CN205297470U - Repetitiou switch constant -pressure cycle valve - Google Patents
Repetitiou switch constant -pressure cycle valve Download PDFInfo
- Publication number
- CN205297470U CN205297470U CN201521087507.1U CN201521087507U CN205297470U CN 205297470 U CN205297470 U CN 205297470U CN 201521087507 U CN201521087507 U CN 201521087507U CN 205297470 U CN205297470 U CN 205297470U
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- CN
- China
- Prior art keywords
- urceolus
- wall
- repeatedly
- valve head
- sliding sleeve
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model relates to a repetitiou switch constant -pressure cycle valve, include the urceolus, set up inlet and the liquid outlet of setting in the urceolus bottom on the urceolus top, be close to top department movable sleeve on the outer wall of urceolus and be equipped with the sliding sleeve, be equipped with circulation business turn over liquid hole on the urceolus outer wall of sliding sleeve inboard, the inside fixed spring of liquid outlet presses the cap, and the spring is pressed the top of cap and is passed through the spring -supported ball seat, and the mesopore top of ball seat is equipped with the steel ball, and the fixed level pressure valve head that can follow the lapse of urceolus inner wall is equipped with outer circular conical surface on the top outer wall of ball seat on the top outer wall of level pressure valve head, is equipped with on the overhead side's of constant pressure valve the urceolus inner wall and outer circular conical surface matched with internal cone face, and the inside of level pressure valve head is equipped with into liquid channel. The utility model discloses a repetitiou switch constant -pressure cycle valve novel structure, the inside overdraft automatic balance that goes up of urceolus to realize a lot of of sliding sleeve through the slip sliding sleeve and open, close, satisfy the inside and outside endless needs of tubular column.
Description
Technical field
This utility model relates to one and repeatedly repeatedly switchs constant-pressure circulating valve.
Background technology
Constant pressure valve is a kind of downhole tool used in oilfield oil well, Main Function is that downhole production tubing string or working string need certain pressure could open downward circulation passage, when tubing pressure reduces, circulation passage is automatically switched off, and pressure balances automatically up and down. But existing constant pressure valve structure is simple, performance is not sufficiently stable, multiple switching can not be carried out to realize the needs of tubing string inner-outer circulation, therefore be badly in need of one and both can guarantee that tubing string two-way pressure balanced, multiple switching can be carried out again to what realize tubing string inner-outer circulation and repeatedly repeatedly switch constant-pressure circulating valve.
Utility model content
For solving above-mentioned technical problem, this utility model provides one repeatedly repeatedly to switch constant-pressure circulating valve.
Of the present utility model repeatedly repeatedly switch constant-pressure circulating valve, including urceolus, it is arranged on the inlet on urceolus top and is arranged on the liquid outlet of urceolus bottom, the outer wall of described urceolus is provided with sliding sleeve near top end movable sleeve, outer drum outer wall inside sliding sleeve is provided with circulation liquid inlet/outlet, spring pressure cap is fixed in the inside of described liquid outlet, spring supporting ball seat is passed through on the top of spring pressure cap, the mesopore top of ball seat is provided with steel ball, fixing on the top outer wall of ball seat can along the level pressure valve head of outer tube inner wall slide downward, the top outer wall of level pressure valve head is provided with outer conical surface, outer tube inner wall above level pressure valve head is provided with the internal conical surface matched with outer conical surface, the inside of level pressure valve head is provided with liquid in-out passage, it is threaded connection between level pressure valve head and ball seat.
The contact position of the constant-pressure circulating valve that repeatedly repeatedly switchs of the present utility model, described sliding sleeve and urceolus is provided with some the first sealing rings being fastened on outer drum outer wall.
The constant-pressure circulating valve that repeatedly repeatedly switchs of the present utility model, described spring pressure cap is threadedly attached in inside liquid outlet.
The constant-pressure circulating valve that repeatedly repeatedly switchs of the present utility model, the outer wall of described level pressure valve head is fixed with some second sealing rings.
Compared with prior art the beneficial effects of the utility model are: of the present utility model repeatedly repeatedly switch constant-pressure circulating valve novel structure, outer barrel two-way pressure autobalance, and realize repeatedly the opening of sliding sleeve by slip sliding sleeve, close, meet the needs of tubing string inner-outer circulation, both can guarantee that tubing string two-way pressure balanced, and multiple switching can have been carried out again to realize tubing string inner-outer circulation.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation repeatedly repeatedly switching constant-pressure circulating valve described in this utility model embodiment.
In figure:
1, urceolus; 2, inlet; 3, liquid outlet; 4, sliding sleeve; 5, circulation liquid inlet/outlet; 6, spring pressure cap; 7, spring; 8, ball seat; 9, steel ball; 10, level pressure valve head; 11, outer conical surface; 12, liquid in-out passage; 13, the first sealing ring; 14, the second sealing ring.
Detailed description of the invention
Below in conjunction with drawings and Examples, detailed description of the invention of the present utility model is described in further detail. Following example are used for illustrating this utility model, but are not limited to scope of the present utility model.
As shown in Figure 1, one repeatedly switchs constant-pressure circulating valve repeatedly, including urceolus 1, it is arranged on the inlet 2 on urceolus 1 top and is arranged on the liquid outlet 3 of urceolus 1 bottom, the outer wall of described urceolus 1 is provided with sliding sleeve 4 near top end movable sleeve, urceolus 1 outer wall inside sliding sleeve 4 is provided with circulation liquid inlet/outlet 5, spring pressure cap 6 is fixed in the inside of described liquid outlet 3, the top of spring pressure cap 6 supports ball seat 8 by spring 7, the mesopore top of ball seat 8 is provided with steel ball 9, fixing on the top outer wall of ball seat 8 can along the level pressure valve head 10 of urceolus 1 inwall slide downward, the top outer wall of level pressure valve head 10 is provided with outer conical surface 11, urceolus 1 inwall above level pressure valve head 10 is provided with the internal conical surface matched with outer conical surface 11, the inside of level pressure valve head 10 is provided with liquid in-out passage 12, it is threaded connection between level pressure valve head 10 and ball seat 8.
The constant-pressure circulating valve that repeatedly repeatedly switchs of the present utility model, the contact position of described sliding sleeve 4 and urceolus 1 is provided with some the first sealing rings 13 being fastened on urceolus 1 outer wall.
The constant-pressure circulating valve that repeatedly repeatedly switchs of the present utility model, it is internal that described spring pressure cap 6 is threadedly attached in liquid outlet 3.
The constant-pressure circulating valve that repeatedly repeatedly switchs of the present utility model, the outer wall of described level pressure valve head 10 is fixed with some second sealing rings 14.
The constant-pressure circulating valve that repeatedly repeatedly switchs of the present utility model is when specifically used, top and the bottom of urceolus are connected with tubing string respectively through screw thread, when tubing pressure reaches a definite value (adjustable), steel ball seals up the mesopore of ball seat under the effect of the pressure, promote level pressure valve head to be pressed downward against contracting spring simultaneously, when level pressure valve head is moved to outer barrel reaming position, liquid flows out through liquid outlet. And during tubing pressure reduction, recoil of spring, level pressure valve head resets, and low pressure promotes steel ball to float, and makes two-way pressure balance. When tubing string needs inside and outside circulation, external auxiliary mechanism pushes down on sliding sleeve, opens circulation liquid inlet/outlet, can carry out inner-outer circulation. When needing to close, external auxiliary mechanism upwardly sliding sleeve, closes closed loop liquid inlet/outlet. Sliding sleeve is sealed by the first sealing ring with urceolus.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the premise without departing from this utility model know-why; can also making some improvement and modification, these improve and modification also should be regarded as protection domain of the present utility model.
Claims (4)
1. one kind repeatedly switchs constant-pressure circulating valve repeatedly, including urceolus (1), it is arranged on the inlet (2) on urceolus (1) top and is arranged on the liquid outlet (3) of urceolus (1) bottom, it is characterized in that: the outer wall of described urceolus (1) is provided with sliding sleeve (4) near top end movable sleeve, urceolus (1) outer wall of sliding sleeve (4) inner side is provided with circulation liquid inlet/outlet (5), spring pressure cap (6) is fixed in the inside of described liquid outlet (3), the top of spring pressure cap (6) supports ball seat (8) by spring (7), the mesopore top of ball seat (8) is provided with steel ball (9), fixing on the top outer wall of ball seat (8) can along the level pressure valve head (10) of urceolus (1) inwall slide downward, the top outer wall of level pressure valve head (10) is provided with outer conical surface (11), urceolus (1) inwall of level pressure valve head (10) top is provided with the internal conical surface matched with outer conical surface (11), the inside of level pressure valve head (10) is provided with liquid in-out passage (12), it is threaded connection between level pressure valve head (10) and ball seat (8).
2. according to claim 1 repeatedly repeatedly switch constant-pressure circulating valve, it is characterised in that: the contact position of described sliding sleeve (4) and urceolus (1) is provided with some the first sealing rings (13) being fastened on urceolus (1) outer wall.
3. according to claim 1 repeatedly repeatedly switch constant-pressure circulating valve, it is characterised in that: it is internal that described spring pressure cap (6) is threadedly attached in liquid outlet (3).
4. according to claim 1 repeatedly repeatedly switch constant-pressure circulating valve, it is characterised in that: the outer wall of described level pressure valve head (10) is fixed with some second sealing rings (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521087507.1U CN205297470U (en) | 2015-12-24 | 2015-12-24 | Repetitiou switch constant -pressure cycle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521087507.1U CN205297470U (en) | 2015-12-24 | 2015-12-24 | Repetitiou switch constant -pressure cycle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205297470U true CN205297470U (en) | 2016-06-08 |
Family
ID=56472189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521087507.1U Expired - Fee Related CN205297470U (en) | 2015-12-24 | 2015-12-24 | Repetitiou switch constant -pressure cycle valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205297470U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505560A (en) * | 2017-09-14 | 2019-03-22 | 中国石油天然气股份有限公司 | Throttle constant pressure valve |
-
2015
- 2015-12-24 CN CN201521087507.1U patent/CN205297470U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505560A (en) * | 2017-09-14 | 2019-03-22 | 中国石油天然气股份有限公司 | Throttle constant pressure valve |
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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: 20160608 Termination date: 20201224 |