CN106641411B - Quick-closing valve - Google Patents
Quick-closing valve Download PDFInfo
- Publication number
- CN106641411B CN106641411B CN201610976467.9A CN201610976467A CN106641411B CN 106641411 B CN106641411 B CN 106641411B CN 201610976467 A CN201610976467 A CN 201610976467A CN 106641411 B CN106641411 B CN 106641411B
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- Prior art keywords
- quick
- closing valve
- connecting rod
- oil
- drive cylinder
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Classifications
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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
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/38—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side
- F16K31/383—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side the fluid acting on a piston
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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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
- F16K31/44—Mechanical actuating means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The invention discloses a kind of quick-closing valves, belong to steam valve technical field.The quick-closing valve includes quick-closing valve seat, quick-closing valve door, quick-closing valve core, drive cylinder, control mechanism and control oil cylinder, quick-closing valve seat tool has air port, quick-closing valve door is openable and closable to be arranged on air port, the both ends of quick-closing valve core are fixedly connected with the driving piston of quick-closing valve door and drive cylinder respectively, drive cylinder is provided with mounting hole far from one end of driving piston, the second oil discharge outlet is provided on the side wall of mounting hole, control mechanism includes slide bar, first connecting rod and second connecting rod, slide bar is movably arranged in mounting hole, the oil inlet passage that setting can be communicated with the second oil discharge outlet in slide bar, first connecting rod be overlapped on slide bar and with and one end of second connecting rod be rotatably connected, it is connected between second connecting rod and control oil cylinder by elastic component；The control piston rod of control oil cylinder is detachably provided in slide bar end.The present invention can prevent the problem of operational safety deficiency caused by causing quick-closing valve to automatically turn on because of automatically controlled maloperation.
Description
Technical field
The present invention relates to steam valve technical field, in particular to a kind of quick-closing valve.
Background technique
Steam turbines can convert mechanical energy with pressure energy for the thermal energy in steam, to drive on rotary machine
Such as the equipment such as driving oil pump, generating set, propeller.Steam turbines is widely used on ship, the steam turbines
It generally requires and is equipped with a set of quick-closing valve, turned off for the flow to steam, when inlet valve group needs quick closedown to be truncated
Steam turbines into vapour when, steam turbines can be made to stop working rapidly by closing quick-closing valve.
In the implementation of the present invention, the inventor finds that the existing technology has at least the following problems:
In the prior art, belong to power type for controlling the driving device of quick-closing valve shutdown, by remotely controlling, vulnerable to remote
The faulty operation of Cheng Duan causes bungle, and operational safety is insufficient.
Summary of the invention
In order to solve in the prior art because the driving device for controlling quick-closing valve shutdown belongs to quick-closing valve caused by power type
Operational safety deficiency problem, the embodiment of the invention provides a kind of quick-closing valves.The technical solution is as follows:
A kind of quick-closing valve of the embodiment of the present invention, the quick-closing valve include quick-closing valve seat, quick-closing valve door, quick-closing valve core and drive
Dynamic oil cylinder, the quick-closing valve seat tool have the air intake, air port and steam drain being sequentially communicated, and the quick-closing valve door is openable and closable to be set
Set on the air port, one end of the quick-closing valve core is fixedly connected on the quick-closing valve door, the quick-closing valve core it is another
The side wall of the quick-closing valve seat is stretched out in one end,
The drive cylinder is fixedly mounted on the side wall of the quick-closing valve seat, and driving is provided in the drive cylinder and is lived
Plug, the driving piston will be divided into driving epicoele and driving cavity of resorption inside the drive cylinder, the side wall of the driving cavity of resorption is set
Be equipped with the first oil inlet and the first oil discharge outlet, the other end of the quick-closing valve core protrude into it is intracavitary under the driving, and with it is described
Driving piston is fixedly connected, and the side wall of the driving epicoele is provided with the second oil inlet；
The drive cylinder is axially provided with mounting hole along the drive cylinder far from the end of the quick-closing valve seat, described
The second oil discharge outlet is offered on the hole wall of mounting hole；
The quick-closing valve further includes control mechanism and control oil cylinder；
The control mechanism includes slide bar, first connecting rod and second connecting rod, and the slide bar is movably arranged on the mounting hole
It is interior, oil drain passage is provided in the slide bar, one end of the oil drain passage is communicated with the inside of the driving epicoele, the row
The other end in oily channel is operationally communicated with second oil discharge outlet, and the first connecting rod is axially displaceably inserted into described
The axis direction of end of the drive cylinder far from the quick-closing valve seat, the moving direction of the first connecting rod and the slide bar is in folder
Angle, one end of the first connecting rod be overlapped on the slide bar away from it is described driving piston one end on, the first connecting rod it is another
One end and one end of the second connecting rod are hinged, are hinged on the control oil cylinder in the middle part of the second connecting rod, described second
Dynamic clamping head and quiet clamping head is provided between connecting rod and the control oil cylinder；
The control oil cylinder is mounted in the drive cylinder, is provided with control piston rod in the control oil cylinder, described
The telescopic end of control piston rod is detachably provided in the slide bar on one end of the driving piston.
Further, the slide bar includes inside the drive cylinder to set gradually outside the drive cylinder
One bar portion and the second bar portion, the diameter of second bar portion are greater than the diameter of first bar portion, and the mounting hole includes from institute
It states inside drive cylinder to the first mounting hole and the second mounting hole set gradually outside the drive cylinder, first installation
The internal diameter in hole is consistent with the outer diameter of first bar portion, the outer diameter phase of the internal diameter of second mounting hole and second bar portion
Unanimously.When slide bar moves in mounting hole, the second bar portion can limit the moving displacement of slide bar.
Further, the end of second bar portion is provided with positive stop lug boss, and the diameter of the positive stop lug boss is less than institute
The diameter of the second bar portion is stated, one end of the first connecting rod is detachably provided in the side of the positive stop lug boss.Positive stop lug boss
Effect be limit first connecting rod moving displacement.
Further, one end of the second connecting rod is provided with kidney slot, the length direction of the kidney slot and described the
The length direction of two connecting rods is identical, and one end of the second connecting rod is cut with scissors by the other end of the kidney slot and the first connecting rod
It connects.
Preferably, the first compression elastic piece is provided in the rodless cavity of the control oil cylinder.
Further, intracavitary in the driving of the drive cylinder to be provided with the second compression elastic piece, the second compression bullet
The both ends of property part are connect with the driving piston and the drive cylinder far from the end of the quick-closing valve seat respectively.Pass through control
The active force of the second compression elastic piece of pressure and setting of hydraulic oil in drive cylinder, can be such that driving piston rests on specified
Position, this just can make the aperture of quick-closing valve door adjustable.
Further, it is in match with the second compression elastic piece outer diameter that the drive cylinder, which at least has one section,
Column.The stylolitic part can be supported the second compression elastic piece, prevent the second compression elastic piece because of gravity, impact force etc.
Effect generates eccentric.
Further, the driving piston is towards being provided with convex block, the drive cylinder on the end face of the quick-closing valve seat
There is groove corresponding with the convex block close to the end of the quick-closing valve seat, first oil discharge outlet is provided with the driving oil
Cylinder is on one end of the quick-closing valve seat, and first oil discharge outlet is correspondingly arranged and communicates with the groove, the first row
The aperture of hydraulic fluid port is less than the aperture of the groove.It drives piston is mobile in drive cylinder to drive quick-closing valve core mobile, makes fast pass
When valve is closed, hydraulic oil can be discharged from the first oil discharge outlet, and convex block can be mobile to groove direction, and then reduces the first oil discharge outlet
Dredge oil amount, slow down to the movement of driving piston, and then can reduce the closing velocity of quick-closing valve door, reduce speed to reach
The impact that closing valve is generated with quick-closing valve seat when closed avoids generating noise, and increases the service life of valve group.
Further, the drive cylinder is provided with by the quick-closing valve core activity in one end of the quick-closing valve seat
The pilot sleeve passed through has lubrication gap between the pilot sleeve and the quick-closing valve core.Hydraulic oil in drive cylinder
It can penetrate into the lubrication gap, movement of the quick-closing valve core in pilot sleeve is lubricated, bite phenomenon is prevented.
Preferably, the pilot sleeve is pierced by the drive cylinder and is provided with close to the position of one end of the quick-closing valve seat
Drain tap.The drain tap is used to recycle the hydraulic oil in lubrication gap, while can also reduce hydraulic oil at a lubrication gap
Pressure.
Technical solution provided in an embodiment of the present invention has the benefit that
The quick-closing valve seat tool of quick-closing valve provided by the embodiment of the present invention has the air intake, air port and steam discharge being sequentially communicated
Mouthful, in this way, steam can enter from the air intake of quick-closing valve, it is discharged after air port, then from steam drain；Due to quick-closing valve door
It is openable and closable to be arranged on air port, by the on-off on the i.e. reachable control vapour road of the unlatching of control quick-closing valve door, since speed is closed
The both ends of spool are fixedly connected with the driving piston of quick-closing valve door and drive cylinder respectively, and therefore, the unlatching of quick-closing valve door can be with
It is controlled by the driving piston driving quick-closing valve core movement of drive cylinder.
Since the side wall of the driving cavity of resorption of drive cylinder is provided with the first oil inlet and the first oil discharge outlet, the side of epicoele is driven
Wall is provided with the second oil inlet, and the end of drive cylinder is provided with mounting hole, the second oil discharge outlet is offered on the hole wall of mounting hole,
Pressure oil is sent to driving cavity of resorption by the first oil inlet, drives the hydraulic oil of epicoele to be discharged through the second oil discharge outlet, drives piston
Quick-closing valve core, quick-closing valve door can be driven mobile to the direction far from air port, quick-closing valve is opened；Conversely, passing through the second oil inlet
Mouth send pressure oil to driving epicoele, and the hydraulic oil of cavity of resorption is driven to be discharged through the first oil discharge outlet, and driving piston can drive fast pass
Spool, quick-closing valve door are mobile towards the direction of air port, and quick-closing valve is closed.
Since the quick-closing valve of the embodiment of the present invention further includes control mechanism and control oil cylinder, the slide bar activity of control mechanism is set
It sets in mounting hole, oil drain passage is provided in slide bar, one end of oil drain passage is communicated with the inside of drivig cylinder, oil drain passage
The other end operationally communicated with the second oil discharge outlet, therefore, when the hydraulic oil of epicoele being driven to convey through the second oil discharge outlet, need by
Oil drain passage is communicated with the second oil discharge outlet, i.e., need to move the slide bar of control mechanism in mounting hole.
Since one end of the first connecting rod of the control mechanism of the embodiment of the present invention is overlapped on slide bar away from the one of driving piston
On end, therefore, in slide bar before mounting hole carries out movement, one end of first connecting rod need to be detached from from slide bar.
Since first connecting rod is axially displaceably inserted into end of the drive cylinder far from quick-closing valve seat, and first connecting rod
One end is overlapped on slide bar on one end of driving piston, and the other end of first connecting rod and one end of second connecting rod are hinged, and second
It is hinged in the middle part of connecting rod on control oil cylinder, is provided with dynamic clamping head and quiet clamping head between second connecting rod and control oil cylinder, when operation needs elder generation
The rotary force for overcoming dynamic clamping head and quiet clamping head active force is applied to second connecting rod manually, second connecting rod is made to rotate, drives the
One connecting rod is detached from from slide bar, and slide bar can move under the action of driving the hydraulic oil of epicoele, until the oil extraction in slide bar
Channel is communicated with the second oil discharge outlet, at this point, the telescopic end of the control piston rod of control oil cylinder is withstood on the end face of slide bar, anti-on-slip
Bar further moves.
When quick-closing valve is closed, the telescopic end work of the control piston rod of oil cylinder is controlled, slide bar is moved in mounting hole, makes
Oil drain passage and the second oil discharge outlet disconnect, and under the reset response of dynamic clamping head and quiet clamping head, second connecting rod rotates, and then force the
One connecting rod is mobile to slide bar end, locks slide bar, prevents slide bar free to slide in installation cavity, make slide bar oil drain passage and
Second oil discharge outlet communicates, so that quick-closing valve is automatically turned on or closed.
Therefore, the quick-closing valve in the embodiment of the present invention before activation, the second connecting rod being both needed in manual action control mechanism,
It is detached from first connecting rod from slide bar, so that the second oil discharge outlet can be communicated with driving epicoele, quick-closing valve controls machine after closing
Second connecting rod in structure can automatically reset, and keep first connecting rod mobile to slide bar end, lock slide bar, make the second oil extraction
Mouthful disconnected with driving epicoele, to prevent from causing because of automatically controlled maloperation quick-closing valve to automatically turn on caused by operational safety is insufficient asks
Topic.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the structural schematic diagram of quick-closing valve provided in an embodiment of the present invention；
Fig. 2 is the arrangement schematic diagram that oil cylinder is controlled in quick-closing valve provided in an embodiment of the present invention；
Fig. 3 is the arrangement schematic diagram of pilot sleeve in quick-closing valve provided in an embodiment of the present invention；
Fig. 4 is the arrangement schematic diagram of the mounting plate of bracket in quick-closing valve provided in an embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
The embodiment of the invention provides a kind of quick-closing valves.Fig. 1 is the structural representation of quick-closing valve provided in an embodiment of the present invention
Figure, referring to Fig. 1, which includes quick-closing valve seat 1, quick-closing valve door 2, quick-closing valve core 3, drive cylinder 5, control mechanism 6 and control
Liquefaction cylinder 7.
Wherein, quick-closing valve seat 1 has air intake 101, air port 102 and the steam drain 103 being sequentially communicated, quick-closing valve door 2
It is openable and closable be arranged on air port 102, one end of quick-closing valve core 3 is fixedly connected on quick-closing valve door 2, quick-closing valve core 3 it is another
The side wall of one end stretching quick-closing valve seat 1.
Drive cylinder 5 is fixedly mounted on the side wall of quick-closing valve seat 1, and being provided in drive cylinder 5 can be in drive cylinder 5
Movable driving piston 504, driving piston 504 will be divided into driving epicoele and driving cavity of resorption, drive cavity of resorption inside drive cylinder 5
Side wall is provided with the first oil inlet 511 and the first oil discharge outlet 505, and the other end of quick-closing valve core 3 extend into intracavitary under driving, speed pass
The other end of spool 3 is fixedly connected with driving piston 504, and the side wall of epicoele is driven to be provided with the second oil inlet 512.
End of the drive cylinder 5 far from quick-closing valve seat 1 is axially provided with mounting hole 507 along drive cylinder 5, the mounting hole
The second oil discharge outlet 506 is offered on 507 hole wall.
The quick-closing valve further includes control mechanism 6 and control oil cylinder 7.
Control mechanism 6 includes slide bar 601, first connecting rod 602 and second connecting rod 603, and slide bar 601 is movably arranged on mounting hole
In 507, oil drain passage 604 is provided in slide bar 601, one end of oil drain passage 604 is communicated with the inside of driving epicoele, and oil extraction is logical
The other end in road 604 is operationally communicated with the second oil discharge outlet 506, and first connecting rod 602 is axially displaceably inserted into driving oil
End of the cylinder 5 far from quick-closing valve seat 1, the moving direction of first connecting rod 602 and the axis direction of slide bar 601 are in angle, and first connects
One end of bar 602 is overlapped on 1 slide bar 601 on one end of driving piston 504, and the other end of first connecting rod 602 and second connects
One end of bar 603 is hinged, and the middle part of second connecting rod 603 is hinged on control oil cylinder 7, between second connecting rod 603 and control oil cylinder 7
It is provided with dynamic clamping head and quiet clamping head 605.
Control oil cylinder 7 is mounted in drive cylinder 5, is controlled and is provided with control piston rod 705 in oil cylinder 7, controls piston rod
705 telescopic end is detachably provided in slide bar 601 on one end of driving piston 504.When quick-closing valve is opened, control is lived
The telescopic end of stopper rod 705 is withstood on slide bar 601, and when quick-closing valve, which is in, closes, one end of first connecting rod 602 is located at slide bar 601
On.
The quick-closing valve seat tool of quick-closing valve provided by the embodiment of the present invention has the air intake, air port and steam discharge being sequentially communicated
Mouthful, in this way, steam can enter from the air intake of quick-closing valve, it is discharged after air port, then from steam drain；Due to quick-closing valve door
It is openable and closable to be arranged on air port, by the on-off on the i.e. reachable control vapour road of the unlatching of control quick-closing valve door, since speed is closed
The both ends of spool are fixedly connected with the driving piston of quick-closing valve door and drive cylinder respectively, and therefore, the unlatching of quick-closing valve door can be with
It is controlled by the driving piston driving quick-closing valve core movement of drive cylinder.
Since the side wall of the driving cavity of resorption of drive cylinder is provided with the first oil inlet and the first oil discharge outlet, the side of epicoele is driven
Wall is provided with the second oil inlet, and the end of drive cylinder is provided with mounting hole, the second oil discharge outlet is offered on the hole wall of mounting hole,
Pressure oil is sent to driving cavity of resorption by the first oil inlet, drives the hydraulic oil of epicoele to be discharged through the second oil discharge outlet, drives piston
Quick-closing valve core, quick-closing valve door can be driven mobile to the direction far from air port, quick-closing valve is opened；Conversely, passing through the second oil inlet
Mouth send pressure oil to driving epicoele, and the hydraulic oil of cavity of resorption is driven to be discharged through the first oil discharge outlet, and driving piston can drive fast pass
Spool, quick-closing valve door are mobile towards the direction of air port, and quick-closing valve is closed.
Since the quick-closing valve of the embodiment of the present invention further includes control mechanism and control oil cylinder, the slide bar activity of control mechanism is set
It sets in mounting hole, oil drain passage is provided in slide bar, one end of oil drain passage is communicated with the inside of drivig cylinder, oil drain passage
The other end operationally communicated with the second oil discharge outlet, therefore, when the hydraulic oil of epicoele being driven to convey through the second oil discharge outlet, need by
Oil drain passage is communicated with the second oil discharge outlet, i.e., need to move the slide bar of control mechanism in mounting hole.
Since one end of the first connecting rod of the control mechanism of the embodiment of the present invention is overlapped on slide bar away from the one of driving piston
On end, therefore, in slide bar before mounting hole carries out movement, one end of first connecting rod need to be detached from from slide bar.
Since first connecting rod is axially displaceably inserted into end of the drive cylinder far from quick-closing valve seat, and first connecting rod
One end is overlapped on slide bar on one end of driving piston, and the other end of first connecting rod and one end of second connecting rod are hinged, and second
It is hinged in the middle part of connecting rod on control oil cylinder, is provided with dynamic clamping head and quiet clamping head between second connecting rod and control oil cylinder, when operation needs elder generation
The rotary force for overcoming dynamic clamping head and quiet clamping head active force is applied to second connecting rod manually, second connecting rod is made to rotate, drives the
One connecting rod is detached from from slide bar, and slide bar can move under the action of driving the hydraulic oil of epicoele, until the oil extraction in slide bar
Channel is communicated with the second oil discharge outlet, at this point, the telescopic end of the control piston rod of control oil cylinder is withstood on the end face of slide bar, anti-on-slip
Bar further moves.
When quick-closing valve is closed, the telescopic end work of the control piston rod of oil cylinder is controlled, slide bar is moved in mounting hole, makes
Oil drain passage and the second oil discharge outlet disconnect, and under the reset response of dynamic clamping head and quiet clamping head, second connecting rod rotates, and then force the
One connecting rod is mobile to slide bar end, locks slide bar, prevents slide bar free to slide in installation cavity, make slide bar oil drain passage and
Second oil discharge outlet communicates, so that quick-closing valve is automatically turned on or closed.
Therefore, the quick-closing valve in the embodiment of the present invention before activation, the second connecting rod being both needed in manual action control mechanism,
It is detached from first connecting rod from slide bar, so that the second oil discharge outlet can be communicated with driving epicoele, quick-closing valve controls machine after closing
Second connecting rod in structure can automatically reset, and keep first connecting rod mobile to slide bar end, lock slide bar, make the second oil extraction
Mouthful disconnected with driving epicoele, to prevent from causing because of automatically controlled maloperation quick-closing valve to automatically turn on caused by operational safety is insufficient asks
Topic.
During the present invention is implemented, there is quick-closing valve seat 1 air intake 101 being sequentially communicated and steam drain 103 to be located at fast pass
The symmetrical two sides of valve seat, and air intake 101 and steam drain 103 obtain central axis and are parallel to each other, air port 102 is arranged in air intake
Between 101 and steam drain 103, and center of the central axis of air port 102 with the central axis of air intake 101 and steam drain 103
Axis is mutually perpendicular to.
Fig. 2 is the arrangement schematic diagram that oil cylinder is controlled in quick-closing valve provided in an embodiment of the present invention；In conjunction with Fig. 2, the present invention is real
Apply in example, slide bar 601 may include inside drive cylinder 5 to the first bar portion 601a set gradually outside drive cylinder 5 and
The diameter of second bar portion 601b, the second bar portion 601b be greater than the first bar portion 601a diameter, correspondingly, mounting hole 507 include from
To the first mounting hole and the second mounting hole set gradually outside drive cylinder 5, the internal diameter of the first mounting hole inside drive cylinder 5
Consistent with the outer diameter of the first bar portion 601a, the internal diameter of the second mounting hole is consistent with the outer diameter of the second bar portion 601b, sliding in this way
When bar 601 moves in mounting hole 507, the second bar portion 601b can limit the moving displacement of slide bar 601.
In addition, positive stop lug boss 601c, positive stop lug boss has can be set in the end of the second bar portion 601b in the embodiment of the present invention
601c can be in the form of a column, and diameter of the diameter less than the second bar portion 601b, one end of first connecting rod 602 can act against positive stop lug boss
On 601c, the effect of positive stop lug boss 601c is to limit the moving displacement of first connecting rod 601b.
In the embodiment of the present invention, the first bar portion 601a, the second bar portion 601b and positive stop lug boss 601c can be integral type knot
Structure, and be coaxially disposed, to facilitate the manufacturing of slide bar 601.
In the embodiment of the present invention, kidney slot 606, the length side of kidney slot 606 has been can be set in one end of second connecting rod 603
To identical as the length direction of second connecting rod 603, one end of second connecting rod 603 is another by kidney slot 606 and first connecting rod 601
Realize hinged in one end.
In the embodiment of the present invention, the moving direction of first connecting rod 602 perpendicular can be closed with the axis direction of slide bar 601
System.
The middle part of second connecting rod 603 in the embodiment of the present invention can be rotatably connected with control oil cylinder 7, between the two
Dynamic clamping head and quiet clamping head 605 can select helical spring, and under original state, dynamic clamping head and quiet clamping head 605 can act on second connecting rod always
Active force counterclockwise on 603 forces first connecting rod 602 mobile towards the direction of slide bar in driving upper cover 502, to slide bar
601 movement is limited；Before slide bar 601 moves upwards, first manual action second connecting rod 603 is needed, applies a up time to it
The rotary force of needle, the helical spring power for overcoming dynamic clamping head and quiet clamping head 605 to generate drive the court in driving upper cover 502 of first connecting rod 602
It is mobile to the direction far from slide bar 601, and then slide bar 601 moves upwards under the hydraulic action in drive cylinder 5, while the
One end of one connecting rod 602 is contacted with the second bar portion 601b, opposite, during 601 slide downward of slide bar, first connecting rod 602
One end can be in contact with positive stop lug boss 601c, and then carry out buckle fixation to slide bar 601, prevent slide bar 601 from moving upwards.
In the embodiment of the present invention, it can be connected by third connecting rod 607 between the middle part and control oil cylinder 7 of second connecting rod 603
It connects, one end of third connecting rod 607 and the middle part of second connecting rod 603 are hinged, and the other end and control oil cylinder 7 of third connecting rod 607 are solid
Fixed connection.
The control oil cylinder 7 of the embodiment of the present invention includes control cylinder body 701, control upper cover 702, control lower cover 703 and control
Piston 704, the both ends for controlling cylinder body 701 are sealed by control upper cover 702 and control lower cover 703 respectively, and control 704 activity of piston is set
It sets in control cylinder body 7, control piston rod 705 is fixedly connected with control piston 704, and the side wall of control cylinder body 701 is provided with logical
Hydraulic fluid port 706 controls and is provided with the first compression elastic piece 707 between piston 704 and control upper cover 702, this can just make control live
Hydraulic-driven power is born in the lower end surface of plug 704, and the spring force of the first compression elastic piece 707 is born in the upper surface of control piston 704,
By logical hydraulic fluid port 706 release hydraulic oil when, the hydraulic-driven power of control 704 lower end surface of piston disappears, and controls piston 704 first
The spring force of compression elastic piece 707 moves down under pushing, and then slide bar 601 is pushed to move downward, and is introduced by logical hydraulic fluid port 706
When hydraulic oil, hydraulic-driven power is established in the lower end surface of control piston 704, which overcomes the first compression elastic piece 707
Spring force push control piston 704 up to move, and then move up the condition of offer for slide bar 601.
First compression elastic piece 707 of the embodiment of the present invention can be compressed spring, wherein the outer diameter of control cylinder body 701
Match, in this way, control cylinder body 701 can be supported the first compression elastic piece 707, prevents the first compression elastic piece 707
Because gravity generates bias.
In the embodiment of the present invention, the driving upper cover 502 of the control lower cover 703 and drive cylinder 5 that control oil cylinder 7 be can integrate
Together, to facilitate installation of the control oil cylinder 7 in drive cylinder 5.
In the embodiment of the present invention, the second compression elastic piece 508, the second compression elastic piece 508 are provided in drivig cylinder 501
Both ends respectively with driving upper cover 502 and drive piston 504 connect.Pass through the pressure of the hydraulic oil in control drive cylinder 501
With the active force of the second compression elastic piece 508 of setting, can make that piston 504 is driven to rest on designated position, this can just make speed
The aperture of closing valve is adjustable.
The second compression elastic piece 508 in the embodiment of the present invention can be compressed spring, and drivig cylinder 501 can be in platform
Scalariform, and at least with one section in the column to match with 508 outer diameter of the second compression elastic piece, which can be to second
Compression elastic piece 508 is supported, and prevents the effects of the second compression elastic piece 508 is because of gravity, impact force from generating eccentric.
The drive cylinder 5 of the embodiment of the present invention further includes drivig cylinder 501, driving upper cover 502 and driving lower cover 503, is driven
The both ends of dynamic cylinder body 501 are sealed by driving upper cover 502 and driving lower cover 503 respectively, and drivig cylinder 501 and driving upper cover 502 are
Integral structure, driving lower cover 503 are removably connect with drivig cylinder 501.
The driving piston 504 of the embodiment of the present invention towards driving lower cover 503 end face on be provided with convex block 509, under driving
Lid 503 is provided with groove 5010 corresponding with convex block 509, and the first oil discharge outlet 505 is provided on driving lower cover 503, first row
Hydraulic fluid port 505 is correspondingly arranged and communicates with groove 5010, and the aperture of the first oil discharge outlet 505 is less than the aperture of groove 5010.Driving is lived
Plug 504 is mobile in drive cylinder 5 to drive quick-closing valve core 3 mobile, and when closing quick-closing valve door 2, hydraulic oil can be from the first oil extraction
It is discharged in mouth 505, convex block 509 also can be mobile to 5010 direction of groove, and hydraulic oil can only be between convex block 509 and groove 5010
Gap flows to the first oil discharge outlet 505, and then reduces the dredge oil amount of the first oil discharge outlet 505, subtracts to the movement of driving piston 504
Speed, and then can reduce the closing velocity of quick-closing valve door 2, it is generated when closed with quick-closing valve seat 1 with reaching reduction quick-closing valve door 2
Impact, to avoid generate noise, and increase valve group service life.
First oil inlet 5011 of the embodiment of the present invention can be provided on driving lower cover 503.
Convex block in the embodiment of the present invention can be annular in shape.
An oil expulsion channel 5012, the both ends difference of the oil expulsion channel 5012 can be opened up in the embodiment of the present invention, on convex block 509
It is communicated with 701 inside of control cylinder body and the first oil discharge outlet 505, after convex block 509 and groove 5010 are fully mated, for discharging control
Remaining hydraulic oil in cylinder body 701 processed.
The drive cylinder 5 of the embodiment of the present invention can be mounted on the outer wall of quick-closing valve seat 1 by bracket 4.
Fig. 3 is the arrangement schematic diagram of pilot sleeve in quick-closing valve provided in an embodiment of the present invention；In conjunction with Fig. 3, the present invention is real
It applies in example, driving lower cover 503 can integrate on bracket 4, drives to be provided in lower cover 503 and is passed through by 4 activity of quick-closing valve core
Pilot sleeve 8 has lubrication gap between pilot sleeve 8 and quick-closing valve core 4.Hydraulic oil in drive cylinder 5 can penetrate into
In the lubrication gap, movement of the quick-closing valve core 4 in pilot sleeve 8 is lubricated, bite phenomenon is prevented.
In the embodiment of the present invention, the overlap joint being overlapped on driving 503 top surface of lower cover is can be set in one end of pilot sleeve 8
Otic placode 801, the overlap joint otic placode 801 can be mounted on driving lower cover 503 by bolt.
In addition, the position that pilot sleeve 8 is pierced by driving lower cover 503 is provided with drain tap 802, which is used for back
The hydraulic oil in lubrication gap is received, while the pressure of hydraulic oil at a lubrication gap can also be reduced.
In the embodiment of the present invention, drain tap 802 can be connected to by a pipeline with fuel tank, for recycling from the draining
The hydraulic oil of 802 discharge of mouth.
Fig. 4 is the arrangement schematic diagram of the mounting plate of bracket in quick-closing valve provided in an embodiment of the present invention；In conjunction with Fig. 4, bracket 4
It is arranged between drive cylinder 5 and quick-closing valve seat 1, and bracket 4 is provided with the mounting plate for being fixedly connected with quick-closing valve seat 1
401, which is provided with the first through hole 401a communicated and the second through-hole 401b, first through hole 401a and the second through-hole
401b is passed through by 3 activity of quick-closing valve core, and the internal diameter of first through hole 401a and the outer diameter of quick-closing valve core 3 match, the second through-hole
The internal diameter of 401b is greater than the internal diameter of first through hole 401a, is filled with sealing material 10, the second through-hole 401b in the second through-hole 401b
It being sealed by the sealing nut 9 being threadedly engaged with the second through-hole 401b, 9 sliding sleeve of sealing nut is mounted on quick-closing valve core 3, to prevent
Only steam leakage.
In the embodiment of the present invention, first through hole 401a and the second through-hole 401b can in this way may be used successively close to drive cylinder 5
To facilitate the disassembly of sealing nut 9, to supplement sealing material.
In the embodiment of the present invention, it is provided with the hole passed through by quick-closing valve core 3 on sealing nut 9, needs to sealing material 10
When being supplemented, rotating gland nut 9, sealing nut 9 can be screwed out out of second through-hole 401b along quick-closing valve core 3.
Sealing material 10 in the embodiment of the present invention has the function of steam seal, can be flexible graphite packing etc..
In the embodiment of the present invention, the mounting plate 401 of bracket 4 can be mounted on quick-closing valve seat 1 by bolt.
Bracket 4 in the embodiment of the present invention can use integrated casting structure, to guarantee that it is good rigid that bracket 4 has
Property, and guarantee that 8 installation place of pilot sleeve has enough intensity, quick-closing valve core 3 is prevented because rigidity is not enough deformed, blocks
Etc. failures.
In the embodiment of the present invention, since drive cylinder is mounted on the outer wall of quick-closing valve seat 1 by bracket 4, speed is closed
The length of spool 3 needs to lengthen, and then quick-closing valve core 3 is made to have sufficiently long span, to guarantee that the both ends of quick-closing valve core 3 have
Sufficient heat-dissipating space, prevents high temperature caused by the steam medium of quick-closing valve door 2 to be transferred at drive cylinder 5.
In the embodiment of the present invention, driving can be connected between lower cover 503 and mounting plate 401 by multiple support rods 402, with
Structure is reinforced.
In the embodiment of the present invention, a threaded hole 201 can be set on quick-closing valve door 2, quick-closing valve core 3 is plugged in the spiral shell
In pit 201, and locked by locking nut 202.The screw thread being thread through by quick-closing valve core 3 is provided on locking nut 202
Hole.
In the embodiment of the present invention, which can also include oil intake assembly and oil return component, wherein oil intake assembly includes
Oil pump 11, the first oil inlet pipe 12 and the second oil inlet pipe 13, oil pump 11 pump the hydraulic oil with certain pressure from fuel tank, the liquid
Pressure oil divides two-way to enter in drive cylinder 5, wherein entering driving by the first oil inlet pipe 12 and the first oil inlet 511 all the way
In the oil cylinder cavity of resorption of oil cylinder 5, in addition passes through the second oil inlet pipe 13 all the way and the second oil inlet 512 of drivig cylinder 501 is set
It enters in the cylinder upper cavity oil of drive cylinder 5；And oil return component includes the first oil return pipe 15, the second oil return pipe 16 and solenoid valve
14, when battery valve 14 is opened, the hydraulic oil in the oil cylinder cavity of resorption of drive cylinder 5 passes through the first oil discharge outlet 505, the first oil return pipe
15 and battery valve 14 be back to fuel tank, the hydraulic coupling of oil cylinder cavity of resorption disappears, and drives piston 504 in the second compression elastic piece 508
It is moved downward under spring-force driven dual, meanwhile, the hydraulic oil controlled in oil cylinder 7 passes through logical hydraulic fluid port 706, the second oil return pipe 16 and electromagnetism
Valve 14 is back to fuel tank, and the hydraulic coupling of control 704 lower end surface of piston disappears, and controls piston 704 in the first compression elastic piece 707
It is moved down under the action of spring force, slide bar 601 is pushed to move downward, disconnect the second oil discharge outlet 506 with driving epicoele, in this way
Just the hydraulic oil in the cylinder upper cavity oil of drive cylinder 5 can be made gradually to establish pressure, control piston is further pushed to transport downwards
It is dynamic, realize the closing function of quick-closing valve, the open function of quick-closing valve is identical with closing function basic principle, and this will not be repeated here.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of quick-closing valve, the quick-closing valve includes quick-closing valve seat, quick-closing valve door, quick-closing valve core and drive cylinder, and the speed is closed
Valve seat has air intake, air port and the steam drain being sequentially communicated, and the quick-closing valve door is openable and closable to be arranged in the air port
On, one end of the quick-closing valve core is fixedly connected on the quick-closing valve door, and the other end of the quick-closing valve core stretches out the speed
Close the side wall of valve seat, which is characterized in that
The drive cylinder is fixedly mounted on the side wall of the quick-closing valve seat, and driving piston is provided in the drive cylinder,
The driving piston will be divided into driving epicoele and driving cavity of resorption inside the drive cylinder, the side wall of the driving cavity of resorption is provided with
First oil inlet and the first oil discharge outlet, the other end of the quick-closing valve core are protruded into intracavitary under the driving and are lived with the driving
Plug is fixedly connected, and the side wall of the driving epicoele is provided with the second oil inlet, and the drive cylinder is far from the quick-closing valve seat
End is axially provided with mounting hole along the drive cylinder, and the second oil discharge outlet is offered on the hole wall of the mounting hole；
The quick-closing valve further includes control mechanism and control oil cylinder；
The control mechanism includes slide bar, first connecting rod and second connecting rod, and the slide bar is movably arranged in the mounting hole, institute
It states and is provided with oil drain passage in slide bar, one end of the oil drain passage is communicated with the inside of the driving epicoele, and the oil extraction is logical
The other end in road is operationally communicated with second oil discharge outlet, and the first connecting rod is axially displaceably inserted into the driving
The axis direction of end of the oil cylinder far from the quick-closing valve seat, the moving direction of the first connecting rod and the slide bar is in angle,
One end of the first connecting rod is overlapped on the slide bar on one end of the driving piston, the other end of the first connecting rod
It is hinged with one end of the second connecting rod, it is hinged in the middle part of the second connecting rod on the control oil cylinder, the second connecting rod
Dynamic clamping head and quiet clamping head is provided between the control oil cylinder；
The control oil cylinder is mounted in the drive cylinder, is provided with control piston rod, the control in the control oil cylinder
The telescopic end of piston rod is detachably provided in the slide bar on one end of the driving piston.
2. quick-closing valve according to claim 1, which is characterized in that the slide bar includes inside the drive cylinder to institute
The first bar portion and the second bar portion set gradually outside drive cylinder is stated, the diameter of second bar portion is greater than first bar portion
Diameter, the mounting hole includes inside the drive cylinder to the first mounting hole set gradually outside the drive cylinder
With the second mounting hole, the internal diameter of first mounting hole is consistent with the outer diameter of first bar portion, second mounting hole
Internal diameter is consistent with the outer diameter of second bar portion.
3. quick-closing valve according to claim 2, which is characterized in that the end of second bar portion is provided with positive stop lug boss,
The diameter of the positive stop lug boss is less than the diameter of second bar portion, and one end of the first connecting rod is detachably provided in described
The side of positive stop lug boss.
4. quick-closing valve according to claim 1, which is characterized in that one end of the second connecting rod is provided with kidney slot, institute
The length direction for stating kidney slot is identical as the length direction of the second connecting rod, and one end of the second connecting rod passes through the kidney-shaped
Hole and the other end of the first connecting rod are hinged.
5. quick-closing valve according to claim 1, which is characterized in that be provided with the first pressure in the rodless cavity of the control oil cylinder
Contracting elastic component.
6. quick-closing valve according to claim 1-5, which is characterized in that intracavitary in the driving of the drive cylinder to set
It is equipped with the second compression elastic piece, the both ends of second compression elastic piece are remote with the driving piston and the drive cylinder respectively
End connection from the quick-closing valve seat.
7. quick-closing valve according to claim 6, which is characterized in that the drive cylinder at least have one section in described the
The column that two compression elastic piece outer diameters match.
8. quick-closing valve according to claim 1-5, which is characterized in that the driving piston is towards the quick-closing valve
It is provided with convex block on the end face of seat, the drive cylinder has corresponding with the convex block recessed close to the end of the quick-closing valve seat
Slot, first oil discharge outlet are provided with the drive cylinder on one end of the quick-closing valve seat, first oil discharge outlet with
The groove is correspondingly arranged and communicates, and the aperture of first oil discharge outlet is less than the aperture of the groove.
9. quick-closing valve according to claim 8, which is characterized in that the drive cylinder is close to one end of the quick-closing valve seat
It is inside provided with the pilot sleeve passed through by the quick-closing valve core activity, there is profit between the pilot sleeve and the quick-closing valve core
Sliding gap.
10. quick-closing valve according to claim 9, which is characterized in that it is close that the pilot sleeve is pierced by the drive cylinder
The position of one end of the quick-closing valve seat is provided with drain tap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610976467.9A CN106641411B (en) | 2016-11-07 | 2016-11-07 | Quick-closing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610976467.9A CN106641411B (en) | 2016-11-07 | 2016-11-07 | Quick-closing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106641411A CN106641411A (en) | 2017-05-10 |
| CN106641411B true CN106641411B (en) | 2019-02-05 |
Family
ID=58805273
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610976467.9A Active CN106641411B (en) | 2016-11-07 | 2016-11-07 | Quick-closing valve |
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| Country | Link |
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| CN (1) | CN106641411B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723897B (en) * | 2017-10-27 | 2020-10-16 | 赵斌 | Large-flux normally open normally closed electromagnetic valve |
| CN114233408B (en) * | 2021-12-28 | 2022-10-25 | 靖江市新博液压件有限公司 | Emergency trip hydraulic device with sequence valve |
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|---|---|---|---|---|
| US4418764A (en) * | 1981-07-14 | 1983-12-06 | Giken Kogyo Kabushiki Kaisha | Fluid impulse torque tool |
| US5399071A (en) * | 1992-04-07 | 1995-03-21 | Abraham; Moshe | Pressure booster |
| CN202302083U (en) * | 2011-10-18 | 2012-07-04 | 天津国际机械有限公司 | Hydraulic three-way stop valve |
| CN202596803U (en) * | 2012-05-28 | 2012-12-12 | 郭伟 | Emergency governor pilot valve for steam turbines |
| CN203702269U (en) * | 2014-03-12 | 2014-07-09 | 南京汽轮电机(集团)有限责任公司 | Low-pressure single-side hydraulic servo-motor |
| CN204042151U (en) * | 2014-09-10 | 2014-12-24 | 重庆红江机械有限责任公司 | A kind of speed closes stop valve |
| CN105065696A (en) * | 2015-08-19 | 2015-11-18 | 武汉船用机械有限责任公司 | Quick-closing regulating valve |
-
2016
- 2016-11-07 CN CN201610976467.9A patent/CN106641411B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4418764A (en) * | 1981-07-14 | 1983-12-06 | Giken Kogyo Kabushiki Kaisha | Fluid impulse torque tool |
| US5399071A (en) * | 1992-04-07 | 1995-03-21 | Abraham; Moshe | Pressure booster |
| CN202302083U (en) * | 2011-10-18 | 2012-07-04 | 天津国际机械有限公司 | Hydraulic three-way stop valve |
| CN202596803U (en) * | 2012-05-28 | 2012-12-12 | 郭伟 | Emergency governor pilot valve for steam turbines |
| CN203702269U (en) * | 2014-03-12 | 2014-07-09 | 南京汽轮电机(集团)有限责任公司 | Low-pressure single-side hydraulic servo-motor |
| CN204042151U (en) * | 2014-09-10 | 2014-12-24 | 重庆红江机械有限责任公司 | A kind of speed closes stop valve |
| CN105065696A (en) * | 2015-08-19 | 2015-11-18 | 武汉船用机械有限责任公司 | Quick-closing regulating valve |
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| Publication number | Publication date |
|---|---|
| CN106641411A (en) | 2017-05-10 |
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