Test equipment and test system

Abstract

The embodiment of the utility model provides test equipment and a test system, and the equipment comprises a housing which is provided with a first connector, a second connector, and a third connector. The partition plate is connected with the shell, the interior of the shell is divided into a first cavity and a second cavity by the partition plate, a first mounting hole is formed in the partition plate, and the first cavity and the second cavity are communicated through the first mounting hole; the first mounting hole is used for mounting an anti-explosion valve; the detection end of the detector is arranged in the first cavity, and the detector is used for detecting the flow velocity and the static pressure of the liquid in the first cavity; the first connector and the third connector communicate with the first cavity, the first connector is used for allowing liquid to flow into the first cavity, and the third connector is used for allowing the liquid to flow out of the first cavity; and the second joint is communicated with the second cavity and is used for introducing gas into the second cavity.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of battery testing, and particularly relates to a testing device and a testing system. BACKGROUND

[0002] When a new energy vehicle is wading, the explosion-proof valve on the battery pack will usually be immersed in water at the same time. At this time, affected by the flow rate of the accumulated water relative to the explosion-proof valve, the static pressure on the side of the explosion-proof valve located in the water will be less than the static pressure on the side located inside the battery pack. The difference in static pressure on both sides of the explosion-proof valve is easy to cause the explosion-proof valve to be broken by the gas inside the battery pack, so that the accumulated water enters the battery pack and threatens the insulation performance of the battery pack. There is a lack of testing equipment for the opening pressure value of the explosion-proof valve when wading in the prior art. CONTENT OF THE UTILITY MODEL

[0003] In view of the above problems, the utility model is proposed to provide a testing device and a testing system which can overcome the above problems or at least partially solve the above problems.

[0004] In order to solve the above technical problems, the application is implemented as follows:

[0005] In a first aspect, the embodiments of the application propose a testing device, and the testing device comprises:

[0006] A shell, the shell has a first joint, a second joint and a third joint;

[0007] A partition plate, the partition plate is connected with the shell, the partition plate divides the shell into a first cavity and a second cavity, a first mounting hole is arranged on the partition plate, the first mounting hole is in communication with the first cavity and the second cavity; the first mounting hole is used for mounting an explosion-proof valve;

[0008] A detector, a detection end of the detector is arranged in the first cavity, and the detector is used for detecting the flow rate and the static pressure of the liquid in the first cavity;

[0009] The first joint and the third joint are in communication with the first cavity, the first joint is used for flowing the liquid into the first cavity, and the third joint is used for flowing the liquid out of the first cavity; the second joint is in communication with the second cavity, and the second joint is used for introducing the gas into the second cavity.

[0010] Optionally, the partition plate has a boss, and the first mounting hole is located on the boss; when the explosion-proof valve is mounted in the first mounting hole, the boss is located on the surface of the first cavity and is flush with the surface of the explosion-proof valve located in the first cavity.

[0011] Optionally, the distance between the surface of the boss facing the first cavity and the inner wall surface of the first connector closest to the boss is A, 0mm≤A≤10mm.

[0012] Optionally, the test equipment includes a first mounting component;

[0013] The first mounting component is installed in the first mounting hole; the first mounting component has a second mounting hole for connecting with the explosion-proof valve; when the explosion-proof valve is installed in the first mounting component, the first mounting component is located on the surface of the first cavity and is flush with the surface of the explosion-proof valve in the first cavity.

[0014] Optionally, along a first direction, the first connector and the third connector are disposed opposite each other; the first direction is parallel to the surface of the partition located in the first cavity.

[0015] Optionally, the first connector includes a first part and a second part;

[0016] The first part is used to communicate with an external pipe, the first end of the second part is connected to the first part, and the second end of the second part is connected to the first cavity;

[0017] Along the second direction, the inner diameter of the second part is not less than the inner diameter of the first part and the maximum size of the valve cover of the explosion-proof valve. The second direction is parallel to the surface of the partition located in the first cavity, and the first direction intersects with the second direction.

[0018] The third connector has the same external dimensions as the first connector.

[0019] Optionally, the testing device further includes a liquid accumulator, which is connected to the first cavity.

[0020] Optionally, the detector is disposed on the side of the first mounting hole facing the third connector.

[0021] Optionally, the housing includes a first housing and a second housing, which are respectively sealed to opposite sides of the partition.

[0022] Secondly, embodiments of this application propose a testing system, which includes any of the testing devices described above.

[0023] Optionally, the testing system further includes a water pump and a throttle valve;

[0024] The output port of the water pump is connected to the input port of the throttle valve, the input port of the throttle valve is connected to the first connector, and the input port of the water pump is connected to the third connector.

[0025] Optionally, the test system further comprises a controller;

[0026] The controller is electrically connected with the detector, the water pump and the throttle valve respectively, and the controller is configured to receive the flow rate data and the static pressure data detected by the detector, and adjust the power of the water pump and the opening degree of the throttle valve according to the flow rate data and the static pressure data.

[0027] In the embodiment of the application, the test device comprises a shell, a partition plate and a detector. The partition plate divides the shell into a first cavity and a second cavity. The partition plate has a first mounting hole communicating the first cavity and the second cavity, and the first mounting hole is used for mounting an explosion-proof valve. A first connector and a third connector of the shell communicate with the first cavity to respectively allow liquid to flow into and out of the first cavity. A second connector of the shell communicates with the second cavity to allow gas to flow into the second cavity. A detection end of the detector is arranged in the first cavity and is used for detecting the flow rate and the static pressure of the liquid in the first cavity.

[0028] The explosion-proof valve is mounted on the partition plate, one side of which is located in the first cavity and bears the pressure brought by the liquid flow. The other side is located in the second cavity and bears the pressure brought by the gas. The first cavity and the second cavity can simulate the environment in which the explosion-proof valve is located when the vehicle is wading. The detector can detect the relevant data of the liquid when the explosion-proof valve is opened due to the difference in static pressure on both sides.

[0029] Additional aspects and advantages of the present application will be described in the following description and part of them will become apparent from the description or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0030] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description that follows, including the appended drawings, in which:

[0031] Figure 1 is an isometric view of the test device described in the embodiment of the application;

[0032] Figure 2 is an exploded view of Figure 1 ;

[0033] Figure 3 is a sectional view of Figure 2 ;

[0034] Figure 4 is a local enlarged view of part A in Figure 3 ;

[0035] Figure 5 is a local enlarged view of part B in Figure 3 ;

[0036] Figure 6 is a structural schematic diagram of the test system described in the embodiments of the present application;

[0037] Fig. 1 is a test device; 11 is a housing; 11a is a first cavity; 11b is a second cavity; 111 is a first joint; 111a is a first part; 111b is a second part; 112 is a second joint; 113 is a third joint; 114 is a first housing; 115 is a second housing; 12 is a partition; 121 is a first mounting hole; 122 is a boss; 13 is a detector; 14 is a first mounting member; 141 is a second mounting hole; 15 is an accumulator; 16 is a second mounting member; 17 is a fastener; 18 is a sealing ring; 2 is a water pump; 3 is a throttle valve; 4 is a controller; 5 is an air source; 6 is an explosion-proof valve. DETAILED DESCRIPTION

[0038] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0039] The terms "first", "second" in the description and claims of the present application can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in a "or" relationship.

[0040] In the description of the present application, it is understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0041] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the terms "mounting", "connection" should be understood in a broad sense, for example, it can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0042] The safety performance requirement of the existing new energy vehicle to the battery pack is higher and higher. With the improvement of the energy density of the battery pack, the probability of thermal runaway of the battery pack also increases. When the battery pack is in thermal runaway, the battery cell will spray a large amount of high-temperature combustible gas. This will cause the temperature and pressure inside the battery pack to rise sharply. In order to avoid this situation, an explosion-proof valve is generally arranged on the box wall of the battery pack. The explosion-proof valve can be opened when the pressure difference between the inside and outside of the battery pack reaches a certain threshold, so that the high-temperature and high-pressure gas in the battery pack can be discharged to the outside environment in time.

[0043] However, if the water level of the new energy vehicle is higher than the explosion-proof valve when it is wading, the explosion-proof valve has a certain risk of being opened by mistake. Because the movement of the vehicle will cause relative movement between the explosion-proof valve and the water. When the flow rate of the water relative to the explosion-proof valve reaches a certain degree, the gas pressure in the battery pack will be higher than the pressure outside the explosion-proof valve, which will cause the explosion-proof valve to be opened by mistake. The explosion-proof valve opened by mistake will cause water to enter the battery pack, which will cause irreversible damage to the insulation protection inside the battery pack.

[0044] The prior art lacks a test device 1 for simulating the abnormal opening of the battery explosion-proof valve of the electric vehicle under the wading condition. In order to fill this gap, the embodiment of the present application proposes a test device 1.

[0045] Referring to Figure 1 The test device 1 described in the embodiment of the present application comprises a shell 11, a partition plate 12 and a detector 13. The shell 11 has a closed inner cavity. The partition plate 12 is installed on the shell 11 and divides the inner cavity of the shell 11 into a first cavity 11a and a second cavity 11b. The partition plate 12 has a first mounting hole 121, which communicates the first cavity 11a and the second cavity 11b. During testing, the explosion-proof valve 6 is sealingly installed in the first mounting hole 121. At this time, one side of the explosion-proof valve 6 is located in the first cavity 11a, and the other side is located in the second cavity 11b.

[0046] Referring to Figure 1The shell 11 has a first joint 111, a second joint 112 and a third joint 113. The first joint 111 and the third joint 113 are both in communication with the first cavity 11a. The first joint 111 can be used for liquid to flow into the first cavity 11a, and the third joint 113 can be used for liquid to flow out of the first cavity 11a. The second joint 112 is in communication with the second cavity 11b and is used for gas to flow into the second cavity 11b.

[0047] During testing, a certain pressure of gas can be introduced into the second cavity 11b through the second joint 112, i.e. the second joint 112 is connected to the gas source 5, to simulate the gas environment in the battery pack. Water is supplied into the first cavity 11a through the first joint 111, and water is discharged from the first cavity 11a through the third joint 113, so that a water flow is formed in the first cavity 11a to simulate the liquid environment in which the explosion-proof valve 6 is located when the vehicle is driving through water.

[0048] The detector 13 can be mounted on the partition plate 12 or on the shell 11. The detection end of the detector 13 extends into the first cavity 11a and detects the flow rate and static pressure of the liquid in the first cavity 11a. When the explosion-proof valve 6 is opened due to the pressure difference between the two sides, the technician collects the values of the flow rate and static pressure of the liquid in the first cavity 11a read by the detector 13.

[0049] The detection device described in the present application can well simulate the working condition of the explosion-proof valve 6 in the water environment and capture the key parameters that cause the explosion-proof valve 6 to be mistakenly opened, thereby filling the gap in the prior art in simulating the abnormal opening of the battery explosion-proof valve 6 under the water driving condition of the electric vehicle. This provides good data reference for the design of the explosion-proof valve 6 and the design of the battery pack, and is conducive to further improving the waterproof capability of the battery pack and the vehicle when driving through water.

[0050] Reference Figure 2 In some embodiments of the present application, the partition plate 12 has a boss 122. In other words, the thickness of a part of the partition plate 12 is greater than that of other parts, so that this part is more prominent than other parts. The first mounting hole 121 is located at the boss 122, and the specific position of the first mounting hole 121 on the boss 122 can be specifically set according to actual needs. When the explosion-proof valve 6 is mounted in the first mounting hole 121, the boss 122 is located on the surface of the first cavity 11a and is flush with the explosion-proof valve 6 located on the surface of the first cavity 11a. This can ensure the smoothness of the water flow passing through the explosion-proof valve 6 and prevent the existence of height difference between the surface of the boss 122 and the explosion-proof valve 6 from disturbing the water flow passing through the explosion-proof valve 6. The boss 122 can make the explosion-proof valve 6 closer to the first joint 111 and the third joint 112, so as to reduce the impact of the water flow flowing out of the first joint 111 on the explosion-proof valve. This can ensure the accuracy of the data and prevent the water flow disturbance and water flow impact from affecting the experimental data.

[0051] refer to Figure 4 In some embodiments of this application, the distance A between the surface of the boss 122 facing the first cavity 11a and the inner wall surface of the first connector 111 closest to the boss 122 is 0 mm. The minimum distance A can be 0 mm, meaning the surface of the boss 122 facing the first cavity 11a is flush with the inner wall surface of the first connector 111 closest to the boss 122. In this case, the water flowing out of the first connector 111 will not impact the explosion-proof valve 6. The maximum distance A can be 10 mm, meaning the surface of the boss 122 facing the first cavity 11a is 10 mm lower than the inner wall surface of the first connector 111 closest to the boss 122. Within this range, the impact of the water flowing out of the first connector 111 on the explosion-proof valve 6 is relatively small, and the impact on the test data is also relatively small.

[0052] refer to Figure 2 In some embodiments of this application, the testing device 1 specifically includes a first mounting member 14. The first mounting member 14 is installed in a first mounting hole 121. A second mounting hole 141 is provided on the first mounting member 14, and during testing, the explosion-proof valve 6 is installed in the second mounting hole 141. When the explosion-proof valve 6 is installed on the first mounting member 14, the first mounting member 14 is located on the surface of the first cavity 11a and is flush with the surface of the explosion-proof valve 6 in the first cavity 11a. This ensures the stability of the water flow through the explosion-proof valve 6 and prevents a height difference between the surface of the first mounting member 14 and the explosion-proof valve 6 from disturbing the water flow through the explosion-proof valve 6. This ensures the accuracy of the data and prevents water flow disturbance from affecting the experimental data.

[0053] refer to Figure 2 and Figure 4 Specifically, in this application, the first mounting component 14 has a flange for fixing to the partition 12 by fasteners 17. A sealing groove is provided on the side of the flange facing the partition 12, and a sealing ring 18 is provided within the sealing groove to achieve a seal between the first mounting component 14 and the partition 12. The first mounting component 14 has a recessed structure, and the explosion-proof valve 6 is mounted within the recessed structure by fasteners 17. Sealing rings 18 are provided between the valve body base of the explosion-proof valve 6 and the first mounting component 14, and between the valve body base of the explosion-proof valve 6 and the valve cover, to achieve a seal. The dimensions of the first mounting component 14 can be specifically set according to the applicable explosion-proof valve 6. By replacing the first mounting component 14, the test equipment 1 can be adapted to different types and specifications of explosion-proof valves.

[0054] refer to Figure 3 In some embodiments of this application, the first connector 111 and the third connector 113 are disposed opposite each other along a first direction. The first direction is... Figure 3The X direction is shown. Preferably, the first connector 111 and the third connector 113 are directly opposite each other in the first direction. The first direction is one of the directions parallel to the surface of the partition 12 located in the first cavity 11a. This ensures a stable and uniform water flow in the first cavity 11a and prevents disturbance of the water flow due to misalignment of the first connector 111 and the third connector 113.

[0055] refer to Figure 3 In some embodiments of this application, the first connector 111 includes a first portion 111a and a second portion 111b. The first portion 111a is used to communicate with an external pipe. For ease of connection, the cross-sectional shape of the first portion 111a can be a circular pipe, so that the first connector 111 can be connected to the external pipe.

[0056] The first end of the second part 111b is connected to the first part 111a, and the second end of the second part 111b is connected to the first cavity 11a. Along the second direction, the inner diameter of the second part 111b is not less than the inner diameter of the first part 111a and the maximum size of the valve cover of the explosion-proof valve 6. The inner diameter of the second part 111b is the maximum size of its internal channel in the second direction, and the inner diameter of the first part 111a is the maximum size of its internal channel in the second direction. The cross-sectional shape of the second part 111b can be a rectangular tube or a racetrack-shaped tube. When the cross-sectional shape of the first part 111a is a circular tube, the center of the cross-section of the first part 111a is preferably aligned with the center point of the cross-section of the second part 111b. The fact that the inner diameter of the second part 111b is not less than the inner diameter of the first part 111a in the second direction can disperse the water flow from the first part 111a, thereby ensuring that the water flow from the first connector 111 into the first cavity 11a is as smooth and uniform as possible. The inner diameter of the second part 111b is not less than the maximum size of the valve cover of the explosion-proof valve 6, which helps to ensure that the water flows smoothly and evenly through the explosion-proof valve 6, thereby avoiding interference from water flow disturbances on the detection data. The second direction is also parallel to the surface of the partition 12 located in the first cavity 11a. (Reference) Figure 1 The second direction is Figure 1 The Y direction is shown. The first direction and the second direction can be either intersecting or orthogonal, meaning they are two different directions that are coplanar. In this embodiment, the first direction is preferably orthogonal to the second direction. The third connector 113 has the same external dimensions as the first connector 111.

