CN203430450U - Bypass valve of petroleum drill pipe - Google Patents
Bypass valve of petroleum drill pipe Download PDFInfo
- Publication number
- CN203430450U CN203430450U CN201320532151.2U CN201320532151U CN203430450U CN 203430450 U CN203430450 U CN 203430450U CN 201320532151 U CN201320532151 U CN 201320532151U CN 203430450 U CN203430450 U CN 203430450U
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- China
- Prior art keywords
- hole
- spool
- bypass valve
- valve body
- spring
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Abstract
The utility model discloses a bypass valve of a petroleum drill pipe. The bypass valve comprises a valve body (7) and a valve element (8). An external tapered threaded connector (6) is arranged on the lower portion of the valve body (7), a through hole is formed in the valve body (7), the upper portion of the through hole is provided with an internal tapered threaded connector (1), the through hole is provided with an annular spring mounting seat (3) located at the lower end of the internal tapered threaded connector (1), a spring (9) is placed on the spring mounting seat (3), the valve element (8) is placed in the through hole and located on the upper portion of the spring (9), the valve element (8) can press the spring (9) to move up and down, a movable baffle (2) is hinged to the upper portion of the valve element (8), and the peripheral face of the valve body (7) further is provided with a bypass hole (4) communicated with the through hole. The bypass valve of the petroleum drill pipe is reasonable and simple in structure, and high in practicability, and the phenomenon that the valve element can not be closed due to insufficient stress is avoided.
Description
Technical field
The utility model relates to a kind of bypass valve, relates in particular the bypass valve that a kind of oil screw rod drilling rod is used.
Background technology
In oil and natural gas industry, need to use a large amount of helicoid hydraulic motors.Helicoid hydraulic motor is comprised of four major parts, is respectively by-pass valve assembly, motor assembly, universal drive shaft assembly and driving-shaft assembly.By-pass valve assembly is assemblied in helicoid hydraulic motor topmost, and first its effect is to connect drill collar or centralizer sub, and it two is that bypass valve core is closed voluntarily when drilling fluid is with pressure while flowing through bypass valve endoporus, and drilling fluid is all for the work of drive screw drilling tool and circulation; After hydraulic pump cuts out, bypass spool up being under spring action opened shape, carries in process on drilling tool, and the drilling fluid in drilling tool is discharged and entered in well by sieve aperture.
Because spool is that pressure by drilling fluid has changed spool and closes and open, when the pressure of drilling fluid is too small, the stressed deficiency of spool, be not enough to the descending closed condition that completes, or stressed deficiency can not be closed fine or timely, thus can not be normally practical, to use, brought inconvenience.
Utility model content
The utility model provides a kind of oil drill rocker bypass valve, has solved the problem that the stressed deficiency of spool of bypass valve cannot normally be closed in the past.
For solving above-mentioned technical problem, the utility model is by the following technical solutions: oil drill rocker bypass valve, comprise valve body and spool, valve body lower portion is provided with outer cone nipple, described valve inner is provided with through hole, through hole top is provided with female cone nipple, described through hole is provided with annular spring mounting seat in female cone nipple lower end, on spring mounting seat, be placed with spring, described spool is placed in through hole and is positioned at spring top, spool compressible spring moves up and down, described spool upper articulation has sideboard, described valve body periphery is also provided with the by-pass prot being communicated with through hole.During work, drilling fluid flows in through hole and forces spool to move downward, Compress Spring, spool is blocked by-pass prot on valve body, and (annular space is led in by-pass prot, annular space refers to be suspended from the space of the tubing string surrounding in well, annular space outer wall can be bore hole or the larger tubing string of external diameter, is sometimes called as annular space), make drilling fluid to dirty.While quitting work, owing to there is no the pressure of drilling fluid, under the effect of spring, spool moves upward, and makes the hole on valve body be communicated with drilling rod inner space and annular space.When spool is descending while closing, sideboard is in level, and to sideboard, pressurization forces spool descending to drilling fluid, avoids spool insufficient pressure and cannot descendingly close, and guarantees the normal use of bypass valve, practical.
Described sideboard is symmetrically arranged with two, leaves circulation gap between described two sideboards.Sideboard is symmetrically arranged with two and makes spool stress equalization, the problem that there will not be unbalance stress and tilt, and be the normal circulation that guarantees drilling fluid, between two sideboards, need to leave circulation gap, facilitate drilling fluid circulation, avoid drilling fluid circulation to stop up not in time.
Circulation gap width between described two sideboards is at least 24 millimeters.In order to avoid sideboard, to drilling fluid, circulation impacts and hinders, guarantee that circulation is smooth and easy, so the circulation gap between two sideboards must be greater than the normal use that a value can meet bypass valve, so the circulation gap between two sideboards of the utility model is at least set as 24 millimeters.
The rotational angle of described sideboard is 0 °-80 °.For guaranteeing the normal use of sideboard, avoid it to be attached to valve core inside and lost efficacy, so the rotational angle of sideboard is decided to be to 0 °-80 °.
Described outer cone nipple outside tapered tread thread root is provided with seal groove.For strengthening the sealing of outer cone nipple and bottom jointed rod or drill bit, in seal groove, add sealing ring, the squeeze pressure by junction compresses sealing ring, raising sealing effectiveness.
Described valve body and spool all adopt 40cr stainless steel.40Cr steel is one of most popular steel of machinery manufacturing industry.After modifier treatment, there is good comprehensive mechanical property, its moderate cost, handling ease can obtain certain toughness, plasticity and abrasion resistance after suitable heat treatment, and intensity is high.
Compared with prior art, the beneficial effects of the utility model are: this oil drill rocker bypass valve of the utility model design, and rational in infrastructure, simple, the situation that there will not be the stressed deficiency of spool to close, practical.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the structural representation of the utility model spool while closing.
Structural representation when Fig. 2 is the unlatching of the utility model spool.
Arrow in figure represent drilling liquid flow to.
Label in figure is: 1, female cone nipple; 2, sideboard; 3, spring mounting seat; 4, by-pass prot; 5, seal groove; 6, outer cone nipple; 7, valve body; 8, spool; 9, spring.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further described.Embodiment of the present utility model includes but not limited to the following example.
Embodiment
Oil drill rocker bypass valve as shown in Figure 1, comprise valve body 7 and spool 8, valve body 7 bottoms are provided with outer cone nipple 6, described valve body 7 inside are provided with through hole, through hole top is provided with female cone nipple 1, described through hole is provided with annular spring mounting seat 3 in female cone nipple 1 lower end, on spring mounting seat 3, be placed with spring 9, described spool 8 is placed in through hole and is positioned at spring 9 tops, spool 8 compressible spring 9 move up and down, described spool 8 upper articulations have sideboard 2, and described valve body 7 peripheries are also provided with the by-pass prot 4 being communicated with through hole.
Described sideboard 2 is symmetrically arranged with two, leaves circulation gap between described two sideboards 2.
Circulation gap width between described two sideboards 2 is at least 24 millimeters.
The rotational angle of described sideboard 2 is 0 °-80 °.
Described outer cone nipple 6 outside tapered tread thread root is provided with seal groove 5.
Described valve body 7 and spool 8 all adopt 40cr stainless steel.
During the utility model work, drilling fluid forces spool 8 to move downward, Compress Spring 9, and spool 8 is blocked the by-pass prot 4 on valve body 7, makes drilling fluid to dirty; While quitting work, owing to there is no the pressure of drilling fluid, under the effect of spring 9, spool 8 moves upward, and makes the by-pass prot 4 on valve body 7 be communicated with drilling rod inner space and annular space.
The utility model is by adding sideboard 2, strengthens the pressure that spool 8 is subject to when closing, and makes that spool is more enough normally closes, practical.
Be as mentioned above embodiment of the present utility model.The utility model is not limited to above-mentioned embodiment, and anyone should learn the structural change of making under enlightenment of the present utility model, every with the utlity model has identical or close technical scheme, within all falling into protection domain of the present utility model.
Claims (6)
1. oil drill rocker bypass valve, comprise valve body (7) and spool (8), valve body (7) bottom is provided with outer cone nipple (6), described valve body (7) inside is provided with through hole, through hole top is provided with female cone nipple (1), it is characterized in that: described through hole is provided with annular spring mounting seat (3) in female cone nipple (1) lower end, on spring mounting seat (3), be placed with spring (9), described spool (8) is placed in through hole and is positioned at spring (9) top, spool (8) compressible spring (9) moves up and down, described spool (8) upper articulation has sideboard (2), described valve body (7) periphery is also provided with the by-pass prot (4) being communicated with through hole.
2. oil drill rocker bypass valve according to claim 1, is characterized in that: described sideboard (2) is symmetrically arranged with two, leaves circulation gap between described two sideboards (2).
3. oil drill rocker bypass valve according to claim 2, is characterized in that: the circulation gap width between described two sideboards (2) is at least 24 millimeters.
4. according to the oil drill rocker bypass valve described in claims 1 to 3 any one, it is characterized in that: the rotational angle of described sideboard (2) is 0 °-80 °.
5. oil drill rocker bypass valve according to claim 1, is characterized in that: described outer cone nipple (6) outside tapered tread thread root is provided with seal groove (5).
6. oil drill rocker bypass valve according to claim 1, is characterized in that: described valve body (7) and spool (8) all adopt 40cr stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320532151.2U CN203430450U (en) | 2013-08-29 | 2013-08-29 | Bypass valve of petroleum drill pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320532151.2U CN203430450U (en) | 2013-08-29 | 2013-08-29 | Bypass valve of petroleum drill pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203430450U true CN203430450U (en) | 2014-02-12 |
Family
ID=50059495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320532151.2U Expired - Fee Related CN203430450U (en) | 2013-08-29 | 2013-08-29 | Bypass valve of petroleum drill pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203430450U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438242A (en) * | 2013-08-29 | 2013-12-11 | 成都科盛石油科技有限公司 | Bypass valve for oil drill pipe |
| CN106894788A (en) * | 2017-03-16 | 2017-06-27 | 中国石油天然气集团公司 | Deepwater drilling drill pipe valve |
-
2013
- 2013-08-29 CN CN201320532151.2U patent/CN203430450U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438242A (en) * | 2013-08-29 | 2013-12-11 | 成都科盛石油科技有限公司 | Bypass valve for oil drill pipe |
| CN106894788A (en) * | 2017-03-16 | 2017-06-27 | 中国石油天然气集团公司 | Deepwater drilling drill pipe 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 |
Granted publication date: 20140212 Termination date: 20140829 |
|
| EXPY | Termination of patent right or utility model |