CN109538819A - A kind of bellows component and a kind of valve - Google Patents
A kind of bellows component and a kind of valve Download PDFInfo
- Publication number
- CN109538819A CN109538819A CN201811612851.6A CN201811612851A CN109538819A CN 109538819 A CN109538819 A CN 109538819A CN 201811612851 A CN201811612851 A CN 201811612851A CN 109538819 A CN109538819 A CN 109538819A
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- China
- Prior art keywords
- valve
- bellows
- boss
- fixed part
- connector
- Prior art date
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- Pending
Links
- 230000004888 barrier function Effects 0.000 claims abstract description 34
- 239000012530 fluid Substances 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims description 43
- 238000003466 welding Methods 0.000 claims description 32
- 230000002093 peripheral effect Effects 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 239000006185 dispersion Substances 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 9
- 238000005336 cracking Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 230000004308 accommodation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- 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
Abstract
The present invention discloses a kind of bellows component and a kind of valve, and wherein bellows component includes bellows；Casing is sheathed on outside the bellows, and is fixedly connected far from the axially external of valve body by fixed part on the bellows；And barrier assembly, it is set between the bellows and described sleeve pipe, is at least partially disposed at the axially inner side of the fixed part, the barrier assembly avoids the fluid in valve from directly acting on the fixed part.By the axially inner side in fixed part, barrier assembly is set, fluid in valve first acts on barrier assembly, avoid fixed part directly by the effect of fluid, and by the dispersion of barrier assembly and reduce the Fluid pressure for acting on fixed part, prevent fixed part crack so that leakage the case where appearance, to extend the service life of bellows component.
Description
Technical field
The present invention relates to valve technology fields, and in particular to a kind of bellows component and a kind of valve.
Background technique
Most of sealing elements are bellows component in valve, since bellows is passed through by seamless or longitudinal measure pipeline
Mechanical system moulds molding, it not only to static displacement, dynamic mobile, thermal expansion and the vibration in pipe-line system play absorption and
Compensating action, and liquid or gas can be transmitted under high pressure or under vacuum state, so that the sealing effect of bellows
The significantly larger than sealing effect of filler.
Valve in the prior art includes: valve body, and valve body horizontal direction is equipped with inlet and outlet, upper opening, and passes through spiral shell
Bolt is fixedly connected with valve deck, and the top of valve deck is connected by screw thread with valve rod, and stem bottom is equipped with connecting pin, is fixed on connecting pin
Spool, valve is closing and sealing off when bottom and valve body sealing surface (overlay cladding) contact, valve opening when separation, flow of media, valve
Bar rotation can move along a straight line with movable valve plug；Outside valve rod, upper end is fixed on corrugated header bellows-sheathed by the first welding ends,
Lower end is fixed on spool bottom by the second welding ends, and corrugated header is located at the inside of valve deck.
But above-mentioned bellows in the prior art and casing are directly fixedly welded in the radially facing surface of the two,
When the Fluid pressure of valve internal and valve opening, valve deck can directly act on wave by bellows to the pressure of bellows
On the first welding ends between line pipe and corrugated header, i.e., valve inner fluid can directly apply axial work to the first welding ends
Firmly, the first welding ends can be frequently by the active force of fluid, so as to cause the first welding ends in the operation of frequent valve opening and closing
Cracking thus leak fluid and can not seal, reduce the service life of bellows component.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that overcoming the weldering of the bellows component in valve in the prior art
The place of connecing causes sealing effect to become easily because the pressure etc. by fluid causes bellows directly to act on, so as to cause weld cracking
The defect of difference, to provide a kind of bellows component and a kind of valve.
A kind of bellows component, comprising:
Bellows；
Casing is sheathed on outside the bellows, and passes through fixed part far from the axially external of valve body on the bellows
It is fixedly connected；
And barrier assembly, it is set between the bellows and described sleeve pipe, is at least partially disposed at the axis of the fixed part
Inwardly, the barrier assembly avoids the fluid in valve from directly acting on the fixed part.
Further, the bellows it is described it is axially external be fixed with the first connector, first connector passes through
The fixed part is fixedly connected with described sleeve pipe.
Further, the fixed part includes welding point.
Further, the fixed part further includes the appearance of the fixed connection place in described sleeve pipe and/or the first connector
Receive the accommodating chamber of the welding point.
