CN201972646U - Wellhead protector - Google Patents
Wellhead protector Download PDFInfo
- Publication number
- CN201972646U CN201972646U CN2011200170057U CN201120017005U CN201972646U CN 201972646 U CN201972646 U CN 201972646U CN 2011200170057 U CN2011200170057 U CN 2011200170057U CN 201120017005 U CN201120017005 U CN 201120017005U CN 201972646 U CN201972646 U CN 201972646U
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- CN
- China
- Prior art keywords
- valve seat
- adjusting rod
- piston
- valve
- spool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a wellhead protector comprising a T-shaped valve body which is provided with a main pipe and a branch pipe; the lower end of the main pipe of the valve body is provided with a valve seat, and a valve core which can move relative to the valve seat so as to seal the valve seat; the other side in the main pipe which is over against the valve seat is provided with a piston, a slide sleeve and an adjusting rod; one end of the piston is connected with the valve core through an expansion device, and the other end of the piston is connected with the adjusting rod; the adjusting rod passes through the slide sleeve; a pressure difference device is arranged in the main pipe; the pressure difference device is propped against the slide sleeve through a pin slot so as to position the slide sleeve; when the pressure in the main pipe on the valve core is higher than that outside the main pipe, the valve core tractions the slide sleeve to be separated from the pin slot of the pressure difference device; and the valve core moves towards the direction of the valve seat, so that the valve is closed. The wellhead protector has a compact structure, has the characteristics of accuracy and reliability in automatic closing, convenience in the recovery of work, erosion resistance, corrosion resistance, long service life and the like, is provided with positive and negative impulse functions, is very convenient to apply and has wide scope of application.
Description
Technical field
The utility model relates to a kind of tree protector, relates in particular to a kind of tree protector that is used for the oil gas field working media.
Background technology
Tree protector designs according to the pressure reduction operating principle, generally is installed in the oil gas field well head, is used for the protection of feed-line.
Tree protector of the prior art is to have to be responsible for and the T type valve body of arm, below the person in charge of this valve body valve seat is set, and is provided with the spool that can move relative to valve seat on this valve seat.When fluid pressure that arm enters during greater than the fluid pressure that flows out in being responsible for, the pressure reduction of the two impels spool to move to valve seat, thereby valve-off reaches the purpose of protection well head rear portion pipeline.
But above-mentioned tree protector is complex structure often, and protection pressure reduction is inaccurate; And, the operation that often will just recoil in the current production of hydrocarbons, existing tree protector can't satisfy this requirement, must change dissimilar devices and carry out corresponding just recoil operation.
The utility model content
The utility model provides a kind of tree protector at the drawback of prior art.
Tree protector described in the utility model comprises having and is responsible for and the T type valve body of arm, the person in charge lower end of this valve body be provided with valve seat and the spool that can move relative to valve seat so that piston is set.The relative opposite side of valve seat is provided with piston, slip cap and adjusting rod in the described person in charge, and described piston one end is connected with spool by stretching device, and this piston other end is connected with adjusting rod, and this adjusting rod wore slip cap.Also be provided with Differential Pressure Unit in the described person in charge, this Differential Pressure Unit is replaced slip cap with its cotter way and slip cap is located, pressure in described spool is subjected to being responsible for is during greater than the pressure outside being responsible for, this spool affects slip cap to break away from the cotter way of Differential Pressure Unit, and described spool moves to the valve seat direction and causes valve closing.
In the tree protector described in the utility model, offer boss in the described person in charge, described valve seat one end snaps in boss, and the other end is replaced by a connection piece and fixing with the person in charge, and described connector is threaded with the person in charge.
In the tree protector described in the utility model, described stretching device comprises telescopic and telescopic shaft, and described telescopic is fixedlyed connected with piston, and described telescopic shaft is fixedlyed connected with spool, and described telescopic shaft can move in telescopic.
In the tree protector described in the utility model, described person in charge upper end is provided with connector, is provided with adapter sleeve between this connector and the piston, and described Differential Pressure Unit is set in the adapter sleeve, and described slip cap is arranged in the connector and with the adapter sleeve gap and is connected.
In the tree protector described in the utility model, described connector end face offers and is communicated with slip cap and outside pore, and this pore place is provided with corresponding atmospheric valve.
In the tree protector described in the utility model, described connector end is provided with scale-board, and described adjusting rod end is provided with pointer, and described pointer points to the scale on this scale-board.
In the tree protector described in the utility model, described adjusting rod end is provided with plug, and this plug and adjusting rod are provided with relatively-stationary adjusting cap.
In the tree protector described in the utility model, described connector end is provided with the protective cap that cover is buckled in plug, atmospheric valve and scale-board.
In the tree protector described in the utility model, be provided with bearing in the described connector, described adjusting rod wore described bearing and was connected with piston.
Tree protector described in the utility model, its compact conformation has easy, anti-the washing away and characteristics such as anticorrosive, long service life of closing automatically accurately and reliably, resume work, and has the band function that just recoiling, and uses very convenient and extensive.
