CN206346721U - Wellhead over-pressure protector - Google Patents
Wellhead over-pressure protector Download PDFInfo
- Publication number
- CN206346721U CN206346721U CN201621453926.7U CN201621453926U CN206346721U CN 206346721 U CN206346721 U CN 206346721U CN 201621453926 U CN201621453926 U CN 201621453926U CN 206346721 U CN206346721 U CN 206346721U
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- China
- Prior art keywords
- valve
- pressure
- needle
- passage
- valve rod
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model discloses a kind of wellhead over-pressure protector, including valve body（1）, the valve body of three-port structure（1）It is vertically installed on well head, valve body（1）It is provided with valve stem passage（2）, pressure release passage（3）With well head passage（4）, band handwheel（5）Valve rod（6）Valve stem passage is inserted straight down（2）Interior and valve rod（6）Bottom be equipped with needle（7）, needle（7）The valve seat for being arranged right below being matched therewith（8）, described needle（7）On be equipped with butterfly spring（9）, rotation hand wheel（5）Rotation valve rod（6）, make disk spring（9）Move down compression needle（7）And make needle（7）With valve seat（8）Sealing is produced, when safe pressure of the borehole pressure beyond setting, then borehole pressure can push up valve opening pin（7）Pass through pressure release passage（3）Carry out pressure release.Protector of the present utility model can reasonably control well head pressure, reach the purpose of protection well head, improve production efficiency.
Description
Technical field
The utility model is related to technical field of petroleum extraction, and specifically a kind of wellhead over-pressure for oil field shaft mouth is protected
Protect device.
Background technology
Oil field shaft mouth is when needing to carry out fracturing work after producing a period of time, fracturing pump can be pressed into by well head into well
Substantial amounts of fracturing fluid, increases ground layer gap to increase yield.To prevent that pressure increases suddenly in well head, well head, which is held, can't stand.When
All it is to carry out open flow operation using artificial when well head reaches dangerous pressure.Labor strength is added, cost is added.
The content of the invention
The purpose of this utility model is that there is provided one kind in order to solve the trouble of artificial periodic detection, the drawbacks of workload is big
Well head pressure can rationally be controlled, the wellhead over-pressure protector of labor strength is reduced.
The purpose of this utility model is solved by the following technical programs：
A kind of wellhead over-pressure protector, including valve body, it is characterised in that：The valve body of three-port structure is vertically installed at well head
On, valve body is provided with valve stem passage, pressure release passage and well head passage, the valve rod with handwheel insert straight down in valve stem passage and
The bottom of valve rod is equipped with the needle being vertically arranged, and being arranged right below of needle is matched therewith and positioned at well head channel upper
Butterfly spring is equipped with valve seat, described needle, rotation hand wheel rotation valve rod makes disk spring move down compression needle,
So that needle is moved down produces sealing with valve seat, and when safe pressure of the borehole pressure beyond setting, then borehole pressure meeting
Top valve opening pin carries out pressure release by pressure release passage.
The top of the needle and the top of valve seat all cause needle can be in the presence of valve rod provided with elastomeric element
The top of lower motion inserted valve seat.
The upper edge of the valve seat is not higher than the horizontal lower edge of pressure release passage.
Described valve seat is threadedly secured to the top of well head passage.
The top of the needle, which is fixed, to be embedded in the embedding slot of valve rod or the top movable of needle is embedded in valve rod
In embedding slot.
Described stem lower portion outer wall and the inwall of valve stem passage are connected through a screw thread.
Bonnet of the top of the valve stem passage provided with limitation valve rod, the inwall of bonnet and the outer wall of valve stem passage pass through spiral shell
Line is connected.
Position limiting sealed part is provided between the top of the valve stem passage and valve rod.
