CN107387783A - A kind of stop valve - Google Patents
A kind of stop valve Download PDFInfo
- Publication number
- CN107387783A CN107387783A CN201710795634.4A CN201710795634A CN107387783A CN 107387783 A CN107387783 A CN 107387783A CN 201710795634 A CN201710795634 A CN 201710795634A CN 107387783 A CN107387783 A CN 107387783A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- liquid storage
- storage cylinder
- stop valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- 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
- F16K1/32—Details
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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
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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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
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
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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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
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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
- F16K41/00—Spindle sealings
- F16K41/10—Spindle sealings with diaphragm, e.g. shaped as bellows or tube
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
Abstract
The invention provides a kind of stop valve, including：Valve body, there is closed working chamber, be provided with first interface, second interface and mounting hole；Core assembly, including be installed on the valve rod of mounting hole and be arranged at the first flap of valve rod；First flap is with stem movement on or off first interface and second interface；Interim liquid storage cylinder, there is the closed cavity comprising valve rod Yu mounting hole cooperation position outside working chamber to be arranged at；Unidirectional return-flow structure, the interim liquid storage cylinder of one-way conduction flow to the passage of working chamber.By setting interim liquid storage cylinder and unidirectional return-flow structure, the problem of retaining radioactive liquid medium raffinate after bellows bursts in the prior art is avoided, the risk and harmfulness that personnel are shone when reducing cut-off valve replacement and maintenance.Simultaneously because stop valve radioactive level reduces, so as to reduce the requirement that facility is changed to maintenance, the construction costs such as equipment, factory building are saved, there is very big economic benefit and social benefit.
Description
Technical field
The present invention relates to pipeline connecting parts technical field, and in particular to a kind of stop valve.
Background technology
At present, there is the advantages of " zero leakage " as the bellows stop valve door of potted component using corrugated stainless steel tubing,
Therefore it is widely used in the process pipe of the nuclear facilities such as nuclear fuel reprocessing plant.
Chinese Publication No. CN103244696A patent provides a kind of valve rod and does not rotate external-compression type bellows stop valve,
It is by valve body, valve element, special-purpose metal bellows, valve seat, bonnet, flange, filler, valve rod, regulating part, valve stem nut, axle sleeve etc.
One end welded seal of composition, special-purpose metal bellows a ends and valve element, special-purpose metal bellows b ends seal with flange welding, valve
One end of core is connected with threaded stem, forms bellows component；It is placed in valve seat, flange above and below has metal respectively
Sealing ring b and metal o-ring c, the screw thread of bonnet coordinates fit sealing and tighten lower locknut with the screw thread on valve seat top to be fixed；
Valve seat bottom, which has by screw thread to match somebody with somebody between metal o-ring a and valve body top, merges fit sealing；Two Packing seats are being filled out respectively
The upper and lower ends of material, it is placed in bonnet between valve rod, regulating part screws in the internal thread of bonnet and adjusted with spanner, makes its compression
Filler reaches after sealing effectiveness upper locknut locking positioning.It can be used for that control carrying is poisonous, has radioactivity or inflammable and explosive etc.
The keying of the industrial pipeline of hazardous medium.
But above-mentioned bellows stop valve has very big defect.Due to the particularity of nuclear facilities use environment, in bellows
When shutoff valve damage needs to change, in order to avoid operating personnel are endangered, it is necessary to using special maintenance by radioactive radiation
Container is changed to carry out demolition and replacement.Although structure is normal used by the bellows stop valve door that above-mentioned patent provides
There is the advantages of " zero leakage " under operating mode, it is well known that bellows has certain service life, and nuclear facilities design
Service life is longer, therefore bellows has the possibility ruptured to bellows stop valve in use.Once but ripple
Line tracheal rupture, it can not be discharged after entering the bellows of rupture due to radiating medium, become new radioactive source, and then add
Radioactivity, causing maintenance to change the shielding thickness of container exponentially increases and (such as increases to 300mm from 50mm), and container is changed in maintenance
Weight may reach tens tons of weights, substantially increase equipment manufacturing cost.Maintenance hot cell shielding requirements and crane are considered in addition
Ability, engineering construction cost will be greatly increased.And it can greatly improve bellows due to retaining radioactive liquid waste in bellows
The difficulty that stop valve waste is disassembled and handled.
Leaked in addition, the fracture failure of bellows is likely to result in radionuclide along valve rod, operating personnel are caused to hinder
Evil.
The content of the invention
Therefore, the technical problem to be solved in the present invention is to overcome bellows stop valve of the prior art due to bellows
The defects of leakage produces injury to operating personnel in the increase of maintenance difficulty caused by failure and cost and radionuclide, so as to
A kind of check-valve piece is provided.
Therefore, the invention provides a kind of stop valve, including：
Valve body, there is closed working chamber, offer connection exterior line and the first interface of the working chamber and second
Interface, and, for installing the mounting hole of valve rod；
Core assembly, including the valve rod and the first flap, the valve rod is movable to be installed on the mounting hole, corresponding institute
State and first flap is provided with the valve rod in working chamber；First flap the valve rod driving under conducting or
End the first interface and the second interface；
Interim liquid storage cylinder, it is arranged at outside the working chamber, to coordinate position with including the valve rod and the mounting hole
The closed cavity put；
Unidirectional return-flow structure, interim liquid storage cylinder described in one-way conduction flow to the passage of the working chamber.
Optionally, including the bellows of the valve rod is sheathed on, described bellows one end is connected with the valve seal, separately
One end is connected with the valve stem seal, and the bellows, the valve rod and the valve body encircling space are the interim liquid storage cylinder.
Optionally, including the intermediate sleeve of the valve rod is sheathed on, described intermediate sleeve one end is connected with the valve seal, separately
One end is connected by seal with the valve stem seal, and the seal, the intermediate sleeve, the valve rod and the valve body surround
Space is the interim liquid storage cylinder.
Optionally, the interface channel for turning on the interim liquid storage cylinder and the working chamber is provided with the valve body, it is described
Check valve is provided with interface channel path, the interface channel and the check valve are the unidirectional return-flow structure.
Optionally, the valve rod can slide under the limitation of the mounting hole along axis, have connection institute in the valve body
First interface and the connecting hole of the second interface are stated, the valve rod slides along axis and drives first flap to turn on and cut
The only connecting hole.
Optionally, the mounting hole has the extension of setting length along the valve rod bearing of trend, and the valve rod offers
There is the backflash of setting length along bearing of trend；During the stem movement to the stop valve rest position, the backflash
Lower end is located at the lower section of the mounting hole lower surface, upper end in the interim liquid storage cylinder, turn on the interim liquid storage cylinder and
The working chamber；During the stem movement to the stop valve conduction position, the backflash moves to the mounting hole upper end
Blocked above face, end the interim liquid storage cylinder and the working chamber；The backflash is the unidirectional return-flow structure.
Optionally, the second flap is provided with the valve rod in the corresponding working chamber, second flap is setting
When the second seal convexity of the stem outer circumference, the stem movement to the stop valve conduction position, second sealing
The respective outer side edges of raised mounting hole lower surface periphery corresponding with the valve body are to seal the valve rod and the mounting hole
Cooperation position.
Optionally, the connecting hole includes the first hole wall for having setting length extension along the stem movement direction, institute
State the first flap be with the connecting hole coordinate sleeve, the sleeve have with outside the first of the first hole wall close fit
Wall, the sleeve top seal, lower end offers the first opening；Delivery hole, first valve are offered on first outer wall
When valve moves to the stop valve conduction position, the delivery hole turns on the second interface.
Optionally, first flap corresponds to the periphery of the sleeve tip position and is provided with the first seal convexity, described
When first flap moves to the stop valve rest position, on the first seal convexity connecting hole corresponding with the valve body
The sealing structure fitting of end face periphery.
Optionally, when first flap moves to the stop valve conduction position, the delivery hole is higher than the connection
Hole upper surface.
Optionally, the valve body includes seal receptacle and closure, has construction opening, the closure on the seal receptacle
Cover the construction opening and be installed on the seal receptacle, the installation for installing the valve rod is offered on the closure
Hole.
Optionally, including the valve sleeve that is sheathed on the outside of the valve rod and the interim liquid storage cylinder, the valve sleeve
Lower end is provided with first flange, and the seal receptacle is provided with the second flange coordinated with the first flange, the valve sleeve
It is connected with the seal receptacle by flange.
Optionally, hydrops groove, the hydrops groove and the valve are opened up between the first flange and the second flange
Cavity between sleeve pipe and the interim liquid storage cylinder communicates, and the radioactive liquid for accumulating the interim liquid storage cylinder leakage is situated between
Matter, the hydrops groove are connected with the discharging tube that inner radiation liquid medium is drained to outside.
Optionally, including the bellows of the valve rod being sheathed on, described bellows one end is connected with the seal cap sealing,
The other end is connected with the valve stem seal, and the bellows, the valve rod and the closure encircling space are the interim storage
Sap cavity；The opposite side that the closure corresponds to the seal receptacle is provided with clamping sleeve for compressing the closure, the pressure
Surrounded between tight set and the bellows and form intermediate cavity, cooperation position and institute between the intermediate sleeve and the closure
State the cooperation position between seal receptacle and the valve sleeve and offer the sump pit for connecting the intermediate cavity and the hydrops groove.
Technical solution of the present invention, have the following advantages that：
1. a kind of stop valve provided by the invention, by setting interim liquid storage cylinder and unidirectional return-flow structure, avoid existing
The problem of a large amount of radioactive liquid media are retained after bellows bursts in technology, greatly reduce cut-off valve replacement and maintenance
When the personnel risk and harmfulness shone.Simultaneously as core assembly carries few radioactive liquid medium residual amount secretly when changing,
So as to reduce the shielding thickness of core assembly Special Servicing Equipment, make its weight saving, reduce and facility is changed to maintenance
It is required that having saved the construction costs such as equipment, factory building, and radiological hazard is reduced, therefore there is very big economic benefit
And social benefit.
2. a kind of stop valve provided by the invention, when the first flap moves to stop valve conduction position, the first flap is led
Fluid apertures is higher than connecting hole upper surface, is so designed that, it is possible to reduce flows through wash away damage of the liquid to sealing surface, ensures sealing structure
Reliability.
A kind of 3. stop valve provided by the invention, by setting sump pit, hydrops groove and discharging tube so that even in ripple
When the damage such as occurs rupturing in pipe, radioactive liquid medium raffinate can be passed through into sump pit, hydrops groove and discharging tube row in time
To stop valve, reduce the radiating medium residual volume carried secretly when core assembly is changed, be easy to that stop valve change and
Maintenance, the risk and harmfulness that personnel are shone when reducing cut-off valve replacement and maintenance.
4. a kind of stop valve provided by the invention, there is multi-sealing structure, by above-mentioned multi-sealing structure, add
The reliability of the stop valve, stop valve internal liquid in long-term use can be efficiently avoid and leaked.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of stop valve embodiment closed mode provided by the invention；
Fig. 2 is a kind of structural representation of stop valve embodiment opening provided by the invention；
Fig. 3 is the structural representation of another stop valve embodiment closed mode provided by the invention；
Fig. 4 is the structural representation of another stop valve embodiment opening provided by the invention；
Description of reference numerals：
1- first interfaces, 2- connecting holes, 3- seal receptacles, 4- discharging tubes, 5- second flanges, the sealing structures of 6- the 3rd, 7-
One flange, 8- hydrops groove, 9- threaded connectors, the sealing structures of 10- the 4th, 11- valve sleeves, 12- connectors, 13- clamping sleeves,
The interim liquid storage cylinder of 14- valve rods, 15-, 16- bellowss, 17- closures, 18- sump pits, 19- backflashes, 20- mounting holes, 21-
Two flaps, 22- pins, 23- spherical crowns, 24- second interfaces, the sealing structures of 25- first, 26- adapter sleeves, the flaps of 27- first, 28- rows
Fluid apertures, 29- intermediate cavities, 30- second seals structures, 31- working chambers, 32- delivery holes, 33- stuffing-boxes, 34- intermediate sleeves, 35- connect
Connect road, 36- check valves.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
A kind of figures 1 and 2 show that embodiment of stop valve provided by the invention.
The stop valve includes valve body and core assembly.Wherein, valve body includes seal receptacle 3 and closure 17.Opened on seal receptacle 3
Provided with the construction opening for installing closure 17.Closure 17 is covered in construction opening and is seal-installed on seal receptacle 3, and close
Envelope seat 3 forms closed working chamber 31.Have on seal receptacle 3 connection external connection pipe fitting and working chamber 31 first interface 1 and
Second interface 24, and, it is arranged inside seal receptacle 3 and is used for conducting first between first interface 1 and second interface 24
Interface 1 and the connecting hole of second interface 24 2.Wherein, selecting first interface 1, second interface 24 is stop valve to end valve inlet
Outlet.The mounting hole 20 relative with connecting hole 2 is offered on closure 17.
Core assembly includes valve rod 14.Valve rod 14 is circular rod-shaped configuration, and closure 17 is installed on by mounting hole 20.Peace
Dress hole 20 is cylindrical hole, has the extension of setting length.Valve rod 14 and the coaxial cooperation of mounting hole 20, and can be along the axle of mounting hole 20
Line slides up and down.The end set that valve rod 14 is located in working chamber 31 has the first flap 27 coordinated with connecting hole 2.Specifically,
The end that the flap 27 of valve rod 14 and first coordinates is the spherical crown 23 of dome-type structure, and there is at the top of the first flap 27 valve rod 14 to coordinate
Adapter sleeve 26, adapter sleeve 26 offers mounting groove of the opening towards valve rod 14, and spherical crown 23 leads to against the interior baseplane of mounting groove
Pin 22 is crossed to be connected valve rod 14 with the first flap 27.The outage 28 with installation trench bottom insertion is further opened with adapter sleeve 26,
The setting of outage 28 can discharge the radioactive liquid medium accumulated in mounting groove in time, reduce cut-off valve replacement and maintenance
When the personnel risk and harmfulness shone, be easy to the maintenance and replacing of core assembly.
Connecting hole 2 is cylindrical hole, including has the first hole wall of setting length extension along the direction of motion of valve rod 14.First
The lower section of the corresponding adapter sleeve 26 of flap 27 is sleeve coordinating with connecting hole 2, extending along the direction of motion of valve rod 14, the sleeve its
The first opening is offered with the first outer wall with the first hole wall close fit, top seal, lower end.Offered on first outer wall
Delivery hole 32.First outer wall fits in the first hole wall and moved up and down under the drive of valve rod 14, moves to stop valve conduction position
When, delivery hole 32 turns on second interface 24, and then turns on first interface 1 and second interface 24.Sleeve corresponds to apical position
Periphery is provided with the first seal convexity, and first seal convexity is right with seal receptacle 3 when valve rod 14 moves stop valve cut-off state
The sealing structure of the upper surface periphery of connecting hole 2 is answered to be bonded.
Delivery hole 32 is highly higher than the upper surface of connecting hole 2 when in stop valve conduction position.It is so designed that, is ending
Valve conducting state radioactive liquid medium by when, sealing of the delivery hole 32 higher than the corresponding upper surface periphery of connecting hole 2 of seal receptacle 3
Face, reduction flow through radioactive liquid medium and wash away damage to sealing surface.
The second flap 21 is provided with the valve rod 14 of the corresponding top position of first flap 27.Second flap 21 is to be arranged at valve
Second seal convexity of the periphery of bar 14, second seal convexity are corresponding with closure 17 when valve rod 14 moves to conducting state
The sealing structure fitting of the lower surface periphery of mounting hole 20, prevent the radioactive liquid medium inside working chamber 31 along valve rod 14 with pacifying
Fill the leakage of the cooperation position of hole 20.And closure 17 can be taken out of in the lump when detachable maintaining is changed.
The corresponding top of closure 17 of valve rod 14 is provided with bellows 16, and the one end of bellows 16 is welded in closure 17, another
End is tightly connected with valve rod 14.The link position of bellows 16 and closure 17 encirclement valve rod 14 is matched somebody with somebody with the upper surface of mounting hole 20
Joint close gap.Interim liquid storage cylinder 15 is formed between bellows 16 and valve rod 14.Valve rod 14 is offered along axis, and there is setting length to prolong
The backflash 19 stretched.When valve rod 14 moves to stop valve rest position, the lower end of backflash 19 is located under the lower surface of mounting hole 20
Side, upper end are located in interim liquid storage cylinder 15, turn on interim liquid storage cylinder 15 and working chamber 31, for will accumulate in interim liquid storage cylinder 15
Radioactive liquid medium export into working chamber 31.When valve rod 14 moves to stop valve conduction position, backflash 19 moves to
Hole 20 is mounted above the upper surface of mounting hole 20 to block, and ends interim liquid storage cylinder 15 and working chamber 31.Backflash 19 returns to be unidirectional
Flow structure.The technical program is avoided in the prior art in bellows by setting interim liquid storage cylinder 15 and unidirectional return-flow structure
The problem of retaining a large amount of radioactive liquid media after 16 ruptures, personnel are shone when greatly reducing cut-off valve replacement and maintenance
Risk and harmfulness.Simultaneously as core assembly and closure 17 carry few radioactive liquid medium residual amount secretly when changing, from
And reduce the shielding thickness of core assembly and the Special Servicing Equipment of closure 17, make its weight saving, reduce to overhauling more
The requirement of facility is changed, has saved the construction costs such as equipment, factory building, and reduces radiological hazard, therefore with very big
Economic benefit and social benefit.
The top of corresponding closure 17 is additionally provided with the clamping sleeve 13 for being sheathed on valve rod 14 and the outside of bellows 16.Clamping sleeve
13 compress the upper surface of closure 17, and closure 17 is firmly secured into seal receptacle 3.Clamping sleeve 13 surrounds and forms intermediate cavity 29.
The periphery of clamping sleeve 13 is arranged with valve sleeve 11.The lower end of valve sleeve 11 is provided with first flange 7, is provided with seal receptacle 3
The second flange 5 coordinated with first flange 7.First flange 7 and second flange 5 are connected through a screw thread the close fit of part 9.First method
Hydrops groove 8 is offered between orchid 7 and second flange 5.Hydrops groove 8 is connected with is drained to outside by inner radiation liquid medium
Discharging tube 4.
The cooperation position between cooperation position and seal receptacle 3 and valve sleeve 11 between clamping sleeve 13 and closure 17
Offer connection intermediate cavity 29 and the sump pit 18 of hydrops groove 8.The setting of sump pit 18, hydrops groove 8 and discharging tube 4 causes in ripple
When the damage such as occurs rupturing in line pipe 16, radioactive liquid medium raffinate is passed through into sump pit 18, hydrops groove 8 and discharging tube in time
4 drain into outside stop valve, reduce the radioactive liquid medium residual amount carried secretly when core assembly is changed, easy to replace and maintain.
The stop valve that the technical program provides, has multi-sealing structure.Specifically include：
First sealing structure 25, in stop valve cut-off state, on the first seal convexity connecting hole 2 corresponding with seal receptacle 3
The structure of end face periphery is sticked to form sealing and coordinated, and realizes and radioactive liquid medium in stop valve is blocked.
Second seals structure 30, in stop valve conducting state, under the second flap 21 mounting hole 20 corresponding with closure 17
The structure of end face periphery is sticked to form, and prevents from leaking on radioactive liquid medium when stop valve from turning on.
3rd sealing structure 6, it is sticked to form between first flange 7 and second flange 5.
4th sealing structure 10, the structure fitting of the construction opening upper surface periphery corresponding with seal receptacle 3 of closure 17 compress
Composition.
By above-mentioned multi-sealing structure, the reliability of the stop valve is added, stop valve can be efficiently avoid in length
Phase is leaked using middle inner radiation liquid medium.
The operation principle of the stop valve is：
Stop valve cut-off state, Fig. 1 being refer to, the first flap 27 coordinates with connecting hole 2, forms the first sealing structure 25,
Delivery hole 32 is blocked by the first hole wall, realizes the cut-off to connecting hole 2, that is, realizes the cut-off of first interface 1 and second interface 24.
Now, backflash 19 turns on interim liquid storage cylinder 15 and working chamber 31, by the radioactive liquid medium raffinate in interim liquid storage cylinder 15
Working chamber 31 is expelled to, is then discharged by second interface 24.
Stop valve conducting state, refer to Fig. 2, and radioactive liquid medium passes through the in cut-off valve inlet (first interface 1)
One interface 1, delivery hole 32, it flow to cut-off valve outlet (second interface 24).Second flap 21 fits in the corresponding installation of closure 17
The structure of the lower surface periphery of hole 20, prevent cooperation position of the radioactive liquid medium along mounting hole 20 and valve rod 14 in working chamber 31
Put leakage, a small amount of leakage during ON-OFF valve be present, interim liquid storage cylinder 15 can be temporarily stored into.
As the embodiment of another unidirectional return-flow structure, Fig. 3 and Fig. 4 are refer to, connection is provided with closure 17
The interface channel 35 of interim liquid storage cylinder 15 and working chamber 31, check valve 36 is provided with interface channel 35, the check valve 36 is unidirectional
The passage that interim liquid storage cylinder 15 flows to working chamber 31 is turned on, interface channel 35 and check valve 36 form unidirectional return-flow structure.
As the another embodiment of interim liquid storage cylinder 15, Fig. 3 and Fig. 4 are refer to, the periphery of valve rod 14 is arranged with centre
Set 34, the lower end of intermediate sleeve 34 and the welded seal of closure 17, welding position surround the upper valve rod 14 of closure 17 and mounting hole 20
Cooperation position, upper end are tightly connected by stuffing-box 33 and valve rod 14.Stuffing-box 33, intermediate sleeve 34, valve rod 14 and closure 17
Encircling space is interim liquid storage cylinder 15.Stuffing-box 33 is seal.It should be evident that it can use well known to those skilled in the art
Sealing structure is replaced.The top of corresponding intermediate sleeve 34 is provided with the clamping sleeve 13 for compressing intermediate sleeve 34, and the compressing member 13 will
Intermediate sleeve 34 is firmly secured to closure 17.
Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (14)
- A kind of 1. stop valve, it is characterised in that including：Valve body, there is closed working chamber (31), offer the first interface (1) of connection exterior line and the working chamber (31) With second interface (24), and, for installing the mounting hole (20) of valve rod (14)；Core assembly, including the valve rod (14) and the first flap (27), the valve rod (14) is movable to be installed on the installation Hole (20), correspond to and be provided with first flap (27) on the valve rod (14) in the working chamber (31)；First valve Valve (27) first interface (1) described on or off and second interface (14) under the valve rod (14) driving；Interim liquid storage cylinder (15), it is outside to be arranged at the working chamber (31), for including the valve rod (14) and the installation The closed cavity of hole (20) cooperation position；Unidirectional return-flow structure, interim liquid storage cylinder (15) described in one-way conduction flow to the passage of the working chamber (31).
- 2. stop valve according to claim 1, it is characterised in that：Bellows including being sheathed on the valve rod (14) (16), described bellows (16) one end is connected with the valve seal, and the other end is tightly connected with the valve rod (14), the ripple Line pipe (16), the valve rod (14) and the valve body encircling space are the interim liquid storage cylinder (15).
- 3. stop valve according to claim 1, it is characterised in that：Intermediate sleeve (34) including being sheathed on the valve rod, institute State intermediate sleeve (34) one end to be connected with the valve seal, the other end is tightly connected by seal and the valve rod (14), institute It is the interim liquid storage cylinder (15) to state seal, the intermediate sleeve (34), the valve rod (14) and the valve body encircling space.
- 4. according to the stop valve described in claim any one of 1-3, it is characterised in that：It is provided with described in conducting and faces on the valve body When liquid storage cylinder (15) and the working chamber (31) interface channel (35), be provided with check valve on interface channel (35) path (36), the interface channel (35) and the check valve (36) are the unidirectional return-flow structure.
- 5. according to the stop valve described in claim any one of 1-3, it is characterised in that：The valve rod (14) can be in the mounting hole (20) slided under limitation along axis, have in the valve body and connect the first interface (1) and the second interface (24) Connecting hole (2), the valve rod (14) are slided along axis and drive first flap (27) to turn on and end the connecting hole (2)。
- 6. stop valve according to claim 5, it is characterised in that：The mounting hole (20) is along the valve rod (14) extension side To the extension with setting length, the valve rod (14) offers the backflash (19) for having setting length along bearing of trend；Institute When stating valve rod (14) and moving to the stop valve rest position, backflash (19) lower end is located at the mounting hole (20) lower end The lower section in face, upper end turn on the interim liquid storage cylinder (15) and the working chamber (31) in the interim liquid storage cylinder (15)； When the valve rod (14) moves to the stop valve conduction position, the backflash (19) moves to the mounting hole (20) upper end Blocked above face, end the interim liquid storage cylinder (15) and the working chamber (31)；The backflash (19) is described unidirectional Return-flow structure.
- 7. stop valve according to claim 5, it is characterised in that：The valve rod (14) in the corresponding working chamber (31) On be provided with the second flap (21), second flap (21) is the second seal convexity for being arranged at the valve rod (14) periphery, When the valve rod (14) moves to the stop valve conduction position, the second seal convexity installation corresponding with the valve body The respective outer side edges of hole lower surface periphery are to seal the cooperation position of the valve rod (14) and the mounting hole (20).
- 8. stop valve according to claim 5, it is characterised in that：The connecting hole (2) includes transporting along the valve rod (14) Dynamic direction has the first hole wall of setting length extension, and first flap (21) is the sleeve coordinated with the connecting hole (2), The sleeve has the first outer wall with the first hole wall close fit, and the sleeve top seal, lower end offers first Opening；Delivery hole (32) is offered on first outer wall, first flap (27) moves to the stop valve conduction position When, the delivery hole (32) turns on the second interface (24).
- 9. stop valve according to claim 8, it is characterised in that：Position at the top of the corresponding sleeve of first flap (27) The periphery put is provided with the first seal convexity, when first flap (27) moves to the stop valve rest position, described The sealing structure fitting of one seal convexity connecting hole (2) the upper surface periphery corresponding with the valve body.
- 10. stop valve according to claim 8 or claim 9, it is characterised in that：First flap (27) moves to the cut-off During valve conduction position, the delivery hole (32) is higher than the connecting hole (2) upper surface.
- 11. stop valve according to claim 1, it is characterised in that：The valve body includes seal receptacle (3) and closure (17), there is construction opening, the closure (17) covers the construction opening and is installed on the sealing on the seal receptacle (3) Seat (3), the mounting hole (20) for installing the valve rod (14) is offered on the closure (17).
- 12. stop valve according to claim 11, it is characterised in that：Including being sheathed on the valve rod (14) and described interim Valve sleeve (11) on the outside of liquid storage cylinder (15), valve sleeve (11) lower end are provided with first flange (7), the seal receptacle (3) second flange (5) coordinated with the first flange (7) is installed, the valve sleeve (11) is logical with the seal receptacle (3) Cross flange mating connection.
- 13. stop valve according to claim 12, it is characterised in that：The first flange (7) and the second flange (5) Between open up chamber between hydrops groove (8), the hydrops groove (8) and the valve sleeve (11) and the interim liquid storage cylinder (15) Body phase is led to, and for accumulating the radioactive liquid medium of interim liquid storage cylinder (15) leakage, the hydrops groove (8) is connected with will be interior Portion's radioactive liquid medium is drained to the discharging tube (4) of outside.
- 14. stop valve according to claim 13, it is characterised in that：Bellows including being sheathed on the valve rod (14) (16), described bellows (16) one end is tightly connected with the closure (17), and the other end is tightly connected with the valve rod (14), The bellows (16), the valve rod (14) and the closure (17) encircling space are the interim liquid storage cylinder (15)；It is described The opposite side of the corresponding seal receptacle (3) of closure (17) is provided with the clamping sleeve (13) for compressing the closure (17), Surrounded between the clamping sleeve (13) and the bellows (16) and form intermediate cavity (31), the intermediate sleeve (31) and the sealing The cooperation position between cooperation position and the seal receptacle (3) and the valve sleeve (11) between lid (17) offers company Lead to the sump pit (18) of the intermediate cavity (31) and the hydrops groove (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710795634.4A CN107387783A (en) | 2017-09-06 | 2017-09-06 | A kind of stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710795634.4A CN107387783A (en) | 2017-09-06 | 2017-09-06 | A kind of stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107387783A true CN107387783A (en) | 2017-11-24 |
Family
ID=60351789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710795634.4A Withdrawn CN107387783A (en) | 2017-09-06 | 2017-09-06 | A kind of stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107387783A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111376381A (en) * | 2019-11-19 | 2020-07-07 | 横店集团东磁股份有限公司 | Slurry stop valve for permanent magnetic ferrite wet forming |
| WO2022217757A1 (en) * | 2021-04-16 | 2022-10-20 | 多立恒（北京）能源技术股份公司 | Valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4526341A (en) * | 1983-06-15 | 1985-07-02 | Kerotest Manufacturing Corp. | Pneumatic shut-off valve |
| US5058861A (en) * | 1990-02-26 | 1991-10-22 | Baumann Hans D | Bellows seal and method for assembling |
| RU2219411C1 (en) * | 2002-05-06 | 2003-12-20 | Общество с ограниченной ответственностью "Научно-промышленная компания сильфонная техника" | Nonreturn-shutoff or shutoff valve |
| RU46326U1 (en) * | 2004-12-15 | 2005-06-27 | Открытое акционерное общество "Татнефть" имени В.Д. Шашина | DIRECT LOCKING VALVE |
| CN201314386Y (en) * | 2008-11-26 | 2009-09-23 | 永嘉县正旭阀门有限公司 | Throttle stop venting valve |
| CN101655159A (en) * | 2009-09-10 | 2010-02-24 | 方建生 | Full-seal zero-leakage stop valve |
| CN102853087A (en) * | 2012-07-25 | 2013-01-02 | 盐城市中液液压件有限公司 | Pressure balancing high-pressure stop valve |
| CN202674331U (en) * | 2012-07-23 | 2013-01-16 | 开维喜阀门集团有限公司 | Pressurizing stop valve |
| CN207514246U (en) * | 2017-09-06 | 2018-06-19 | 苏州良阀阀门有限公司 | A kind of shut-off valve |
-
2017
- 2017-09-06 CN CN201710795634.4A patent/CN107387783A/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4526341A (en) * | 1983-06-15 | 1985-07-02 | Kerotest Manufacturing Corp. | Pneumatic shut-off valve |
| US5058861A (en) * | 1990-02-26 | 1991-10-22 | Baumann Hans D | Bellows seal and method for assembling |
| RU2219411C1 (en) * | 2002-05-06 | 2003-12-20 | Общество с ограниченной ответственностью "Научно-промышленная компания сильфонная техника" | Nonreturn-shutoff or shutoff valve |
| RU46326U1 (en) * | 2004-12-15 | 2005-06-27 | Открытое акционерное общество "Татнефть" имени В.Д. Шашина | DIRECT LOCKING VALVE |
| CN201314386Y (en) * | 2008-11-26 | 2009-09-23 | 永嘉县正旭阀门有限公司 | Throttle stop venting valve |
| CN101655159A (en) * | 2009-09-10 | 2010-02-24 | 方建生 | Full-seal zero-leakage stop valve |
| CN202674331U (en) * | 2012-07-23 | 2013-01-16 | 开维喜阀门集团有限公司 | Pressurizing stop valve |
| CN102853087A (en) * | 2012-07-25 | 2013-01-02 | 盐城市中液液压件有限公司 | Pressure balancing high-pressure stop valve |
| CN207514246U (en) * | 2017-09-06 | 2018-06-19 | 苏州良阀阀门有限公司 | A kind of shut-off valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111376381A (en) * | 2019-11-19 | 2020-07-07 | 横店集团东磁股份有限公司 | Slurry stop valve for permanent magnetic ferrite wet forming |
| WO2022217757A1 (en) * | 2021-04-16 | 2022-10-20 | 多立恒（北京）能源技术股份公司 | Valve |
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Application publication date: 20171124 |
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