[0057] refer to Figure 6 In some embodiments of this application, the test device 1 further includes a liquid accumulator 15. The liquid accumulator 15 is connected to the first cavity 11a, and the liquid level in the liquid accumulator 15 is connected to atmospheric pressure. During testing, by changing the liquid level in the liquid accumulator 15, the test device 1 can simulate the opening of the explosion-proof valve 6 under various water depth conditions.

[0058] In some embodiments of the present application, the detector 13 is arranged on the side of the first mounting hole 121 facing the third joint 113. In other words, during testing, the detector 13 is located downstream of the explosion-proof valve 6. In this way, the detector 13 can avoid disturbing the water flow, thereby affecting the accuracy of the experimental data.

[0059] In the embodiments of the present application, the detector 13 preferably adopts a Pitot tube. The tube head of the Pitot tube is arranged towards the first joint 111 to measure the total water pressure of the water flow and the surrounding static pressure. According to the total water pressure and the static pressure of the water flow, the flow rate of the water flow in the first cavity 11a can be calculated.

[0060] Reference Figure 4 During installation, the third mounting hole can be arranged on the partition plate 12, the detector 13 is arranged in the second mounting member 16, and the second mounting member 16 is sealingly arranged in the third mounting hole of the partition plate 12. The second mounting member 16 can be in a cylindrical shape, one end of which is provided with a protruding edge, and the other end is provided with a threaded structure. The detector 13 is inserted into the cylindrical cavity of the second mounting member 16, and the two are fixed and sealed by a sealing glue or welding. Both ends of the third mounting hole have a groove structure, and the protruding edge of the second mounting member 16 is arranged between the groove structures located in the first cavity 11a. A sealing ring 18 is arranged between the two groove structures, and a nut is arranged in the other groove structure. The nut is threadedly connected with the second mounting member 16 to press the sealing ring 18 between the second mounting member 16 and the groove structure.

[0061] In some embodiments of the present application, the shell 11 specifically includes a first shell 114 and a second shell 115. The first shell 114 and the second shell 115 are sealingly connected to opposite sides of the partition plate 12, respectively. The first shell 114 and the partition plate 12 form the first cavity 11a, and the first shell 114 and the partition plate 12 can be sealingly connected by welding, gluing or the like. The first joint 111 and the third joint 113 are arranged on the first shell 114. The second shell 115 and the partition plate 12 form the second cavity 11b, and the second joint 112 is arranged on the second shell 115. The second shell 115 and the partition plate 12 can be fixedly connected by the fastener 17 and sealingly connected by the sealing ring 18. The shell 11 is made into the above split structure, which is beneficial to the disassembly and replacement of the explosion-proof valve 6, and is also beneficial to reducing the processing difficulty of the shell 11.

[0062] In a second aspect, the embodiments of the present application provide a test system, which comprises any one of the test devices 1 described above. The test system described in the present application can simulate the working condition of the explosion-proof valve 6 when the vehicle is in water, and capture the key parameters that cause the explosion-proof valve 6 to be mistakenly opened, thereby filling the gap in the prior art in simulating the abnormal opening of the battery explosion-proof valve 6 under the water condition of the electric vehicle. This provides good data reference for the design of the explosion-proof valve 6 and the design of the battery pack, and is conducive to further improving the waterproof capability of the battery pack and the vehicle when in water.

[0063] Reference Figure 6 In some embodiments of the present application, the test system further comprises a water pump 2 and a throttle valve 3. The output port of the water pump 2 is in communication with the input port of the throttle valve 3, the input port of the throttle valve 3 is in communication with the first joint 111, and the input port of the water pump 2 is in communication with the third joint 113. The water pump 2, the throttle valve 3 and the first cavity 11a form a circulating water path. By adjusting the power of the water pump 2, the flow rate of the liquid in the circulating water path can be adjusted. By adjusting the opening degree of the throttle valve 3, the flow rate and pressure of the liquid in the water path can be adjusted. In other words, the test system in the embodiments of the present application controls the flow rate and static pressure of the liquid in the circulating water path by adjusting the water pump 2 and the throttle valve 3. In this way, on the one hand, the influence of liquids with various flow rates and static pressures on the explosion-proof valve 6 can be simulated, and on the other hand, the flow rate and static pressure of the liquid environment when the explosion-proof valve 6 is opened can be tested.

[0064] Reference Figure 6 In some embodiments of the present application, the test system further comprises a controller 4. The controller 4 is electrically connected with the detector 13, the water pump 2 and the throttle valve 3 respectively. During testing, the controller 4 can receive the flow rate data and static pressure data detected by the detector 13, and adjust the power of the water pump 2 and the opening degree of the throttle valve 3 according to the flow rate data and the static pressure data. In this way, the liquid environment in the first cavity 11a of the test device 1 can be ensured to be always within the required range, thereby being conducive to ensuring the accuracy of the test experimental data.

[0065] The test device 1 comprises a housing 11, a partition plate 12 and a detector 13. The housing 11 has a closed inner cavity. The partition plate 12 is installed on the housing 11 and divides the inner cavity of the housing 11 into a first cavity 11a and a second cavity 11b. The partition plate 12 has a first mounting hole 121 which communicates the first cavity 11a and the second cavity 11b. In the test, the explosion-proof valve 6 is sealingly installed in the first mounting hole 121. At this time, one side of the explosion-proof valve 6 is located in the first cavity 11a and the other side is located in the second cavity 11b. The housing 11 has a first joint 111, a second joint 112 and a third joint 113. The first joint 111 and the third joint 113 both communicate with the first cavity 11a. The first joint 111 can supply liquid into the first cavity 11a and the third joint 113 can discharge liquid from the first cavity 11a. The second joint 112 communicates with the second cavity 11b and is used to supply gas into the second cavity 11b. The detection end of the detector 13 extends into the first cavity 11a and detects the flow rate and static pressure of the liquid in the first cavity 11a. When the explosion-proof valve 6 is opened due to the pressure difference between the two sides, the technician collects the values of the flow rate, static pressure and the like of the liquid in the first cavity 11a read by the detector 13.

[0066] In the test, a certain pressure gas can be supplied into the second cavity 11b through the second joint 112, that is, the second joint 112 is connected with the gas source 5, to simulate the gas environment in the battery pack. Water is supplied into the first cavity 11a through the first joint 111 and discharged from the first cavity 11a through the third joint 113, so that water flow is formed in the first cavity 11a to simulate the liquid environment in which the explosion-proof valve 6 is located when the vehicle is wading.

[0067] The partition plate 12 has a boss 122. This part of the area is more prominent than other areas. The aforementioned first mounting hole 121 is located at the boss 122 and the specific position of the first mounting hole 121 on the boss 122 can be set according to actual needs. When the explosion-proof valve 6 is installed in the first mounting hole 121, the boss 122 is located on the surface of the first cavity 11a and is flush with the explosion-proof valve 6 located on the surface of the first cavity 11a. In this way, the stability of the water flow passing through the explosion-proof valve 6 can be ensured, and the height difference between the surface of the boss 122 and the explosion-proof valve 6 is prevented from disturbing the water flow passing through the explosion-proof valve 6. The boss 122 can make the explosion-proof valve 6 closer to the first joint 111 and the third joint 112, so as to reduce the impact of the water flow discharged from the first joint 111 on the explosion-proof valve. In this way, the accuracy of the data can be ensured and the influence of water flow disturbance on the experimental data can be prevented.

[0068] Reference Figure 4The distance between the surface of the boss 122 facing the first cavity 11a and the inner wall surface of the first joint 111 closest to the boss 122 is A. The distance A can be as small as 0 mm, i.e. the surface of the boss 122 facing the first cavity 11a is flush with the inner wall surface of the first joint 111 closest to the boss 122. In this case, the water flow from the first joint 111 will not impact the explosion-proof valve 6. The distance A can also be as large as 10 mm, i.e. the surface of the boss 122 facing the first cavity 11a is 10 mm lower than the inner wall surface of the first joint 111 closest to the boss 122. In this range, the water flow from the first joint 111 has less impact on the explosion-proof valve 6, and the impact on the test data is less.

[0069] With reference to Figure 2 The test device 1 specifically comprises a first mounting member 14. The first mounting member 14 is mounted in the first mounting hole 121. The first mounting member 14 is provided with a second mounting hole 141. During testing, the explosion-proof valve 6 is mounted in the second mounting hole 141. When the explosion-proof valve 6 is mounted on the first mounting member 14, the first mounting member 14 is flush with the surface of the first cavity 11a on which the explosion-proof valve 6 is located. This can ensure the stability of the water flow through the explosion-proof valve 6, and prevent the first mounting member 14 from disturbing the water flow through the explosion-proof valve 6 due to the height difference between the first mounting member 14 and the explosion-proof valve 6. This can ensure the accuracy of the data and prevent the water flow from affecting the experimental data.

[0070] With reference to Figure 3 In the first direction, the first joint 111 is opposite to the third joint 113. The first direction is one of the directions parallel to the surface of the first cavity 11a on which the partition 12 is located, Figure 3The first direction is represented by the X direction. In this way, a stable and uniform water flow can be ensured in the first cavity 11a, and disturbance of the water flow caused by misalignment of the first joint 111 and the third joint 113 can be prevented. The first joint 111 includes a first portion 111a and a second portion 111b. The first portion 111a is configured to communicate with an external pipeline. In order to facilitate connection, the first portion 111a can have a circular cross-sectional shape, so that the first joint 111 can be connected to the external pipeline. The second portion 111b has a first end in communication with the first portion 111a and a second end in communication with the first cavity 11a. In the second direction, the inner diameter of the second portion 111b is greater than the inner diameter of the first portion 111a and the maximum size of the valve cover of the explosion-proof valve 6. The inner diameter of the second portion 111b is the maximum size of the internal passage of the second portion 111b in the second direction, and the inner diameter of the first portion 111a is the maximum size of the internal passage of the first portion 111a in the second direction. The cross-sectional shape of the second portion 111b can be a rectangular tube or a racetrack-shaped tube. When the cross-sectional shape of the first portion 111a is a circle, the center of the cross-section of the first portion 111a is preferably aligned with the center point of the cross-section of the second portion 111b. In the second direction, the inner diameter of the second portion 111b is not less than the inner diameter of the first portion 111a, which can disperse the water flow from the first portion 111a, thereby ensuring that the water flow from the first joint 111 into the first cavity 11a is as smooth and uniform as possible. The inner diameter of the second portion 111b is not less than the maximum size of the valve cover of the explosion-proof valve 6, which is conducive to the smooth and uniform flow of water through the explosion-proof valve 6, thereby avoiding disturbance of the water flow to the detection data. The second direction is also a direction parallel to the surface of the partition 12 in the first cavity 11a. Referring to Figure 1 , the second direction is the Y direction in Figure 1 . The first direction and the second direction can be generally intersecting or orthogonal, i.e., the first direction and the second direction are two different directions coplanar. In the present embodiment, the first direction is preferably orthogonal to the second direction. The third joint 113 has the same size as the first joint 111.

[0071] The test device 1 further includes a liquid reservoir 15. The liquid reservoir 15 is in communication with the first cavity 11a, and the liquid level in the liquid reservoir 15 is in communication with the atmospheric pressure. During testing, by changing the liquid level in the liquid reservoir 15, the test device 1 can simulate the opening of the explosion-proof valve 6 under various water depths. The detector 13 is disposed on the side of the first mounting hole 121 facing the third joint 113. In other words, during testing, the detector 13 is located downstream of the explosion-proof valve 6. In this way, disturbance of the water flow by the detector 13 can be avoided, thereby affecting the accuracy of the experimental data.

[0072] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0073] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A testing device, characterized in that, include: The housing (11) has a first connector (111), a second connector (112) and a third connector (113). A partition (12) is connected to the housing (11). The partition (12) divides the interior of the housing (11) into a first cavity (11a) and a second cavity (11b). A first mounting hole (121) is provided on the partition (12), which connects the first cavity (11a) and the second cavity (11b). The first mounting hole (121) is used to install an explosion-proof valve (6). The detector (13) has its detection end located inside the first cavity (11a) and is used to detect the flow rate and static pressure of the liquid inside the first cavity (11a). Both the first connector (111) and the third connector (113) are connected to the first cavity (11a). The first connector (111) is used to allow liquid to flow into the first cavity (11a), and the third connector (113) is used to allow the liquid to flow out of the first cavity (11a). The second connector (112) is connected to the second cavity (11b), and the second connector (112) is used to introduce gas into the second cavity (11b).

2. The testing equipment according to claim 1, characterized in that, The partition (12) has a boss (122), and the first mounting hole (121) is located on the boss (122); when the explosion-proof valve (6) is installed in the first mounting hole (121), the boss (122) is located on the surface of the first cavity (11a) and is flush with the surface of the explosion-proof valve (6) located in the first cavity (11a).

3. The testing equipment according to claim 2, characterized in that, The distance between the surface of the boss (122) facing the first cavity (11a) and the inner wall surface of the first connector (111) closest to the boss (122) is A, 0mm≤A≤10mm.

4. The testing equipment according to claim 1, characterized in that, The test equipment includes a first mounting component (14); The first mounting member (14) is installed in the first mounting hole (121); the first mounting member (14) has a second mounting hole (141) for connecting with the explosion-proof valve (6); when the explosion-proof valve (6) is installed in the first mounting member (14), the first mounting member (14) is located on the surface of the first cavity (11a) and is flush with the surface of the explosion-proof valve (6) located in the first cavity (11a).

5. The testing equipment according to any one of claims 1-4, characterized in that, Along a first direction, the first connector (111) is disposed opposite to the third connector (113); the first direction is parallel to the surface of the partition (12) located in the first cavity (11a).

6. The testing equipment according to claim 5, characterized in that, The first connector (111) includes a first part (111a) and a second part (111b). The first part (111a) is used to communicate with an external pipe, the first end of the second part (111b) is connected to the first part (111a), and the second end of the second part (111b) is connected to the first cavity (11a); Along the second direction, the inner diameter of the second part (111b) is not less than the inner diameter of the first part (111a) and the maximum size of the valve cover of the explosion-proof valve (6). The second direction is parallel to the surface of the partition (12) located in the first cavity (11a), and the first direction intersects the second direction. The third connector (113) has the same external dimensions as the first connector (111).

7. The testing equipment according to any one of claims 1-4, characterized in that, The testing equipment also includes a liquid reservoir (15), which is connected to the first cavity (11a).

8. The testing equipment according to any one of claims 1-4, characterized in that, The detector (13) is located on the side of the first mounting hole (121) facing the third connector (113).

9. The testing equipment according to any one of claims 1-4, characterized in that, The housing (11) includes a first housing (114) and a second housing (115), which are respectively sealed to the opposite sides of the partition (12).

10. A testing system, characterized in that, Includes the test equipment (1) as described in any one of claims 1-9.

11. The testing system according to claim 10, characterized in that, The test system also includes a water pump (2) and a throttle valve (3); The output port of the water pump (2) is connected to the input port of the throttle valve (3), the input port of the throttle valve (3) is connected to the first connector (111), and the input port of the water pump (2) is connected to the third connector (113).

12. The testing system according to claim 11, characterized in that, The test system also includes a controller (4); The controller (4) is electrically connected to the detector (13), the water pump (2), and the throttle valve (3) respectively. The controller (4) is used to receive the flow rate data and static pressure data detected by the detector (13), and adjust the power of the water pump (2) and the opening degree of the throttle valve (3) according to the flow rate data and static pressure data.

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