CN113483963A - Automatic detection device for air tightness of valve - Google Patents
Automatic detection device for air tightness of valve Download PDFInfo
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- CN113483963A CN113483963A CN202110742679.1A CN202110742679A CN113483963A CN 113483963 A CN113483963 A CN 113483963A CN 202110742679 A CN202110742679 A CN 202110742679A CN 113483963 A CN113483963 A CN 113483963A
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- 238000001514 detection method Methods 0.000 title claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000005192 partition Methods 0.000 claims description 5
- 230000007547 defect Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
- G01M3/08—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds
- G01M3/086—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds for valves
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
Valve gas tightness automatic checkout device for solve the problem that the valve gas leakage is difficult to detect when less. The automatic control valve comprises a rack, wherein a plurality of pairs of upper plugs and lower plugs which are arranged up and down are arranged in an inner cavity of the rack, the upper plugs and the lower plugs are of conical structures, the tips of the upper plugs and the lower plugs are arranged oppositely, an upper sealing gasket is wrapped on the outer wall of the upper plug, a lower sealing gasket is wrapped on the outer wall of the lower plug, when the automatic control valve is used, the valve is arranged between the upper plugs and the lower plugs, the tips of the upper plugs and the lower plugs are enabled to extend into a valve interface, and a driving mechanism for driving the upper plugs to move down is arranged on the rack; an air inlet unit is arranged at the top of the rack and used for adding air into the upper plug; the bottom of the rack is provided with a display unit, the display unit comprises a water tank, a plurality of mutually independent water storage cavities are arranged in the water tank, the water storage cavities correspond to the lower plugs one by one, and an exhaust pipe is arranged between the water storage cavities and the lower plugs. The invention can realize the automatic detection of the sealing performance of the valve and has high detection precision.
Description
Technical Field
The invention relates to the technical field of air tightness detection, in particular to an automatic detection device for air tightness of a valve.
Background
The air tightness detection of the valve usually adopts a mode of introducing air into the valve, and the air leakage phenomenon of the valve is distinguished by detecting the pressure in the valve. However, when the air leakage of the valve is small, the pressure change of the pressure gauge is inconvenient to observe due to short-time detection, so that the detection has a leak.
Disclosure of Invention
The invention aims to provide an automatic detection device for the air tightness of a valve, which is used for solving the problem that the detection is difficult when the air leakage of the valve is small.
The technical scheme adopted by the invention for solving the technical problems is as follows: the automatic detection device for the air tightness of the valve is characterized by comprising a rack, wherein a plurality of pairs of upper plugs and lower plugs which are arranged up and down are arranged in an inner cavity of the rack, the upper plugs and the lower plugs are of conical structures, the tips of the upper plugs and the lower plugs are arranged oppositely, the outer wall of each upper plug is wrapped with an upper sealing gasket, the outer wall of each lower plug is wrapped with a lower sealing gasket, the valve is arranged between the upper plugs and the lower plugs when in use, the tips of the upper plugs and the lower plugs are enabled to extend into valve connectors, and a driving mechanism for driving the upper plugs to move down is arranged on the rack;
an air inlet unit is arranged at the top of the rack and used for adding air into the upper plug;
the bottom of the rack is provided with a display unit, the display unit comprises a water tank, a plurality of mutually independent water storage cavities are arranged in the water tank, the water storage cavities correspond to the lower plugs one by one, and an exhaust pipe is arranged between the water storage cavities and the lower plugs.
Furthermore, the rack comprises a top plate, a vertical plate and a base which are sequentially arranged from top to bottom, and the rear sides of the top plate and the base are fixedly contacted with the vertical plate.
Further, a lower mounting block is fixed on the base, and the lower plug is arranged at the top of the lower mounting seat and is fixedly connected with the lower mounting block through threads.
Furthermore, the driving mechanism comprises an air cylinder fixed at the bottom of the top plate, a movable block fixed on a piston rod of the air cylinder, and an upper mounting block fixedly connected with the movable block, wherein the upper mounting block is fixedly connected with the lower plug through threads.
Furthermore, the upper plug and the lower plug are both of a hollow structure, an upper magnet is arranged in the upper plug, and a lower magnet is arranged in the lower plug.
Furthermore, the air inlet unit comprises an air source arranged at the top of the top plate, a main pipe connected with the air source, and an air inlet pipe arranged between the main pipe and the upper plug, wherein a spiral section is arranged on the air inlet pipe.
