Shaft seal leakage flow fluctuation relieving method, device, equipment, medium and product

Abstract

The invention relates to a shaft seal leakage flow fluctuation relieving method, device and equipment, a medium and a product. The method comprises the steps that in response to a leakage rate early warning prompt corresponding to a target main pump, the gas content in a pipeline corresponding to a shaft seal in the target main pump is obtained; wherein the leakage rate early warning prompt is used for prompting that the liquid leakage rate of the target main pump fluctuates; the shaft seal is used for preventing liquid in the target main pump from leaking; according to the size relation between the gas content and a preset content threshold value, a target relieving strategy is selected from the candidate relieving strategies; and processing the target main pump based on the target mitigation strategy. By means of the method, great fluctuation of shaft seal leakage flow can be relieved.

Description

Technical Field

[0001] The present application relates to the field of nuclear power technology, and in particular to a method, device, equipment, medium and product for alleviating shaft seal leakage flow fluctuation. Background Art

[0002] The reactor coolant pump, that is, the main pump of a nuclear power plant, is the power core of the primary coolant circulation of the nuclear power unit. It is responsible for efficiently transferring the core heat to the steam generator to ensure the safe and stable operation of the nuclear power unit.

[0003] The shaft seal is a key component in the main pump, used to control the leakage of coolant along the shaft, and its performance is directly related to the normal operation of the main pump. In order to monitor the status of the shaft seal, currently, the leakage flow is usually monitored by equipping a shaft seal leakage flow meter.

[0004] However, when a nuclear power unit is in operation, the leakage flow of the No. 1 shaft seal of the main pump usually fluctuates greatly, which interferes with the accurate judgment of the operating status of the main pump and affects the reliability and stability of the main pump operation. Summary of the invention

[0005] Based on this, it is necessary to provide a method, device, equipment, medium and product for alleviating shaft seal leakage flow fluctuations that can alleviate the large fluctuations in shaft seal leakage flow in response to the above-mentioned technical problems.

[0006] In a first aspect, the present application provides a method for alleviating shaft seal leakage flow fluctuation, comprising:

[0007] In response to the leakage warning prompt corresponding to the target main pump, the gas content in the pipeline corresponding to the shaft seal in the target main pump is obtained; wherein the leakage warning prompt is used to indicate that the liquid leakage of the target main pump fluctuates; the shaft seal is used to prevent liquid leakage in the target main pump;

[0008] Selecting a target mitigation strategy from candidate mitigation strategies according to a relationship between the gas content and a preset content threshold;

[0009] Based on the target mitigation strategy, the target main pump is processed.

[0010] In one embodiment, according to the relationship between the gas content and the preset content threshold, a target mitigation strategy is selected from the candidate mitigation strategies, including:

[0011] When the gas content exceeds the preset content threshold, the pipeline exhaust strategy is used as the target mitigation strategy;

[0012] When the gas content does not exceed the preset content threshold, the shaft seal clearance adjustment strategy is used as the target mitigation strategy;

[0013] Among them, the shaft seal gap adjustment strategy is used to adjust the gap between the dynamic ring and the static ring in the shaft seal.

[0014] In one embodiment, based on the target mitigation strategy, the target main pump is processed, including:

[0015] Adjust the current operating pressure of the target main pump;

[0016] Under different current operating pressures, the pipeline is exhausted by adjusting the valve opening of at least one exhaust valve corresponding to the shaft seal in the target main pump.

[0017] In one embodiment, adjusting the current operating pressure of the target main pump includes:

[0018] When the target main pump is not started and is not in the preset pre-start period, adjusting the current operating pressure of the target main pump to the first pressure;

[0019] When the target main pump is not started and is within a preset period before starting, adjusting the current operating pressure of the target main pump to a second pressure;

[0020] The first pressure is lower than the second pressure.

[0021] In one embodiment, based on the target mitigation strategy, the target main pump is processed, including:

[0022] Adjust the injection flow of the shaft seal in the target main pump to adjust the gap between the dynamic ring and the static ring in the shaft seal.

[0023] In one of the embodiments, based on the target mitigation strategy, processing the target main pump further includes:

[0024] Adjust the temperature of the liquid in the shaft seal to adjust the gap between the dynamic ring and the static ring in the shaft seal.

