A valve pressure testing device
By designing components such as the placement plate, valve placement seat, stable clamping structure, and studs in the valve pressure testing device, the cumbersome operation and alignment problems of traditional valve pressure testing are solved, achieving precise alignment and reliable clamping, thus improving pressure testing efficiency and sealing performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-08-11
- Publication Date
- 2026-07-07
AI Technical Summary
Traditional valve pressure testing methods are cumbersome and inefficient, making it difficult to accurately align the interface centers, which affects sealing performance and testing efficiency.
A valve pressure testing device was designed, comprising components such as a placement plate, a valve placement seat, a stabilizing clamping structure, a movable mounting part, and studs. The height of the pressure testing pump can be precisely adjusted through the cooperation of the studs and the movable plate, and the reliable clamping and precise alignment of the valve are ensured through the design of the stabilizing clamping structure and the rubber pad clamping plate.
It enables easy and precise height and position alignment during valve pressure testing, improving operational efficiency and sealing performance, and ensuring the reliability and safety of the test.
Smart Images
Figure CN224471444U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of valve manufacturing technology, specifically a valve pressure testing device. Background Technology
[0002] As a critical control component in fluid transport systems, the reliability of valves' sealing performance is paramount. Valves must undergo pressure testing (referred to as "pressure testing") during production and before leaving the factory to verify that their valve body strength, sealing performance, and other properties meet design requirements, preventing safety accidents such as leakage or rupture during use.
[0003] The valves under test come in a wide variety of specifications and models (e.g., different nominal diameters, different flange heights), resulting in significant differences in their inlet center heights. However, the output height of the pressure testing pump is usually fixed. Traditional methods often require manually elevating the valve or pressure testing pump, or using simple supports for adjustment. This is cumbersome, inefficient, and makes it difficult to accurately ensure interface center alignment, affecting connection sealing and testing efficiency. Utility Model Content
[0004] In view of the problems existing in the prior art, this utility model discloses a valve pressure testing device. The technical solution adopted includes a placement plate, a valve placement seat, a valve to be tested, and a pressure testing pump. All of these are conventional components. The selection of the pressure testing valve is also flexible and can be made by those skilled in the art according to the actual situation when conducting valve pressure testing, without the need for creative effort. The remaining parts include a stabilizing clamping structure, a left-side mounting groove, a movable mounting part, a mounting block, a left-side mounting plate, a vertical shaft, a movable plate, and studs. The valve placement seat is fixed at the center of the placement plate. The valve to be tested is placed on the valve placement seat and fixed by the stabilizing clamping structure set on the placement plate. The stabilizing clamping structure can be adjusted according to the specifications of the valve to be tested for adaptive clamping operation. The left side of the placement plate has a left-side mounting groove at the front and rear ends, in which a movable mounting part is set to install the mounting block. The left-side mounting plate is fixedly connected to the mounting block. Four vertical shafts are fixed on the mounting plate, and four vertical through holes are opened on the movable plate. The movable plate is movably fitted onto the vertical shafts through the through holes. A stud is installed at the center of the left mounting plate. The upper end of the stud is connected to the bottom surface of the movable plate through a rotating structure. Specifically, the rotating structure has a stepped arc-shaped groove with a T-shaped cross-section on the bottom surface of the movable plate. A column block with a T-shaped cross-section is fixed at the top of the stud, and the column block fits into the stepped arc-shaped groove. The test pump is detachably fixed on the movable plate. The detachable installation method adopts a common mechanical connection structure, such as bolts to splice the pump body base and the movable plate. Manually rotating the bottom end of the stud causes the stud to rotate. With its matching with the left mounting plate, it can move up and down to adjust the height of the movable plate so that the output end of the test pump can be aligned with the left side of the valve to be tested at the same height for easy splicing. By moving the mounting part, the test pump is moved to the right and spliced with the left side inlet of the valve to be tested through a flange.
[0005] As a preferred technical solution of this utility model, the stable clamping structure includes a right front-rear groove, a front-rear rotating shaft, a front knob, a locking structure, a left front-rear groove, a front-rear fixed shaft, a bending mounting bracket, and a clamping plate. The left and right sides of the placement plate are respectively opened with a left front-rear groove and a right front-rear groove. A bearing is provided on the rear inner wall of the right front-rear groove. The rear end of the front-rear rotating shaft is fitted with the bearing. The front end extends from the through hole on the front side wall of the right front-rear groove and the front knob is fixed at the extended end. A front-rear fixed shaft is fixed in the left front-rear groove. The front-rear rotating shaft has symmetrical threaded grooves. The lower end of the bending mounting bracket is respectively installed with the threaded groove and is movably fitted with the front-rear fixed shaft. A clamping plate is fixed on the inner side of the bending mounting bracket. A locking structure is provided at the front knob to lock the state of the front knob.
[0006] As a preferred technical solution of this utility model, the locking structure includes an outer wall groove and a locking screw. Several outer wall grooves are distributed on the arc-shaped outer wall of the front knob. A threaded hole is opened on the front side of the placement plate. The locking screw passes through the outer wall groove and is fitted into the threaded hole to lock the front knob.
[0007] As a preferred technical solution of this utility model, the movable mounting part includes a left horizontal rotating shaft, a left knob, and a left horizontal fixed shaft. A bearing is provided inside the right side of the front left mounting groove. The right end of the left horizontal rotating shaft is fitted with the bearing, and the left end extends out from the left through hole of the left mounting groove and the left knob is fixed at the extended end. The outer wall of the left horizontal rotating shaft has a threaded groove. The left horizontal fixed shaft is fixed in the rear left mounting groove. Two mounting blocks are fitted into the left mounting groove and are respectively fitted into the threaded groove on the outside of the left horizontal rotating shaft, and are movably fitted with the left horizontal fixed shaft.
[0008] As a preferred technical solution of this utility model, a rubber pad is fixed on the inner side of the card plate.
[0009] The beneficial effects of this utility model are as follows: Through the coordinated design of the stud, vertical shaft, movable plate and rotating structure, the height of the movable plate (carrying the test pump) can be easily and accurately adjusted by simply rotating the stud. The movable mounting part allows the mounting block for installing the test pump and the left mounting plate to move smoothly in the horizontal direction (left and right). The stable clamping structure drives the two side clamping plates to move synchronously in opposite directions by rotating the front knob. With the design of the clamping plates that can be replaced or have built-in rubber pads, it can stably and reliably clamp and fix valves of different shapes and sizes. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of this utility model;
[0011] Figure 2 This is a top view of the structure of this utility model;
[0012] Figure 3 This is a bottom view of the structure of this utility model.
[0013] In the diagram: 1. Placement plate; 2. Valve placement seat; 3. Valve to be tested; 4. Right front-to-back groove; 5. Front-to-back rotating shaft; 6. Front knob; 6. Outer wall groove; 61. Locking screw; 62. Left front-to-back groove; 7. Front-to-back fixed shaft; 8. Bending mounting bracket; 9. Clamping plate; 10. Left mounting groove; 11. Left horizontal rotating shaft; 111. Left knob; 112. Left horizontal fixed shaft; 113. Mounting block; 12. Left mounting plate; 13. Vertical shaft; 14. Movable plate; 15. Stud; 151. Pressure testing pump; 16. Detailed Implementation
[0014] Example 1
[0015] like Figures 1 to 3 As shown, this utility model discloses a valve pressure testing device. The technical solution includes a placement plate 1, a valve placement seat 2, a valve to be tested 3, a pressure testing pump 16, a stabilizing clamping structure, a left-side mounting groove 11, a movable mounting part, a mounting block 12, a left-side mounting plate 13, a vertical shaft 14, a movable plate 15, and a stud 151. The valve placement seat 2 is fixed at the center of the placement plate 1. The valve to be tested 3 is placed on the valve placement seat 2 and fixed by the stabilizing clamping structure on the placement plate 1. The left-side mounting groove 11 is opened at the front and rear ends of the left side of the placement plate 1, and a movable mounting part is set in it. The mounting block 12 is installed on the mounting block 12. A left mounting plate 13 is fixedly connected to the mounting block 12. Four vertical shafts 14 are fixed on the left mounting plate 13. The movable plate 15 has four vertical through holes and is movably fitted onto the vertical shafts 14 through the through holes. A stud 151 is installed at the center of the left mounting plate 13. The upper end of the stud 151 is connected to the bottom surface of the movable plate 15 through a rotating structure. Specifically, the rotating structure has a stepped arc-shaped groove with a T-shaped cross section on the bottom surface of the movable plate. A column block with a T-shaped cross section is fixed at the top of the stud 151 and fits into the stepped arc-shaped groove.
[0016] As a preferred technical solution of this utility model, the specific arrangement of the stable clamping structure is as follows: a left front-rear groove 7 and a right front-rear groove 4 are respectively opened on the left and right sides of the placement plate 1. A bearing is provided on the rear inner wall of the right front-rear groove 4. The rear end of the front-rear rotating shaft 5 is fitted with the bearing, and the front end extends out from the through hole on the front side wall of the right front-rear groove 4 and the front end knob 6 is fixed at the extended end. A front-rear fixed shaft 8 is fixed in the left front-rear groove 7. The front-rear rotating shaft 5 has symmetrical threaded grooves. The lower end of the bent mounting bracket 9 is fitted with the threaded grooves and is movably fitted with the front-rear fixed shaft 8. A clamping plate 10 is fixed on the inner side of the bent mounting bracket 9, and a locking structure is provided at the front end knob 6.
[0017] As a preferred technical solution of this utility model, the locking structure includes an outer wall groove 61 and a locking screw 62. Several outer wall grooves 61 are distributed on the arc-shaped outer wall of the front knob 6. A threaded hole is opened on the front side of the placement plate 1. The locking screw 62 passes through the outer wall groove 61 and is fitted into the threaded hole to lock the front knob 6.
[0018] As a preferred technical solution of this utility model, the movable mounting part includes a left horizontal rotating shaft 111, a left knob 112, and a left horizontal fixed shaft 113. A bearing is provided inside the right side of the front left mounting groove 11. The right end of the left horizontal rotating shaft 111 is fitted with the bearing, and the left end extends out from the left through hole of the left mounting groove 11 and the left knob 112 is fixed at the extended end. The outer wall of the left horizontal rotating shaft 111 has a threaded groove. The left horizontal fixed shaft 113 is fixed in the rear left mounting groove 11. The two mounting blocks 12 are both fitted in the left mounting groove 11 and are respectively fitted with the threaded groove on the outside of the left horizontal rotating shaft 111 and are movably fitted with the left horizontal fixed shaft 113.
[0019] As a preferred technical solution of this utility model, a rubber pad is fixed on the inner side of the card plate 10.
[0020] The working principle of this utility model is as follows: In use, the valve to be tested is placed in the valve placement seat at the center of the placement plate. Rotating the front knob causes the front knob to drive the fixed front-rear rotating shaft to rotate within the front-rear groove on the right side. Because the front-rear rotating shaft has threaded grooves in opposite directions, during rotation, the two bent mounting brackets that mate with the threaded grooves will move synchronously in opposite directions along the front-rear rotating shaft (i.e., simultaneously clamping inwards or loosening outwards). The inner side of the bent mounting bracket is fixed with a clamping plate (optionally with a rubber pad). Its movement trajectory is constrained by the fixed front-rear shaft in the left front-rear groove, maintaining stable translation. Rotating the front knob causes the clamping plates on both sides to move inwards until they are tightly fitted against both sides of the valve body to be tested, thus firmly clamping the valve in the valve placement seat. At this point, the front knob is locked by a locking structure (the locking screw is screwed into a groove on the outer wall of the front knob and pressed against the threaded hole on the front side of the mounting plate) to prevent it from loosening due to vibration during the test and to ensure the reliability of the clamping. The test pressure pump is fixedly mounted on the movable plate by a detachable method (such as bolts). The bottom end of the stud is manually rotated (usually equipped with a handwheel or handle). The stud is threaded to the center of the left mounting plate (for example, the center of the left mounting plate has an internal threaded hole or a nut). When the stud rotates, it will rise or fall relative to the left mounting plate under the action of the thread. The top of the stud is connected to the bottom surface of the movable plate by a rotating structure (the cooperation of the T-shaped column block and the stepped arc groove). This structure allows the stud to rotate freely while simultaneously transmitting its axial vertical movement to the movable plate without obstruction. The movable plate is movably fitted onto four vertical shafts through four through holes. These vertical shafts are fixed to the left mounting plate, serving as guides and stabilizers. This ensures that the movable plate (along with the test pump) can only move smoothly vertically without swaying. By rotating the stud, the height of the movable plate and the test pump can be precisely adjusted so that the center height of the test pump's output end is perfectly aligned with the center height of the left inlet flange of the valve under test. After achieving height alignment, the output end of the test pump needs to be moved horizontally towards the inlet of the valve under test so that the two... The flanges are tightly fitted by turning the left knob. Push the output end of the test pump horizontally towards the left inlet of the valve under test until the flanges are precisely aligned and in tight contact. After the output end of the test pump and the inlet of the valve under test are precisely aligned and tightly fitted in both height and horizontal position, use standard fasteners such as bolts to seal the flange connection. Start the test pump and inject the pressurized medium (such as water or oil) into the valve under test. Perform the strength test and sealing performance test of the valve according to the specified test procedure and pressure level. The options for the test pump and the power supply control method are all conventional technical solutions, so they will not be described in detail.
[0021] Components not described in detail in this article are existing technologies.
[0022] While the specific embodiments of this utility model have been described in detail above, this utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model. Modifications or variations that do not involve creative labor are still within the protection scope of this utility model.
Claims
1. A valve pressure testing device, comprising a placement plate (1), a valve placement seat (2), a valve to be tested (3), and a pressure testing pump (16), characterized in that: It includes a stabilizing clamping structure, a left mounting groove (11), a movable mounting part, a mounting block (12), a left mounting plate (13), a vertical shaft (14), a movable plate (15), and a stud (151); a valve placement seat (2) is fixed at the center of the placement plate (1), and the valve (3) to be tested is placed on the valve placement seat (2) and fixed by the stabilizing clamping structure provided on the placement plate (1); the left mounting groove (11) is opened at the front and rear ends of the left side of the placement plate (1), and a mounting block (12) is set therein. The movable mounting unit is used to install the mounting block (12); a left mounting plate (13) is fixedly connected to the mounting block (12), and four vertical shafts (14) are fixed on the left mounting plate (13). The movable plate (15) has four vertical through holes and is movably fitted onto the vertical shafts (14) through the through holes; a stud (151) is installed at the center of the left mounting plate (13), and the upper end of the stud (151) is connected to the bottom surface of the movable plate (15) through a rotating structure.
2. The valve pressure testing device according to claim 1, characterized in that: The stabilizing clamping structure includes a right front-rear groove (4), a front-rear rotating shaft (5), a front knob (6), a locking structure, a left front-rear groove (7), a front-rear fixed shaft (8), a bending mounting bracket (9), and a clamping plate (10). The left and right sides of the placement plate (1) are respectively provided with a left front-rear groove (7) and a right front-rear groove (4). A bearing is provided on the rear inner wall of the right front-rear groove (4). The rear end of the front-rear rotating shaft (5) is fitted with the bearing. The front end extends from the through hole on the front side wall of the right front-rear groove (4) and the front knob (6) is fixed at the extended end. The front-rear fixed shaft (8) is fixed in the left front-rear groove (7). The front-rear rotating shaft (5) is symmetrically provided with threaded grooves. The lower end of the bending mounting bracket (9) is fitted with the threaded grooves and is movably fitted with the front-rear fixed shaft (8). A clamping plate (10) is fixed on the inner side of the bending mounting bracket (9). A locking structure is provided at the front knob (6).
3. The valve pressure testing device according to claim 2, characterized in that: The locking structure includes an outer wall groove (61) and a locking screw (62); several outer wall grooves (61) are distributed on the arc outer wall of the front knob (6), and a threaded hole is opened on the front side of the placement plate (1). The locking screw (62) passes through the outer wall groove (61) and is fitted in the threaded hole to lock the front knob (6).
4. The valve pressure testing device according to claim 1, characterized in that: The movable mounting part includes a left transverse rotating shaft (111), a left knob (112), and a left transverse fixed shaft (113); a bearing is provided inside the right side of the left mounting groove (11) on the front side, the right end of the left transverse rotating shaft (111) is fitted with the bearing, the left end extends from the left through hole of the left mounting groove (11) and the left knob (112) is fixed at the extended end, and the outer wall of the left transverse rotating shaft (111) has a threaded groove; the left transverse fixed shaft (113) is fixed in the left mounting groove (11) on the rear side, and the two mounting blocks (12) are fitted in the left mounting groove (11) and respectively fitted with the threaded groove outside the left transverse rotating shaft (111), and are movably fitted with the left transverse fixed shaft (113).
5. A valve pressure testing device according to claim 2, characterized in that: A rubber pad is fixed to the inner side of the card plate (10).
6. A valve pressure testing device according to claim 1, characterized in that: The rotating structure has a stepped arc-shaped groove with a T-shaped cross-section on the bottom surface of the movable plate, and a column block with a T-shaped cross-section is fixed at the top of the stud (151). The column block is placed in the stepped arc-shaped groove.