CN108506503A - Core shut-off valve - Google Patents
Core shut-off valve Download PDFInfo
- Publication number
- CN108506503A CN108506503A CN201810307148.8A CN201810307148A CN108506503A CN 108506503 A CN108506503 A CN 108506503A CN 201810307148 A CN201810307148 A CN 201810307148A CN 108506503 A CN108506503 A CN 108506503A
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- China
- Prior art keywords
- valve
- spring
- groove
- valve rod
- catheter
- 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
- 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
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
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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
Abstract
The present invention provides a seed nucleus shut-off valve, including：Valve body, flap, valve rod, valve deck and handwheel, by the protrusion that a loop configuration is arranged on the surface of the valve deck and valve body cooperation, the first groove is set on the valve body and the valve deck mating surface, the protrusion is fastened in first groove, the case where radiant matter is revealed in pipeline is avoided；Simultaneously, the first seal groove is set on the mutually matched face of protrusion in first groove, the second seal groove is set on the ring flange mutual cooperation face of the valve body and the valve deck, O-shaped sealing structure circle is set in first seal groove and the second seal groove, it avoids the fitting surface between the valve deck and valve body from gap occur and leads to the leakage of radiant matter, by the way that two groups of sealing rings are arranged, it can guarantee that sealing effect can be ensured by also having one group after one group of sealing ring failure, improve the safety of core shut-off valve, it avoids revealing the generation to cause a serious accident because of radiant matter.
Description
Technical field
The present invention relates to valve technology fields, and in particular to a seed nucleus shut-off valve.
Background technology
The whole world faces the energy and lacks problem, and China is in industrialization, urbanization process in addition, will also to energy demand
Continue to increase, energy supply and demand contradiction day shows and highlights.Nuclear power is universally acknowledged clean energy resource, and along with the hair of nuclear power technology
Exhibition, safety and the economy of nuclear power are promoted, and China also increases nuclear power dynamics of investment, and Development Stratagem Of Nuclear Power is by " appropriateness
Development " is adjusted to " actively development ".With the fast development of nuclear power industry, the demand size of nuclear power valve will constantly expand.Core
Electricity will produce a large amount of radiant matters when working and running, and radiant matter can be collected with pipeline to radiant matter process points
Middle processing, and during pipeline transportation, if revealing occurs in valve, it will cause serious accidents.
Invention content
The technical problem to be solved in the present invention is that considerable safety can be caused by overcoming valve in the prior art leakage occur
The defect of accident.
For this purpose, the present invention provides a seed nucleus shut-off valve, including：Valve body, flap, valve rod, valve deck and handwheel, the valve
Ontology is set as three-way pipe, and the three-way pipe includes input end, outlet end and valve end, wherein the input end is close to the valve
Inner wall top, the outlet end at end are equipped with baffle below the inner wall of the valve end, and the end of each baffle is equal
Equipped with a transverse fold, the top surface of each transverse fold is set as same level, and medium flow field is equipped between the transverse fold
Logical gap, the opening portion center of valve end described in the face of the flow of media gap,
The opening portion of the valve end is equipped with a valve deck, and the valve deck and the opening portion of the valve end of the valve body are removable
Connection is unloaded,
The top of the valve deck is equipped with handwheel, and the valve deck is internally provided with a valve rod, and the handwheel is solid with the valve rod
Fixed connection, and the inner wall of the valve rod and the valve deck, by the up and down setting of screw-thread fit, the valve rod is far from described
One end of handwheel is equipped with flap, and the flap supplies the flow of media gap between the transverse fold to open or close.
