A water pressure resistance testing device
Patent Information
- Application Number
- CN202522443948.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-18
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-11-18
AI Technical Summary
为此,测试装置常需加装防护结构以保障测试安全,进一步增加了空间的占用
1、相对于传统的在柜体上集成工位台的阶梯状的柜体和扁平状构造的柜体,其上方基本不具备容纳测试模块的存放空间。而本申请将工位台外置,即无须在柜体上直接形成台面的方式,可使得柜体上部和下部宽度均匀,柜体无须较大宽度也能满足测试模块的安装需求。再结合工位台和防爆罩均可收纳和收拢的形式,且二者收纳盒收纳分别贴靠柜体下部和上部的布局方式,一方面使得二者的收纳和收拢互不干涉,另一方面,也不会使得二者占用的厚度空间叠加,这使得本申请在满足安全测试的前提下,显著降低了柜体在不工作的储藏过程中的空间占用。
Smart Images

Figure CN224921586U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of test piece technology, specifically a water pressure resistance testing device. Background Technology
[0002] The cooling system for the microwave power supply and microwave head of a microwave generator typically uses water cooling. To ensure that the water cooling pipes and their joints have sufficient pressure resistance and prevent leakage, the entire water cooling system must undergo a water pressure test before the product leaves the factory.
[0003] Existing water pressure resistance testing devices typically connect the test piece to a pressurized water circulation pipeline and observe its operation to determine whether its pressure resistance performance is qualified. Its structure is described in the text entitled "A Water Pressure Resistance Testing Stand" in Chinese Patent Publication No. CN206609723U.
[0004] To stably place the test piece, such devices typically have a dedicated work surface: some, like the cited patent, design the test cabinet in a stepped shape, using the lower stepped surface as the work surface; others adopt a flat cabinet structure, using its upper surface as the work surface. However, all these structures result in a large overall footprint for the test device, occupying considerable space both during testing and when storing it.
[0005] In particular, with increasing demands for the reliability of microwave generators, the testing pressures conducted before shipment are higher than the actual operating pressures to ensure the stability of the water-cooled heat dissipation components. Therefore, testing equipment often requires the addition of protective structures to ensure testing safety, further increasing space requirements. This issue urgently needs to be addressed. Utility Model Content
[0006] In order to avoid and overcome the technical problems existing in the prior art, this utility model provides a water pressure resistance testing device, which optimizes the cabinet layout for testing work. It can effectively reduce the space occupation during testing and storage, improve space utilization, and ensure the safety of the testing process.
[0007] To achieve the above objectives, this utility model provides the following technical solution: A water pressure resistance testing device includes a cabinet and a testing module for water pressure resistance testing on the cabinet. A deformable explosion-proof cover and a movable work platform are provided on one side of the cabinet, and the two are arranged sequentially from top to bottom. When the work platform is movable, it has a retracted state in which the lower platform surface is against the lower part of the cabinet side wall, and a working state in which the lower platform surface is detached from the cabinet side wall, so that the upper platform surface forms a working surface. When the explosion-proof cover is deformed, it has a retracted state in which it is folded up and against the upper part of the cabinet side wall, and an unfolded state in which it is unfolded and surrounds the upper platform surface of the work platform in the working state to form a closed testing space. The connection part between the testing module and the test piece is located within the testing space.
[0008] As a further embodiment of this utility model: the explosion-proof cover includes at least two frames arranged side by side in the folded state. The frames have an arched structure, the inner frame is arranged vertically and fixed to the side wall of the cabinet, and the adjacent frames are connected by a flexible explosion-proof membrane; in the unfolded state, all the frames form a fan-shaped distribution on the same side, and the outermost frame is arranged horizontally and fits against the workbench surface in the working state.
[0009] As a further improvement of this utility model: two positioning grooves are fixed on the upper surface of the workstation. When the workstation is in the workstation state, the two sides of the outermost frame in the unfolded state are respectively positioned and accommodated in the groove cavities of the two positioning grooves.
