a potential working medium category to which the buffer storage tank to be evaluated faces and a cold insulation layer category of the buffer storage tank to be evaluated; the determining module is configured to determine, based on the potential working medium category, a first sloshing effect identification index of the buffer storage tank to be evaluated in a passive evaporation state and a second sloshing effect identification index of the buffer storage tank to be evaluated in a disturbed evaporation state, respectively; the first mitigation control module is configured to control mitigation of the sloshing effect of the buffer storage tank to be evaluated in the passive evaporation state based on the cold insulation layer category and the first sloshing effect identification index; and the second mitigation control module is configured to control mitigation of the sloshing effect of the buffer storage tank to be evaluated in the disturbed evaporation state based on the cold insulation layer category and the second sloshing effect identification index.

[0028] In a third aspect, the present application provides a computer device, comprising a memory and a processor, which are communicatively connected with each other, and the memory stores computer instructions; the processor executes the computer instructions to perform the sloshing effect mitigation control method of the buffer storage tank of the cryogenic working medium according to the first aspect or any one of the corresponding embodiments thereof.

[0029] In a fourth aspect, the present application provides a computer readable storage medium, which stores computer instructions for causing a computer to perform the sloshing effect mitigation control method of the buffer storage tank of the cryogenic working medium according to the first aspect or any one of the corresponding embodiments thereof.

[0030] In a fifth aspect, the present application provides a computer program product comprising computer instructions for causing a computer to perform the sloshing effect mitigation control method of the buffer storage tank of the cryogenic working medium according to the first aspect or any one of the corresponding embodiments thereof. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0032] Figure 1is a flowchart of a sloshing effect mitigation control method for a buffer storage tank for low-temperature working medium according to an embodiment of the present application;

[0033] Figure 2 is a structural diagram of a buffer storage tank according to an embodiment of the present application;

[0034] Figure 3 is a partial enlarged view of an evaporation line temperature monitoring device according to an embodiment of the present application;

[0035] Figure 4 is an outer contour dimensioning diagram of a buffer storage tank according to an embodiment of the present application;

[0036] Figure 5 is a partial enlarged view of a liquid introduction and liquid outlet side temperature and evaporated gas monitoring device according to an embodiment of the present application;

[0037] Figure 6 is a flowchart of another sloshing effect mitigation control method for a buffer storage tank for low-temperature working medium according to an embodiment of the present application;

[0038] Figure 7 is a P RDT and a relationship diagram of a liquid nitrogen evaporated gas diffusion tendency judgment factor Γ R508A in a buffer storage tank according to an embodiment of the present application;

[0039] Figure 8 is a P NDT and a relationship diagram of a liquid nitrogen evaporated gas diffusion tendency judgment factor Γ N2 in a buffer storage tank according to an embodiment of the present application;

[0040] Figure 9 is a P LDT and a relationship diagram of a liquid hydrogen evaporated gas diffusion tendency judgment factor Γ H2 in a buffer storage tank according to an embodiment of the present application;

[0041] Figure 10 is a flowchart of still another sloshing effect mitigation control method for a buffer storage tank for low-temperature working medium according to an embodiment of the present application;

[0042] Figure 11 is a P RFVT and a relationship diagram of a liquid nitrogen evaporated gas diffusion tendency judgment factor Γ R508A in a buffer storage tank according to an embodiment of the present application;

[0043] Figure 12 is a P NFVT and a relationship diagram of a liquid nitrogen evaporated gas diffusion tendency judgment factor Γ N2 in a buffer storage tank according to an embodiment of the present application;

[0044] Figure 13 is a P according to an embodiment of the present application LVFT a schematic diagram of the relationship between the liquid hydrogen evaporation gas diffusion tendency judgment factor Γ H2 in the buffer storage tank;

[0045] Figure 14 is a structure block diagram of the sloshing effect mitigation control device of the low-temperature working medium buffer storage tank according to an embodiment of the present application;

[0046] Figure 15 is a hardware structure schematic diagram of the computer device according to an embodiment of the present application. DETAILED DESCRIPTION

[0047] To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in connection with the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0048] The low-temperature liquid medium in the hydrogen liquefaction station continuously evaporates due to internal and external heat flow, and the evaporation gas gradually increases the internal pressure of the buffer storage system. When the internal pressure gradually increases to a certain extent, the gas release device near the liquid inlet and outlet device opens at random and closes in a short time, which makes the evaporation gas at the top of the buffer storage system have a large heat exchange gradient near the liquid inlet pipe and the liquid outlet pipe. If the monitoring is not strong and the control is not proper, liquid-solid mixed materials are easily induced, the mechanical properties of the internal support structure or the top release device are reduced, and the service life of the buffer storage system is adversely affected.

[0049] Compared with gaseous media, especially compared with high-pressure gaseous media, the liquid level fluctuation of low-temperature liquid media in the buffer storage system in the hydrogen liquefaction station is more obvious, which will combine with external disturbance to induce potential sloshing effect, help the heat convection and diffusion between the low-temperature liquid medium and the evaporation gas, and between the low-temperature liquid medium and the wall surface of the buffer storage system, promote the evaporation of the low-temperature liquid medium in the buffer storage system, intensify the generation of liquid-solid mixed materials at the top of the buffer storage system, and bring negative effects to the long-term reliable operation of the buffer storage system. If the frequency of the sloshing motion is close to the natural frequency of the buffer storage system to a certain extent, resonance sloshing with a larger influence degree may be induced, the boiling point of the low-temperature liquid medium changes, flash evaporation or even severe phase change is induced, the buffer storage system in the hydrogen liquefaction station is unstably operated, and further serious consequences of a large decline in the technical and economic benefits of the hydrogen liquefaction system are caused.

[0050] Therefore, for a hydrogen liquefaction station to be put into commercial use, it is necessary to face a typical potential cryogenic working medium of the hydrogen liquefaction station, combine different evaporation states in the buffer storage tank with liquid lead-out and liquid discharge operations, monitor specific temperatures, evaporation gas concentrations and other process parameters of the upper head of the buffer storage tank near the liquid lead-out and liquid discharge side and the liquid medium evaporation line, and further guide the evaluation and mitigation process technology of the sloshing effect on this basis.

[0051] According to the embodiment of the present application, a sloshing effect mitigation control method for a buffer storage tank for a cryogenic working medium is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described herein can be executed in a different order.

[0052] In this embodiment, a sloshing effect mitigation control method for a buffer storage tank for a cryogenic working medium is provided, which can be used in electronic devices such as computers, mobile phones, tablet computers, etc. Figure 1 The flowchart of the sloshing effect mitigation control method for a buffer storage tank for a cryogenic working medium according to the embodiment of the present application is shown in Figure 1 The flowchart includes the following steps:

[0053] Step S101, obtaining the potential working medium category faced by the buffer storage tank to be evaluated and the cold insulation layer category of the buffer storage tank to be evaluated.

[0054] Specifically, the potential working medium category can include R508A, liquid nitrogen, and liquid hydrogen; and the cold insulation layer category can include high vacuum multilayer insulation and perlite.

[0055] Further, as shown in Figure 2 The buffer storage tank can include an external disturbance balancer 1, an internal and external tank insulation layer 2, a liquid level disturbance monitor 3, an external tank rigid support 4, an internal tank flexible support 5, an evaporation line temperature monitoring device 6, a liquid lead-out and liquid discharge side temperature and evaporation gas monitoring device 7, a liquid discharge pipe 8, a liquid lead-in pipe 9, a disturbance frequency signal receiving and processing device 10, a temperature signal receiving and processing device 11, and a gas content signal receiving and processing device 12.

[0056] The external disturbance balancer 1 is used to monitor the external disturbance sloshing frequency and the external disturbance sloshing angle, and the balancer contains a damping exciter (with gradual and strong control modes) therein.

[0057] Further, the cold insulation layer 2 between the inner tank and the outer tank is used to keep the buffer storage tank cold and maintain the vacuum degree; the liquid level disturbance monitor 3 is used to monitor the liquid level sloshing frequency; the outer tank rigid support 4 is used to rigidly support the whole tank (including the outer tank and the inner tank) gravity; the inner tank flexible support 5 is used to flexibly connect the inner tank and the outer tank; the liquid outlet pipe 8 is used to output liquid and prevent overpressure in the buffer tank; the liquid inlet pipe 9 is used to introduce liquid; the disturbance frequency signal receiving and processing device 10 is used to receive external disturbance sloshing frequency and liquid level sloshing frequency signals and process and output the same; the temperature signal receiving and processing device 11 is used to receive temperature signals and process and output the same; and the gas content signal receiving and processing device 12 is used to receive gas content signals and process and output the same.

[0058] Further, as shown in Figure 3 , the evaporation line temperature monitoring device 6 is distributed in a non-equidistant manner along the evaporation direction of the liquid medium in the buffer storage tank, wherein the temperature monitoring device closest to the joint line between the bottom end of the upper head transition section of the inner tank and the cylinder is denoted as TC V1 , and there are TC V2 ~TC V16 in turn along the reverse direction of the evaporation direction of the liquid medium.

[0059] Further, as shown in Figure 4 , h in represents the height of the inner tank of the buffer storage tank; h ipr represents the height of the top support pipe rack of the inner tank of the buffer storage tank; r inma represents the inner diameter of the long axis of the inner tank head; and r inmi represents the inner diameter of the short axis of the inner tank head. Further, the distance of the device from the joint line between the bottom end of the upper head transition section of the inner tank and the cylinder depends on the potential working medium category facing the buffer storage tank, for example, the potential working medium is R508A, liquid nitrogen, and the distance is: For example, the potential working medium is liquid hydrogen, and the distance is:

[0060] Specifically, for R508A, liquid nitrogen, the distances between TC V1 ~TC V16 are as follows:

[0061] Further, for liquid hydrogen, the distances between TC V1 ~TC V16 are as follows:

[0062] Further, for R508A, n = 16.

[0063] Further, for liquid nitrogen, n = 20, and the distances between TC V16 ~TC V20 are as follows:

[0064] Furthermore, for liquid hydrogen, n = 25, TC V16 ~TC V25 The distances between them are as follows:

[0065] Furthermore, such as Figure 5 As shown, the top of the liquid inlet / outlet side temperature and evaporation gas monitoring device 7 is installed along the inner wall of the upper head of the buffer storage tank. Among them, the three closest to the central axis of the upper head are evaporation gas monitoring devices, which are labeled BG sequentially from the liquid inlet end (left side in the figure) to the liquid outlet end (right side in the figure). h1 BG h2 BG h3 BG h2 Regarding the buffer storage tank, the inner tank's central axis is symmetrically distributed, BG h1 Right side to BG h2 Left side, and BG h2 Right side to BG h3 The distances on the left are all At the inlet end (excluding BG) h2 ), except for BG h1 All other monitoring devices are temperature monitoring devices. The temperature monitoring device closest to the liquid inlet (shown on the far left in the diagram) is TC. h1 If the potential working fluid is R508A or liquid nitrogen, then k = 6, meaning the temperature monitoring device at the liquid inlet is TC. h1 TC h2 TC h3 The temperature monitoring device at the liquid outlet is TC. h4 TC h5 TC h6 TC h3 Left side to TC h2 Right side, TC h2 Left side to TC h1 Right side, TC h4 Right side to TC h5 Left side, TC h5 Left side to TC h6 The distances on the right are all If the potential working fluid is liquid hydrogen, then k = 10, meaning the temperature monitoring device at the liquid inlet is TC. h1 TC h2 TC h3 TC h4 TC h5 The temperature monitoring device at the liquid outlet is TC. h6 TC h7 TC h8, TC h9 , TC h10 . TC h5 left side to TC h4 right side, TC h4 left side to TC h3 right side, TC TC h3 left side to TC h2 right side, TC h2 left side to TC h1 right side, TC TC h6 right side to TC h7 left side, TC h7 right side to TC h8 left side, TC TC h8 right side to TC h9 left side, TC h9 left side to TC h10 right side, TC

[0066] In step S102, based on the potential working medium category, a first sloshing effect identification index of the buffer storage tank to be evaluated in a passive evaporation state and a second sloshing effect identification index of the buffer storage tank to be evaluated in a disturbance evaporation state are respectively determined.

[0067] Specifically, in the passive evaporation state, the external disturbance is small, so the external disturbance is ignored, and only the influence of the liquid level change in the buffer storage tank on the sloshing is considered; in the disturbance evaporation state, the influence of the liquid level change in the buffer storage tank and the external disturbance on the sloshing is considered.

