CN101265790B - Hydraulic control security valve - Google Patents
Hydraulic control security valve Download PDFInfo
- Publication number
- CN101265790B CN101265790B CN2008101049166A CN200810104916A CN101265790B CN 101265790 B CN101265790 B CN 101265790B CN 2008101049166 A CN2008101049166 A CN 2008101049166A CN 200810104916 A CN200810104916 A CN 200810104916A CN 101265790 B CN101265790 B CN 101265790B
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- valve
- end cap
- boss
- axis
- piston
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Abstract
The invention discloses a hydraulic controlling safety valve, which comprises an external shell. Two level axle holes and an axle hole of the sucker rod are arranged inside the external shell; a flap main valve core provided with a sealing part, a thrust piston with boss and a main end cover pressed on the axle end of the first level axle hole are symmetrically arranged sideways in the first level axle hole; a main spring is arranged on the piston rod between one side of the boss on the thrust piston and the main end cover; an oil-guide groove and an auxiliary oil-guide groove are arranged on the front end and the back end of the sleeve respectively; an axle hole boss, an auxiliary piston and an auxiliary end cover pressed on the axle end of the second level axle hole are symmetrically arranged in sequence in the second level axle hole, and a spring is arranged between the axle hole boss and the auxiliary piston. The safety valve adopting the valve can close the annular space between the well bore and the sucker rod reliably after controlling the pressure release, and at the same time, the hydraulic controlling safety valve can indicate the on/off state of the valve core, control the motor to stop indirectly outside the valve, and avoid grinding and breaking the rotating sucker rod after the valve core is closed.
Description
Technical field
The present invention relates to a kind of safety valve, relate in particular to a kind of hydraulic control security valve.
Background technology
The dynamic sealing device bearing capacity that surface driving bar driven screw pump drive unit uses is limited, damages easily when big ups and downs appear in the well hydraulic coupling, causes crude oil leak outside severe contamination equipment and environment.Well mouth release valve is a well-control equipment important in the oil production equipment, is equipped with the control corresponding system, can play effective control function to blowout, well kick, and the power unit of protection valve top is avoided damaging.The well mouth release valve of The field mostly is manually at present, gate valve surges, can't adapt to the sucker rod that is positioned at the well head center for surface driving bar driven screw pump, and subsidiary safety valve all is manual operation on the existing screw pump driver, there is the spool translational speed slow, poor reliability, labour intensity is big, can not attachment security valve automatic control system etc. shortcoming, still do not have the hydraulically-controlled type safety valve that can be applicable to surface driving bar driven screw pump at present.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of and be suitable for that surface driving bar driven screw pump uses, after controlled pressure discharges, can reliably close a kind of hydraulic control security valve of annular space between pit shaft and the sucker rod.
Another object of the present invention is to provide a kind of a kind of hydraulic control security valve that the on off state of spool can be indicated in the valve outside and control the motor shutdown indirectly.
A kind of hydraulic control security valve of the present invention, it comprises shell body, have in the described shell body first horizontal shaft hole that axis is set parallel to each other and second horizontal shaft hole and with the vertically disposed sucker rod axis hole of described first and second horizontal shaft holes, with described and the axis vertically disposed sucker rod axis hole of first and second horizontal shaft holes is axis of symmetry symmetrical lobe main valve plug that seal is housed on it that is equipped with respectively successively in described first horizontal shaft hole, be provided with the thrust piston of boss, be pressed in the main end cap of the described first horizontal shaft hole axle head, on boss one side of described thrust piston and the piston rod between the described main end cap, a main spring is housed, in the opposite side of described thrust piston boss and first horizontal shaft hole between the described main valve plug, be inserted with a sleeve with oil cylinder before between a described lobe main valve plug and described sleeve, forming, oil cylinder in the middle of boss one side of described sleeve and thrust piston forms, between described thrust piston boss opposite side and main end cap, form the back oil cylinder, in the oil cylinder of described back, be provided with outlet valve, described main end cap is provided with outlet valve, has oil guide groove in the front and back end of described sleeve, secondary oil guide groove; With the axis of described vertical axis hole is axis of symmetry being disposed with axis hole boss, auxiliary piston, being pressed in the secondary end cap of the described second horizontal shaft hole axle head of symmetry in described second horizontal shaft hole, between described axis hole boss and auxiliary piston, auxiliary spring is housed, for pressure conduction oil cylinder, on a described secondary end cap, a unidirectional fuel feeding valve is housed between described auxiliary piston and the secondary end cap; The valve hydraulic control pipeline that links to each other with the safety valve hydraulic control system links to each other with the middle oil cylinder of valve both sides by described two oil guide groove respectively, pressure conduction oil cylinder links to each other with symmetrically arranged two preceding oil cylinders by first hydraulic line, links to each other with oil cylinder after symmetrically arranged two via described two secondary oil guide groove respectively by second hydraulic line simultaneously.
