CN203452696U - Bypass valve for screw drill rod - Google Patents
Bypass valve for screw drill rod Download PDFInfo
- Publication number
- CN203452696U CN203452696U CN201320532300.5U CN201320532300U CN203452696U CN 203452696 U CN203452696 U CN 203452696U CN 201320532300 U CN201320532300 U CN 201320532300U CN 203452696 U CN203452696 U CN 203452696U
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- CN
- China
- Prior art keywords
- hole
- valve body
- spool
- bypass valve
- spring
- 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 bypass valve for a screw drill rod, which comprises a valve body (7) and a valve core (8). The lower part of the valve body (7) is provided with an outer taper thread joint (6); the valve body (7) is internally provided with a through hole; the upper part of the through hole is provided with an inner taper thread joint (1); an annular spring mounting seat (3) is arranged at the lower end of the inner taper thread joint (1) by the through hole; a spring (9) is placed on the spring mounting seat (3); the valve core (8) is placed inside the through hole and located on the upper part of the spring (9); the spring (9) can be compressed to move up and down by the valve core (8); and bypass holes (4) communicated with the through hole are arranged on the circumferential surface of the valve body (7). The bypass valve for a screw drill rod has the advantages that switching on and switching off are flexible, the phenomenon of getting stuck does not happen, the cost is low, and security and practicability are high.
Description
Technical field
The utility model relates to bypass valve, relates in particular the screw rod drilling rod bypass valve that a kind of oil exploitation is used.
Background technology
Bypass valve is contained on the bypass pipe of water intaking valve pipeline section, and in order to the valve of hydraulic pressure before and after water-filling balance water intaking valve, as reducing valve, control valve and Automatic steam trap Trap can install bypass pipe additional conventionally, the valve being arranged on by-pass line is just bypass valve.Bypass valve one word refers to the valve being arranged on by-pass line, but does not refer in particular to valve types and structure.Bypass valve has another name called self-operated type bypass compression difference limen, Self-operated auto-differential control valve.
Screw rod drilling rod bypass valve is the accessory of helicoid hydraulic motor, and its effect is when termination of pumping, to make space in drilling rod be communicated with annular space, and cooling fluid flows to annular space, avoid making a trip and more during bit change the drilling fluid in drill string overflow.Present screw rod drilling rod mostly exists and gets stuck during in opening and closing at valve with bypass valve, and the problem of the switch of can not living, has brought inconvenience to use.
Utility model content
The utility model provides a kind of screw rod drilling rod bypass valve, solved bypass valve in the past underaction, problem of easily getting stuck when switch.
For solving above-mentioned technical problem, the utility model is by the following technical solutions: a kind of screw rod drilling rod 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, and 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.Spool when moving up and down due to spring action can be in time, upper and lower motion flexibly, there will not be stuck phenomenon, flexibility and safety are all improved.
It also includes sieve plate, in the through hole of described sieve plate between female cone nipple and spool.Drilling fluid contains partial impurities, impurities accumulation more at most can blocking valve gate open hole or by-pass prot, has affected the circulation of valve integral body, and required drilling fluid needs the removal of impurities valve internal of being allowed for access, and drilling fluid is less through sieve plate filtration rear impurity, can reduce the congestion affects of drilling fluid to valve.
The 304 steel matter that described sieve plate adopts plating zinc on surface to process.304 steel are stainless steel materials of a kind of versatility, good antirust property, and price is low, has good stainless decay resistance and good anti intercrystalline corrosion performance.Sieve plate directly contacts with drilling fluid, not only easily gets rusty but also perishable, so adopt 304 steel to extend the application life of sieve plate, its plating zinc on surface makes its chemical property more stable simultaneously, has extended to greatest extent the application life of sieve plate.
Described by-pass prot is provided with four altogether, is circularly and evenly distributed in valve body surface each other.When valve closing, drilling fluid leads to annular space by by-pass prot, avoid making a trip and more during bit change the drilling fluid in drill string overflow, by-pass prot all should arrange four can strengthen drilling liquid flow flux, avoids the drilling fluid circulation in valve through hole to cause not in time the problem that valve internal pressure is too high, drilling fluid is revealed.
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 screw rod drilling rod bypass valve of the utility model design, and not only switch is flexible, there will not be the phenomenon that gets stuck, and cost is low, and safety and practicality are high.
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, sieve plate; 3, spring mounting seat; 4, by-pass prot; 5, seal groove; 6, outer cone nipple; 7, valve body; 8, core; 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
A kind of screw rod drilling rod 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, and described valve body 7 peripheries are also provided with the by-pass prot 4 being communicated with through hole.
It also includes sieve plate 2, in the through hole of described sieve plate 2 between female cone nipple 1 and spool 8.
The 304 steel matter that described sieve plate 2 adopts plating zinc on surface to process.
Described by-pass prot 4 is provided with four altogether, is circularly and evenly distributed each other on valve body 7 surfaces.
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 adopts the retractility of spring 9 to complete the opening and closing of spool 8, not only can clamp flexibly but also not, good seal while closing, drilling fluid can not revealed, and by drilling fluid self pressure as closing power, energy conservation, drilling fluid is also by sieve plate 2 impurity screenings, guaranteed valve body 7 cleaning insides, avoided impurities accumulation to stop up through hole, practicality and safety are good.
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. a screw rod drilling rod 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 valve body (7) periphery is also provided with the by-pass prot (4) being communicated with through hole.
2. a kind of screw rod drilling rod bypass valve according to claim 1, is characterized in that: it also includes sieve plate (2), and described sieve plate (2) is positioned at the through hole between female cone nipple (1) and spool (8).
3. a kind of screw rod drilling rod bypass valve according to claim 2, is characterized in that: the 304 steel matter that described sieve plate (2) adopts plating zinc on surface to process.
4. a kind of screw rod drilling rod bypass valve according to claim 1, is characterized in that: described by-pass prot (4) is provided with four altogether, is circularly and evenly distributed each other on valve body (7) surface.
5. a kind of screw rod drilling rod 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. a kind of screw rod drilling rod 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 |
|---|---|---|---|
| CN201320532300.5U CN203452696U (en) | 2013-08-29 | 2013-08-29 | Bypass valve for screw drill rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320532300.5U CN203452696U (en) | 2013-08-29 | 2013-08-29 | Bypass valve for screw drill rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203452696U true CN203452696U (en) | 2014-02-26 |
Family
ID=50132581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320532300.5U Expired - Fee Related CN203452696U (en) | 2013-08-29 | 2013-08-29 | Bypass valve for screw drill rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203452696U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437728A (en) * | 2013-08-29 | 2013-12-11 | 成都科盛石油科技有限公司 | Bypass valve for screw drill rod |
| WO2019079946A1 (en) * | 2017-10-23 | 2019-05-02 | 盐城市锦瑞石油机械有限公司 | Bypass valve structure for oil screw drill |
-
2013
- 2013-08-29 CN CN201320532300.5U patent/CN203452696U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437728A (en) * | 2013-08-29 | 2013-12-11 | 成都科盛石油科技有限公司 | Bypass valve for screw drill rod |
| WO2019079946A1 (en) * | 2017-10-23 | 2019-05-02 | 盐城市锦瑞石油机械有限公司 | Bypass valve structure for oil screw drill |
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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: 20140226 Termination date: 20140829 |
|
| EXPY | Termination of patent right or utility model |