A kind of multifunctional test platform for quick clamping of high-pressure hydrogen valve

Abstract

This utility model discloses a multi-functional test stand for quick clamping of high-pressure hydrogen valves, relating to the field of hydrogen valve testing technology. It includes a placement platform with a placement frame inside. A cylinder is fixedly connected to the center of the placement frame, and an extrusion plate is fixedly connected to the output end of the cylinder. Multiple extrusion components are arranged in a rectangular array at the bottom of the extrusion plate. A placement plate is located at the top of the placement frame. Fixing components that can abut against the top of the placement plate are respectively provided at both ends of the top of the placement platform. This multi-functional test stand for quick clamping of high-pressure hydrogen valves uses a rectangular array of extrusion components, combined with inverted conical protrusions and an inverted trapezoidal hard silicone layer, to achieve adaptive sealing for hydrogen valves of different specifications, effectively compensating for deformation and assembly errors. The fixing components at both ends drive a wedge slider and a connecting plate through a threaded rod, causing a bending block to rotate and lock, achieving quick clamping with a single handle. This makes operation convenient and significantly reduces assembly and disassembly time.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen valve testing technology, specifically a multi-functional test bench for quick clamping of high-pressure hydrogen valves. Background Technology

[0002] A multi-functional test bench for rapid clamping of high-pressure hydrogen valves is a modular testing device designed specifically for high-pressure hydrogen valve components (such as vehicle-mounted hydrogen storage cylinder valves, filling valves, check valves, combination valves, etc.). It integrates rapid positioning, reliable sealing, pressure loading, and airtightness testing. The test bench integrates gas passage interfaces, pressure sensing units, and data acquisition systems, supports automatic pressurization, pressure holding monitoring, leakage judgment, and result output. It features convenient operation, good repeatability, and high safety, and is suitable for various scenarios such as hydrogen energy equipment manufacturing, factory inspection, R&D verification, and on-site maintenance.

[0003] In existing technologies, the cover plate is usually fixed by tightening multiple circumferential bolts one by one. This operation is cumbersome, results in uneven force, and is prone to causing uneven load or damage to the valve body sealing surface due to inconsistent preload. It is also time-consuming and difficult to meet the needs of large-scale testing. At the same time, the compression sealing structure is mostly a rigid metal contact or a single planar sealing ring, which lacks self-adjustment capability and cannot effectively compensate for the differences in height, interface size and surface flatness of different hydrogen valve models. This leads to poor sealing, leakage during the test, and affects the accuracy and safety of the test.

[0004] To address this, we propose a multi-functional test bench for rapid clamping of high-pressure hydrogen valves. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a multi-functional test bench for quick clamping of high-pressure hydrogen valves, which can effectively solve the problems in the background technology.

[0006] Technical solution

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a multi-functional test stand for quick clamping of high-pressure hydrogen valves, including a placement platform, a placement frame is provided inside the placement platform, a cylinder is fixedly connected to the middle of the placement frame, an extrusion plate is fixedly connected to the output end of the cylinder, and multiple extrusion components are arranged in a rectangular array at the bottom of the extrusion plate.

[0008] The top of the placement frame is provided with a placement plate, and the top two ends of the placement platform are respectively provided with fixing components that can fit against the top of the placement plate.

[0009] Furthermore, the extrusion member includes an inverted conical protrusion, which is fixedly connected to the bottom of the extrusion plate. A hard silicone layer is fixedly connected to the outer surface of the inverted conical protrusion, and the cross-section of the hard silicone layer is inverted trapezoidal.

[0010] Furthermore, the fixing component includes a fixing bracket, which is fixedly connected to the top of the placement platform. A wedge slider is slidably connected to the inner wall of the fixing bracket, and a connecting plate is fixedly connected to the top of the wedge slider. A driving component for driving the connecting plate to move is provided on the top of the fixing bracket, and an extrusion component is rotatably connected to the inner wall of the fixing bracket.

[0011] Furthermore, the driving component includes a limiting plate, which is fixedly connected to the top of the fixed bracket. The limiting plate is in contact with the top of the wedge slider, and a threaded rod is threadedly connected to the inner wall of the limiting plate. One end of the threaded rod is rotatably connected to the connecting plate.

[0012] Furthermore, the extrusion component includes a rotating rod, the two ends of which are rotatably connected to the inner wall of the fixed bracket, a bending block is fixedly connected to the top of the rotating rod, a limiting groove matching the edge of the placement plate is opened on the side wall of the bending block, and a spring is fixedly connected between the bending block and the connecting plate.

[0013] Furthermore, the top surface of the placement plate is provided with a mounting hole, and a valve is fixedly connected inside the mounting hole, the valve being connected to the inside of the placement frame.

