CN210770371U - Natural gas line safety valve - Google Patents
Natural gas line safety valve Download PDFInfo
- Publication number
- CN210770371U CN210770371U CN201921534219.4U CN201921534219U CN210770371U CN 210770371 U CN210770371 U CN 210770371U CN 201921534219 U CN201921534219 U CN 201921534219U CN 210770371 U CN210770371 U CN 210770371U
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- valve
- sleeve
- rod
- threaded pipe
- natural gas
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- Expired - Fee Related
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Abstract
The utility model relates to a natural gas pipeline safety valve, which comprises a valve seat, a valve ball, a valve rod, a sleeve, a rotating rod and a sleeve driving mechanism, wherein the valve seat is connected in a natural gas pipeline, and the valve ball is rotatably arranged in the valve seat; the valve rod is rotatably arranged on the valve seat and is connected with the valve ball; the valve seat is provided with a fixed frame, the rotating rod is rotatably arranged above the valve rod, the sleeve is sleeved at the lower end of the rotating rod and the upper end of the valve rod, and the sleeve driving mechanism is connected with the sleeve to drive the sleeve to move towards the rotating rod or the valve rod; the upper prismatic rod of the valve rod, the lower part of the sleeve and the middle inner wall section are in a polygon shape consistent with the upper end section of the valve rod. The utility model discloses can ensure that the mistake touches and can not open and close the valve, can not cause adverse effect to the field operation.
Description
Technical Field
The field relates to a natural gas pipeline safety valve.
Background
The natural gas pipeline relates to a plurality of valves, and for safety and reliability, the type of the valves is mainly a ball valve which is opened and closed manually; in practical application of the prior art, a valve is opened by mistaken touch, and especially in equipment maintenance, the mistaken touch of the relevant valve can cause serious safety production accidents; therefore, a safety valve capable of preventing the valve from being opened or closed due to the mistaken touch is needed.
Disclosure of Invention
The utility model aims to solve the above problem, provide a natural gas line safety valve, specifically realize by following technical scheme:
a safety valve for a natural gas pipeline comprises a valve seat, a valve ball, a valve rod, a sleeve, a rotating rod and a sleeve driving mechanism, wherein the valve seat is connected in the natural gas pipeline, and the valve ball is rotatably arranged in the valve seat; the valve rod is rotatably arranged on the valve seat and is connected with the valve ball; the valve seat is provided with a fixed frame, the rotating rod is rotatably arranged above the valve rod, the sleeve is sleeved at the lower end of the rotating rod and the upper end of the valve rod, and the sleeve driving mechanism is connected with the sleeve to drive the sleeve to move towards the rotating rod or the valve rod; the upper prismatic rod of the valve rod, the lower part of the sleeve and the middle inner wall section are in a polygon shape consistent with the upper end section of the valve rod.
The natural gas pipeline safety valve is further designed in that the sleeve driving mechanism comprises a first threaded pipe and a second threaded pipe, the first threaded pipe is fixedly arranged in the middle of the upper side of the valve seat and sleeved on the outer side of the valve rod; the first threaded pipe is provided with external threads, the second threaded pipe is provided with internal threads meshed with the first threaded pipe, the second threaded pipe is connected with the sleeve, and the sleeve is driven to move upwards or downwards when the second threaded pipe rotates.
The natural gas pipeline safety valve is further designed in that the middle of the second threaded pipe is connected with a supporting ring, an annular connecting groove is formed in the outer wall of the middle of the sleeve, and the supporting ring is arranged in the connecting groove.
The natural gas pipeline safety valve is further designed in that the upper end of the rotating rod is connected with a rotating handle.
The natural gas pipeline safety valve is further designed in that a limiting plate which is abutted to the upper end of the fixing frame is arranged on the upper portion of the rotating rod.
The beneficial effects of the utility model reside in that:
through the sleeve pipe that sets up but longitudinal movement for the transmission connection relation between dwang and the valve rod can be interrupted, thereby when need not rotate the valve rod, throw off its transmission connection relation with between the dwang and can ensure that the mistake touches and can not open and close the valve, can not cause adverse effect to the field operation.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The invention is further described with reference to the drawings and examples in the following description:
the safety valve for the natural gas pipeline comprises a valve seat 1, a valve ball 2, a valve rod 3, a sleeve 4, a rotating rod 5 and a sleeve driving mechanism 7, wherein the valve seat 1 is connected in the natural gas pipeline, and the valve ball is rotatably arranged in the valve seat; the valve rod 3 is rotatably arranged on the valve seat and is connected with the valve ball; the valve seat is provided with a fixed frame 6, the rotating rod is rotatably arranged above the valve rod, the sleeve 4 is sleeved at the lower end of the rotating rod and the upper end of the valve rod, and the sleeve driving mechanism is connected with the sleeve to drive the sleeve to move towards the rotating rod or the valve rod; the upper prismatic rod of the valve rod, the lower part of the sleeve and the middle inner wall section are in a polygon shape consistent with the upper end section of the valve rod.