Furthermore, a sliding rod is fixed at the top of the upper mounting block, the upper part of the sliding rod is arranged in a sliding groove at the bottom of the movable block in a sliding manner, a spring is arranged between the movable block and the upper mounting block, and the spring is sleeved outside the sliding rod.
Furthermore, a plurality of black clapboards are arranged in the water tank, and the inner cavity of the water tank is divided into a plurality of water storage cavities by the clapboards.
Furthermore, the upper sealing gasket and the lower sealing gasket are both conical rubber pieces, and the outer walls of the upper sealing gasket and the lower sealing gasket are in contact with the inner wall of the valve port to realize sealing between the valve and the upper plug and the lower plug.
The invention has the beneficial effects that: the automatic detection device for the air tightness of the valve, provided by the invention, has a simple structure, can clamp and fix a plurality of valves at one time, can keep good sealing performance between the upper and lower plugs and the valve, and can detect the air tightness of the valve by inflating the upper plug. The conical structures of the upper plug and the lower plug and the arrangement of the upper sealing gasket and the lower sealing gasket ensure the sealing property between the upper plug and the lower plug and the valve, the air inlet pipe is arranged to connect the air source and the upper plug together, and the air directly enters the upper plug at the moment. And certain air pressure is applied to the upper plug and is kept, and if the valve leaks air, the air passes through the lower plug and the exhaust pipe and enters the water tank to generate bubbles, so that the visual observation can be realized. Go up the setting of magnet and lower magnet, can adsorb the valve, avoid placing the valve back on lower end cap, the slippage between valve and the end cap down. The invention realizes the automatic detection of the air tightness of the valve and has high detection precision.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a top view of the lower plug;
FIG. 3 is a cross-sectional view of the lower plug;
FIG. 4 is a schematic view of a display unit;
FIG. 5 is a cross-sectional view of the upper plug;
FIG. 6 is a side view of the frame;
FIG. 7 is a schematic gas flow diagram;
FIG. 8 is a schematic view of another embodiment of the upper plug;
FIG. 9 is a partial cross-sectional view of FIG. 8;
in the figure: the air conditioner comprises a machine frame 1, a base 11, a vertical plate 12, a top plate 13, a lower mounting block 2, a lower plug 21, a lower sealing gasket 22, an air outlet 23, a first mounting ring 24, a lower magnet 25, a first mounting cavity 26, an exhaust pipe 3, a water tank 4, a partition plate 41, a water storage cavity 42, water 43, an upper mounting block 5, an upper plug 51, an upper sealing gasket 52, an air inlet 53, a second mounting ring 54, an upper magnet 55, a second mounting cavity 56, a movable block 6, a corrugated pipe 61, a sliding groove 62, a sliding rod 63, a spring 64, an air inlet pipe 7, a spiral section 71, a main pipe 72, an air source 73 and an air cylinder 8.
Detailed Description
As shown in fig. 1 to 9, the present invention mainly includes a frame 1, a lower plug 21, an upper plug 51, an air inlet unit and a display unit, and the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 and 6, the frame 1 is a main body component of the present invention, and includes a top plate 13, a vertical plate 12 and a base 11, which are sequentially disposed from top to bottom, the vertical plate is disposed between the top plate and the base, the top plate and the base are fixedly connected into a whole, and contact points between the vertical plate and the top plate and between the vertical plate and the base are located at the rear sides of the top plate and the base.
The base is provided with a plurality of lower mounting blocks 2 which are arranged at equal intervals, and the lower mounting blocks are fixedly connected with the base. The lower mounting block is of a rectangular structure, a lower plug 21 is arranged at the top of the lower mounting block, as shown in fig. 2 and 3, the lower plug is integrally conical, the upper end of the lower plug is small, the lower end of the lower plug is large, a lower sealing gasket 22 is arranged at the middle upper part of the lower plug, the lower sealing gasket is also of a conical structure with a small upper end and a large lower end, the inner wall of the lower sealing gasket is in contact with the outer wall of the lower plug, and the lower sealing gasket is made of rubber. And a first mounting ring 24 is fixed at the bottom of the lower plug and is in threaded connection with the lower mounting block to realize the mounting and fixing of the lower plug and the lower mounting block. An air outlet 23 is formed in the top of the lower plug and the top of the lower sealing gasket, the lower plug is hollow, the inner cavity of the lower plug is a first installation cavity 26, and a lower magnet 25 is arranged in the first installation cavity. The lower plug is used for sealing a first interface of the valve, and the tip end of the lower plug extends into the valve interface when the lower plug is used, so that the lower sealing gasket is in contact extrusion with the inner wall of the valve interface.
An upper mounting block 5 is arranged above each lower mounting block, the upper mounting block and the lower mounting block have the same structure and shape, as shown in fig. 5, an upper plug 51 is arranged at the bottom of the upper mounting block, the upper plug has a conical structure with a small lower end and a large upper end, and the upper plug is hollow. An upper sealing gasket 52 is arranged at the middle lower part of the upper plug, the upper sealing gasket is also in a conical structure with a large upper end and a small lower end, the inner wall of the upper sealing gasket is fixedly contacted with the outer wall of the upper plug, and the upper sealing gasket is a rubber piece. An air inlet 53 is formed in the bottom of the upper sealing gasket, a second mounting ring 54 is arranged at the top of the upper plug, and the upper plug and the upper mounting block are fixedly connected through threaded connection of the second mounting ring and the upper mounting block. The inner cavity of the upper plug is a second mounting cavity 56, and an upper magnet 55 is arranged in the second mounting cavity. The upper plug is used for plugging the second interface of the valve, the tip end of the upper plug extends into the second interface of the valve when the upper plug is used, the outer wall of the upper sealing gasket is in contact extrusion with the inner wall of the second interface of the valve, and then the second interface of the valve is plugged. When the sealing device is used, the valve is firstly placed between the upper plug and the lower plug, the tip of the lower sealing gasket extends into the first interface of the valve, then the upper plug is driven to move downwards, the tip of the upper sealing gasket extends into the second interface of the valve, the upper plug continues to be driven to move downwards until the upper sealing gasket and the lower sealing gasket are in contact compression with the valve, and sealing is realized between the upper plug and the valve and between the lower plug and the valve at the moment. The cylinder, the movable block and the upper mounting block form a driving mechanism for driving the upper plug to move downwards.
In order to drive the upper plug to move downwards, the bottom of the top plate is fixedly provided with an air cylinder 8, a piston rod of the air cylinder is fixedly connected with a movable block 6, and the movable block is fixed at the top of the upper mounting block.
In order to add air into the valve, an air inlet unit is arranged between the top plate and the upper plug, the air inlet unit comprises an air source 73 fixed on the top plate, a main pipe 72 connected with the air source and an air inlet pipe 7 connected with the main pipe, the first end of the air inlet pipe is connected with the main pipe, and the second end of the air inlet pipe penetrates through the movable block, the upper mounting block and the upper plug and then is communicated with the air inlet. In order to ensure the sealing property, the second end of the air inlet pipe is fixedly contacted with the bottom of the upper plug. When the valve is used, air is added into the upper plug through the air source, and then the air enters the valve. If the valve has good air tightness, air cannot pass through the ball valve of the valve and then enter the lower plug; if the valve has the air leakage defect, air can pass through the ball valve of the valve and then enter the lower plug. The air inlet pipe penetrates through the upper magnet and then is connected with the air inlet, and the exhaust pipe penetrates through the lower magnet and then is connected with the air outlet.
In order to detect the air entering the lower plug, a display unit is arranged on the base, as shown in fig. 4, the display unit comprises a water tank 4 arranged at the top of the base, a plurality of partition plates 41 arranged inside the water tank, and an exhaust pipe 3 arranged between the air outlet and the water tank, the inner cavity of the water tank is divided into a plurality of water storage cavities 42 which are independent of each other by the arrangement of the partition plates, and water 43 is filled in the water storage cavities. The baffle is black to avoid the mutual interference between different water storage chambeies when observing. The pipe diameter of the exhaust pipe is small, so that when a small amount of air enters the lower plug, the air can smoothly enter the water storage cavity through the exhaust pipe, water bubbles are generated in the water storage cavity, and the air leakage defect of the valve can be indicated.
As shown in fig. 7, when the valve is used, the valve is placed between the upper and lower plugs, then the cylinder is driven to act, so that the upper and lower plugs clamp the valve, the tips of the upper and lower plugs extend into the interface of the valve, and the upper and lower plugs and the valve are sealed. And opening the air source to enable air to enter the valve through the main pipe, the air inlet pipe and the upper plug. If the valve leaks air, air in the upper plug can enter the lower plug and finally enters the water storage cavity through the exhaust pipe to generate bubbles. The air inlet pipe is provided with a spiral section 71 to meet the requirement when the air inlet pipe moves downwards.
In order to avoid the excessive pressure between the upper and lower plugs and the valve after the cylinder moves downwards, as shown in fig. 8 and 9, a pair of slide bars 63 are arranged between the movable block and the upper mounting block, the lower ends of the slide bars are fixedly connected with the upper mounting block, and the upper ends of the slide bars are slidably arranged in a chute 62 at the bottom of the movable block. A corrugated pipe 61 is arranged between the top of the upper mounting block and the bottom of the movable block, and a spring 64 sleeved outside the sliding rod is arranged between the top of the upper mounting block and the bottom of the movable block. After the cylinder drives the movable block to move downwards, the tip of the upper sealing gasket is firstly contacted with the inner wall of the valve interface, then the spring is extruded, and the valve is tightly contacted with the upper sealing gasket and the lower sealing gasket under the action of the spring. The spring is provided with a strain gauge so as to detect the pressure between the valve and the upper and lower plugs. The valves with different sizes should apply corresponding pressures to ensure that the pressures between the upper and lower plugs are proper under the action of good sealing performance between the valves and the upper and lower plugs.
The valve air tightness detection device is simple in structure, can clamp and fix a plurality of valves at one time, can keep good sealing performance between the upper and lower plugs and the valves, and can detect the air tightness of the valves by inflating the upper plugs. The conical structures of the upper plug and the lower plug and the arrangement of the upper sealing gasket and the lower sealing gasket ensure the sealing property between the upper plug and the lower plug and the valve, the air inlet pipe is arranged to connect the air source and the upper plug together, and the air directly enters the upper plug at the moment. And certain air pressure is applied to the upper plug and is kept, and if the valve leaks air, the air passes through the lower plug and the exhaust pipe and enters the water tank to generate bubbles, so that the visual observation can be realized. Go up the setting of magnet and lower magnet, can adsorb the valve, avoid placing the valve back on lower end cap, the slippage between valve and the end cap down. The invention can realize the automatic detection of the air tightness of the valve and has high detection precision.
Claims (9)
1. The automatic detection device for the air tightness of the valve is characterized by comprising a rack, wherein a plurality of pairs of upper plugs and lower plugs which are arranged up and down are arranged in an inner cavity of the rack, the upper plugs and the lower plugs are of conical structures, the tips of the upper plugs and the lower plugs are arranged oppositely, the outer wall of each upper plug is wrapped with an upper sealing gasket, the outer wall of each lower plug is wrapped with a lower sealing gasket, the valve is arranged between the upper plugs and the lower plugs when in use, the tips of the upper plugs and the lower plugs are enabled to extend into valve connectors, and a driving mechanism for driving the upper plugs to move down is arranged on the rack;
an air inlet unit is arranged at the top of the rack and used for adding air into the upper plug;
the bottom of the rack is provided with a display unit, the display unit comprises a water tank, a plurality of mutually independent water storage cavities are arranged in the water tank, the water storage cavities correspond to the lower plugs one by one, and an exhaust pipe is arranged between the water storage cavities and the lower plugs.
2. The automatic detection device for the air tightness of the valve according to claim 1, wherein the machine frame comprises a top plate, a vertical plate and a base which are sequentially arranged from top to bottom, and the rear sides of the top plate and the base are fixedly contacted with the vertical plate.
3. The automatic detection device for the airtightness of the valve according to claim 2, wherein a lower mounting block is fixed on the base, and the lower plug is arranged at the top of the lower mounting seat and is fixedly connected with the lower mounting block through a screw thread.
4. The automatic detection device for the airtightness of the valve according to claim 3, wherein the driving mechanism comprises an air cylinder fixed at the bottom of the top plate, a movable block fixed on a piston rod of the air cylinder, and an upper mounting block fixedly connected with the movable block, and the upper mounting block is fixedly connected with the lower plug through a thread.
5. The automatic detecting device for the airtightness of the valve according to claim 1, wherein the upper and lower plugs are both hollow, an upper magnet is provided in the upper plug, and a lower magnet is provided in the lower plug.
6. The automatic detecting device for the airtightness of the valve according to claim 1, wherein the air inlet unit comprises an air source arranged at the top of the top plate, a main pipe connected with the air source, and an air inlet pipe arranged between the main pipe and the upper plug, and the air inlet pipe is provided with a spiral section.