Adopt a kind of hydraulic control security valve of the present invention; after discharging, controlled pressure can reliably close the annular space between pit shaft and the sucker rod; simultaneously can the on off state of the outside indication of valve spool and indirectly the control motor shut down, the sucker rod of rotation is rubbed after avoiding spool to close.
Description of drawings
Fig. 1 is a kind of hydraulic control security valve structural profile schematic diagram of the present invention;
Schematic diagram when Fig. 2 is a valve open shown in Figure 1;
Schematic diagram when Fig. 3 is a valve closing shown in Figure 1;
Fig. 4 is the phantom drawing of the main valve plug rubber seal of safety valve shown in Figure 1.
The specific embodiment
Below in conjunction with accompanying drawing and true body embodiment the present invention is done to describe in detail.
A kind of hydraulic control security valve of the present invention as shown in drawings, it comprises shell body 24, two horizontal shaft holes that have in the described shell body that axis is set parallel to each other and the sucker rod axis hole that is provided with the axis normal of described horizontal shaft hole, axis with described sucker rod axis hole is axis of symmetry symmetrical lobe main valve plug 16 that seal 18 is housed on it that is equipped with respectively successively in described first horizontal shaft hole, be provided with the thrust piston 12 of boss, be pressed in the main end cap 9 of the described first horizontal shaft hole axle head, on boss one side of described thrust piston 12 and the piston rod between the described main end cap 9, a main spring 11 is housed, in the opposite side of described thrust piston boss and first horizontal shaft hole between the described main valve plug 16, is inserted with a sleeve 14 with oil cylinder 15 before between a described lobe main valve plug 16 and described sleeve 14, forming, oil cylinder 13 in the middle of boss one side of described sleeve 14 and thrust piston forms, between described thrust piston boss opposite side and main end cap, form the back oil cylinder
10, in the oil cylinder 10 of described back, be provided with outlet valve 19, described main end cap 9 is provided with outlet valve 7, has oil guide groove 25, secondary oil guide groove 26 in the front and back end of described sleeve; With the axis of described vertical axis hole is axis of symmetry being disposed with axis hole boss, auxiliary piston 6, being pressed in the secondary end cap 5 of the described second horizontal shaft hole axle head of symmetry in described second horizontal shaft hole, between described axis hole boss and auxiliary piston 6, auxiliary spring 8 is housed, for pressure conduction oil cylinder 4, a unidirectional fuel feeding valve 21 is housed on a described secondary end cap between described auxiliary piston and the secondary end cap; The valve hydraulic control pipeline that links to each other with the safety valve hydraulic control system links to each other with the middle oil cylinder 13 of valve both sides by described two oil guide groove, pressure conduction oil cylinder 4 links to each other with symmetrically arranged two preceding oil cylinders 15 by first hydraulic line, links to each other with oil cylinder 10 after symmetrically arranged two via described two secondary oil guide groove respectively by second hydraulic line simultaneously.When use at the scene of reality, middle oil cylinder 13 is connected in the safety valve hydraulic control system by hydraulic line, valve is a normally open when making hydraulic oil in this oil cylinder apply certain pressure, main spring 11 is compressed, two lobe main valve plugs 16 are opened, before and after in-oil cylinder working hydraulic pressure oil be pressed into pressure conduction oil cylinder 4 by hydraulic line 22,23 independently, auxiliary piston 6 is with auxiliary spring 8 compressions, storage potential energy simultaneously.During oil well production, the valve of unlatching can rotate sucker rod smoothly, and the well hydraulic coupling can conduct to the pressure samples mouth of this safety valve top smoothly by the annular space between tube wall and the sucker rod simultaneously, for oil well pressure is monitored the condition created in real time.Preferred axis and described two Triaxial holes that the horizontal shaft hole axis be arranged in parallel of in described shell body, having, each end at described Triaxial hole two ends is respectively arranged with an end cap 1, in described Triaxial hole, the manual-lock valve is housed, described manual-lock valve comprises two threaded screw rods 3, link to each other with described two threaded screw rods 3 two each other can compression fit valve body 2, described valve body 2 can move axially each other along described Triaxial hole by described threaded screw rod 3 can compression fit, adopt the manual-lock valve, be beneficial to the safety factor that increases valve and be convenient to hydraulic control security valve is carried out field maintenance.Seal 18 on the preferred described main valve plug comprises O-ring seal, the laminated structure of a plurality of along continuous straight runs settings that link to each other with described O-ring seal and have semicircle breach on described laminated structure, described O-ring seal and laminated structure are embedded in the described main valve plug 16.