When the valve rod is applied, the section of the inner wall of the upper part of the sleeve is circular and has a diameter larger than that of the lower part of the rotating rod, and the sections of the inner walls of the middle part and the lower part of the sleeve are consistent with that of the lower part of the rotating rod, so that when the sleeve moves downwards, the sleeve and the valve rod cannot rotate when the rotating rod rotates; when the sleeve goes upwards, the rotational freedom degrees of the rotating rod and the valve rod are simultaneously restricted by the sleeve, and when the rotating rod rotates, the valve rod rotates; based on this, in order to prevent to touch the meeting start-stop valve of mistake to the dwang, then realize the downward movement sleeve pipe for the rotation of dwang can not transmit to the valve rod.
Through the sleeve pipe that sets up but longitudinal movement for the transmission connection relation between dwang and the valve rod can be interrupted, thereby when need not rotate the valve rod, throw off its transmission connection relation with between the dwang and can ensure that the mistake touches and can not open and close the valve, can not cause adverse effect to the field operation.
Specifically, the sleeve driving mechanism 7 comprises a first threaded pipe 71 and a second threaded pipe 72, wherein the first threaded pipe is fixedly arranged in the middle of the upper side of the valve seat and sleeved outside the valve rod; the first threaded pipe is provided with external threads, the second threaded pipe is provided with internal threads meshed with the first threaded pipe, the second threaded pipe is connected with the sleeve, and the sleeve is driven to move upwards or downwards when the second threaded pipe rotates.
The middle part of the second threaded pipe is connected with a supporting ring 73, the outer wall of the middle part of the sleeve is provided with an annular connecting groove, and the supporting ring is arranged in the connecting groove.
Of course, the upper end of the rotating lever 5 is connected with a rotating handle 51.
The upper part of the rotating rod 5 is provided with a limit plate 52 which is pressed against the upper end of the fixing frame. Ensure that the rotating rod cannot move downwards.
Claims (5)
1. A natural gas pipeline safety valve is characterized by comprising a valve seat, a valve ball, a valve rod, a sleeve, a rotating rod and a sleeve driving mechanism, wherein the valve seat is connected in a natural gas pipeline, and the valve ball is rotatably arranged in the valve seat; the valve rod is rotatably arranged on the valve seat and is connected with the valve ball; the valve seat is provided with a fixed frame, the rotating rod is rotatably arranged above the valve rod, the sleeve is sleeved at the lower end of the rotating rod and the upper end of the valve rod, and the sleeve driving mechanism is connected with the sleeve to drive the sleeve to move towards the rotating rod or the valve rod; the upper prismatic rod of the valve rod, the lower part of the sleeve and the middle inner wall section are in a polygon shape consistent with the upper end section of the valve rod.
2. The natural gas pipeline safety valve according to claim 1, wherein the sleeve driving mechanism comprises a first threaded pipe and a second threaded pipe, the first threaded pipe is fixedly arranged in the middle of the upper side of the valve seat and is sleeved outside the valve rod; the first threaded pipe is provided with external threads, the second threaded pipe is provided with internal threads meshed with the first threaded pipe, the second threaded pipe is connected with the sleeve, and the sleeve is driven to move upwards or downwards when the second threaded pipe rotates.
3. The natural gas pipeline safety valve according to claim 2, wherein a support ring is connected to the middle of the second threaded pipe, an annular connecting groove is formed in the outer wall of the middle of the sleeve, and the support ring is placed in the connecting groove.
4. The natural gas pipeline safety valve of claim 1, wherein a rotating handle is connected to the upper end of the rotating rod.
5. The natural gas pipeline safety valve according to claim 1, wherein a limiting plate abutting against the upper end of the fixing frame is arranged at the upper part of the rotating rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921534219.4U CN210770371U (en) | 2019-09-16 | 2019-09-16 | Natural gas line safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921534219.4U CN210770371U (en) | 2019-09-16 | 2019-09-16 | Natural gas line safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210770371U true CN210770371U (en) | 2020-06-16 |
Family
ID=71050401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921534219.4U Expired - Fee Related CN210770371U (en) | 2019-09-16 | 2019-09-16 | Natural gas line safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210770371U (en) |
-
2019
- 2019-09-16 CN CN201921534219.4U patent/CN210770371U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200616 Termination date: 20210916 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |