Test device for measuring the drainage capacity of compressible fluids

Abstract

This application relates to the technical field of ship drainage, and discloses a test device for measuring the drainage capacity of compressible fluids, including a first simulation chamber, a second simulation chamber, a power chamber, and a flow monitoring mechanism; the first simulation chamber has a first chamber with high-pressure air therein; the second simulation chamber has a second chamber filled with water, and the second chamber is selectively connected to the first chamber through a first pipeline; a first storage chamber for storing compressible fluids is provided in the power chamber, and the first storage chamber is selectively connected to the second chamber; the flow monitoring mechanism is arranged on the first pipeline, and the flow monitoring mechanism is adapted to detect the amount of water flowing from the second chamber into the first chamber when the compressible fluids in the first storage chamber continuously enter the second chamber. The test device for measuring the drainage capacity of compressible fluids in this application improves the accuracy.

Description

Technical Field

[0001] This application relates to the technical field of ship drainage, and particularly to a test device for measuring the drainage capacity of compressible fluids. Background Art

[0002] When a ship is sailing, it is necessary to adjust the trim or overall buoyancy by injecting and draining water from different water tanks. The existing injection and drainage methods are mainly pump-driven drainage and gas-driven drainage. Among them, gas-driven drainage is to introduce pre-stored high-pressure compressed compressible fluids, such as air, nitrogen, carbon dioxide, etc., into the water tank to press out part of the water pressure in the water tank outside the ship. Its advantage is that there is no need to set up an additional power source or consume electric energy, so it is widely used. Compared with the pump-driven drainage scheme, the disadvantage of the gas-driven drainage scheme is that the compressible fluid drains water by relying on its compressed expansion effect. This expansion process requires a certain amount of time, making it difficult to quantitatively control the actual ship's displacement, and the displacement control result is often inaccurate. It is necessary to provide a quantitative test device for the drainage capacity of different media under different pressure conditions on land to test and determine the drainage capacity in advance for quantitative control in actual ship use. Summary of the Invention

[0003] This application provides a test device for measuring the drainage capacity of compressible fluids, which improves the accuracy of the test device.

[0004] To achieve the above object, the main technical solutions adopted in this application include:

[0005] In a first aspect, an embodiment of this application provides a test device for measuring the drainage capacity of compressible fluids, including a first simulation chamber, a second simulation chamber, a power chamber, and a flow monitoring mechanism; the first simulation chamber has a first chamber with high-pressure air inside; the second simulation chamber has a second chamber filled with water, and the second chamber is selectively communicable with the first chamber through a first pipeline; a first storage chamber for storing compressible fluid is provided in the power chamber, and the first storage chamber is selectively communicable with the second chamber; the flow monitoring mechanism is arranged on the first pipeline, and the flow monitoring mechanism is adapted to detect the amount of water flowing from the second chamber into the first chamber when the compressible fluid in the first storage chamber continuously enters the second chamber.

[0006] The test device for measuring the drainage capacity of compressible fluids proposed in the embodiment of this application simulates the interaction between high-pressure gas and liquid through the first simulation chamber and the second simulation chamber, thereby simulating different pressure environments, facilitating the acquisition of accurate test conditions, and thus improving the accuracy of test results. The flow monitoring mechanism can accurately measure the flow rate when water is transferred from the second chamber to the first chamber, and can reduce the influence of environmental factors on the test results before and after water transfer, thereby improving the accuracy of the test device for measuring the drainage capacity of compressible fluids.

[0007] Optionally, the first pipeline is connected to the bottom of the first simulation chamber and the bottom of the second simulation chamber.

[0008] In the above solution, the bottom connection method helps the stable transmission of the fluid and reduces the influence of gravity on the fluid transmission. In the simulation system, when the fluid needs to be transmitted between two simulation chambers, the pipeline connected at the bottom can ensure that the fluid can flow along a relatively stable path, reducing the influence of turbulence and resistance, thereby improving the accuracy of the test device for measuring the drainage capacity of compressible fluid.

[0009] Optionally, when the second chamber is filled with water and the first chamber is not connected to the second chamber, there is water stored in the first chamber, and the height of the water level line in the first chamber is not lower than the height of the first pipeline.

[0010] In the above solution, when the water level line in the first chamber is higher than the height of the first pipeline, it can play a liquid sealing effect, preventing high-pressure air from entering the first pipeline and then entering the first chamber, thereby reducing the probability of inaccurate flow monitoring of the first pipeline caused by high-pressure air, and thus improving the accuracy of the test device for measuring the drainage capacity of compressible fluid.

[0011] Optionally, the compressible fluid includes at least one of carbon dioxide, nitrogen, and air.

[0012] In the above solution, carbon dioxide, nitrogen, and air are all easy to compress and have high fluidity, and can quickly pass through pipelines or valves, which helps to improve the reliability of the test device for measuring the drainage capacity of compressible fluid.

[0013] Optionally, a first drain valve is provided at the bottom of the second simulation chamber, and a first exhaust valve is provided at the top of the second simulation chamber. The first drain valve and the first exhaust valve can be selectively connected to the second chamber.

[0014] In the above solution, the first drain valve is located at the bottom of the second simulation chamber, which can reduce the flow resistance and mixing time of water in the chamber, thereby improving the water injection efficiency, enabling the water to fill the entire chamber more quickly, and reducing the probability of residual gas when the water is filled. The first exhaust valve is located at the top, ensuring that the gas can escape smoothly from a high place, helping to quickly release the gas in the second simulation chamber, reducing the probability of gas accumulation in the simulation chamber to form an air chamber, and thus reducing the probability of gas remaining in the second simulation chamber, which helps to improve the accuracy of the test device for measuring the drainage capacity of compressible fluid.

[0015] Optionally, a first overflow port is further provided at the top of the second simulation chamber, and the first overflow port can be selectively connected to the second chamber.

[0016] In the above solution, the first overflow port can play the role of overflow, improving the safety of the second simulation chamber. When the pressure in the second simulation chamber exceeds the safety value, pressure relief can be carried out through the first overflow port, thus ensuring the safety of the second simulation chamber and helping to improve the safety of the test device for measuring the drainage capacity of compressible fluids.

[0017] Optionally, the first exhaust valve is configured as the first overflow port.

[0018] In the above solution, the first exhaust valve can exhaust air when the second simulation chamber is being filled with water, and can also detect whether the water is full. At the same time, it can optionally exhaust air during the test of the second simulation chamber, reducing the additional outlet of the second simulation chamber and helping to ensure the airtightness of the second simulation chamber.

[0019] Optionally, a first isolation valve is provided on the first pipeline, and a second drain port is provided at the bottom of the first simulation chamber, and the second drain port can be selectively communicated with the first chamber.

