Valve pressure testing device
By designing a detection system for valve pressure testing devices, using water and pressure detectors combined with the design of sealing plates and mounting plates, the problem of difficulty in accurately detecting valve leakage locations in the existing technology is solved, and the valve is airtight. comprehensive detection and accurate location of leakage.
Patent Information
- Application Number
- CN202421256120.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-06-04
AI Technical Summary
Existing valve pressure testing devices are difficult to accurately detect the position of valve leakage, and the leakage source cannot be effectively located through airtight detection alone.
A valve pressure test device is designed, which uses the water in the detection box to detect whether there are bubbles at the valve stem, and detects the air pressure inside the valve through a pressure detector. Combined with the sealing treatment of the sealing plate and the mounting plate, the valve flange can be accurately detected Airtightness of joints.
It achieves accurate detection of valve leakage locations and can determine the air tightness of valve stems, valve discs and flange connections, thereby effectively locating and solving leakage problems.
Smart Images
Figure CN222379286U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pressure testing devices, in particular to a valve pressure testing device. Background Art
[0002] The valve pressure test device is mainly used for valve leakage test, valve body strength test and other functional tests, and is mainly used for air pressure or liquid pressure test of industrial metal valves.
[0003] Common valve pressure testing devices generally test the sealing performance of the valve by closing the valve and then outputting gas pressure into the valve, observing the working status and performance of the valve under a specific test pressure. However, after the gas is injected into the valve, the air tightness of the valve is generally detected by the pressure change in the valve, and there are many places where the valve is prone to leakage. As a result, it is difficult to accurately detect the location of the valve leakage through air tightness testing alone. Utility Model Content
[0004] 1. Technical issues to be solved
[0005] In view of the deficiencies in the prior art, the utility model provides a valve pressure testing device to solve the problem that the valve is prone to leakage in many places as mentioned in the above background technology, resulting in difficulty in accurately detecting the location of the valve leakage only through air tightness testing.
[0006] (II) Technical solution
[0007] To achieve the above purpose, the utility model provides the following technical solution: a valve pressure testing device, comprising:
[0008] A detection box, wherein the inner cavity of the detection box is injected with water, a stepper motor is installed on the lower surface of the top plate of the detection box, a screw rod is coaxially installed on the rotor of the stepper motor, and a detection plate is screwed on the surface of the screw rod;
[0009] A mounting frame is arranged on the left side of the upper surface of the detection plate, an adjusting rod is screwed on the upper surface of the mounting frame, an adjusting block is installed on the bottom end of the adjusting rod through a bearing, and a mounting plate is arranged on the right side of the adjusting block;
[0010] The air pump is arranged on the right side of the upper surface of the detection box. An air injection pipe is installed at the air outlet end of the air pump. A sealing plate is provided at the left end of the air injection pipe. A pressure detector is installed on the right side of the sealing plate.
[0011] Preferably, sliders are installed at the four corners on both sides of the detection plate, and slide rails are welded at the four corners of the inner cavity of the detection box. The sliders are embedded in the inner cavity of the slide rails. The sliders and the slide rails prevent the detection plate from shifting when moving.
[0012] Preferably, fixing plates are installed on the right side of the sealing plate and the left end of the gas injection pipe, and fixing rods are evenly screwed between the fixing plates. The sealing plate can be disassembled by removing the fixing rods from the surface of the fixing plates.
[0013] Preferably, a limit block is installed on the left side of the adjustment block, a limit slot is provided on the right side of the mounting frame, the limit block is inserted into the inner cavity of the limit slot, and the limit block and the limit slot enable the adjustment block to move vertically.
[0014] Preferably, mounting edges are installed on the upper surface and the lower surface of the adjusting block, and a mounting rod is screwed between the mounting edge and the mounting plate. The mounting plate can be disassembled by removing the mounting rod from the mounting edge.
[0015] Preferably, threaded holes are evenly formed on the surfaces of the mounting plate and the sealing plate, and ventilation holes are formed in the middle of the sealing plate and the fixing plate, so that the air injection pipe can be injected into the valve through the sealing plate.