The utility model has the following advantages compared with prior art：
Wellhead over-pressure protector of the present utility model makes disk spring move down compression by rotation hand wheel rotation valve rod
Needle, is sealed so that needle moves down to produce with valve seat, when safe pressure of the borehole pressure beyond setting, then well internal pressure
Power can push up valve opening pin and carry out pressure release by pressure release passage；The protector structure is compact, easy for installation and simple to operate, can be reasonable
Ground controls well head pressure, and the labor intensity of workman is reduced while having reached protection well head purpose, effectively save production cost,
Improve production efficiency and add economic benefit.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of wellhead over-pressure protector of the present utility model.
Wherein：1-valve body；2-valve stem passage；3-pressure release passage；4-well head passage；5-handwheel；6-valve rod；7—
Needle；8-valve seat；9-disk spring；10-bonnet；11-position limiting sealed part.
Embodiment
The utility model is further described with embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1：A kind of wellhead over-pressure protector, including valve body 1, the valve body 1 of three-port structure are vertically installed at well head
On, valve body 1 is provided with valve stem passage 2, pressure release passage 3 and well head passage 4, and the valve rod 6 with handwheel 5 inserts valve rod and led to straight down
In the road 2 and bottom of valve rod 6 is equipped with the needle 7 being vertically arranged, the top of needle 7 fix be embedded in the embedding slot of valve rod 6,
Or the top movable of needle 7 is embedded in the embedding slot of valve rod 6, being arranged right below of needle 7 is matched therewith and positioned at well
The valve seat 8 on mouth passage 4 top, valve seat 8 is threadedly secured to the upper edge not higher than pressure release of the top of well head passage 4 and valve seat 8
The horizontal lower edge of passage 3, the top of needle 7 and the top of valve seat 8 all cause needle 7 in the effect of valve rod 6 provided with elastomeric element
The top of inserted valve seat 8 can be moved downward down, butterfly spring 9 is equipped with needle 7, and the rotation valve rod 6 of rotation hand wheel 5 makes
Disk spring 9 moves down compression needle 7, so that needle 7 is moved down produces sealing with valve seat 8, when borehole pressure exceeds
During the safe pressure of setting, then borehole pressure can push up valve opening pin 7 and carry out pressure release by pressure release passage 3.
In above-mentioned wellhead over-pressure protector, the bottom outer wall of valve rod 6 and the inwall of valve stem passage 2 are connected through a screw thread；
In bonnet 10 of the top of valve stem passage 2 provided with limitation valve rod 6, the inwall of bonnet 10 passes through screw thread with the outer wall of valve stem passage 2
Connection；And position limiting sealed part 11 is provided between the top of valve stem passage 2 and valve rod 6.
Wellhead over-pressure protector of the present utility model is in use, by rotation hand wheel 5 come regulating valve stem 6, using certain
Power allows disk spring 9 to compress needle 7 so that the seal valve seat 8 of needle 7；When the pressure of well head is more than predetermined reasonable pressure, valve
Pin 7 moves up the carry out pressure release so that pressure release passage 3 is opened, so that well head pressure reduces.
Wellhead over-pressure protector of the present utility model moves down disk spring 9 by the rotation valve rod 6 of rotation hand wheel 5
Needle 7 is compressed, so that needle 7 is moved down produces sealing with valve seat 8, when safe pressure of the borehole pressure beyond setting,
Then borehole pressure can push up valve opening pin 7 and carry out pressure release by pressure release passage 3, so as to effectively protect well head；The protector structure is tight
Gather, it is easy for installation and simple to operate, well head pressure can be reasonably controlled, work is reduced while having reached protection well head purpose
The labor intensity of people, effectively save production cost improves production efficiency and adds economic benefit.
Above example is only explanation technological thought of the present utility model, it is impossible to limit protection model of the present utility model with this
Enclose, it is every according to the utility model proposes technological thought, any change done on the basis of technical scheme each falls within this reality
Within the scope of novel protected；The technology that the utility model is not directed to can be realized by prior art.
Claims (8)
1. a kind of wellhead over-pressure protector, including valve body（1）, it is characterised in that：The valve body of three-port structure（1）It is vertically installed at well
On mouth, valve body（1）It is provided with valve stem passage（2）, pressure release passage（3）With well head passage（4）, band handwheel（5）Valve rod（6）Vertically
It is downwardly into valve stem passage（2）Interior and valve rod（6）Bottom be equipped with the needle being vertically arranged（7）, needle（7）Underface set
It is matched therewith and positioned at well head passage（4）The valve seat on top（8）, described needle（7）On be equipped with butterfly spring（9）,
Rotation hand wheel（5）Rotation valve rod（6）, make disk spring（9）Move down compression needle（7）, so that needle（7）Move down
With valve seat（8）Sealing is produced, when safe pressure of the borehole pressure beyond setting, then borehole pressure can push up valve opening pin（7）Pass through
Pressure release passage（3）Carry out pressure release.
2. wellhead over-pressure protector according to claim 1, it is characterised in that：The needle（7）Top and valve seat（8）
Top all cause needle provided with elastomeric element（7）In valve rod（6）In the presence of can move downward inserted valve seat（8）It is upper
Portion.
3. wellhead over-pressure protector according to claim 1, it is characterised in that：The valve seat（8）Upper edge be not higher than and let out
Pressure passageway（3）Horizontal lower edge.
4. the wellhead over-pressure protector according to claim 1 or 3, it is characterised in that：Described valve seat（8）It is solid by screw thread
It is scheduled on well head passage（4）Top.
5. wellhead over-pressure protector according to claim 1, it is characterised in that：The needle（7）Top fix set
In valve rod（6）Embedding slot in or needle（7）Top movable be embedded in valve rod（6）Embedding slot in.
6. wellhead over-pressure protector according to claim 1, it is characterised in that：Described valve rod（6）Bottom outer wall and valve
Bar passage（2）Inwall be connected through a screw thread.
7. the wellhead over-pressure protector according to claim 1 or 6, it is characterised in that：The valve stem passage（2）Top set
Restricted valve rod（6）Bonnet（10）, bonnet（10）Inwall and valve stem passage（2）Outer wall be connected through a screw thread.
8. the wellhead over-pressure protector according to claim 1 or 6, it is characterised in that：The valve stem passage（2）Top with
Valve rod（6）Between be provided with position limiting sealed part（11）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621453926.7U CN206346721U (en) | 2016-12-28 | 2016-12-28 | Wellhead over-pressure protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621453926.7U CN206346721U (en) | 2016-12-28 | 2016-12-28 | Wellhead over-pressure protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206346721U true CN206346721U (en) | 2017-07-21 |
Family
ID=59323401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621453926.7U Active CN206346721U (en) | 2016-12-28 | 2016-12-28 | Wellhead over-pressure protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206346721U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110617024A (en) * | 2019-10-23 | 2019-12-27 | 东营市三和石油装备有限公司 | Controllable well plugging tool |
| CN111827927A (en) * | 2020-07-08 | 2020-10-27 | 成都天晨压缩机制造有限公司 | Liquid impact prevention device of equipment for gathering and transporting liquid-containing oil wellhead gas in desert oil field |
| CN111827925A (en) * | 2020-08-25 | 2020-10-27 | 中石化汉江石油工程有限公司钻井一公司 | Well head intelligent pressure control protection device for well cementation operation |
-
2016
- 2016-12-28 CN CN201621453926.7U patent/CN206346721U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110617024A (en) * | 2019-10-23 | 2019-12-27 | 东营市三和石油装备有限公司 | Controllable well plugging tool |
| CN111827927A (en) * | 2020-07-08 | 2020-10-27 | 成都天晨压缩机制造有限公司 | Liquid impact prevention device of equipment for gathering and transporting liquid-containing oil wellhead gas in desert oil field |
| CN111827925A (en) * | 2020-08-25 | 2020-10-27 | 中石化汉江石油工程有限公司钻井一公司 | Well head intelligent pressure control protection device for well cementation operation |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |