Injection rate measuring device and injection rate measuring method

Abstract

The invention discloses an injection rate measuring device and an injection rate measuring method, and belongs to the technical field of measurement and test, the injection rate measuring device comprises a memory and a measuring assembly, the memory can be connected with an injection assembly, and an outlet of the memory can be communicated with an inlet of the injection assembly; the measuring assembly can communicate with an outlet of the injection assembly and an inlet of the storage, the measuring assembly comprises a metering module, a back pressure valve and a pressure sensor, the metering module can be connected with the injection assembly, and an inlet of the metering module can communicate with the outlet of the injection assembly; an inlet of the back pressure valve is communicated with an outlet of the metering module; the back pressure valve is connected with the storage, and an outlet of the back pressure valve can be communicated with an inlet of the storage; the pressure sensor can be in communication with the outlet of the injection assembly. By arranging the back pressure valve, the fluid can be kept in a liquid state, fluid parameters can be conveniently collected, and the measurement error of the injection rate can be reduced.

Description

Technical Field

[0001] This application belongs to the field of measurement and testing technology, specifically relating to a jet rate measuring device and a jet rate measuring method. Background Technology

[0002] Injection rate determines combustion efficiency, output power, etc. Measuring injection rate can calibrate the parameters of injectors and injection systems, making it easier to improve injectors and injection systems.

[0003] However, since the measuring device cannot guarantee that the fluid inside it is in a stable state, it is difficult to collect various parameters about the jet rate, and the measurement results have large errors. Summary of the Invention

[0004] Purpose of the invention: This application provides a jet rate measuring device to solve the technical problem of large jet rate measurement error; another purpose of this application is to provide a jet rate measuring method.

[0005] Technical solution: This application provides a jet rate measuring device for testing jet components, the jet rate measuring device comprising: A memory, wherein the memory is connectable to the injection assembly, and the outlet of the memory is connected to the inlet of the injection assembly; A measuring component is provided, which connects the outlet of the injection component and the inlet of the memory. The measuring component includes a metering module, a back pressure valve, and a pressure sensor. The metering module is connected to the injection component, and its inlet is connected to the outlet of the injection component. The inlet of the back pressure valve is connected to the outlet of the metering module. The back pressure valve is connected to the memory, and its outlet is connected to the inlet of the memory. The pressure sensor is connected to the outlet of the injection component.

[0006] In some embodiments, the injection rate measuring device further includes a pressurization component, the inlet of which is connected to the outlet of the memory, the pressurization component being connectable to the injection component, and the outlet of the pressurization component being connected to the inlet of the injection component.

[0007] In some embodiments, the measuring component further includes a mass flow meter connected to the outlet of the metering module and the inlet of the back pressure valve.

[0008] In some embodiments, the jet rate measuring device further includes: Collect components; A first switching component has a first outlet and a second outlet. The inlet of the first switching component is connected to the outlet of the back pressure valve. The first outlet is connected to the inlet of the memory, and the second outlet is connected to the collection component. The first switching component is used to connect the outlet of the back pressure valve and the inlet of the memory; or, to connect the outlet of the back pressure valve and the collection component.

[0009] In some embodiments, the jet rate measuring device further includes: Inert gas source; The second switching component has a first inlet and a second inlet. The first inlet is connected to the outlet of the memory, and the second inlet is connected to the inert gas source. The outlet of the second switching component can be connected to the inlet of the injection component.

[0010] In some embodiments, the jet rate measuring device further includes: A third switching component, the inlet of which is connected to the outlet of the second switching component, the third switching component having a third outlet and a fourth outlet, the third outlet being connected to the inlet of the injection component, and the fourth outlet being connected to the inlet of the metering module.

[0011] In some embodiments, the measuring component further includes a fixing member having a third inlet and a fourth inlet, the third inlet of the fixing member being able to communicate with the outlet of the injection component, the fourth inlet being able to communicate with the fourth outlet, and the outlet of the fixing member being able to communicate with the inlet of the metering module.

[0012] In some embodiments, the pressure sensor is connected to the outlet of the fixture.

[0013] In some embodiments, the outlet of the memory can be connected to the inlet of a plurality of parallel injection components; the injection rate measuring device includes a plurality of the measuring components, and the outlet of each injection component and the inlet of the memory are connected through one of the measuring components.

[0014] In some embodiments, the jet rate measuring device further includes a housing having a receiving cavity, the memory being disposed outside the housing, and the measuring component being disposed in the receiving cavity.

[0015] Accordingly, this application also provides a method for measuring injection rate, employing an injection rate measuring device as described in any of the above embodiments, comprising: The memory, the injection assembly, the pressure sensor, the metering module, and the back pressure valve are connected to form a loop; Adjust the back pressure valve so that the back pressure at the outlet of the metering module is greater than the first pressure, where the first pressure is the vaporization pressure of the liquid. Activate the spraying assembly so that the liquid can be sprayed toward the metering module; This enables the pressure sensor to acquire transient pressure fluctuation signals at a first sampling rate and transmit them to the control component.

[0016] In some embodiments, it also includes: The pressurization device is activated to pressurize the liquid flowing out of the storage container to a second pressure before delivering it to the injection assembly.

[0017] In some embodiments, the mass flow meter acquires the average mass flow rate at the outlet of the metering module at a second sampling rate and transmits it to the control component.

[0018] In some embodiments, it also includes: Connect the inert gas source, the metering module, the back pressure valve, and the collection assembly; The metering module, the back pressure valve, the collection assembly, and the pipelines connected to the metering module, the back pressure valve, and the collection assembly are inertized.

[0019] In some embodiments, it also includes: Adjust the back pressure valve so that the back pressure at the outlet of the metering module is equal to the pressure in the memory. Connect the inert gas source, the metering module, the back pressure valve, and the collection assembly; The metering module, the back pressure valve, the collection assembly, and the pipelines connected to the metering module, the back pressure valve, and the collection assembly are purged.

[0020] Beneficial Effects: Compared with the prior art, the jet rate measuring device provided in this application includes a memory and a measuring component. The memory can be connected to the jet component, and the outlet of the memory can be connected to the inlet of the jet component. The measuring component can connect the outlet of the jet component and the inlet of the memory. The measuring component includes a metering module, a back pressure valve, and a pressure sensor. The metering module can be connected to the jet component, and the inlet of the metering module can be connected to the outlet of the jet component. The inlet of the back pressure valve is connected to the outlet of the metering module. The back pressure valve is connected to the memory, and the outlet of the back pressure valve can be connected to the inlet of the memory. The pressure sensor is connected to the outlet of the jet component. By setting a back pressure valve, this application can ensure that the pressure of the fluid in the pipeline between the jet component and the memory is greater than the vaporization pressure, keeping the fluid in a liquid state. This reduces fluctuations in parameters such as density and flow rate used in jet rate calculations, facilitates fluid parameter acquisition, and reduces measurement errors in jet rate. Attached Figure Description

[0021] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0022] Figure 1 This is a connection diagram of the jet rate measuring device provided in the embodiments of this application; Figure 2 This is a flowchart of the jet rate measurement method provided in the embodiments of this application; Figure 3 This is a flowchart of the jet rate measurement method provided in some embodiments of this application; Figure 4 This is a flowchart of the jet rate measurement method provided in some embodiments of this application; Figure 5 This is a flowchart of the jet rate measurement method provided in some embodiments of this application; Figure 6 This is a flowchart illustrating the jet rate measurement method provided in some embodiments of this application.

[0023] Explanation of reference numerals in the attached figures: 10-Injection assembly; 100-Memory; 200-Measuring assembly; 210-Metering module; 220-Back pressure valve; 230-Pressure sensor; 240-Mass flow meter; 250-Fixed component; 251-Third inlet; 252-Fourth inlet; 300-Boosting assembly; 400-Collection assembly; 500-First switching assembly; 510-First outlet; 520-Second outlet; 600-Inert gas source; 700-Second switching assembly; 710-First inlet; 720-Second inlet; 800-Third switching assembly; 810-Third outlet; 820-Fourth outlet; 900-Housing; 910-Receiving cavity. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for mutual communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically limited. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0026] The following disclosure provides many different implementations or examples for carrying out different structures of this application. To simplify the disclosure of this application, the components and arrangements of specific examples are described below. Of course, these are merely examples and are not intended to limit this application.

[0027] Injection rate determines combustion efficiency, output power, etc. Measuring injection rate can calibrate the parameters of injectors and injection systems, making it easier to improve injectors and injection systems.

