CN207569281U - The lumen pressure relief of double-piston effect ball valve - Google Patents
The lumen pressure relief of double-piston effect ball valve Download PDFInfo
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- CN207569281U CN207569281U CN201721025062.3U CN201721025062U CN207569281U CN 207569281 U CN207569281 U CN 207569281U CN 201721025062 U CN201721025062 U CN 201721025062U CN 207569281 U CN207569281 U CN 207569281U
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- valve body
- lumen
- line
- ball valve
- double
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Abstract
The utility model discloses a kind of lumen pressure reliefs of double-piston effect ball valve, and including valve body, by-pass line is equipped on valve body, and the lumen of valve body is connected by by-pass line with the upstream line of valve body or downstream line, and by-pass line is equipped with check-valves.The beneficial effects of the utility model are：It can effectively reduce the pressure of ball valve lumen after lumen pressure medium sharply increases.
Description
Technical field
The utility model is related to ball valve technical fields, and in particular to a kind of lumen pressure relief of double-piston effect ball valve.
Background technology
Ball valve is with the advantages that its flow resistance is small, keying is rapid, compact-sized and extensively using coal chemical engineering equipment cinder, coal ash etc.
The collection and discharge of impurity, valve applying working condition is comparatively harsh, and it is generally high-temperature medium to flow through the medium in it, because
This requires valve to have good sealing performance.In existing ball valve, mainly there are the ball valve and dual piston function of single-piston function
Ball valve, and double-piston ball valve is when ball valve is closed, the pressure of lumen is big or pipeline in pressure it is big, the valve seat beginning
It is pushed to sphere eventually, therefore with preferable sealing effect.
It is particularly severe to the sealing performance requirement of valve in the operating mode that some absolutely not allow medium to reveal, and dual-active
Much better than general sealing property of ball valves of sealing property of ball valves are filled in, defined requirement can be reached.On natural gas line, double-piston ball
Valve is by extensive use.Such as " sending in western gas east " engineering that China is implementing, double-piston effect valve play important promotion
Effect.The characteristics of double-piston effect ball valve is because of its two way seal, the medium of lumen can not be automatically drained out, during temperature change can cause
The pressure medium of chamber sharply increases, a series of problems, such as increase so as to cause impaired, the unlatching torque of inner components.
Utility model content
The purpose of this utility model is to provide a kind of lumen pressure relief of double-piston effect ball valve, in lumen medium
Pressure can effectively reduce the pressure of ball valve lumen after sharply increasing.
To achieve the above object, the utility model provides following technical solution：
A kind of lumen pressure relief of double-piston effect ball valve, including valve body, is equipped with by-pass line, bypass pipe on valve body
The lumen of valve body is connected by road with the upstream line of valve body or downstream line, and by-pass line is equipped with check-valves.
Preferably, one end of by-pass line is tightly connected by the lumen of NPT screw threads and valve body, the other end of by-pass line
It is connected by NPT screw threads with the upstream line or downstream line of valve body.
The operation principle of the utility model is：After the middle cavity pressure of valve body reaches setting value, pressure can push by-pass line open
Internal check-valves, pressure are released to by by-pass line in upstream line or downstream line.
The beneficial effects of the utility model are：It can effectively reduce ball valve lumen after lumen pressure medium sharply increases
Pressure.
Description of the drawings
Fig. 1 is the schematic diagram of the utility model.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is further described.Implement below
Example is only used for clearly illustrating the technical solution of the utility model, and the protection model of the utility model cannot be limited with this
It encloses.
The utility model specific implementation technical solution be：
As shown in Figure 1,
A kind of lumen pressure relief of double-piston effect ball valve including valve body 1, is equipped with by-pass line 2 on valve body 1, other
It threads a pipe and 2 the lumen of valve body 1 is connected with the upstream line 3 or downstream line 4 of valve body 1, by-pass line 2 is equipped with check-valves.
One end of by-pass line 2 is tightly connected by the lumen of NPT screw threads and valve body 1, and the other end of by-pass line 2 passes through
NPT screw threads are connected with the upstream line 3 or downstream line 4 of valve body 1.
The operation principle of the utility model is：After the middle cavity pressure of valve body 1 reaches setting value, pressure can push by-pass line open
Check-valves inside 2, pressure are released to by by-pass line 2 in upstream line 3 or downstream line 4.
The beneficial effects of the utility model are：It can effectively reduce ball valve lumen after lumen pressure medium sharply increases
Pressure.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, under the premise of the utility model technical principle is not departed from, several improvements and modifications can also be made, these change
The scope of protection of the utility model is also should be regarded as into retouching.
Claims (1)
1. a kind of lumen pressure relief of double-piston effect ball valve, which is characterized in that including valve body, bypass pipe is equipped on valve body
The lumen of valve body is connected by road, by-pass line with the upstream line of valve body or downstream line, and by-pass line is equipped with check-valves；It is other
The one end threaded a pipe is tightly connected by the lumen of NPT screw threads and valve body, and the other end of by-pass line passes through NPT screw threads and valve body
Upstream line or downstream line be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721025062.3U CN207569281U (en) | 2017-08-16 | 2017-08-16 | The lumen pressure relief of double-piston effect ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721025062.3U CN207569281U (en) | 2017-08-16 | 2017-08-16 | The lumen pressure relief of double-piston effect ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207569281U true CN207569281U (en) | 2018-07-03 |
Family
ID=62697179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721025062.3U Active CN207569281U (en) | 2017-08-16 | 2017-08-16 | The lumen pressure relief of double-piston effect ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207569281U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116336394A (en) * | 2023-05-31 | 2023-06-27 | 成都成高阀门有限公司 | Automatic medium cavity discharging system and self-detection method thereof |
-
2017
- 2017-08-16 CN CN201721025062.3U patent/CN207569281U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116336394A (en) * | 2023-05-31 | 2023-06-27 | 成都成高阀门有限公司 | Automatic medium cavity discharging system and self-detection method thereof |
| CN116336394B (en) * | 2023-05-31 | 2023-07-21 | 成都成高阀门有限公司 | Automatic medium cavity discharging system and self-detection method thereof |
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