CN212931827U - Stop valve gas tightness detection device - Google Patents
Stop valve gas tightness detection device Download PDFInfo
- Publication number
- CN212931827U CN212931827U CN202021298372.4U CN202021298372U CN212931827U CN 212931827 U CN212931827 U CN 212931827U CN 202021298372 U CN202021298372 U CN 202021298372U CN 212931827 U CN212931827 U CN 212931827U
- Authority
- CN
- China
- Prior art keywords
- inflation module
- stop valve
- valve
- pushing mechanism
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a stop valve air tightness detection device, which solves the accuracy of stop valve air tightness detection; detecting efficiency; automatic sorting of stop valves. The utility model comprises a sensing device and an inflation module; the inflation module is hollow inside, a connecting port matched with the valve is formed in the outer portion of the inflation module, the connecting port is communicated with a cavity in the inflation module, the inflation module is connected with the valve through the connecting port, an inner cavity of the inflation module and the valve can form a closed space, the inflation module is further provided with an air inlet and an induction port, the air inlet and the induction port are both communicated with the inner cavity of the inflation module, and air enters the inflation module through the air inlet; the induction system comprises an inductor and a pressure probe, wherein the pressure probe is electrically connected with the inductor and is positioned in the induction port. The utility model discloses simple structure, it is simple and convenient to detect the flow, improves accuracy and the detection efficiency that the gas tightness detected, has realized advantages such as automatic sorting.
Description
Technical Field
The invention belongs to the technical field of valve detection, and particularly relates to a stop valve air tightness detection device.
Background
With the continuous development of the related technology of Liquefied Natural Gas (LNG), the LNG has a wider application range, and the requirements of the stop valve matched with the LNG are more and more, and the performance requirements of the stop valve are more and more strict, and the air tightness detection is a necessary detection item in the performance detection process of the stop valve, which is directly related to the service life and the use safety of the stop valve.
For different application environments, the adopted stop valves are different, and according to the difference of the flow directions of the stop valve channels, the commonly used stop valves can be divided into a straight-through stop valve and an angle stop valve, wherein the air inlet end face and the air outlet end face of the straight-through stop valve are coaxially arranged, and the air inlet end face is parallel to the air outlet end face; the air inlet end face and the air outlet end face of the angle stop valve are arranged in a non-coaxial mode, and a certain included angle is formed between the two end faces. The straight-through stop valve has the characteristics of small friction force between sealing surfaces in the opening and closing process, wear resistance, small opening height, good manufacturing process performance and the like, and is most widely applied in various fields.
The straight-through type stop valve has two common problems of internal leakage and external leakage in the application process, wherein the internal leakage refers to the fact that gas at the air inlet end leaks to the air outlet end after the stop valve is closed, and the external leakage refers to the fact that the gas in the valve body leaks to the outside of the stop valve after the stop valve is opened. The 'outer leakage' and/or 'inner leakage' of the stop valve greatly affect the application of the stop valve and reduce the safety of the stop valve, so that the air tightness of each stop valve must be detected before the stop valve leaves a factory to ensure the air tightness of the stop valve. The existing straight-through stop valve has many air tightness test methods and different detection effects, particularly for the straight-through stop valve with a smooth polished rod welded at an air inlet end, the air tightness detection difficulty is higher, and the following three methods are commonly used: firstly, closing a valve of a stop valve, immersing an air inlet of the valve into water, ventilating the stop valve from an air outlet and observing whether bubbles are generated at the air inlet; secondly, extracting a plurality of pieces from each batch of valves, carrying out welding joint on a polished rod of the air inlet, ventilating from the air inlet, and checking the leakage condition of the air outlet; and thirdly, the air inlet end adopts a nut closing-up connection joint, the air outlet end adopts an O-shaped ring sealing form, and the valve is fixed through 4 mounting holes of the base. However, the above methods all have certain defects or disadvantages, for example, the detection method adopted in the first method is not strict, the flow direction of the test gas does not accord with the design direction of the stop valve, and the relevant regulations of the air tightness detection of the stop valve are not met; the detection method adopted in the second method is not only complex in operation and not beneficial to continuous sale of the detected stop valve, but also does not meet the requirement that each stop valve needs to be subjected to airtightness detection; although the detection method adopted in the third method is improved on the basis of the two methods, the problem of the air tightness detection of the stop valve can be solved to a certain extent, but the structure is complex, the disassembly and the assembly are unchanged, and the air tightness test of the stop valves in batches is not facilitated. The existing stop valve air tightness detection method greatly influences the accuracy of stop valve air tightness detection, reduces the efficiency of stop valve air tightness detection, and improves the air tightness detection cost.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the accuracy of the air tightness detection of the stop valve is improved; the detection efficiency is improved; automatic letter sorting stop valve.