Have main end cap axis hole on described main end cap, the piston rod of described thrust piston can stretch out described main end cap axis hole, the indication valve state.
Explosion-proof travel switch 20 is preferably installed in the described main end cap outside; this explosion-proof travel switch 20 can be connected on the terminal of frequency converter in use; its pivoted arm moves when piston rod is withdrawn; produce the signal controlling frequency converter; indirectly control drives the motor that sucker rod rotates and shuts down, and avoids behind the valve closing sucker rod to continue rotation and causes the accident.
Claims (5)
1. hydraulic control security valve, it comprises shell body, it is characterized in that: have in the described shell body first horizontal shaft hole that axis is set parallel to each other and second horizontal shaft hole and with the vertically disposed sucker rod axis hole of described first and second horizontal shaft holes, with described and the axis vertically disposed sucker rod axis hole of first and second horizontal shaft holes is axis of symmetry symmetrical lobe main valve plug that seal is housed on it that is equipped with respectively successively in described first horizontal shaft hole, be provided with the thrust piston of boss, be pressed in the main end cap of the described first horizontal shaft hole axle head, on boss one side of described thrust piston and the piston rod between the described main end cap, a main spring is housed, in the opposite side of described thrust piston boss and first horizontal shaft hole between the described main valve plug, be inserted with a sleeve with oil cylinder before between a described lobe main valve plug and described sleeve, forming, oil cylinder in the middle of boss one side of described sleeve and thrust piston forms, between described thrust piston boss opposite side and main end cap, form the back oil cylinder, in the oil cylinder of described back, be provided with outlet valve, described main end cap is provided with outlet valve, has oil guide groove in the front and back end of described sleeve, secondary oil guide groove; With the axis of described vertical axis hole is axis of symmetry being disposed with axis hole boss, auxiliary piston, being pressed in the secondary end cap of the described second horizontal shaft hole axle head of symmetry in described second horizontal shaft hole, between described axis hole boss and auxiliary piston, auxiliary spring is housed, for pressure conduction oil cylinder, on a described secondary end cap, a unidirectional fuel feeding valve is housed between described auxiliary piston and the secondary end cap; The valve hydraulic control pipeline that links to each other with the safety valve hydraulic control system links to each other with the middle oil cylinder of valve both sides by described two oil guide groove respectively, pressure conduction oil cylinder links to each other with symmetrically arranged two preceding oil cylinders by first hydraulic line, links to each other with oil cylinder after symmetrically arranged two via described two secondary oil guide groove respectively by second hydraulic line simultaneously.
2. a kind of hydraulic control security valve according to claim 1, it is characterized in that: have axis and described two Triaxial holes that the horizontal shaft hole axis be arranged in parallel in the described shell body, each end at described Triaxial hole two ends is respectively arranged with an end cap, in described Triaxial hole the manual-lock valve is housed.
3. a kind of hydraulic control security valve according to claim 1 is characterized in that: have main end cap axis hole on described main end cap, the piston rod of described thrust piston can stretch out described main end cap axis hole, the indication valve state.
4. a kind of hydraulic control security valve according to claim 1, it is characterized in that: the seal on the main valve plug comprises O-ring seal, the laminated structure of a plurality of along continuous straight runs settings that link to each other with described O-ring seal and have semicircle breach on described laminated structure, described O-ring seal and laminated structure are embedded in the described main valve plug.
5. a kind of hydraulic control security valve according to claim 1 is characterized in that: the described main end cap outside is equipped with explosion-proof travel switch, and the pivoted arm of described explosion-proof travel switch can be pressed mutually to change and be cooperated with the piston rod of described thrust piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101049166A CN101265790B (en) | 2008-04-24 | 2008-04-24 | Hydraulic control security valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101049166A CN101265790B (en) | 2008-04-24 | 2008-04-24 | Hydraulic control security valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101265790A CN101265790A (en) | 2008-09-17 |
| CN101265790B true CN101265790B (en) | 2011-05-11 |
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ID=39988447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101049166A Expired - Fee Related CN101265790B (en) | 2008-04-24 | 2008-04-24 | Hydraulic control security valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101265790B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893128B (en) * | 2010-07-29 | 2011-11-02 | 南通航海机械集团有限公司 | Equivalent cylinder device |
| CN104565506B (en) * | 2015-01-14 | 2017-06-09 | 重庆川仪自动化股份有限公司 | Valve is with double dynamical integrated explosion-proof electrohydraulic actuator |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2991042A (en) * | 1957-07-19 | 1961-07-04 | Acf Ind Inc | Fail-safe through-conduit gate valve |
| US4215749A (en) * | 1979-02-05 | 1980-08-05 | Acf Industries, Incorporated | Gate valve for shearing workover lines to permit shutting in of a well |
| US4809733A (en) * | 1987-04-22 | 1989-03-07 | National-Oilwell | Fail-safe gate valve with separated actuators |
| CN2553138Y (en) * | 2002-07-08 | 2003-05-28 | 张正深 | Screw pump |
| CN1539066A (en) * | 2001-08-09 | 2004-10-20 | ����� | Valve system and method |
| CN2672325Y (en) * | 2003-12-29 | 2005-01-19 | 田澍藩 | Mechanical seal device in ground driven single screw pump speed reducer |
| US6913240B1 (en) * | 1998-06-03 | 2005-07-05 | Halliburton Energy Services, Inc. | Electrohydraulic control unit |
| CN2766032Y (en) * | 2004-12-20 | 2006-03-22 | 中国海洋石油总公司 | Self-sealing type rod and tube safety valve in screw pump oil extraction system |
-
2008
- 2008-04-24 CN CN2008101049166A patent/CN101265790B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2991042A (en) * | 1957-07-19 | 1961-07-04 | Acf Ind Inc | Fail-safe through-conduit gate valve |
| US4215749A (en) * | 1979-02-05 | 1980-08-05 | Acf Industries, Incorporated | Gate valve for shearing workover lines to permit shutting in of a well |
| US4809733A (en) * | 1987-04-22 | 1989-03-07 | National-Oilwell | Fail-safe gate valve with separated actuators |
| US6913240B1 (en) * | 1998-06-03 | 2005-07-05 | Halliburton Energy Services, Inc. | Electrohydraulic control unit |
| CN1539066A (en) * | 2001-08-09 | 2004-10-20 | ����� | Valve system and method |
| CN2553138Y (en) * | 2002-07-08 | 2003-05-28 | 张正深 | Screw pump |
| CN2672325Y (en) * | 2003-12-29 | 2005-01-19 | 田澍藩 | Mechanical seal device in ground driven single screw pump speed reducer |
| CN2766032Y (en) * | 2004-12-20 | 2006-03-22 | 中国海洋石油总公司 | Self-sealing type rod and tube safety valve in screw pump oil extraction system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101265790A (en) | 2008-09-17 |
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Effective date of registration: 20170111 Address after: 100027 Beijing city Dongcheng District Dongzhimen Street No. 6 Patentee after: CNOOC Energy Technology Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee before: China National Offshore Oil Corporation Patentee before: CNOOC Energy Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110511 Termination date: 20190424 |
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| CF01 | Termination of patent right due to non-payment of annual fee |