[0028] However, since the measuring device cannot guarantee that the fluid inside it is in a stable state, it is difficult to collect various parameters about the jet rate, and the measurement results have large errors.

[0029] Specifically, liquefied gases are easily vaporized at normal temperature and pressure, causing the liquid to partially vaporize after being ejected by the spraying component. This results in fluctuations in parameters related to the spraying rate, such as density and flow rate, making it difficult to calculate the spraying rate or leading to large errors.

[0030] To address the aforementioned technical problem of large injection rate errors, the first embodiment of this application provides an injection rate measuring device. (See [link to relevant documentation]). Figure 1The jet rate measuring device is used to test the jet rate of the jet assembly 10 installed thereon. The jet rate measuring device includes a memory 100 and a measuring component 200. The memory 100 can be connected to the jet assembly 10, and the outlet of the memory 100 can be connected to the inlet of the jet assembly 10. The measuring component 200 can connect the outlet of the jet assembly 10 and the inlet of the memory 100. The measuring component 200 includes a metering module 210, a back pressure valve 220, and a pressure sensor 230. The metering module 210 can be connected to the jet assembly 10, and the inlet of the metering module 210 can be connected to the outlet of the jet assembly 10. The inlet of the back pressure valve 220 is connected to the outlet of the metering module 210. The back pressure valve 220 is connected to the memory 100, and the outlet of the back pressure valve 220 can be connected to the inlet of the memory 100. The pressure sensor 230 can be connected to the outlet of the jet assembly 10.

[0031] The injection assembly 10 can be a liquefied gas injector.

[0032] In some embodiments, the storage 100 is a liquefied gas pressure vessel, that is, the liquefied gas is in a liquid state within the storage 100.

[0033] Specifically, when liquefied gas is injected by the injection assembly 10 into the metering module 210, transient pressure fluctuations are generated within the measuring assembly 200. The pressure sensor 230 can collect this fluctuation signal and transmit it to the control assembly for calculation of the injection rate. Further, the fluctuation signal collected by the pressure sensor 230 at a first sampling rate is p(t) Pa, the cross-sectional area of ​​the coil in the metering module 210 is A m², the speed of sound of the fluid (i.e., liquefied gas) is am / s, the density of the fluid (i.e., liquefied gas) is ρ kg / m³, and the injection rate is q = Ap(t) / aρ.

[0034] In some embodiments, the back pressure valve 220 is used to control the back pressure of the liquefied gas ejected by the injection assembly 10 in the measuring assembly 200, so that the back pressure of the liquefied gas at the temperature in the measuring assembly 200 can be greater than the vaporization pressure of the liquefied gas, so that the liquefied gas ejected by the injection assembly 10 remains in a liquid state in the measuring assembly 200.

[0035] In some embodiments, the injection rate measuring device further includes multiple pipelines for connecting the various components within the injection rate measuring device. In some embodiments, the memory 100 is connected to the injection assembly 10 via pipelines; the injection assembly 10 is connected to the metering module 210 via pipelines; the metering module 210 is connected to the back pressure valve 220 via pipelines; and the back pressure valve 220 is connected to the memory 100 via pipelines.

[0036] In the above embodiment, by providing a back pressure valve 220 within the measuring component 200, the liquefied gas can be maintained in a liquid state within the measuring component 200. Firstly, keeping the liquefied gas in a liquid state ensures that its density ρ remains constant. Therefore, during the calculation of the injection rate, it is not necessary to consider the impact of density ρ changes due to the phase change of the liquefied gas, which facilitates the calculation and improves the accuracy of the injection rate calculation results. Secondly, since liquid liquefied gas has a higher density than gaseous liquefied gas and is less compressible, transient pressure fluctuations generated within the measuring component 200 are more easily captured by the pressure sensor 230. This results in smaller measurement errors and more accurate measurement results for the injection rate measuring device.

[0037] In some embodiments, please refer to Figure 1 The injection rate measuring device also includes a booster assembly 300, the inlet of which is connected to the outlet of the memory 100. The booster assembly 300 can be connected to the injection assembly 10, and the outlet of the booster assembly 300 can be connected to the inlet of the injection assembly 10.

[0038] The pressurization component 300 can pressurize the liquefied gas that is about to flow to the injection component 10.

[0039] In the above embodiments, by setting a pressurization component 300 between the memory 100 and the injection component 10 to provide the injection component 10 with high-pressure fluid that meets the requirements, the pressure during injection can be stabilized, the influence of fluid pressure fluctuations caused by other factors on the measurement results can be reduced, the injection process can be made uniform each time, the measurement results can be more accurate, and the measurement difficulty can be reduced.

[0040] In addition, since the fluid is in the loop when the jet rate testing device is working, the pressure in the loop can be kept stable by setting up a pressurization device, thereby reducing the impact of pressure fluctuations in the loop on the signal acquisition of the pressure sensor 230.

[0041] In some embodiments, please refer to Figure 1 The measuring component 200 also includes a mass flow meter 240, which is connected to the outlet of the metering module 210 and the inlet of the back pressure valve 220.

[0042] Among them, the mass flow meter 240 is used to collect the average mass flow rate of liquefied gas in the measuring component 200, that is, the average flow rate over a certain period of time, and transmit it to the control component.

[0043] In the above embodiments, the mass flow meter 240 is configured to collect the average mass flow rate within the measurement component 200 when the pressure sensor 230 collects transient pressure fluctuations, thus complementing each other. Specifically, the control component can compare the integral value of the injection rate calculated from the average mass flow rate and the transient pressure fluctuation p(t), establish a correction coefficient, compensate for the deviation of a single metering method, and make the injection rate output by the control component more accurate. Furthermore, in some embodiments, the control component has an alarm mechanism. When abnormal conditions such as pipeline leakage or pressure wave interference occur, the signal collected by the pressure sensor 230 becomes abnormal, causing the deviation between the injection rate calculated by the control component and the average mass flow rate collected by the mass flow meter 240 to exceed a preset threshold. The control component can determine whether the measurement and calculation process is reliable through consistency verification and trigger an alarm.

[0044] In some embodiments, the jet rate measuring device further includes a collecting component 400 and a first switching component 500. The first switching component 500 has a first outlet 510 and a second outlet 520. The inlet of the first switching component 500 is connected to the outlet of the back pressure valve 220, the first outlet 510 is connected to the inlet of the memory 100, and the second outlet 520 is connected to the collecting component 400. The first switching component 500 is used to connect the outlet of the back pressure valve 220 and the inlet of the memory 100; or, it connects the outlet of the back pressure valve 220 and the collecting component 400.

[0045] In some embodiments, the collection component 400 is a waste liquid collection tank.

[0046] In some embodiments, the first switching component 500 is a reversing valve, used to connect one of the first outlet 510 and the second outlet 520 to the inlet of the first switching component 500, that is, to connect one of the inlet of the control memory 100 and the collection component 400 to the back pressure valve 220.

[0047] In some embodiments, the first switching assembly 500 includes two ball valves connected in parallel, the inlets of which are respectively connected to the outlet of the back pressure valve 220, and the outlets of the two ball valves are a first outlet 510 and a second outlet 520, respectively.

[0048] In the above embodiment, by setting up the collection component 400 and the first switching component 500, the fluid in the pipeline can be discharged from the second outlet 520 to the collection component 400, so as to facilitate the discharge of gas in the pipeline when inerting, purging and injecting liquid into the pipeline.

[0049] Specifically, during inerting, the outlet of the back pressure valve 220 is connected to the collection assembly 400 so that the inert gas can flow from the outlet of the back pressure valve 220 to the collection assembly 400 and exit the pipeline, thus preventing the gas from being introduced into the storage 100. During liquid injection, the outlet of the back pressure valve 220 is connected to the collection assembly 400 so that some of the liquefied gas can flow to the collection assembly 400 through the outlet of the back pressure valve 220, thereby venting the gas in the pipeline. During purging, the outlet of the back pressure valve 220 is connected to the collection assembly 400 to blow the purged fluid in the pipeline toward the collection assembly 400, thereby preventing the gas and fluid in the pipeline from being introduced into the memory 100.

[0050] In some embodiments, please refer to Figure 1 The injection rate measuring device also includes an inert gas source 600 and a second switching component 700. The second switching component 700 has a first inlet 710 and a second inlet 720. The first inlet 710 is connected to the outlet of the memory 100, and the second inlet 720 is connected to the inert gas source 600. The outlet of the second switching component 700 can be connected to the inlet of the injection component 10.

[0051] Specifically, the inert gas source 600 can provide inert gas to the second inlet 720 of the second switching component 700; in some embodiments, the inert gas source 600 is a nitrogen source.