[0068] Specifically, in different passive evaporation states and disturbance evaporation states, different potential working medium categories have different influences on the sloshing effect of the buffer storage tank to be evaluated, so different identification indexes for measuring the sloshing effect are differentiated according to the dynamic process of the evaporation and liquid guiding and discharging operation of different potential working medium categories.

[0069] In step S103, based on the cold insulation layer category and the first sloshing effect identification index, the sloshing effect of the buffer storage tank to be evaluated in the passive evaporation state is controlled.

[0070] Specifically, in combination with different cold insulation layer categories and corresponding different first sloshing effect identification indexes, the sloshing effect of the buffer storage tank to be evaluated in the passive evaporation state can be evaluated and mitigated.

[0071] In step S104, based on the cold insulation layer category and the second sloshing effect identification index, the sloshing effect of the buffer storage tank to be evaluated in the disturbance evaporation state is controlled.

[0072] Specifically, the sloshing effect of the buffer storage tank to be evaluated under the disturbed evaporation state can be evaluated and mitigated by combining different cold insulation layer categories and corresponding different second sloshing effect identification indexes.

[0073] The sloshing effect mitigation control method of the buffer storage tank for low-temperature working medium provided by the embodiment can determine different sloshing effect identification indexes of the buffer storage tank under the passive evaporation state and the disturbed evaporation state according to different potential working medium categories facing the buffer storage tank, and further, the sloshing effect of the buffer storage tank under the passive evaporation state and the disturbed evaporation state can be respectively controlled and mitigated by combining different sloshing effect identification indexes and different cold insulation layer categories. Therefore, by implementing the present application, different identification indexes for measuring the sloshing effect are formulated in a differentiated manner by considering different potential working media, different evaporation states, and dynamic processes of evaporation and liquid introduction and discharge operations of the hydrogen liquefaction station, so that the sloshing effect of the buffer storage tank can be hierarchically and targetedly evaluated and mitigated, and the operation efficiency and safety benefits of the potential working medium buffer storage of the hydrogen liquefaction station are improved to a certain extent.

[0074] In the embodiment, a sloshing effect mitigation control method of a buffer storage tank for low-temperature working medium is provided, which can be used in electronic devices such as computers, mobile phones, tablet computers, etc. Figure 6 The flowchart of the sloshing effect mitigation control method of the buffer storage tank for low-temperature working medium according to the embodiment of the present application is shown in FIG. 1, which includes the following steps: Figure 6

[0075] In step S601, the potential working medium category facing the buffer storage tank to be evaluated and the cold insulation layer category of the buffer storage tank to be evaluated are obtained. For details, please refer to step S101 of the embodiment shown in FIG. 1, which will not be repeated here. Figure 1

[0076] In step S602, based on the potential working medium category, the first sloshing effect identification index of the buffer storage tank to be evaluated under the passive evaporation state and the second sloshing effect identification index of the buffer storage tank to be evaluated under the disturbed evaporation state are respectively determined.

[0077] Specifically, step S602 includes the following steps:

[0078] In step S6021, when the potential working medium category is R508A or liquid nitrogen, the first sloshing effect identification index is determined as the self-vibration risk, and the second sloshing effect identification index is determined as the self-vibration risk and the forced vibration risk.

[0079] Specifically, if the potential working medium category is R508A or liquid nitrogen, the sloshing effect of the buffer storage tank to be evaluated under the passive evaporation state can be measured by measuring the self-vibration risk.

[0080] ​​Further, the sloshing effect of the buffer storage tank to be evaluated under the disturbed evaporation state can be measured by measuring the self-oscillation risk and the forced-oscillation risk.

[0081] Step S6022, when the potential working medium category is liquid hydrogen, determining that the first sloshing effect identification index is the self-oscillation risk and the flash evaporation risk, and determining that the second sloshing effect identification index is the self-oscillation risk, the flash evaporation risk and the forced-oscillation risk.

[0082] Specifically, if the potential working medium category is liquid hydrogen, the sloshing effect of the buffer storage tank to be evaluated under the passive evaporation state can be measured by measuring the self-oscillation risk and the flash evaporation risk.

[0083] Further, the sloshing effect of the buffer storage tank to be evaluated under the disturbed evaporation state can be measured by measuring the self-oscillation risk, the flash evaporation risk and the forced-oscillation risk.

[0084] Step S603, controlling the sloshing effect of the buffer storage tank to be evaluated under the passive evaporation state based on the cold insulation layer category and the first sloshing effect identification index.

[0085] Specifically, the above-mentioned step S603 comprises:

[0086] Step S6031, evaluating the sloshing effect of the buffer storage tank to be evaluated under the passive evaporation state based on the cold insulation layer category and the first sloshing effect identification index, and determining the first relief control measure.

[0087] Specifically, in combination with different cold insulation layer categories and corresponding different first sloshing effect identification indexes, the sloshing effect of the buffer storage tank to be evaluated under the passive evaporation state can be evaluated, and corresponding first relief control measures can be further formulated according to the evaluation results.

[0088] In some optional embodiments, the above-mentioned step S6031 comprises:

[0089] Step a1, obtaining the first liquid level sloshing frequency and the first self-oscillation frequency of the buffer storage tank to be evaluated under the passive evaporation state.

[0090] Step a2, evaluating the sloshing risk of the buffer storage tank to be evaluated under the passive evaporation state based on the cold insulation layer category and the first sloshing effect identification index, and using the first liquid level sloshing frequency and the first self-oscillation frequency, to obtain a sloshing risk evaluation result.

[0091] Step a3, determining the first relief control measure based on the sloshing risk evaluation result.

[0092] Specifically, the first liquid level sloshing frequency f LLi and the first self-oscillation frequency f n of the buffer storage tank to be evaluated under the passive evaporation state are obtained.

[0093] Furthermore, the sloshing frequency f of the first liquid level can be used as a reference. LLi and the first natural frequency f n The sloshing risk of the buffer storage tank under passive evaporation is assessed, and the first mitigation control measure is determined. Then, the sloshing effect of the buffer storage tank under passive evaporation is controlled and mitigated through the first mitigation control measure. The specific process is as follows:

[0094] 1. If the potential working fluid is R508A and the buffer storage tank has a high-vacuum multi-layer insulation layer, the specific process is as follows:

[0095] (1) If 0.86f is satisfied n ≤f LLi ≤1.14f n If the risk of self-vibration is deemed high for the buffer storage tank to be evaluated, then the external disturbance balancer 1 is activated. Furthermore, the external disturbance balancer 1 can control the first liquid level sloshing frequency to the lower limit of the critical self-vibration risk frequency of 0.86f in a progressive control mode. n P RDT .

[0096] Among them, the asymptotic control mode represents the viscous damping ψ of the external disturbance balancer 1. D With loss factor damping ψ L The ratio is relatively large. Specifically, this ratio is related to the inner tank height h of the buffer storage tank. in The height h of the support frame at the top of the inner tank ipr Inner diameter r of the long axis of the inner tank head inma Inner diameter r of the short shaft of the inner tank head inmi The maximum thickness t of the outer edge of the cold insulation layer of the buffer storage tank mi The relevant relationship is shown in the following equation (1):

[0097]

[0098] In the formula:

[0099] Furthermore, such as Figure 7 As shown, P RDT Judgment factor Γ for the diffusion tendency of R508A evaporated gas in the buffer storage tank R508A related.

[0100] Furthermore, Γ R508A The definition is described as follows:

[0101] The interval Δt is determined by the diffusion trend of the evaporated gas from R508A. R0 =10s, taking 4 samples within the R508A evaporation gas diffusion trend judgment period, for a certain time t R0 , from tR0 to t R0 + 3Δt R0 Within a period, for Figure 5 the BG of the temperature and evaporation gas monitoring device 7 on the liquid introduction and liquid outlet side in the middle h1 , the evaporation gas concentration at t R0 , t R0 + Δt R0 , t R0 + 2Δt R0 , t R0 + 3Δt R0 is recorded respectively, and is recorded as C R0 , C △tR0 , C 2△tR0 , C 3△tR0 , respectively. The R508A evaporation gas diffusion trend judgment factor Γ R508AH1 can be obtained, as shown in the following relationship (2):

[0102]

[0103] Further, for Figure 5 the BG of the temperature and evaporation gas monitoring device 7 on the liquid introduction and liquid outlet side in the middle h2 , BG h3 , the R508A evaporation gas diffusion trend judgment factor Γ R508Ah2 , Γ R508Ah3 can be obtained.

[0104] Further, Γ R508A can be calculated, as shown in the following relationship (3):

[0105]

[0106] (2) If the first liquid level sloshing frequency is controlled to the lower limit of the critical self-vibration risk frequency 0.86f CL1 in the gradual control mode for a duration of t n , and P RDT , and the process still satisfies 0.86f n ≤ f LLi ≤ 1.14f n , then emergency start and stop, close the liquid introduction port and the liquid outlet port.

[0107] Wherein, t CL1 is the current TC Figure 5 , TC h1 , TC h2 , TC h3 , TC h4 , TC h5 , TC h6The temperatures measured by thermocouple No. (referred to as T) R508AH1 T R508AH2 T R508AH3 T R508AH4 T R508AH5 T R508AH6 Related:

[0108] If |T R508AH1 -T R508AH2 |≤5%,|T R508AH2 -T R508AH3 |≤5%,|T R508AH3 -T R508AH4 ≤5%, T R508AH4 -T R508AH5 ≤5%, T R508AH5 -T R508AH6 ≤5%, then t CL1 =120s; furthermore, if this condition is not met, then t CL1 =300s.

[0109] (3) If the duration reaches t CL1 The internal system uses a gradual control mode to control the first liquid level sloshing frequency to the lower limit of the critical self-resonance risk frequency of 0.86f. n P RDT After the process, f is satisfied LLi <0.86f n Or f LLi >1.14f n Then the sway damping of the buffer storage tank will be reset and terminated.

[0110] 2. If the potential working fluid is R508A and the insulation layer of the buffer storage tank is perlite, the specific process is as follows:

[0111] (1) If 0.89f is satisfied n ≤f LLi ≤1.11f n If the risk of self-vibration is deemed high for the buffer storage tank to be evaluated, then the external disturbance balancer 1 is activated. Furthermore, the external disturbance balancer 1 can control the first liquid level sloshing frequency to the lower limit of the critical self-vibration risk frequency of 0.89f using a progressive control mode. n P RDT .

[0112] (2) If the duration reaches t CL1 The internal system uses a gradual control mode to control the first liquid level sloshing frequency to the lower limit of the critical self-resonance risk frequency of 0.89f. n P RDT After the process, it still satisfies 0.89f. n ≤f LLi ≤1.11f nIf necessary, the system will automatically start / stop and close the inlet and outlet.

[0113] (3) If the duration reaches t CL1 The internal system uses a gradual control mode to control the first liquid level sloshing frequency to the lower limit of the critical self-resonance risk frequency of 0.89f. n P RDT After the process, f is satisfied LLi <0.89f n Or f LLi >1.11f n Then the sway damping of the buffer storage tank will be reset and terminated.

[0114] 3. If the potential working fluid is liquid nitrogen and the buffer storage tank has a high-vacuum multi-layer insulation layer, the specific process is as follows:

[0115] (1) If 0.81f is satisfied n ≤f LLi ≤1.19f n If the risk of self-vibration is deemed high for the buffer storage tank to be evaluated, then the external disturbance balancer 1 is activated. Furthermore, the external disturbance balancer 1 can control the first liquid level sloshing frequency to the lower limit of the critical self-vibration risk frequency of 0.81f in a progressive control mode. n P NDT .

[0116] Among them, such as Figure 8 As shown, P NDT Judgment factor Γ for the diffusion tendency of liquid nitrogen vapor in the buffer storage tank N2 related.

[0117] Furthermore, T N2 The definition is described as follows:

[0118] Determine the interval Δt by the diffusion trend of liquid nitrogen vapor. N0 =10s, the number of samples taken within the period for judging the diffusion trend of liquid nitrogen evaporation gas is equal to 6, for a certain time t N0 , from t N0 To t N0 +5△t N0 During the period, for Figure 5 BG of the liquid outlet temperature and evaporation gas monitoring device 7 h1 Record t respectively N0 t N0 +△t N0 t N0 +2△t N0 t N0 +3△t N0 t N0 +4△t N0 t N0 +5△tN0 The concentration of the evaporated gas at time t is denoted as C. N0 C △tN0 C 2△tN0 C 3△tN0 C 4△tN0 C 5△tN0 The corresponding factor Γ, which determines the diffusion tendency of liquid nitrogen evaporation gas, can be obtained. N2h1 The following relation (4) is shown:

[0119]

[0120] Furthermore, for Figure 5 BG of the liquid outlet temperature and evaporation gas monitoring device 7 h2 BG h3 This corresponds to the liquid nitrogen evaporation gas diffusion tendency judgment factor Γ. N2h2 ,Γ N2h3 .