[0010] As a further improvement of this utility model: a latch is movably connected to the cabinet body. When the latch is active, it has a locking state that fits against the outermost frame of the explosion-proof cover in the retracted state, and an unlocking state that avoids the unfolding path of the explosion-proof cover.
[0011] As a further embodiment of this utility model: the workstation is hinged and swaying on the cabinet, and a support rod is also hinged to the lower part of the cabinet on the same side as the workstation. The hinge axes of the support rod and the workstation are both horizontal and parallel to the side wall of the corresponding side of the cabinet. The cantilever end of the support rod can be locked with the workstation to lock and support the workstation in the working state.
[0012] As a further embodiment of this utility model: the latch is slidably installed on the side of the explosion-proof cover on the cabinet, and the sliding path of the latch is parallel to the corresponding side wall of the cabinet. The locking state and the unlocking state are formed by the intersection and avoidance of the unfolding path of the explosion-proof cover when the latch slides.
[0013] As a further improvement of this utility model, the first outlet main valve and the return main valve are arranged outside the test space.
[0014] As a further embodiment of this utility model: the workstation is fixed to one side of the V-shaped hinge bracket, and the other side of the V-shaped hinge bracket is fixedly installed on the cabinet to form a hinged installation of the workstation; a hinge rod is hinged to one side wall of the V-shaped hinge bracket, and the cantilever end of the hinge rod can swing to lock with the other side wall of the V-shaped hinge bracket in the working state, and the hinge rod constitutes the locking part.
[0015] As a further embodiment of this utility model: the workstation is hinged to the cabinet via a hinge seat, and a support rod is also hinged to the cabinet below the side where the workstation is located. The hinge axis of the support rod is parallel to that of the workstation, and the cantilever end of the support rod can be locked to the workstation, thus forming the locking part.
[0016] As a further improvement of this utility model, the valve on the test module that controls the on / off state of the test pipeline is located outside the test space.
[0017] Compared with the prior art, the beneficial effects of this utility model are: 1. Compared to traditional stepped or flat cabinets that integrate workstations, which typically lack storage space above the workstations for test modules, this application externalizes the workstations, eliminating the need for a direct work surface on the cabinet. This results in a more uniform width across the upper and lower sections of the cabinet, allowing for installation of test modules without requiring a large cabinet width. Furthermore, the workstations and explosion-proof covers are both retractable, with their storage boxes positioned separately against the lower and upper parts of the cabinet. This design ensures that the workstations and explosion-proof covers operate independently without interference, and prevents their combined thickness from overlapping. This significantly reduces the space occupied by the cabinet during non-operational storage while still meeting safety testing requirements.
[0018] 2. The explosion-proof cover adopts a fan-shaped unfolding and retracting structure formed by an arched frame and a flexible explosion-proof cover. It is easy and quick to operate by simply rotating the frame. In addition, when the structure is unfolded, it uses gravity to maintain a stable unfolding state and can maintain a stable unfolding state during operation without fixing. When retracted, it occupies almost no space above the workbench, and even the side wall of the cabinet above the workbench is exposed, which is conducive to the assembly of the test part and the connection part on the cabinet.
[0019] 3. A locking mechanism is provided. By swinging the locking mechanism to the locked state, it fits against the outermost frame of the explosion-proof cover when it is folded up, ensuring the stability of the explosion-proof cover when it is folded up.
[0020] 4. The workstation is hinged and swing-mounted onto the side wall of the cabinet. In operation, the upper surface of the workstation rotates to a horizontal position and is stably supported by struts, providing a stable and flat platform for the test piece, facilitating pipe connection and testing. When folded up, the workstation hangs naturally under its own weight, requiring no fixing. Simultaneously, the significantly reduced projected area of the workstation means it occupies almost no extra space when not in use, greatly improving space utilization. This makes it particularly suitable for storage after use in compact workshop or laboratory environments.
[0021] 5. The valves controlling the on / off state of the test pipeline on the test module are located outside the test space. This is so that if a leakage fault occurs under high pressure, the test can be stopped quickly to avoid continuous water leakage. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the structure of this utility model.
[0023] Figure 2 This is a schematic diagram of the three-dimensional rear view structure of this utility model.