[0016] Beneficial Effects
[0017] Compared with the prior art, the utility model provides a valve pressure testing device, which has the following beneficial effects:
[0018] The valve pressure testing device, with the additional mounting plate and sealing plate, can seal the flange connection of the valve. By using the water in the detection box to detect whether there are bubbles at the valve stem, the air tightness of the valve stem can be determined. By detecting the air pressure inside the valve through a pressure detector, the air tightness of the valve disc can be determined. By opening the valve disc in the valve and detecting whether bubbles are generated at the flange connection of the valve, the air tightness of the flange connection can be detected, thereby accurately detecting the location where the valve leaks. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the structure of the utility model;
[0020] Figure 2 This is a schematic diagram of the structure of the detection board of the utility model;
[0021] Figure 3 This is a schematic diagram of the structure of the sealing plate of the utility model;
[0022] Figure 4 It is a cross-sectional structural schematic diagram of the mounting frame of the utility model;
[0023] Figure 5 It is a structural schematic diagram of the mounting plate of the utility model.
[0024] In the figure: 1. detection box; 2. stepper motor; 3. screw; 301. detection plate; 4. mounting frame; 5. adjustment rod; 6. adjustment block; 7. mounting plate; 8. air pump; 9. air injection pipe; 10. sealing plate; 101. pressure detector; 11. slider; 12. slide rail; 13. fixing plate; 14. fixing rod; 15. limit block; 16. limit groove; 17. mounting edge; 18. mounting rod. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] The utility model provides a technical solution, a valve pressure testing device, please refer to Figure 1 , comprising a detection box 1, the inner cavity of the detection box 1 is injected with water, a stepper motor 2 is installed on the lower surface of the top plate of the detection box 1, a screw rod 3 is coaxially installed on the rotor of the stepper motor 2, and a detection plate 301 is screwed on the surface of the screw rod 3;
[0027] The mounting frame 4 is arranged on the left side of the upper surface of the detection plate 301. The upper surface of the mounting frame 4 is screwed with an adjustment rod 5. Figure 4 , an adjusting block 6 is installed at the bottom end of the adjusting rod 5 through a bearing, and a mounting plate 7 is provided on the right side of the adjusting block 6;
[0028] See also Figure 1 The air pump 8 is arranged on the right side of the upper surface of the detection box 1. The air outlet of the air pump 8 is equipped with an air injection pipe 9. Figure 3 , a sealing plate 10 is provided at the left end of the gas injection pipe 9, and a pressure detector 101 is installed on the right side of the sealing plate 10;
[0029] Rotating the adjusting rod 5 can drive the adjusting block 6 to move up and down, thereby driving the mounting plate 7 to move up and down, and the mounting plate 7 can be adjusted to a suitable height to connect with the valve, so as to install the valve, and the sealing plate 10 is connected to the right side of the valve, and the valve can be sealed in cooperation with the mounting plate 7. By using the water in the detection box 1 to detect whether there are bubbles at the valve stem, the air tightness of the valve stem can be determined, and the air pressure inside the valve is detected by the pressure detector 101, so the air tightness of the valve disc can be determined, and the valve disc in the valve can be opened to detect whether bubbles are generated at the flange connection of the valve, and the air tightness of the flange connection can be detected, so that the location where the valve leaks can be accurately detected.
[0030] See also Figure 2Slide blocks 11 are installed at the four corners of both sides of the detection plate 301. Figure 1 Slide rails 12 are welded at the four corners of the inner cavity of the detection box 1, and the sliders 11 are embedded in the inner cavity of the slide rails 12. The sliders 11 and the slide rails 12 prevent the detection plate 301 from shifting when moving.
[0031] See also Figure 3 A fixing plate 13 is installed on the right side of the sealing plate 10 and the left end of the gas injection pipe 9, and fixing rods 14 are evenly screwed between the fixing plates 13. The sealing plate 10 can be disassembled by removing the fixing rods 14 from the surface of the fixing plates 13.
[0032] See also Figure 4 A limit block 15 is installed on the left side of the adjustment block 6, and a limit slot 16 is provided on the right side of the mounting frame 4. The limit block 15 is inserted into the inner cavity of the limit slot 16. The limit block 15 and the limit slot 16 enable the adjustment block 6 to move vertically.
[0033] See also Figure 5 The upper and lower surfaces of the adjusting block 6 are both provided with mounting edges 17 , and a mounting rod 18 is screwed between the mounting edge 17 and the mounting plate 7 . The mounting plate 7 can be disassembled by removing the mounting rod 18 from the mounting edge 17 .
[0034] The surfaces of the mounting plate 7 and the sealing plate 10 are uniformly provided with threaded holes. Figure 3 The sealing plate 10 and the fixing plate 13 are both provided with ventilation holes in the middle, so that the air injection pipe 9 can be injected into the valve through the sealing plate 10 .
[0035] The device first rotates the adjusting rod 5 to drive the adjusting block 6 to move up and down, thereby driving the mounting plate 7 to move up and down, and adjusting the mounting plate 7 to a suitable height to connect with the valve, so as to install the valve, and connecting the sealing plate 10 to the right side of the valve, and cooperating with the mounting plate 7 to seal the valve, and then starting the stepper motor 2 to drive the screw rod 3 to rotate, thereby driving the detection plate 301 to move downward into the inner cavity of the detection box 1, and starting the air pump 8 to inject gas into the valve, and using the water in the detection box 1 to detect whether there is any water on the surface of the valve. Bubbles are generated. If bubbles are generated at the valve stem, it can be determined that the air tightness at the valve stem is poor. The air pressure inside the valve is detected by the pressure detector 101. If the air pressure inside the valve decreases, it can be determined that the air tightness of the valve disc in the valve is poor. Finally, the stepper motor 2 is started to drive the detection plate 301 to move upward, which can facilitate the staff to open the valve disc and then place the valve in the detection box 1. If bubbles are generated at the flange connection of the valve, it can be detected that the air tightness of the flange connection is poor, thereby accurately detecting the location where the valve leaks.
[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0037] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A valve pressure testing device, characterized in that: include: A detection box (1), wherein the inner cavity of the detection box (1) is injected with water, a stepper motor (2) is mounted on the lower surface of the top plate of the detection box (1), a screw rod (3) is coaxially mounted on the rotor of the stepper motor (2), and a detection plate (301) is screwed onto the surface of the screw rod (3); A mounting frame (4) is arranged on the left side of the upper surface of the detection plate (301); an adjusting rod (5) is screwed onto the upper surface of the mounting frame (4); an adjusting block (6) is mounted on the bottom end of the adjusting rod (5) via a bearing; a mounting plate (7) is arranged on the right side of the adjusting block (6); An air pump (8) is arranged on the right side of the upper surface of the detection box (1); an air injection pipe (9) is installed at the air outlet end of the air pump (8); a sealing plate (10) is provided at the left end of the air injection pipe (9); and a pressure detector (101) is installed on the right side of the sealing plate (10).
2. A valve pressure testing device according to claim 1, characterized in that: Slide blocks (11) are installed at the four corners on both sides of the detection plate (301), slide rails (12) are welded at the four corners of the inner cavity of the detection box (1), and the slide blocks (11) are embedded in the inner cavity of the slide rails (12).
3. A valve pressure testing device according to claim 1, characterized in that: The right side of the sealing plate (10) and the left end of the gas injection pipe (9) are both installed with fixing plates (13), and fixing rods (14) are evenly screwed between the fixing plates (13).
4. A valve pressure testing device according to claim 1, characterized in that: A limit block (15) is installed on the left side of the adjustment block (6), a limit slot (16) is provided on the right side of the mounting frame (4), and the limit block (15) is inserted into the inner cavity of the limit slot (16).
5. A valve pressure testing device according to claim 1, characterized in that: The upper surface and the lower surface of the adjustment block (6) are both provided with a mounting edge (17), and a mounting rod (18) is screwed between the mounting edge (17) and the mounting plate (7).
6. A valve pressure testing device according to claim 3, characterized in that: The surfaces of the mounting plate (7) and the sealing plate (10) are evenly provided with threaded holes, and the middle parts of the sealing plate (10) and the fixing plate (13) are both provided with ventilation holes.