Further, the barrier assembly includes that the radially outside on the first connector outer peripheral surface extends
First boss, and set on the described sleeve pipe inner peripheral surface second boss that radially inside extends, the first boss and institute
Second boss is stated mutually axially to abut.
Further, the first boss is set to the axially inner side of the second boss, and the accommodating chamber includes described the
The space that the shaft end outer chamfer of the shaft end inner chamfer of two boss and/or first connector is formed.
Further, the barrier assembly be set on described sleeve pipe inner peripheral surface radially inside extend second boss,
The second boss is connected to the axial end portion of first connector, and the fixed part is fixedly connected with the second boss and institute
State the axial end portion of the first connector.
Further, the end of described sleeve pipe not connecting with the bellows is equipped with the sealing being fixedly connected on valve
Fixed part.
A kind of valve, comprising:
Valve body；
Valve deck is removably connected to the valve body；
Valve rod, be sequentially connected exterior operator and be located at the intracorporal spool of the valve；
And a kind of such as above-mentioned bellows component, wherein the bellows-sheathed sets and is fixed on the valve rod, it is described
The seal holder part of casing is fixedly connected between the valve deck and the valve body.
Further, there are being installed on for the first gap is described for the first connector of the bellows and the valve deck inner wall
In valve deck.
Further, the seal holder part includes the convex annular that radially outside extends on described sleeve pipe outer peripheral surface
Platform, the axial sides of the annular convex platform are connect with the valve deck and the valve seal respectively.
Further, the seal holder part further includes a pair being respectively arranged on the axial end face of the annular convex platform two sides
First sealing and a pair of second sealing.
Further, first sealing includes the annular groove set on the annular convex platform axial end face, and installation
Gasket in the annular groove；Second sealing is that the annular convex platform is contacted with the metal of the valve body or valve deck
Face.
Further, the annular groove and the gasket are set to the radial outside of the metal contact surface.
Technical solution of the present invention has the advantages that
1. a kind of bellows component provided by the invention, comprising: bellows；Casing is sheathed on outside the bellows, and with
It is fixedly connected far from the axially external of valve body by fixed part on the bellows；And barrier assembly, it is set to the bellows
Between described sleeve pipe, it is at least partially disposed at the axially inner side of the fixed part, the barrier assembly avoids the fluid in valve
Directly act on the fixed part.A kind of bellows component of this structure is located at fixed part by least partly barrier assembly
Axially inner side, the fluid in valve first act on barrier assembly, avoid fixed part directly by the effect of fluid, and by stopping
The dispersion of component reduces the Fluid pressure for acting on fixed part, prevent fixed part crack so that leakage the case where appearance, thus
Extend the service life of bellows component.
2. a kind of bellows component provided by the invention, the fixed part include welding point.The fixed part further includes
The accommodating chamber of the receiving welding point of fixed connection place in described sleeve pipe and/or the first connector.The one of this structure
Kind bellows component accommodates welding point by setting accommodating chamber, avoids for welding point being directly arranged in larger by axial stress
Connection surface on, to increase the weld strength of welding point and fixed connection place and improve sealing effect.
3. a kind of bellows component provided by the invention, the barrier assembly includes being set to the first connector outer peripheral surface
On the first boss that radially outside extends, and set on described sleeve pipe inner peripheral surface radially inside extend it is second convex
Platform, the first boss are mutually axially abutted with the second boss.A kind of bellows component of this structure passes through setting first
Boss is mutually axially abutted with second boss, is convenient for quick positioning welding, and be located at welding point axial direction due to being provided with
The boss of inside, second boss can apply reaction force in first boss to stop the first connector of limitation towards axially external
Movement, avoiding valve, stress cracking failure causes the risk of leakage at welding point in switching process, is also prevented from the first company
When welding welding deformation occurs for fitting and casing, improves the service life of bellows component.
4. a kind of valve provided by the invention, comprising: valve body；Valve deck is removably connected to the valve body；Valve rod, transmission
It connects exterior operator and is located at the intracorporal spool of the valve；And a kind of such as above-mentioned bellows component, wherein the wave
Line pipe sleeve sets and is fixed on the valve rod, the seal holder part of described sleeve pipe be fixedly connected on the valve deck and the valve body it
Between.A kind of valve of this structure due to including a kind of above-mentioned bellows component, thus has naturally because including above-mentioned ripple
All advantages brought by tube assembly.
5. there are between first for a kind of valve provided by the invention, the first connector of the bellows and the valve deck inner wall
Gap is installed in the valve deck.A kind of valve of this structure, by having first the first connector of gap setting and valve deck inner wall,
Valve deck when bellows component expanded by heating is prevented to be applied on fixed part to the reaction force of the first connector and lead to fixed part
Cracking is so that the case where leaking occurs.
6. a kind of valve provided by the invention, the seal holder part includes radially outside on described sleeve pipe outer peripheral surface
The annular convex platform of extension, the axial sides of the annular convex platform are connect with the valve deck and the valve seal respectively.This structure
A kind of valve, convenient for installation site of the spacer dimple tube assembly in valve and installation, realized by the way that annular convex platform is arranged
Bellows component is detachably connected, replacement convenient for safeguarding；Simultaneously and the curved possibility of valve rod is reduced, reduces valve rod and fill out
The friction of material, to improve the sealing effect and service life of filler.
7. a kind of valve provided by the invention, the seal holder part further includes being respectively arranged on two side axle of annular convex platform
The first sealing of a pair and a pair of second sealing on end face.First sealing includes being set to the annular convex platform axis
To the annular groove of end face, and the gasket being installed in the annular groove；Second sealing be the annular convex platform with
The metal contact surface of the valve body or valve deck.A kind of valve of this structure, by the way that annular convex platform is arranged, thus to the first sealing
And second sealing positioning, be easily installed and control the decrement of the first sealing and prevent the first sealing by pressure dissipate pressure
It is bad；By the first sealing of setting include gasket and the second sealing is metal contact surface, realizes bellows component and valve
Soft seal and hard sealing between door, wherein the gasket in the soft seal of metal contact surface protection in hard sealing, to prolong
It has grown the service life of gasket and has improved the reliability of valve.
Detailed description of the invention
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 be briefly described, it should be apparent that, it is 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, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the local structural graph of the valve provided in the embodiment of the present invention 1；
Fig. 2 is the partial enlarged view of the first connector shown in FIG. 1, casing, barrier assembly and fixed part；
Fig. 3 be Fig. 1 in another embodiment in the first connector, casing, barrier assembly and fixed part part
Enlarged drawing；
Fig. 4 be Fig. 1 in another embodiment in the first connector, casing, barrier assembly and fixed part part
Enlarged drawing；
Fig. 5 be Fig. 1 in another embodiment in the first connector, casing, barrier assembly and fixed part part
Enlarged drawing；
Fig. 6 be Fig. 1 in another embodiment in the first connector, casing, barrier assembly and fixed part part
Enlarged drawing；
Fig. 7 is that the part of the first connector, casing, barrier assembly and the fixed part that provide in the embodiment of the present invention 2 is put
Big figure；
Fig. 8 be Fig. 7 in another embodiment in the first connector, casing, barrier assembly and fixed part part
Enlarged drawing；
Fig. 9 be Fig. 7 in another embodiment in the first connector, casing, barrier assembly and fixed part part
Enlarged drawing；
Description of symbols:
1- valve body；
2- valve deck；
3- valve rod；
41- bellows, the first connector of 411-, 4111- first boss, the first gap 412-, the second connector of 413-,
42- casing, 421- second boss, 422- annular convex platform, 4231- annular groove, 4232- gasket, the second gap 424-, 431- weldering
Connector, 432- accommodating chamber, the threaded connection place 433-；
5- accommodation space.
Specific embodiment
Technical solution 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
Personnel's every other embodiment 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 description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
As long as in addition, the non-structure each other of technical characteristic involved in invention described below different embodiments
It can be combined with each other at conflict.
Embodiment 1
The present embodiment provides a kind of valves, as shown in Figures 1 and 2 comprising: valve body 1, valve deck 2, valve rod 3 and ripple
Tube assembly.Wherein valve deck 2 is removably connected to valve body 1；Valve rod 3 is sequentially connected in exterior operator and spool；Bellows group
Part is set in the accommodation space 5 formed between valve deck 2 and valve body 1.It is located in valve deck 2 by the way that bellows 41 is arranged, is made full use of
The space of valve deck 2, reduces the height of valve body 1, and improves the operability of valve body 1 sealing surface weld deposit or valve seat welding.
As shown in Figure 1, the bellows component in the present embodiment includes: bellows 41, casing 42, barrier assembly and fixation
Portion.Wherein bellows 41 is arranged and is fixed on valve rod 3；Casing 42 is sheathed on outside bellows 41, and with it is separate on bellows 41
The axially external of valve body 1 is fixedly connected by fixed part, and casing 42 is fixedly connected between valve deck 2 and valve body 1；Blocking group
Part is set between bellows 41 and casing 42, is at least partially disposed at the axially inner side of fixed part, barrier assembly avoids in valve
Fluid directly acts on fixed part.It should be noted that the axially external upward direction referred in Fig. 1, axially inner side refer to Fig. 1
In in downward direction.
As shown in Fig. 2, the axially external of bellows 41 in the present embodiment is fixed with the first connector 411, the first connection
Part 411 is fixedly connected by fixed part with casing 42, and the first connector 411 of bellows 41 and 2 inner wall of valve deck have between first
Gap 412 is installed in valve deck 2；End positioned at the bellows 41 of axially inner side is equipped with the second connector 413, the second connector
413 are welded to connect on valve rod 3.
By having the first connector of the first gap 412 setting 411 and 2 inner wall of valve deck, bellows component expanded by heating is prevented
When valve deck 2 to the reaction force of the first connector 411 be applied on fixed part and cause fixed part crack so that leakage the case where
Occur.
As depicted in figs. 1 and 2, the barrier assembly in the present embodiment includes the edge on 411 outer peripheral surface of the first connector
The first boss 4111 that its radial outside extends, and set on 42 inner peripheral surface of the casing second boss that radially inside extends
421, first boss 4111 is mutually axially abutted with second boss 421.It should be noted that radial outside refers to level in Fig. 1
Direction far from valve rod 3, radially inner side refer to the horizontal direction close to valve rod 3 in Fig. 1.
It is mutually axially abutted by setting first boss 4111 with second boss 421, and is connect due to being provided with to be located at
The boss of first 431 axially inner side, second boss 421 can apply reaction force in first boss 4111 with stop limitation first connect
Fitting 411 is towards axially external movement, and avoiding valve, stress cracking failure causes to let out at welding point 431 in switching process
The risk of dew is also prevented from when the first connector 411 is welded with casing 42 and welding deformation occurs, improves the use of bellows component
Service life.
As shown in Fig. 2, the fixed part in the present embodiment include welding point 431 and be set to casing 42 and the first connector
The accommodating chamber 432 of the receiving welding point 431 of fixed connection place on 411.Specifically, axially external first boss 4111
Set on the axially inner side of axially external second boss 421, by the shaft end inner chamfer and the first connector of second boss 421
411 shaft end outer chamfer collectively forms accommodating chamber 432.Certainly, accommodating chamber 432 can also be arranged to the shape illustrated in other non-figures
Shape.
As a kind of interchangeable embodiment, with specific reference to shown in Fig. 3, by second boss 421 shaft end inner chamfer and
The shaft end outer peripheral surface of first connector 411 collectively forms accommodating chamber 432.Certainly, accommodating chamber 432 can also be arranged to other non-figures
The shape of middle signal.
As a kind of interchangeable embodiment, referring to shown in Fig. 4, by the shaft end inner peripheral surface of second boss 421 and first
The shaft end outer chamfer of connector 411 collectively forms accommodating chamber 432.Certainly, accommodating chamber 432 can also be arranged to show in other non-figures
The shape of meaning.
As a kind of interchangeable embodiment, with specific reference to shown in Fig. 5, second boss 421 is located at the interior of radially inner side
Circumferential surface is to be threadedly coupled with the outer peripheral surface that the first connector 411 is located at radial outside, that is, is equipped with threaded connection place as shown in Figure 5
433.It should be noted that settable first connector 411 of Fig. 3 to Fig. 9 is threadedly connected to second boss 421 or casing 42.
As a kind of interchangeable embodiment, refering to what is shown in Fig. 6, second boss 421 is additionally provided with and the first connector 411
The cooperation of shaft end outer chamfer diameter inner bevel, diameter inner bevel mutually axially abuts with shaft end outer chamfer.
Welding point 431 is accommodated by setting accommodating chamber 432, avoids for welding point 431 being directly arranged in by axial stress
In biggish connection surface, to increase the weld strength of welding point 431 and fixed connection place and improve sealing effect.