[0024] Figure 3 This is a side view of the unfolded state of the explosion-proof cover in this utility model.
[0025] Figure 4 This is a schematic diagram of the pipeline connection structure of this utility model.
[0026] In the diagram: 10. Cabinet; 11. Lock; 20. Workstation; 21. Positioning slot; 22. Support rod; 31. Test outlet valve; 32. Test return valve; 33. Flow meter; 34. Pressure gauge; 35. First outlet main valve; 36. Return main valve; 37. Water tank; 38. Water pressure regulator; 39. Water pump; 310. Filter; 311. Second outlet main valve; 40. Explosion-proof cover; 41. Frame; 42. Flexible explosion-proof membrane; a. Test piece. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] For ease of understanding, the specific structure and working method of this utility model are further described below with reference to the accompanying drawings: The specific structure of this utility model is as follows: Figure 1-4 As shown, its main structure includes a cabinet 10 and a testing module. Preferably, the cabinet 10 adopts a movable structure, and a deformable explosion-proof cover 40 and a movable workstation 20 are provided on one side of the cabinet 10, and the two are arranged sequentially from top to bottom, providing hardware support for the stable placement and safe testing of the test piece a during the testing of the testing device of this application.
[0029] Among them, such as Figure 1 As shown, the workbench 20 has a working state where the lower surface is detached from the side wall of the cabinet 10, allowing the upper surface to form a working surface. Preferably, the upper surface is horizontal or nearly horizontal in this state, allowing the test piece a to be stably placed on its upper surface during testing. Simultaneously, the explosion-proof cover 40, when deformed, can unfold to form a closed testing space with the workbench 20 in its working state, ensuring a safe testing environment for the test piece a during testing.
[0030] In addition, the workstation 20 has a retracted state where its lower surface rests against the lower part of the cabinet 10 (i.e., the area where the side wall of the cabinet 10 is located below the explosion-proof cover 40 for the workstation 20 to rest against); and a retracted state where the explosion-proof cover 40, when deformed, rests against the upper part of the cabinet 10 (i.e., the area where the side wall of the cabinet 10 is located above the workstation 20 for the explosion-proof cover 40 to rest against). In this state, the workstation 20 occupies only its thickness space, and the explosion-proof cover 40 also occupies only its thickness space after being retracted. At the same time, the way they rest against the lower and upper parts of the cabinet 10 respectively ensures that their retraction and retraction do not interfere with each other, and also prevents the thickness space occupied by the two from overlapping.
[0031] Compared to the traditional stepped cabinet 10, the upper part of the cabinet 10 has limited space, necessitating a wider lower part to accommodate the test modules. Similarly, the flat cabinet 10 offers no space above it. This application externalizes the workbench 20, eliminating the need to create a tabletop directly on the cabinet 10. This allows for uniform width at both the top and bottom of the cabinet 10, reducing the need for a large width to accommodate the test modules. Furthermore, the retractable design of both the workbench 20 and the explosion-proof cover 40 significantly reduces the space occupied by the cabinet 10 during non-operation storage while still meeting safety testing requirements.
[0032] Regarding the structural design of the explosion-proof cover 40, such as Figure 1 and Figure 3 As shown, the preferred embodiment of this application is as follows: like Figure 1 As shown, the explosion-proof cover 40 includes at least two arched frames 41 (the specific number depends on the size of the space formed by unfolding). The inner frame 41 is vertically fixed to the cabinet 10, and adjacent frames 41 are connected by a flexible explosion-proof film 42 (a composite material made of high-strength, high-transparency polyester film as the main body, coated with multiple functional coatings through a special process). Figure 3 As shown, when unfolded, the two frames 41 form a fan-shaped skeleton on the same side, with the outermost frame 41 horizontally attached to the upper surface of the workstation 20. This fan-shaped unfolding and folding method requires only a simple rotation of the frame 41, making operation convenient and quick. In the unfolded state, gravity maintains a stable unfolding, and a stable unfolded state can be maintained during operation without the need for fixing. In the folded state, it occupies almost no space above the workstation 20, and even the side wall of the cabinet 10 above the workstation 20 is exposed, which is beneficial for the assembly of the test part a with the connection part on the cabinet 10.