The medium that the shut-off valve flows through has the possibility of radiant matter, in order to avoid the valve deck and the valve body connect
The place of connecing occur it is poorly sealed and the case where cause radiant matter to be revealed, be the bottom of the valve deck as preferred technical solution
Protrusion equipped with a loop configuration, the top inner wall open end of the valve end are equipped with the first groove of a loop configuration, and described the
One groove cooperates with the protrusion to be arranged；
Wherein, the groove bottom of first groove is equipped with a first recessed seal groove,
The valve end and the top of the valve deck extend outwardly equipped with ring flange, at the top of the ring flange of the valve end
Equipped with a second recessed seal groove, first seal groove and second seal groove are set as loop configuration,
The sealing ring of O-shaped structure is equipped in first seal groove and second seal groove.
The medium that the shut-off valve flows through has the possibility of radiant matter, in order to avoid the valve deck and the valve body connect
The place of connecing occur it is poorly sealed and the case where cause radiant matter to be revealed, meanwhile, to avoid going out during the valve rod is up and down
The case where existing radiant matter leakage, being further used as preferred technical solution is, a cone tank is equipped with below the valve deck, described
The notch of cone tank is towards the bottom of the valve deck, and the valve rod passes through the center of the cone tank,
The top of the cone tank is equipped with a seal cavity, and the seal cavity and the groove top portion of the cone tank are equipped with one
Circular hole, the circular hole is up and down for the valve rod, free gap is equipped between the circular hole and the valve rod, between the activity
Gap has from top to bottom been sequentially filled pressing sleeve and filler；
The top of the seal cavity is equipped with threaded openings, and the top of the valve rod is equipped with the threaded openings,
The outside of the seal cavity is equipped with a drainage tube, and the drainage tube is connected to setting, and institute with the seal cavity
State one end connection shunt conduit of the drainage tube far from the seal cavity.
When the medium temperature in the valve body is excessively high and flow velocity is excessive, the valve body and connection valve can be made
The pipeline of ontology inlet end and an outlet end causes excessive shock power, can all cause to be lost to the valve body and pipeline, simultaneously
It is also possible to the minor valve in the pipeline that destroys by rush of water, causes to be lost, as preferred to avoid velocity of medium excessive to valve body and pipeline
Technical solution be that the bottom of the valve rod is equipped with the second groove, and the first spring, first bullet are equipped in second groove
The one end of spring far from second groove body is equipped with limiting block；Second spring, the second spring are arranged in first spring
Bottom spring wire end connect setting with the bottom spring wire end of first spring,
First spring and second spring are set as golden cadmium alloy structure.
To ensure that first spring and the second spring can preferably adjust the size of rate-of flow, as preferred
Technical solution be that the inside of first spring and second spring is set as cavity, and first spring and second spring
Internal cavities be set as being connected to,
The first catheter and the second catheter, one end of first catheter and first bullet are equipped in the valve rod
The top end part connection setting of spring, one end of second catheter is connected to setting with the top end part of the second spring；
First catheter and the second catheter are extended from bottom to top by the lower end of the valve rod, and described first leads
Liquid pipe and the second catheter extend at the seal cavity of the valve deck；
It is equipped with the first hose and the second hose in the drainage tube, institute is run through in one end of first hose and the second hose
State the lateral wall of valve rod, the other end runs through the inner wall of the drainage tube, extends to the outside of the drainage tube, and described first soft
Pipe and the second hose elongated end are far from the valve deck；
First hose is connected to setting with first catheter through one end of the valve rod, and second hose passes through
The one end for wearing the valve rod is connected to setting with second catheter.
When in order to ensure that the valve rod is up and down, radiant matter is not easy to leak to the seal chamber out of described valve body
In vivo, it is that the valve stem sleeve is equipped with bellows, and one end of the bellows connects the flap as preferred technical solution
Top surface, the other end of the bellows connect the bottom of the cone tank.
When in order to ensure that the valve rod is up and down, radiant matter is not easy to leak to the seal chamber out of described valve body
In vivo, it is that third spring is equipped between the top of the seal cavity and the pressing sleeve as preferred technical solution, described the
Three springs are set on the valve rod, and are additionally provided with sealing plate at the top of the third spring.