[0052] In some embodiments, the second switching component 700 is a reversing valve, used to connect one of the first inlet 710 and the second inlet 720 to the inlet of the injection component 10, that is, to connect one of the outlet of the control memory 100 and the inert gas source 600 to the inlet of the injection component 10.

[0053] In some embodiments, the first switching assembly 500 includes two ball valves connected in parallel, the outlets of which are connected to the inlet of the injection assembly 10, and the inlets of the two ball valves are a first inlet 710 and a second inlet 720, respectively.

[0054] In the above embodiment, by setting an inert gas source 600 and setting a second switching component 700, the inert gas source 600 can replace the memory 100 to connect to the pipeline, so as to inertize the pipeline.

[0055] In some embodiments, please refer to Figure 1 The injection rate measuring device also includes a third switching component 800. The inlet of the third switching component 800 is connected to the outlet of the second switching component 700. The third switching component 800 has a third outlet 810 and a fourth outlet 820. The third outlet 810 can be connected to the inlet of the injection component 10, and the fourth outlet 820 is connected to the inlet of the metering module 210.

[0056] In some embodiments, the third switching component 800 is a reversing valve, used to connect one of the third outlet 810 and the fourth outlet 820 to the inlet of the third switching component 800, that is, to connect one of the inlet of the injection component 10 and the inlet of the metering module 210 to the outlet of the second switching component 700.

[0057] In some embodiments, the third switching component 800 includes two ball valves connected in parallel, the inlets of which are respectively connected to the outlets of the second switching component 700, and the outlets of the two ball valves are respectively the third outlet 810 and the fourth outlet 820.

[0058] In the above embodiment, by setting the third switching component 800, the injection component 10 that has been installed on the injection rate measuring device can be separated, which facilitates the disassembly and assembly of the injection component 10 and allows the inert gas to bypass the injection component 10 during purging and inerting.

[0059] In some embodiments, please refer to Figure 1 The measuring component 200 also includes a fixing member 250, which has a third inlet 251 and a fourth inlet 252. The third inlet 251 of the fixing member 250 is connected to the outlet of the injection component 10, and the fourth inlet 252 is connected to the fourth outlet 820. The outlet of the fixing member 250 is connected to the inlet of the metering module 210.

[0060] In some embodiments, the fixing member 250 is a jetter fixing base.

[0061] In the above embodiment, the spray assembly 10 is fixed by setting the fastener 250 and connecting the outlet of the spray assembly 10 with the measuring assembly 200, thereby facilitating the assembly and disassembly of the spray assembly 10.

[0062] In some embodiments, please refer to Figure 1 The pressure sensor 230 is connected to the outlet of the fixture 250.

[0063] In the above embodiment, by connecting the pressure sensor 230 to the outlet of the fixing member 250, the fixing member 250 can also serve to fix the pressure sensor 230. Additionally, it facilitates the replacement of the pressure sensor 230.

[0064] In some embodiments, the outlet of the memory 100 can be connected to the inlet of a plurality of parallel injection components 10; the injection rate measuring device includes a plurality of measuring components 200, and the outlet of each injection component 10 and the inlet of the memory 100 are connected through a measuring component 200.

[0065] In some embodiments, please refer to Figure 1The jet rate measuring device also includes a housing 900, which has a receiving cavity 910. A memory 100 is disposed outside the housing 900, and a measuring component 200 is disposed in the receiving cavity 910.

[0066] In the above embodiments, by placing the measuring component 200 in the receiving cavity 910, the measuring component 200 can be kept at a relatively stable temperature, thereby reducing the fluctuation of various fluid parameters and improving the accuracy of the measurement.

[0067] In some embodiments, the metering module 210 is a long-tube metering module 210.

[0068] Specifically, the metering module 210 is the Bosch long-tube method metering module 210.

[0069] Accordingly, this application also provides a method for measuring injection rate; please refer to [link / reference]. Figure 2 The device employs a jet rate measuring device as described in any of the above embodiments, comprising a connected memory 100, a jet assembly 10, a pressure sensor 230, a metering module 210, and a back pressure valve 220, forming a loop; the back pressure valve 220 is adjusted so that the back pressure at the outlet of the metering module 210 is greater than a first pressure, the first pressure being the vaporization pressure of the liquid; the jet assembly 10 is activated so that the liquid can be sprayed toward the metering module 210; the pressure sensor 230 acquires the signal of transient pressure fluctuation at a first sampling rate and transmits it to the control component.

[0070] The liquid is the liquid sprayed by the spraying component 10.

[0071] Among them, the forming circuit, namely the back pressure valve 220, is connected to the memory 100.

[0072] Specifically, the first sampling rate is the frequency at which the pressure sensor 230 samples. In some embodiments, the first sampling rate can be one of or a range between any two of the following: 1 kHz, 2 kHz, 3 kHz, 4 kHz, 5 kHz, 6 kHz, 7 kHz, 8 kHz, 9 kHz, 10 kHz, 11 kHz, 12 kHz, 13 kHz, 14 kHz, 15 kHz, 16 kHz, 17 kHz, 18 kHz, 19 kHz, and 20 kHz.

[0073] In the above embodiments, firstly, by connecting the memory 100, the injection assembly 10, the pressure sensor 230, the metering module 210, and the back pressure valve 220 to form a circuit, the fluid in the memory 100 can be supplied to the injection assembly 10, and the fluid ejected by the injection assembly 10 can be recovered. Secondly, the back pressure valve 220 is adjusted so that the back pressure at the outlet of the metering module 210 is greater than a first pressure, so that the liquefied gas ejected by the injection assembly 10 remains in a liquid state, facilitating the acquisition of various parameters of the liquefied gas. The back pressure being greater than the first pressure is under the same temperature conditions; that is, the first back pressure is the pressure at which the liquefied gas vaporizes when it is at the temperature within the measuring assembly 200.

[0074] In some embodiments, please refer to Figure 3 It also includes activating a pressurization device to pressurize the liquid flowing out of the storage 100 to a second pressure before delivering it to the injection assembly 10.

[0075] The second pressure is the pressure required by the injection assembly 10.

[0076] In the above embodiments, by activating the pressurization device to provide the injection assembly 10 with high-pressure fluid that meets the requirements, the pressure during injection can be stabilized, reducing the impact of fluid pressure fluctuations caused by other factors on the measurement results, making each injection process uniform, the measurement results more accurate, and the measurement difficulty lower.

[0077] In addition, since the fluid is in the loop when the jet rate testing device is working, the pressure in the loop can be kept stable by setting up a pressurization device, thereby reducing the impact of pressure fluctuations in the loop on the signal acquisition of the pressure sensor 230.

[0078] In some embodiments, please refer to Figure 4 This allows the mass flow meter 240 to collect the average mass flow rate at the outlet of the metering module 210 at a second sampling rate and transmit it to the control component.

[0079] Specifically, the second sampling rate is the sampling frequency of the mass flow meter 240. In some embodiments, the second sampling rate can be one of or a range between any two of the following: 1 kHz, 2 kHz, 3 kHz, 4 kHz, 5 kHz, 6 kHz, 7 kHz, 8 kHz, 9 kHz, 10 kHz, 11 kHz, 12 kHz, 13 kHz, 14 kHz, 15 kHz, 16 kHz, 17 kHz, 18 kHz, 19 kHz, and 20 kHz.

[0080] In the above embodiments, a mass flow meter 240 is used to collect the average mass flow rate to complement the transient pressure fluctuations collected by the pressure sensor 230. Specifically, the control component can compare the integral value of the injection rate calculated from the average mass flow rate and the transient pressure fluctuation p(t), establish a correction coefficient, compensate for the deviation of a single metering method, and make the injection rate output by the control component more accurate. Furthermore, in some embodiments, the control component has an alarm mechanism. When abnormal conditions such as pipeline leakage or pressure wave interference occur, the signal collected by the pressure sensor 230 is abnormal, which may cause the deviation between the injection rate calculated by the control component and the average mass flow rate collected by the mass flow meter 240 to exceed a preset threshold. The control component can determine whether the measurement and calculation process is reliable through consistency verification and trigger an alarm.

[0081] In some embodiments, please refer to Figure 5 It also includes: connecting an inert gas source 600, a metering module 210, a back pressure valve 220, and a collection component 400; and inertizing the metering module 210, the back pressure valve 220, the collection component 400, and the pipelines connected to the metering module 210, the back pressure valve 220, and the collection component 400 respectively.

[0082] In some embodiments, the inerting operation is applied before liquefied gas is injected into the pipeline.

[0083] In the above embodiments, inerting can remove air and other impurities from the circuit and establish a stable environment, avoiding interference with liquefied gas injection and testing accuracy. Additionally, it can also prevent safety risks.

[0084] In some embodiments, please refer to Figure 6 It also includes: adjusting the back pressure valve 220 so that the back pressure at the outlet of the metering module 210 is equal to the pressure in the memory 100; connecting the inert gas source 600, the metering module 210, the back pressure valve 220 and the collection component 400; and purging the metering module 210, the back pressure valve 220 and the collection component 400 and the pipelines connected to the metering module 210, the back pressure valve 220 and the collection component 400 respectively.

[0085] In some embodiments, before purging the metering module 210, the back pressure at the outlet of the metering module 210, the back pressure valve 220, and the collection component 400, and the pipelines connected to the metering module 210, the back pressure valve 220, and the collection component 400 respectively, it is necessary to wait for the back pressure at the outlet of the metering module 210 to stabilize.

[0086] In the above embodiments, purging can clean the circuit after the measurement is completed and restore the equipment to its state, providing a safety guarantee for the next measurement or shutdown.

[0087] The following is an embodiment of a specific method for measuring injection rate: 1. Inertization: (1) Connecting the air source, pressurization component 300, injection component 10, fixing component 250, metering module 210, mass flow meter 240, back pressure valve 220 and collection component 400; (2) Gas source supply to achieve inerting; 2. Liquefied petroleum gas (LPG) introduction: (1) Connecting the memory 100, the pressurization assembly 300, the fixing component 250, the metering module 210, the mass flow meter 240, the back pressure valve 220 and the collection assembly 400; (2) Introduce liquefied gas until some of the liquefied gas flows into the collection assembly 400 from the back pressure valve 220; (3) Disconnect the back pressure valve 220 from the collection assembly 400, and connect the back pressure valve 220 and the memory 100; (4) Adjust the back pressure valve 220 so that the back pressure at the outlet of the metering module 210 is greater than the first pressure, which is the vaporization pressure of the liquid; (5) Start the pressurization component 300 to pressurize the liquid flowing out of the storage 100 to the second pressure and then deliver it to the injection component 10; 3. Data Collection: (1) Connect the memory 100, the pressurization component 300, the injection component 10, the fixing component 250, the metering module 210, the mass flow meter 240, and the back pressure valve 220, with the back pressure valve 220 connected to the memory 100; (2) The pressure sensor 230 and the mass flow meter 240 respectively collect signals and transmit them to the control component; 4. Purge: (1) Turn off the booster unit 300; (2) Adjust the back pressure valve 220 so that the pressure in the measuring component 200 is the same as the pressure in the memory 100; (3) Wait for the back pressure at the outlet of metering module 210 to stabilize; (4) Connect the gas source, pressurization component 300, fixing component 250, metering module 210, mass flow meter 240, back pressure valve 220 and collection component 400; (5) The gas source supplies gas and continues for a period of time.

[0088] The above provides a detailed description of the jet rate measuring device and jet rate measuring method provided in the embodiments of this application. Specific examples have been used in this application to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A jet rate measuring device, characterized in that, For testing the injection assembly (10), the injection rate measuring device includes: A memory (100) is connected to the injection assembly (10), and the outlet of the memory (100) is connected to the inlet of the injection assembly (10). A measuring component (200) is provided, which is connected to the outlet of the injection component (10) and the inlet of the memory (100). The measuring component (200) includes a metering module (210), a back pressure valve (220), and a pressure sensor (230). The metering module (210) is connected to the injection component (10), and the inlet of the metering module (210) is connected to the outlet of the injection component (10). The inlet of the back pressure valve (220) is connected to the outlet of the metering module (210). The back pressure valve (220) is connected to the memory (100), and the outlet of the back pressure valve (220) is connected to the inlet of the memory (100). The pressure sensor (230) is connected to the outlet of the injection component (10).

2. The jet rate measuring device according to claim 1, characterized in that, The injection rate measuring device further includes a booster assembly (300), the inlet of which is connected to the outlet of the memory (100), the booster assembly (300) can be connected to the injection assembly (10), and the outlet of the booster assembly (300) can be connected to the inlet of the injection assembly (10).

3. The jet rate measuring device according to claim 1, characterized in that, The measuring component (200) also includes a mass flow meter (240), which is connected to the outlet of the metering module (210) and the inlet of the back pressure valve (220).

4. The jet rate measuring device according to claim 1, characterized in that, The jet rate measuring device also includes: Collection components (400); A first switching component (500) has a first outlet (510) and a second outlet (520). The inlet of the first switching component (500) is connected to the outlet of the back pressure valve (220). The first outlet (510) is connected to the inlet of the memory (100). The second outlet (520) is connected to the collection component (400). The first switching component (500) is used to connect the outlet of the back pressure valve (220) and the inlet of the memory (100); or, to connect the outlet of the back pressure valve (220) and the collection component (400).

5. The jet rate measuring device according to claim 4, characterized in that, The jet rate measuring device also includes: Inert gas source (600); The second switching component (700) has a first inlet (710) and a second inlet (720), the first inlet (710) being connected to the outlet of the memory (100), the second inlet (720) being connected to the inert gas source (600), and the outlet of the second switching component (700) being connected to the inlet of the injection component (10).

6. The jet rate measuring device according to claim 5, characterized in that, The jet rate measuring device also includes: The third switching component (800) has an inlet connected to the outlet of the second switching component (700), and has a third outlet (810) and a fourth outlet (820). The third outlet (810) is connected to the inlet of the injection component (10), and the fourth outlet (820) is connected to the inlet of the metering module (210).

7. The jet rate measuring device according to claim 6, characterized in that, The measuring component (200) further includes a fixing member (250) having a third inlet (251) and a fourth inlet (252). The third inlet (251) of the fixing member (250) is connected to the outlet of the injection component (10), the fourth inlet (252) is connected to the fourth outlet (820), and the outlet of the fixing member (250) is connected to the inlet of the metering module (210).

8. The jet rate measuring device according to claim 7, characterized in that, The pressure sensor (230) is connected to the outlet of the fixture (250).

9. The jet rate measuring device according to claim 1, characterized in that, The outlet of the memory (100) can be connected to the inlet of a plurality of parallel injection components (10); the injection rate measuring device includes a plurality of measuring components (200), and the outlet of each injection component (10) and the inlet of the memory (100) are connected through one of the measuring components (200).

10. The jet rate measuring device according to claim 1, characterized in that, The jet rate measuring device also includes a housing (900) having a receiving cavity (910), a memory (100) disposed outside the housing (900), and a measuring component (200) disposed in the receiving cavity (910).

11. A method for measuring jet rate, characterized in that, The jet rate measuring device as described in any one of claims 1 to 10 comprises: The memory (100), the injection assembly (10), the pressure sensor (230), the metering module (210), and the back pressure valve (220) are connected in sequence to form a loop; Adjust the back pressure valve (220) so that the back pressure at the outlet of the metering module (210) is greater than the first pressure, where the first pressure is the vaporization pressure of the liquid; The spray assembly (10) is activated so that the liquid can be sprayed toward the metering module (210). This causes the pressure sensor (230) to acquire the signal of transient pressure fluctuation at a first sampling rate and transmit it to the control component.

12. The jet rate measurement method according to claim 11, characterized in that, Also includes: The pressurization device is activated to pressurize the liquid flowing out of the storage container (100) to a second pressure and then deliver it to the injection assembly (10).

13. The jet rate measurement method according to claim 11, characterized in that, This causes the mass flow meter (240) to collect the average mass flow at the outlet of the metering module (210) at a second sampling rate and transmit it to the control component.

14. The jet rate measurement method according to claim 11, characterized in that, Also includes: Connect the inert gas source (600), the metering module (210), the back pressure valve (220), and the collection assembly (400). The metering module (210), the back pressure valve (220), the collection component (400), and the pipelines connected to the metering module (210), the back pressure valve (220), and the collection component (400) are inertized.

15. The jet rate measurement method according to claim 11, characterized in that, Also includes: Adjust the back pressure valve (220) so that the back pressure at the outlet of the metering module (210) is equal to the pressure inside the memory (100); Connect the inert gas source (600), the metering module (210), the back pressure valve (220), and the collection assembly (400). The metering module (210), the back pressure valve (220), the collection component (400), and the pipelines connected to the metering module (210), the back pressure valve (220), and the collection component (400) are purged.

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