The utility model provides a solve above-mentioned problem's a stop valve gas tightness detection device.
The utility model discloses a following technical scheme realizes:
a stop valve air tightness detection device comprises an induction device and an inflation module; the inflation module is hollow inside, a connecting port matched with the valve is formed in the outer portion of the inflation module, the connecting port is communicated with a cavity in the inflation module, the inflation module is connected with the valve through the connecting port, an inner cavity of the inflation module and the valve can form a closed space, the inflation module is further provided with an air inlet and an induction port, the air inlet and the induction port are both communicated with the inner cavity of the inflation module, and air enters the inflation module through the air inlet; the induction system comprises an inductor and a pressure probe, wherein the pressure probe is electrically connected with the inductor and is positioned in the induction port.
Connecting the inflation module to a stop valve, closing the stop valve, and then inflating the inner cavity of the inflation module through an air inlet; stopping inflating when the air pressure reaches a certain value, then closing the air inlet, stabilizing for ten seconds, and judging the tightness of the stop valve through the change value of the air pressure in the air cavity by the air pressure probe; compared with the traditional method, the detection result of the air valve air.
Preferably, the inflatable device further comprises a clamping device, one end of the clamping device is provided with a connecting piece, the clamping device is connected with the inflatable module through a connecting block, and the inflatable module can reciprocate through the clamping device; the inflation module is connected with the clamping device through the connecting piece, so that the automatic connection of the inflation module and the stop valve is realized, and meanwhile, the clamping device can provide larger clamping force to prevent air leakage due to overlarge air pressure.
Preferably, the clamping device can be an oil cylinder or a motor connected with a connecting rod sliding block mechanism or a motor connected with a ball screw, and the production period of equipment can be shortened and the cost is saved by adopting a standard component.
Preferably, a sealing ring is arranged in the connecting port, so that the air tightness of the inner cavity of the inflation module is better, and the air leakage of the valve port of the stop valve due to unevenness is avoided.
Preferably, the automatic sorting machine further comprises a frame, a transverse pushing mechanism and a sorting channel, wherein the frame is a cuboid which is communicated up and down, the inflation module is installed on the inner walls of the two sides of the frame through a clamping device, and the axes of connecting ports on the two sides of the inflation module are overlapped; the transverse pushing mechanism is provided with a connecting block, the connecting block performs reciprocating motion through the transverse pushing mechanism, and the transverse pushing mechanism is connected with the outer wall of the frame through the connecting block; the sorting channels are arranged below the valve detection device, and the number of the sorting channels is 2. Integrate single device, can carry out the detection of gas tightness to a plurality of stop valves simultaneously, improve detection efficiency, after detecting the completion, still can be according to whether leak gas automatic sort the stop valve, saved the screening time.
Preferably, the transverse pushing mechanism is arranged on a shock absorber, and the shock absorber is connected with one side of the frame, so that vibration generated when the frame moves is reduced.
Preferably, the bottom of the frame is provided with a sliding block, and a guide rail is arranged below the sliding block, so that the frame is more stable when moving, and the phenomenon that the vibration causes different axes of the detection device in the frame is avoided.
Preferably, the automatic sorting device further comprises a controller, the controller is respectively electrically connected with the sensor, the clamping device and the transverse pushing mechanism, the controller controls the transverse pushing mechanism and the clamping device through signals collected from the sensor, the controller can detect air pressure signals represented in the sensor, whether the stop valve is qualified or not is determined through changes of the air pressure signals, and then the transverse pushing device and the clamping device are controlled to enable the stop valve to fall to the sorting channel.
The utility model discloses have following advantage and beneficial effect:
1. the utility model discloses when carrying out the centre gripping to the stop valve, adopt clamping device, can provide considerable power, prevent that stop valve and aerating device junction from leading to leaking gas because of atmospheric pressure is too big.
2. The utility model discloses what adopt on detecting the gas tightness is atmospheric pressure probe cooperation inductor, and the change of atmospheric pressure can be recorded, and it is more scientific and accurate to detect the gas tightness.
3. The utility model discloses press and accomplish the back in the detection, but automatic sorting to qualified or unqualified passageway, saved the letter sorting time.
4. The utility model discloses detection, letter sorting can realize unmanned and never shut down, have improved the efficiency that detects the pneumatic valve greatly, and the error rate is low.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a sectional view of the inflation module of the present invention.
Fig. 2 is an axial side view of embodiment 2 of the present invention.
Reference numbers and corresponding part names in the drawings:
1-stop valve, 2-connecting port, 3-induction port, 4-middle connecting piece, 5-inflation block, 6-air inlet, 7-sealing ring, 8-frame, 9-inductor, 10-sorting channel, 11-connecting block, 12-air cylinder, 13-shock absorber, 14-sliding block guide rail and 15-oil cylinder.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
Example 1
A stop valve airtightness detection device comprises an induction device and an inflation module 5; the inflation module 5 is hollow inside, a connecting port 2 matched with the valve is formed in the outer portion of the inflation module 5, the connecting port 2 is communicated with a cavity in the inflation module 5, the inflation module 5 is connected with the valve through the connecting port 2, when the valve is closed, a closed space is formed inside the end, connected with the valve, of the inner cavity of the inflation module, the inflation module is further provided with an air inlet 6 and an induction port 3, the air inlet 6 and the induction port 3 are both communicated with the inner cavity of the inflation module 5, and air enters the inflation module 5 through the air inlet 6; the induction device comprises an inductor 9 and a gas pressure probe, the gas pressure probe is electrically connected with the inductor 9, and the gas pressure probe is positioned in the induction port 3.
During detection, the stop valve is closed, the valve ports at the two ends of the stop valve are respectively connected with the detection device, a cavity of the detection device and the interior of the corresponding valve port of the stop valve form a closed space, then air is filled through the air inlet 6, the air is stopped from being filled when certain pressure is reached, the test is started for 10 seconds, and whether the pressure in the closed space changes or not is detected through the air pressure probe. If the air tightness is not changed, the air tightness is good, and if the air tightness is changed, the air tightness is not good; simple structure, the gas tightness can be directly perceived through data, and the testing result is reliable.
The air pressure probe and the sensor (9) are both an existing probe and an existing sensor (9) used.
Example 2
On the basis of the embodiment 1, the automatic sorting machine further comprises a clamping device, a frame 8, a transverse pushing mechanism and a sorting channel 10, wherein the clamping device is an oil cylinder 15, one end of the oil cylinder 15 is provided with a middle connecting piece 4, the oil cylinder 15 is connected with an inflation module 5 through the middle connecting piece 4, and the inflation module 5 can do reciprocating motion through the telescopic driving of the oil cylinder 15; the frame 8 is a cuboid which is penetrated up and down, the inflation module 5 is arranged on the inner walls of two sides of the frame 8 through the tail part of the oil cylinder 15, the axes of the connecting ports 2 of two sides of the inflation module 5 are overlapped, and the sealing rings 7 are arranged in the connecting ports 2; the transverse pushing mechanism is provided with an air cylinder 12, the axis of the air cylinder 12 is perpendicular to the side face of the frame 8, the head of the air cylinder 12 is connected with a connecting block 11, the air cylinder 12 is connected with the outer wall of the frame 8 through the connecting block 11, and the air cylinder 12 drives the frame 8 to reciprocate through the connecting block 11; the transverse pushing mechanism is also provided with a shock absorber 13, and the shock absorber 13 is vertically connected with one side of the frame 8; the bottom of the frame 8 is provided with a slide block guide rail 14; the sorting channels 10 are arranged below the valve detection device, and the number of the sorting channels is 2; the controller is respectively electrically connected with the inductor, the oil cylinder 15 and the transverse pushing mechanism, the controller controls the transverse pushing mechanism and the oil cylinder 15 by acquiring signals of the inductor, and the controller adopts the conventional PLC controller.
The difference between this embodiment and embodiment 1 lies in, realize integrating embodiment 1, can once only carry out the detection of a plurality of stop valve gas tightness, still have the automatic sorting function, after detecting the completion, cylinder 12 is the withdrawal state at first, what correspond below the frame this moment is qualified passageway, the controller detects the numerical value of atmospheric pressure in the inductor, if change, then the stop valve is unqualified, controller control signals, cylinder 12 stretches out, after the cylinder 12 action was accomplished, controller control corresponds hydro-cylinder 15 withdrawal, at this moment unqualified stop valve just drops in unqualified passageway, if atmospheric pressure numerical value does not change, indicate that the stop valve is qualified, hydro-cylinder 15 directly retracts, the stop valve falls into in the qualified passageway.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. The stop valve airtightness detection device is characterized by comprising an induction device and at least one inflation module (5);
the inflation module (5) is hollow inside, a connector (2) matched with the valve input port and/or the valve output port is arranged outside the inflation module (5), the connector (2) is communicated with the cavity inside the inflation module (5), the inflation module (5) is connected with the valve through the connector (2), the inner cavity of the inflation module (5) and the valve form a closed space, the inflation module (5) is further provided with an air inlet (6) and an induction port (3), the air inlet (6) and the induction port (3) are both communicated with the inner cavity of the inflation module (5), and air enters the inflation module (5) through the air inlet (6);
the induction device comprises an inductor (9) and a pressure probe, the pressure probe is electrically connected with the inductor (9), and the pressure probe is positioned in the induction port (3).