[0020] In the above solution, the setting of the first isolation valve allows for flexible on-off control of the first pipeline. Setting the second drain port at the bottom of the first simulation chamber can reduce the flow resistance and mixing time of water in the chamber, thereby improving the water injection efficiency and helping to ensure that the part of the first pipeline connected to the first simulation chamber is completely filled with water, reducing the probability of high-pressure gas affecting flow monitoring, and thus improving the accuracy of the test device.

[0021] Optionally, a first air supply valve and a second exhaust valve are provided at the top of the first simulation chamber, and both the first air supply valve and the first exhaust valve can be selectively communicated with the first chamber.

[0022] In the above solution, the first air supply valve can input high-pressure air into the first simulation chamber. By precisely controlling the opening degree and duration of the air supply valve, precise regulation of the gas pressure, flow rate and composition in the simulation chamber can be achieved. The second exhaust valve can then discharge the high-pressure gas in the first simulation chamber to change the pressure in the first simulation chamber, helping to maintain the environmental stability in the first simulation chamber, and thus improving the accuracy of the test device.

[0023] Optionally, a first pressure detection mechanism for detecting the pressure in the first chamber is provided on the first simulation chamber.

[0024] In the above solution, the first pressure detection mechanism can real-time monitor the pressure change in the first chamber, thus facilitating precise control of the pressure conditions of the test and helping to improve the accuracy and reliability of the test.

[0025] Optionally, a second isolation valve is provided between the power chamber and the second simulation chamber, and the second isolation valve can selectively communicate the first storage chamber with the second chamber.

[0026] In the above solution, the first storage chamber is selectively communicated with the second chamber through the second isolation valve, thereby controlling the material flow between the first storage chamber and the second chamber, making the communication between the power bin and the second simulation bin controllable, achieving precise control of the test conditions, and helping to improve the test accuracy.

[0027] Optionally, the test device for measuring the drainage capacity of the compressible fluid further includes a total control unit, a first sub-control unit, and a second sub-control unit. The total control unit is communicatively connected to the first sub-control unit and the second sub-control unit respectively;

[0028] The first sub-control unit is communicatively connected to the second isolation valve and the first exhaust valve, and the second sub-control unit is communicatively connected to the first isolation valve, the first gas supply valve, and the second exhaust valve.

[0029] In the above solution, the communication connection between the total control unit and each sub-control unit can monitor the states of each sub-control unit and the corresponding devices in real time, realizing further automatic control, and helping to improve the test accuracy. Description of the Drawings

[0030] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0031] Figure 1 It is the overall system block diagram in some embodiments of the present application;

[0032] Figure 2 It is the schematic diagram of the communication connection of the first sub-control unit in some embodiments of the present application;

[0033] Figure 3 It is the schematic diagram of the test process in some embodiments of the present application.

[0034]

Description of the Reference Numerals

[0035] 100: First simulation chamber; 110: First chamber; 120: Second drain port; 140: First gas supply valve; 150: Second exhaust valve; 160: First pressure detection mechanism; 170: First liquid level gauge;

[0036] 200: Second simulation chamber; 210: Second chamber; 220: First drain valve; 230: First exhaust valve; 240: First overflow port; 250: Second liquid level gauge;

[0037] 300: Power compartment; 310: First storage chamber; 320: Second isolation valve;

[0038] 400: Flow monitoring mechanism;

[0039] 500: First pipeline; 510: First isolation valve;

[0040] 600: Total control unit; 610: First sub-control unit; 620: Second sub-control unit. Detailed implementation manner

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some but not all of the embodiments of this application. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0042] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and are not used to describe a specific order or primary-secondary relationship.

[0043] Referring to "embodiment" in this application means that the specific features, structures, or characteristics described in connection with the embodiment may be included in at least one embodiment of this application. The phrase appears in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those of ordinary skill in the art explicitly and implicitly understand that the embodiments described in this application can be combined with other embodiments.

[0044] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] In this application, the term "and / or" is merely a description of the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, in this application, the character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0046] In this application, "multiple" means two or more (including two). Similarly, "multiple groups" means two or more groups (including two groups), and "multiple pieces" means two or more pieces (including two pieces).

[0047] When a ship is sailing, it is necessary to adjust the trim or overall buoyancy by filling and draining water in different water tanks. The existing filling and draining methods are mainly pump-driven drainage and gas-driven drainage. Among them, gas-driven drainage is to introduce a pre-stored high-pressure compressible fluid, such as air, nitrogen, carbon dioxide, etc., into the water tank to pump out part of the water pressure in the water tank. Its advantage is that no additional power source needs to be set or electric energy is consumed, so it is widely used. Compared with the pump-driven drainage scheme, the disadvantage of the gas-driven drainage scheme is that the compressible fluid drains water by relying on its compressed expansion effect. This expansion process requires a certain amount of time, resulting in difficulties in accurately controlling the quantitative drainage of the actual ship, and it is often inaccurate.

[0048] In view of this, in order to improve the accuracy of the test device for measuring the drainage capacity of compressible fluids, the embodiments of this application provide a test device for measuring the drainage capacity of compressible fluids. Please refer to Figure 1 and Figure 2 , including a first simulation chamber 100, a second simulation chamber 200, a power chamber 300, and a flow monitoring mechanism 400.

[0049] The first simulation chamber 100 has a first chamber 110, and there is high-pressure air in the first chamber 110. It can be understood that the high-pressure air in the first chamber 110 can provide pressure, thereby changing the pressure in the first chamber 110, which is helpful for conducting tests under different pressure conditions, and thus helpful for accurately obtaining the drainage volume under different pressures.

[0050] The second simulation chamber 200 has a second chamber 210 filled with water. The second chamber 210 is selectively connected to the first chamber 110 through a first pipeline 500. It can be understood that when the second chamber 210 is connected to the first chamber 110 through the first pipeline 500, the water in the second chamber 210 is under the pressure of the compressed air in the first chamber 110, so that the pressures in the first chamber 110 and the second chamber 210 are the same.

[0051] That is to say, when the second chamber 210 is not connected to the first chamber 110, the first chamber 110 and the second chamber 210 form two independent chambers, so that the high-pressure air in the first chamber 110 will not affect the water in the second chamber 210, which helps the independent input and output of the high-pressure air in the first chamber 110, and thus independently completes the pressure regulation.

[0052] With such a setting, on the one hand, it can prevent the high-pressure gas in the first chamber 110 from entering the second chamber 210 due to pressure, reducing the probability of premature change of the internal pressure of the second chamber 210. On the other hand, it can prevent the water in the second chamber 210 from entering the first chamber 110, thereby ensuring the detection accuracy of the second chamber 210.

[0053] In addition, the non-connected first chamber 110 and second chamber 210 can also facilitate the water injection of the second chamber 210, reduce the influence of pressure on the water injection process, and thus improve the water injection efficiency.

[0054] A first storage chamber 310 for storing compressible fluid is provided in the power chamber 300. The first storage chamber 310 is selectively connected to the second chamber 210. It can be understood that when the first storage chamber 310 is connected to the second chamber 210, the compressible fluid in the first storage chamber 310 can enter the second chamber 210, thereby squeezing the water in the second chamber 210 and realizing drainage.

[0055] When the first storage chamber 310 is not connected to the second chamber 210, the first storage chamber 310 and the second chamber 210 form two independent chambers, so that the compressible fluid in the first storage chamber 310 will not affect the water in the second chamber 210, which helps the smooth injection of water into the second chamber 210. At the same time, the compressible fluid is separated from the water, reducing the probability of premature interaction between the compressible fluid and the water, and thus improving the accuracy of the test.

[0056] The flow rate monitoring mechanism 400 is arranged in the first pipeline 500. It can be understood that the flow rate monitoring mechanism 400 can accurately measure the flow rate in the first pipeline 500, so as to obtain accurate test results.

[0057] As an example, the flow rate monitoring mechanism 400 can be arranged inside the first pipeline 500 to monitor the flow rate inside the first pipeline 500. Or, the flow rate monitoring mechanism 400 can divide the first pipeline 500 into two sections. The flow rate monitoring mechanism 400 has an input end and an output end, and the input end and the output end of the flow rate monitoring mechanism 400 are respectively connected to the two sections of the first pipeline 500 to monitor the flow rate of the liquid flowing through the first pipeline 500.

[0058] As an example, the flow monitoring mechanism 400 can be snap-connected, bolt-fixed, or sleeved on the first pipeline 500, and the present application does not limit this.

[0059] The flow monitoring mechanism 400 is adapted to detect the water flow rate from the second chamber 210 to the first chamber 110 when the compressible fluid in the first storage chamber 310 continuously enters the second chamber 210. It can be understood that when the compressible fluid in the first storage chamber 310 continuously enters the second chamber 210, the pressure in the second chamber 210 rises, thereby squeezing the water in the second chamber 210 through the first pipeline 500 into the first chamber 110. By monitoring the water flow rate of the first pipeline 500 at this time through the flow monitoring mechanism 400, an accurate drainage test result can be obtained.

[0060] In the above solution, the interaction between high-pressure gas and liquid is simulated through the first simulation chamber 100 and the second simulation chamber 200, thereby simulating different pressure environments, facilitating the acquisition of accurate test conditions, and thus improving the accuracy of test results. The flow monitoring mechanism 400 can accurately measure the flow rate of the first pipeline 500 when the water is transferred from the second chamber 210 to the first chamber 110, can reduce the influence of environmental factors on the test results before and after water transfer, helps to improve the accuracy of the monitoring results, and thus improves the accuracy of the test device for measuring the drainage capacity of compressible fluids.

[0061] In some other embodiments, please refer to Figure 1 The first pipeline 500 is connected to the bottom of the first simulation chamber 100 and the bottom of the second simulation chamber 200, thereby reducing the probability of high-pressure air entering the first pipeline 500 and improving the accuracy of flow rate monitoring of the first pipeline 500.

[0062] As an example, the ratio range of the liquid level height in the first simulation chamber 100 to the diameter of the first pipeline 500 is 1.2 - 2.5.

[0063] By optimizing the ratio range of the liquid level height in the first simulation chamber 100 to the diameter of the first pipeline 500 to 1.2 - 2.5, on the one hand, it ensures that there is sufficient liquid seal pressure in the first simulation chamber 100, reduces the probability of gas entering the first pipeline 500, and thus reduces the gas-liquid mixing rate in the first pipeline 500. On the other hand, it can reduce the probability of high-pressure gas in the first simulation chamber 100 flushing back into the first pipeline 500 during the test, which helps to improve the test accuracy.

[0064] Optionally, the ratio of the liquid level height in the first simulation chamber 100 to the diameter of the first pipeline 500 can be 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.1, 2.2, 2.3, 2.4, 2.5.

[0065] As an example, the first pipeline 500 can be welded, clamped, bolted or screwed to the first simulation chamber 100 and the second simulation chamber 200. The material of the first pipeline 500 can be the same as that of the first simulation chamber 100 and the second simulation chamber 200 or can be set to different materials respectively. This application does not make any limitations on this.

[0066] Specifically, there is an inclined surface between one end of the first pipeline 500 connected to the second simulation chamber 200. The inclined surface extends from the first simulation chamber 100 to the second simulation chamber 200 along the extension direction of the first pipeline 500, and at the same time, the height of the inclined surface gradually decreases along the vertical direction.

[0067] The inclination angle between the inclined surface and the vertical direction is 5°-10°, which enhances the self-draining ability and further reduces the gas-liquid mixing rate in the first pipeline 500.

[0068] As an example, a spiral guide vane structure is provided in the first pipeline 500, and the guide angle is 30°-45°. It can play a role in suppressing turbulence during the test, reduce the influence of turbulence on the volumetric flowmeter, and help improve the accuracy of the test results.

[0069] As an example, the first pipeline 500 is detachably connected to the first simulation chamber 100 and the second simulation chamber 200 to realize the replaceability of the first pipeline 500. The first pipeline 500 can be replaced with pipelines of different diameters to realize the drainage test under different diameters.

[0070] The bottom connection method helps the stable transmission of the fluid and reduces the influence of gravity on the fluid transmission. In the simulation system, when the fluid needs to be transmitted between two simulation chambers, the pipeline connected at the bottom can ensure that the fluid can flow along a relatively stable path, reducing the influence of turbulence and resistance, thereby improving the accuracy of the test device for measuring the drainage capacity of compressible fluids.

[0071] In some other embodiments, when the second chamber 210 is filled with water and the first chamber 110 is not connected to the second chamber 210, water is stored in the first chamber 110, and the height of the water level line in the first chamber 110 is not lower than the height of the first pipeline 500.

[0072] It can be understood that when the water level line in the first chamber 110 is higher than the height of the first pipeline 500, a liquid seal effect can be achieved, preventing high-pressure air from entering the first pipeline 500 and then entering the first chamber 110, thereby reducing the probability of inaccurate flow monitoring of the first pipeline 500 caused by high-pressure air.

[0073] In some other embodiments, the compressible fluid includes at least one of carbon dioxide, nitrogen and air.

[0074] It is understandable that carbon dioxide, nitrogen, and air are all easily compressible and have high fluidity, and can quickly pass through pipelines or valves, which helps to improve the reliability of the test device for measuring the drainage capacity of compressible fluids.