Technical solution of the present invention has the following advantages that：
By the way that the protrusion of a loop configuration is arranged on the surface of the valve deck and valve body cooperation, in the valve body
The first groove is set in the valve deck mating surface, the protrusion is fastened in first groove, avoids radiation in pipeline
The case where substance is revealed；Meanwhile the first seal groove is set on the mutually matched face of protrusion in first groove,
The second seal groove is set on the ring flange mutual cooperation face of the valve body and the valve deck, in first seal groove and second
The O-shaped sealing structure circle of setting, avoids the fitting surface between the valve deck and valve body from gap occur and cause to radiate in seal groove
The leakage of substance, by the way that two groups of sealing rings are arranged, it is ensured that sealing effect can be ensured by also having one group after one group of sealing ring failure,
The safety for improving core shut-off valve avoids revealing the generation to cause a serious accident because of radiant matter.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is the cross-sectional view of seed nucleus shut-off valve provided by the invention；
Fig. 2 is the drainage tube structural schematic diagram of seed nucleus shut-off valve provided by the invention；
Fig. 3 is the catheter structure schematic diagram of seed nucleus shut-off valve provided by the invention；
Fig. 4 is the first spring and second spring structural schematic diagram of seed nucleus shut-off valve provided by the invention；
Fig. 5 is the third spring structure schematic diagram of seed nucleus shut-off valve provided by the invention；
Wherein, 1- valve bodies, 2- flaps, 3- valve rods, 4- valve decks, 5- handwheels, 6- input ends, the outlet ends 7-, 8- valve ends,
9- baffles, 10- transverse folds, 11- protrusions, the first grooves of 12-, the first seal grooves of 13-, 14- ring flanges, the second seal grooves of 15-,
16- cone tanks, 17- seal cavities, 18- pressing sleeves, 19- fillers, 20- drainage tubes, 21- shunt conduits, the second grooves of 22-, 23-
One spring, 24- limiting blocks, 25- second springs, 26- catheters, 27- hoses, 28- bellowss, 29- top plates, 30- third springs.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for description purposes only, and is not understood to indicate or imply relative importance.In addition, invention described below
Involved technical characteristic can be combined with each other as long as they do not conflict with each other in different embodiments.
Embodiment 1
According to Fig. 1, a seed nucleus shut-off valve, including：Valve body 1, flap 2, valve rod 3, valve deck 4 and handwheel 5, it is described
Valve body 1 is set as three-way pipe, and the three-way pipe includes input end 6, outlet end 7 and valve end 8, wherein the input end 6 is close
Inner wall top, the outlet end 7 of the valve end 8 are equipped with baffle 9 below the inner wall of the valve end 8, each described
The end of baffle 9 is equipped with a transverse fold 10, and the top surface of each transverse fold 10 is set as same level, the laterally folding
Flow of media gap is equipped between curved 10, the opening portion center of valve end 8 described in the face of the flow of media gap is described
The opening portion of valve end 8 is equipped with a valve deck 4, and the valve deck 4 and the opening portion of the valve end 8 of the valve body 1 are detachably connected,
The top of the valve deck 4 is equipped with handwheel 5, and the valve deck 4 is internally provided with a valve rod 3, and the handwheel 5 is fixed with the valve rod 3
Connection, and the inner wall of the valve rod 3 and the valve deck 4, by the up and down setting of screw-thread fit, the valve rod 3 is far from described
One end of handwheel 5 is equipped with flap 2, and the flap 2 is opened or closed for the flow of media gap between the transverse fold 10；Institute
Stating the medium that shut-off valve flows through has the possibility of radiant matter, in order to avoid the valve deck and valve body junction appearance are close
Feng Buyan and the case where cause radiant matter to be revealed, be that the bottom of the valve deck 4 is equipped with an annular as preferred technical solution
The protrusion 11 of structure, the top inner wall open end of the valve end 8 are equipped with the first groove 12 of a loop configuration, first groove
12 cooperate with described raised 11 is arranged；
Wherein, the groove bottom of first groove 12 is equipped with a first recessed seal groove 13,
The valve end 8 and the top of the valve deck 4 extend outwardly equipped with ring flange 14, the flange of the valve end 8
14 top of disk is equipped with a second recessed seal groove 15, and first seal groove 13 and second seal groove 15 are set as annular
Structure,
The sealing ring of O-shaped structure is equipped in first seal groove 13 and second seal groove 15.
The ring flange 5 is mutually assembled for the valve body 1 and valve deck 4 using bolt.
In use, being screwed by the handwheel 5, the screw thread and the spiral shell at the top of the valve deck for making 3 top of the valve rod
Line realizes rotation, up and down to make the valve rod 3 realize, when the valve rod 3 is movable upwards, the flap 2 is detached from described
The upper surface of transverse fold 10, you can open the flow of media gap, the medium of the input end 6 is made to flow to the outlet end
7；When the activity downwards of the valve rod 3, when the bottom surface of the flap 2 is fitted in the upper surface of the transverse fold 10, given an account of
Matter passage gaps can be closed, and be achieved in the control to flow of media.By matching in the valve deck 4 and the valve body 1
The protrusion 11 of a loop configuration is arranged in the surface of conjunction, and the first groove is arranged on the valve body 1 and 4 mating surface of the valve deck
12, described raised 11 are fastened in first groove 12, the case where radiant matter is revealed in pipeline is avoided；Meanwhile in institute
That states the first groove 12 is arranged the first seal groove 13 on the raised 11 mutually matched face, in the valve body 1 and described
Second seal groove 15 is set on the 14 mutual cooperation face of ring flange of valve deck 4, in first seal groove, 13 and second seal groove 15
The interior O-shaped sealing structure circle of setting, avoids the fitting surface between the valve deck 4 and valve body 1 from gap occur and lead to radiant matter
Leakage, pass through and two groups of sealing rings be set, it is ensured that sealing effect can be ensured by also having one group after the failure of one group of sealing ring, be improved
The safety of core shut-off valve avoids revealing the generation to cause a serious accident because of radiant matter.
The medium that the shut-off valve flows through has the possibility of radiant matter, in order to avoid the valve deck and the valve body connect
The place of connecing occur it is poorly sealed and the case where cause radiant matter to be revealed, meanwhile, to avoid going out during the valve rod is up and down
The case where existing radiant matter leakage, according to Fig. 1, Fig. 2 and Fig. 3, it is the valve deck to be further used as preferred technical solution
4 lower sections are equipped with a cone tank 16, and the notch of the cone tank 16 is towards the bottom of the valve deck 4, and the valve rod 3 is across described
The center of cone tank 16,
The top of the cone tank 16 is equipped with a seal cavity 17, the groove top of the seal cavity 17 and the cone tank 16
Portion is equipped with a circular hole, and the circular hole is up and down for the valve rod 3, and free gap is equipped between the circular hole and the valve rod 3,
The free gap has from top to bottom been sequentially filled pressing sleeve 18 and filler 19；
The top of the seal cavity 17 is equipped with threaded openings, and the top of the valve rod 3 is set with threaded openings cooperation
It sets,
The outside of the seal cavity 17 is equipped with a drainage tube 20, and the drainage tube 20 is connected to the seal cavity 17 and sets
It sets, and the one end of the drainage tube 20 far from the seal cavity 17 connects shunt conduit 21.
The top of the cone tank 16 is equipped with top plate 29, and 29 center of the top plate is equipped with one and is open, described in the opening confession
Valve rod 3 passes through, and the inner wall of the opening is equipped with screw thread, and the screw thread and the valve rod 3 cooperate, and the screw thread with
4 open-topped screw thread specification of the valve deck is consistent, i.e., the direction of the described screw thread, screw pitch are consistent with thread size.
In use, carrying out the filling of filler 19 above the top plate 29, then pressing sleeve 18 is pressed into the upper of the filler 19
Gap between the valve rod 3 and the top plate 29, is filled using the filler 19, radiant matter is avoided to pass through institute by side
State the gap leakage between top plate 19 and the valve rod 3.The filler 19 is set as soft graphite or polytetrafluoroethylene (PTFE).
After the sealing performance failure of the filler 19, radiant matter can be between the valve rod 3 and the top plate 29
Gap flow into the seal cavity 17, as the valve rod 3 is up and down, radiant matter can then be pushed up by the valve deck 4
Portion is leaked out with 3 threaded joints of the valve rod, and is caused a serious accident；Drawn by the way that one is arranged in the seal cavity 17
Flow tube 20 after flowing into a large amount of radiant matters in the seal cavity 17, can pass through after the sealing performance failure of the filler 19
The radiant matter that drainage tube 20 is revealed carries out water conservancy diversion, and the radiant matter revealed is passed through 20 water conservancy diversion of drainage tube to isocon
In road 21, and carry out the processing of next step.As a result, after the sealing performance of the filler 19 fails, it can also pass through drainage tube 20
The radiant matter leaked in the seal cavity 17 is drained in shunt conduit 21, radiant matter is avoided to reveal, avoids weight
The generation of big safety accident.
When the medium temperature in the valve body is excessively high and flow velocity is excessive, the valve body and connection valve can be made
The pipeline of ontology inlet end and an outlet end causes excessive shock power, can all cause to be lost to the valve body and pipeline, simultaneously
It is also possible to the minor valve in the pipeline that destroys by rush of water；When the excessive overheat of impact force of moment short time occurs in the source of medium fluid
When, the service life of pipeline and valve can also be impacted, and the instant impact of short time is then not easy to be found or grasped by people
Make, valve body and pipeline are caused to be lost to avoid velocity of medium excessive, are as preferred technical solution, according to Fig. 4 and Fig. 5
Shown, the bottom of the valve rod 3 is equipped with the second groove 22, is equipped with one first spring 23 in second groove 22, and described first
The one end of spring 23 far from second groove body is equipped with limiting block 24；Second spring 25, institute are arranged in first spring 23
The bottom spring wire end for stating second spring 25 connect setting with the bottom spring wire end of first spring 23, and described first
Spring 23 and second spring 25 are set as golden cadmium alloy structure.
First spring 23 and second spring 25 are set as golden cadmium alloy (Au-Cd), and the gold cadmium alloy (Au-Cd) is
Alloying metal with double-pass memory effect.When being that medium temperature is excessively high in the valve body 1, first spring 23 and
Two springs 25 are i.e. scalable, and the limiting block 24 is left described while first spring 23 and second spring 25 stretch
Second groove 22 of 2 lower section of flap, falls into the opening in the flow of media gap, thus can be by the flow of media gap
Opening becomes smaller, and avoids the medium temperature of the valve body 1 excessively high, to next stage pipeline valve generate cause thermal damage the case where.Simultaneously
Avoid pipeline internal medium flow velocity excessive the case where greater impact power is caused to valve and pipeline, pipeline is made to damage.Pass through profit
With Memory Alloy metal, when the temperature in the valve body 1 reaches the deformation temperature of the Memory Alloy metal, the memory
Alloying metal is opened, and the limiting block 24 moves down, then the opening in the flow of media gap can become smaller, to play
Metering function；When the medium temperature in the valve body 1 is less than high temperature deformation temperature, first spring 23 and second spring
25 compression recoveries, the limiting block 24 return in the second groove 22.
The core is used primarily in shut-off valve on auxiliary line, and medium is the water and steam of medium parameter, and pipeline nominal is logical
Diameter is 350mm, and the wire diameter of first spring and second spring can be set as 10mm~20mm.
To ensure that first spring and the second spring can preferably adjust the size of rate-of flow, according to fig. 3
Shown in Fig. 4, as preferred technical solution it is that the inside of first spring 23 and second spring 25 is set as cavity, and
First spring 23 is set as being connected to the internal cavities of second spring 25,
The first catheter 26 and the second catheter 32, one end of first catheter 26 and institute are equipped in the valve rod 3
The top end part connection setting of the first spring 23 is stated, one end of second catheter 32 connects with the top end part of the second spring 25
Logical setting；
First catheter, 26 and second catheter 32 is extended from bottom to top by the lower end of the valve rod 3, described
First catheter 26 and the second catheter 32 extend at the seal cavity 17 of the valve deck 4；
The first hose 27 and the second hose 31 are equipped in the drainage tube 20, first hose, 27 and second hose 31
The lateral wall of the valve rod 3 is run through in one end, and the other end runs through the inner wall of the drainage tube 20, extends to the outer of the drainage tube 20
Side, and 27 and second hose of the first hose, 31 elongated end is far from the valve deck 4；
First hose 27 is connected to setting with first catheter 26 through one end of the valve rod 3, and described second
Hose 31 is connected to setting through one end of the valve rod 3 with second catheter 32.
First hose 27 is inlet tube, and second hose 31 is outlet tube.
When not needing current limliting under high-temperature medium, coolant media, the coolant media are injected using first hose 27
The first catheter 26 is flowed into through first hose 27, then is flowed into the cavity of the first spring 23 through catheter 26, then through second
The cavity of spring 25 flows into the second catheter 32, and second hose 31 is flowed out to through the second catheter 32.It is achieved in refrigerant
The cycle of medium, you can cool down to first spring 23 and second spring 25, avoid first spring 23 and second
Spring 25 is the high-temperature medium and current limliting in the case of be not required to current limliting the problem of.Ensure that high-temperature medium can be quickly through the valve sheet
Body 1.
When carrying out rate-of flow adjusting under cryogenic media, hot water or hot steam etc. are injected using first hose 27
Medium, the media such as the hot water or hot steam flow into the first catheter 26 through first hose 27, then are flowed into through catheter 26
Cavity in the cavity of first spring 23, then through second spring 25 flows into the second catheter 32, is flowed out to through the second catheter 32
Second hose 31.It is achieved in the reciprocation cycle of the media such as hot water or hot steam, you can to first spring 23 and
Two springs 25 are heated, when first spring 23 and the temperature of the arrival thermal deformation of second spring 25, first spring
23 and second spring 25 can automatically spring open, and drive limiting block 24 downwards activity, current limliting under low-temperature condition thus can be realized
Effect.
When in order to ensure that the valve rod is up and down, radiant matter is not easy to leak to the seal chamber out of described valve body
In vivo, according to Fig.5, it is that the valve rod 3 is arranged with bellows 28, the bellows 28 as preferred technical solution
One end connects the top surface of the flap 2, and the other end of the bellows 28 connects the bottom of the cone tank 16.Pass through setting
Bellows 28, when the valve rod 3 is up and down, 28 moment of the bellows is tightly attached to the top of the cone tank 16 and the valve
The upper surface of valve 2 can avoid the radiant matter in the valve body 1 by between the activity between the valve rod 3 and the top plate 29
Gap is revealed.
Third spring 30 is equipped between the top of the seal cavity 17 and the pressing sleeve 18, the third spring 30 is arranged
On the valve rod 3, and the top of the third spring 30 is additionally provided with sealing plate, is withstood by the third spring 30 of setting described
Sealing plate, during the valve rod 3 is up and down, the sealing plate withstands on the valve rod 3 by 30 moment of third spring
With the open end of the valve deck 4, radiating object is avoided thus to reveal.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.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 variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (6)
1. a seed nucleus shut-off valve, which is characterized in that including：Valve body (1), flap (2), valve rod (3), valve deck (4) and handwheel
(5), the valve body (1) is set as three-way pipe, and the three-way pipe includes input end (6), outlet end (7) and valve end (8), wherein
The input end (6) is above the inner wall of the valve end (8), the inner wall of the outlet end (7) close described valve end (8)
Lower section is equipped with baffle (9), and the end of each baffle (9) is equipped with a transverse fold (10), each transverse fold (10)
Top surface be set as same level, flow of media gap is equipped between the transverse fold (10), the flow of media gap is just
To the opening portion center of the valve end (8),
The opening portion of the valve end (8) is equipped with a valve deck (4), the valve end (8) of the valve deck (4) and the valve body (1)
Opening portion be detachably connected,
The top of the valve deck (4) is equipped with handwheel (5), and the valve deck (4) is internally provided with a valve rod (3), the handwheel (5) with
The valve rod (3) is fixedly connected, and the valve rod (3) and the inner wall of the valve deck (4) are set by the up and down of screw-thread fit
It sets, the one end of the valve rod (3) far from the handwheel (5) is equipped with flap (2), and the flap (2) is for the transverse fold (10)
Between flow of media gap open or close；
The bottom of the valve deck (4) is equipped with the protrusion (11) of a loop configuration, and the top inner wall open end of the valve end (8) is equipped with
The first groove (12) of one loop configuration, first groove (12) cooperates with described raised (11) to be arranged；
Wherein, the groove bottom of first groove (12) is equipped with recessed first seal groove (13),
The valve end (8) and the top of the valve deck (4) extend outwardly equipped with ring flange (14), the valve end (8)
Recessed second seal groove (15), first seal groove (13) and second seal groove are equipped at the top of ring flange (14)
(15) it is set as loop configuration,
The sealing ring of O-shaped structure is equipped in first seal groove (13) and second seal groove (15).
2. seed nucleus shut-off valve according to claim 1, which is characterized in that be equipped with a taper below the valve deck (4)
Slot (16), the notch of the cone tank (16) is towards the bottom of the valve deck (4), and the valve rod (3) passes through the cone tank
(16) center,
The top of the cone tank (16) is equipped with a seal cavity (17), the seal cavity (17) and the cone tank (16)
Groove top portion is equipped with a circular hole, and the circular hole is up and down for the valve rod (3), is equipped between the circular hole and the valve rod (3)
Free gap, the free gap have from top to bottom been sequentially filled pressing sleeve (18) and filler (19)；
The top of the seal cavity (17) is equipped with threaded openings, and top and the threaded openings cooperation of the valve rod (3) are set
It sets,
The outside of the seal cavity (17) is equipped with a drainage tube (20), and the drainage tube (20) connects with the seal cavity (17)
Logical setting, and one end connection shunt conduit (21) of the drainage tube (20) far from the seal cavity (17).
3. seed nucleus shut-off valve according to claim 2, which is characterized in that the bottom of the valve rod (3) is equipped with second
Groove (22), second groove (22) is interior to be equipped with one first spring (23), and first spring (23) is far from second slot
One end of body is equipped with limiting block (24)；It is arranged with second spring (25), the second spring (25) in first spring (23)
Bottom spring wire end connect setting with the bottom spring wire end of first spring (23),
First spring (23) and second spring (25) are set as golden cadmium alloy structure.
4. seed nucleus shut-off valve according to claim 3, which is characterized in that first spring (23) and second spring
(25) inside is set as cavity, and first spring (23) is set as being connected to the internal cavities of second spring (25),
The first catheter (26) and the second catheter (32), one end of first catheter (26) are equipped in the valve rod (3)
Setting, one end and the second spring (25) of second catheter (32) are connected to the top end part of first spring (23)
Top end part connection setting；
First catheter (26) and the second catheter (32) are extended from bottom to top by the lower end of the valve rod (3), institute
It states the first catheter (26) and the second catheter (32) extends at the seal cavity (17) of the valve deck (4)；
The first hose (27) and the second hose (31), first hose (27) and the second hose are equipped in the drainage tube (20)
(31) lateral wall of the valve rod (3) is run through in one end, and the other end runs through the inner wall of the drainage tube (20), extends to described draw
The outside of flow tube (20), and first hose (27) and the second hose (31) elongated end are far from the valve deck (4)；
First hose (27) is connected to setting with first catheter (26) through one end of the valve rod (3), and described the
Two hoses (31) are connected to setting through one end of the valve rod (3) with second catheter (32).
5. seed nucleus shut-off valve according to claim 2, which is characterized in that the valve rod (3) is arranged with bellows
(28), one end of the bellows (28) connects the top surface of the flap (2), described in the other end connection of the bellows (28)
The bottom of cone tank (16).
6. seed nucleus shut-off valve according to claim 2, which is characterized in that the top of the seal cavity (17) and institute
It states and is equipped with third spring (30) between pressing sleeve (18), (30 are set on the valve rod (3) the third spring, and the third
Spring is additionally provided with sealing plate at the top of (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810307148.8A CN108506503B (en) | 2018-04-08 | 2018-04-08 | Core shut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810307148.8A CN108506503B (en) | 2018-04-08 | 2018-04-08 | Core shut-off valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108506503A true CN108506503A (en) | 2018-09-07 |
| CN108506503B CN108506503B (en) | 2019-02-22 |
Family
ID=63381111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810307148.8A Active CN108506503B (en) | 2018-04-08 | 2018-04-08 | Core shut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108506503B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667938A (en) * | 2019-02-17 | 2019-04-23 | 吴小戈 | A kind of shut-off valve |
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| CN1310305A (en) * | 2000-01-21 | 2001-08-29 | 昭和电工株式会社 | Halogen corrosive gas valve and its producing method |
| KR20130109582A (en) * | 2012-03-28 | 2013-10-08 | 제노스주식회사 | Angle valve |
| CN104048050A (en) * | 2013-03-13 | 2014-09-17 | 苏州科迪流体控制设备有限公司 | Low-flow-resistance drain valve |
| CN205534290U (en) * | 2016-04-19 | 2016-08-31 | 山东益都阀门集团股份有限公司 | Reveal stop valve a little |
| CN102927301B (en) * | 2011-12-08 | 2016-12-21 | 邹岳明 | Two-way shut-off valve |
| CN106763833A (en) * | 2017-01-22 | 2017-05-31 | 江苏金晟元特种阀门股份有限公司 | Special valve for special chlorine |
| CN107327581A (en) * | 2017-07-25 | 2017-11-07 | 江苏星河阀门有限公司 | A kind of nuclear power bellows instrument valve |
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2018
- 2018-04-08 CN CN201810307148.8A patent/CN108506503B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1310305A (en) * | 2000-01-21 | 2001-08-29 | 昭和电工株式会社 | Halogen corrosive gas valve and its producing method |
| CN102927301B (en) * | 2011-12-08 | 2016-12-21 | 邹岳明 | Two-way shut-off valve |
| KR20130109582A (en) * | 2012-03-28 | 2013-10-08 | 제노스주식회사 | Angle valve |
| CN104048050A (en) * | 2013-03-13 | 2014-09-17 | 苏州科迪流体控制设备有限公司 | Low-flow-resistance drain valve |
| CN205534290U (en) * | 2016-04-19 | 2016-08-31 | 山东益都阀门集团股份有限公司 | Reveal stop valve a little |
| CN106763833A (en) * | 2017-01-22 | 2017-05-31 | 江苏金晟元特种阀门股份有限公司 | Special valve for special chlorine |
| CN107327581A (en) * | 2017-07-25 | 2017-11-07 | 江苏星河阀门有限公司 | A kind of nuclear power bellows instrument valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667938A (en) * | 2019-02-17 | 2019-04-23 | 吴小戈 | A kind of shut-off valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108506503B (en) | 2019-02-22 |
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