Description of drawings
Fig. 1 is the cross-sectional schematic of tree protector described in the utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail, can implements according to this with reference to the manual literal to make those skilled in the art.
As shown in Figure 1; tree protector described in the utility model; comprise T type valve body 18 with the person in charge 31 and arm 32; the person in charge 31 lower ends of this valve body 18 are provided with valve seat 17; valve seat 17 relative opposite sides are provided with piston 19, slip cap 22 and adjusting rod 5 in 31 being responsible for; one end of described piston 19 is connected with spool 14 by stretching device, and the other end of this piston 19 is connected with adjusting rod 5, and this adjusting rod 5 wore slip cap 22.
Be provided with Differential Pressure Unit 10 in the described person in charge 31, this Differential Pressure Unit 10 is replaced the sidewall of slip cap 22 with its cotter way, thereby slip cap 22 is located.But when spool 14 is subjected to being responsible for pressure inside when being responsible for outside pressure, also be that spool 14 is under pressure when poor, spool 14 can move to valve seat 17 directions; This spool 14 is because of being connected with adjusting rod 5 by piston 19 simultaneously, and this adjusting rod 5 is connected with slip cap 22 splines again, so spool 14 drive slip caps 22 move, makes slip cap 22 replacing of Differential Pressure Unit 10 of disengaging and moves to valve seat 17 directions and to cause valve closing.
As shown in Figure 1, described stretching device comprises telescopic 11 and telescopic shaft 12, and described telescopic 11 is fixedlyed connected with piston 19, and described telescopic shaft 12 is fixedlyed connected with spool 14, and described telescopic shaft 12 can move in telescopic 11.Like this, when spool 14 when valve seat 17 moves, drive telescopics 11 by telescopic shaft 12 and also move, and then drive piston 19 and move to valve seat 17 to valve seat 17; When spool 14 when deviating from valve seat 17 directions and move, but because in its indentation telescopic 11, so the piston 19 of fixedlying connected with telescopic 11 is mobile.
Described valve seat 17 is connected as follows with the person in charge 31: offer boss 33 in the person in charge 31, an end of described valve seat 17 snaps in boss 33, and the other end is then replaced by a connection piece 16, thereby makes valve seat 17 and be responsible for 31 relative fixed.The connector 16 here can be responsible for 31 by being threaded.
As shown in Figure 1, be provided with connector 23 in the upper end of being responsible for 31, be provided with adapter sleeve 21 between this connector 23 and the piston 19, described Differential Pressure Unit 10 is set in the adapter sleeve 21, and described slip cap 22 is arranged in the connector 23 and with described adapter sleeve 21 gaps and is connected.Be to have the space between described slip cap 22 and the adapter sleeve 21, described slip cap 22 adapter sleeve 21 relatively slides.
The end face of described connector 23 offers the pore that is communicated with slip cap 22 and outside air, and this pore place is provided with corresponding atmospheric valve 7.When screwing off atmospheric valve 7, slip cap 22 and exterior, but i.e. slip cap 22 homings.
Be sign spool 14 relative valve seat 17 distances, the utility model also is provided with scale-board 25 in the end of connector 12, and described scale-board 25 is the scales with vertical sensing, and this scale-board 25 is fixed in the end of connector 12 by bolt 24.In the end of adjusting rod 5 pointer 6 is set, the scale that this pointer 6 points on the scale-board 25 is with the relative distance of reflection spool 14 with valve seat 17.
End at described adjusting rod 5 also is provided with plug 4, is provided with O-ring seal 3 between this plug 4 and adjusting rod 5 ends, and this plug 4 is provided with relatively-stationary adjusting cap 1 with adjusting rod 5.
For being threaded, the inner chamber of this protective cap 27 is advisable can hold plug 4, atmospheric valve 7, scale-board 25 at the end of described connector 23 and protective cap 27.
Be provided with bearing 9 in described connector 23, described adjusting rod 5 wore described bearing 9 and was connected with piston 19.
When operate as normal, medium is an inlet with the arm 32 of valve body 18, through the annular empty cross section between spool 14 and the valve seat 17, discharges from the person in charge 31 lower ends of valve body 18 at last.
When there is pressure reduction in medium by the annular empty cross section between spool 14 and the valve seat 17 and spool 14 upper surfaces and soffit, this pressure reduction forces spool 14 to move to valve seat 17, thereby makes slip cap 22 break away from replacing of Differential Pressure Unit 10 and drive piston 19 and move and be seated at a sealing position valve-off.
If desire restores to the original state, then need rotate atmospheric valve 7, make slip cap 22 epicoeles and exterior, at this moment, the pressure in the valve body 18 promotes to move on the piston 19, and Differential Pressure Unit 10 is replaced slip cap 22 again and slip cap 22 is located.
When just recoiling operation, then undertaken by following operation:
During the square impact operation, cap 1 is regulated in rotation, makes adjusting rod 5 and connector 23 relative fixed, spool 14 and valve seat 17 also relative fixed, and promptly this moment, tree protector was inoperative, the annular space cross section maximum between spool 14 and the valve seat 17.
During the recoil operation, medium need enter from the person in charge 31 lower ends of valve body 18, and discharges from the arm 32 of valve body 18.At this moment, the pressure that the pressure that the lower surface of spool 14 is subjected to is subjected to greater than its upper surface, this pressure reduction promote spool 14 and move to deviating from valve seat 17 directions, and telescopic shaft 12 is pushed into and shrinks in the cover 12, annular space cross section maximum between spool 14 and the valve seat 17, the carrying out of the operation that helps recoiling.
Tree protector described in the utility model is not only applicable to petroleum gas, is applicable to other liquid or gas too, not only is applicable to the petroleum and petrochemical industry field, also can be widely used in other industry.
Although embodiment of the present utility model is open as above, but it is not restricted to listed utilization in manual and the embodiment, it can be applied to the various fields of the present utility model that are fit to fully, for those skilled in the art, can easily realize other modification, therefore under the universal that does not deviate from claim and equivalency range and limited, the legend that the utility model is not limited to specific details and illustrates here and describe.
Claims (8)
1. tree protector comprises having and is responsible for and the T type valve body of arm, and the person in charge lower end of this valve body is provided with valve seat and can moves and with the spool that valve seat seals, it is characterized in that relative to valve seat:
The relative opposite side of valve seat is provided with piston, slip cap and adjusting rod in the described person in charge, and described piston one end is connected with spool by stretching device, and this piston other end is connected with adjusting rod, and this adjusting rod wore slip cap;
Also be provided with Differential Pressure Unit in the described person in charge, this Differential Pressure Unit is replaced slip cap with its cotter way and slip cap is located, pressure in described spool is subjected to being responsible for is during greater than the pressure outside being responsible for, this spool affects slip cap to break away from the cotter way of Differential Pressure Unit, and described spool moves to the valve seat direction and causes valve closing.
2. tree protector as claimed in claim 1 is characterized in that, offers boss in the described person in charge, and described valve seat one end snaps in boss, and the other end is replaced by a connection piece and fixing with the person in charge, and described connector is threaded with the person in charge.
3. tree protector as claimed in claim 1 is characterized in that described stretching device comprises telescopic and telescopic shaft, and described telescopic is fixedlyed connected with piston, and described telescopic shaft is fixedlyed connected with spool, and described telescopic shaft can move in telescopic.
4. tree protector as claimed in claim 1; it is characterized in that described person in charge upper end is provided with connector, is provided with adapter sleeve between this connector and the piston; described Differential Pressure Unit is set in the adapter sleeve, and described slip cap is arranged in the connector and with the adapter sleeve gap and is connected.
5. tree protector as claimed in claim 4 is characterized in that, described connector end face offers and is communicated with slip cap and outside pore, and this pore place is provided with corresponding atmospheric valve.
6. tree protector as claimed in claim 4 is characterized in that, described connector end is provided with scale-board, and described adjusting rod end is provided with pointer, and described pointer points to the scale on this scale-board.
7. tree protector as claimed in claim 4 is characterized in that, described adjusting rod end is provided with plug, and this plug and adjusting rod are provided with relatively-stationary adjusting cap.
8. tree protector as claimed in claim 7 is characterized in that, described connector end is provided with the protective cap that cover is buckled in plug, atmospheric valve and scale-board.
9. tree protector as claimed in claim 4 is characterized in that, is provided with bearing in the described connector, and described adjusting rod wore described bearing and was connected with piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200170057U CN201972646U (en) | 2011-01-19 | 2011-01-19 | Wellhead protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200170057U CN201972646U (en) | 2011-01-19 | 2011-01-19 | Wellhead protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201972646U true CN201972646U (en) | 2011-09-14 |
Family
ID=44577753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200170057U Expired - Fee Related CN201972646U (en) | 2011-01-19 | 2011-01-19 | Wellhead protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201972646U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726805A (en) * | 2012-10-14 | 2014-04-16 | 盐城华跃石油机械制造有限公司 | Remote intelligent control constant-pressure air release device for sun-generated electric power |
| CN104018799A (en) * | 2014-05-27 | 2014-09-03 | 成都来宝石油设备有限公司 | Well mouth protecting device |
| CN110761739A (en) * | 2018-07-25 | 2020-02-07 | 中国石油天然气股份有限公司 | Pressure relief device and wellhead assembly with same |
-
2011
- 2011-01-19 CN CN2011200170057U patent/CN201972646U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726805A (en) * | 2012-10-14 | 2014-04-16 | 盐城华跃石油机械制造有限公司 | Remote intelligent control constant-pressure air release device for sun-generated electric power |
| CN103726805B (en) * | 2012-10-14 | 2017-12-12 | 江苏华跃石油机械制造有限公司 | A kind of sun-generated electric power long-distance intelligent control level pressure air-bleed device |
| CN104018799A (en) * | 2014-05-27 | 2014-09-03 | 成都来宝石油设备有限公司 | Well mouth protecting device |
| CN110761739A (en) * | 2018-07-25 | 2020-02-07 | 中国石油天然气股份有限公司 | Pressure relief device and wellhead assembly with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110914 Termination date: 20190119 |