7. The automatic detecting device for the airtightness of the valve according to claim 1, wherein a slide rod is fixed to the top of the upper mounting block, the upper portion of the slide rod is slidably disposed in a slide groove at the bottom of the movable block, a spring is disposed between the movable block and the upper mounting block, and the spring is sleeved outside the slide rod.
8. The automatic detecting device for the airtightness of the valve according to claim 1, wherein a plurality of black partition plates are provided in the water tank, and the partition plates are provided to divide the inner cavity of the water tank into a plurality of water storage cavities.
9. The automatic detecting device for the airtightness of the valve according to claim 1, wherein the upper and lower gaskets are tapered rubber members, and the outer walls of the upper and lower gaskets are in contact with the inner wall of the valve port to achieve the sealing between the valve and the upper and lower plugs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110742679.1A CN113483963A (en) | 2021-07-01 | 2021-07-01 | Automatic detection device for air tightness of valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110742679.1A CN113483963A (en) | 2021-07-01 | 2021-07-01 | Automatic detection device for air tightness of valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113483963A true CN113483963A (en) | 2021-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110742679.1A Pending CN113483963A (en) | 2021-07-01 | 2021-07-01 | Automatic detection device for air tightness of valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN113483963A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117782445A (en) * | 2023-11-21 | 2024-03-29 | 江苏泰阀阀门科技有限公司 | Valve gas tightness detection device |
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| CN202814651U (en) * | 2012-09-08 | 2013-03-20 | 卓旦春 | Dry test machine used for valve seal test |
| CN203516829U (en) * | 2013-09-28 | 2014-04-02 | 天津凯发阀门有限公司 | Conical diversion type high-gas-tightness manual valve |
| CN206876359U (en) * | 2017-03-27 | 2018-01-12 | 广东茂化建集团有限公司 | A kind of valve air-tightness automatic detection device |
| KR20180000746U (en) * | 2016-09-05 | 2018-03-14 | 대우조선해양 주식회사 | Apparatus for sealing test of industrial valve |
| CN208621258U (en) * | 2018-07-18 | 2019-03-19 | 天津鸿瑞橡胶有限公司 | A kind of rubber valve leakage detection apparatus |
| CN210625965U (en) * | 2019-09-09 | 2020-05-26 | 凌云工业股份有限公司汽车零部件制造分公司 | Device for detecting rivet air tightness of battery shell |
| CN111397816A (en) * | 2020-05-06 | 2020-07-10 | 山东万吉塑胶有限公司 | PE valve air tightness test device |
| CN112254882A (en) * | 2020-10-25 | 2021-01-22 | 刘巨光 | Rubber hose water tightness test equipment |
-
2021
- 2021-07-01 CN CN202110742679.1A patent/CN113483963A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1362988A1 (en) * | 1985-11-26 | 1987-12-30 | Украинская сельскохозяйственная академия | Device for checking hermetic sealing of pipes |
| CN202814651U (en) * | 2012-09-08 | 2013-03-20 | 卓旦春 | Dry test machine used for valve seal test |
| CN203516829U (en) * | 2013-09-28 | 2014-04-02 | 天津凯发阀门有限公司 | Conical diversion type high-gas-tightness manual valve |
| KR20180000746U (en) * | 2016-09-05 | 2018-03-14 | 대우조선해양 주식회사 | Apparatus for sealing test of industrial valve |
| CN206876359U (en) * | 2017-03-27 | 2018-01-12 | 广东茂化建集团有限公司 | A kind of valve air-tightness automatic detection device |
| CN208621258U (en) * | 2018-07-18 | 2019-03-19 | 天津鸿瑞橡胶有限公司 | A kind of rubber valve leakage detection apparatus |
| CN210625965U (en) * | 2019-09-09 | 2020-05-26 | 凌云工业股份有限公司汽车零部件制造分公司 | Device for detecting rivet air tightness of battery shell |
| CN111397816A (en) * | 2020-05-06 | 2020-07-10 | 山东万吉塑胶有限公司 | PE valve air tightness test device |
| CN112254882A (en) * | 2020-10-25 | 2021-01-22 | 刘巨光 | Rubber hose water tightness test equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117782445A (en) * | 2023-11-21 | 2024-03-29 | 江苏泰阀阀门科技有限公司 | Valve gas tightness detection device |
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