CN104089077A - Hydraulic drive device of underwater gate valve, underwater gate valve and control method of underwater gate valve - Google Patents
Hydraulic drive device of underwater gate valve, underwater gate valve and control method of underwater gate valve Download PDFInfo
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- CN104089077A CN104089077A CN201410320440.5A CN201410320440A CN104089077A CN 104089077 A CN104089077 A CN 104089077A CN 201410320440 A CN201410320440 A CN 201410320440A CN 104089077 A CN104089077 A CN 104089077A
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- Prior art keywords
- valve
- leather bag
- under water
- gate valve
- flashboard
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/316—Guiding of the slide
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
- Sliding Valves (AREA)
Abstract
The invention discloses a hydraulic drive device of an underwater gate valve. The hydraulic drive device comprises an upper valve cover assembly, an elastic part, a leather bag, a valve rod and a piston, the upper valve cover assembly is fixedly connected with the top end of a valve body to form a cavity, the piston is movably connected with the inner wall of the upper valve cover assembly to divide the cavity into a first cavity and a second cavity, the elastic part and the leather bag are contained in the first cavity, the upper valve cover assembly is provided with a hydraulic in-out port communicated with the second cavity, a liquid injection hole communicated with the first cavity and an inflation hole communicated with an inner cavity of the leather bag, one end of the valve rod is fixedly connected with the piston, and the other end of the valve rod is fixedly connected with the top end of a flashboard to drive the flashboard to move relative to a valve base assembly. The invention further discloses the underwater gate valve and the control method of the underwater gate valve. According to the hydraulic drive device, due to the protection function of the upper valve cover assembly, the leather bag can be made of common materials to meet pressure compensation requirements.
Description
Technical field
The present invention relates to petroleum vapour drilling and extracting equipment and control technique field, relate in particular to a kind of hydraulic unit driver of gate valve under water, under water gate valve and controlling method thereof.
Background technique
In the process of marine petroleum exploitation, relate to a large amount of subsea production trees and subsea manifold system, and gate valve is one of most important parts in subsea production tree and subsea manifold system, its performance quality directly has influence on the performance of whole production tree system and subsea manifold system.Because equipment all carries out under even several kms of seabed hundreds of rice, underwater installation all needs by remote operation or ROV (Remote Operated Vehicle, underwater robot) realize control, therefore, on gate valve, actuator is installed under water and realizes switching function.
But at present, the pressure compensation of gate valve is all, by external pressure canceller, spring is carried out to pressure compensation under water both at home and abroad, and underwater environment complexity is had relatively high expectations to the structural strength of outside pressure compensation equipment.Therefore, external pressure canceller needs the material that working strength is very high to make, and cost is higher.
Summary of the invention
Main purpose of the present invention is to provide a kind of hydraulic unit driver of gate valve under water, under water gate valve and controlling method thereof, is intended to realize under water that gate valve is pressure compensated reduces its pressure compensated structural strength requirement simultaneously.
For achieving the above object, the invention provides a kind of hydraulic unit driver of gate valve under water, the brake valve body of described gate valve under water comprises valve body, valve component and flashboard, it is characterized in that, hydraulic unit driver comprises bonnet assembly, elastic component, leather bag, valve rod and piston, described bonnet assembly and described valve body top are fixedly connected to form a chamber, described piston is flexibly connected described chamber is divided into the first chamber and the second chamber with the inwall of described bonnet assembly, described elastic component and leather bag are contained in described the first chamber, one end of described elastic component and described bonnet assembly butt, the other end of described elastic component and described piston butt, the inner chamber of described leather bag is communicated with described the first chamber, on described bonnet assembly, offering the hydraulic pressure being communicated with described the second chamber imports and exports, the topping up hole being communicated with described the first chamber, and the air-filled pore being communicated with the inner chamber of described leather bag, one end of described valve rod is fixedly connected with described piston, the other end is fixedly connected with to drive described flashboard with respect to described valve component activity with the top of described flashboard.