[0033] Furthermore, such as Figure 1 As shown, two positioning slots 21 are fixed on the upper surface of the workstation 20 to engage the two sides of the outermost frame 41 and enhance stability.
[0034] In addition, a latch 11 is movably connected to the cabinet 10. When the latch 11 is active, it has a locking state that fits against the outermost frame 41 of the explosion-proof cover 40 in the retracted state, and an unlocking state that avoids the unfolding path of the explosion-proof cover 40, thus ensuring the stability of the explosion-proof cover 40 in the retracted state.
[0035] In actual implementation, the latch 11 is hinged and swings on the side of the explosion-proof cover 40 on the cabinet 10, and the swing axis of the latch 11 is perpendicular to the corresponding side wall of the cabinet 10. When the explosion-proof cover 40 is in the retracted state, the latch 11 swings until it intersects with the unfolding path of the explosion-proof cover 40, that is, it abuts against the outermost frame 41 of the explosion-proof cover 40 to prevent the explosion-proof cover 40 from unfolding and forming a locked state. When it is necessary to unfold the explosion-proof cover 40, simply rotate the latch 11 so that the latch 11 avoids the unfolding path of the explosion-proof cover 40. At this time, it is the unlocked state of freely unfolding the explosion-proof cover 40.
[0036] In addition, the latch 11 can also be slidably mounted on the side of the explosion-proof cover 40 on the cabinet 10. Since the sliding path of the latch 11 is parallel to the corresponding side wall of the cabinet 10, similar to the swinging implementation of the latch 11 described above, the locking and unlocking states are formed by the latch 11 intersecting with and avoiding the unfolding path of the explosion-proof cover 40 during sliding.
[0037] In actual implementation, the explosion-proof cover 40 can be any existing technology with the aforementioned unfoldable and retractable mechanism, which, when retracted, rests against the upper part of the cabinet 10 and forms a staggered separation from the workstation 20. If the explosion-proof cover 40 is a tent-like unfoldable and retractable structure, preferably, it can also be equipped with a zippered window for taking out and putting in the test piece a.
[0038] Regarding the connection method between cabinet 10 and workstation 20, such as Figure 1 and Figure 2 As shown, the preferred workstation 20 of this application is hinged and swayed on the side wall of the cabinet 10.
[0039] In the working state, the upper surface of the workstation 20 rotates to a horizontal position, providing a stable and flat placement platform for the test piece a, facilitating pipeline connection and testing operations. Simultaneously, to ensure the stability of the workstation 20 in the working state, a locking mechanism is also provided to secure the workstation 20 during operation.
[0040] In implementation, the workstation 20 is hinged to the solid 10 via a V-shaped hinge bracket. One side of the V-shaped hinge bracket is fixed to the workstation 20, and the other side is fixedly mounted on the cabinet 10. Furthermore, a hinge rod is hinged to one side wall of the V-shaped hinge bracket. The cantilever end of this hinge rod can swing to lock against the other side wall of the V-shaped hinge bracket during operation, forming a locking mechanism.
[0041] In practice, the workstation 20 can also be hinged to the cabinet 10 via a hinged seat. A support rod 22 is also hinged to the lower side of the workstation 20 on the cabinet 10. The hinge axis of the support rod 22 is parallel to that of the workstation 20, and the cantilever end of the support rod 22 can be locked with the workstation 20, forming a locking part.
[0042] Specifically, the cantilever end of the support rod 22 / hinged rod can be fixed and locked to the back or side / V-shaped hinge bracket of the workstation 20 through a quick-locking mechanism such as a pin or buckle. When the support rod 22 / hinged rod is locked, it forms a stable triangular support structure with the cabinet 10 and the two side walls of the workstation 20 / V-shaped hinge bracket, which can effectively bear the weight of the test piece a and the additional load that may be generated during operation, prevent the workstation 20 from accidentally tipping over, and ensure the safety of the testing process.
[0043] In the storage state, the locking mechanism between the cantilever end of the support rod 22 and the workstation 20 is released, and the upper surface of the workstation 20 rotates downwards until it is tightly against the lower side wall of the cabinet 10 (preferably, the workstation 20 is vertically arranged at this time). In this state, the workstation 20 hangs down naturally under its own weight without the need for fixing; at the same time, the projected area of the workstation 20 is greatly reduced, so that it occupies almost no extra space during non-testing periods, greatly improving space utilization, and is particularly suitable for storage after use in compact workshop or laboratory environments.
[0044] In practical implementation, the workstation 20 can be any existing mechanism capable of achieving both horizontal and vertical positions, and when folded up, resting against the lower part of the cabinet 10, forming a staggered separation from the explosion-proof cover 40. If the workstation 20 adopts a detachable, movable design, by providing insertion holes on the cabinet 10 for connecting to the working and folded states, especially in the working state, the workstation 20 can be locked by using clips, locking handles, or locking bolts after docking with the insertion holes, thus achieving a stable switch between the working and folded states.
[0045] Based on the above, the specific storage method of the test module inside the cabinet 10 is as follows: Figure 2 As shown, the inner cavity of the cabinet 10 is divided into upper and lower layers. The core large-volume components of the test module include the water tank 37 and water pump 39 located in the lower layer of the inner cavity of the cabinet 10 and the water pressure regulator 38 in the upper layer. They do not need to be piled up in the lower layer of the cabinet 10.
[0046] Furthermore, the specific connections between the test module and the aforementioned large-volume components are mainly as follows: Figure 4As shown: Water tank 37 is connected to two parallel water supply pipes, on which water pump 39 and water pressure regulator 38 are respectively installed. The water supply pipe on water pump 39 is used to fill the interior of test piece a with water; the water supply pipe where water pressure regulator 38 is located is used to regulate water pressure; in addition, a second main outlet valve 311 and a first main outlet valve 35 are respectively installed at the outlet of water pump 39 and water pressure regulator 38 to control the opening and closing of the two sets of parallel water supply pipes. Water tank 37 is also connected to a return pipe, and a return water main valve 36 is installed on the return pipe to control the opening and closing of the return pipe; the confluence pipe of the two water supply pipes and the end of the return pipe together form the connection part for connecting test piece a. During operation, the inlet and outlet of test piece a are connected to the confluence pipe and the return pipe that form the connection part, respectively, to form a water circulation pipeline for testing the water pressure resistance performance of test piece a.
[0047] Furthermore, such as Figure 1 As shown, the valves controlling the opening and closing of the test pipeline on the test module are located outside the test space, that is, the first outlet main valve 35 and the return main valve 36 are located outside the test space. This is so that if a leakage fault occurs under high pressure test environment, the test can be stopped quickly to avoid continuous water leakage.
[0048] Furthermore, such as Figure 4 As shown, pressure gauges 34 are installed on both the return pipe and the confluence pipe of the two sets of water supply pipes to detect the pressure on both sides of the test piece a, ensuring that the inlet and outlet water pressures of the test piece a are consistent. A flow meter 33 is also installed on the return pipe to record the flow rate, which is used to promptly detect situations where the flow rate is too low due to minor blockages in the internal pipes. A filter 310 is also installed on the return tank to filter the water before it flows back to the water tank 37, preventing impurities in the test piece a from entering the water tank 37.
[0049] Based on the above, in order to realize the multi-station synchronous test design of this application, such as Figure 1 and Figure 4 As shown, the confluence pipe has at least two first connection ends connected in parallel at its end, each equipped with a test outlet valve 31; the return pipe has at least two second connection ends connected in parallel at its end, each equipped with a test return valve 32, and the number of first and second connection ends is the same. Multiple independently valve-controlled connection ends allow for simultaneous testing of multiple test components a by opening the valves on the connection ends connected to the test component a.
[0050] Of course, those skilled in the art will recognize that this invention is not limited to the details of the exemplary embodiments described above, but also includes the same or similar structures that can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0051] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
[0052] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.