[0014] Beneficial effects

[0015] Compared with the prior art, this utility model provides a multi-functional test bench for quick clamping of high-pressure hydrogen valves, which has the following advantages:

[0016] 1. This is a multi-functional test bench for quick clamping of high-pressure hydrogen valves. The test bench adopts extrusion parts distributed in a rectangular array, combined with inverted conical protrusions and inverted trapezoidal hard silicone layers to achieve adaptive sealing for hydrogen valves of different specifications, effectively compensating for deformation and assembly errors.

[0017] 2. The fixed components at both ends drive the wedge slider and the connecting plate through the threaded rod, which drives the bending block to rotate and lock, realizing quick clamping with a single handle, which is convenient to operate and greatly shortens the assembly and disassembly time. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of the multi-functional test bench for quick clamping of high-pressure hydrogen valves provided by this utility model.

[0019] Figure 2 A schematic diagram of the state of the fixing component provided by this utility model;

[0020] Figure 3 This utility model provides a structural cross-sectional diagram of a multi-functional test bench for quick clamping of high-pressure hydrogen valves.

[0021] Figure 4for Figure 3 An enlarged schematic diagram of A shown.

[0022] The following are the labels in the diagram: 1. Placement platform; 2. Placement frame; 3. Cylinder; 4. Extrusion plate; 5. Inverted conical protrusion; 6. Hardened silicone layer; 7. Placement plate; 8. Fixing bracket; 9. Limiting plate; 10. Threaded rod; 11. Wedge slider; 12. Connecting plate; 13. Rotating rod; 14. Bending block; 15. Limiting groove; 16. Spring; 17. Valve. Detailed Implementation

[0023] To make the technical means, creative features, and achieved objectives and effects of this utility model readily understandable, the present utility model will be further described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0024] To address the shortcomings of existing technologies, such as Figure 1-4 As shown, this utility model discloses a multifunctional test bench for rapid clamping of high-pressure hydrogen valves, which aims to achieve rapid positioning, reliable sealing and automated air tightness testing of 17 types of high-pressure hydrogen valve components under high-pressure conditions. It is suitable for factory inspection and R&D verification of key hydrogen energy components such as fuel cell systems, vehicle-mounted hydrogen storage cylinder valves, and hydrogen refueling station pipeline valves 17.

[0025] The test bench includes an integral placement platform 1, which serves as the basic support structure for the entire device. It is made of high-strength cast steel or aluminum alloy and has good rigidity and vibration resistance. Inside the placement platform 1, there is a placement frame 2, which is a rectangular cavity structure used to accommodate the high-pressure hydrogen valve to be tested. A cylinder 3 is fixedly connected to the middle of the placement frame 2. The cylinder 3 is preferably a double-acting servo cylinder 3 or an electric push rod, which has precise position control and adjustable output force characteristics. The output end of the cylinder 3 extends vertically downward and is fixedly connected to a pressing plate 4. The pressing plate 4 is a thick-walled metal plate to ensure that it does not deform during high-pressure clamping.

[0026] Multiple extrusion components are arranged in a rectangular array at the bottom of the extrusion plate 4. This design can adapt to complex valve body structures with multiple interfaces and sizes, and achieve multi-point synchronous compression sealing. Each extrusion component includes an inverted conical protrusion 5, which is fixed to the lower surface of the extrusion plate 4 by thread or welding. Its cone angle is usually designed to be 30° to 60° to facilitate alignment and increase the contact area. The outer surface of the inverted conical protrusion 5 is covered with a hard silicone layer 6. This silicone layer is made of high-resilience, oil-resistant, and hydrogen-embrittlement-resistant fluorosilicone rubber or perfluoroether rubber. Its cross-section is an inverted trapezoidal structure, that is, wider at the top and narrower at the bottom. It can generate a radial expansion effect during compression, enhance the fit with the sealing surface at the top of the valve body, effectively compensate for processing errors and minor unevenness, and improve sealing reliability.

[0027] A placement plate 7 is provided on the top of the placement frame 2. The placement plate 7 is a detachable cover plate used to seal the test chamber and form a closed pressure space. Fixing components are provided at both ends of the top of the placement platform 1 to securely lock the placement plate 7 above the placement frame 2 to prevent loosening or leakage during high pressure testing.

[0028] The fixing component includes a fixing bracket 8, which is vertically fixed to the top of the left and right sides of the placement platform 1 by bolts or welding to form a stable support frame. A wedge slider 11 is slidably connected to the inner wall of the fixing bracket 8. The wedge slider 11 can slide up and down in the vertical direction. A connecting plate 12 is fixedly connected to its top to transmit driving force. A driving component for driving the connecting plate 12 is provided on the top of the fixing bracket 8 to realize the quick locking and releasing of the placement plate 7.

[0029] The driving component includes a limiting plate 9, which is horizontally fixed to the top of the fixed bracket 8 to limit the upward stroke of the wedge slider 11 and ensure operational safety. A threaded rod 10 is threadedly connected to the inner wall of the limiting plate 9. The threaded rod 10 extends vertically downward and its bottom end is rotatably connected to the connecting plate 12 through a ball joint or universal joint. By manually rotating the handle or electrically driving the threaded rod 10, the connecting plate 12 can be moved horizontally, thereby pushing the wedge slider 11 to slide along the guide rail.

[0030] An extrusion component is rotatably connected to the inner wall of the fixed bracket 8. This extrusion component includes a horizontally arranged rotating rod 13, whose two ends are mounted to the side wall of the fixed bracket 8 via bearings, allowing it to rotate freely within a certain angle range. A bending block 14 is fixedly connected to the top of the rotating rod 13. The bending block 14 has an L-shaped or Z-shaped structure, and its side wall has a limiting groove 15 that matches the edge of the placement plate 7. When the placement plate 7 is placed in the test position, the limiting groove 15 can engage with its edge, achieving lateral constraint and anti-detachment functions. The bending block 14 and the connecting... A spring 16 is fixedly connected between the plates 12. The spring 16 is a tension spring or a torsion spring. Under normal conditions, it is in a pre-stretched state. When the connecting plate 12 is driven to move by the threaded rod 10, the spring 16 pushes the bending block 14 to rotate around the rotating rod 13, so that the wedge slider 11 contacts the bottom of the bending block 14 and squeezes it. After the wedge slider 11 and the bottom of the bending block 14 are completely in contact, the limiting groove 15 will be locked on the top of the placement plate 7 to achieve fixation. Otherwise, the limiting groove 15 will disengage from the edge of the placement plate 7 to achieve quick unlocking.

[0031] An installation hole is provided in the center of the top surface of the placement plate 7. A valve 17 is fixedly connected in the installation hole. The valve 17 is a stainless steel needle valve or a solenoid valve. It is connected to the external hydrogen gas through a pipeline. The outlet end of the valve 17 is connected to the inside of the placement frame 2, so that high-pressure gas can be injected into the test chamber through the valve 17 to apply a set pressure to the high-pressure hydrogen valve under test and perform pressure holding, differential pressure or flow method air tightness test.

[0032] In summary, this utility model achieves rapid clamping, reliable sealing, and efficient testing of high-pressure hydrogen valves through multi-point elastic extrusion, inverted cone adaptive sealing, mechanical quick-locking mechanism, and modular integrated design, significantly improving testing efficiency and safety. It is suitable for various application scenarios such as laboratories, production lines, and on-site maintenance.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A multi-functional test bench for quick clamping of high-pressure hydrogen valves, characterized in that: Includes a placement platform (1), inside which is a placement frame (2), a cylinder (3) is fixedly connected to the middle of the placement frame (2), and an extrusion plate (4) is fixedly connected to the output end of the cylinder (3). Multiple extrusion parts are arranged in a rectangular array at the bottom of the extrusion plate (4). The top of the placement frame (2) is provided with a placement plate (7), and the top two ends of the placement platform (1) are respectively provided with fixing components that can fit against the top of the placement plate (7).

2. The multi-functional test stand for quick clamping of high-pressure hydrogen valves according to claim 1, characterized in that: The extrusion part includes an inverted conical protrusion (5), which is fixedly connected to the bottom of the extrusion plate (4). A hard silicone layer (6) is fixedly connected to the outer surface of the inverted conical protrusion (5), and the cross-section of the hard silicone layer (6) is an inverted trapezoid.

3. A multi-functional test stand for quick clamping of high-pressure hydrogen valves according to claim 2, characterized in that: The fixing component includes a fixing bracket (8), which is fixedly connected to the top of the placement platform (1). A wedge slider (11) is slidably connected to the inner wall of the fixing bracket (8). A connecting plate (12) is fixedly connected to the top of the wedge slider (11). A driving component for driving the connecting plate (12) to move is provided on the top of the fixing bracket (8). An extrusion component is rotatably connected to the inner wall of the fixing bracket (8).

4. A multi-functional test bench for quick clamping of high-pressure hydrogen valves according to claim 3, characterized in that: The driving component includes a limiting plate (9), which is fixedly connected to the top of the fixed bracket (8). The limiting plate (9) is in contact with the top of the wedge slider (11). The inner wall of the limiting plate (9) is threadedly connected to a threaded rod (10), and one end of the threaded rod (10) is rotatably connected to the connecting plate (12).

5. A multi-functional test bench for quick clamping of high-pressure hydrogen valves according to claim 4, characterized in that: The extrusion component includes a rotating rod (13), both ends of which are rotatably connected to the inner wall of the fixed bracket (8). A bending block (14) is fixedly connected to the top of the rotating rod (13). A limiting groove (15) matching the edge of the placement plate (7) is opened on the side wall of the bending block (14). A spring (16) is fixedly connected between the bending block (14) and the connecting plate (12).

6. A multi-functional test bench for quick clamping of high-pressure hydrogen valves according to claim 5, characterized in that: The top surface of the placement plate (7) is provided with an installation hole, and a valve (17) is fixedly connected inside the installation hole. The valve (17) is connected to the inside of the placement frame (2).

Images