CN215487755U - Detachable sealing valve - Google Patents
Detachable sealing valve Download PDFInfo
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- CN215487755U CN215487755U CN202121966325.7U CN202121966325U CN215487755U CN 215487755 U CN215487755 U CN 215487755U CN 202121966325 U CN202121966325 U CN 202121966325U CN 215487755 U CN215487755 U CN 215487755U
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- negative pressure
- valve
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- sealing
- connecting pipe
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Abstract
The utility model discloses a detachable sealing valve which comprises a negative pressure bag, a three-way connecting pipe and two first control valves, wherein the two first control valves and the negative pressure bag are respectively detachably connected with three connectors of the three-way connecting pipe one by one, and a second control valve is arranged at the joint of the negative pressure bag and the three-way connecting pipe. The negative pressure bag pressure is changed to a negative pressure state in the detachable sealing valve by using an external negative pressure pump. And then controls the two first control valves to be disconnected. Then, the negative pressure bag is inserted into the three-way connection tube. The second control valve is spread, and the negative pressure bag is communicated with the three-way connecting pipe. At the moment, the air in the three-way connecting pipe is sucked into the negative pressure bag under the action of the negative pressure bag. When the negative pressure bag is the same as the air pressure of the three-way connecting pipe, the three-way vent pipe is separated from the first electromagnetic valve, and the detachable function is realized.
Description
Technical Field
The utility model relates to the technical field of valve bodies, in particular to a detachable sealing valve.
Background
Due to factors such as daily gas micro-water measurement, density relay verification and equipment aging and cracking, SF6 switch equipment causes SF6 gas leakage and pressure drop. In order to ensure the insulation and arc extinguishing performance of the SF6 in the high-voltage equipment, air must be supplemented. In the traditional air supply mode, after SF6 gas in a high-pressure gas bottle is decompressed by a pressure reducing valve, a maintainer directly uses a rubber pipe to be connected to high-pressure equipment for air supply. Residual gas is recovered through the gas recovery device, however, the sealing valve of the gas recovery device is fixedly connected with the sealing structure, and the disassembly is inconvenient.
SUMMERY OF THE UTILITY MODEL
It is an object of the present invention to provide a removable sealing valve to facilitate removal of the sealing valve.
In order to achieve the purpose, the utility model provides a detachable sealing valve which comprises a negative pressure bag, a three-way connecting pipe and two first control valves, wherein the two first control valves and the negative pressure bag are respectively detachably connected with three connectors of the three-way connecting pipe one by one, and a second control valve is arranged at the connection position of the negative pressure bag and the three-way connecting pipe.
Preferably, the negative pressure bag comprises a sealing bag and a negative pressure pipeline communicated with the sealing bag, the sealing bag is provided with a closable air suction hole, and the negative pressure pipeline is connected with the three-way connecting pipe in a sealing manner.
Preferably, the second control valve includes two valve core assemblies disposed opposite to each other, the valve core assembly includes a valve core and an elastic limiting member sleeved outside the valve core for limiting the valve core assembly, one of two ends of the valve core is an open end, the other is a closed end, a vent hole communicated with the inside of the valve core is disposed on one side of the closed end on the side wall of the valve core, and the open ends of the two valve core assemblies are abutted.
Preferably, the periphery of the closed end of the valve core is convexly arranged, one end of the elastic limiting piece is connected with the periphery of the opening end, when the valve core is in an open state, the closed end extends into the sealing bag and the middle communicating cavity of the three-way connecting pipe respectively, and the end part of the elastic limiting piece arranged in the negative pressure pipeline is abutted against the negative pressure bag and is in a compressed state.
Preferably, the vent hole is a one-way hole.
Preferably, the tee bend connecting pipe include both ends and connect respectively first pipeline and one end of first control valve with first pipe connection, the other end with the second pipeline that the negative pressure bag is connected, the second pipeline cover is established the negative pressure pipeline outside, just the second pipeline with the sealed laminating of negative pressure pipeline outer wall.
Preferably, the inner wall of the negative pressure pipeline is provided with a first limiting ring, the periphery of which can be in sealing fit with the outer wall of the opening end, and the elastic limiting part positioned in the negative pressure pipeline can be abutted against the first limiting ring;
the inner wall of the second pipeline is provided with a second limiting ring, the periphery of the second limiting ring can be in sealing fit with the outer wall of the opening end, and the elastic limiting part in the second pipeline can be abutted against the second limiting ring.
Preferably, a sealing ring is arranged at the joint of the second pipeline and the negative pressure pipeline.
Preferably, the connection part of the negative pressure pipeline and the three-way connecting pipe is connected in a suction way through a magnetic attraction structure.
Preferably, the first control valve is a solenoid valve body.
In the technical scheme, the detachable sealing valve provided by the utility model comprises a negative pressure bag, a three-way connecting pipe and two first control valves, wherein the two first control valves and the negative pressure bag are respectively detachably connected with three connectors of the three-way connecting pipe one by one, and a second control valve is arranged at the joint of the negative pressure bag and the three-way connecting pipe. The negative pressure bag pressure is changed to a negative pressure state in the detachable sealing valve by using an external negative pressure pump. And then controls the two first control valves to be disconnected. Then, the negative pressure bag is inserted into the three-way connection tube. The second control valve is spread, and the negative pressure bag is communicated with the three-way connecting pipe. At the moment, the air in the three-way connecting pipe is sucked into the negative pressure bag under the action of the negative pressure bag. When the negative pressure bag is the same as the air pressure of the three-way connecting pipe, the three-way vent pipe is separated from the first electromagnetic valve, and the detachable function is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural view of a removable sealing valve provided in an embodiment of the present invention;
FIG. 2 is an exploded view of a negative pressure bag according to an embodiment of the present invention;
fig. 3 is an exploded view of the three-way connection tube according to the embodiment of the present invention.
Wherein in FIGS. 1-3:
1.1, a negative pressure bag; 1.1.1, an air exhaust hole; 1.1.2, sealing the bag; 1.1.3, a first valve core hole; 1.1.4, a negative pressure pipeline;
1.2, a three-way connecting pipe; 1.2.1, a first pipeline; 1.2.2, a second pipeline; 1.2.3, second spool bore;
1.3, a first control valve;
1.4, a valve core; 1.4.1, closed end; 1.4.2, opening the hole end; 1.4.3, a vent hole; 1.4.4, a first sealing ring;
1.5, an elastic limiting piece;
1.6, a first magnetic part;
1.7, a second magnetic member;
1.8 and a second sealing ring.
Detailed Description
The core of the utility model is to provide a detachable sealing valve, so that the sealing valve can be detached conveniently.
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and embodiments.
Please refer to fig. 1 to fig. 3.
In a specific implementation manner, the detachable sealing valve provided in the specific embodiment of the present invention includes a negative pressure bag 1.1, a three-way connecting pipe 1.2, and two first control valves 1.3, where the two first control valves 1.3 and the negative pressure bag 1.1 are detachably connected to three ports of the three-way connecting pipe 1.2 one by one, respectively, and a second control valve is disposed at a connection point of the negative pressure bag 1.1 and the three-way connecting pipe 1.2. In particular, the first control valve 1.3 and the second control valve may be manual control valves. For ease of operation, the first control valve 1.3 is preferably a solenoid valve body. When the air-conditioning system works, the first control valve 1.3 can control the on-off of the air path.
In use, the negative pressure bag 1.1 is pressure-changed to a negative pressure state in the detachable sealing valve by means of an external negative pressure pump. The two first control valves 1.3 are then controlled to open. Then, the negative pressure bag 1.1 is inserted into the three-way connection tube 1.2. The second control valve is opened, and the negative pressure bag 1.1 is communicated with the three-way connecting pipe 1.2. At this time, the gas in the three-way connecting pipe 1.2 is sucked into the negative pressure bag 1.1 under the action of the negative pressure bag 1.1. When the negative pressure bag 1.1 and the three-way connecting pipe 1.2 have the same air pressure, the three-way connecting pipe 1.2 is separated from the first control valve 1.3, and the detachable function is realized.
In a specific embodiment, the negative pressure bag 1.1 includes a sealing bag 1.1.2 and a negative pressure pipeline 1.1.4 communicated with the sealing bag 1.1.2, the sealing bag 1.1.2 is provided with a closable air suction hole 1.1.1, and the negative pressure pipeline 1.1.4 is hermetically connected with the three-way connecting pipe 1.2. When in use, the air exhaust hole 1.1.1 is used for the external negative pressure pump to exhaust air. In particular, the sealing bag 1.1.2 is of a fixed spherical structure.
Specifically, the second control valve includes two case subassemblies that set up dorsad, and the case subassembly includes case 1.4 and overlaps and establish in case 1.4 outside for the spacing elasticity locating part 1.5 of case subassembly, and one at the both ends of case 1.4 is trompil end 1.4.2, and the other is closed end 1.4.1, and closed end 1.4.1 one side is equipped with the air vent 1.4.3 with the inside intercommunication of case 1.4 on the case 1.4 lateral wall, and the trompil end 1.4.2 butt of two case subassemblies, and air vent 1.4.3 can be one or at least two. Preferably, the elastic limiting member 1.5 is a spring. In order to improve the leakproofness, negative pressure pipeline 1.1.4 periphery cover be equipped with tee bend connecting pipe 1.2 inner wall sealing connection's second sealing washer 1.8, specifically, second sealing washer 1.8 can be the rubber sleeve.
In a specific embodiment, the periphery of the closed end 1.4.1 of the valve core 1.4 is protruded outwards, and one end of the elastic limiting piece 1.5 is connected with the periphery of the opening end 1.4.2, specifically, can be fixedly connected. When the valve core 1.4 is in an open state, the closed end 1.4.1 extends into the middle communicating cavity of the sealing bag 1.1.4 and the three-way connecting pipe 1.2 respectively, the end part of the elastic limiting piece 1.5 arranged in the negative pressure pipeline 1.1.4 is abutted against the negative pressure bag 1.1 and is in a compressed state.
When the valve core 1.4 is in a closed state, the peripheries of the two closed ends 1.4.1 are respectively sealed with the negative pressure pipeline 1.1.4 and the pipeline side wall bulge of the three-way connecting pipe 1.2.
The end part of the upper sealing end of the valve core 1.4 is sleeved with a first sealing ring 1.4.4, which can be a rubber sleeve.
The periphery of the closed end 1.4.1 of the valve core 1.4 is convexly arranged. Specifically, the outer diameter of the opening end 1.4.2 is larger than that of other positions. When the valve core 1.4 is in a closed state, the periphery of the valve core 1.4 is in a sealing state. When the valve core 1.4 is in a closed state, the periphery of the closed end 1.4.1 of the valve core 1.4 is respectively sealed with the outer walls of the negative pressure pipeline 1.1.4 and the three-way connecting pipe 1.2.
During specific installation, the elastic limiting piece 1.5 is fixedly connected with the opening end 1.4.2 of the valve core 1.4.
Preferably, the vent holes 1.4.3 are one-way holes. During operation, the air in the vent hole of the three-way connecting pipe 1.2 can only enter the valve core 1.4 through the vent hole, and the air in the negative pressure pipeline 1.1.4 can only be discharged to the outside of the vent hole from the inside of the valve core 1.4, so that the air enters the sealing bag 1.1.2.
In a specific embodiment, the three-way connecting pipe 1.2 includes a first pipeline 1.2.1 with two ends respectively connected to the first control valve 1.3 and a second pipeline 1.2.2 with one end connected to the first pipeline 1.2.1 and the other end connected to the negative pressure bag 1.1, the second pipeline 1.2.2 is sleeved outside the negative pressure pipeline 1.1.4, and the second pipeline 1.2.2 is tightly attached to the outer wall of the negative pressure pipeline 1.1.4. During specific assembly, the outer diameter of the negative pressure pipeline 1.1.4 is the same as the inner diameter of the second pipeline 1.2.2, and the negative pressure pipeline is sealed by the second sealing ring 1.8.
The inner wall of the negative pressure pipeline 1.1.4 is provided with a first limiting ring, the periphery of the first limiting ring can be in sealing fit with the outer wall of the opening end 1.4.2, and an elastic limiting part 1.5 located in the negative pressure pipeline 1.1.4 can be abutted against the first limiting ring. The inner wall of the second pipeline 1.2.2 is provided with a second limiting ring, the periphery of the second limiting ring can be in sealing fit with the outer wall of the opening end 1.4.2, and the elastic limiting part 1.5 located in the second pipeline 1.2.2 can be abutted against the second limiting ring. When the negative pressure bag is in an air inlet state, the elastic limiting piece 1.5 positioned in the negative pressure pipeline 1.1.4 is abutted against the first limiting ring and is in a compressed state.
The first conduit 1.2.1 is a transverse conduit and the second conduit 1.2.2 is a longitudinal conduit, and specifically, there may be two transverse conduits, respectively installed at opposite ends of the longitudinal conduit.
In order to facilitate the installation of the valve core assembly, the end of the negative pressure pipeline 1.1.4 connected with the sealing bag 1.1.2 is provided with a first valve core hole 1.1.3, and the second pipeline 1.2.2 is provided with a second valve core hole 1.2.3.
The closed ends 1.4.1 of the two valve cores 1.4 respectively block the first valve core hole 1.1.3 and the second valve core hole 1.2.3 in the initial position.
Specifically, the second sealing ring 1.8 is arranged on the negative pressure pipeline 1.1.4 and sealed with the second pipeline 1.2.2.
The joint of the negative pressure pipeline 1.1.4 and the three-way connecting pipe 1.2 is connected by a magnetic attraction structure. Specifically, one end of the negative pressure pipeline 1.1.4, which is far away from the sealing bag 1.1.2, is provided with a first magnetic part 1.6, and the second pipeline 1.2.2 is provided with a second magnetic part 1.7 which can be attracted with the first magnetic part 1.6. Specifically, when the device is installed, the three-way connecting pipe 1.2 can be sleeved outside the negative pressure pipeline 1.1.4.
After the SF6 gas in the gas recovery unit has been fully collected. First, the pressure of the sealing bag 1.1.2 in the negative pressure bag 1.1 is changed to a negative pressure state by an external negative pressure pump in the detachable sealing valve. And then controlling the first electromagnetic valve to control the disconnection of the two transverse pipelines in the three-way connecting pipe 1.2. Then, the negative pressure duct 1.1.4 of the negative pressure bag 1.1 is inserted into the longitudinal duct. At this time, the opening ends 1.4.2 of the two valve cores 1.4 are in contact with each other, and the valve cores 1.4 move towards the first valve core hole 1.1.3 of the negative pressure pipeline 1.1.4 and the second valve core hole 1.2.3 on the longitudinal pipeline respectively under the limiting action of the external thrust and the elastic limiting piece 1.5. When the vent holes 1.4.3 on the two sides of the valve core 1.4 are respectively exposed out of the first valve core hole 1.1.3 of the negative pressure pipeline 1.1.4 and the second valve core hole 1.2.3 on the longitudinal pipeline, the negative pressure bag 1.1 is communicated with the three-way connecting pipe 1.2. At this time, the gas in the three-way connecting pipe 1.2 is sucked into the sealing bag 1.1.2 under the action of the negative pressure bag 1.1. At this time, the second magnetic member 1.7 in the longitudinal pipeline in the three-way pipe connecting pipe and the first magnetic member 1.6 in the negative pressure pipeline 1.1.4 in the negative pressure bag 1.1 attract each other, so that the relative movement between the longitudinal pipeline in the three-way vent pipe and the negative pressure pipeline 1.1.4 in the negative pressure bag 1.1 is limited. When the negative pressure bag 1.1 and the three-way connecting pipe 1.2 have the same air pressure, the transverse pipes in the three-way connecting pipe 1.2 are respectively separated from the first electromagnetic valve, and the detachable function is realized.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The detachable sealing valve is characterized by comprising a negative pressure bag (1.1), a three-way connecting pipe (1.2) and two first control valves (1.3), wherein the two first control valves (1.3) and the negative pressure bag (1.1) are detachably connected with three connectors of the three-way connecting pipe (1.2) one by one, and a second control valve is arranged at the joint of the negative pressure bag (1.1) and the three-way connecting pipe (1.2).
