Pump testing device

Abstract

The utility model provides a kind of pump testing device, wherein pump testing device includes: device ontology is equipped with test cavity and with the pressing hole of test cavity communication;Adapter structure is connected to device ontology, adapter structure is used to be detachably connected with pump body, and make pump body and test cavity communication;Pressurizing structure is communicated with test cavity by delivery pipe, and it is used to input pressure medium into test cavity, to increase the pressure in test cavity;Pressure display structure is connected to device ontology, for obtaining and displaying the pressure in test cavity;Pressure relief structure is located on device ontology and is communicated with test cavity, and pressure relief structure is used to discharge pressure medium in test cavity to reduce the pressure of test cavity.The above technical scheme is used, avoids the rework caused by leakage problem after pump body is back loaded, reduces the waste of manpower and material resources, shortens the repair period.

Description

Technical Field

[0001] This utility model relates to the technical field of nuclear power plant maintenance equipment, and more specifically, to a pump inspection device. Background Technology

[0002] In the nuclear industry, single-stage, single-suction, pull-back centrifugal pumps are widely used in various fluid transport scenarios due to their specific structure and performance characteristics. This type of centrifugal pump has high assembly requirements and precision components, which places stringent demands on its maintenance.

[0003] Improper installation during maintenance can easily lead to quality problems such as damage to internal components of the mechanical seal. If on-site personnel fail to detect these potential problems in time during the pump's full inspection, it can directly cause mechanical seal leakage and seepage at the pump's main flange sealing surface during the pump's re-inspection and water filling process after reinstallation.

[0004] Pump leaks are a common and frequent type of malfunction. Once a leak occurs, a complete disassembly and inspection of the pump is usually required, along with replacement of relevant components, which undoubtedly results in a significant waste of manpower and resources. Especially for critical pumps, maintenance schedules are often very tight; rework due to leaks can cause substantial economic losses for nuclear power plants and related companies.

[0005] Currently, after a complete disassembly and inspection of the pump, there is no direct way to check for leaks. The industry generally ensures pump maintenance quality by guaranteeing that all data collected during the overhaul process meets standards. While refilling the pump with water after reassembly can check the overall sealing quality of the pump core seal, if a problem is found at this stage, the pump needs to be reworked. This not only results in a significant waste of manpower and resources, but for critical single-stage centrifugal pumps, rework can even lead to reduced unit power output, causing immeasurable economic losses to the power plant. Utility Model Content

[0006] The purpose of this invention is to provide a pump inspection device to solve the technical problem in the prior art that the overall sealing quality of a disassembled pump cannot be directly inspected, resulting in a waste of manpower and resources.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A pump testing device is provided, comprising:

[0009] The device body is provided with a test chamber and a pressure hole communicating with the test chamber;

[0010] A connecting structure is attached to the device body, the connecting structure being detachably connected to the pump body and allowing the pump body to communicate with the test chamber;

[0011] A pressurizing structure is connected to the pressure hole of the test chamber through a delivery pipe and is used to input a pressure medium into the test chamber to increase the pressure in the test chamber.

[0012] A pressure display structure, connected to the device body, is used to acquire and display the pressure in the test chamber;

[0013] A pressure relief structure is provided on the device body and communicates with the test chamber. The pressure relief structure is used to discharge the pressure medium in the test chamber to reduce the pressure in the test chamber.

[0014] By adopting the above technical solution, the pump inspection device provided in this embodiment can perform an effective overall sealing inspection of the pump body before reinstallation. By directly detecting pressure changes, it can promptly identify problems with the dynamic and static sealing components inside the pump body, avoiding rework due to leakage after pump body reinstallation, reducing the waste of manpower and resources, and shortening the maintenance period. Especially for important pump bodies in places such as nuclear power plants, it can effectively avoid unit power reduction and significant economic losses caused by rework, ensuring the smooth and efficient completion of pump maintenance work.

[0015] In one embodiment, the adapter structure is detachably connected to the device body.

[0016] In one embodiment, the pump testing device includes a plurality of the adapter structures, which are adapted to different models of pump bodies, and one of the adapter structures is selectively installed on the device body.

[0017] In one embodiment, the upper side of the device body along the direction of gravity is provided with a sealing port communicating with the test chamber;

[0018] The adapter structure is detachably covered by the sealing port. The adapter structure has a through-port that communicates with the sealing port. The pump body can be detachably covered by the through-port, and the pump cover of the pump body can extend into the test chamber through the through-port so that the interior of the pump body communicates with the test chamber.

[0019] In one embodiment, the device body is provided with a first fixing hole located next to the sealing port, the adapter structure is provided with a second fixing hole corresponding to the first fixing hole, and the pump testing device further includes a first fastener, which is used to sequentially pass through the second fixing hole and the first fixing hole to detachably fix the adapter structure to the device body.

[0020] In one embodiment, the adapter structure is provided with a third fixing hole located next to the adapter interface. The third fixing hole is configured to correspond to the fourth fixing hole of the pump body. The pump inspection device further includes a second fastener, which is sequentially inserted through the fourth fixing hole and the third fixing hole to detachably fix the pump body to the adapter structure.

[0021] In one embodiment, the adapter structure has a first sealing groove that is annular and communicates with the sealing port on the side away from the test chamber, and the first sealing groove is used to abut against the pump body.

[0022] In one embodiment, the pump testing device further includes a first sealing element disposed in the first sealing groove and in an annular shape, the first sealing element being used to seal the area between the bottom of the first sealing groove and the pump body.

[0023] In one embodiment, the upper side of the device body is provided with a second sealing groove that is annular and communicates with the test chamber, and the side of the adapter structure facing the device body is provided with an annular abutment portion that can abut the bottom of the first sealing groove.

[0024] In one embodiment, the pump testing device further includes a second sealing element disposed within the second sealing groove and in an annular shape, the second sealing element being used to seal the area between the bottom of the second sealing groove and the contact portion.

[0025] In one embodiment, the pressure relief structure and the pressure punch are located on opposite sides of the device body.

[0026] In one embodiment, the pressurizing structure is a water pump, and the pressure relief structure is a drain valve.

[0027] In one embodiment, the pressurization structure is an air pump, and the depressurization structure is an exhaust valve. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the pump testing device provided in an embodiment of the present invention.

[0030] Figure 2 This is a schematic diagram of a pump testing device provided in an embodiment of the present invention, wherein the pump testing device is equipped with a pump body.

[0031] Figure 3 yes Figure 2 Enlarged view of section "A" in the image.

[0032] The labels for the attached figures are as follows:

[0033] 1. Device body; 2. Adapter structure; 3. Pump body; 4. Pressurization structure; 5. Pressure display structure; 6. Pressure relief structure;

[0034] 11. Test chamber; 12. Pressure test hole; 13. First fixing hole; 14. Sealing port; 31. Pump cover; 20. Adapter; 21. Second fixing hole; 24. Abutment part; 41. Delivery pipe;

[0035] 221. First sealing groove; 222. First sealing element; 101. Second sealing groove; 102. Second sealing element; 223. Third fixing hole. Detailed Implementation

[0036] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0037] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be located directly on or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component.

[0038] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or the number of technical features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. The specific implementation of this utility model is described in more detail below with reference to specific embodiments:

[0040] like Figure 1 and Figure 3 As shown, an embodiment of this utility model provides a pump testing device, comprising:

[0041] The device body 1 is provided with a test chamber 11 and a pressure hole 12 communicating with the test chamber 11.

[0042] The adapter structure 2 is connected to the device body 1. The adapter structure 2 is used for detachable connection with the pump body 3, allowing the pump body 3 to communicate with the test chamber 11. It is understood that, since the pump body 3 is connected to the test chamber 11, the pressure inside the pump body 3 is equal to the pressure inside the test chamber 11. Specifically, the adapter structure 2 is provided with an adapter interface 20 connecting to the test chamber 11. The pump cover 31 of the pump body 3 can extend into the test chamber 11 through the adapter interface 20 of the adapter structure 2, so that the pressure inside the pump body 3 is connected to the test chamber 11.

[0043] The pressurizing structure 4 is connected to the pressure hole 12 of the test chamber 11 via a delivery pipe 41, meaning that both ends of the delivery pipe 41 are connected to the pressurizing structure 4 and the pressure hole 12, respectively. The pressurizing structure 4 is also used to input the pressure medium into the test chamber 11 to increase the pressure in the test chamber 11.

[0044] Specifically, the pressure medium can be liquid or gas. The pressurization structure 4 increases the pressure in the test chamber 11 by introducing liquid or gas into the test chamber 11 through the pressure hole 12 via the delivery pipe 41.

[0045] Specifically, the pressure hole 12, as a dedicated interface on the device body 1, directly communicates with the interior of the test chamber 11, providing a clear and fixed channel for the pressurizing structure 4 to deliver the pressure medium. In this embodiment, the pressure hole 12 is located at the middle of the device body 1 in the vertical direction, balancing efficient transmission of the pressure medium with the overall layout of the device. This not only shortens the path of the medium into the chamber and reduces pressure loss, but also facilitates the connection operation of the pressurizing structure 4. Furthermore, the connection between the pressure hole 12 and the delivery pipe 41 can be achieved using a threaded connection or other sealing method to ensure no leakage of the pressure medium at the connection point during high-pressure transmission, thus guaranteeing the stability of the pressure medium transmission. After the pump body 3 and the device body 1 are sealed together via the adapter structure 2, the pressurizing structure 4 injects the pressure medium into the test chamber 11 through the delivery pipe 41 and the pressure hole 12. With the help of the channel function of the pressure hole 12, the pressure medium quickly fills the test chamber 11 and the pump body 3, thereby establishing the pressure environment required for testing.

[0046] The pressure display structure 5, connected to the device body 1, is used to acquire and display the pressure in the test chamber 11; specifically, the pressure display structure 5 can be directly connected to the device body 1 to directly acquire and display the pressure in the test chamber 11; see reference. Figure 1The pressure display structure 5 can also be indirectly connected to the device body 1 by connecting to the delivery pipe 41, so as to indirectly obtain and display the pressure in the test chamber 11 by obtaining the pressure in the delivery pipe 41. This embodiment does not limit this.

[0047] The pressure relief structure 6 is located on the device body 1 and communicates with the test chamber 11. The pressure relief structure 6 is used to discharge the pressure medium in the test chamber 11 to reduce the pressure in the test chamber 11.

[0048] The pump testing device consists of a device body 1, a connecting structure 2, a pressurizing structure 4, a pressure relief structure 6, and a pressure display structure 5. The device body 1 is provided with a test chamber 11 and a pressure hole 12 communicating with the test chamber 11. The connecting structure 2 is connected to the device body 1 and is used to connect the pump body 3 and the test chamber 11 to realize the communication between the pump body 3 and the test chamber 11. The pressurizing structure 4 is connected to the test chamber 11. The pressure display structure 5 is connected to the device body 1 to obtain and display the pressure in the test chamber 11. The pressure relief structure 6 is provided on the device body 1 and communicates with the test chamber 11.

[0049] It needs to be further explained that the pump testing device of this embodiment can simulate the working environment of the pump body 3. For example, the pump body 3 is provided with a dynamic sealing component and a static sealing component. The pump cover 31 of the pump body 3 extends into the test chamber 11 through the adapter 20 of the adapter structure 2, so that the interior of the pump body 3 and the test chamber 11 are connected to form a connected structure. Then, the sealing performance of the dynamic sealing component and the static sealing component of the pump body 3 can be tested by the pump testing device of this embodiment.

[0050] Its working principle is as follows: The pump cover 31 of the pump body 3 is connected to the device body 1 through the adapter structure 2, so that the pump body 3 and the test chamber 11 form a communication structure. The pressure inside the pump body 3 is equal to the pressure inside the test chamber 11, and the pressure relief structure 6 is closed. Then, the pressure medium is introduced into the test chamber 11 by the pressurization structure 4 to increase the internal pressure. At the same time, the pressure display structure 5 is used to obtain and display the pressure value in the test chamber 11 in real time until the pressure in the test chamber 11 reaches the preset value (for example, the pressure value is equal to or slightly higher than the working pressure of the pump body 3 to simulate the working environment of the pump body 3). Then, the sealing performance of the pump body 3 is judged by the change of the pressure value displayed by the pressure display structure 5 within a preset time (for example, 30 minutes). That is, the dynamic sealing component and static sealing component of the pump body 3 are judged by the change of pressure in the test chamber 11 within the preset time. If the pressure value displayed by the pressure display structure 5 remains unchanged within the preset time, meaning there is essentially no pressure drop within the test chamber 11 within the preset time, it indicates that there is no leakage in the dynamic and static sealing components of the pump body 3, and the overall sealing performance of the pump body 3 is good and meets the usage requirements. Conversely, if the pressure value displayed by the pressure display structure 5 changes within the preset time, meaning there is a pressure drop within the test chamber 11 within the preset time, it indicates that there is leakage in the dynamic and static sealing components of the pump body 3, and the overall sealing performance of the pump body 3 does not meet the usage requirements, requiring the pump body 3 to be repaired. After the test is completed, the pressure relief structure 6 is opened to discharge the pressure medium in the test chamber 11 to reduce the pressure for the next test.

[0051] By adopting the above technical solution, the pump inspection device provided in this embodiment can effectively inspect the overall sealing performance of the pump body 3 before reinstallation. By directly detecting pressure changes, it can promptly identify problems with the dynamic and static sealing components inside the pump body 3, avoiding rework due to leakage after reinstallation of the pump body 3, reducing the waste of manpower and resources, and shortening the maintenance period. Especially for important pump bodies 3 in places such as nuclear power plants, it can effectively avoid unit power reduction and significant economic losses caused by rework, ensuring the smooth and efficient completion of pump maintenance work.

[0052] In one embodiment, the adapter structure 2 is detachably connected to the device body 1.

[0053] By adopting the above technical solution, the detachable design of the adapter structure 2 enables it to be adapted to different types of pump bodies 3, thereby improving the versatility and practicality of the device.

[0054] In one embodiment, the pump testing device includes multiple adapter structures 2, which are used to adapt to different models of pump bodies 3, and one of the multiple adapter structures 2 is selectively installed on the device body 1.

[0055] Specifically, the pump inspection device includes multiple adapter structures 2, which are used to adapt to different models of pump bodies 3. Each adapter structure 2 is selectively installed on the device body 1, further enhancing the device's versatility design. Structurally, although the multiple adapter structures 2 have different specifications, they can all be detachably connected to the device body 1, ensuring interchangeability. During operation, for a specific model of pump body 3 to be inspected, the corresponding adapter structure 2 is selected and installed on the device body 1 to create a suitable inspection channel. The other adapter structures 2 remain on standby when not in use, achieving flexible switching between "selective installation".

[0056] By adopting the above technical solution, on the one hand, the limitation that a single adapter structure 2 can only be adapted to a specific pump body 3 is overcome. By using one device in conjunction with multiple adapter structures 2, the inspection needs of various pump body models 3 can be covered, which greatly reduces the cost of configuring inspection devices for different pump bodies 3 separately. This is especially suitable for scenarios such as nuclear power plants where there are various pump body models 3. On the other hand, the "selective installation" mode can quickly complete the replacement of the adapter structure 2, reduce equipment adjustment time, and improve inspection efficiency. At the same time, each adapter structure 2 is optimized for a specific pump body 3, which can ensure the sealing and stability of the connection with the corresponding pump body 3, and ensure the accuracy of inspection of different pump body models 3, thereby comprehensively improving the applicability and practical value of the device.

[0057] To enable the adapter structure 2 to be detachably connected to the device body 1. For example... Figures 1 to 3 As shown, in one embodiment, the upper side of the device body 1 along the direction of gravity is provided with a sealing port 14 communicating with the test chamber 11; the adapter structure 2 is detachably covered by the sealing port 14, and the adapter structure 2 is provided with an adapter interface 20 that passes through and communicates with the sealing port 14. The pump body 3 can be detachably covered by the adapter interface 20, and the pump cover 31 of the pump body 3 can extend into the test chamber 11 through the adapter interface 20 so that the interior of the pump body 3 communicates with the test chamber 11.

[0058] It is understandable that the pump testing device and the pump body 3 share a common form of sealed testing environment.

[0059] Based on this, the adapter structure 2 is first placed over the sealing port 14, and then the pump cover 31 of the pump body 3 is inserted into the test chamber 11 through the adapter 20, and the pump body 3 is sealed over the adapter 20, so that the pump body 3 can be quickly and efficiently installed on the pump test device.

[0060] Preferably, the diameter of the adapter 20 is smaller than the diameter of the sealing port 14, so as to ensure that the space of the test chamber 11 can meet the inspection requirements.

[0061] Specifically, such as Figure 3The device body 1 shown has a first fixing hole 13 located beside the sealing port 14, and the adapter structure 2 has a second fixing hole 21 corresponding to the first fixing hole 13. The pump testing device also includes a first fastener, which is used to sequentially pass through the second fixing hole 21 and the first fixing hole 13 to detachably fix the adapter structure 2 to the device body 1. The first fixing hole 13, the second fixing hole 21, and the first fastener are arranged in a one-to-one correspondence. The number of the first fixing hole 13, the second fixing hole 21, and the first fastener can be set as needed (1, 2, 3, 4, etc.), and this application embodiment does not impose any limitation on this.

[0062] Preferably, multiple first fixing holes 13, second fixing holes 21, and first fasteners are provided and are evenly distributed around the periphery of the sealing opening 14.

[0063] Specifically, both the first fixing hole 13 and the second fixing hole 21 are threaded holes, and the first fastener is a bolt. The first fastener enables the adapter structure 2 and the device body 1 to achieve a stable and detachable connection through the thread. On the one hand, the threaded connection has good sealing performance, which can ensure that the pressure medium is not prone to leakage at the connection between the test chamber 11 and the adapter structure 2 during the pressure test, thus ensuring the accuracy of the test process. On the other hand, the detachable threaded connection makes it easy to replace the adapter structure 2 with a suitable one according to different models of pump bodies 3. The installation and removal of the adapter structure 2 can be completed simply by turning it, which is convenient and further improves the versatility and flexibility of the device. This allows a set of devices to be adapted to the test requirements of more specifications of pump bodies 3 by replacing different adapter structures 2 with the first fastener, thus enhancing the practicality and economy of the device.

[0064] Of course, in other possible implementations, the adapter structure 2 can also be detachably connected to the device body 1 by means of snap-fit ​​or other methods. This application embodiment does not limit this.

[0065] Specifically, such as Figure 3 As shown, the adapter structure 2 has a third fixing hole 223 located beside the adapter interface 20. The third fixing hole 223 is configured to correspond with the fourth fixing hole of the pump body. The pump inspection device also includes a second fastener, which is sequentially inserted through the fourth fixing hole and the third fixing hole 223 to detachably fix the pump body to the adapter structure 2. The third fixing hole 223, the fourth fixing hole, and the second fastener are configured in a one-to-one correspondence. The number of the third fixing hole 223 and the second fastener can be set as needed, such as 1, 2, 3, or 4, depending on the number of the fourth fixing holes. This embodiment does not impose any limitations on this.

[0066] Specifically, the diameter, depth, and thread specifications (such as pitch and tooth profile) of the third fixing hole 223 are strictly matched with the fourth fixing hole preset in the pump body 3, and the central axes of the two are collinear to ensure that the hole positions are completely corresponding during assembly; the second fastener equipped with the pump inspection device is a standardized bolt or stud component adapted to the hole position parameters, and its rod diameter and thread length form a clearance fit or transition fit with the dimensional accuracy of the fixing hole, and the head size is larger than the diameter of the fixing hole to provide clamping force.

[0067] When installing or inspecting the pump body 3, the fourth fixing hole of the pump body 3 is aligned with the third fixing hole 223 by means of the positioning reference. The second fastener is then inserted into the fourth fixing hole and the third fixing hole 223 in sequence and a pre-tightening force is applied. The axial force generated by the thread engagement is used to make the contact surface of the pump body 3 and the transition structure 2 fit tightly together.

[0068] Of course, in other possible implementations, the adapter structure 2 can also be detachably connected to the pump body 3 by means of snap-fit ​​or other methods. This application embodiment does not limit this.

[0069] like Figure 3 As shown, in one embodiment, the adapter structure 2 is provided with a first sealing groove 221 that is annular and communicates with the sealing port 14 on the side away from the test chamber 1. The first sealing groove 221 is used to abut against the pump body 3.

[0070] Based on this, by setting a first sealing groove 221 that can contact and abut against the pump body 3 on the side of the adapter structure 2 away from the test chamber 1, the sealing performance of the connection between the adapter structure 2 and the pump body 3 is effectively improved, the risk of misjudgment due to leakage between the adapter structure 2 and the pump body 3 during the inspection is effectively reduced, and the reliability of the pump body 3 inspection is ensured.

[0071] like Figure 3 As shown, in one embodiment, the pump inspection device further includes a first sealing member 222 disposed in the first sealing groove 221 and in an annular shape, the first sealing member 222 being used to seal the area between the bottom of the first sealing groove 221 and the pump body 3.

[0072] Based on this, by setting a first sealing element 222 in the first sealing groove 221, the first sealing element 222 seals against the bottom of the first sealing groove 221 and the pump body 3. Based on the precise matching of the first sealing groove 221 and the first sealing element 222, the nuclear-grade zero leakage requirement is met, further improving the sealing performance of the connection between the transfer structure 2 and the pump body 3, further reducing the risk of misjudgment due to leakage between the transfer structure 2 and the pump body 3 during inspection, further ensuring the reliability of the pump body 3 inspection, and further reducing the losses from misjudgment or rework caused by leakage between the transfer structure 2 and the pump body 3.

[0073] like Figure 3As shown, in one embodiment, the upper side of the device body 1 is provided with a second sealing groove 101 that is annular and communicates with the test chamber 11, and the side of the transition structure 2 facing the device body 1 is provided with an annular abutment part 24 that can abut the bottom of the first sealing groove 101.

[0074] Based on this, by providing a second sealing groove 101 on the upper side of the device body 1 that can contact and abut against the transfer structure 2, the sealing performance between the transfer structure 2 and the device body 1 is effectively improved, the risk of misjudgment due to leakage between the transfer structure 2 and the device body 1 during the inspection is effectively reduced, and the reliability of the pump body 3 inspection is ensured.

[0075] like Figure 3 As shown, in one embodiment, the pump testing device further includes a second sealing member 102 disposed in the second sealing groove 101 and in an annular shape, the second sealing member 102 being used to seal the area between the bottom of the second sealing groove 101 and the contact portion 24.

[0076] Based on this, by setting a second sealing element 102 in the second sealing groove 101, the second sealing element 102 seals the connection between the bottom of the second sealing groove 101 and the transition structure 2. Based on the precise matching between the second sealing groove 101 and the second sealing element 102, the nuclear-grade zero-leakage requirement is met, further improving the sealing performance of the connection between the transition structure 2 and the device body 1, further reducing the risk of misjudgment due to leakage between the transition structure 2 and the device body 1 during inspection, further ensuring the reliability of the pump body 3 inspection, and further reducing the losses from misjudgment or rework caused by leakage between the transition structure 2 and the pump body 3.

[0077] It should be noted again that both the first sealing groove 221 and the second sealing groove 101 are annular groove structures, forming a closed annular groove without any breaks. The groove depth and width are uniform along the circumference to ensure a continuous and dimensionally stable sealing installation space. The matching first sealing element 222 and second sealing element 102 are annular components (such as elastic O-rings, metal-coated annular sealing rings, etc.). Their shape, inner diameter, outer diameter and cross-sectional dimensions are precisely matched with the annular groove, and they can be completely embedded in the annular groove to ensure a complete fit between the sealing element and the inner wall of the annular groove.

[0078] like Figure 1 and Figure 2 As shown, in one embodiment, the pressure relief structure 6 and the pressure punch 12 are located on opposite sides of the device body 1.

[0079] Based on this, by setting the pressure relief structure 6 and the pressure injection hole 12 on opposite sides of the device body 1, the pressure medium can form a through-flow path within the test chamber 11. During pressurization, the pressure medium enters from the pressure injection hole 12 side, filling the test chamber 11 more evenly and acting on the pump body 3, reducing local eddies or pressure dead zones. During depressurization, the pressure medium is discharged from the pressure relief structure 6 on the opposite side, utilizing the medium's own flow inertia to improve discharge efficiency and avoid residual pressure medium inside the test chamber 11, laying the foundation for the accuracy of the next test. In addition, setting them on opposite sides can effectively isolate the pressurization and depressurization operation areas, preventing operators from accidentally touching the pressure relief structure 6 when connecting the pressurization structure 3 and opening it, thus releasing the pressure medium and reducing the risk of misoperation. At the same time, this spatial separation makes the device layout clearer, facilitating operators to quickly identify functional interfaces and shortening operation preparation time.

[0080] like Figure 1 and Figure 2 As shown, in one embodiment, the pressurizing structure 4 is a water pump and the pressure relief structure 6 is a drain valve; or, the pressurizing structure 4 is an air pump and the pressure relief structure 6 is an air vent valve.

[0081] Specifically, water, as an incompressible medium, requires a water pump for stable delivery to pressurize it. The structure of the drain valve (such as valve core sealing and bore design) is more suitable for the rapid discharge of liquid media, which can avoid corrosion of the cavity caused by water residue or mixing of media during the next inspection. Gas, as a compressible medium, can be more efficiently established by an air pump, while the exhaust valve facilitates the release of gas pressure. Furthermore, its valve body design can reduce turbulence noise during gas discharge and improve operational safety.

[0082] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pump testing device, characterized in that, include: The device body is provided with a test chamber and a pressure hole communicating with the test chamber; A connecting structure is attached to the device body, the connecting structure being detachably connected to the pump body and allowing the pump body to communicate with the test chamber; A pressurizing structure is connected to the pressure hole of the test chamber through a delivery pipe and is used to input a pressure medium into the test chamber to increase the pressure in the test chamber. A pressure display structure, connected to the device body, is used to acquire and display the pressure in the test chamber; A pressure relief structure is provided on the device body and communicates with the test chamber. The pressure relief structure is used to discharge the pressure medium in the test chamber to reduce the pressure in the test chamber.

2. The pump testing device as described in claim 1, characterized in that, The adapter structure is detachably connected to the main body of the device.

3. The pump testing device as described in claim 2, characterized in that, The pump testing device includes multiple adapter structures, which are used to adapt to different models of pump bodies, and one of the multiple adapter structures is selectively installed on the device body.

4. The pump testing device as described in claim 2, characterized in that, The upper side of the device body along the direction of gravity is provided with a sealing port that communicates with the test chamber. The adapter structure is detachably covered by the sealing port. The adapter structure has a through-port that communicates with the sealing port. The pump body can be detachably covered by the through-port, and the pump cover of the pump body can extend into the test chamber through the through-port so that the interior of the pump body communicates with the test chamber.

5. The pump testing device as described in claim 4, characterized in that, The device body is provided with a first fixing hole located next to the sealing port, the adapter structure is provided with a second fixing hole corresponding to the first fixing hole, and the pump testing device further includes a first fastener, which is used to pass through the second fixing hole and the first fixing hole in sequence to detachably fix the adapter structure to the device body. And / or, the adapter structure is provided with a third fixing hole located next to the adapter interface, the third fixing hole being configured to correspond to the fourth fixing hole of the pump body, and the pump inspection device further includes a second fastener, the second fastener being configured to pass through the fourth fixing hole and the third fixing hole in sequence to detachably fix the pump body to the adapter structure.

6. The pump testing device as described in claim 4, characterized in that, The adapter structure has a first sealing groove that is annular and communicates with the sealing port on the side away from the test chamber. The first sealing groove is used to abut against the pump body.

7. The pump testing device as described in claim 6, characterized in that, The pump testing device further includes a first sealing element that is annularly disposed within the first sealing groove, the first sealing element being used to seal the area between the bottom of the first sealing groove and the pump body.

8. The pump testing device as described in claim 7, characterized in that, The upper side of the device body is provided with a second sealing groove that is annular and communicates with the test chamber. The side of the adapter structure facing the device body is provided with an annular abutment part that can abut the bottom of the first sealing groove.

9. The pump testing device as described in claim 8, characterized in that, The pump testing device further includes a second sealing element that is annularly disposed within the second sealing groove. The second sealing element is used to seal the area between the bottom of the second sealing groove and the contact portion.

10. The pump testing apparatus according to any one of claims 4 to 7, characterized in that, The pressure relief structure and the pressure punch are located on opposite sides of the device body, respectively. And / or, the pressurizing structure is a water pump, and the pressure relief structure is a drain valve; And / or, the pressurization structure is an air pump, and the pressure relief structure is an exhaust valve.

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