CN204041005U - A kind of new gear rack-and-pinion drilling safety valve - Google Patents
A kind of new gear rack-and-pinion drilling safety valve Download PDFInfo
- Publication number
- CN204041005U CN204041005U CN201420497937.XU CN201420497937U CN204041005U CN 204041005 U CN204041005 U CN 204041005U CN 201420497937 U CN201420497937 U CN 201420497937U CN 204041005 U CN204041005 U CN 204041005U
- Authority
- CN
- China
- Prior art keywords
- valve body
- safety valve
- pinion
- drilling safety
- gear rack
- 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
Links
Landscapes
- Mechanically-Actuated Valves (AREA)
- Transmission Devices (AREA)
Abstract
The utility model relates to the device in a kind of drilling process, especially a kind of new gear rack-and-pinion drilling safety valve.The pinion and-rack drilling safety valve of the design, structure is simple, required component are little, thus greatly reduce cost, owing to adopting monolithic valve body, so avoid the many problems in sealing, good seal performance, adopts pinion and-rack type of drive, improves control accuracy, hydraulic coupling provides external impetus, realizes under the action of the spring moving back and forth.Beneficial effect: pinion and-rack drilling safety valve by the size of hydraulic control power, can complete gear rack reciprocating motion, and structure is simple, and parts are less, easily realize, and reduce cost, simultaneously good seal performance, and practicality is very strong.
Description
Technical field
The utility model relates to the device in a kind of drilling process, can facilitate the switch control rule carrying out safety valve accurately.
Background technology
Drilling safety valve belongs to well-control equipment, plays the effect controlling fluid.Drilling safety valve is connected on drilling rod, controls the flowing of drilling fluid, or prevent gushing of shaft bottom liquid in drilling well or trip-out process from causing blowout.When drilling well adopt be top drive time, drilling safety valve can also be used for top and drive, and controls the flowing of drilling fluid.At present, drilling safety valve also exists complex structure, controls not accurate enough, and therefore the shortcoming that cost is higher solves this problem extremely urgent.
Utility model content
The utility model is intended to solve the problem, and in order to simplify structure, accurately controlling, reducing costs, and adopts a kind of brand-new type of drive, designs this drilling safety valve.Its technical scheme adopted is as follows:
New gear rack-and-pinion drilling safety valve, it is characterized in that: comprise upper valve body, extension spring, special tooth bar, spool, flat key, gear, lower valve body, bolt, nut, described upper valve body is connected by threaded drillpipe, bottom is connected with lower valve body by screw bolt and nut, described extension spring is arranged in the cavity of upper valve body, the other end is connected with special tooth bar, described special tooth bar is placed in the cavity of upper valve body, engage with gear, described spool is arranged in the cavity of upper valve body and lower valve body connecting portion.
Above-mentioned upper valve body is sat hydraulic cylinder body, and top is helicitic texture, is used for jointed rod, and bottom is pyramidal structure, and effect coordinates with spool, and junction is designed to flange arrangement, is used for connecting lower valve body.
Above-mentioned special tooth bar one end is cuboid mechanism, and roughness value is very little, and object is connected and sealed with hydraulic cylinder, prevents leakage of oil, and the other end is toothing, carries out rack and pinion engagement with tooth bar.
Above-mentioned spool is by the cone match of the upper and lower conical surface and upper valve body and lower valve body, and one end projecting shaft has keyway, fitting key, transmits the power on gear, realizes Spool rotating, opens clear opening in the middle of spool, allows liquid to pass through.
Above-mentioned lower valve body top is pyramidal structure, and coordinate spool, bottom is helicitic texture, jointed rod, and junction, top is designed to flange arrangement, connects upper valve body.
Beneficial effect: pinion and-rack drilling safety valve by the size of hydraulic control power, can complete gear rack reciprocating motion, and structure is simple, and parts are less, easily realize, and reduce cost, simultaneously good seal performance.
Accompanying drawing explanation
Fig. 1: the overall structure schematic diagram of the utility model pinion and-rack drilling safety valve;
Fig. 2: the overall structure of the utility model pinion and-rack drilling safety valve partly cuts open figure;
Symbol description
1. upper valve body, 2. extension spring, 3. special tooth bar, 4. spool, 5. flat key, 6. gear, 7. descend valve body, 8. bolt, 9. nut.
Detailed description of the invention
Below in conjunction with accompanying drawing and example, the utility model is described in further detail:
As shown in Figure 1-2, the utility model pinion and-rack drilling safety valve, comprise upper valve body (1), extension spring (2), special tooth bar (3), spool (4), flat key (5), gear (6), lower valve body (7), bolt (8), nut (9), described upper valve body (1) is connected by threaded drillpipe, bottom is connected with lower valve body (7) with nut (9) by bolt (8), described extension spring (2) is arranged in the cavity of upper valve body (1), the other end is connected with special tooth bar (3), described special tooth bar (3) is placed in the cavity of upper valve body (1), engage with gear (6), described spool (4) is arranged on upper valve body (1) with in the cavity of lower valve body (7) connecting portion, pinion and-rack drilling safety valve is when normally producing, liquid flows into safety valve from top connection by upper valve body (1), because taper valve core (4) is for often to open shape body, liquid then flows into lower valve body (7) by spool (4), and then in inflow drilling rod, when a failure occurs, ground handling operator opens liquid controling pipe line switch, hydraulic oil enters hydraulic cylinder right-hand member by liquid controling pipe line, promote special tooth bar (3), drive extension spring (2), coordinated by rack-and-pinion, transform linear motion is the rotation of gear (6), thus realize the rotation of spool (4), closing passage, ensure safety effect.When needs reopen safety valve, remove hydraulic coupling, special tooth bar (3) sets back under extension spring (2) effect, can open spool (4).