2. The stop valve airtightness detection apparatus according to claim 1, further comprising a clamping device, wherein an intermediate connection member (4) is provided at one end of the clamping device, the clamping device is connected to the inflation module (5) through the intermediate connection member (4), and the inflation module (5) can reciprocate through the clamping device.
3. The device for detecting the airtightness of the stop valve according to claim 2, wherein the clamping device is an oil cylinder or a motor connected with a link-slider mechanism or a motor connected with a ball screw.
4. The device for detecting the airtightness of the stop valve according to claim 1, wherein a sealing ring (7) is provided in the connecting port (2).
5. The stop valve airtightness detection apparatus according to claim 2, further comprising a frame (8), a lateral pushing mechanism, and a sorting channel (10);
the frame (8) is a cuboid which is communicated up and down, the clamping devices are arranged on the inner walls of two sides of the frame (8), and the axes of the connecting ports (2) on two sides are overlapped;
the transverse pushing mechanism is provided with a connecting block (11), the connecting block (11) reciprocates through the transverse pushing mechanism, and the transverse pushing mechanism is connected with the outer wall of the frame (8) through the connecting block (11); the sorting channels (10) are arranged below the valve detection device, and the number of the sorting channels is 2.
6. The device for detecting the airtightness of the stop valve according to claim 5, wherein the lateral pushing mechanism is provided with a shock absorber (13), and the shock absorber (13) is connected to one side of the frame (8).
7. The device for detecting the airtightness of the stop valve according to claim 5, wherein a sliding block is arranged at the bottom of the frame (8), and a guide rail is arranged below the sliding block.
8. The stop valve airtightness detection device according to claim 5, further comprising a controller, wherein the controller is electrically connected to the sensor (9), the clamping device and the lateral pushing mechanism, respectively, and the controller controls the lateral pushing mechanism and the clamping device by acquiring a signal from the sensor (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021298372.4U CN212931827U (en) | 2020-07-06 | 2020-07-06 | Stop valve gas tightness detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021298372.4U CN212931827U (en) | 2020-07-06 | 2020-07-06 | Stop valve gas tightness detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212931827U true CN212931827U (en) | 2021-04-09 |
Family
ID=75328478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021298372.4U Active CN212931827U (en) | 2020-07-06 | 2020-07-06 | Stop valve gas tightness detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212931827U (en) |
-
2020
- 2020-07-06 CN CN202021298372.4U patent/CN212931827U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103308254A (en) | Dry test method and dry test device for testing leak tightness of oil cooler | |
| CN2087337U (en) | Micro-leakage measuring instrument | |
| CN108414165A (en) | A kind of valve measurement pressure testing device | |
| CN110441009A (en) | A kind of car deceleration device shell air tightness detection apparatus | |
| CN212931827U (en) | Stop valve gas tightness detection device | |
| CN101832846B (en) | Workbench for detecting air tightness of air valve | |
| CN102435403B (en) | Integrated device applicable to differential pressure leakage detection of high/low pressures | |
| CN209727383U (en) | A kind of air-conditioning compressor cylinder device for detecting sealability | |
| CN217687759U (en) | Valve sealing performance detection equipment | |
| CN114112689A (en) | Tensile strength check out test set based on rubber and plastic sealing member production system | |
| CN113188729A (en) | Air tightness test fixture | |
| CN212159140U (en) | Two oil sources of pushing away pressurization experimental apparatus | |
| CN107402160B (en) | Self-locking condom blasting device, condom blastmeter system and detection method | |
| CN210571249U (en) | Auxiliary water tank leakage detection device | |
| CN220170456U (en) | Local leak detection device | |
| CN111413038A (en) | Sealing detection mechanism of liquefied petroleum gas cylinder valve | |
| CN216284164U (en) | Air tightness detection device of electromagnetic valve | |
| CN113772615B (en) | Filling clamping assembly, filling gun, filling device and automatic clamping identification method | |
| CN110985896A (en) | Multichannel pipeline intelligence leak hunting system | |
| CN2864647Y (en) | Closed property detecting device for magnetic valve body | |
| CN217384606U (en) | Air tightness detection device for sealed bearing | |
| CN219798640U (en) | Water level sensor gas tightness detection device | |
| CN205002930U (en) | Automobile -used plastics oil pan test equipment | |
| CN219391277U (en) | Differential pressure cylinder tightness detection vehicle | |
| CN218885334U (en) | Valve leakage detection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |