CN102900859B - Underwater hydraulic driven type flat plate gate valve - Google Patents

Underwater hydraulic driven type flat plate gate valve Download PDF

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Publication number
CN102900859B
CN102900859B CN201210422045.9A CN201210422045A CN102900859B CN 102900859 B CN102900859 B CN 102900859B CN 201210422045 A CN201210422045 A CN 201210422045A CN 102900859 B CN102900859 B CN 102900859B
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CN
China
Prior art keywords
valve
plate
spring
seal
gap
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CN201210422045.9A
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Chinese (zh)
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CN102900859A (en
Inventor
刘文霄
邓平
王定亚
张元洪
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宝鸡石油机械有限责任公司
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Priority to CN201210422045.9A priority Critical patent/CN102900859B/en
Publication of CN102900859A publication Critical patent/CN102900859A/en
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Publication of CN102900859B publication Critical patent/CN102900859B/en

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Abstract

The invention discloses an underwater hydraulic driven type flat plate gate valve, wherein a flow passage is arranged in a valve body; the middle part of the flow passage is provided with a valve seat; a valve plate is arranged in the middle of the valve seat and is provided with a valve plate passage; the valve body is connected with one end of a valve cover; the other end of the valve cover is coaxially connected with a spring cavity shell, a hydraulic cylinder shell and a casing in sequence; a valve rod is arranged in an inner cavity of the spring cavity shell and penetrates through the valve cover to be connected with the valve plate; a limiting cylinder and a spring pressing plate are fixedly sleeved on the valve rod; the bottom end of the spring cavity shell at one end of a sealing pressing cap is provided with a limiting plate; a spring is arranged between the limiting plate and the spring pressing plate; one end of a piston in the inner cavity of the hydraulic cylinder shell is butted against the spring pressing plate, and the other end of the piston is fixedly connected with a super control rod; a pressure relief port is formed on an axis hole of the valve cover; the spring cavity shell is provided with a pressure compensation port; and the hydraulic cylinder shell is provided with a hydraulic inlet and outlet. The device has the advantages of simple structure, good sealing property, high reliability, automatic closing in case of failure and ROV (Remote Operated Vehicle) standby control function.

Description

The driving plate valve of underwater hydraulic

Technical field

The invention belongs to petroleum gas drilling and extracting equipment technical field, relate to the driving plate valve of a kind of underwater hydraulic.

Background technique

Plate valve is conventional block valve, its flow resistance is little, sealing is reliable, life-span is long, widely in Ying Yuqi, liquid medium pipe-line system, especially in marine oil and gas exploration and development, plate valve is widely applied under water in hydrocarbon production system under water, as: subsea production tree, collector and delivery pipe remittance under water, submarine pipeline etc.; In deep water hydrocarbon is produced, owing to cannot manufacturing mechanism directly being operated, can only utilize Subsea Production Control System or ROV(underwater robot) etc. plate valve etc. is under water carried out to telecontrol, therefore, having under water the plate valve of remote control function is hydrocarbon production system vitals under water.

, there is complex structure, manufacture difficulty, control the high not drawback of reliability in existing plate valve under water.

Summary of the invention

The object of this invention is to provide the driving plate valve of a kind of underwater hydraulic, solved structural design, the manufacture more complicated of plate valve under water of the prior art, control the not high enough problem of reliability.

The technical solution adopted in the present invention is, the driving plate valve of a kind of underwater hydraulic, comprises valve body and be fixed on the hydraulic unit driver on valve body,

In described valve body, be vertically arranged with runner, the middle part of runner is provided with valve seat, in the middle of this valve seat, is provided with transversely movable valve plate, has the valve plate passage suitable with runner internal diameter on valve plate, and the valve plate the other end is connected with valve rod;

Described hydraulic unit driver comprises valve gap, valve gap one end is fixedly connected with valve body, the valve gap the other end is coaxially fixedly connected with spring chamber housing, fluid cylinder housing, casing successively, spring chamber housing inner chamber is provided with valve rod, and valve rod is connected with valve plate through valve gap, and on valve rod, fixed cover is equipped with positioning cylinder and spring bearer plate, surface of contact between valve gap and valve rod is provided with combination seal, the spring chamber housing bottom of seal pressure cap one end is provided with limiting board, between limiting board and spring bearer plate, is provided with spring

In fluid cylinder housing inner chamber, piston is installed, push up mutually with spring bearer plate piston one end, and the piston the other end is fixedly connected with override lever, and override lever is passed casing axle center hole, and in override lever, is installed with indicating arm;

Valve gap axle center hole is provided with pressure relief opening; Spring chamber housing is provided with pressure compensation mouth; Fluid cylinder housing is provided with hydraulic pressure and imports and exports.

The invention has the beneficial effects as follows, simple in structure, good seal performance, reliability be high, have that fault is closed automatically and the plate valve under water of the standby control of ROV, realizes from the water surface the telecontrol of production of hydrocarbons under water.

Accompanying drawing explanation

Fig. 1 is that apparatus of the present invention the first structure is in complete shut-down view;

Fig. 2 is that apparatus of the present invention the first structure is in full-gear schematic diagram;

Fig. 3 is that apparatus of the present invention the second structure is in full-gear schematic diagram;

Fig. 4 is that apparatus of the present invention the second structure is in complete shut-down view;

Fig. 5 is the valve base sealing schematic diagram (the X place enlarged view in Fig. 1) in apparatus of the present invention;

Fig. 6 is the valve stem seal schematic diagram (Y place enlarged view in Fig. 3) of apparatus of the present invention the second structure when full-gear;

Fig. 7 is the second structure of the present invention valve stem seal position view one (the Z place enlarged view in Fig. 4) when complete shut-down state;

Fig. 8 is the second structure of the present invention valve stem seal position view two (the Z place enlarged view in Fig. 4) when complete shut-down state.

In figure, 1. valve body, 2. valve plate, 3. valve flowing channel, 4. valve plate passage, 5. seal A, 6. valve gap, 7. valve stem seal, 8. seal pressure cap, 9. seal B, 10. limiting board, 11. pressure compensation mouths, 12. springs, 13. positioning cylinders, 14. valve rods, 15. spring chamber housings, 16. spring bearer plates, 17. sealing C, 18. fluid cylinder housings, 19. piston seal A, 20. piston seal B, 21. casings, 22. indicating arms, 23. override lever, 24. hydraulic pressure are imported and exported, 25. pistons, 26. pressure relief openings, 27. valve seats, 28. sealing cone A, 29. sealing cone B, 30. valve base sealing A, 31. valve base sealing B, 32. floating seal A, 33. floating seal B, 34. floating seal supports.

Embodiment

The driving plate valve structure of underwater hydraulic of the present invention is, comprises valve body 1 and is fixed on the hydraulic unit driver on valve body 1,

As shown in Figure 1, valve body 1 can adopt independently structure, and be connected with miscellaneous equipment by modes such as flanges, or, valve body 1 also can be integrated in miscellaneous equipment (as in production tree under water, the valve body of plate valve is integrated into production tree body conventionally, the valve body and the production tree body that are plate valve can be made as a whole), in valve body 1, be vertically arranged with runner 3, the middle part of runner 3 is provided with the valve seat 27 of upper and lower composite unit structure, in the middle of this valve seat 27, be provided with transversely movable valve plate 2, on valve plate 2, have the valve plate passage 4 that quite (refers to that internal diameter is consistent or internal diameter approaching) with runner 3 internal diameters, valve plate 2 the other ends are connected (also can adopt the modes such as screw thread to connect) with valve rod 14 by T-slot, upper and lower two valve seats 27 are step type with the surface of contact of valve body 1 and contact, on two surface of contact of this step, be respectively arranged with valve base sealing A30 and valve base sealing B31, the local amplification assumption diagram to X position with reference to the X position in Fig. 1 and Fig. 5.

Hydraulic unit driver comprises valve gap 6, valve gap 6 one end are fixedly connected with valve body 1, valve gap 6 the other ends successively with spring chamber housing 15, fluid cylinder housing 18, casing 21 is coaxially fixedly connected with, spring chamber housing 15 inner chambers are provided with valve rod 14, valve rod 14 is connected (also can adopt the modes such as screw thread to connect) through valve gap 6 by T-shaped groove with valve plate 2, on valve rod 14, being set with positioning cylinder 13 and spring bearer plate 16 is connected and fixed and is integrated, surface of contact between valve gap 6 and valve rod 14 is provided with combination seal, the first combination seal form (is shown in Fig. 1, Fig. 2) comprise valve stem seal 7 and seal pressure cap 8, valve stem seal 7 is for seal valve inner high voltage fluid, spring chamber housing 15 bottoms of seal pressure cap 8 one end are provided with limiting board 10, between limiting board 10 and spring bearer plate 16, be provided with spring 12,

In fluid cylinder housing 18 inner chambers, piston 25 is installed, (contact) pushed up mutually with spring bearer plate 16 in piston 25 one end, piston 25 the other ends are fixedly connected with override lever 23, override lever 23 is through casing 21 axle center holes, and in override lever 23, be installed with indicating arm 22, at casing 21 circle walls, longitudinally have indicating arm groove, indicating arm 22 stretches out indicating arm groove; When piston 25 moves to left, positioning cylinder 13 moves to left while touching limiting board 10, and valve plate 2 terminations move left to the end, and valve plate passage 4 longitudinally connects with runner 3, and now indicating arm 22 is positioned at indicating arm groove high order end;

Valve body 1 is provided with sealing A5 with valve gap 6 surface of contact, for seal valve inner high voltage fluid; Valve gap 6 is provided with sealing cone B29 towards the axle center hole edge of valve body 1, valve rod 14 is provided with sealing cone A28, the cone angle of sealing cone A28 is consistent or smaller with sealing cone B29 cone angle, and when valve plate 2 is closed, two conical surfaces can pressing form reliable metal to metal seal; Valve gap 6 axle center holes are provided with pressure relief opening 26, and releasing pressure automatically while reaching early warning value for spring chamber internal pressure is avoided the destruction of high pressure to spring chamber and compensation liquid system, and this pressure relief opening 26 can also be for injecting seal gease; Spring chamber housing 15 is provided with pressure compensation mouth 11, and the compensation liquid system connectivity of this pressure compensation mouth 11 and control system, to avoid spring chamber internal pressure to occur affecting compared with large fluctuation the motion of piston 25; Fluid cylinder housing 18 is provided with hydraulic pressure and imports and exports 24, hydraulic pressure imports and exports 24 for controlling the turnover of liquid, in fluid cylinder housing 18, be provided with piston seal A19 and piston seal B20, piston seal A19 and piston seal B20 are positioned at hydraulic pressure and import and export 24 both sides, for sealing the control liquid of being imported and exported 24 inputs by hydraulic pressure; Spring chamber housing 15 is provided with sealing B9 with the surface of contact of valve gap 6, and spring chamber housing 15 is provided with sealing C17 with the surface of contact of fluid cylinder housing 18, and sealing B9 and sealing C17 are used for avoiding seawater to immerse or spring chamber internal pressure compensation liquid leaks outside.

Between valve gap 6 and valve body 1, adopt flange to be connected, or adopt card hub mode to realize connection.

Spring 12 adopts a cylindrically coiled spring, or adopts the combination of a plurality of cylindrically coiled springs, also can adopt the spring of combination butterfly spring or other form.

Indicating arm 22, for the open/close state of observe and decide valve, also can be determined by mounting point sensor the open/close state of valve.

Override lever 23 is standby control, under case of emergency, can utilize the promotion override lever 23 such as the ROV lower plate valve of fetching boiling water.

Valve base sealing B31 has enough elastic force, and valve seat 27 and the tight pressing of valve plate 2 are formed to reliable metal to metal seal.

The working procedure of apparatus of the present invention is,

In the time of need to fetching boiling water lower plate valve, the high voltage control liquid of control system is imported and exported 24 from hydraulic pressure and is entered fluid cylinder housing 18 inner chambers, piston 25 moves to left and promotes spring bearer plate 16, positioning cylinder 13, valve rod 14 and valve plate 2 to left movement, when contacting with limiting board 10, positioning cylinder 13 left ends are restricted, motion left stops, now the valve plate passage on valve plate 24 and valve flowing channel 3 complete matchings, valve open, outside can be positioned at high order end position from indicating arm 22 to be determined, as shown in Figure 2.When piston 25 promotes spring bearer plate 16 grades to left movement, spring 12 is compressed, 15 of spring bearer plate 16 and spring chamber housings are gapped, spring intracavity liquid can flow left and right, meanwhile, the compensation liquid system connectivity of pressure compensation mouth 11 and control system, when piston 25 enters spring chamber, the compensation liquid system that partially liq can ramp metering system in spring chamber, thus the fluctuation of spring chamber internal pressure avoided.Meanwhile, plate valve is provided with override lever 23 under water, when hydraulic system (as: occurring hydraulic fault etc.) cannot be opened valve, can utilize ROV to promote override lever 23 left and open valve, then with instrument by locking valve in full-gear.

In the time of need to closing under water plate valve, lay down hydraulic pressure and import and export 24 hydraulic pressure, spring 12 self-resettings that are compressed, promote spring bearer plate 16, positioning cylinder 13, valve rod 14 and valve plate 2 and move right, until the sealing cone A28 on valve rod 14 is restricted when sealing cone B29 on valve gap 6 contacts compression, motion to the right stops, now the valve plate passage on valve plate 24 staggers completely with valve flowing channel 3, valve closing, outside can be positioned at low order end position from indicating arm 22 to be determined, as shown in Figure 1.In valve closing process, piston 25 exits spring chamber and the compensation liquid of control system flows into spring chambers by pressure compensation mouth 11, avoids producing in spring chamber the fluctuation of pressure.After valve closing, valve base sealing B31 can produce enough elastic force, by valve seat 27 and valve plate 2 tightly pressing form reliable metal to metal seal (if pressure difference appears in valve plate both sides, this pressure difference acts on valve plate 2 itself and valve seat 27 is further compressed, and reaches the effect that pressure helps envelope), realize the two way sealed of runner (in Fig. 1, when fluid flows from top to bottom, by valve plate and lower valve seat, form sealing, when fluid flows from the bottom up, by valve plate and top valve seat, form sealing); Meanwhile, during valve closing, the sealing cone A28 on valve rod 14 and the sealing cone B29 of valve gap 6, the tight pressing of meeting, forms reliable metal to metal seal, adds valve stem seal 7, forms the twice reliable sealing of valve rod.Therefore when control system breaks down, while controlling pressure release, valve can be closed under the effect of spring, closes runner, avoids the generation of accident.

With reference to Fig. 3, Fig. 4, Fig. 6, Fig. 7, Fig. 8, the second combination seal of apparatus of the present invention is, omit parts valve stem seal 7 and seal pressure cap 8, valve rod 14 and the contact position of valve gap 6 are corresponding step fit system, between valve gap 6 and valve rod 14, floating seal assembly is set, floating seal assembly structure comprises a floating seal support 34, the outer round surface of floating seal support 34 and valve gap 6 surface of contact are provided with floating seal A32, and the internal circular surfaces of floating seal support 34 and valve rod 14 surface of contact are provided with floating seal B33.

Fig. 3 is the second structure of the present invention, the schematic diagram of valve plate 2 in full-gear; Fig. 4 is the second structure of the present invention, the schematic diagram of valve plate 2 in complete shut-down state.When plate valve is applied to the larger depth of water under water, because valve external hydrostatic pressure acts in override lever 23, form thrust left, stop valve closing, therefore spring, except needs overcome various frictional force, also will overcome the resistance that valve external hydrostatic pressure produces while closing valve, now the rigidity of spring becomes very large, the size of spring is also corresponding becomes very large, causes whole valve size to become large; And in most cases, plate valve internal fluid pressure is far above valve external hydrostatic pressure under water, as make full use of the pressure in valve, can reduce the requirement to spring rate, now, can valve rod 14 and sealing be set to shown in Fig. 6, floating seal assembly is comprised of floating seal support 34, floating seal A32 and floating seal B33, floating seal assembly, when realizing valve rod 14 sealings, also can move left and right along valve rod 14; When plate valve is closed under water as shown in Figure 6;

When valve fluid pressure is during higher than valve external hydrostatic pressure, as shown in Figure 7, floating seal assembly can produce thrust and assist spring to close valve plate valve full-gear under water;

When valve external hydrostatic pressure is during higher than valve fluid pressure, as shown in Figure 8, floating seal assembly can not produce extra resistance to closing valve to plate valve full-gear under water.

The present invention is with its underwater example that is applied as, but also can be applicable to platform or land miscellaneous equipment.

Apparatus of the present invention belong to fail close closed form structure, utilize hydraulic open plate valve under water, after pressure release, by spring reset, realize closing of valve; Meanwhile, this invention can be also that fault is opened type, utilizes hydraulic pressure to close plate valve under water, after pressure release, by spring reset, realizes opening of valve.

The driving plate valve of underwater hydraulic of the present invention, adopts hydraulic driving to open plate valve, and after hydraulic cylinder pressure relief, the spring reset of driver is realized closing of plate valve; After valve closing, valve rod and valve cover chamber form reliable metal to metal seal; When valve flowing channel internal pressure is greater than around hydrostatic pressure, also can utilize floating seal assembly to assist spring-loaded valve door; Simultaneously this under water plate valve be also provided with standby control, can pass through ROV(underwater robot) etc., open plate valve.Can meet under water that telecontrol requires, simple in structure, good seal performance, safety and reliability be high.

Claims (6)

1. the driving plate valve of underwater hydraulic, is characterized in that: comprise valve body (1) and hydraulic unit driver,
In described valve body (1), be vertically arranged with runner (3), the middle part of runner (3) is provided with valve seat (27), in the middle of this valve seat (27), be provided with transversely movable valve plate (2), on valve plate (2), have the valve plate passage (4) suitable with runner (3) internal diameter, valve plate (2) the other end is connected with valve rod (14);
Described hydraulic unit driver comprises valve gap (6), valve gap (6) one end is fixedly connected with valve body (1), valve gap (6) the other end successively with spring chamber housing (15), fluid cylinder housing (18), casing (21) is coaxially fixedly connected with, spring chamber housing (15) inner chamber is provided with valve rod (14), valve rod (14) is connected with valve plate (2) through valve gap (6), the upper fixed cover of valve rod (14) is equipped with positioning cylinder (13) and spring bearer plate (16), surface of contact between valve gap (6) and valve rod (14) is provided with combination seal, spring chamber housing (15) bottom of seal pressure cap (8) one end is provided with limiting board (10), between limiting board (10) and spring bearer plate (16), be provided with spring (12),
In fluid cylinder housing (18) inner chamber, piston (25) is installed, push up mutually with spring bearer plate (16) piston (25) one end, piston (25) the other end is fixedly connected with override lever (23), override lever (23) is passed casing (21) axle center hole, and in override lever (23), is installed with indicating arm (22);
Valve gap (6) axle center hole is provided with pressure relief opening (26);
Spring chamber housing (15) is provided with pressure compensation mouth (11);
Fluid cylinder housing (18) is provided with hydraulic pressure and imports and exports (24).
2. the driving plate valve of underwater hydraulic according to claim 1, is characterized in that:
Described valve body (1) is provided with sealing A(5 with valve gap (6) surface of contact);
Described spring chamber housing (15) is provided with sealing B(9 with the surface of contact of valve gap (6)), spring chamber housing (15) is provided with sealing C(17 with the surface of contact of fluid cylinder housing (18));
In described fluid cylinder housing (18), be provided with piston seal A(19) and piston seal B(20), piston seal A(19) and piston seal B(20) be positioned at hydraulic pressure and import and export (24) both sides;
Described valve gap (6) towards the axle center hole of valve body (1) along being provided with sealing cone B(29), valve rod (14) is provided with sealing cone A(28), sealing cone A(28) cone angle and sealing cone B(29) cone angle is consistent or smaller;
The upper and lower end of described valve seat (27) is step type with the surface of contact of valve body (1) and contacts, and on two surface of contact of this step, is respectively arranged with valve base sealing A(30) and valve base sealing B(31).
3. the driving plate valve of underwater hydraulic according to claim 1, is characterized in that: described combination seal is,
Adopt the compound mode of valve stem seal (7) and seal pressure cap (8);
Or, valve rod (14) is set to corresponding step fit form with the contact position of valve gap (6), between valve gap (6) and valve rod (14), floating seal assembly is set, floating seal assembly structure comprises a floating seal support (34), the outer round surface of floating seal support (34) and valve gap (6) surface of contact are provided with floating seal A(32), the internal circular surfaces of floating seal support (34) and valve rod (14) surface of contact are provided with floating seal B(33).
4. according to the driving plate valve of underwater hydraulic described in claim 1,2 or 3, it is characterized in that: described valve rod (14) is connected with valve plate (2) by T-shaped groove,
Or valve rod (14) adopts and is threaded with valve plate (2).
5. according to the driving plate valve of underwater hydraulic described in claim 1,2 or 3, it is characterized in that: between described valve gap (6) and valve body (1), adopt flange to be connected, or adopt card hub mode to connect.
6. according to the driving plate valve of underwater hydraulic described in claim 1,2 or 3, it is characterized in that: described spring (12) adopts a cylindrically coiled spring, or adopt the combination of a plurality of cylindrically coiled springs, or adopt combination butterfly spring.
CN201210422045.9A 2012-10-29 2012-10-29 Underwater hydraulic driven type flat plate gate valve CN102900859B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210422045.9A CN102900859B (en) 2012-10-29 2012-10-29 Underwater hydraulic driven type flat plate gate valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210422045.9A CN102900859B (en) 2012-10-29 2012-10-29 Underwater hydraulic driven type flat plate gate valve

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CN102900859B true CN102900859B (en) 2014-02-12

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Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103527835A (en) * 2013-10-25 2014-01-22 苏州道森钻采设备股份有限公司 Hydraulic-driven underwater gate valve capable of being driven by ROV
CN105299083B (en) * 2014-06-13 2018-01-16 陕西飞机工业(集团)有限公司 A kind of aircraft override clutch
CN104089077B (en) * 2014-07-04 2016-02-03 中石化石油工程机械有限公司研究院 Hydraulic unit driver, under water gate valve and the controlling method thereof of gate valve under water
CN104595561B (en) * 2015-01-29 2016-10-05 纽威石油设备(苏州)有限公司 Flat gate valve spring hydraulic unit driver
CN104595559B (en) * 2015-01-29 2017-02-22 纽威石油设备(苏州)有限公司 Spring type hydraulic driver
CN104751009B (en) * 2015-04-17 2018-01-12 中石化石油机械股份有限公司研究院 A kind of modeling of underwater flat gate valve frictional force load and analysis method
CN105240593B (en) * 2015-11-19 2018-01-09 中国海洋大学 A kind of solenoid directional control valve
CN106481830B (en) * 2016-11-16 2019-03-29 江苏科技大学 A kind of hydraulic underwater gate valve of high reliability

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WO2009039042A1 (en) * 2007-09-21 2009-03-26 Fisher Controls International Llc Apparatus and methods for manual override operation of a linear actuator
CN201902656U (en) * 2010-11-23 2011-07-20 宝鸡石油机械有限责任公司 Hydraulic driving device of flat plate gate valve under seawater
CN202144876U (en) * 2011-07-26 2012-02-15 天津市圣恺工业技术发展有限公司 Full-lining sliding gate valve

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WO2009039042A1 (en) * 2007-09-21 2009-03-26 Fisher Controls International Llc Apparatus and methods for manual override operation of a linear actuator
CN201902656U (en) * 2010-11-23 2011-07-20 宝鸡石油机械有限责任公司 Hydraulic driving device of flat plate gate valve under seawater
CN202144876U (en) * 2011-07-26 2012-02-15 天津市圣恺工业技术发展有限公司 Full-lining sliding gate valve

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Effective date of registration: 20210112

Address after: 721002 No.2 Dongfeng Road, Jintai District, Baoji City, Shaanxi Province

Patentee after: Baoji Oilfield Machinery Co.,Ltd.

Patentee after: CHINA NATIONAL PETROLEUM Corp.

Patentee after: CNPC national oil and gas drilling equipment Engineering Technology Research Center Co., Ltd

Address before: 721002 No. 2 Dongfeng Road, Shaanxi, Baoji

Patentee before: Baoji Oilfield Machinery Co.,Ltd.