Preferably, described bonnet assembly comprises the leather bag housing that is fixedly connected with and is sheathed on the bonnet on described valve rod, the elastic component housing being fixedly connected with described bonnet and be covered on described bonnet top with described valve body top, wherein, described bonnet, elastic component housing and leather bag housing enclose the chamber that forms described bonnet assembly, described piston moves on the madial wall of described elastic component housing, described leather bag housing is threaded with described leather bag, and described air-filled pore and topping up hole are all positioned on described leather bag housing.
The present invention further proposes one gate valve under water, the brake valve body that comprises hydraulic unit driver as above and be connected with described hydraulic unit driver, wherein, described brake valve body comprises the valve body, valve component and the flashboard that are fixedly connected with the bonnet assembly of described hydraulic unit driver, on described valve body, offer runner, described valve component is installed in described runner the inwall butt with described valve body, and described flashboard is installed on described valve component and is movable with runner described in switch with respect to described valve component.
Preferably, described valve component comprises the first valve seat, and is sheathed on the second valve seat on described the first valve seat, and wherein, described flashboard is flexibly connected with described the first valve seat, between described the first valve seat and the second valve seat, is formed with the gap being communicated with described runner.
Preferably, described the first valve seat and the second valve seat are axially symmetric structure, between the left side of described the first valve seat and right side and described the second valve seat, are equipped with described gap; Between described the second valve seat and described valve body and between described the first valve seat and the second valve seat, be provided with seal ring.
Preferably, gate valve also comprises the underwater robot operational guidance mechanism being connected with described valve body under water, this underwater robot operational guidance mechanism comprises the guide rod that is fixedly connected with described flashboard bottom, is sheathed on the bottom flange being fixedly connected with on described guide rod and with described valve body bottom and the underwater robot operation-interface being fixedly connected with described bottom flange bottom, wherein, described guide rod can be with respect to described bottom flange vertical direction motion, to drive described flashboard with respect to described valve component activity.
Preferably, the concordant setting of axis of the axis of described guide rod and the valve rod of described hydraulic unit driver.
Preferably, contacting of described bottom flange and described valve body is provided with gasket ring between end face, and contacting of the bonnet assembly of described hydraulic unit driver and described valve body is provided with gasket ring between end face; Between described underwater robot operation-interface and described guide rod, and be equipped with sealing gland between the valve rod of described hydraulic unit driver and the bonnet of described hydraulic unit driver.
Preferably, the bonnet of described hydraulic unit driver is provided with the first butter hole being communicated with its axle center hole, described bottom flange is provided with the second butter hole being communicated with its axle center hole, and described valve rod is arranged in the axle center hole of described bonnet, and described guide rod is arranged in the axle center hole of described bottom flange.
The present invention further also proposes a kind of controlling method of the gate valve under water based on above-mentioned, comprising:
In the time closing under water gate valve, import and export filling liquid by hydraulic pressure, to move on promotion piston, piston moving belt ovable valve stem and flashboard move up, elastic component compression, the cavity volume of leather bag reduces interior pressure and increases, and the liquid in the first chamber enters the inner chamber of leather bag housing, until the inwall butt of one end of piston and elastic component housing, gate valve enters closed condition under water; In the time that needs are fetched boiling water lower flashboard valve, import and export draining by hydraulic pressure, the high pressure in dependence leather bag and the reposition force of elastic component promote piston and move down, simultaneously, valve rod and flashboard also move down thereupon, until the communication port of flashboard and the runner of valve body are communicated with, gate valve enters open mode under water.
The hydraulic unit driver of the gate valve under water that the present invention proposes; by leather bag being built in the chamber of bonnet assembly and the formation of valve body top; because of the protective action of bonnet assembly; make leather bag can use general material can meet pressure compensation requirement; therefore, leather bag is different from prior art because avoiding sandstone, shell etc. in seawater must use high-strength material to the destruction of leather bag.Therefore, originally gate valve can be realized pressure compensation requirement by leather bag on the one hand under water, makes elastic component size not need to do very greatly, also can reduce its material requirements simultaneously.Meanwhile, this hydraulic unit driver uses leather bag to substitute existing external pressure canceller, makes simple and convenient.In addition, leather bag is built in the chamber of bonnet assembly and the formation of valve body top, makes hydraulic unit driver more compact structure.
Brief description of the drawings
Fig. 1 is the present invention's structural representation of gate valve preferred embodiment in the time of full-gear under water;
Fig. 2 is the present invention's structural representation of gate valve preferred embodiment in the time of full-shut position under water.
Realization, functional characteristics and the advantage of the object of the invention, in connection with embodiment, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
It should be noted that, in description of the invention, term " laterally ", " longitudinally ", " on ", orientation or the position relationship of the instruction such as D score, 'fornt', 'back', " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward " be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, the device or the element that are not instruction or hint indication must have specific orientation, construct and operation with specific orientation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second " etc. are only for describing object, and can not be interpreted as instruction or hint relative importance.
The invention provides one gate valve under water.
See figures.1.and.2, Fig. 1 is the present invention's structural representation of gate valve preferred embodiment in the time of full-gear under water; Fig. 2 is the present invention's structural representation of gate valve preferred embodiment in the time of full-shut position under water.
In this preferred embodiment, the hydraulic unit driver that gate valve comprises brake valve body and is connected with brake valve body under water, wherein, brake valve body comprises valve body 10, valve component 11 and flashboard 12, on valve body 10, offer runner, valve component 11 is installed in runner the inwall butt with valve body 10, and flashboard 12 is installed on valve component 11 and is movable with switch runner with respect to valve component 11, hydraulic unit driver comprises bonnet assembly 21, elastic component 22, leather bag 23, valve rod 24 and piston 25, bonnet assembly 21 is fixedly connected to form a chamber with valve body 10 tops, piston 25 is flexibly connected chamber is divided into the first chamber and the second chamber with the inwall of bonnet assembly 21, elastic component 22 and leather bag 23 are contained in the first chamber, one end of elastic component 22 and bonnet assembly 21 butts, the other end of elastic component 22 and piston 25 butts, the inner chamber of leather bag 23 is communicated with the first chamber, on bonnet assembly 21, offer the hydraulic pressure being communicated with the second chamber and import and export 2111, the topping up hole 2112 being communicated with the first chamber, and the air-filled pore 2113 being communicated with the inner chamber of leather bag 23, one end of valve rod 24 is fixedly connected with piston 25, the other end is fixedly connected with to drive flashboard 12 with respect to valve component 11 activities with the top of flashboard 12.
In the present embodiment, on flashboard 12, offer T-slot, so that valve rod 24 is installed on to its top.On flashboard 12, offer communication port, communication port moves up and down with originally gate valve under water of switch with respect to runner.In the time that communication port is communicated with runner, gate valve is in open mode under water, and in the time that communication port is not communicated with runner, gate valve is in closed condition under water.By the flashboard shown in Fig. 1 12 be inverted install time (Rotate 180 degree), can by this under water gate valve become Normally closed type valve from valve open in usual.The internal diameter of the communication port of flashboard 12 is slightly larger than the internal diameter of runner.Valve body 10 can be fixedly connected with by screw with bonnet assembly 21.Elastic component 22 is set to spring in the present embodiment.
Particularly, in the present embodiment, bonnet assembly 21 comprises with valve body 10 tops and is fixedly connected with and is sheathed on the valve gap 211 on valve rod 24, the elastic component housing 212 being fixedly connected with described bonnet 211, and be covered on the leather bag housing 213 on bonnet 211 tops, wherein, described bonnet 211, elastic component housing 212 and leather bag housing 213 enclose the chamber that forms described bonnet assembly 21, piston 25 moves on the madial wall of elastic component housing 212, leather bag housing 213 is threaded with leather bag 23, air-filled pore 2113 and topping up hole 2112 are all positioned on leather bag housing 213.Particularly, in the present embodiment, bonnet 211 is fixedly connected with by screw with leather bag housing 213, and elastic component housing 212 is fixedly connected with by screw with leather bag housing 213.
In the present embodiment, the inner chamber of leather bag 23 can pass through air-filled pore 2113 gassies, injects a small amount of hydraulic oil, to realize the lubrication to piston 25 in the first chamber by topping up hole 2112.The first chamber can be communicated with by the bar hole on piston 25 with the inner chamber of leather bag 23, and gate valve is under full-gear under water, and the interior expansive force of the pretightening force of spring and leather bag 23, makes flashboard 12 in open mode.
In the present embodiment, with reference to Fig. 2, as normal cut-off valve, import and export 2111 filling liquids (being hydraulic oil) by hydraulic pressure, move up to promote piston 25, piston 25 Sports band ovable valve stems 24 and flashboard 12 move up simultaneously, spring-compressed, the cavity volume of leather bag 23 reduces, interior pressure increases, and the liquid in the first chamber enters the inner chamber of leather bag housing 213, until the inwall butt of one end of piston 25 and elastic component housing 212, gate valve enters closed condition under water.With reference to Fig. 1, when needs are opened this under water when gate valve, hydraulic pressure is imported and exported 2111 drainings, high pressure in dependence leather bag 23 and the reposition force of spring promote piston 25 and move down, simultaneously, valve rod 24 and flashboard 12 also move down thereupon, until the communication port of flashboard 12 is communicated with the runner of valve body 10, gate valve enters open mode under water.
The gate valve under water that the present embodiment proposes; by leather bag 23 being built in the chamber of bonnet assembly 21 and valve body 10 tops formation; because of the protective action of bonnet assembly 21; make leather bag 23 can use general material can meet pressure compensation requirement; therefore; leather bag 23 is different from prior art because avoiding sandstone, shell etc. in seawater to the necessary high-strength material that uses of the destruction of leather bag 23, can reduce the fabricating cost of leather bag 23.Therefore, originally gate valve can be realized pressure compensation requirement by leather bag 23 on the one hand under water, makes elastic component 22 sizes not need to do very greatly, also can reduce its material requirements simultaneously.Meanwhile, this leather bag of gate valve use under water 23 substitutes existing external pressure canceller, makes very simple and convenient.In addition, leather bag 23 is built in the chamber of bonnet assembly 21 and valve body 10 tops formation, gate valve structure is compacter under water to make this.
Further, in the present embodiment, valve component 11 comprises the first valve seat 111, and be sheathed on the second valve seat 112 on the first valve seat 111, wherein, flashboard 12 is flexibly connected with the first valve seat 111, between the first valve seat 111 and the second valve seat 112, is formed with the gap being communicated with runner.
Gate valve at work under water, in runner, water enters into the gap of the first valve seat 111 and the second valve seat 112, the pressure-acting of water promotes the first valve seat 111 and the second valve seat 112 relative movement, the second valve seat 112 is subject to the power of flashboard 12 direction extruding, thereby makes the sealing between flashboard 12 and the second valve seat 112 tightr.
Further, the first valve seat 111 and the second valve seat 112 are axially symmetric structure, between the left side of the first valve seat 111 and right side and the second valve seat 112, are equipped with gap.Now, the pressure that the second valve seat 112 is subject to is more even, is conducive to make the sealing between flashboard 12 and the second valve seat 112 tightr.
Further, between the second valve seat 112 and valve body 10 and between the first valve seat 111 and the second valve seat 112, be provided with seal ring 40, can further improve this sealability of gate valve under water.
Further, originally gate valve also comprises the underwater robot operational guidance mechanism being connected with valve body 10 under water, this underwater robot operational guidance mechanism comprises the guide rod 51 that is fixedly connected with flashboard 12 bottoms, is sheathed on the bottom flange 52 being fixedly connected with on guide rod 51 and with valve body 10 bottoms and the underwater robot operation-interface 53 being fixedly connected with bottom flange 52 bottoms, wherein, guide rod 51 can be with respect to bottom flange 52 vertical direction motions, to drive flashboard 12 with respect to valve component 11 activities.Bottom flange 52 can be fixedly connected with by screw with valve body 10.
At work, as shown in Figure 1, be set to valve open in usual as example explanation taking gate valve under water, gate valve must provide hydraulic power in the time cutting out under water.There is sometimes the situation of normal hydraulic control inefficacy or feed flow fault.If gate valve place closed condition, can rely on self elastic force effect of spring and the expansive force of the leather bag 23 lower flashboard valve of fetching boiling water; If gate valve is in open mode, can realize closing of gate valve under water by ROV emergency operation, draw-in groove on underwater robot operation-interface 53 provides location for ROV dop, mechanical arm is to guide rod 51 end applied thrusts, to promote guide rod 51, and then the motion of promotion flashboard 12, valve rod 24, piston 25 and spring, close the operation of gate valve under water thereby complete.
The gate valve under water that the present embodiment proposes, by the underwater robot operational guidance mechanism being connected with valve body 10 is set, in the time of the situation of the normal hydraulic control inefficacy of gate valve under water or feed flow fault, can also realize closing of gate valve under water by ROV emergency operation, improve this functional reliability of gate valve under water.
In the present embodiment, the concordant setting of axis of the axis of guide rod 51 and valve rod 24, thus can improve this structural reliability of gate valve under water.
Further, contacting between end face of bottom flange 52 and valve body 10 is provided with gasket ring 80, and contacting between end face of bonnet assembly 21 and valve body 10 is provided with gasket ring 80, can further improve this sealability of gate valve under water.Contacting of piston 25 and bonnet 211 is provided with seal ring 40 between end face.Between bottom flange 52 and guide rod 51, seal by gasket ring, spacer ring and combined sealing ring.
Further, bonnet 211 is provided with the first butter hole 61 being communicated with its axle center hole, bottom flange 52 is provided with the second butter hole 62 being communicated with its axle center hole, and valve rod 24 is arranged in the axle center hole of bonnet 211, and guide rod 51 is arranged in the axle center hole of bottom flange 52.
Can inject butter to the axle center hole of the axle center hole of bonnet 211 and bottom flange 52 by the first butter hole 61 and the second butter hole 62, realize the lubricated of guide rod 51 and valve rod 24.
Further, between underwater robot operation-interface 53 and guide rod 51, and be equipped with sealing gland 70 between valve rod 24 and bonnet 211, now, can further improve this sealability of gate valve under water.
The present invention further provides a kind of hydraulic unit driver of gate valve under water.
See figures.1.and.2, Fig. 1 is the present invention's structural representation of gate valve preferred embodiment in the time of full-gear under water; Fig. 2 is the present invention's structural representation of gate valve preferred embodiment in the time of full-shut position under water.
In this preferred embodiment, the hydraulic unit driver of gate valve under water, gate valve comprises hydraulic unit driver and brake valve body under water, brake valve body comprises valve body 10, valve component 11 and flashboard 12, hydraulic unit driver comprises bonnet assembly 21, elastic component 22, leather bag 23, valve rod 24 and piston 25, bonnet assembly 21 is fixedly connected to form a chamber with valve body 10 tops, piston 25 is flexibly connected chamber is divided into the first chamber and the second chamber with the inwall of bonnet assembly 21, elastic component 22 and leather bag 23 are contained in the first chamber, one end of elastic component 22 and bonnet assembly 21 butts, the other end of elastic component 22 and piston 25 butts, the inner chamber of leather bag 23 is communicated with the first chamber, on bonnet assembly 21, offer the hydraulic pressure being communicated with the second chamber and import and export 2111, the topping up hole 2112 being communicated with the first chamber, and the air-filled pore 2113 being communicated with the inner chamber of leather bag 23, one end of valve rod 24 is fixedly connected with piston 25, the other end is fixedly connected with to drive flashboard 12 with respect to valve component 11 activities with the top of flashboard 12.
On flashboard 12, offer T-slot, so that valve rod 24 is installed on to its top.On flashboard 12, offer communication port, communication port moves up and down with originally gate valve under water of switch with respect to runner.In the time that communication port is communicated with runner, gate valve is in open mode under water, and in the time that communication port is not communicated with runner, gate valve is in closed condition under water.By the flashboard shown in Fig. 1 12 be inverted install time (Rotate 180 degree), can by this under water gate valve become Normally closed type valve from valve open in usual.The internal diameter of the communication port of flashboard 12 is slightly larger than the internal diameter of runner.Valve body 10 can be fixedly connected with by screw with bonnet assembly 21.Elastic component 22 is set to spring in the present embodiment.Certainly, in other variant embodiment, can be also other structure, the present invention is not construed as limiting this.
Particularly, in the present embodiment, bonnet assembly 21 comprises with valve body 10 tops and is fixedly connected with and is sheathed on the valve gap 211 on valve rod 24, the elastic component housing 212 being fixedly connected with described bonnet 211, and be covered on the leather bag housing 213 on bonnet 211 tops, wherein, described bonnet 211, elastic component housing 212 and leather bag housing 213 enclose the chamber that forms described bonnet assembly 21, piston 25 moves on the madial wall of elastic component housing 212, leather bag housing 213 is threaded with leather bag 23, air-filled pore 2113 and topping up hole 2112 are all positioned on leather bag housing 213.Particularly, in the present embodiment, bonnet 211 is fixedly connected with by screw with leather bag housing 213, and elastic component housing 212 is fixedly connected with by screw with leather bag housing 213.
In the present embodiment, the inner chamber of leather bag 23 can pass through air-filled pore 2113 gassies, injects a small amount of hydraulic oil, to realize the lubrication to piston 25 in the first chamber by topping up hole 2112.The first chamber can be communicated with by the bar hole on piston 25 with the inner chamber of leather bag 23, and gate valve is under full-gear under water, and the interior expansive force of the pretightening force of spring and leather bag 23, makes flashboard 12 in open mode.
In the present embodiment, with reference to Fig. 2, as normal cut-off valve, import and export 2111 filling liquids by hydraulic pressure, move up to promote piston 25, piston 25 Sports band ovable valve stems 24 and flashboard 12 move up simultaneously, spring-compressed, the cavity volume of leather bag 23 reduces, interior pressure increases, and the liquid in the first chamber enters the inner chamber of leather bag housing 213, until the inwall butt of one end of piston 25 and elastic component housing 212, gate valve enters closed condition under water.With reference to Fig. 1, when needs are opened this under water when gate valve, hydraulic pressure is imported and exported 2111 drainings, high pressure in dependence leather bag 23 and the reposition force of spring promote piston 25 and move down, simultaneously, valve rod 24 and flashboard 12 also move down thereupon, until the communication port of flashboard 12 is communicated with the runner of valve body 10, gate valve enters open mode under water.
The hydraulic unit driver that the present embodiment proposes; by leather bag 23 being built in the chamber of bonnet assembly 21 and valve body 10 tops formation; because of the protective action of bonnet assembly 21; make leather bag 23 can use general material can meet pressure compensation requirement; therefore; leather bag 23 is different from prior art because avoiding sandstone, shell etc. in seawater to the necessary high-strength material that uses of the destruction of leather bag 23, can reduce the fabricating cost of leather bag 23.Therefore, this hydraulic unit driver can be realized pressure compensation requirement by leather bag 23 on the one hand, makes elastic component 22 sizes not need to do very greatly, also can reduce its material requirements simultaneously.Meanwhile, this hydraulic unit driver uses leather bag 23 to substitute existing external pressure canceller, makes simple and convenient.In addition, leather bag 23 is built in the chamber of bonnet assembly 21 and valve body 10 tops formation, makes the structure of this hydraulic unit driver compacter.
The present invention further also proposes a kind of controlling method based on above-mentioned gate valve under water.
In this preferred embodiment, the controlling method of gate valve comprises under water: in the time closing under water gate valve, import and export filling liquid by hydraulic pressure, to move on promotion piston, piston moving belt ovable valve stem and flashboard move up, elastic component compression, the cavity volume of leather bag reduces interior pressure and increases, liquid in the first chamber enters the inner chamber of leather bag housing, until the inwall butt of one end of piston and elastic component housing, gate valve enters closed condition under water; In the time that needs are fetched boiling water lower flashboard valve, import and export draining by hydraulic pressure, the high pressure in dependence leather bag and the reposition force of elastic component promote piston and move down, simultaneously, valve rod and flashboard also move down thereupon, until the communication port of flashboard and the runner of valve body are communicated with, gate valve enters open mode under water.
The controlling method of the gate valve under water that the present embodiment proposes; because of the protective action of bonnet assembly; make leather bag can use general material can meet pressure compensation requirement; therefore; leather bag is different from prior art because avoiding sandstone, shell etc. in seawater to the necessary high-strength material that uses of the destruction of leather bag, can reduce the fabricating cost of leather bag.Therefore, originally gate valve can be realized pressure compensation requirement by leather bag on the one hand under water, makes elastic component size not need to do very greatly, also can reduce its material requirements simultaneously.Meanwhile, use leather bag to substitute existing external pressure canceller, make simple and convenient.In addition, leather bag is built in the chamber of bonnet assembly and the formation of valve body top, gate valve structure is compacter under water to make this.
These are only the preferred embodiments of the present invention; not thereby limit the scope of the claims of the present invention; every equivalent structure transformation that utilizes specification of the present invention and accompanying drawing content to do, or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. the hydraulic unit driver of gate valve under water, the brake valve body of described gate valve under water comprises valve body, valve component and flashboard, it is characterized in that, hydraulic unit driver comprises bonnet assembly, elastic component, leather bag, valve rod and piston, described bonnet assembly and described valve body top are fixedly connected to form a chamber, described piston is flexibly connected described chamber is divided into the first chamber and the second chamber with the inwall of described bonnet assembly, described elastic component and leather bag are contained in described the first chamber, one end of described elastic component and described bonnet assembly butt, the other end of described elastic component and described piston butt, the inner chamber of described leather bag is communicated with described the first chamber, on described bonnet assembly, offering the hydraulic pressure being communicated with described the second chamber imports and exports, the topping up hole being communicated with described the first chamber, and the air-filled pore being communicated with the inner chamber of described leather bag, one end of described valve rod is fixedly connected with described piston, the other end is fixedly connected with to drive described flashboard with respect to described valve component activity with the top of described flashboard.
2. hydraulic unit driver as claimed in claim 1, it is characterized in that, described bonnet assembly comprises with described valve body top and is fixedly connected with and is sheathed on the bonnet on described valve rod, the elastic component housing being fixedly connected with described bonnet and be covered on the leather bag housing on described bonnet top, wherein, described bonnet, elastic component housing and leather bag housing enclose the chamber that forms described bonnet assembly, described piston moves on the madial wall of described elastic component housing, described leather bag housing is threaded with described leather bag, described air-filled pore and topping up hole are all positioned on described leather bag housing.
3. a gate valve under water, it is characterized in that, the brake valve body that comprises hydraulic unit driver as claimed in claim 1 or 2 and be connected with described hydraulic unit driver, wherein, described brake valve body comprises the valve body, valve component and the flashboard that are fixedly connected with the bonnet assembly of described hydraulic unit driver, on described valve body, offer runner, described valve component is installed in described runner the inwall butt with described valve body, and described flashboard is installed on described valve component and is movable with runner described in switch with respect to described valve component.
4. gate valve under water as claimed in claim 3, it is characterized in that, described valve component comprises the first valve seat, and be sheathed on the second valve seat on described the first valve seat, wherein, described flashboard is flexibly connected with described the first valve seat, between described the first valve seat and the second valve seat, is formed with the gap being communicated with described runner.
5. gate valve under water as claimed in claim 4, is characterized in that, described the first valve seat and the second valve seat are axially symmetric structure, between the left side of described the first valve seat and right side and described the second valve seat, is equipped with described gap; Between described the second valve seat and described valve body and between described the first valve seat and the second valve seat, be provided with seal ring.
6. gate valve under water as claimed in claim 5, it is characterized in that, also comprise the underwater robot operational guidance mechanism being connected with described valve body, this underwater robot operational guidance mechanism comprises the guide rod that is fixedly connected with described flashboard bottom, is sheathed on the bottom flange being fixedly connected with on described guide rod and with described valve body bottom and the underwater robot operation-interface being fixedly connected with described bottom flange bottom, wherein, described guide rod can be with respect to described bottom flange vertical direction motion, to drive described flashboard with respect to described valve component activity.
7. gate valve under water as claimed in claim 6, is characterized in that, the concordant setting of axis of the axis of described guide rod and the valve rod of described hydraulic unit driver.
8. gate valve under water as claimed in claim 6, is characterized in that, contacting of described bottom flange and described valve body is provided with gasket ring between end face, and contacting of the bonnet assembly of described hydraulic unit driver and described valve body is provided with gasket ring between end face; Between described underwater robot operation-interface and described guide rod, and be equipped with sealing gland between the valve rod of described hydraulic unit driver and the bonnet of described hydraulic unit driver.
9. gate valve under water as claimed in claim 8, it is characterized in that, the bonnet of described hydraulic unit driver is provided with the first butter hole being communicated with its axle center hole, described bottom flange is provided with the second butter hole being communicated with its axle center hole, described valve rod is arranged in the axle center hole of described bonnet, and described guide rod is arranged in the axle center hole of described bottom flange.
10. a controlling method for the gate valve under water based on described in any one in claim 3 to 9, is characterized in that, comprising:
In the time closing under water gate valve, import and export filling liquid by hydraulic pressure, to move on promotion piston, piston moving belt ovable valve stem and flashboard move up, elastic component compression, the cavity volume of leather bag reduces interior pressure and increases, and the liquid in the first chamber enters the inner chamber of leather bag housing, until the inwall butt of one end of piston and elastic component housing, gate valve enters closed condition under water; In the time that needs are fetched boiling water lower flashboard valve, import and export draining by hydraulic pressure, the high pressure in dependence leather bag and the reposition force of elastic component promote piston and move down, simultaneously, valve rod and flashboard also move down thereupon, until the communication port of flashboard and the runner of valve body are communicated with, gate valve enters open mode under water.
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| CN201410320440.5A CN104089077B (en) | 2014-07-04 | 2014-07-04 | Hydraulic unit driver, under water gate valve and the controlling method thereof of gate valve under water |
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| CN201410320440.5A CN104089077B (en) | 2014-07-04 | 2014-07-04 | Hydraulic unit driver, under water gate valve and the controlling method thereof of gate valve under water |
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| CN106051192A (en) * | 2016-07-18 | 2016-10-26 | 泸州大通石油机械厂 | Sand settling preventing flat gate valve |
| RU2612665C1 (en) * | 2015-10-15 | 2017-03-13 | Общество с ограниченной ответственностью Финансово-промышленная компания "Космос-Нефть-Газ" | Hydraulic safety valve |
| CN106763842A (en) * | 2017-03-10 | 2017-05-31 | 南阳市亚华石油机械有限公司 | Surge mud gate valve |
| CN107893790A (en) * | 2017-12-29 | 2018-04-10 | 山东康洁非织造布有限公司 | Nonwovens Line hydraulic station pressure valve |
| CN110345263A (en) * | 2019-07-26 | 2019-10-18 | 杨佳洲 | A kind of Pneumatic two-position cut-off valve |
| 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 |
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| 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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Effective date of registration: 20171130 Address after: 430223 Hubei, East Lake New Technology Development Zone, Optics Valley Road, No. 77,, financial port, A2 Co-patentee after: SINOPEC OILFIELD EQUIPMENT CORPORATION Patentee after: Sinopec Research Institute of petroleum machinery and Limited by Share Ltd Address before: 430223 Hubei, East Lake New Technology Development Zone, Optics Valley Road, No. 77,, financial port, A2 Patentee before: Research Institute of SINOPEC Petroleum Engineering Machinery Co., Ltd. |