Preferably, described upper valve body (1) is sat hydraulic cylinder body, and top is helicitic texture, be used for jointed rod, bottom is pyramidal structure, and effect coordinates with spool (4), junction is designed to flange arrangement, is used for connecting lower valve body (7).
Preferably, described special tooth bar (3) one end is cuboid mechanism, and roughness value is very little, and object is connected and sealed with hydraulic cylinder, prevents leakage of oil, and the other end is toothing, carries out rack and pinion engagement with gear (6).
Preferably, described spool (4) is by the cone match of the upper and lower conical surface and upper valve body (1) and lower valve body (7), one end projecting shaft has keyway, flat key (5) is installed, transmit the power on gear (6), realize spool (4) to rotate, in the middle of spool (4), open clear opening, allow liquid to pass through.
Preferably, described lower valve body (7) top is pyramidal structure, and coordinate spool (4), bottom is helicitic texture, jointed rod, and junction, top is designed to flange arrangement, connects upper valve body (1).
Claims (5)
1. new gear rack-and-pinion drilling safety valve, it is characterized in that: comprise upper valve body (1), extension spring (2), special tooth bar (3), spool (4), flat key (5), gear (6), lower valve body (7), bolt (8), nut (9), described upper valve body (1) is connected by threaded drillpipe, bottom is connected with lower valve body (7) with nut (9) by bolt (8), described extension spring (2) is arranged in the cavity of upper valve body (1), the other end is connected with special tooth bar (3), described special tooth bar (3) is placed in the cavity of upper valve body (1), engage with gear (6), described spool (4) is arranged on upper valve body (1) with in the cavity of lower valve body (7) connecting portion.
2. new gear rack-and-pinion drilling safety valve according to claim 1, is characterized in that: upper valve body (1) is sat hydraulic cylinder body, and top is helicitic texture, and bottom is pyramidal structure, and junction is designed to flange arrangement.
3. new gear rack-and-pinion drilling safety valve according to claim 1, it is characterized in that: special tooth bar (3) one end is cuboid mechanism, and roughness value is very little, the other end is toothing.
4. new gear rack-and-pinion drilling safety valve according to claim 1, it is characterized in that: spool (4) is by the cone match of the upper and lower conical surface and upper valve body (1) and lower valve body (7), one end projecting shaft has keyway, opens clear opening in the middle of spool (4).
5. new gear rack-and-pinion drilling safety valve according to claim 1, it is characterized in that: lower valve body (7) top is pyramidal structure, bottom is helicitic texture, and junction, top is designed to flange arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420497937.XU CN204041005U (en) | 2014-08-25 | 2014-08-25 | A kind of new gear rack-and-pinion drilling safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420497937.XU CN204041005U (en) | 2014-08-25 | 2014-08-25 | A kind of new gear rack-and-pinion drilling safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204041005U true CN204041005U (en) | 2014-12-24 |
Family
ID=52241683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420497937.XU Expired - Fee Related CN204041005U (en) | 2014-08-25 | 2014-08-25 | A kind of new gear rack-and-pinion drilling safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204041005U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612627A (en) * | 2015-01-19 | 2015-05-13 | 四川华宇石油钻采装备有限公司 | Oil pipe hanger capable of closing and opening oil pipe passageway |
| CN107461174A (en) * | 2017-09-26 | 2017-12-12 | 西南石油大学 | A kind of storm valve |
-
2014
- 2014-08-25 CN CN201420497937.XU patent/CN204041005U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612627A (en) * | 2015-01-19 | 2015-05-13 | 四川华宇石油钻采装备有限公司 | Oil pipe hanger capable of closing and opening oil pipe passageway |
| CN107461174A (en) * | 2017-09-26 | 2017-12-12 | 西南石油大学 | A kind of storm valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204647337U (en) | A kind of electronic long-range throttle valve | |
| CN203809838U (en) | Novel ball valve and ball valve joint pipeline system | |
| CN204041005U (en) | A kind of new gear rack-and-pinion drilling safety valve | |
| CN102635583A (en) | Combined type flow valve for liquid of high-pressure large-flow alternating current servo direct-drive machine | |
| CN204573296U (en) | The changeable many device for revolving and driving of hand-operated pneumatic | |
| CN202850945U (en) | Compound seal plug valve with automatic-manual dual control function | |
| CN204647500U (en) | The traversing throttle valve of a kind of electric double-way | |
| CN204094186U (en) | High pressure manual hole making drill | |
| CN203322376U (en) | Electrohydraulic control three-way valve easy to seal | |
| CN202832524U (en) | Oil extraction shaft mouth antifreezing sampling device | |
| CN204201243U (en) | Valve control mechanism | |
| CN204163058U (en) | A kind of water conservancy valve opening and closing device | |
| CN204610919U (en) | Pipeline burst self-closing valve | |
| CN204371154U (en) | Shackle device on well head on a kind of oil-well rig | |
| CN202348223U (en) | Automatic shackle-assembling device for anti-spraying plug valve | |
| CN203703264U (en) | Novel vertical type spherical check valve | |
| CN206740298U (en) | A kind of electric operator detection means | |
| CN203050624U (en) | Lifting type tube column internal control tool | |
| CN206220844U (en) | Gravity type helicoid hydraulic motor | |
| CN204252086U (en) | Screw open-close machine | |
| CN204512617U (en) | Gas-liquid linkage actuator | |
| CN203383781U (en) | Plug valve of oil pipe | |
| CN203146877U (en) | Electric and high-pressure cast steel gate valve with oil nozzle | |
| CN203836353U (en) | Hydraulic timing valve | |
| CN204510158U (en) | Strobe monitoring |
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: 20141224 Termination date: 20150825 |
|
| EXPY | Termination of patent right or utility model |