[0121] Furthermore, Γ can be calculated. N2 The following relation (5) is shown:

[0122]

[0123] (2) If the duration reaches t CL2 The internal system uses a gradual control mode to control the first liquid level sloshing frequency to the lower limit of the critical self-resonance risk frequency of 0.81f. n P NDT After the process, it still satisfies 0.81f. n ≤f LLi ≤1.19f n If necessary, the system will automatically start / stop and close the inlet and outlet.

[0124] Among them, t CL2 Liquid nitrogen is currently stored in a buffer tank, such as Figure 5 The TC of the liquid outlet temperature and evaporation gas monitoring device 7 shown is... h1 TC h2 TC h3 TC h4 TC h5 TC h6 The temperatures measured by thermocouple No. (denoted as Γ) N2H1 ,Γ N2H2 T N2H3 T N2H4 T N2H5 T N2H6 Related:

[0125] If |T N2H1 -T N2H2 |≤2%、|TN2H2 -T N2H3 |≤2%、|T N2H3 -T N2H4 |≤2%、|T N2H4 -T N2H5 |≤2%、|T N2H5 -T N2H6 |≤2%, then t CL2 =200s; furthermore, if this condition is not met, then t CL2 =600s.

[0126] (3) If the duration reaches t CL2 The internal system uses a gradual control mode to control the first liquid level sloshing frequency to the lower limit of the critical self-resonance risk frequency of 0.81f. n P NDT After the process, f is satisfied LLi <0.81f n Or f LLi >1.19f n Then the sway damping of the buffer storage tank will be reset and terminated.

[0127] 4. If the potential working medium is liquid nitrogen and the insulation layer of the buffer storage tank is perlite, the specific process is as follows:

[0128] (1) If 0.84f is satisfied n ≤f LLi ≤1.16f n If the risk of self-vibration is deemed high for the buffer storage tank to be evaluated, then the external disturbance balancer 1 is activated. Furthermore, the external disturbance balancer 1 can control the first liquid level sloshing frequency to the lower limit of the critical self-vibration risk frequency of 0.84f in a progressive control mode. n P NDT .

[0129] (2) If the duration reaches t CL2 The internal system uses a gradual control mode to control the first liquid level sloshing frequency to the lower limit of the critical self-resonance risk frequency of 0.84f. n P NDT After the process, it still satisfies 0.84f. n ≤f LLi ≤1.16f n If necessary, the system will automatically start / stop and close the inlet and outlet.

[0130] (3) If the duration reaches t CL2 The internal system uses a gradual control mode to control the first liquid level sloshing frequency to the lower limit of the critical self-resonance risk frequency of 0.84f. n P NDT After the process, f is satisfied LLi <0.84f n Or fLLi >1.16f n Then the sway damping of the buffer storage tank will be reset and terminated.

[0131] 5. If the potential working fluid is liquid hydrogen, the buffer storage tank's insulation layer is a high-vacuum multi-layer insulation, and the specific process is as follows:

[0132] (1) If 0.70f is satisfied n ≤f LLi ≤1.30f n If the risk of self-vibration is deemed high for the buffer storage tank to be evaluated, then the external disturbance balancer 1 is activated. Furthermore, the external disturbance balancer 1 can control the first liquid level sloshing frequency to the lower limit of the critical self-vibration risk frequency of 0.70f in a progressive control mode. n P LDT .

[0133] Among them, such as Figure 9 As shown, P LDT Judgment factor Γ for the diffusion tendency of liquid hydrogen vapor in the buffer storage tank H2 related.

[0134] Furthermore, Γ H2 The definition is described as follows:

[0135] Determining the diffusion trend of liquid hydrogen vapor by measuring the interval Δt H0 =2s, the number of samples taken within the period for judging the diffusion trend of liquid hydrogen evaporation gas is 13, for a certain time t H0 , from t H0 To t H0 +12△t H0 During the period, for Figure 5 BG of the liquid outlet temperature and evaporation gas monitoring device 7 h1 Record t respectively H0 t H0 +△t H0 t H0 +2△t H0 t H0 +3△t H0 t H0 +4△t H0 t H0 +5△t H0 t H0 +6△t H0 t H0 +7△t H0 t H0 +8△t H0 t H0 +9△t H0 t H0 +10△t H0t H0 +11△t H0 t H0 +12△t H0 The concentration of the evaporated gas at time t is denoted as C. H0 C △tH0 C 2△tH0 C 3△tH0 C 4△tH0 C 5△tH0 C 6△tH0 C 7△tH0 C 8△tH0 C 9△tH0 C 10△tH0 C 11△tH0 C 12△tH0 The corresponding factor Γ, which determines the diffusion tendency of liquid nitrogen evaporation gas, can be obtained. H2h1 The following relation (6) is shown:

[0136]

[0137] Furthermore, for Figure 5 BG of the liquid outlet temperature and evaporation gas monitoring device 7 h2 BG h3 This corresponds to the Γ factor for determining the diffusion tendency of liquid hydrogen evaporation gas. H2h2 ,Γ H2h3 .

[0138] Furthermore, Γ can be calculated. H2 The following relation (7) is shown:

[0139]

[0140] (2) If the duration reaches t CL3 The internal system uses a gradual control mode to control the first liquid level sloshing frequency to the lower limit of the critical self-resonance risk frequency of 0.70f. n P LDT After the process, it still satisfies 0.70f. n ≤f LLi ≤1.30f n If necessary, the system will automatically start / stop and close the inlet and outlet.

[0141] Among them, t CL3 Liquid hydrogen is currently stored in buffer tanks, such as Figure 5 The TC of the liquid outlet temperature and evaporation gas monitoring device 7 shown is... h1 TC h2 TC h3 TC h4 TC h5 TC h6 TC h7 TCh8 , TC h9 , TC h10 , TC H2H1 , T H2H2 , T H2H3 , T H2H4 , T H2H5 , T H2H6 , T H2H7 , T H2H8 , T H2H9 , T H2H10 ) are related as follows:

[0142] If |T H2H1 -T H2H2 |≤0.4%, |T H2H2 -T H2H3 |≤0.4%, |T H2H3 -T H2H4 |≤0.4%, |T H2H4 -T H2H5 |≤0.4%, |T H2H5 -T H2H6 |≤0.4%, |T H2H6 -T H2H7 |≤0.4%, |T H2H7 -T H2H8 |≤0.4%, |T H2H8 -T H2H9 |≤0.4%, |T H2H9 -T H2H10 |≤0.4%, and T H2H1 , T H2H2 , T H2H3 , T H2H4 , T H2H5 , T H2H6 , T H2H7 , T H2H8 , T H2H9 , T H2H10 are all ≤ 94.8% T BH2 , then t CL3 = 360 s; if at least one of the two conditions is not satisfied, then t CL3 = 1200 s.

[0143] (3) If the first liquid level sloshing frequency is controlled to the lower limit of the critical self-oscillation risk frequency 0.70f CL3 in the gradual control mode for a duration of t n , and the P LDT after the process is f LLi <0.70f n or f LLi >1.30f nThen the sway damping of the buffer storage tank will be reset and terminated.

[0144] (4) If f is satisfied LLi >102.5f n If the risk of flash evaporation in the buffer storage tank under evaluation is deemed high, then the external disturbance balancer 1 is activated. Furthermore, the external disturbance balancer 1 can control the first liquid level sloshing frequency to the lower limit of the critical self-resonance risk frequency of 0.70f in a strong control mode. n P LDT .

[0145] Among them, the strong control mode represents the viscous damping ψ of the external disturbance balancer 1. D With loss factor damping ψ L The ratio is relatively small. Specifically, this ratio is related to the inner tank height h of the buffer storage tank. in The height h of the support frame at the top of the inner tank ipr Inner diameter r of the long axis of the inner tank head inma Inner diameter r of the short shaft of the inner tank head inmi The maximum thickness t of the outer edge of the cold insulation layer of the buffer storage tank mi The relevant relationship is shown in the following equation (8):

[0146]

[0147] In the formula:

[0148] (5) If the duration reaches t CL4 The internal system uses a powerful control mode to control the first liquid level sloshing frequency to the lower limit of the critical self-resonance risk frequency of 0.70f. n P LDT After the process, f still satisfies LLi >102.5f n Or 0.70f n ≤f LLi ≤1.30f n If necessary, the system will automatically start / stop and close the inlet and outlet.

[0149] Among them, t CL4 Liquid hydrogen is currently stored in buffer tanks, such as Figure 5 The TC of the liquid outlet temperature and evaporation gas monitoring device 7 shown is... h1 TC h2 TC h3 TC h4 TC h5 TC h6 TC h7 TC h8 TC h9 TC h10temperature measured by the thermocouple (denoted as T H2H1 H2H2 H2H3 H2H4 H2H5 H2H6 H2H7 H2H8 H2H9 H2H10

[0150] ① For and if |T H2H1 -T H2H2 |≤0.4%, |T H2H2 -T H2H3 |≤0.4%, |T H2H3 -T H2H4 |≤0.4%, |T H2H4 -T H2h5 |≤0.4%, |T H2H5 -T H2H6 |≤0.4%, |T H2H6 -T H2H7 |≤0.4%, |T H2H7 -T H2H8 |≤0.4%, |T H2H8 -T H2H9 |≤0.4%, |T H2H9 -T H2H10 ≤0.4%, and T H2H1 , T H2H2 , T H2H3 , T H2H4 , T H2H5 , T H2H6 , T H2H7 , T H2H8 , T H2H9 , T H2H10 are all ≤94.8% T BH2 , then t CL4 =360s; if the condition is not met, t CL4 =1200s.

[0151] ② For and if |T H2H1 -T H2H2 |≤0.4%, |T H2H2 -T H2H3 |≤0.4%, |T H2H3 -T H2H4 |≤0.4%, |T H2H4 -T H2H5 |≤0.4%, |T​​​​​​​​​​H2H5 -T H2H6 |T H2H6 -T H2H7 |T H2H7 -T H2H8 |T H2H8 -T H2H9 |T H2H9 -T H2H10 |T H2H1 |T H2H2 |T H2H3 |T H2H4 |T H2H5 |T H2H6 |T H2H7 |T H2H8 |T H2H9 |T H2H10 |T BH2 t CL4 = 480 s; if the condition is not met, t CL4 = 1200 s.

[0152] ③ For and if |T H2H1 -T H2H2 |≤ 0.25%, |T H2H2 -T H2H3 |≤ 0.25%, |T H2H3 -T H2H4 |≤ 0.25%, |T H2H4 -T H2H5 |≤ 0.25%, |T H2H5 -T H2H6 |≤ 0.25%, |T H2H6 -T H2H7 |≤ 0.25%, |T H2H7 -T H2H8 |≤ 0.25%, |T H2H8 -T H2H9 |≤ 0.25%, |T H2H9 -T H2H10 |≤ 0.25%, and |T H2H1 |≤ 0.25%, |T H2H2 |≤ 0.25%, |T H2H3 |≤ 0.25%, |T H2H4 |≤ 0.25%, |T H2H5 |≤ 0.25%, |T H2H6 |≤ 0.25%, |T H2H7 |≤ 0.25%, |T H2H8 |≤ 0.25%, |T H2H9 |≤ 0.25%, |T H2H10 |≤ 0.25%, |T BH2 t CL4= 600 s; if this condition is not satisfied, t CL4 = 2500 s.

[0153] (4) For and if |T H2H1 - T H2H2 | < 0.15%, |T H2H2 - T H2H3 | < 0.15%, |T H2H3 - T H2H4 | < 0.15%, |T H2H4 - T H2H5 | < 0.15%, |T H2H5 - T H2H6 | < 0.15%, |T H2H6 - T H2H7 | < 0.15%, |T H2H7 - T H2H8 | < 0.15%, |T H2H8 - T H2H9 | < 0.15%, |T H2H9 - T H2H10 | < 0.15%, and T H2H1 , T H2H2 , T H2H3 , T H2H4 , T H2H5 , T H2H6 , T H2H7 , T H2H8 , T H2H9 , T H2H10 are all < 96.9% T BH2 , then t CL4 = 720 s; if this condition is not satisfied, t CL4 = 3000 s.

[0154] (6) If, after a process of controlling the first liquid level sloshing frequency to P CL4 0.70f n in the strong control mode for a duration of t LDT , it is satisfied that f LLi < 0.70f n > 1.30f CL4 , then reset the sloshing damping of the buffer storage tank.

[0155] (7) If, after a process of controlling the first liquid level sloshing frequency to P n 0.70f LDT in the strong control mode for a duration of t n , it is satisfied that 102.5f LLi > 1.30f nThen, the strong control mode of the buffer storage tank sway damping will be switched to the gradual control mode of the buffer storage tank sway damping:

[0156] ① If the sway damping of the buffer storage tank is switched from the strong control mode to the gradual control mode, and then for another period of time t... CL3 The internal control mechanism aims to reduce the sloshing frequency of the buffer storage tank to the lower limit of the critical natural vibration risk frequency of 0.70f. n P LDT After the process, it satisfies 0.70f. n ≤f LLi ≤1.30f n If necessary, the system will automatically start / stop and close the inlet and outlet.

[0157] ② If the sway damping of the buffer storage tank is switched from the strong control mode to the gradual control mode, and then for another period of time t... CL3 The internal control mechanism aims to reduce the sloshing frequency of the buffer storage tank to the lower limit of the critical natural vibration risk frequency of 0.70f. n P LDT After the process, f is satisfied LLi <0.70f n Then the sway damping of the buffer storage tank will be reset and terminated.

[0158] 6. If the potential working fluid is liquid hydrogen, and the buffer storage tank's insulation layer is perlite, the specific process is as follows:

[0159] (1) If 0.72f is satisfied n ≤f LLi ≤1.28f n If the risk of self-vibration is deemed high for the buffer storage tank to be evaluated, then the external disturbance balancer 1 is activated. Furthermore, the external disturbance balancer 1 can control the first liquid level sloshing frequency to the lower limit of the critical self-vibration risk frequency of 0.72f in a progressive control mode. n P LDT .

[0160] (2) If the duration reaches t CL3 The internal system uses a gradual control mode to control the first liquid level sloshing frequency to the lower limit of the critical self-resonance risk frequency of 0.72f. n P LDT After the process, it still satisfies 0.72f. n ≤f LLi ≤1.28f n If necessary, the system will automatically start / stop and close the inlet and outlet.

[0161] (3) If the duration reaches t CL3The internal system uses a gradual control mode to control the first liquid level sloshing frequency to the lower limit of the critical self-resonance risk frequency of 0.72f. n P LDT After the process, f is satisfied LLi <0.72f n Or f LLi >1.28f n Then the sway damping of the buffer storage tank will be reset and terminated.

[0162] (4) If f is satisfied LLi >93.5f n If the risk of flash evaporation is deemed high in the buffer storage tank to be evaluated, then the external disturbance balancer 1 is activated. Furthermore, the external disturbance balancer 1 can control the first liquid level sloshing frequency to the lower limit of the critical self-resonance risk frequency of 0.72f in a strong control mode. n P LDT .

[0163] (5) If the duration reaches t CL4 The internal system uses a powerful control mode to keep the first liquid level sloshing frequency controlled to the lower limit of the critical self-resonance risk frequency of 0.72f. n P LDT After the process, f still satisfies LLi >93.5f n Or 0.72f n ≤f LLi ≤1.28f n If necessary, the system will automatically start / stop and close the inlet and outlet.

[0164] (6) If the duration reaches t CL4 The internal system uses a powerful control mode to keep the first liquid level sloshing frequency controlled to the lower limit of the critical self-resonance risk frequency of 0.72f. n P LDT After the process, f is satisfied LLi <0.72f n Then the sway damping of the buffer storage tank will be reset and terminated.

[0165] (7) If the duration reaches t CL4 The internal system uses a powerful control mode to keep the first liquid level sloshing frequency controlled to the lower limit of the critical self-resonance risk frequency of 0.72f. n P LDT After the process, it satisfies 93.5f. n >f LLi >1.28f n Then, the strong control mode of the buffer storage tank sway damping will be switched to the gradual control mode of the buffer storage tank sway damping:

[0166] ① If the sway damping of the buffer storage tank is switched from the strong control mode to the gradual control mode, and then for another period of time t... CL3 The internal buffer storage tank's liquid level sloshing frequency is controlled to the lower limit of the critical natural vibration risk frequency, 0.72f. n P LDT After the process, it satisfies 0.72f. n ≤f LLi ≤1.28f n If necessary, the system will automatically start / stop and close the inlet and outlet.

[0167] ② If the sway damping of the buffer storage tank is switched from the strong control mode to the gradual control mode, and then for another period of time t... CL3 The internal buffer storage tank's liquid level sloshing frequency is controlled to the lower limit of the critical natural vibration risk frequency, 0.72f. n P LDT After the process, f is satisfied LLi <0.72f n Then the sway damping of the buffer storage tank will be reset and terminated.

[0168] Step S6032: Using the first mitigation control measure, control and mitigate the sloshing effect of the buffer storage tank to be evaluated under passive evaporation state.

[0169] Specifically, based on the different first mitigation control measures determined in step S6031 above, the sloshing effect of the buffer storage tank to be evaluated under passive evaporation state can be controlled and mitigated.

[0170] Step S604: Based on the insulation layer type and the second sloshing effect identification index, control and mitigate the sloshing effect of the buffer storage tank to be evaluated under disturbed evaporation conditions. For details, please refer to... Figure 1 Step S104 of the illustrated embodiment will not be described again here.

[0171] The sloshing effect mitigation control method for the low-temperature working medium buffer storage tank provided by the embodiment can be used for electronic devices such as computers, mobile phones, tablet computers and the like.

[0172] In the embodiment, a sloshing effect mitigation control method for a low-temperature working medium buffer storage tank is provided, which can be used for electronic devices such as computers, mobile phones, tablet computers and the like. Figure 10 The flowchart of the sloshing effect mitigation control method for the low-temperature working medium buffer storage tank according to the embodiment of the present application is shown in FIG. 1, which includes the following steps: Figure 10

[0173] In step S1001, the potential working medium category to which the buffer storage tank to be evaluated faces and the cold insulation layer category of the buffer storage tank to be evaluated are obtained. For details, refer to step S101 of the embodiment shown in FIG. 1, which will not be repeated here. Figure 1

[0174] In step S1002, based on the potential working medium category, the first sloshing effect identification index of the buffer storage tank to be evaluated in the passive evaporation state and the second sloshing effect identification index of the buffer storage tank to be evaluated in the perturbed evaporation state are determined respectively. For details, refer to step S602 of the embodiment shown in FIG. 1, which will not be repeated here. Figure 6

[0175] ​​​Step S1003, based on the cold insulation layer category and the first sloshing effect identification index, control the sloshing effect of the buffer storage tank to be evaluated in the passive evaporation state. For details, please refer to Figure 6 Step S603 of the embodiment shown will not be described here.

[0176] Step S1004, based on the cold insulation layer category and the second sloshing effect identification index, control the sloshing effect of the buffer storage tank to be evaluated in the disturbed evaporation state.

[0177] Specifically, the above step S1004 includes:

[0178] Step S10041, obtain the second liquid level sloshing frequency, the second natural frequency, the external disturbance sloshing frequency and the external disturbance sloshing offset angle of the buffer storage tank to be evaluated in the disturbed evaporation state.

[0179] Specifically, continue to obtain the second liquid level sloshing frequency f LLi , the second natural frequency f n , the external disturbance sloshing frequency f EDi and the external disturbance sloshing offset angle

[0180] Step S10042, based on the cold insulation layer category and the second sloshing effect identification index, use the second liquid level sloshing frequency, the external disturbance sloshing frequency, the second natural frequency and the external disturbance sloshing offset angle to evaluate the sloshing risk of the buffer storage tank to be evaluated in the disturbed evaporation state and determine the second mitigation control measure.

[0181] Specifically, the monitored liquid level sloshing frequency f LLi , the external disturbance sloshing frequency f EDi and the external disturbance sloshing offset angle are combined and compared with the second natural frequency f n of the buffer storage tank to define the natural frequency risk; then, the monitored liquid level sloshing frequency f LLi is compared with the external disturbance sloshing frequency f EDi to define the forced frequency risk.

[0182] Further, according to the different sloshing risk evaluation results, corresponding second mitigation control measures can be further formulated. The specific process is as follows:

[0183] 1. If the potential working medium is R508A and the cold insulation layer of the buffer storage tank is high vacuum multilayer insulation, the specific process is as follows:

[0184] (1) If If the risk of self-vibration of the buffer storage tank to be evaluated is determined to be high, then the external disturbance balancer 1 is activated. Furthermore, the external disturbance balancer 1 can use a progressive control mode to adjust the excitation frequency of the combination of liquid level sloshing in the buffer storage tank to be evaluated and external disturbance. Controlled to the lower limit of the critical natural vibration risk frequency of 0.86f. n P RDT .

[0185] (2) If the duration reaches t CL1 The internal progressive control mode is used to determine the excitation frequency of the buffer storage tank under evaluation under the combined effect of liquid level sloshing and external disturbances. Controlled to the lower limit of the critical natural vibration risk frequency of 0.86f. n P RDT After the process, it still satisfies In case of emergency, start / stop the system and close the inlet and outlet of the fluid.

[0186] (3) If the duration reaches t CL1 The internal progressive control mode is used to determine the excitation frequency of the buffer storage tank under evaluation under the combined effect of liquid level sloshing and external disturbances. Controlled to the lower limit of the critical natural vibration risk frequency of 0.86f. n P RDT After the process, satisfy or Then the sway damping of the buffer storage tank will be reset and terminated.

[0187] (4) If satisfied If the risk of forced vibration of the buffer storage tank is deemed high, then the external disturbance balancer 1 is activated. Furthermore, the external disturbance balancer 1 can be activated in a strong control mode to control the swaying frequency of external disturbances to be evaluated in the buffer storage tank. Controlled to the lower limit of the critical forced vibration risk frequency of 185f LLi P RFVT .

[0188] Among them, such as Figure 11 As shown, P RFVT Judgment factor Γ for the diffusion tendency of R508A evaporated gas in the buffer storage tank R508A related.

[0189] (5) If the duration reaches t CL5 The internal powerful control mode controls the frequency of external disturbances and swaying of the buffer storage tank to be evaluated. Controlled to the lower limit of the critical forced vibration risk frequency of 185f LLi P RFVT After the process, it still satisfies Or satisfy In case of emergency, start / stop the system and close the inlet and outlet of the fluid.

[0190] Among them, t CL5 R508A is currently in the buffer storage tank as follows Figure 5 The TC of the liquid outlet temperature and evaporation gas monitoring device 7 shown is... h1 TC h2 TC h3 TC h4 TC h5 TC h6 The temperatures measured by thermocouple No. (referred to as T) R508Ah1 T R508AH2 T R508AH3 T R508AH4 T R508AH5 T R508AH6 Related:

[0191] ①For If |T R508AH1 -T R508AH2 |≤3.6%、|T R508AH2 -T R508AH3 |≤3.6%、|T R508AH3 -T R508AH4 |≤3.6%、|T R508AH4 -T R508AH5 |≤3.6%、|T R508AH5 -T R508AH6 |≤3.6%, then t CL5 =120s; furthermore, if this condition is not met, then t CL5 =300s.

[0192] ②For If |T R508AH1 -T R508AH2 |≤2.5%、|T R508AH2 -T R508AH3 |≤2.5%、|T R508AH3 -T R508AH4 |≤2.5%、|T R508AH4 -T R508AH5 |≤2.5%、|T R508AH5 -T R508AH6 |≤2.5%, then t CL5 =180s; furthermore, if this condition is not met, then t CL5 =450s.

[0193] (6) If the duration reaches t CL5 The internal powerful control mode controls the frequency of external disturbances and swaying of the buffer storage tank to be evaluated. Controlled to the lower limit of the critical forced vibration risk frequency of 185f LLi P RFVT After the process, satisfy and Then the sway damping of the buffer storage tank will be reset and terminated.

[0194] (7) If the duration reaches t CL5 The internal powerful control mode controls the frequency of external disturbances and swaying of the buffer storage tank to be evaluated. Controlled to the lower limit of the critical forced vibration risk frequency of 185f LLi P RFVT After the process, satisfy Then switch from the strong control mode of the buffer tank sway damping to the gradual control mode of the buffer tank sway damping:

[0195] ① If the sway damping of the buffer storage tank is switched from the strong control mode to the gradual control mode, and then for another period of time t... CL1 The excitation frequency under the combination of internal liquid level sloshing and external disturbance Controlled to the lower limit of the critical natural vibration risk frequency of 0.86f. n P RDT After the process, satisfy In case of emergency, start / stop the system and close the inlet and outlet of the fluid.

[0196] ② If the sway damping of the buffer storage tank is switched from the strong control mode to the gradual control mode, and then for another period of time t... CL1 The excitation frequency under the combination of internal liquid level sloshing and external disturbance Controlled to the lower limit of the critical natural vibration risk frequency of 0.86f. n P RDT After the process, satisfy Then the sway damping of the buffer storage tank will be reset and terminated.

[0197] 2. If the potential working fluid is R508A and the insulation layer of the buffer storage tank is perlite, the specific process is as follows:

[0198] (1) If satisfied If the risk of self-vibration of the buffer storage tank to be evaluated is determined to be high, then the external disturbance balancer 1 is activated. Furthermore, the external disturbance balancer 1 can use a progressive control mode to adjust the excitation frequency of the combination of liquid level sloshing in the buffer storage tank to be evaluated and external disturbance. Controlled to the lower limit of the critical natural vibration risk frequency of 0.89f. n P RDT .

[0199] (2) If the duration reaches t CL1 The internal progressive control mode is used to determine the excitation frequency of the buffer storage tank under evaluation under the combined effect of liquid level sloshing and external disturbances. Controlled to the lower limit of the critical natural vibration risk frequency of 0.89f. n P RDT After the process, it still satisfies In case of emergency, start / stop the system and close the inlet and outlet of the fluid.

[0200] (3) If the duration reaches t CL1 The internal progressive control mode is used to determine the excitation frequency of the buffer storage tank under evaluation under the combined effect of liquid level sloshing and external disturbances. Controlled to the lower limit of the critical natural vibration risk frequency of 0.89f. n P RDT After the process, satisfy or Then the sway damping of the buffer storage tank will be reset and terminated.

[0201] (4) If satisfied If the risk of forced vibration of the buffer storage tank to be evaluated is deemed high, then the external disturbance balancer 1 is activated. Furthermore, the external disturbance balancer 1 can be activated in a strong control mode to reduce the frequency of external disturbance swaying of the buffer storage tank to be evaluated. Controlled to the lower limit of the critical forced vibration risk frequency of 191f LLi P RFVT .

[0202] (5) If the duration reaches t CL5 The internal powerful control mode controls the frequency of external disturbances and swaying of the buffer storage tank to be evaluated. Controlled to the lower limit of the critical forced vibration risk frequency of 191f LLi P RFVT After the process, it still satisfies Or satisfy In case of emergency, start / stop the system and close the inlet and outlet of the fluid.

[0203] (6) If the duration reaches t CL5 The internal powerful control mode controls the frequency of external disturbances and swaying of the buffer storage tank to be evaluated. Controlled to the lower limit of the critical forced vibration risk frequency of 191f LLi P RFVT After the process, satisfy and Then the sway damping of the buffer storage tank will be reset and terminated.

[0204] (7) If the duration reaches t CL5 The internal powerful control mode controls the frequency of external disturbances and swaying of the buffer storage tank to be evaluated. Controlled to the lower limit of the critical forced vibration risk frequency of 191f LLi P RFVT After the process, satisfy and Then switch from the strong control mode of the buffer tank sway damping to the gradual control mode of the buffer tank sway damping:

[0205] ① If the sway damping of the buffer storage tank is switched from the strong control mode to the gradual control mode, and then for another period of time t... CL1 Excitation frequency under the combination of internal liquid level sloshing and external disturbance Controlled to the lower limit of the critical natural vibration risk frequency of 0.89f. n P RDT After the process, satisfy In case of emergency, start / stop the system and close the inlet and outlet of the fluid.

[0206] ② If the sway damping of the buffer storage tank is switched from the strong control mode to the gradual control mode, and then for another period of time t... CL1 Excitation frequency under the combination of internal liquid level sloshing and external disturbance Controlled to the lower limit of the critical natural vibration risk frequency of 0.89f. n P RDT After the process, satisfy Then the sway damping of the buffer storage tank will be reset and terminated.

[0207] 3. If the potential working fluid is liquid nitrogen and the buffer storage tank has a high-vacuum multi-layer insulation layer, the specific process is as follows:

[0208] (1) If satisfied If the risk of self-vibration of the buffer storage tank to be evaluated is determined to be high, then the external disturbance balancer 1 is activated. Furthermore, the external disturbance balancer 1 can use a progressive control mode to adjust the excitation frequency of the combination of liquid level sloshing in the buffer storage tank to be evaluated and external disturbance. Controlled to the lower limit of the critical natural vibration risk frequency of 0.81f. n P NDT .

[0209] (2) If the duration reaches t CL2 The internal progressive control mode is used to determine the excitation frequency of the buffer storage tank under evaluation under the combined effect of liquid level sloshing and external disturbances. Controlled to the lower limit of the critical natural vibration risk frequency of 0.81f. n P NDT After the process, it still satisfies In case of emergency, start / stop the system and close the inlet and outlet of the fluid.

[0210] (3) If the duration reaches t CL2 The internal progressive control mode is used to determine the excitation frequency of the buffer storage tank under evaluation under the combined effect of liquid level sloshing and external disturbances. Controlled to the lower limit of the critical natural vibration risk frequency of 0.81f. n P NDT After the process, satisfy or Then the sway damping of the buffer storage tank will be reset and terminated.

[0211] (4) If satisfied If the risk of forced vibration of the buffer storage tank to be evaluated is deemed high, then the external disturbance balancer 1 is activated. Furthermore, the external disturbance balancer 1 can be activated in a strong control mode to reduce the frequency of external disturbance swaying of the buffer storage tank to be evaluated. Controlled to the lower limit of the critical forced vibration risk frequency of 142f LLi P NFVT .

[0212] Among them, such as Figure 12 As shown, P NFVT Judgment factor Γ for the diffusion tendency of liquid nitrogen vapor in the buffer storage tank N2 related.

[0213] (5) If the duration reaches t CL6 The internal powerful control mode controls the frequency of external disturbances and swaying of the buffer storage tank to be evaluated. Controlled to the lower limit of the critical forced vibration risk frequency of 142f LLi P NFVT After the process, it still satisfies Or satisfy In case of emergency, start / stop the system and close the inlet and outlet of the fluid.

[0214] Among them, t CL6 Liquid nitrogen is currently stored in a buffer tank, such as Figure 5 The TC of the liquid outlet temperature and evaporation gas monitoring device 7 shown is... h1 TC h2 TC h3 TC h4 TC h5 TC h6 The temperatures measured by thermocouple No. (referred to as T) N2H1 T N2H2 T N2H3 T N2H4 T N2H5 T N2H6 Related:

[0215] ①For and If |T N2H1 -T N2H2 |≤1.8%、|T N2H2 -T N2H3 |≤1.8%、|TN2H3 -T N2H4 |T N2H4 -T N2H5 |T N2H5 -T N2H6 |T CL6 = 200 s; further, if this condition is not met, then t CL6 = 600 s.

[0216] 2) for and if |T N2H1 -T N2H2 |T N2H2 -T N2H3 |T N2H3 -T N2H4 |T N2H4 -T N2H5 |T N2H5 -T N266 |T CL6 = 250 s; further, if this condition is not met, then t CL6 = 750 s.

[0217] 3) for and if |T N2H1 -T N2H2 |T M2H2 -T N2H3 |T N2H3 -T N2H4 |T N2H4 -T N2H5 |T N2H5 -T N2H6 |T CL6 = 420 s; further, if this condition is not met, then t CL6 = 1350 s.

[0218] 4) for and if |T N2H1 -T N2H2 |T N2H2 -T N2H3 |T N2H3 -T N2H4 |T N2H4 -T N2H5 |T N2H5 -T N2H6|≤1% and satisfy T N2H1 T N2H2 T N2H3 T N2H4 T N2H5 T N2H6 ≤90.6%T BN2 , then t CL6 =450s; furthermore, if this condition is not met, then t CL6 =1400s.

[0219] ⑤ For and If |T N2H1 -T N2H2 |≤1%、|T N2H2 -T N2H3 |≤1%、|T N2H3 -T N2H4 |≤1%、|T N2H4 -T N2H5 |≤1%、|T N2H5 -T N2H6 |≤1% and meets 90.6%T BN2 <T N2H1 T N2H2 T N2H3 T N2H4 T N2H5 T N2H6 ≤92.4%T BN2 , then t CL6 =480s; furthermore, if this condition is not met, then t CL6 =1500s.

[0220] (6) If the duration reaches t CL6 The internal powerful control mode controls the frequency of external disturbances and swaying of the buffer storage tank to be evaluated. Controlled to the lower limit of the critical forced vibration risk frequency of 142f LLi P NFVT After the process, satisfy and Then switch from the strong control mode of the buffer tank sway damping to the gradual control mode of the buffer tank sway damping:

[0221] ① If the sway damping of the buffer storage tank is switched from the strong control mode to the gradual control mode, and then for another period of time t... CL2 The excitation frequency under the combination of internal liquid level sloshing and external disturbance and Controlled to the lower limit of the critical natural vibration risk frequency of 0.81f. n P NDT After the process, satisfy In case of emergency, start / stop the system and close the inlet and outlet of the fluid.

[0222] ② If the sway damping of the buffer storage tank is switched from the strong control mode to the gradual control mode, and then for another period of time t... CL2 The excitation frequency under the combination of internal liquid level sloshing and external disturbance and Controlled to the lower limit of the critical natural vibration risk frequency of 0.81f. n P NDT After the process, satisfy Then the sway damping of the buffer storage tank will be reset and terminated.

[0223] 4. If the potential working medium is liquid nitrogen and the insulation layer of the buffer storage tank is perlite, the specific process is as follows:

[0224] (1) If satisfied If the risk of self-vibration of the buffer storage tank to be evaluated is determined to be high, then the external disturbance balancer 1 is activated. Furthermore, the external disturbance balancer 1 can use a progressive control mode to adjust the excitation frequency of the combination of liquid level sloshing in the buffer storage tank to be evaluated and external disturbance. Controlled to the lower limit of the critical natural vibration risk frequency of 0.84f. n P NDT .

[0225] (2) If the duration reaches t CL2 The internal progressive control mode is used to determine the excitation frequency of the buffer storage tank under evaluation under the combined effect of liquid level sloshing and external disturbances. Controlled to the lower limit of the critical natural vibration risk frequency of 0.84f. n P NDT After the process, it still satisfies In case of emergency, start / stop the system and close the inlet and outlet of the fluid.

[0226] (3) If the duration reaches t CL2 The internal progressive control mode is used to determine the excitation frequency of the buffer storage tank under evaluation under the combined effect of liquid level sloshing and external disturbances. Controlled to the lower limit of the critical natural vibration risk frequency of 0.84f. n P NDT After the process, satisfy or Then the sway damping of the buffer storage tank will be reset and terminated.

[0227] (4) If satisfied If the risk of forced vibration of the buffer storage tank to be evaluated is deemed high, then the external disturbance balancer 1 is activated. Furthermore, the external disturbance balancer 1 can be activated in a strong control mode to reduce the frequency of external disturbance swaying of the buffer storage tank to be evaluated. Controlled to the lower limit of the critical forced vibration risk frequency of 146fLLi P NFVT .

[0228] (5) If the process of controlling the frequency of the liquid level sloshing combined with the external disturbance to the lower limit of the critical forced vibration risk frequency 146f CL6 for a duration of t in the strong control mode, still satisfies LLi P NFVT of the process, satisfies or satisfies then emergency start-stop, close the liquid inlet and outlet.

[0229] (6) If the process of controlling the frequency of the liquid level sloshing combined with the external disturbance to the lower limit of the critical forced vibration risk frequency 146f CL6 for a duration of t in the strong control mode, satisfies LLi P NFVT of the process, satisfies and then reset the damping of the sloshing of the buffer storage tank.

[0230] (7) If the process of controlling the frequency of the liquid level sloshing combined with the external disturbance to the lower limit of the critical forced vibration risk frequency 146f CL6 for a duration of t in the strong control mode, satisfies LLi P NFVT of the process, satisfies and then switch the strong control mode of the damping of the sloshing of the buffer storage tank to the gradual control mode of the damping of the sloshing of the buffer storage tank:

[0231] ① If the process of controlling the frequency of the liquid level sloshing combined with the external disturbance to the lower limit of the critical forced vibration risk frequency 146f CL2 for a duration of t in the strong control mode, after the damping of the sloshing of the buffer storage tank is switched to the gradual control mode of the damping of the sloshing of the buffer storage tank, satisfies n P NDT of the process, satisfies then emergency start-stop, close the liquid inlet and outlet.

[0232] ② If the process of controlling the frequency of the liquid level sloshing combined with the external disturbance to the lower limit of the critical forced vibration risk frequency 146f CL2 for a duration of t in the strong control mode, after the damping of the sloshing of the buffer storage tank is switched to the gradual control mode of the damping of the sloshing of the buffer storage tank, satisfies n PNDT After the process, satisfy Then the sway damping of the buffer storage tank will be reset and terminated.

[0233] 5. If the potential working fluid is liquid hydrogen, the buffer storage tank's insulation layer is a high-vacuum multi-layer insulation, and the specific process is as follows:

[0234] (1) If satisfied If the risk of self-vibration of the buffer storage tank to be evaluated is determined to be high, then the external disturbance balancer 1 is activated. Furthermore, the external disturbance balancer 1 can use a progressive control mode to adjust the excitation frequency of the combination of liquid level sloshing in the buffer storage tank to be evaluated and external disturbance. Controlled to the lower limit of the critical natural vibration risk frequency of 0.70f. n P LDT .

[0235] (2) If the duration reaches t CL3 The internal progressive control mode is used to determine the excitation frequency of the buffer storage tank under evaluation under the combined effect of liquid level sloshing and external disturbances. Controlled to the lower limit of the critical natural vibration risk frequency of 0.70f. n P LDT After the process, it still satisfies In case of emergency, start / stop the system and close the inlet and outlet of the fluid.

[0236] (3) If the duration reaches t CL3 The internal progressive control mode is used to determine the excitation frequency of the buffer storage tank under evaluation under the combined effect of liquid level sloshing and external disturbances. Controlled to the lower limit of the critical natural vibration risk frequency of 0.70f. n P LDT After the process, satisfy Or satisfy Then the sway damping of the buffer storage tank will be reset and terminated.

[0237] (4) If satisfied If the risk of flash evaporation in the buffer storage tank under evaluation is deemed high, then the external disturbance balancer 1 is activated. Furthermore, the external disturbance balancer 1 can, in a strong control mode, control the activation frequency of the combination of liquid level sloshing in the buffer storage tank under evaluation and external disturbance. Controlled to the lower limit of the critical natural vibration risk frequency of 0.70f. n P LDT .

[0238] (5) If the duration reaches t CL4 The internal high-power control mode will generate the excitation frequency of the buffer storage tank under evaluation under the combined effect of liquid level sloshing and external disturbance. Controlled to the lower limit of the critical natural vibration risk frequency of 0.70f. n PLDT After the process of the liquid level sloshing of the buffer storage tank is controlled to the critical self-oscillation risk frequency lower limit 0.70f or then emergency start-stop, close the liquid inlet and the liquid outlet.

[0239] (6) If the excitation frequency of the liquid level sloshing combined with the external disturbance of the buffer storage tank to be evaluated is controlled to the critical self-oscillation risk frequency lower limit 0.70f CL4 for a duration of t After the process of the liquid level sloshing of the buffer storage tank is controlled to the critical self-oscillation risk frequency lower limit 0.70f n of P LDT , the following condition is met then reset the buffer storage tank sloshing damping.

[0240] (7) If the excitation frequency of the liquid level sloshing combined with the external disturbance of the buffer storage tank to be evaluated is controlled to the critical self-oscillation risk frequency lower limit 0.70f CL4 for a duration of t After the process of the liquid level sloshing of the buffer storage tank is controlled to the critical self-oscillation risk frequency lower limit 0.70f n of P LDT , the following condition is met then switch the strong control mode of the buffer storage tank sloshing damping to the gradual control mode of the buffer storage tank sloshing damping:

[0241] ① If the excitation frequency of the liquid level sloshing combined with the external disturbance is controlled to the critical self-oscillation risk frequency lower limit 0.70f CL3 for a duration of t After the process of the liquid level sloshing of the buffer storage tank is controlled to the critical self-oscillation risk frequency lower limit 0.70f n of P LDT , the following condition is met then emergency start-stop, close the liquid inlet and the liquid outlet.

[0242] ② If the excitation frequency of the liquid level sloshing combined with the external disturbance is controlled to the critical self-oscillation risk frequency lower limit 0.70f CL3 for a duration of t After the process of the liquid level sloshing of the buffer storage tank is controlled to the critical self-oscillation risk frequency lower limit 0.70f n of P LDT , the following condition is met then reset the buffer storage tank sloshing damping.

[0243] (8) If the following condition is met then it is determined that the forced oscillation risk of the buffer storage tank to be evaluated is high, at this time, the external disturbance balancer 1 is excited, and further, the external disturbance balancer 1 can control the external disturbance sloshing frequency of the buffer storage tank to be evaluated in a strong control mode Controlled to the lower limit of the critical forced vibration risk frequency of 62f LLi P LVFT .

[0244] Among them, such as Figure 13 As shown, P LVFT Judgment factor Γ for the diffusion tendency of liquid hydrogen vapor in the buffer storage tank H2 related.

[0245] (9) If the duration reaches t CL4 The internal powerful control mode controls the frequency of external disturbances and swaying of the buffer storage tank to be evaluated. Controlled to the lower limit of the critical forced vibration risk frequency of 62f LLi P LVFT After the process, it still satisfies Or satisfy In case of emergency, start / stop the system and close the inlet and outlet of the fluid.

[0246] (10) If the duration reaches t CL4 The internal powerful control mode controls the frequency of external disturbances and swaying of the buffer storage tank to be evaluated. Controlled to the lower limit of the critical forced vibration risk frequency of 62f LLi P LVFT After the process, satisfy and Then the sway damping of the buffer storage tank will be reset and terminated.

[0247] (11) If the duration reaches t CL4 The internal powerful control mode controls the frequency of external disturbances and swaying of the buffer storage tank to be evaluated. Controlled to the lower limit of the critical forced vibration risk frequency of 62f LLi P LVFT After the process, satisfy and Then switch from the strong control mode of the buffer tank sway damping to the gradual control mode of the buffer tank sway damping:

[0248] ① If the sway damping of the buffer storage tank is switched from the strong control mode to the gradual control mode, and then for another period of time t... CL3 The excitation frequency under the combination of internal liquid level sloshing and external disturbance and Controlled to the lower limit of the critical natural vibration risk frequency of 0.70f. n P LDT After the process, satisfy In case of emergency, start / stop the system and close the inlet and outlet of the fluid.

[0249] ② If the sway damping of the buffer storage tank is switched from the strong control mode to the gradual control mode, and then for another period of time t... CL3 The excitation frequency under the combination of internal liquid level sloshing and external disturbance and Controlled to the lower limit of the critical natural vibration risk frequency of 0.70f. n P LDT After the process, satisfy Then the sway damping of the buffer storage tank will be reset and terminated.

[0250] 6. If the potential working fluid is liquid hydrogen, and the buffer storage tank's insulation layer is perlite, the specific process is as follows:

[0251] (1) If satisfied If the risk of self-vibration of the buffer storage tank to be evaluated is determined to be high, then the external disturbance balancer 1 is activated. Furthermore, the external disturbance balancer 1 can use a progressive control mode to adjust the excitation frequency of the combination of liquid level sloshing in the buffer storage tank to be evaluated and external disturbance. Controlled to the lower limit of the critical natural vibration risk frequency of 0.72f. n P LDT .

[0252] (2) If the duration reaches t CL3 The internal progressive control mode is used to determine the excitation frequency of the buffer storage tank under evaluation under the combined effect of liquid level sloshing and external disturbances. Controlled to the lower limit of the critical natural vibration risk frequency of 0.72f. n P LDT After the process, it still satisfies In case of emergency, start / stop the system and close the inlet and outlet of the fluid.

[0253] (3) If the duration reaches t CL3 The internal progressive control mode is used to determine the excitation frequency of the buffer storage tank under evaluation under the combined effect of liquid level sloshing and external disturbances. Controlled to the lower limit of the critical natural vibration risk frequency of 0.72f. n P LDT After the process, satisfy Or satisfy Then the sway damping of the buffer storage tank will be reset and terminated.

[0254] (4) If satisfied If the risk of flash evaporation in the buffer storage tank under evaluation is deemed high, then the external disturbance balancer 1 is activated. Furthermore, the external disturbance balancer 1 can, in a strong control mode, control the activation frequency of the combination of liquid level sloshing in the buffer storage tank under evaluation and external disturbance. Controlled to the lower limit of the critical natural vibration risk frequency of 0.72f. n P LDT .

[0255] (5) If the duration reaches t CL4 The internal high-power control mode will generate the excitation frequency of the buffer storage tank under evaluation under the combined effect of liquid level sloshing and external disturbance. Controlled to the lower limit of the critical natural vibration risk frequency of 0.72f. n P LDT After the process, it still satisfies Or satisfy In case of emergency, start / stop the system and close the inlet and outlet of the fluid.

[0256] (6) If the duration reaches t CL4 The internal high-power control mode will generate the excitation frequency of the buffer storage tank under evaluation under the combined effect of liquid level sloshing and external disturbance. Controlled to the lower limit of the critical natural vibration risk frequency of 0.72f. n P LDT After the process, satisfy Then the sway damping of the buffer storage tank will be reset and terminated.

[0257] (7) If the duration reaches t CL4 The internal high-power control mode will generate the excitation frequency of the buffer storage tank under evaluation under the combined effect of liquid level sloshing and external disturbance. Controlled to the lower limit of the critical natural vibration risk frequency of 0.72f. n P LDT After the process, satisfy Then switch from the strong control mode of the buffer tank sway damping to the gradual control mode of the buffer tank sway damping:

[0258] ① If the sway damping of the buffer storage tank is switched from the strong control mode to the gradual control mode, and then for another period of time t... CL3 The excitation frequency under the combination of internal liquid level sloshing and external disturbance and Controlled to the lower limit of the critical natural vibration risk frequency of 0.72f. n P LDT After the process, satisfy In case of emergency, start / stop the system and close the inlet and outlet of the fluid.

[0259] ② If the sway damping of the buffer storage tank is switched from the strong control mode to the gradual control mode, and then for another period of time t... CL3 The excitation frequency under the combination of internal liquid level sloshing and external disturbance and Controlled to the lower limit of the critical natural vibration risk frequency of 0.72f. n P LDT After the process, satisfy then reset the termination buffer tank sloshing damping.

[0260] (8) If , then determine that the buffer tank to be evaluated has a high risk of forced vibration, at this time, the external disturbance balancer 1 is excited, and further, the excited external disturbance balancer 1 can control the external disturbance sloshing frequency of the buffer tank to be evaluated to the lower limit of the critical forced vibration risk frequency 63f LLi . LVFT .

[0261] (9) If the process of controlling the external disturbance sloshing frequency of the buffer tank to be evaluated to the lower limit of the critical forced vibration risk frequency 63f LLi of P LVFT in the strong control mode for a duration of t CL4 is still satisfied or , then emergency start and stop, close the liquid inlet and liquid outlet.

[0262] (10) If the process of controlling the external disturbance sloshing frequency of the buffer tank to be evaluated to the lower limit of the critical forced vibration risk frequency 63f LLi of P LVFT in the strong control mode for a duration of t CL4 is satisfied and , then reset the termination buffer tank sloshing damping.

[0263] (11) If the process of controlling the external disturbance sloshing frequency of the buffer tank to be evaluated to the lower limit of the critical forced vibration risk frequency 63f LLi of P LVFT in the strong control mode for a duration of t CL3 is satisfied and , then switch the strong control mode of the buffer tank sloshing damping to the gradual control mode of the buffer tank sloshing damping:

[0264] ① If the process of controlling the liquid level sloshing and the external disturbance combined excitation frequency to the lower limit of the critical self-vibration risk frequency 0.72f n of P LDT in the strong control mode for a duration of t CL3 is satisfied after switching from the strong control mode of the buffer tank sloshing damping to the gradual control mode of the buffer tank sloshing damping, then Then the emergency start-stop, close the liquid inlet, liquid outlet.

[0265] If the strong control mode is switched to the gradual control mode to control the sloshing damping of the buffer storage tank, the duration of the next segment is t CL3 The excitation frequency of the liquid level sloshing combined with external disturbance is The control is to the lower limit of the critical natural frequency risk frequency 0.72f n The P LDT After the process, meet Then reset the termination of the buffer storage tank sloshing damping.

[0266] Step S10043, using the second mitigation control measure, control the mitigation of the sloshing effect of the buffer storage tank to be evaluated in the disturbed evaporation state.

[0267] Specifically, according to the different second mitigation control measures determined in the above step S10042, the sloshing effect of the buffer storage tank to be evaluated in the passive evaporation state can be controlled and mitigated.

[0268] Step S1005, based on the potential working fluid category and the cold insulation layer category, the cold insulation performance of the buffer storage tank to be evaluated in the disturbed evaporation state is evaluated, and the cold insulation performance evaluation result is obtained.

[0269] Specifically, in combination with different potential working fluid categories and different cold insulation layer categories, the cold insulation performance of the buffer storage tank to be evaluated in the disturbed evaporation state can be further evaluated.

[0270] Specifically, the above step S1005 includes:

[0271] Step S10051, based on the potential working fluid category and the cold insulation layer category, the temperature data and the potential working fluid boiling point data of the buffer storage tank to be evaluated in the disturbed evaporation state are obtained.

[0272] Specifically, the working fluid boiling point data corresponding to different potential working fluid categories is different.

[0273] Step S10052, based on the temperature data and the potential working fluid boiling point data, the cold insulation performance of the buffer storage tank to be evaluated in the disturbed evaporation state is evaluated, and the cold insulation performance evaluation result is obtained.

[0274] Specifically, the temperature data monitored by the temperature monitoring device 6 on the evaporation line in the buffer storage tank to be evaluated in the disturbed evaporation state is compared, and then part of the data is compared with the boiling point data of different potential working fluid categories to define the cold insulation performance. The specific process is as follows:

[0275] 1、If the potential working fluid is R508A, the cold insulation layer of the buffer storage tank is high vacuum multilayer insulation, and the perlite, compare the temperature data monitored by the evaporation line temperature monitoring device 6 in the buffer storage tank to be evaluated under the disturbed evaporation state, and then extract part of the data and the boiling point T BR508A for comparison to define the cold insulation performance. The specific process is as follows:

[0276] (1) At a certain time t R1 , the TC Figure 3 , TC V1 , TC V2 , TC V3 , TC V4 , TC V5 , …, TC V6 , TC V7 of the evaporation line temperature monitoring device 6 shown in the figure monitor the temperature and are recorded as T R508AV1 , T R508AV2 , T R508AV3 , T R508AV4 , T R508AV5 , …, T R508AV15 , T R508AV16 (Kelvin).

[0277] (2) If all satisfy: |T R508AV1 -T R508AV2 |≤15%, |T R508AV2 -T R508AV3 |≤15%, |T R508AV3 -T R508AV4 |≤15%, |T R508AV4 -T R508AV5 |≤15%, …, |T R508AV15 -T R508AV16 |≤15%, and T R508AV1 , T r508AV2 , T R508AV3 , T R508AV4 , T R508AV5 are all ≤85% T Br508A , it is defined that the R508A cold insulation performance in the buffer storage tank to be evaluated under the disturbed evaporation state is good, and the operation is maintained.

[0278] (3) If |T R508AV1 -T R508AV2 |≤15%, |T R508AV2 -T R508AV3 |≤15%, |T R508AV3 -T R508AV4 ≤15%, T R508AV4 -T R508AV5 ≤15%, …, T R508AV15 -T R508AV16≤ 15%, and T R508AV1 ≤ 15%, and T R508AV2 ≤ 15%, and T R508AV3 ≤ 15%, and T R508AV4 ≤ 15%, and T R508AV5 ≤ 85% T BR508A If at least one of the above conditions is not met, it is determined that the R508A cooling performance of the buffer storage tank to be evaluated under the perturbed evaporation state needs to be maintained, and operation is stopped.

[0279] 2. If the potential working fluid is liquid nitrogen, the buffer storage tank cooling layer is a high-vacuum multilayer insulation, and the perlite, the temperature data monitored by the evaporation line temperature monitoring device 6 in the buffer storage tank to be evaluated under the perturbed evaporation state is compared, and then part of the data is compared with the boiling point T BN2 to determine the cooling performance. The specific process is as follows:

[0280] (1) At a certain time t N1 , the TC Figure 3 of the evaporation line temperature monitoring device 6 is shown as T V1 , T V2 , T V3 , T V4 , T V5 , …, T V19 , T V20 monitored by the temperature monitoring device 6 on the evaporation line are recorded as T N2V1 , T N2V2 , T N2V3 , T N2V4 , T N2V5 , …, T N2V19 , T N2V20 (all in Kelvin).

[0281] (2) If all satisfy: |T N2V1 -T N2V2 |≤ 6%, |T N2V2 -T N2V3 |≤ 6%, |T N2V3 -T N2V4 |≤ 6%, |T N2V4 -T N2V5 |≤ 6%, …, |T N2V19 -T N2V20 |≤ 6%, and T N2V1 , T N2V2 , T N2V3 , T N2V4 , …, T N2V13 , T N2V14 ≤ 88% T BN2 , it is determined that the liquid nitrogen cooling performance of the buffer storage tank to be evaluated under the perturbed evaporation state is good, and operation is maintained.

[0282] (3) If |T N2V1 -T N2V2 |≤ 6.5%, |T N2V2 -T N2V3 |≤ 6.5%, |T N2V3 -T N2V4 |≤ 6.5%, |T N2V4 -T N2V5 |≤ 6.5%, …, |T N2V19 -T N2V20 |≤ 6.5%, and T N2V1 , T N2V2 , T N2V3 , T N2V4 , … T N2V13 , T N2V14 are all ≤ 88% T BN2 , at least one of which does not meet, then the liquid nitrogen cooling performance of the buffer storage tank to be evaluated under the disturbed evaporation state is defined to be maintained, and the operation is stopped.

[0283] 3. If the potential working fluid is liquid hydrogen, the buffer storage tank is cooled by high vacuum multilayer insulation, and the temperature data monitored by the temperature monitoring device 6 on the evaporation line in the buffer storage tank to be evaluated under the disturbed evaporation state is compared, and then part of the data is compared with the boiling point T BH2 of liquid hydrogen to determine the cooling performance. The specific process is as follows:

[0284] (1) At a certain time t H1 , the TC Figure 3 , TC V1 , TC V2 , TC V3 , TC V4 , TC V5 , …, TC V24 , TC V25 of the temperature monitoring device 6 on the evaporation line are monitored, and the temperature is recorded as T H2V1 , T H2V2 , T H2V3 , T H2V4 , T H2V5 , …, T H2V24 , T H2V25 (Kelvin).

[0285] (2) If all satisfy: |T H2V1 -T H2V2 |≤ 1.3%, |T H2V2 -T H2V3 |≤ 1.3%, |T H2V3 -T H2V4 |≤ 1.3%, |T H2V4 -T H2V5|≤1.3%,..., |T H2V24 -T H2V25 |≤1.3%, and T H2V1 , T H2V2 , T H2V3 , T H2V4 , T H2V5 ,..., T H2V24 , T H2V25 are all ≤97.6% T BH2 , then it is determined that the liquid hydrogen cryogenic performance of the buffer storage tank to be evaluated under the perturbed evaporation state is good, and the operation is maintained.

[0286] (3) If |T H2V1 -T H2V2 |≤1.3%, |T H2V2 -T H2V3 |≤1.3%, |T H2V3 -T H2V4 |≤1.3%, |T H2V4 -T H2V5 |≤1.3%,..., |T H2V24 -T H2V25 |≤1.3%, and T H2V1 , T H2V2 , T H2V3 , T H2V4 , T H2V5 ,..., T H2V24 , T H2V25 are all ≤97.6% T BH2 , at least one of which does not meet the condition, then it is determined that the liquid hydrogen cryogenic performance of the buffer storage tank to be evaluated under the perturbed evaporation state needs to be maintained, and the operation is stopped.

[0287] Step S1006, controlling the normal operation state of the buffer storage tank to be evaluated based on the cryogenic performance evaluation result.

[0288] Specifically, according to the description of step S1005 above, it can be determined whether to maintain the normal operation state of the buffer storage tank to be evaluated in the hydrogen liquefaction station according to the cryogenic performance evaluation result.

[0289] The sloshing effect mitigation control method of the buffer storage tank for the cryogenic working medium provided in the embodiment can determine different sloshing effect identification indexes of the buffer storage tank in the passive evaporation state and the perturbed evaporation state by the different potential working medium categories faced by the buffer storage tank to be evaluated, and further, can control and mitigate the sloshing effect of the buffer storage tank in the passive evaporation state and the perturbed evaporation state respectively by combining the different sloshing effect identification indexes and the different cold insulation layer categories. By considering the different potential working media, different evaporation states, and dynamic processes of evaporation and liquid introduction and discharge operation of the hydrogen liquefaction station, different identification indexes for measuring the sloshing effect are differentiated to evaluate and mitigate the sloshing effect of the buffer storage tank in a clear and targeted manner, and the operation efficiency and safety benefits of the potential working medium buffer storage of the hydrogen liquefaction station are improved to a certain extent. Further, the cold insulation performance of the buffer storage tank to be evaluated can be evaluated by the different potential working medium categories faced by the buffer storage tank to be evaluated and the different cold insulation layer categories, and the control of the normal operation state of the buffer storage tank can be realized.

[0290] In the embodiment, a sloshing effect mitigation control device of a buffer storage tank for a cryogenic working medium is also provided, which is used to implement the above-mentioned embodiments and preferred embodiments, and will not be described again. As used below, the term “module” can be a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware is also possible and contemplated.

[0291] The embodiment provides a sloshing effect mitigation control device of a buffer storage tank for a cryogenic working medium, as shown in the accompanying drawings, which comprises: Figure 14

[0292] The acquisition module 201 is configured to acquire a potential working medium category faced by the buffer storage tank to be evaluated and a cold insulation layer category of the buffer storage tank to be evaluated.

[0293] The determination module 202 is configured to determine a first sloshing effect identification index of the buffer storage tank to be evaluated in the passive evaporation state and a second sloshing effect identification index of the buffer storage tank to be evaluated in the perturbed evaporation state respectively based on the potential working medium category.

[0294] The first mitigation control module 203 is configured to control and mitigate the sloshing effect of the buffer storage tank to be evaluated in the passive evaporation state based on the cold insulation layer category and the first sloshing effect identification index.

[0295] The second mitigation control module 204 is configured to control and mitigate the sloshing effect of the buffer storage tank to be evaluated in the perturbed evaporation state based on the cold insulation layer category and the second sloshing effect identification index.

[0296] In some optional embodiments, the determination module 202 comprises: ​

[0297] The first determining sub-module is configured to determine that the first sloshing effect identification index is the self-vibration risk and the second sloshing effect identification index is the self-vibration risk and the forced-vibration risk when the potential working medium category is R508A or liquid nitrogen.

[0298] The second determining sub-module is configured to determine that the first sloshing effect identification index is the self-vibration risk and the flash evaporation risk and the second sloshing effect identification index is the self-vibration risk, the flash evaporation risk and the forced-vibration risk when the potential working medium category is liquid hydrogen.

[0299] In some optional embodiments, the first mitigation control module 203 comprises:

[0300] The first evaluation and determination sub-module is configured to evaluate and determine the first mitigation control measure for mitigating the sloshing effect of the buffer storage tank in the passive evaporation state based on the cold insulation layer category and the first sloshing effect identification index.

[0301] The first mitigation control sub-module is configured to control the sloshing effect of the buffer storage tank in the passive evaporation state by using the first mitigation control measure.

[0302] In some optional embodiments, the first evaluation and determination sub-module comprises:

[0303] The acquisition unit is configured to acquire the first liquid level sloshing frequency and the first self-vibration frequency of the buffer storage tank in the passive evaporation state.

[0304] The evaluation unit is configured to evaluate the sloshing risk of the buffer storage tank in the passive evaporation state based on the cold insulation layer category and the first sloshing effect identification index by using the first liquid level sloshing frequency and the first self-vibration frequency, to obtain a sloshing risk evaluation result.

[0305] The determination unit is configured to determine the first mitigation control measure based on the sloshing risk evaluation result.

[0306] In some optional embodiments, the second mitigation control module 204 comprises:

[0307] The first acquisition sub-module is configured to acquire the second liquid level sloshing frequency, the second self-vibration frequency, the external disturbance sloshing frequency and the external disturbance sloshing angle of repose of the buffer storage tank in the perturbed evaporation state.

[0308] The second evaluation and determination sub-module is configured to evaluate the sloshing risk of the buffer storage tank in the perturbed evaporation state based on the cold insulation layer category and the second sloshing effect identification index by using the second liquid level sloshing frequency, the external disturbance sloshing frequency, the second self-vibration frequency and the external disturbance sloshing angle of repose, and to determine the second mitigation control measure.

[0309] The second mitigation control submodule is configured to control the sloshing effect of the buffer storage tank in the disturbance evaporation state by using a second mitigation control measure.

[0310] In some optional embodiments, the device further comprises:

[0311] The evaluation module is configured to evaluate the cold insulation performance of the buffer storage tank in the disturbance evaporation state based on the potential working medium category and the cold insulation layer category, and obtain a cold insulation performance evaluation result.

[0312] The control module is configured to control the normal operation state of the buffer storage tank based on the cold insulation performance evaluation result.

[0313] In some optional embodiments, the evaluation module comprises:

[0314] The second acquisition submodule is configured to acquire the temperature data and the potential working medium boiling point data of the buffer storage tank in the disturbance evaporation state based on the potential working medium category and the cold insulation layer category.

[0315] The evaluation submodule is configured to evaluate the cold insulation performance of the buffer storage tank in the disturbance evaporation state based on the temperature data and the potential working medium boiling point data, and obtain a cold insulation performance evaluation result.

[0316] Further function descriptions of the above-mentioned modules and units are the same as those of the corresponding embodiments, and will not be repeated here.

[0317] The sloshing effect mitigation control device for the low-temperature working medium buffer storage tank in the embodiment is presented in the form of functional units, and the units herein refer to ASIC (Application Specific Integrated Circuit, Application Specific Integrated Circuit) circuits, processors and memories executing one or more software or fixed programs, and / or other devices that can provide the above-mentioned functions.

[0318] The embodiment of the present application also provides a computer device having the above-mentioned Figure 14 sloshing effect mitigation control device for the low-temperature working medium buffer storage tank.

[0319] Please refer to Figure 15 , Figure 15 is a structural schematic diagram of a computer device provided by an optional embodiment of the present application, as shown in Figure 15As shown, the computer device includes one or more processors 10, memory 20, and interfaces 30 for external devices such as a keyboard and a mouse and peripheral devices such as disk devices or other storage devices. One or more busses 10 can be used to implement the interface between the various internal and external components and can be implemented using any one or more of a variety of bus technologies including a System bus, PCI bus, PCI Express bus, Industry Standard Architecture bus, Advanced Technology Attachment bus, Small Computer System Interface bus, and others, using any bus wires, print wires or cables, and / or using wirelessly transmitted signals. The various components communicate along the bus using various protocols and protocols. The processor 10 can process instructions for execution within the computer device, including instructions stored in the memory 20 or elsewhere by a media, such as a storage device, to display graphical information for a GUI on an external input / output device, such as a display device coupled to the interface 30. In some embodiments, multiple processors and / or multiple buses can be employed. Figure 15 The processor 10 is taken as an example.

[0320] The processor 10 can be a central processor, a network processor, or a combination thereof. The processor 10 can further include a hardware chip. The hardware chip can be an application specific integrated circuit, a programmable logic device, or a combination thereof. The programmable logic device can be a complex programmable logic device, a field programmable logic device, a general array logic, or any combination thereof.

[0321] The memory 20 stores instructions that can be executed by the at least one processor 10 to cause the at least one processor 10 to perform the methods illustrated by the above embodiments.

[0322] The memory 20 can include a program region and a data region. The program region can store an operating system and application programs required by at least one function. The data region can store data created according to the use of the computer device. In addition, the memory 20 can include a high-speed random access memory, and can further include a non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state memory device. In some alternative embodiments, the memory 20 can optionally include a memory that is remotely arranged with respect to the processor 10, and these remote memories can be connected to the computer device through a network. Examples of the network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof.

[0323] The memory 20 can include a volatile memory, such as a random access memory, and can also include a non-volatile memory, such as a flash memory, a hard disk, or a solid state disk. The memory 20 can further include a combination of the above-mentioned kinds of memories.

[0324] The computer device further includes a communication interface 30 for the computer device to communicate with other devices or communication networks.

[0325] The embodiments of the present application further provide a computer readable storage medium, and the method according to the embodiments of the present application can be implemented in hardware, firmware, or recorded in a storage medium, or stored in a remote storage medium or a non-transitory machine readable storage medium and downloaded to a local storage medium through network, so that the method described herein can be processed by such software on a storage medium using a general purpose computer, a special purpose processor, or programmable or special hardware. The storage medium can be a magnetic disk, an optical disk, a read-only memory, a random access memory, a flash memory, a hard disk, or a solid state disk, etc. Further, the storage medium can also include a combination of the above-mentioned memories. It can be understood that the computer, the processor, the microprocessor controller, or the programmable hardware includes a storage component that can store or receive software or computer code, when the software or computer code is accessed and executed by the computer, the processor, or the hardware, the method shown in the above embodiments is implemented.

[0326] Part of the present application can be applied as a computer program product, for example, computer program instructions, when executed by a computer, the operation of the computer can invoke or provide the method and / or technical solutions according to the present application. Those skilled in the art should understand that the form of computer program instructions in computer readable medium includes but is not limited to source file, executable file, installation package file, etc. Correspondingly, the way of computer program instructions executed by computer includes but is not limited to: the computer directly executes the instructions, or the computer compiles the instructions and then executes the corresponding compiled program, or the computer reads and executes the instructions, or the computer reads and installs the instructions and then executes the corresponding installed program. Here, the computer readable medium can be any available computer readable storage medium or communication medium accessible to the computer.

[0327] Although the embodiments of the present application are described in conjunction with the accompanying drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A sloshing effect mitigation control method for a low-temperature working medium buffer storage tank, characterized by, The method comprises: acquiring a potential working medium category to which a buffer storage tank to be evaluated faces and a cold insulation layer category of the buffer storage tank to be evaluated; based on the potential working medium category, determining a first sloshing effect identification index of the buffer storage tank to be evaluated in a passive evaporation state and a second sloshing effect identification index of the buffer storage tank to be evaluated in a disturbance evaporation state, respectively, the passive evaporation state representing that external disturbance is small, so that external disturbance is ignored and only the influence of liquid level change in the buffer storage tank on sloshing is considered, and the disturbance evaporation state representing that the influence of liquid level change in the buffer storage tank and external disturbance on sloshing is considered simultaneously; based on the cold insulation layer category and the first sloshing effect identification index, controlling to alleviate the sloshing effect of the buffer storage tank to be evaluated in the passive evaporation state; based on the cold insulation layer category and the second sloshing effect identification index, controlling to alleviate the sloshing effect of the buffer storage tank to be evaluated in the disturbance evaporation state.

2. The method of claim 1, wherein, Based on the potential working medium category, respectively determining a first sloshing effect identification index of the buffer storage tank to be evaluated in a passive evaporation state and a second sloshing effect identification index of the buffer storage tank to be evaluated in a disturbance evaporation state, comprising: when the potential working medium category is R508A or liquid nitrogen, determining that the first sloshing effect identification index is a self-oscillation risk, and determining that the second sloshing effect identification index is a self-oscillation risk and a forced oscillation risk; when the potential working medium category is liquid hydrogen, determining that the first sloshing effect identification index is a self-oscillation risk and a flashing risk, and determining that the second sloshing effect identification index is a self-oscillation risk, a flashing risk and a forced oscillation risk.

3. The method of claim 1, wherein, Based on the cold insulation layer category and the first sloshing effect identification index, controlling to alleviate the sloshing effect of the buffer storage tank to be evaluated in the passive evaporation state, comprising: based on the cold insulation layer category and the first sloshing effect identification index, evaluating the sloshing effect of the buffer storage tank to be evaluated in the passive evaporation state and determining a first alleviation control measure; using the first alleviation control measure, controlling to alleviate the sloshing effect of the buffer storage tank to be evaluated in the passive evaporation state.

4. The method of claim 3, wherein, Based on the cold insulation layer category and the first sloshing effect identification index, evaluating the sloshing effect of the buffer storage tank to be evaluated in the passive evaporation state and determining a first alleviation control measure, comprising: acquiring a first liquid level sloshing frequency and a first self-oscillation frequency of the buffer storage tank to be evaluated in the passive evaporation state; based on the cold insulation layer category and the first sloshing effect identification index, evaluating the sloshing risk of the buffer storage tank to be evaluated in the passive evaporation state by using the first liquid level sloshing frequency and the first self-oscillation frequency, to obtain a sloshing risk evaluation result; based on the sloshing risk evaluation result, determining the first alleviation control measure.

5. The method of claim 1, wherein, Based on the cold insulation layer category and the second sloshing effect identification index, controlling to alleviate the sloshing effect of the buffer storage tank to be evaluated in the disturbance evaporation state, comprising: acquiring a second liquid level sloshing frequency, a second self-oscillation frequency, an external disturbance sloshing frequency and an external disturbance sloshing angle of repose of the buffer storage tank to be evaluated in the disturbance evaporation state; Based on the cold insulation layer category and the second sloshing effect identification index, the sloshing risk of the buffer storage tank to be evaluated in the disturbance evaporation state is evaluated and a second mitigation control measure is determined by using the second liquid level sloshing frequency, the external disturbance sloshing frequency, the second self-vibration frequency and the external disturbance sloshing angle. The second mitigation control measure is used to control the sloshing effect of the buffer storage tank to be evaluated in the disturbance evaporation state.

6. The method of claim 1, wherein, The method further comprises: Based on the potential working medium category and the cold insulation layer category, the cold insulation performance of the buffer storage tank to be evaluated in the disturbance evaporation state is evaluated to obtain a cold insulation performance evaluation result. Based on the cold insulation performance evaluation result, the normal operation state of the buffer storage tank to be evaluated is controlled.

7. The method of claim 6, wherein, Based on the potential working medium category and the cold insulation layer category, the cold insulation performance of the buffer storage tank to be evaluated in the disturbance evaporation state is evaluated to obtain a cold insulation performance evaluation result, comprising: Based on the potential working medium category and the cold insulation layer category, temperature data and potential working medium boiling point data of the buffer storage tank to be evaluated in the disturbance evaporation state are obtained. Based on the temperature data and the potential working medium boiling point data, the cold insulation performance of the buffer storage tank to be evaluated in the disturbance evaporation state is evaluated to obtain the cold insulation performance evaluation result.

8. A device for mitigating and controlling the sloshing effect of a buffer storage tank for cryogenic working fluids, characterized in that, The device comprises: An acquisition module is configured to acquire a potential working medium category facing a buffer storage tank to be evaluated and a cold insulation layer category of the buffer storage tank to be evaluated. A determination module is configured to determine, based on the potential working medium category, a first sloshing effect identification index of the buffer storage tank to be evaluated in a passive evaporation state and a second sloshing effect identification index of the buffer storage tank to be evaluated in a disturbance evaporation state, respectively. The passive evaporation state indicates that external disturbance is small, so external disturbance is ignored and only the influence of liquid level variation in the buffer storage tank on sloshing is considered. The disturbance evaporation state indicates that the influence of liquid level variation in the buffer storage tank and external disturbance on sloshing is considered simultaneously. A first mitigation control module is configured to control, based on the cold insulation layer category and the first sloshing effect identification index, the sloshing effect of the buffer storage tank to be evaluated in the passive evaporation state. A second mitigation control module is configured to control, based on the cold insulation layer category and the second sloshing effect identification index, the sloshing effect of the buffer storage tank to be evaluated in the disturbance evaporation state.

9. A computer device, comprising: Comprise: A memory and a processor are communicatively connected between each other, the memory stores computer instructions, and the processor executes the computer instructions to perform the sloshing effect mitigation control method for the buffer storage tank of the low-temperature working medium according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer instructions, and the computer instructions are used to make the computer execute the sloshing effect mitigation control method for the buffer storage tank of the low-temperature working medium according to any one of claims 1 to 7.

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