2. The removable sealing valve according to claim 1, characterized in that said negative pressure bag (1.1) comprises a sealing bag (1.1.2) and a negative pressure pipe (1.1.4) communicating with said sealing bag (1.1.2), said sealing bag (1.1.2) being provided with a closable suction hole (1.1.1), said negative pressure pipe (1.1.4) being sealingly connected with said three-way connection pipe (1.2).
3. The detachable sealing valve according to claim 2, characterized in that said second control valve comprises two valve core assemblies disposed opposite to each other, said valve core assemblies comprise valve cores (1.4) and elastic stoppers (1.5) sleeved outside said valve cores (1.4) for limiting the position of said valve core assemblies, one of the two ends of said valve cores (1.4) is an open end (1.4.2) and the other is a closed end (1.4.1), a vent hole (1.4.3) communicated with the inside of said valve cores (1.4) is disposed on one side of said closed end (1.4.1) on the side wall of said valve cores (1.4), and the open ends (1.4.2) of said two valve core assemblies are abutted.
4. The removable sealing valve according to claim 3, characterized in that the closed end (1.4.1) of said valve core (1.4) is peripherally arranged in a convex manner, one end of said elastic limiting member (1.5) is peripherally connected with said open end (1.4.2), when said valve core (1.4) is in the open state, said closed end (1.4.1) extends into the intermediate communicating cavities of said sealing bag (1.1.4) and said three-way connecting tube (1.2), respectively, and the end of said elastic limiting member (1.5) installed in said negative pressure tube (1.1.4) abuts against said negative pressure bag (1.1) in the compressed state.
5. The removable sealing valve according to claim 4, characterized in that said vent hole (1.4.3) is a one-way hole.
6. The removable sealing valve according to claim 4, characterized in that said three-way connecting tube (1.2) comprises a first tube (1.2.1) having two ends connected to said first control valve (1.3) respectively and a second tube (1.2.2) having one end connected to said first tube (1.2.1) and the other end connected to said negative pressure bag (1.1), said second tube (1.2.2) is sleeved outside said negative pressure tube (1.1.4), and said second tube (1.2.2) is in sealing fit with the outer wall of said negative pressure tube (1.1.4).
7. The removable sealing valve according to claim 6, characterized in that the inner wall of said negative pressure conduit (1.1.4) is provided with a first stop ring whose periphery can be sealingly engaged with the outer wall of said open end (1.4.2), said elastic stop (1.5) located inside said negative pressure conduit (1.1.4) being able to abut against said first stop ring;
the inner wall of the second pipeline (1.2.2) is provided with a second limiting ring, the periphery of the second limiting ring can be in sealing fit with the outer wall of the open hole end (1.4.2), and the elastic limiting part (1.5) in the second pipeline (1.2.2) can be abutted against the second limiting ring.
8. The removable sealing valve according to claim 7, characterized in that the junction of said second duct (1.2.2) and said negative pressure duct (1.1.4) is provided with a sealing ring.
9. The removable sealing valve according to claim 2, characterized in that the connection of said negative pressure pipe (1.1.4) and said three-way connection pipe (1.2) is suction-connected by means of a magnetic structure.
10. The removable sealing valve according to any one of claims 1-9, characterised in that said first control valve (1.3) is an electromagnetic valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121966325.7U CN215487755U (en) | 2021-08-20 | 2021-08-20 | Detachable sealing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121966325.7U CN215487755U (en) | 2021-08-20 | 2021-08-20 | Detachable sealing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215487755U true CN215487755U (en) | 2022-01-11 |
Family
ID=79763617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121966325.7U Active CN215487755U (en) | 2021-08-20 | 2021-08-20 | Detachable sealing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215487755U (en) |
-
2021
- 2021-08-20 CN CN202121966325.7U patent/CN215487755U/en active Active
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