Claims
1. A water pressure resistance testing device, comprising a cabinet (10) and a testing module on the cabinet (10) for water pressure resistance testing, characterized in that, A deformable explosion-proof cover (40) and a movable workbench (20) are provided on one side of the cabinet (10), and the two are arranged sequentially from top to bottom. When the workbench (20) is movable, it has a storage state in which the lower table surface is close to the lower part of the side wall of the cabinet (10), and a working state in which the lower table surface is detached from the side wall of the cabinet (10) and the upper table surface forms a working surface. When the explosion-proof cover (40) is deformed, it has a retracted state in which it is close to the upper part of the side wall of the cabinet (10), and an unfolded state in which it is unfolded and surrounds the upper table surface of the workbench (20) in the working state to form a closed test space. The connection between the test module and the test piece (a) is located in the test space.
2. The water pressure resistance testing device according to claim 1, characterized in that, The explosion-proof cover (40) includes at least two frames (41) arranged side by side in the folded state. The frames (41) are arched. The inner frame (41) is arranged vertically and fixed to the side wall of the cabinet (10). The adjacent frames (41) are connected by a flexible explosion-proof membrane (42). In the unfolded state, all the frames (41) are distributed in an unfolded fan-shaped shape on the same side, and the outermost frame (41) is arranged horizontally and fits against the table surface of the workstation (20) in the working state.
3. The water pressure resistance testing device according to claim 2, characterized in that, Two positioning slots (21) are fixed on the upper surface of the workstation (20). When the workstation (20) is in the workstation state, the two sides of the outermost frame (41) in the unfolded state are respectively positioned and accommodated in the slot cavity of the two positioning slots (21).
4. A water pressure resistance testing device according to claim 2 or 3, characterized in that, The cabinet (10) is movably connected to a latch (11). When the latch (11) is in motion, it has a locking state that fits against the outermost frame (41) of the explosion-proof cover (40) in the retracted state, and an unlocking state that avoids the unfolding path of the explosion-proof cover (40).
5. The water pressure resistance testing device according to claim 4, characterized in that, The latch (11) is hinged and swings on the side of the explosion-proof cover (40) on the cabinet (10), and the swing axis of the latch (11) is perpendicular to the corresponding side wall of the cabinet (10). The locking state and unlocking state are formed by the intersection and avoidance of the unfolding path of the explosion-proof cover (40) when the latch (11) swings.
6. The water pressure resistance testing device according to claim 4, characterized in that, The latch (11) is slidably installed on the side of the explosion-proof cover (40) on the cabinet (10), and the sliding path of the latch (11) is parallel to the corresponding side wall of the cabinet (10). The locking state and unlocking state are formed by the intersection and avoidance of the unfolding path of the explosion-proof cover (40) when the latch (11) slides.
7. A water pressure resistance testing device according to claim 1, 2, or 3, characterized in that, The workstation (20) is hinged to the cabinet (10), and the hinge axis of the cabinet (10) is parallel to the side wall of the corresponding side of the cabinet (10). It also includes a locking part for locking the workstation (20) in the working state.
8. The water pressure resistance testing device according to claim 7, characterized in that, The workstation (20) is fixed on one side of the V-shaped hinge bracket, and the other side of the V-shaped hinge bracket is fixedly installed on the cabinet (10) to form a hinged installation of the workstation (20); a hinge rod is hinged on one side wall of the V-shaped hinge bracket, and the cantilever end of the hinge rod can swing to lock with the other side wall of the V-shaped hinge bracket in the working state, and the locking part is formed by the hinge rod.
9. The water pressure resistance testing device according to claim 7, characterized in that, The workstation (20) is hinged to the cabinet (10) via a hinge seat. A support rod (22) is also hinged to the cabinet (10) on the side below the workstation (20). The hinge axis of the support rod (22) and the workstation (20) is parallel, and the cantilever end of the support rod (22) can be locked with the workstation (20). The support rod (22) constitutes the locking part.
10. A water pressure resistance testing device according to claim 1, 2, or 3, characterized in that, The valve on the test module that controls the opening and closing of the test pipeline is located outside the test space.
Citation Information
Patent Citations
Water -fast pressure testboard
CN206609723U
