CN209014222U - A kind of anhydrous work seal detection device of gate valve - Google Patents
A kind of anhydrous work seal detection device of gate valve Download PDFInfo
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- CN209014222U CN209014222U CN201821846267.2U CN201821846267U CN209014222U CN 209014222 U CN209014222 U CN 209014222U CN 201821846267 U CN201821846267 U CN 201821846267U CN 209014222 U CN209014222 U CN 209014222U
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Abstract
A kind of anhydrous work seal detection device of gate valve, including detection gas circuit unit, closure unit and detection control unit；Wherein, the detection gas circuit unit includes the gas path pipe connection of gas source, intake valve, test valve, vent valve, differential pressure transmitter, pressure transmitter, intake valve, test valve, vent valve, differential pressure transmitter, pressure transmitter are electrically connected with detection control unit, to control the folding of each valve member and the signal of acquisition differential pressure transmitter, pressure transmitter；The closure unit includes the first closure end cap and the second closure end cap for being respectively used to block two exocoels of gate valve, and blocking end cap can be opened or be closed by detection control unit control, so that gate valve ends or connection.The utility model can realize the automatic detection of anhydrous external leakage, internal leakage leakproofness to the gate valve for forming separate cavities with double disc, be suitable for valve member anhydrous sealing detection automatic production line online, improve production efficiency, improve detection accuracy and consistency.
Description
Technical Field
The utility model relates to a valve seal detects technical field, concretely relates to anhydrous online leakproofness detection device of gate valve.
Background
The gate valve is used as an important device for connecting or cutting off the transmission pipelines of urban gas, heat supply, sewage and the like, has higher sealing performance requirement, and particularly has the requirement that the gate valve with a double-gate plate to form an isolation cavity has no external leakage in the whole casting part and no internal leakage in the isolation cavity formed in the gate valve. For the external leakage detection of the gate valve, a plurality of manufacturers adopt a water detection method of manually observing bubbles, some manufacturers adopt a pressure gauge to observe pressure reduction, some manufacturers adopt a method of measuring flow by hydraulic pressure, for example, the patent application No. 201410809793.1 'gate valve on-line hydraulic detection equipment', and some large valve manufacturing enterprises adopt a conventional differential pressure air tightness detection instrument to detect. And the conventional instrument cannot automatically detect the internal leakage of the gate valve, namely the leakage quantity of the middle cavity of the gate valve to the side cavities at both sides.
Patent application No. 201711194463.6 "a gate valve seepage detection device and pipe-line system" adopt the leakage difference of U type pressure differential detection middle chamber to both sides chamber, patent application No. 2011103533841 "an air tightness detection device of gate valve", is that leak the gate valve and insert the method that the basin looked at the bubble through the pipeline and detect the closing sealing performance of gate valve, judge the cavity leakproofness with the manometer decline. Patent application No. 201810226433.7 "fixed ball valve sealing performance detection device" judges whether the sealing washer on both sides leaks on disk seat and spheroid, disk seat through the pressure that detects three detection mouth, and the device is owing to need open the inspection hole on ball valve sealing washer connecting seat, needs further split, installation to the ball valve, can only be applicable to the design test to the ball valve design, can not be applicable to the sealing performance of on-line measuring finished product valve member.
SUMMERY OF THE UTILITY MODEL
The utility model provides an anhydrous online leakproofness detection device of gate valve can solve the technical problem that traditional technique can't realize automatic and online detection gate valve leakproofness.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a kind of no water of gate valve seals the checkout gear online, based on the gate valve, the said gate valve includes the double gate board forms three and isolates the cavity, cavity A, cavity B and cavity C, the cavity B locates in the middle, set up the hand grip on the gate valve, including detecting the gas circuit unit, plugging unit and detecting the control unit; wherein,
the detection gas circuit unit comprises a gas source, a gas inlet valve, a first test valve and a second test valve, wherein the gas source is connected with the gas inlet valve through a pipe, one end of the first test valve is connected with the gas inlet valve through a pipe, the other end of the first test valve is communicated with a test input pipeline, one end of the second test valve is connected with the gas inlet valve through a pipe, and the other end of the second test valve is communicated with a standard test pipeline.
And the output port of the standard test pipeline is sealed and blocked.
The detection gas circuit unit also comprises a differential pressure transmitter and a first pressure transmitter, wherein one end of the differential pressure transmitter is communicated with the test input pipeline, and the other end of the differential pressure transmitter is communicated with the standard test pipeline; the first pressure transmitter is in communication with the test input conduit.
The detection gas circuit unit also comprises a first air release valve and a second air release valve, one end of the first air release valve is communicated with the test input pipeline, and the other end of the first air release valve is communicated with the outside atmosphere; one end of the second air release valve is communicated with the standard test pipeline, and the other end of the second air release valve is communicated with the outside atmosphere.
The detection gas circuit unit also comprises a third test valve, a third air release valve and a second pressure transmitter, wherein one end of the third air release valve is communicated with the third test valve, and the other end of the third air release valve is communicated with the outside atmosphere; the other end of the third test valve is connected with a test output pipeline; the second pressure transmitter is connected to the pipeline between the third test valve and the third air release valve.
The blocking unit comprises a first blocking end cover and a second blocking end cover, the first blocking end cover is fixedly connected to an output shaft of the first driving cylinder, and the first blocking end cover is driven by the first driving cylinder to move telescopically to block the end face of the cavity A of the gate valve; the second plugging end cover is fixedly connected to an output shaft of the second driving cylinder and is driven by the second driving cylinder to perform telescopic motion to plug the end face of the cavity C of the gate valve; a pipeline arranged in the first plugging end cover is respectively communicated with the test input pipeline and the cavity A port of the gate valve, and a pipeline arranged in the second plugging end cover is respectively connected with the test output pipeline and the cavity C port of the gate valve;
the plugging unit further comprises a first driving electromagnetic valve and a second driving electromagnetic valve, the first driving electromagnetic valve is connected with the first driving air cylinder pipe, and the second driving electromagnetic valve is connected with the second driving air cylinder pipe;
the plugging unit further comprises a motor, an output port of the motor is connected to a handle of the gate valve through a connector, and an output shaft of the motor rotates the handle to drive the cavity B of the gate valve to move up and down so as to stop or communicate the gate valve;
the detection control unit is electrically connected with the air inlet valve, the first test valve, the second test valve, the differential pressure transmitter, the first air release valve, the second air release valve, the third test valve, the second pressure transmitter, the third air release valve, the first driving electromagnetic valve, the second driving electromagnetic valve and the motor respectively.
According to the above technical scheme, the utility model discloses can realize the automatic detection of anhydrous outer leakage, interior leakage leakproofness to the gate valve that has the double-gate board formation isolation chamber, be applicable to the online anhydrous sealed automation line that detects of valve member, improve production efficiency, promote and detect precision and uniformity.
To sum up, the beneficial effects of the utility model reside in that:
1) the water-free online detection of the leakage of the gate valve from the outside and the leakage of the middle isolation cavity to two sides after the gate valve is stopped can be realized at one time by controlling the driving detection gas circuit unit and combining the plugging unit.
2) One interface of the first differential pressure transmitter is communicated with the atmosphere, and the differential pressure transmitter is converted into a pressure transmitter for use, so that the detection gas circuit is greatly simplified, and the cost is saved.
3) Through setting up and control of differential pressure transmitter, control valve spare on test input pipeline, the test output pipeline, realize ending the back to the gate valve, detect the B chamber simultaneously and leak the leakage quantity to the A chamber and B chamber leak to C chamber, accord with more and detect the standard requirement, also improved detection efficiency simultaneously.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 101-gas source, 102-gas inlet valve, 103-first test valve, 104-second test valve, 105-differential pressure transmitter, 106-first air release valve, 107-second air release valve, 108-first pressure transmitter, 109-third test valve, 110-second pressure transmitter, 111-third air release valve, 112-test input pipeline, 113-standard test pipeline, 114-test output pipeline, 2-detection control unit, 301-first drive electromagnetic valve, 302-second drive electromagnetic valve, 303-first drive cylinder, 304-second drive cylinder, 305-first plugging end cover, 306-second plugging end cover, 307-motor, 4-gate valve and 401-handle.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention, in which a solid line is a gas pipe connection, a dotted line is a circuit connection, and a dot-dash line is a mechanical connection.
As shown in fig. 1, the online anhydrous leakproofness detection device of gate valve of this embodiment, based on gate valve 4, gate valve 4 includes that double-gate board forms three isolation chamber, and a chamber, B chamber and C chamber, B chamber are located the centre, set up handle 401 on the gate valve 4, including detecting gas circuit unit, detection control unit 2, shutoff unit.
The gas source 101, the gas inlet valve 102, the first test valve 103, the second test valve 104, the third test valve 109, the differential pressure transmitter 105, the first air release valve 106, the second air release valve 107 and the third air release valve 111 of the detection gas circuit unit are connected through a pipeline, and the first pressure transmitter 108 and the second pressure transmitter 110 are connected through a pipeline.
The detection control unit 2 is electrically connected with an air inlet valve 102, a first test valve 103, a second test valve 104, a third test valve 109, a differential pressure transmitter 105, a first air release valve 106, a second air release valve 107 and a third air release valve 111 of the detection air path unit, and a first pressure transmitter 108 and a second pressure transmitter 110. One ends of the interfaces of the first release valve 106, the second release valve 107 and the third release valve 111 are connected with the pipeline of the detection and control unit 2, and one ends of the interfaces release air. The outlet of the standard test pipe 113 connected to the second test valve 104 is sealed.
The plugging unit comprises a first driving electromagnetic valve 301, a second driving electromagnetic valve 302, a first driving air cylinder 303, a second driving air cylinder 304, a first plugging end cover 305, a second plugging end cover 306 and a motor 307, wherein the first driving electromagnetic valve 301, the second driving electromagnetic valve 302, the first driving air cylinder 303 and the second driving air cylinder 304 are connected through pipelines. The first blocking end cover 305 is fixedly connected to an output shaft of the first driving cylinder 303, and can be driven by the first driving cylinder 303 to perform telescopic motion to block the end face of the cavity a of the gate valve 4. The second plugging end cap 306 is fixedly connected to the output shaft of the second driving cylinder 304, and can be driven by the second driving cylinder 304 to perform telescopic motion to plug the end face of the cavity C of the gate valve 4. The first plugging end cap 305 has a conduit connecting the test input conduit 112 to the port a of the gate valve 4, and the first plugging end cap 306 has a conduit connecting the test output conduit 114 to the port C of the gate valve 4. The output port of the motor 307 is connected to the handle 401 of the gate valve 4 through a connector, the output shaft of the motor 307 drives the handle 401 of the gate valve 4 to rotate, and the cavity B of the gate valve 4 moves up and down, so that the gate valve 4 is stopped or communicated.
The detection control unit 2 is electrically connected with a first driving electromagnetic valve 301, a second driving electromagnetic valve 302 and a motor 307 in the plugging unit.
102 is an air inlet valve which is mainly responsible for the on-off of the air supply of the main joint path; 106. 107 and 111 are air release valves which are responsible for releasing the gas in the pipeline; 103. 104, 109 serve merely to make and break the conduit.
105 is a differential pressure transmitter for detecting the pressure difference across the pipe, and 108 and 110 are pressure transmitters for detecting the pressure change of the pipe.
The embodiment of the utility model provides a simultaneously provide a gate valve does not have water on-line leakproofness detection device's detection and control step based on double-gate board forms isolation chamber:
(1) starting the device, the detection control unit 2 drives the first driving electromagnetic valve 301 and the second driving electromagnetic valve 302 to act, so that the output shafts of the first driving cylinder 303 and the second driving cylinder 304 respectively drive the first blocking end cover 305 and the second blocking end cover 306 to act, and the end faces of the cavity a and the cavity C of the blocking gate valve 4 are sealed.
(2) The air inlet valve 102, the first release valve 106, the second release valve 107 and the third test valve 109 are closed, and the first test valve 103, the second test valve 104 and the third release valve 111 are opened.
(3) The drive motor 307 rotates forward to communicate the A, B, C chamber of the gate valve 4.
(4) The intake air is opened 102 and when the detection control unit 2 detects that the first pressure transmitter 108 reaches the set pressure, the intake air is closed 102.
(5) After a period of time of balancing, the first test valve 103 and the second test valve 104 are closed, the detection control unit 2 collects the signal of the differential pressure transmitter 105, and the leakage amount, that is, the external leakage amount of the gate valve 4, is calculated.
(6) The driving motor 307 rotates reversely, the gate valve 4 is cut off, so that the A, B, C cavities are separated, the first air release valve 106, the second air release valve 107 and the third test valve 109 are opened, and the gas in the cavity A and the cavity C is released.
(7) And simultaneously closing the first air release valve 106 and the third air release valve 111, simultaneously acquiring the first differential pressure transmitter 105 and the second pressure transmitter 110, and calculating the leakage rate of the two sides, namely the leakage rate of the cavity B of the gate valve 4 to the cavity A and the cavity C.
(8) The first and third bleed valves 106, 111 are opened to release gas leaking in the test input and output lines 112, 114.
(9) And (3) closing the first air release valve 106 and the third air release valve 111, driving the motor 307 to rotate forwards, communicating the A, B, C cavity of the gate valve 4, acquiring a signal of the first pressure transmitter, and calculating the residual pressure of the cavity B of the gate valve 4 to judge whether the cavity B leaks greatly.
(10) And opening the first test valve 103, the second test valve 104, the first air release valve 106, the second air release valve 107 and the third air release valve 111, releasing air, driving the first driving electromagnetic valve 301 and the second driving electromagnetic valve 302 to act, so that the output shafts of the first driving air cylinder 303 and the second driving air cylinder 304 are separated from the first plugging end cover 305 and the second plugging end cover 306 respectively, and ending the test.
To sum up, the utility model discloses device can realize the automatic detection of anhydrous outer leakage, internal leakage leakproofness to the gate valve that has double-gate board formation isolation chamber, is applicable to the online anhydrous sealed automation line that detects of valve member, has improved production efficiency, has promoted detection accuracy and uniformity.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (2)
1. The utility model provides an anhydrous online leakproofness detection device of gate valve, is based on gate valve (4), gate valve (4) include that double-gate board forms three isolation chamber, A chamber, B chamber and C chamber, and the B chamber is located the centre, sets up handle (401), its characterized in that on gate valve (4): comprises a detection gas circuit unit, a plugging unit and a detection control unit (2); wherein,
the detection gas circuit unit comprises a gas source (101), an air inlet valve (102), a first test valve (103) and a second test valve (104), wherein the gas source (101) is connected with the air inlet valve (102) through a pipe, one end of the first test valve (103) is connected with the air inlet valve (102) through a pipe, the other end of the first test valve (103) is communicated with a test input pipeline (112), and a first pressure transmitter (108) is communicated with the test input pipeline (112); one end of the second test valve (104) is connected with the air inlet valve (102) through a pipe, the other end of the second test valve is connected with a standard test pipeline (113), and an output port of the standard test pipeline (113) is sealed and blocked;
the detection gas circuit unit further comprises a differential pressure transmitter (105), a first air release valve (106) and a second air release valve (107), the differential pressure transmitter (105) is respectively connected with the first air release valve (106) and the second air release valve (107) through pipes, the differential pressure transmitter (105) and the second air release valve (107) are respectively communicated with a standard test pipeline (113), and the differential pressure transmitter (105) and the first air release valve (106) are also respectively communicated with a test input pipeline (112);
the detection gas circuit unit also comprises a third test valve (109), a second pressure transmitter (110) and a third deflation valve (111) which are communicated with each other through pipelines;
the blocking unit comprises a first blocking end cover (305) and a second blocking end cover (306), and the first blocking end cover (305) is controlled by the detection control unit (2) to move telescopically to block the end face of the cavity A of the gate valve (4); the second plugging end cover (306) is controlled by the detection control unit (2) to perform telescopic motion to plug the end face of the cavity C of the gate valve (4); a pipeline is arranged in the first blocking end cover (305) and is respectively communicated with a test input pipeline (112) and an A cavity opening of the gate valve (4), a pipeline is arranged in the second blocking end cover (306) and is respectively connected with a test output pipeline (114) and a C cavity opening of the gate valve (4), and the test output pipeline (114) is also communicated with a third test valve (109);
the plugging unit further comprises a motor (307), an output port of the motor (307) is connected to a handle (401) of the gate valve (4) through a connector, and an output shaft of the motor (307) rotates the handle (401) to drive a cavity B of the gate valve (4) to move up and down, so that the gate valve (4) is cut off or communicated;
the detection control unit (2) is electrically connected with the air inlet valve (102), the first test valve (103), the second test valve (104), the differential pressure transmitter (105), the first air release valve (106), the second air release valve (107), the first pressure transmitter (108), the third test valve (109), the second pressure transmitter (110), the third air release valve (111) and the motor (307) respectively.
2. The device for detecting the water-free online sealing property of the gate valve according to claim 1, wherein:
the first plugging end cover (305) is fixedly connected to an output shaft of the first driving cylinder (303), and the first plugging end cover (305) is driven by the first driving cylinder (303) to perform telescopic motion to plug the end face of the cavity A of the gate valve (4); the second plugging end cover (306) is fixedly connected to an output shaft of the second driving cylinder (304), and the second plugging end cover (306) is driven by the second driving cylinder (304) to perform telescopic motion to plug the end face of the cavity C of the gate valve (4);
the plugging unit further comprises a first driving electromagnetic valve (301) and a second driving electromagnetic valve (302), the first driving electromagnetic valve (301) is connected with a first driving air cylinder (303) through a pipe, and the second driving electromagnetic valve (302) is connected with a second driving air cylinder (304) through a pipe;
the first driving electromagnetic valve (301) and the second driving electromagnetic valve (302) are respectively electrically connected with the detection control unit (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821846267.2U CN209014222U (en) | 2018-11-09 | 2018-11-09 | A kind of anhydrous work seal detection device of gate valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821846267.2U CN209014222U (en) | 2018-11-09 | 2018-11-09 | A kind of anhydrous work seal detection device of gate valve |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109341984A (en) * | 2018-11-09 | 2019-02-15 | 安徽中科智能高技术有限责任公司 | A kind of anhydrous work seal detection device of gate valve and detection method |
| CN110220652A (en) * | 2019-06-24 | 2019-09-10 | 吴忠仪表有限责任公司 | Deep-sea gate valve seat sealing reliability dynamic simulant test device |
| CN110319981A (en) * | 2019-08-15 | 2019-10-11 | 郭颂 | A kind of valve manufactures leakproofness general detection device and method |
-
2018
- 2018-11-09 CN CN201821846267.2U patent/CN209014222U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109341984A (en) * | 2018-11-09 | 2019-02-15 | 安徽中科智能高技术有限责任公司 | A kind of anhydrous work seal detection device of gate valve and detection method |
| CN110220652A (en) * | 2019-06-24 | 2019-09-10 | 吴忠仪表有限责任公司 | Deep-sea gate valve seat sealing reliability dynamic simulant test device |
| CN110319981A (en) * | 2019-08-15 | 2019-10-11 | 郭颂 | A kind of valve manufactures leakproofness general detection device and method |
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