[0025] In a second aspect, the present application also provides a shaft seal leakage flow fluctuation mitigation device, comprising:

[0026] An acquisition module is used to respond to the leakage warning prompt corresponding to the target main pump and acquire the gas content in the pipeline corresponding to the shaft seal in the target main pump; wherein the leakage warning prompt is used to indicate that there is a fluctuation in the liquid leakage of the target main pump; the shaft seal is used to prevent liquid leakage in the target main pump;

[0027] A selection module, used for selecting a target mitigation strategy from candidate mitigation strategies according to a magnitude relationship between the gas content and a preset content threshold;

[0028] The processing module is used for processing the target main pump based on the target mitigation strategy.

[0029] In a third aspect, the present application further provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0030] In response to the leakage warning prompt corresponding to the target main pump, the gas content in the pipeline corresponding to the shaft seal in the target main pump is obtained; wherein the leakage warning prompt is used to indicate that the liquid leakage of the target main pump fluctuates; the shaft seal is used to prevent liquid leakage in the target main pump;

[0031] Selecting a target mitigation strategy from candidate mitigation strategies according to a relationship between the gas content and a preset content threshold;

[0032] Based on the target mitigation strategy, the target main pump is processed.

[0033] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the following steps are implemented:

[0034] In response to the leakage warning prompt corresponding to the target main pump, the gas content in the pipeline corresponding to the shaft seal in the target main pump is obtained; wherein the leakage warning prompt is used to indicate that the liquid leakage of the target main pump fluctuates; the shaft seal is used to prevent liquid leakage in the target main pump;

[0035] Selecting a target mitigation strategy from candidate mitigation strategies according to a relationship between the gas content and a preset content threshold;

[0036] Based on the target mitigation strategy, the target main pump is processed.

[0037] In a fifth aspect, the present application further provides a computer program product, including a computer program, which implements the following steps when executed by a processor:

[0038] In response to the leakage warning prompt corresponding to the target main pump, the gas content in the pipeline corresponding to the shaft seal in the target main pump is obtained; wherein the leakage warning prompt is used to indicate that the liquid leakage of the target main pump fluctuates; the shaft seal is used to prevent liquid leakage in the target main pump;

[0039] Selecting a target mitigation strategy from candidate mitigation strategies according to a relationship between the gas content and a preset content threshold;

[0040] Based on the target mitigation strategy, the target main pump is processed.

[0041] The above-mentioned shaft seal leakage flow fluctuation mitigation method, device, equipment, medium and product, upon receiving a leakage warning prompt, determines that the liquid leakage of the target main pump fluctuates, then detects the gas content in the pipeline corresponding to the shaft seal in the target main pump, and selects a target mitigation strategy based on the relationship between the gas content and the preset content threshold, and processes the target main pump based on the target mitigation strategy. In the above process, when processing the target main pump, the gas content in the shaft seal pipeline is considered, and the target mitigation strategy is determined based on the gas content, so that the target mitigation strategy is more matched with the current operating state of the target main pump, thereby effectively alleviating the problem of large fluctuations in the shaft seal leakage flow of the target main pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 A schematic diagram of the main pump shaft seal flow measurement principle in one embodiment;

[0044] Figure 2 A schematic diagram of the arrangement of a shaft seal leakage pipeline in an embodiment;

[0045] Figure 3 A schematic diagram of a shaft seal structure in one embodiment;

[0046] Figure 4 A schematic diagram of a flow chart of a method for alleviating shaft seal leakage flow fluctuation in one embodiment;

[0047] Figure 5A A flowchart of target mitigation strategy selection steps in one embodiment;

[0048] Figure 5B A schematic diagram of a shaft seal water filling and exhaust method in one embodiment;

[0049] Figure 6 A schematic flow chart of a method for alleviating shaft seal leakage flow fluctuation in another embodiment;

[0050] Figure 7 is a structural block diagram of a shaft seal leakage flow fluctuation mitigation device in one embodiment;

[0051] Figure 8 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0053] Before introducing the embodiments of the present application, it should be noted that the CPR1000 reactor coolant pump (main pump) is mainly divided into three parts from bottom to top: a hydraulic machinery part, including the suction port and discharge port, pump casing, impeller, diffuser, pump shaft, pump bearing and heat shield assembly; a shaft seal assembly, including No. 1 controlled leakage seal and No. 2 and No. 3 friction surface seals, all of which are located in the main flange and the sealing cover; a motor part, including a vertical squirrel cage induction motor with a set of oil-lubricated bidirectional thrust bearings, upper and lower radial bearings, a top shaft oil pump system and an inertial flywheel. At the same time, in order to monitor the operating status of the main pump, various sensors are installed on the main pump to monitor its operating parameters in real time. For example Figure 1 As shown, where V P Vibration in parallel direction to the main pump; V V The vertical vibration of the main pump; T P is the primary circuit temperature; P P is the primary circuit pressure; S f Main pump displacement 1; S S is the main pump displacement 2; P S Main pump shaft seal pressure difference; S P Main pump speed; F is The injection flow of the main pump shaft seal; T fs is the shaft seal water temperature; F fs Leakage of No. 1 shaft seal, including narrow range rotor flowmeter F fsN And wide range differential pressure flow meter F fsW ; F ss The No. 2 shaft seal is leaking.

[0054] The layout diagram of the No. 1 shaft seal leakage pipeline is introduced, such as Figure 2 As shown, the main pump shaft seal injection flow F is It enters the main pump through the pipe joint on the heat shield flange, and then is divided into two processes with different functions. One process flows downward through the pump radial bearing and the heat shield heat exchanger at a certain flow rate, and merges with the reactor coolant discharged from the impeller. It mainly cools the pump radial bearing and prevents the reactor coolant from flowing upward to prevent the high-temperature coolant that may contain impurities from flowing into the pump bearing and high-precision shaft seal. The other process flows upward through the No. 1 shaft seal at a certain flow rate, mainly forming a stable liquid film between the dynamic and static rings.

[0055] Two flow meters with different ranges and measuring principles are installed on the No. 1 shaft seal leakage pipeline: narrow range rotor flow meter FfsN Measuring range 0-500L / h, using rotor flow measurement principle; wide range differential pressure flow meter F fsW The measuring range is 0-1.5m 3 / h, using the differential pressure flow measurement principle. These two flow measurement principles are highly sensitive to gas. If there is a lot of gas in the pipeline, it will affect the No. 1 shaft seal leakage flow measurement, and the typical phenomenon is large fluctuation. Especially in the initial stage of pump startup, there is a lot of gas in the pump casing and pipeline. If the main pump shaft seal flow is put into operation at this time, the No. 1 shaft seal leakage flow measurement will show a large fluctuation phenomenon. The shaft seal leakage flow will have a large fluctuation before exhaust, and the stability will be greatly improved after exhaust.

[0056] Therefore, high gas content in the shaft seal pipeline is a factor that causes large fluctuations in shaft seal leakage flow.

[0057] In addition, if Figure 3 As shown in the figure, seal No. 1 is located above the water-lubricated radial bearing at the bottom of the main pump. It consists of two sealing rings, namely a dynamic ring fixed on the pump bearing and rotating with the shaft, and a static ring connected to the sealing chamber and not rotating but sliding up and down. The two end faces of the shaft seal dynamic ring and static ring slide relative to each other on both sides of a thin water film, and will not directly contact and cause wear. Seal No. 1 is a typical fluid static pressure type non-contact mechanical seal. During normal operation, the fluid static pressure effect is generated to push the static ring away, and a complete fluid lubricating liquid film with greater rigidity is formed between the end faces of the dynamic and static rings to lubricate and cool the dynamic and static rings. The generation of the liquid film does not depend on the rotation of the pump shaft. The pressure difference before and after the main seal is greater than 1.9Mpa, and a stable liquid film can be formed between the dynamic and static rings. The leakage flows from the outside to the inside. The seal is in a self-balancing state, maintaining a certain gap, and the dynamic and static rings will not contact.

[0058] Through a large number of tests, it is found that when the system pressure increases and the pressure difference increases, the static ring can produce a certain degree of axial displacement, the gap between the dynamic and static rings increases, and the fluctuation amplitude of the leakage flow of the No. 1 shaft seal changes, and the fluctuation amplitude may increase significantly. p After the pressure is increased to a new pressure platform, the narrow range rotor flow meter F fsN The fluctuation increases sharply. Similarly, the change of the shaft seal water temperature will also cause the static ring to produce a certain degree of axial displacement, the gap between the dynamic and static rings will change, and then the fluctuation amplitude of the No. 1 shaft seal leakage flow will change (the fluctuation amplitude will increase).

[0059] Therefore, the increase in the gap between the dynamic ring and the static ring in the shaft seal is a factor that causes large fluctuations in the shaft seal leakage flow. There are two reasons for the increase in the gap between the dynamic ring and the static ring. One is the increase in the shaft seal pressure, and the other is the change in the shaft seal water temperature.

[0060] Based on the above reasons, the present application provides a method for alleviating shaft seal leakage flow fluctuations, which can alleviate the large fluctuations in shaft seal leakage flow from the perspective of the above two reasons.

[0061] In one embodiment, Figure 4 As shown, a method for alleviating shaft seal leakage flow fluctuation is provided. This embodiment uses the method applied to a terminal as an example. It can be understood that the method can also be applied to a server, and can also be applied to a system including a terminal and a server, and is implemented through the interaction between the terminal and the server. In this embodiment, the method includes the following steps:

[0062] S410, in response to a leakage warning prompt corresponding to a target main pump, obtaining a gas content in a pipeline corresponding to a shaft seal in the target main pump.

[0063] The target main pump may be a reactor coolant pump. The leakage warning prompt is used to indicate that the liquid leakage of the target main pump has a large fluctuation; the shaft seal is used to prevent liquid leakage in the target main pump.

[0064] Exemplarily, in this embodiment, when it is detected that the shaft seal leakage flow of the target main pump fluctuates and the fluctuation is large, a leakage warning prompt is generated to trigger the detection of the shaft seal of the target main pump.

[0065] For example, in this embodiment, the gas content in the pipeline corresponding to the shaft seal in the target main pump can be detected by a gas sensor.

[0066] S420, selecting a target mitigation strategy from candidate mitigation strategies according to a magnitude relationship between the gas content and a preset content threshold.

[0067] Among them, the preset content threshold can be determined based on manual experience, and is used to determine whether the gas content in the pipeline corresponding to the shaft seal in the target main pump exceeds the standard.

[0068] In this embodiment, multiple mitigation strategies may be pre-determined as candidate mitigation strategies, and based on the relationship between the gas content and a preset content threshold, a target mitigation strategy matching the current gas content may be selected from the candidate mitigation strategies.

[0069] Exemplarily, the magnitude relationship between the gas content and a preset content threshold and candidate mitigation strategies may be input into a pre-trained strategy selection model to obtain a target mitigation strategy.

[0070] S430: Process the target main pump based on the target mitigation strategy.

[0071] In the above-mentioned shaft seal leakage flow fluctuation mitigation method, when receiving a leakage warning prompt, it is determined that the liquid leakage of the target main pump fluctuates. Then, the gas content in the pipeline corresponding to the shaft seal in the target main pump is detected, and the target mitigation strategy is selected based on the relationship between the gas content and the preset content threshold, and the target main pump is processed based on the target mitigation strategy. In the above process, when processing the target main pump, the gas content in the shaft seal pipeline is considered, and the target mitigation strategy is determined based on the gas content, so that the target mitigation strategy is more matched with the current operating state of the target main pump, thereby effectively alleviating the problem of large fluctuations in the shaft seal leakage flow of the target main pump.

[0072] Based on the technical solutions of the above embodiments, the present application also provides an optional embodiment. In this optional embodiment, the process of selecting a target mitigation strategy from candidate mitigation strategies based on the magnitude relationship between the gas content and the preset content threshold is refined.

[0073] See also Figure 5A The steps for selecting the target mitigation strategy shown include:

[0074] S510, when the gas content exceeds a preset content threshold, using a pipeline exhaust strategy as a target mitigation strategy.

[0075] Among them, the pipeline exhaust strategy is a strategy to adjust the sealing performance of the shaft seal by exhausting the pipeline.

[0076] Exemplarily, in this embodiment, when the gas content exceeds a preset content threshold, the target main pump can be processed in the following manner: adjusting the current operating pressure of the target main pump; when the target main pump is not started and is not within a preset pre-start period, adjusting the current operating pressure of the target main pump to a first pressure; when the target main pump is not started and is within a preset pre-start period, adjusting the current operating pressure of the target main pump to a second pressure; wherein the first pressure is less than the second pressure; under different current operating pressures, by adjusting the valve opening of at least one exhaust valve corresponding to the shaft seal in the target main pump, the pipeline is exhausted.

[0077] The preset pre-start period may be a preset period before the target main pump is inched, and illustratively, may be a few seconds before the inching.

[0078] In this embodiment, the pipeline can be vented multiple times, for example, see Figure 5BAs shown in the exhaust diagram, in order to prevent pressure fluctuations in the shaft seal leakage pipeline, which may cause impurities to enter the shaft seal and cause the mechanical seal to get stuck, the first exhaust can be raised to the 7 bar pressure platform and filled with water for exhaust: open RPE092VP ​​in sequence, slightly open RCP618VP, and then open RCP131VP. In order to remove the gas in the pump casing of the target main pump and the No. 1 shaft seal leakage pipeline, the second exhaust can be filled with water and exhausted at the 25 bar pressure platform before the target main pump is started: open RCV370VP (bypass valve), then open RPE092VP, slightly open RCP618VP, observe the liquid state of the peephole IC (confirm that they are all in the water entity state), and close RPE092VP, RCP618VP and RCV370VP after a certain period of time. In order to remove the gas from the pump casing of the target main pump and the No. 1 shaft seal leakage pipeline, the third exhaust can be performed by filling water and exhausting at the 25 bar pressure platform before the re-identification of the target main pump: open RPE092VP, open RCP618VP slightly, and close RPE092VP ​​and RCP618VP after a certain period of time.

[0079] S520: When the gas content does not exceed a preset content threshold, a shaft seal clearance adjustment strategy is used as a target mitigation strategy.

[0080] Among them, the shaft seal gap adjustment strategy is used to adjust the gap between the dynamic ring and the static ring in the shaft seal.

[0081] Exemplarily, in this embodiment, when the gas content does not exceed the preset content threshold, the target main pump can be processed in the following manner: adjusting the injection flow of the shaft seal in the target main pump to adjust the gap between the dynamic ring and the static ring in the shaft seal.

[0082] When adjusting the shaft seal injection flow rate, the target main pump shaft seal injection flow rate needs to meet the factory requirements. For example, the target main pump shaft seal injection flow rate F is The interval λ1 that meets the requirements <F is <λ2, where λ1 and λ2 are the minimum and maximum recommended values ​​of the shaft seal injection flow rate, respectively, which are formulated based on the manufacturer's instructions and operating experience. This range ensures the flow rate required by the shaft seal when the target main pump is operating normally;

[0083] Alternatively, adjust the temperature of the liquid in the shaft seal to adjust the gap between the dynamic ring and the static ring in the shaft seal.

[0084] When adjusting the shaft seal water temperature, the single shaft seal water temperature T fs The adjustment amount is ΔT fs , the adjustment interval time ≥ T0, mainly considering that the leakage flow of the No. 1 shaft seal will not be greatly changed during the adjustment process. At the same time, ensure that the No. 1 shaft seal leakage narrow range rotor flow meter F fsNAnd wide range differential pressure flow meter F fsW The following range is met, mainly to ensure the shaft seal flow rate required for the normal operation of the main pump shaft seal, to prevent the normal operation of the target main pump from being affected during the adjustment process, and to make it work in the normal operation area;

[0085] ;

[0086] In the formula, The minimum permissible value for the No. 1 shaft seal leakage; The maximum permissible value of the No. 1 shaft seal leakage changes with the pressure difference at the seal; It is the measured value of the rotor flow meter; It is the measured value of wide range differential pressure flow meter.

[0087] Based on the technical solutions of the above embodiments, the present application also provides an optional embodiment. In this optional embodiment, the shaft seal leakage flow fluctuation mitigation method provided by the present application is introduced in detail.

[0088] See also Figure 6 The methods shown to alleviate shaft seal leakage flow fluctuations include:

[0089] S610, in response to a leakage warning prompt corresponding to the target main pump, obtaining a gas content in a pipeline corresponding to a shaft seal in the target main pump;

[0090] Among them, the leakage warning prompt is used to prompt that the liquid leakage of the target main pump fluctuates; the shaft seal is used to prevent liquid leakage in the target main pump;

[0091] S620A, when the gas content exceeds the preset content threshold, the pressure is raised to 7 bar for the first time and water is filled and exhausted;

[0092] Continue to see Figure 5B , the specific operation steps are: turn on RPE092VP, slightly open RCP618VP, and then turn on RCP131VP;

[0093] S630A, before the target main pump is started, the pressure is raised to 25 bar and water is filled and exhausted;

[0094] Continue to see Figure 5B The specific operation steps are as follows: open RCV370VP (bypass valve), then open RPE092VP, slightly open RCP618VP, and when the liquid state representation of the peephole IC is all in the water entity state, close RPE092VP, RCP618VP and RCV370VP;

[0095] S640A, before re-qualification of the target main pump, raise the pressure to 25 bar and fill with water and exhaust;

[0096] Continue to see Figure 5B The specific operation steps are: open RPE092VP, slightly open RCP618VP, and close RPE092VP ​​and RCP618VP after a certain period of time; in this way, the gas in the main pump casing and the No. 1 shaft seal leakage pipeline is discharged;

[0097] S620B, when the gas content does not exceed the preset content threshold, adjusting the target main pump shaft seal injection flow rate by controlling the opening of the target main pump shaft seal injection valve; or adjusting the shaft seal water temperature;

[0098] For example, when adjusting the shaft seal injection flow rate, the target main pump shaft seal injection flow rate needs to meet the factory requirements. For example, the shaft seal injection flow rate F of the target main pump is is The interval λ1 that meets the requirements <F is <λ2, where λ1 and λ2 are the minimum and maximum recommended values ​​of the shaft seal injection flow rate, respectively, which are formulated based on the manufacturer's instructions and operating experience. This range ensures the flow rate required by the shaft seal when the target main pump is operating normally;

[0099] When adjusting the shaft seal water temperature, the single shaft seal water temperature T fs The adjustment amount is ΔT fs , the adjustment interval time ≥ T0, mainly considering that the leakage flow of the No. 1 shaft seal will not be greatly changed during the adjustment process. At the same time, ensure that the No. 1 shaft seal leakage narrow range rotor flow meter F fsN And wide range differential pressure flow meter F fsW The following range is met, mainly to ensure the shaft seal flow rate required for the normal operation of the main pump shaft seal, to prevent the normal operation of the target main pump from being affected during the adjustment process, and to make it work in the normal operation area;

[0100] ;

[0101] In the formula, The minimum permissible value for the No. 1 shaft seal leakage; The maximum permissible value of the No. 1 shaft seal leakage changes with the pressure difference at the seal; It is the measured value of the rotor flow meter; It is the measured value of wide range differential pressure flow meter.

[0102] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0103] Based on the same inventive concept, the embodiment of the present application also provides a shaft seal leakage flow fluctuation mitigation device for implementing the shaft seal leakage flow fluctuation mitigation method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more shaft seal leakage flow fluctuation mitigation device embodiments provided below can refer to the limitations of the shaft seal leakage flow fluctuation mitigation method above, and will not be repeated here.

[0104] In an exemplary embodiment, Figure 7 As shown, a device for alleviating shaft seal leakage flow fluctuation is provided, comprising: an acquisition module 710, a selection module 720 and a processing module 730, wherein:

[0105] The acquisition module 710 is used to obtain the gas content in the pipeline corresponding to the shaft seal in the target main pump in response to the leakage warning prompt corresponding to the target main pump; wherein the leakage warning prompt is used to indicate that the liquid leakage of the target main pump fluctuates; the shaft seal is used to prevent liquid leakage in the target main pump;

[0106] A selection module 720, configured to select a target mitigation strategy from candidate mitigation strategies according to a magnitude relationship between the gas content and a preset content threshold;

[0107] The processing module 730 is used to process the target main pump based on the target mitigation strategy.

[0108] In one embodiment, the selection module 720 includes a first selection unit, which is used to use the pipeline exhaust strategy as the target mitigation strategy when the gas content exceeds a preset content threshold; a second selection unit, which is used to use the shaft seal gap adjustment strategy as the target mitigation strategy when the gas content does not exceed the preset content threshold; wherein the shaft seal gap adjustment strategy is used to adjust the gap between the dynamic ring and the static ring in the shaft seal.

[0109] In one embodiment, the processing module 730 includes a first processing unit, including a pressure adjustment subunit, which is used to adjust the current operating pressure of the target main pump; the first processing subunit is used to perform exhaust treatment on the pipeline by adjusting the valve opening of at least one exhaust valve corresponding to the shaft seal in the target main pump under different current operating pressures.

[0110] In one embodiment, the pressure adjustment subunit is specifically used to adjust the current operating pressure of the target main pump to a first pressure when the target main pump is not started and is not within a preset pre-start period; and to adjust the current operating pressure of the target main pump to a second pressure when the target main pump is not started and is within a preset pre-start period; wherein the first pressure is less than the second pressure.

[0111] In one embodiment, the processing module 730 includes a second processing unit for adjusting the injection flow of the shaft seal in the target main pump to adjust the gap between the dynamic ring and the static ring in the shaft seal.

[0112] In one embodiment, the processing module 730 further includes a third processing unit for adjusting the temperature of the liquid in the shaft seal to adjust the gap between the dynamic ring and the static ring in the shaft seal.

[0113] Each module in the above-mentioned shaft seal leakage flow fluctuation mitigation device can be implemented in whole or in part by software, hardware and a combination thereof. Each of the above-mentioned modules can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute the operations corresponding to each of the above modules.

[0114] In an exemplary embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as shown in FIG. Figure 8As shown. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and the external device. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be realized through WIFI, a mobile cellular network, near field communication (NFC) or other technologies. When the computer program is executed by the processor, a method for alleviating shaft seal leakage flow fluctuation is realized. The display unit of the computer device is used to form a visually visible picture, which can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device shell, or an external keyboard, touchpad or mouse.

[0115] Those skilled in the art will understand that Figure 8 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0116] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0117] In response to the leakage warning prompt corresponding to the target main pump, the gas content in the pipeline corresponding to the shaft seal in the target main pump is obtained; wherein the leakage warning prompt is used to indicate that the liquid leakage of the target main pump fluctuates; the shaft seal is used to prevent liquid leakage in the target main pump;

[0118] Selecting a target mitigation strategy from candidate mitigation strategies according to a relationship between the gas content and a preset content threshold;

[0119] Based on the target mitigation strategy, the target main pump is processed.

[0120] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0121] When the gas content exceeds the preset content threshold, the pipeline exhaust strategy is used as the target mitigation strategy;

[0122] When the gas content does not exceed the preset content threshold, the shaft seal clearance adjustment strategy is used as the target mitigation strategy;

[0123] Among them, the shaft seal gap adjustment strategy is used to adjust the gap between the dynamic ring and the static ring in the shaft seal.

[0124] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0125] Adjust the current operating pressure of the target main pump;

[0126] Under different current operating pressures, the pipeline is exhausted by adjusting the valve opening of at least one exhaust valve corresponding to the shaft seal in the target main pump.

[0127] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0128] When the target main pump is not started and is not in the preset pre-start period, adjusting the current operating pressure of the target main pump to the first pressure;

[0129] When the target main pump is not started and is within a preset period before starting, adjusting the current operating pressure of the target main pump to a second pressure;

[0130] The first pressure is lower than the second pressure.

[0131] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0132] Adjust the injection flow of the shaft seal in the target main pump to adjust the gap between the dynamic ring and the static ring in the shaft seal.

[0133] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0134] Adjust the temperature of the liquid in the shaft seal to adjust the gap between the dynamic ring and the static ring in the shaft seal.

[0135] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0136] In response to the leakage warning prompt corresponding to the target main pump, the gas content in the pipeline corresponding to the shaft seal in the target main pump is obtained; wherein the leakage warning prompt is used to indicate that the liquid leakage of the target main pump fluctuates; the shaft seal is used to prevent liquid leakage in the target main pump;

[0137] Selecting a target mitigation strategy from candidate mitigation strategies according to a relationship between the gas content and a preset content threshold;

[0138] Based on the target mitigation strategy, the target main pump is processed.

[0139] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0140] When the gas content exceeds the preset content threshold, the pipeline exhaust strategy is used as the target mitigation strategy;

[0141] When the gas content does not exceed the preset content threshold, the shaft seal clearance adjustment strategy is used as the target mitigation strategy;

[0142] Among them, the shaft seal gap adjustment strategy is used to adjust the gap between the dynamic ring and the static ring in the shaft seal.

[0143] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0144] Adjust the current operating pressure of the target main pump;

[0145] Under different current operating pressures, the pipeline is exhausted by adjusting the valve opening of at least one exhaust valve corresponding to the shaft seal in the target main pump.

[0146] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0147] When the target main pump is not started and is not in the preset pre-start period, adjusting the current operating pressure of the target main pump to the first pressure;

[0148] When the target main pump is not started and is within a preset period before starting, adjusting the current operating pressure of the target main pump to a second pressure;

[0149] The first pressure is lower than the second pressure.

[0150] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0151] Adjust the injection flow of the shaft seal in the target main pump to adjust the gap between the dynamic ring and the static ring in the shaft seal.

[0152] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0153] Adjust the temperature of the liquid in the shaft seal to adjust the gap between the dynamic ring and the static ring in the shaft seal.

[0154] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:

[0155] In response to the leakage warning prompt corresponding to the target main pump, the gas content in the pipeline corresponding to the shaft seal in the target main pump is obtained; wherein the leakage warning prompt is used to indicate that the liquid leakage of the target main pump fluctuates; the shaft seal is used to prevent liquid leakage in the target main pump;

[0156] Selecting a target mitigation strategy from candidate mitigation strategies according to a relationship between the gas content and a preset content threshold;

[0157] Based on the target mitigation strategy, the target main pump is processed.

[0158] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0159] When the gas content exceeds the preset content threshold, the pipeline exhaust strategy is used as the target mitigation strategy;

[0160] When the gas content does not exceed the preset content threshold, the shaft seal clearance adjustment strategy is used as the target mitigation strategy;

[0161] Among them, the shaft seal gap adjustment strategy is used to adjust the gap between the dynamic ring and the static ring in the shaft seal.

[0162] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0163] Adjust the current operating pressure of the target main pump;

[0164] Under different current operating pressures, the pipeline is exhausted by adjusting the valve opening of at least one exhaust valve corresponding to the shaft seal in the target main pump.

[0165] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0166] When the target main pump is not started and is not in the preset pre-start period, adjusting the current operating pressure of the target main pump to the first pressure;

[0167] When the target main pump is not started and is within a preset period before starting, adjusting the current operating pressure of the target main pump to a second pressure;

[0168] The first pressure is lower than the second pressure.

[0169] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0170] Adjust the injection flow of the shaft seal in the target main pump to adjust the gap between the dynamic ring and the static ring in the shaft seal.

[0171] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0172] Adjust the temperature of the liquid in the shaft seal to adjust the gap between the dynamic ring and the static ring in the shaft seal.

[0173] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0174] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0175] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0176] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A method for alleviating shaft seal leakage flow fluctuation, characterized in that: The method comprises: In response to the leakage warning prompt corresponding to the target main pump, the gas content in the pipeline corresponding to the shaft seal in the target main pump is obtained; wherein the leakage warning prompt is used to indicate that there is a fluctuation in the liquid leakage of the target main pump; the shaft seal is used to prevent liquid leakage in the target main pump; Selecting a target mitigation strategy from candidate mitigation strategies according to a magnitude relationship between the gas content and a preset content threshold; Based on the target mitigation strategy, the target main pump is processed.

2. The method according to claim 1, characterized in that The step of selecting a target mitigation strategy from candidate mitigation strategies according to the magnitude relationship between the gas content and a preset content threshold comprises: In the event that the gas content exceeds a preset content threshold, using a pipeline exhaust strategy as a target mitigation strategy; In the case where the gas content does not exceed a preset content threshold, a shaft seal clearance adjustment strategy is used as a target mitigation strategy; The shaft seal clearance adjustment strategy is used to adjust the clearance between the dynamic ring and the static ring in the shaft seal.

3. The method according to claim 2, characterized in that The processing of the target main pump based on the target mitigation strategy includes: adjusting the current operating pressure of the target main pump; Under different current operating pressures, the pipeline is exhausted by adjusting the valve opening of at least one exhaust valve corresponding to the shaft seal in the target main pump.

4. The method according to claim 3, characterized in that: The adjusting the current operating pressure of the target main pump includes: When the target main pump is not started and is not in a preset pre-start period, adjusting the current operating pressure of the target main pump to a first pressure; When the target main pump is not started and is within a preset period before starting, adjusting the current operating pressure of the target main pump to a second pressure; Wherein, the first pressure is lower than the second pressure.

5. The method according to claim 2, characterized in that: The processing of the target main pump based on the target mitigation strategy includes: The injection flow of the shaft seal in the target main pump is adjusted to adjust the gap between the dynamic ring and the static ring in the shaft seal.

6. The method according to claim 5, characterized in that The processing of the target main pump based on the target mitigation strategy further includes: The temperature of the liquid in the shaft seal is adjusted to adjust the gap between the dynamic ring and the static ring in the shaft seal.

7. A shaft seal leakage flow fluctuation mitigation device, characterized in that: The device comprises: an acquisition module, configured to obtain the gas content in the pipeline corresponding to the shaft seal in the target main pump in response to the leakage warning prompt corresponding to the target main pump; wherein the leakage warning prompt is used to indicate that there is a fluctuation in the liquid leakage of the target main pump; the shaft seal is used to prevent liquid leakage in the target main pump; A selection module, configured to select a target mitigation strategy from candidate mitigation strategies according to a magnitude relationship between the gas content and a preset content threshold; A processing module is used to process the target main pump based on the target mitigation strategy.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

Images