[0075] In some other embodiments, please refer to Figure 1 , a first drain valve 220 is provided at the bottom of the second simulation chamber 200. It is understandable that the first drain valve 220 can play a role in injecting water into the second simulation chamber 200, and the first drain valve 220 is located at the bottom of the second simulation chamber 200. Compared with injecting water from the top or side, injecting water from the bottom can reduce the flow resistance and mixing time of water in the chamber, thereby improving the water injection efficiency and enabling water to fill the entire chamber more quickly.

[0076] In addition, it can also reduce the probability of residual gas in the first pipeline 500, ensure that the first chamber 110 and the connected part of the first pipeline 500 are filled with water, which helps to improve the test accuracy.

[0077] In addition, the first drain valve 220 can also play a role in draining water. The first drain valve 220 is located at the bottom of the simulation chamber and can quickly drain the accumulated water or excess liquid in the simulation chamber.

[0078] A first exhaust valve 230 is provided at the top of the second simulation chamber 200. It is understandable that the first exhaust valve 230 can play a role in exhausting gas, ensuring that the gas can escape smoothly from a high place, which helps to quickly release the gas in the second simulation chamber 200, reduce the probability of air accumulating in the simulation chamber to form an air chamber, and thus reduce the probability of gas remaining in the second simulation chamber 200, which helps to improve the accuracy of the test device for measuring the drainage capacity of compressible fluids.

[0079] At the same time, the first exhaust valve 230 located at the top of the second simulation chamber 200 can also reduce the probability of water flowing out from the first exhaust valve 230 during the water injection process, thereby reducing the probability of water hindering gas discharge.

[0080] Both the first drain valve 220 and the first exhaust valve 230 can be selectively communicated with the second chamber 210. It is understandable that the first drain valve 220 and the first exhaust valve 230 can be selectively communicated with the second chamber 210 according to actual needs.

[0081] When both the first exhaust valve 230 and the first drain valve 220 are in communication with the second chamber 210, and the first drain valve 220 functions to drain water, the first exhaust valve 230 can function to input air to balance the air pressure. Moreover, the first exhaust valve 230 located at the top of the second simulation chamber 200 ensures that the air input path does not affect the drainage. The first drain valve 220 located at the bottom of the second simulation chamber 200 can smoothly drain the water, reducing the probability of interference with the input air and, by utilizing the effect of gravity, reducing the probability of drainage residue.

[0082] When both the first exhaust valve 230 and the first drain valve 220 are in communication with the second chamber 210, and the first drain valve 220 functions to inject water, the first exhaust valve 230 can function to discharge air to balance the air pressure. Moreover, the first exhaust valve 230 located at the top of the second simulation chamber 200 ensures that the air discharge path does not affect the water injection. The first drain valve 220 located at the bottom of the second simulation chamber 200 can smoothly inject the water, and helps to reduce the probability of residual gas in the first pipeline 500, ensuring that the first chamber 110 and the connected part of the first pipeline 500 are filled with water, thereby helping to improve the test accuracy.

[0083] When neither the first drain valve 220 nor the first exhaust valve 230 is in communication with the second chamber 210, it can be understood that the second chamber 210 forms a closed space with stable pressure, which helps to improve the test accuracy.

[0084] In some other embodiments, please refer to Figure 1 ., a first overflow port 240 is further provided at the top of the second simulation chamber 200. The first overflow port 240 is selectively in communication with the second chamber 210. It can be understood that the first overflow port 240 can function for overflow, improving the safety of the second simulation chamber 200. When the pressure in the second simulation chamber 200 exceeds the safety value, pressure relief can be carried out through the first overflow port 240, thereby ensuring the safety of the second simulation chamber 200 and helping to improve the safety of the test device for measuring the drainage capacity of compressible fluids.

[0085] Alternatively, the first exhaust valve 230 is configured as the first overflow port 240.

[0086] In some other embodiments, please refer to Figure 1 ., a first isolation valve 510 is provided on the first pipeline 500. The first isolation valve 510 can function for isolation, enabling the first pipeline 500 to be selectively internally conducted. It can be understood that the setting of the first isolation valve 510 allows for flexible on-off control of the first pipeline 500.

[0087] When the first isolation valve 510 is in a closed state, it can effectively isolate the fluid connection between the first chamber 110 and the second chamber 210, so that the first chamber 110 and the second chamber 210 can form two independent cavities, which helps the first chamber 110 and the second chamber 210 to input and output different media respectively, reducing the probability of interference between different media.

[0088] When the first isolation valve 510 is in the open state, the first pipeline 500 is internally conducted, so that the first chamber 110 and the second chamber 210 can be connected through the first pipeline 500 to form a connected chamber, so that the pressures of the first chamber 110 and the second chamber 210 are the same, thereby further ensuring the accuracy of the test.

[0089] As an example, the opening of the first isolation valve 510 is adjustable. By adjusting the opening of the first isolation valve 510, the fluid flow through the first pipeline 500 can be accurately controlled, thereby facilitating drainage capacity tests under different flow areas, thereby simulating drainage capacity tests under different blockage conditions in the pipeline, further improving the accuracy of the test.

[0090] A second drain port 120 is provided at the bottom of the first simulation chamber 100. It can be understood that the second drain port 120 can drain or inject water into the second simulation chamber 200, and setting the second drain port 120 at the bottom of the first simulation chamber 100 can reduce the flow resistance and mixing time of water in the chamber, thereby improving the water injection efficiency, and helping to ensure that the part of the first pipeline 500 connected to the first simulation chamber 100 is completely filled with water, reducing the probability of high-pressure gas affecting flow monitoring.

[0091] In addition, water can be discharged smoothly during drainage, reducing the chance of interference with high-pressure air, and using gravity to reduce the chance of drainage residue.

[0092] The second drain port 120 may be selectively connected to the first chamber 110. It is understandable that when the second drain port 120 is not connected to the first chamber 110, the first chamber 110 may form a closed space, thereby helping to improve the accuracy of the test.

[0093] In other embodiments, please refer to Figure 1 A first air supply valve 140 and a second air exhaust valve 150 are disposed on the top of the first simulation chamber 100 , and both the first air supply valve 140 and the second air exhaust valve 150 can be selectively connected to the first chamber 110 .

[0094] It can be understood that the first air supply valve 140 can input high-pressure air into the first simulation chamber 100. By precisely controlling the opening degree and duration of the first air supply valve 140, precise regulation of the gas pressure, flow rate, and composition within the first simulation chamber 100 can be achieved.

[0095] The second exhaust valve 150, on the other hand, can appropriately discharge the high-pressure gas within the first simulation chamber 100 to change the pressure within the first simulation chamber 100, which helps to maintain the environmental stability within the first simulation chamber 100.

[0096] As an example, there are multiple second exhaust valves 150, and multiple second exhaust valves 150 are all arranged at the top of the first simulation chamber 100. They remain closed during the inflation of the first simulation chamber 100, causing the pressure within the simulation water chamber to rise. During the test, the opening or closing of the second exhaust valves 150 is controlled to maintain the pressure within the first simulation chamber 100 at a set value during the test process.

[0097] Among them, the equivalent exhaust flow rate of the multiple second exhaust valves 150 needs to be greater than the gas production flow rate of the power chamber 300 generating incompressible fluid. The opening time and quantity of the second exhaust valves 150 are controlled through a pressure control algorithm (such as PID) to achieve the purpose of quickly discharging gas to reduce pressure. When the pressure drops to the set value, it is quickly closed, so that the pressure is maintained within a small range near the test set value, ensuring the accuracy of the test pressure.

[0098] As an example, controlling the opening time and quantity of the second exhaust valves 150 through a pressure control algorithm (such as PID) includes the following steps.

[0099] First, clarify the target pressure value, which is the core reference for the entire control process. Then, through multiple tests and data analysis, determine the proportional coefficient (P), integral coefficient (I), and derivative coefficient (D) of the PID algorithm.

[0100] Furthermore, use the difference between the liquid level difference and the flow meter as the proportional coefficient. The proportional coefficient is mainly used to quickly respond to the pressure deviation, and its magnitude determines the intensity of the control action, thus reflecting the influence of the pressure deviation on the flow deviation.

[0101] Use the drainage flow rate of the volumetric flow meter as the integral coefficient. The integral coefficient is used to eliminate the steady-state error of the system. By integrating the pressure deviation over a past period of time and adjusting the control quantity, the interference of the change in the control quantity on the drainage flow rate can be reduced.

[0102] Use the valve response delay as the derivative coefficient. The derivative coefficient adjusts the control quantity in advance according to the rate of change of the pressure deviation, enhancing the stability and response speed of the system. It can reduce the response time for correcting the pressure deviation, thus helping to improve the accuracy of pressure control.

[0103] The operation process of this solution is briefly described below. Connect the pressure sensor and the second exhaust valve 150 to a controller (such as a PLC or a single-chip microcomputer). The pressure sensor is responsible for collecting the pressure data in the first simulation chamber 100 in real time and converting it into an electrical signal for transmission to the controller. The controller has a built-in PID algorithm program, which calculates the control quantity based on the received pressure signal.

[0104] The controller continuously reads the real-time pressure value transmitted by the pressure sensor and compares it with the preset target pressure value to determine the pressure deviation. Based on the pressure deviation, the PID algorithm starts to work, and determines the corresponding control output according to the preset proportional, integral, and differential coefficients. The control output includes the opening time and quantity of the second exhaust valve 150.

[0105] In addition, if the current pressure is higher than the target pressure, the controller controls the opening of the second exhaust valve 150 according to the calculation result, releases the gas in the chamber by adjusting the opening time and quantity, and reduces the pressure; if the pressure is lower than the target pressure, the opening time of the exhaust valve is reduced or some exhaust valves are closed. During the control process, it also includes continuously and automatically adjusting the control quantity according to the real-time pressure deviation and deviation change rate to ensure that the pressure is always stable near the target value.

[0106] The embodiment of this application also discloses a method for eliminating test errors. Further, determining the pressure deviation includes:

[0107] Determine the dynamic error of the volume flowmeter, the liquid level difference, and the system error and environmental error of the flowmeter, correct the pressure deviation through the residual compensation algorithm, realize the correction of the input quantity of the fuzzy control (PID), compensate for the pipeline flow resistance loss and valve response delay, and further improve the response rate and control accuracy of the fuzzy control (PID).

[0108] The residual compensation algorithm includes generating the corresponding residual by subtracting the measured value from the theoretical value of each error, assigning respective compensation coefficients to each residual, forming a residual rank table according to the magnitude arrangement of historical residuals, determining the residual rank of the actual residual, and dynamically adjusting the compensation coefficients.

[0109] The dynamic adjustment includes determining the historical memory decay rate according to the change rate of the system response time at different time nodes, and multiplying the historical memory decay rate by the compensation coefficient to complete the dynamic adjustment of the compensation coefficient.

[0110] Correct the pressure deviation according to the compensation coefficient, thereby reducing the error in the test process.

[0111] In other embodiments, controlling the opening time and quantity of the second exhaust valve 150 through the pressure control algorithm also includes a double closed-loop control system, including establishing a nonlinear control model of pressure-equivalent exhaust gas flow, and determining the opening time and quantity of the second exhaust valve 150 with a double closed-loop control strategy.

[0112] Including, in response to a test instruction, during the test process, obtaining a pressure deviation as a first control parameter and a flow rate change rate as a second control parameter. The pressure deviation is the pressure deviation in the first chamber 110, and the flow rate change rate is the percentage change in the flow rate of the volumetric flowmeter. Generating a first control signal according to the first control parameter, controlling the opening time and quantity of the second exhaust valve 150 according to the first control signal, feeding back the second control parameter at this time to generate a second control signal, and using the second control signal to replace the first control signal for control.

[0113] The control process further includes, during the drainage test, controlling the on / off of the second exhaust valve 150 with the first control signal to obtain first-stage test data; obtaining the second control parameter to generate a second control signal, and controlling the on / off of the second exhaust valve 150 with the second control signal to obtain second-stage test data.

[0114] Obtaining the test result, including generating a verification range according to the first-stage test data. The verification range is an interval obtained by adding / subtracting the percentage of the pressure deviation in the pressure value multiplied by the first-stage test data to / from the first-stage test data. When the second-stage test data falls within the verification range, verifying that the second-stage test data is true and using it as the test result.

[0115] As an example, the equivalent exhaust flow rate refers to the discharge effect when multiple second exhaust valves 150 act together equivalently as one exhaust valve, which helps to ensure the accuracy of pressure control, reduce errors, and ensure the safety of the test.

[0116] As an example, the pressure control algorithm further includes a feedforward control part based on the equivalent exhaust flow rate. When it is detected that the equivalent exhaust flow rate has a tendency to rise rapidly, the valve opening is finely adjusted in advance to effectively suppress the excessive rise of the flow rate, successfully avoiding excessive impact and influence on other system parameters, and thus achieving a more refined and efficient control effect.

[0117] In some other embodiments, please refer to Figure 1 , a first pressure detection mechanism 160 for detecting the pressure in the first chamber 110 is provided on the first simulation chamber 100.

[0118] It can be understood that the first pressure detection mechanism 160 can monitor the pressure change in the first chamber 110 in real time, thereby facilitating the precise control of the test pressure conditions and helping to improve the accuracy and reliability of the test.

[0119] In some other embodiments, please refer to Figure 1 , a second isolation valve 320 is provided between the power chamber 300 and the second simulation chamber 200, and the second isolation valve 320 can selectively connect the first storage chamber 310 and the second chamber 210.

[0120] It is understandable that the first storage chamber 310 can be selectively communicated with the second chamber 210 through the second isolation valve 320, so as to control the flow of the medium in the first storage chamber 310 and the second chamber 210, making the communication between the power chamber 300 and the second simulation chamber 200 controllable, which helps to improve the test accuracy.

[0121] In some other embodiments, please refer to Figure 1 and Figure 2 , the test device for measuring the drainage capacity of compressible fluid further includes a total control unit 600, a first sub-control unit 610 and a second sub-control unit 620. It is understandable that the total control unit 600 can play a role in controlling the test device for measuring the drainage capacity of compressible fluid, and the first sub-control unit 610 and the second sub-control unit 620 can respectively play a role in controlling part of the test device for measuring the drainage capacity of compressible fluid.

[0122] As an example, the total control unit 600 is the core of the entire test device for measuring the drainage capacity of compressible fluid, responsible for receiving external instructions or operation requests, and sending control signals to each sub-control unit according to these instructions or requests, so as to realize the centralized management of the entire test device for measuring the drainage capacity of compressible fluid, and can play a role in centralized data, which helps to reduce the operation difficulty and improve the operation efficiency.

[0123] The first sub-control unit 610 and the second sub-control unit 620 are respectively responsible for specifically executing the control tasks of their respective connected devices, realizing decentralized control. Each sub-control unit only needs to focus on the devices it is responsible for, rather than dealing with the complex logic of the entire system, thus improving the response speed and stability of the system.

[0124] The total control unit 600 is respectively communicatively connected to the first sub-control unit 610 and the second sub-control unit 620, so that the first sub-control unit 610 and the second sub-control unit 620 can respectively communicate with the total control unit 600, thus realizing a high degree of automatic control.

[0125] As an example, the total control unit 600 can automatically send control instructions to each sub-control unit according to the preset test process or conditions, so as to realize the automatic monitoring and adjustment of the test process.

[0126] As an example, the total control unit 600 can be set as a host computer monitoring system. The host computer monitoring system refers to a computer or software system responsible for monitoring, managing and controlling the lower computer. Through the user interface (GUI), real-time data, alarm information and device status are displayed. The operator can monitor the operation of the device through the host computer interface and control the device and adjust parameters.

[0127] The upper-level monitoring system communicates with the lower-level machine through various communication protocols (such as Modbus, Ethernet / IP, etc.) to obtain real-time data such as sensor data, device status, and operating parameters.

[0128] The first sub-control unit 610 and the second sub-control unit 620 are set as the lower-level machine monitoring modules. The lower-level machine monitoring modules are suitable for being arranged in the lower-level machine monitoring system and transmitting real-time data such as sensor data, device parameters, and operating parameters through communication.

[0129] In this embodiment, the first sub-control unit 610 is communicatively connected to the second isolation valve 320 and the first exhaust valve 230. It can be understood that the first sub-control unit 610 can play a role in controlling the second isolation valve 320 and the first exhaust valve 230. The first sub-control unit 610 can be connected to the second isolation valve 320 and the first exhaust valve 230 through one of cables, network cables, WIFI, or Bluetooth. This application does not make any limitations in this regard.

[0130] Control signals are respectively sent to the second isolation valve 320 and the first exhaust valve 230 through the first sub-control unit 610, so as to drive the second isolation valve 320 and the first exhaust valve 230 to open and close respectively, thereby realizing automatic control and helping to improve the test efficiency.

[0131] The second sub-control unit 620 is communicatively connected to the first isolation valve 510, the first gas supply valve 140, and the second exhaust valve 150. It can be understood that the second sub-control unit 620 can play a role in controlling the first isolation valve 510, the first gas supply valve 140, and the second exhaust valve 150. The second sub-control unit 620 is respectively connected to the first isolation valve 510, the first gas supply valve 140, and the second exhaust valve 150 through cables, network cables, WIFI, or Bluetooth. This application does not make any limitations in this regard.

[0132] Control signals are respectively sent to the first isolation valve 510, the first gas supply valve 140, and the second exhaust valve 150 through the second sub-control unit 620, so as to respectively control the opening and closing of the first isolation valve 510, the first gas supply valve 140, and the second exhaust valve 150, and further realize automatic control.

[0133] In the above solution, the communication connection between the total control unit 600 and each sub-control unit can monitor the status of each sub-control unit and the corresponding device in real time, realize further automatic control, and help to improve the test accuracy.

[0134] As an example, the first isolation valve 510 and the second isolation valve 320 can be configured as electric valves, and the first air supply valve 140, the first exhaust valve 230, the second exhaust valve 150, and the first drain valve 220 can be configured as solenoid valves. A solenoid valve refers to a valve controlled by electromagnetic effect, mainly controlled by a relay for internal on / off.

[0135] As an example, an electric valve refers to a valve driven by an electric motor, which converts the high-speed rotational motion of the electric motor into a linear motion or rotational motion of the valve stem through a speed reduction mechanism, and then drives the valve core to act to control the opening and closing of the valve.

[0136] An electric valve is usually equipped with a control circuit and a position sensor, which can achieve precise control of the valve opening and position feedback.

[0137] In a specific embodiment, please refer to Figure 1 , the flow rate monitoring mechanism 400 is configured as a volumetric flowmeter. It can be understood that the volumetric flowmeter includes but is not limited to a lobed rotor flowmeter, a piston flowmeter, a scraper flowmeter, a diaphragm flowmeter, and a throttling flowmeter, and the present application does not limit this.

[0138] The first simulation chamber 100 is connected to a pressurization system. The pressurization system is connected to the first simulation chamber 100 through the first air supply valve 140, and the pressurization system is set as a system for providing high-pressure air.

[0139] A muffler is provided at the outlet of the second exhaust valve 150. The muffler is used to reduce the noise generated by the flow of high-pressure gas when the second exhaust valve 150 is working.

[0140] When the first simulation chamber 100 is in the test and the pressure needs to be adjusted, due to the relatively high pressure in the first simulation chamber 100, the second exhaust valve 150 is likely to generate strong exhaust noise during exhaust. The high-frequency sound waves contained in the exhaust noise may impact other test equipment, thereby causing vibration of other equipment, which in turn affects the test accuracy. By providing a muffler at the outlet of the second exhaust valve 150, the noise during the test is reduced, which helps to improve the test accuracy.

[0141] When the first simulation chamber 100 is in the test preparation stage and after the test, the muffler at the outlet of the second exhaust valve 150 can reduce the exhaust noise and reduce the impact of the noise on the test.

[0142] A second pressure detection mechanism for detecting the pressure in the second chamber 210 is provided on the second simulation chamber 200. Both the first pressure detection mechanism 160 and the second pressure detection mechanism can be configured as pressure gauges, and the pressure gauges are used to detect the pressure inside the first simulation chamber 100 or the second simulation chamber 200.

[0143] The second isolation valve 320 is set as a check valve. A check valve is a valve whose closing member is a circular valve disc and which blocks the reverse flow of the medium by its own weight and the action of the medium pressure, and can play a role of only allowing the medium to flow in one direction and preventing the reverse flow.

[0144] The check valve is used to prevent water or compressible fluid from flowing back into the power chamber 300, improving the reliability of the test device for measuring the drainage capacity of compressible fluid.

[0145] The first simulation chamber 100 is provided with a first liquid level gauge 170. The first liquid level gauge 170 is used to detect the liquid level height in the first chamber 110. The first liquid level gauge 170 is communicatively connected to the first sub-control unit 610, which helps to accurately monitor the change of the liquid level in the first chamber 110 during the test, so as to obtain more accurate test results.

[0146] The second simulation chamber 200 is provided with a second liquid level gauge 250. The second liquid level gauge 250 is used to detect the liquid level height in the second chamber 210. The second liquid level gauge 250 is communicatively connected to the first sub-control unit 610, which helps to accurately monitor the change of the liquid level in the second chamber 210 before and after the start of the test, so as to obtain more accurate test results.

[0147] The changes in the liquid levels of the first liquid level gauge 170 and the second liquid level gauge 250 can be compared, and the change amounts of the two before and after the test should tend to be consistent, so as to obtain more accurate drainage volume results.

[0148] That is to say, this solution can also determine the error in the test process by comparing the measurement results of the first liquid level gauge 170 and the second liquid level gauge 250, that is, by comparing the measurement results of the first liquid level gauge 170 and the second liquid level gauge 250, the measurement results of the flow monitoring mechanism 400 are corrected.

[0149] Both the first simulation chamber 100 and the second simulation chamber 200 are constructed as pressure-bearing chambers. The pressure-bearing capacity refers to the maximum pressure that the chamber can withstand without damage or deformation when subjected to internal pressure, such as a chamber with a pressure-bearing capacity of 4 MPa.

[0150] The first pipeline 500 is constructed as a pressure-bearing pipeline, such as a pipeline with a pressure-bearing capacity of 4 MPa.

[0151] Please refer to Figure 1 、 Figure 2 and Figure 3 , and the test process of the test device for measuring the drainage capacity of compressible fluid is briefly described below.

[0152] S1. Fill the second simulation chamber 200 with water. Close the first isolation valve 510, open the first drain valve 220 and the first exhaust valve 230, and fill the second simulation chamber 200 with water through the first drain valve 220. After observing water overflowing from the first exhaust valve 230, ensure that the second simulation chamber 200 is full of water, stop filling, and close the first drain valve 220 and the first exhaust valve 230.

[0153] S2. Fill the first simulation chamber 100 with water. Open the second drain port 120 and the second exhaust valve 150, observe the height of the liquid level gauge, and fill the first simulation chamber 100 with water through the second drain port 120. Stop filling when the liquid level has passed the highest point of the first pipeline 500, and close the second drain port 120 and the second exhaust valve 150.

[0154] S3. Pressurize the first simulation chamber 100. Open the first air supply valve 140, and introduce compressed air into the first simulation chamber 100 through an external pressurization system. As the pressure continuously rises, measure the pressure inside the first simulation chamber 100 through the first pressure detection mechanism 160 at the top of the first simulation chamber 100. Stop injecting compressed air when the first simulation chamber 100 meets the required pressure as monitored by the first sub-control unit 610.

[0155] S4. Open the first isolation valve 510 to connect the water in the second simulation chamber 200 and the first simulation chamber 100, making the pressures equal, and the test preparation is completed.

[0156] S5. During the test, a compressible fluid continuously enters the second simulation chamber 200, causing the pressure in the second simulation chamber 200 to rise. The water in the second simulation chamber 200 is pressed into the first simulation chamber 100 through the first pipeline 500 at the bottom, and the water level in the first simulation chamber 100 rises, compressing the upper gas and increasing the gas pressure. By controlling the opening or closing of the second exhaust valve 150, the simulated drainage pressure of the first simulation chamber 100 during the test can be controlled.

[0157] S6. Through the first liquid level gauge 170, the second liquid level gauge 250, and the flow monitoring mechanism 400, the total drainage volume, average drainage volume, and real-time drainage flow rate of the power chamber 300 under the set drainage pressure conditions can be obtained.

[0158] By conducting drainage tests after pressurizing the first simulation chamber 100 to different pressures, quantitative tests of the drainage capacity under different media and pressure conditions can be carried out on land to determine the drainage capacity for quantitative control in actual ship use.

[0159] In addition, when the control method in some other embodiments is applied to step S5 in this embodiment, the total control unit 600 acquires the acquisition data of the first sub-control unit 610 and the second sub-control unit 620, cyclically controls the second exhaust valve 150 according to the above control method, and sequentially controls the second exhaust valve 150 according to the above first control signal and second control signal. At the same time, the total control unit 600 processes the continuously acquired acquisition data according to the above method of reducing errors to achieve closed-loop feedback.

[0160] In a third aspect, an embodiment of the present application provides a system that can implement the method for reducing test errors in any of the above embodiments. The system includes a controller and a memory. The memory stores a program, and when the program is executed by the controller, it implements the method for reducing test errors in any of the above embodiments. Specifically, when the controller runs the program stored in the memory, the following steps can be implemented:

[0161] 1. In step S5, when it is detected that the equivalent exhaust flow rate has a tendency to rise rapidly, the valve opening is finely adjusted in advance to effectively suppress the excessive rise of the flow rate, successfully avoiding excessive impact and influence on other parameters of the system, and thus achieving a more refined and efficient control effect.

[0162] 2. In step S5, after the upper computer monitoring console acquires the data of the flowmeter and the liquid level gauge and the pressure data of the pressure detector, it determines the dynamic error of the volumetric flowmeter, the liquid level difference, and the system error and environmental error of the flowmeter;

[0163] The corresponding residual is generated by subtracting the measured value from the theoretical value of each error, and each residual is assigned its own compensation coefficient. According to the historical residuals arranged in order of magnitude, a residual level table is formed to determine the residual level of the actual residual and the corresponding compensation coefficient;

[0164] The historical memory decay rate is determined according to the change rate of the system response time at different time nodes, and the historical memory decay rate is multiplied by the compensation coefficient to complete dynamic adjustment;

[0165] The pressure deviation is corrected according to the compensation coefficient.

[0166] 3. Determine the PID coefficients of fuzzy control, use the difference between the liquid level difference and the flowmeter as the proportional coefficient. The proportional coefficient is mainly used to quickly respond to the pressure deviation, and its magnitude determines the intensity of the control action, thus reflecting the influence of the pressure deviation on the flow deviation.

[0167] Use the drainage flow rate of the volumetric flowmeter as the integral coefficient. The integral coefficient is used to eliminate the steady-state error of the system. By performing an integral operation on the pressure deviation over a past period of time and adjusting the control amount, the interference of the change in the control amount on the drainage flow rate can be reduced.

[0168] Taking the valve response delay as the differential coefficient, the differential coefficient adjusts the control amount in advance according to the change rate of the pressure deviation, enhancing the stability and response speed of the system, reducing the response time for correcting the pressure deviation, and thus contributing to improving the pressure control accuracy.

[0169] 4. Establish a non-linear control model of pressure-equivalent exhaust flow rate, and determine the opening time and quantity of the second exhaust valve 150 with a double closed-loop control strategy. This includes, in response to a test instruction, during the test process, obtaining the pressure deviation as the first control parameter and the flow rate change rate as the second control parameter. The pressure deviation is the pressure deviation in the simulated water tank, and the flow rate change rate is the percentage change in the flow rate of the volumetric flowmeter; generating a first control signal according to the first control parameter, controlling the opening time and quantity of the second exhaust valve 150 according to the first control signal, feeding back the second control parameter at this time to generate a second control signal, and using the second control signal to replace the first control signal for control, further reducing the flow error caused by the pressure error and generating a larger adjustment error according to the incorrect flow error, which affects the test process.

[0170] 5. The upper computer monitoring console sends the control result to the lower computer monitoring module, and the lower computer monitoring module controls the opening number and time of the second exhaust valve 150 according to the control result.

[0171] As an example, the present invention can be optimized using methods such as double closed-loop control, PID fuzzy control, neural network control, prediction models, machine learning models, etc., and this application does not list them one by one.

[0172] It should also be noted that the term "including", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or elements inherent to such process, method, commodity or device. Without further limitations, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, commodity or device including the said element.

[0173] Each embodiment in this specification is described in a progressive manner. The same or similar parts between each embodiment can be referred to each other, and the key points of each embodiment are the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can refer to the partial description of the method embodiment.

[0174] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

[0175] Although the embodiments of the present application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A test device for measuring the drainage capacity of a compressible fluid, characterized in that, Comprising: A first simulation chamber having a first chamber with high-pressure air therein, and a plurality of second exhaust valves are provided at the top of the first simulation chamber; A second simulation chamber having a second chamber filled with water, and the second chamber is selectively communicated with the first chamber through a first pipeline; A power chamber with a first storage chamber for storing compressible fluid provided therein, and the first storage chamber is selectively communicated with the second chamber; A flow rate monitoring mechanism is provided on the first pipeline, and the flow rate monitoring mechanism is adapted to detect the amount of water flowing from the second chamber into the first chamber when the compressible fluid in the first storage chamber continuously enters the second chamber; The pressure of the first simulation chamber is adjustable, and the method for adjusting the pressure of the first simulation chamber includes: collecting the pressure data in the first simulation chamber through a pressure sensor, comparing it with a preset target pressure value, and determining the pressure deviation; Taking the pressure deviation as a first control parameter and the flow rate change rate as a second control parameter, and the flow rate change rate is the percentage change in the flow rate of the flow rate monitoring mechanism; Generating a first control signal according to the first control parameter, controlling the opening time and quantity of the second exhaust valve according to the first control signal, feeding back the second control parameter at this time to generate a second control signal, and using the second control signal to replace the first control signal for control.

2. The test device for measuring the drainage capacity of a compressible fluid according to claim 1, characterized in that, The first pipeline is connected to the bottom of the first simulation chamber and the bottom of the second simulation chamber.

3. The test device for measuring the drainage capacity of a compressible fluid according to claim 2, wherein, When the second chamber is filled with water and the first chamber is not communicated with the second chamber, water is stored in the first chamber, and the water level height in the first chamber is not lower than the height of the first pipeline.

4. The test device for measuring the drainage capacity of a compressible fluid according to claim 1, characterized in that, The compressible fluid includes at least one of carbon dioxide, nitrogen, and air.

5. The test device for measuring the drainage capacity of a compressible fluid according to claim 1, characterized in that, A first drain valve is provided at the bottom of the second simulation chamber, and a first exhaust valve is provided at the top of the second simulation chamber. Both the first drain valve and the first exhaust valve are selectively communicated with the second chamber.

6. The test device for measuring the drainage capacity of a compressible fluid according to claim 5, characterized in that, A first overflow port is further provided at the top of the second simulation chamber, and the first overflow port is selectively communicated with the second chamber.

7. The test device for measuring the drainage capacity of a compressible fluid according to claim 6, characterized in that, The first exhaust valve is configured as the first overflow port.

8. The test device for measuring the drainage capacity of a compressible fluid according to claim 6, characterized in that, A first isolation valve is provided on the first pipeline, and a second drain port is provided at the bottom of the first simulation chamber. The second drain port is selectively communicated with the first chamber.

9. The test device for measuring the drainage capacity of a compressible fluid according to claim 8, characterized in that, A first air supply valve is provided at the top of the first simulation chamber, and the first air supply valve is selectively communicated with the first chamber.

10. The test device for measuring the drainage capacity of a compressible fluid according to claim 9, characterized in that, A first pressure detection mechanism for detecting the pressure in the first chamber is provided on the first simulation chamber.

11. The test device for measuring the drainage capacity of a compressible fluid according to claim 10, characterized in that, A second isolation valve is provided between the power chamber and the second simulation chamber, and the second isolation valve selectively communicates the first storage chamber with the second chamber.

12. The test device for measuring the drainage capacity of a compressible fluid according to claim 11, characterized in that, The test device for measuring the drainage capacity of the compressible fluid further includes a total control unit, a first sub-control unit, and a second sub-control unit. The total control unit is communicatively connected to the first sub-control unit and the second sub-control unit respectively; The first sub-control unit is communicatively connected to the second isolation valve and the first exhaust valve, and the second sub-control unit is communicatively connected to the first isolation valve, the first gas supply valve, and the second exhaust valve.

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