CN102900859A - Underwater hydraulic driven type flat plate gate valve - Google Patents
Underwater hydraulic driven type flat plate gate valve Download PDFInfo
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- CN102900859A CN102900859A CN2012104220459A CN201210422045A CN102900859A CN 102900859 A CN102900859 A CN 102900859A CN 2012104220459 A CN2012104220459 A CN 2012104220459A CN 201210422045 A CN201210422045 A CN 201210422045A CN 102900859 A CN102900859 A CN 102900859A
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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
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 the block valve of commonly using, its flow resistance is little, sealing is reliable, life-span is long, widely in Ying Yuqi, the liquid medium pipe-line system, especially in the marine oil and gas exploration and development, plate valve is widely applied under water in the 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 can't directly operate manufacturing mechanism, can only utilize Subsea Production Control System or ROV(underwater robot) etc. plate valve etc. is under water carried out telecontrol, therefore, having under water the plate valve of remote control function is hydrocarbon production system vitals under water.
There is complex structure in existing plate valve under water, makes difficulty, controls the high not drawback of reliability.
Summary of the invention
The purpose of this invention is to provide the driving plate valve of a kind of underwater hydraulic, solved structural design, the manufacturing more complicated of plate valve under water of the prior art, the not high enough problem of control reliability.
The technical solution adopted in the present invention is, the driving plate valve of a kind of underwater hydraulic comprises valve body and is fixed on hydraulic unit driver on the valve body,
Be vertically arranged with runner in the described valve body, the middle part of runner is equipped with valve seat, is provided with transversely movable valve plate in the middle of this valve seat, has the valve plate passage suitable with the runner internal diameter on the 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 successively with spring chamber housing, fluid cylinder housing, casing is coaxial is fixedly connected with, spring chamber housing inner chamber is provided with valve rod, and valve rod passes valve gap and is connected with valve plate, and fixed cover is equipped with positioning cylinder and spring bearer plate on the valve rod, surface of contact between valve gap and the valve rod is provided with combination seal, the spring chamber housing bottom of seal pressure cap one end is provided with limiting board, is provided with spring between limiting board and the spring bearer plate
In the fluid cylinder housing inner chamber piston is installed, piston one end pushes up mutually with spring bearer plate, and the piston the other end is fixedly connected with override lever, and override lever is passed the casing axle center hole, and is installed with indicating arm on the override lever;
The valve gap axle center hole is provided with pressure relief opening; The spring chamber housing is provided with the pressure compensation mouth; The fluid cylinder housing is provided with hydraulic pressure and imports and exports.
The invention has the beneficial effects as follows that the plate valve under water that simple in structure, good seal performance, reliability be high, have fault autoshutdown and ROV control for subsequent use is realized from the water surface the telecontrol of production of hydrocarbons under water.
Description of drawings
Fig. 1 is that apparatus of the present invention the first structure is in the complete shut-down view;
Fig. 2 is that apparatus of the present invention the first structure is in the full-gear schematic representation;
Fig. 3 is that apparatus of the present invention the second structure is in the full-gear schematic representation;
Fig. 4 is that apparatus of the present invention the second structure is in the complete shut-down view;
Fig. 5 is the valve base sealing schematic representation (the X place enlarged view among Fig. 1) in apparatus of the present invention;
Fig. 6 is the valve stem seal schematic representation (Y place enlarged view in Fig. 3) of apparatus of the present invention the second structure when being in full-gear;
Fig. 7 is the second structure of the present invention valve stem seal position view one (Z place enlarged view among Fig. 4) when being in the complete shut-down state;
Fig. 8 is the second structure of the present invention valve stem seal position view two (Z place enlarged views among Fig. 4) when being in the complete shut-down state.
Among the figure, 1. valve body, 2. valve plate, 3. valve flowing channel, 4. the valve plate passage 5. seals A, 6. valve gap, 7. valve stem seal, 8. seal pressure cap, 9. sealing B, 10. limiting board, 11. pressure compensation mouths, 12. spring, 13. positioning cylinders, 14. valve rods, 15. spring chamber housings, 16. spring bearer plate, 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 opening, 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 hydraulic unit driver on the 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, perhaps, valve body 1 also can be integrated in the miscellaneous equipment (as in the production tree under water, the valve body of plate valve is integrated into the production tree body usually, the valve body and the production tree body that are plate valve can be made as a whole), be vertically arranged with runner 3 in the valve body 1, the middle part of runner 3 is equipped with the up and down valve seat 27 of composite unit structure, be provided with transversely movable valve plate 2 in the middle of this valve seat 27, have the valve plate passage 4 that quite (refers to that namely internal diameter is consistent or internal diameter approaching) with runner 3 internal diameters on the valve plate 2, 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, two valve seats 27 are step type with the surface of contact of valve body 1 and contact up and down, be respectively arranged with valve base sealing A30 and valve base sealing B31 on two surface of contact of this step, with reference to the X position among Fig. 1 and Fig. 5 local amplification assumption diagram to the X position.
Hydraulic unit driver comprises valve gap 6, valve gap 6 one ends 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 coaxial being fixedly connected with, spring chamber housing 15 inner chambers are provided with valve rod 14, valve rod 14 passes valve gap 6 and is connected (also can adopt the modes such as screw thread to connect) with valve plate 2 by T-shaped groove, being set with positioning cylinder 13 and spring bearer plate 16 on the valve rod 14 is connected and fixed and is integrated, surface of contact between valve gap 6 and the valve rod 14 is provided with combination seal, the first combination seal form (is seen Fig. 1, Fig. 2) comprise valve stem seal 7 and seal pressure cap 8, valve stem seal 7 is used for seal valve inner high voltage fluid, spring chamber housing 15 bottoms of seal pressure cap 8 one ends are provided with limiting board 10, be provided with spring 12 between limiting board 10 and the spring bearer plate 16
In fluid cylinder housing 18 inner chambers piston 25 is installed, piston 25 1 ends push up (contact) mutually with spring bearer plate 16, piston 25 the other ends are fixedly connected with override lever 23, override lever 23 is passed casing 21 axle center holes, and be installed with indicating arm 22 on the override lever 23, vertically have the indicating arm groove at casing 21 circle walls, indicating arm 22 stretches out the indicating arm groove; When piston 25 moves to left, positioning cylinder 13 moves to left when touching limiting board 10, and valve plate 2 terminations move left to the end, and valve plate passage 4 vertically connects with runner 3, and indicating arm 22 is positioned at indicating arm groove high order end at this moment;
Valve body 1 is provided with sealing A5 with valve gap 6 surface of contact, is used 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 was 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 when reaching early warning value for the spring chamber internal pressure avoids high pressure to the destruction of spring chamber and compensation liquid system, and this pressure relief opening 26 can also be used 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 affects the motion of piston 25 to avoid the spring chamber internal pressure larger fluctuation to occur; Fluid cylinder housing 18 is provided with hydraulic pressure and imports and exports 24, hydraulic pressure is imported and exported 24 turnover for control liquid, be provided with piston seal A19 and piston seal B20 in the fluid cylinder housing 18, piston seal A19 and piston seal B20 are positioned at hydraulic pressure and import and export 24 both sides, are used for 24 inputs are imported and exported in sealing by hydraulic pressure control liquid; 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.
Adopt flange to be connected between valve gap 6 and the valve body 1, or adopt card hub mode to realize connection.
Indicating arm 22 is used for the open/close state of observe and decide valve, also can determine by the mounting point sensor open/close state of valve.
Override lever 23 is control for subsequent use, under the 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 valve plate 2 tight pressings are formed 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, this moment the valve plate passage 4 and valve flowing channel 3 complete matchings on the valve plate 2, valve open, the outside can be positioned at the 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, the spring intracavity liquid can about flow, simultaneously, the compensation liquid system connectivity of pressure compensation mouth 11 and control system is when piston 25 enters spring chamber, but the compensation liquid system of partially liq ramp metering system in the spring chamber, thereby avoid the fluctuation of spring chamber internal pressure.Simultaneously, plate valve is provided with override lever 23 under water, when hydraulic system (as: hydraulic fault etc. occurring) can't be opened valve, can utilize ROV to promote override lever 23 left and open valve, with instrument locking valve is got final product in full-gear again.
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 the valve rod 14 is restricted when sealing cone B29 on the valve gap 6 contacts compression, motion to the right stops, valve plate passage 4 on the valve plate 2 staggers fully with valve flowing channel 3 at this moment, valve closing, outside can be positioned at the low order end position from indicating arm 22 to be determined, as shown in Figure 1.In the valve closing process, piston 25 withdraws from spring chamber and the compensation liquid of control system flows into spring chambers by pressure compensation mouth 11, avoids producing in the spring chamber fluctuation of pressure.Behind the valve closing, valve base sealing B31 can produce enough elastic force, with valve seat 27 and valve plate 2 tightly pressing form reliable metal to metal seal (if pressure difference appears in the valve plate both sides, this pressure difference acts on itself and valve seat 27 is further compressed, and reaches the effect that pressure helps envelope), realize that the two way sealed of runner is (in Fig. 1, when fluid flows from top to bottom, form sealing by valve plate and lower valve seat, when fluid flows from the bottom up, form sealing by valve plate and top valve seat); Simultaneously, during valve closing, the sealing cone A28 on the 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.Break down so work as control system, during the control 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, the floating seal assembly is set, the 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, and valve plate 2 is in the schematic representation of full-gear; Fig. 4 is the second structure of the present invention, and valve plate 2 is in the schematic representation of complete shut-down state.When plate valve is applied to the larger depth of water under water, because the valve external hydrostatic pressure acts on the override lever 23, form thrust left, stop valve closing, so spring also will overcome the resistance that the valve external hydrostatic pressure produces when closing valve except needs overcome various frictional force, this moment, the rigidity of spring became very large, the size of spring is also corresponding to become very large, causes whole valve size to become large; And in most cases, the plate valve internal fluid pressure is far above the valve external hydrostatic pressure under water, as take full advantage of pressure in the valve, can reduce the requirement to spring rate, at this moment, can valve rod 14 and sealing be set to shown in Figure 6ly, the floating seal assembly is comprised of floating seal support 34, floating seal A32 and floating seal B33, the floating seal assembly also can be along valve rod 14 move left and right when realizing valve rod 14 sealings; When plate valve is closed under water as shown in Figure 6;
When the valve fluid pressure is higher than the valve external hydrostatic pressure, under water the plate valve full-gear as shown in Figure 7, the floating seal assembly can produce thrust and assist spring to close valve;
When the valve external hydrostatic pressure is higher than the valve fluid pressure, under water the plate valve full-gear as shown in Figure 8, the floating seal assembly can not produce extra resistance to closing valve.
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 the pressure release, realize closing of valve by spring reset; Simultaneously, this invention also can be that fault is opened type, utilizes hydraulic pressure to close plate valve under water, after the pressure release, realizes opening of valve by spring reset.
The driving plate valve of underwater hydraulic of the present invention adopts hydraulic driving to open plate valve, and behind the hydraulic cylinder pressure relief, the spring reset of driver is realized closing of plate valve; Behind the valve closing, valve rod and valve cover chamber form reliable metal to metal seal; When valve flowing channel internal pressure during greater than hydrostatic pressure on every side, also can utilize the floating seal assembly to assist the spring-loaded valve door; Simultaneously this under water plate valve also be provided with control for subsequent use, can pass through the ROV(underwater robot) etc., open plate valve.Can satisfy under water that telecontrol requires, simple in structure, good seal performance, safety and reliability be high.
Claims (6)
1. driving plate valve of underwater hydraulic is characterized in that: comprise valve body (1) and hydraulic unit driver,
Be vertically arranged with runner (3) in the described valve body (1), the middle part of runner (3) is equipped with valve seat (27), be provided with transversely movable valve plate (2) in the middle of this valve seat (27), have the valve plate passage (4) suitable with runner (3) internal diameter on the valve plate (2), valve plate (2) the other end is connected with valve rod (14);
Described hydraulic unit driver comprises valve gap (6), valve gap (6) one ends are fixedly connected with valve body (1), valve gap (6) the other end successively with spring chamber housing (15), fluid cylinder housing (18), coaxial being fixedly connected with of casing (21), spring chamber housing (15) inner chamber is provided with valve rod (14), valve rod (14) passes valve gap (6) and is connected with valve plate (2), 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 the valve rod (14) is provided with combination seal, spring chamber housing (15) bottom of seal pressure cap (8) one ends is provided with limiting board (10), is provided with spring (12) between limiting board (10) and the spring bearer plate (16);
In fluid cylinder housing (18) inner chamber piston (25) is installed, piston (25) one ends push up mutually with spring bearer plate (16), piston (25) the other end is fixedly connected with override lever (23), override lever (23) is passed casing (21) axle center hole, and is installed with indicating arm (22) on the override lever (23);
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));
Be provided with piston seal A(19 in the described fluid cylinder housing (18)) 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 is respectively arranged with valve base sealing A(30 on two surface of contact of this step) 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);
Perhaps, 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), the floating seal assembly is set, the 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 claim 1, the driving plate valve of 2 or 3 described underwater hydraulics, it is characterized in that: described valve rod (14) is connected with valve plate (2) by T-shaped groove,
Perhaps, valve rod (14) adopts with valve plate (2) and is threaded.
5. according to claim 1, the driving plate valve of 2 or 3 described underwater hydraulics, it is characterized in that: adopt flange to be connected between described valve gap (6) and the valve body (1), or adopt and block the hub mode and connect.
6. according to claim 1, the driving plate valve of 2 or 3 described underwater hydraulics, it is characterized in that: described spring (12) adopts a cylindrically coiled spring, or adopts the combination of a plurality of cylindrically coiled springs, or adopts the combination butterfly spring.
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| CN201210422045.9A CN102900859B (en) | 2012-10-29 | 2012-10-29 | Underwater hydraulic driven type flat plate gate valve |
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| CN201210422045.9A CN102900859B (en) | 2012-10-29 | 2012-10-29 | Underwater hydraulic driven type flat plate gate valve |
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Cited By (14)
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| 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 |
| CN104089077A (en) * | 2014-07-04 | 2014-10-08 | 中石化石油工程机械有限公司研究院 | Hydraulic drive device of underwater gate valve, underwater gate valve and control method of underwater gate valve |
| CN104595561A (en) * | 2015-01-29 | 2015-05-06 | 纽威石油设备（苏州）有限公司 | Spring type hydraulic driver for flat gate valve |
| CN104595559A (en) * | 2015-01-29 | 2015-05-06 | 纽威石油设备（苏州）有限公司 | Spring type hydraulic driver |
| CN104751009A (en) * | 2015-04-17 | 2015-07-01 | 中石化石油工程机械有限公司研究院 | Modeling and analyzing method for frictional force load of underwater flat gate valve |
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| CN105299083A (en) * | 2014-06-13 | 2016-02-03 | 陕西飞机工业（集团）有限公司 | Override clutch of airplane |
| CN106481830A (en) * | 2016-11-16 | 2017-03-08 | 江苏科技大学 | A kind of high reliability hydraulic pressure underwater gate valve |
| CN109139947A (en) * | 2018-09-19 | 2019-01-04 | 江苏金石机械集团有限公司 | A kind of non-through formula is surged valve piston apparatus |
| CN109237062A (en) * | 2018-11-27 | 2019-01-18 | 美钻深海能源科技研发（上海）有限公司 | A kind of hydraulic valve easily debugged |
| CN110553084A (en) * | 2019-09-12 | 2019-12-10 | 纽威石油设备（苏州）有限公司 | Hydraulic driver for underwater valve |
| CN110617334A (en) * | 2019-09-26 | 2019-12-27 | 浙江绿洲制冷设备有限公司 | Flow regulating valve |
| CN112161075A (en) * | 2020-10-30 | 2021-01-01 | 中国船舶重工集团公司七五O试验场 | Underwater automatic control high-pressure valve |
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| 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 |
| CN105299083A (en) * | 2014-06-13 | 2016-02-03 | 陕西飞机工业（集团）有限公司 | Override clutch of airplane |
| 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 |
| CN104089077A (en) * | 2014-07-04 | 2014-10-08 | 中石化石油工程机械有限公司研究院 | Hydraulic drive device of underwater gate valve, underwater gate valve and control method of underwater gate valve |
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| CN104595561A (en) * | 2015-01-29 | 2015-05-06 | 纽威石油设备（苏州）有限公司 | Spring type hydraulic driver for flat gate valve |
| CN104595559A (en) * | 2015-01-29 | 2015-05-06 | 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 |
| CN104751009A (en) * | 2015-04-17 | 2015-07-01 | 中石化石油工程机械有限公司研究院 | Modeling and analyzing method for frictional force load of underwater flat gate valve |
| CN105240593A (en) * | 2015-11-19 | 2016-01-13 | 中国海洋大学 | Electromagnetic reversing valve |
| CN105240593B (en) * | 2015-11-19 | 2018-01-09 | 中国海洋大学 | A kind of solenoid directional control valve |
| CN106481830A (en) * | 2016-11-16 | 2017-03-08 | 江苏科技大学 | A kind of high reliability hydraulic pressure underwater gate 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 |
| CN109139947B (en) * | 2018-09-19 | 2023-11-17 | 江苏金石机械集团有限公司 | Non-penetrating hydraulic valve piston device |
| CN109139947A (en) * | 2018-09-19 | 2019-01-04 | 江苏金石机械集团有限公司 | A kind of non-through formula is surged valve piston apparatus |
| CN109237062A (en) * | 2018-11-27 | 2019-01-18 | 美钻深海能源科技研发（上海）有限公司 | A kind of hydraulic valve easily debugged |
| CN109237062B (en) * | 2018-11-27 | 2024-04-26 | 美钻深海能源科技研发（上海）有限公司 | Hydraulic gate valve easy to debug |
| CN110553084A (en) * | 2019-09-12 | 2019-12-10 | 纽威石油设备（苏州）有限公司 | Hydraulic driver for underwater valve |
| CN110553084B (en) * | 2019-09-12 | 2024-03-29 | 纽威石油设备（苏州）有限公司 | Hydraulic driver for underwater valve |
| CN110617334A (en) * | 2019-09-26 | 2019-12-27 | 浙江绿洲制冷设备有限公司 | Flow regulating valve |
| CN112161075A (en) * | 2020-10-30 | 2021-01-01 | 中国船舶重工集团公司七五O试验场 | Underwater automatic control high-pressure valve |
| CN113774987B (en) * | 2021-09-30 | 2022-08-30 | 艺坤智慧水务集团有限公司 | Modularized multi-cavity compensation non-negative-pressure water supply device |
| CN113774987A (en) * | 2021-09-30 | 2021-12-10 | 浙江艺坤水泵科技有限公司 | Modularized multi-cavity compensation non-negative-pressure water supply device |
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| CN102900859B (en) | 2014-02-12 |
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