As shown in Figure 1, the end of the casing 42 in the present embodiment not connecting with bellows 41, which is equipped with, is fixedly connected on valve
Seal holder part on door.Specifically, seal holder part includes the convex annular that radially outside extends on 42 outer peripheral surface of casing
Platform 422, the first sealing and the second sealing set on 422 axial sides of annular convex platform, wherein axial the two of annular convex platform 422
Side is respectively placed in the ring-shaped depression slot formed between valve deck 2 and valve body 1 and is tightly connected with realizing with valve deck 2 and valve body 1.
By the way that annular convex platform 422 is arranged, convenient for installation site of the spacer dimple tube assembly in valve and installation, realize
Bellows component is detachably connected, replacement convenient for safeguarding；Simultaneously and reduce the curved possibility of valve rod 3, reduce valve rod 3 with
The friction of filler, to improve the sealing effect and service life of filler.
Specifically, the first sealing in the present embodiment includes the annular groove 4231 set on 422 shaft end of annular convex platform, and
The gasket 4232 being installed in annular groove 4231；Second sealing is that annular convex platform 422 and the metal of valve body 1 or valve deck 2 connect
Contacting surface, intermediate annular groove 4231 and gasket 4232 are set to the radial outside of metal contact surface.
By the way that annular convex platform 422 is arranged, so that the positioning to the first sealing and the second sealing, is easily installed and controls
The decrement of first sealing simultaneously prevents the first sealing from being pressed scattered damage by pressure；It include gasket 4232 by the first sealing of setting
And second sealing be metal contact surface, soft seal between bellows component and valve and hard sealing are realized, wherein firmly close
Gasket 4232 in the soft seal of metal contact surface protection in envelope, to extend the service life of gasket 4232 and mention
The high reliability of valve.
Embodiment 2
The present embodiment provides a kind of valves, and compared with the structure of the valve provided in embodiment, existing difference only exists
Different in the set-up mode of the barrier assembly of bellows component, remaining structure of valve is in the same manner as in Example 1.
As shown in fig. 7, barrier assembly in the present embodiment be set on 42 inner peripheral surface of casing radially inside extend the
Two boss 421, second boss 421 are connected to the axial end portion of the first connector 411, and fixed part is fixedly connected with second boss 421
With the axial end portion of the first connector 411, and the second boss 421 of casing 42 and 2 inner wall of valve deck have the installation in the second gap 424
In in valve deck 2.It should be noted that radially inner side refers to the direction in Fig. 1 close to valve rod 3.
As shown in fig. 7, the fixed part in the present embodiment include welding point 431 and be set to casing 42 and the first connector
The accommodating chamber 432 of the receiving welding point 431 of fixed connection place on 411.Specifically, the first connector 411 is set to second boss
Annular groove 4231 on the shaft end of 421 axially inner side, the diameter inner bevel of second boss 421 and the first connector 411 is common
Constitute accommodating chamber 432.Certainly, accommodating chamber 432 can also be arranged to the shape illustrated in other non-figures.
As a kind of interchangeable embodiment, refering to what is shown in Fig. 8, by the diameter inner bevel of second boss 421 and first
The shaft end end face of connector 411 collectively forms accommodating chamber 432.Certainly, accommodating chamber 432 can also be arranged to illustrate in other non-figures
Shape.
As a kind of interchangeable embodiment, refering to what is shown in Fig. 9, by second boss 421 close to the step surface of casing 42
Accommodating chamber 432 is collectively formed with the annular groove 4231 on the shaft end of the first connector 411.Certainly, accommodating chamber 432 can also be arranged
At the shape illustrated in other non-figures.
A kind of bellows component of the invention is installed on the installation steps in valve: firstly, casing 42 and/or the will be set to
The accommodating chamber 432 of fixed connection place forms welding point 431 by welding on a connection piece 411；Secondly bellows component is set
It is welded to connect in accommodation space 5, and by the second connector 413 on valve rod 3；Gasket 4232 is then placed in annular convex platform
It on 422 annular groove 4231, and is installed in the ring-shaped depression slot formed between valve deck 2 and valve body 1, then valve deck 2 etc. is installed
In installation can be completed on valve body 1.
Barrier assembly is arranged by the axially inner side in fixed part, the stream in valve in a kind of bellows component of the invention
Body first acts on barrier assembly, avoids fixed part directly by the effect of fluid, and reduce work by the dispersion of barrier assembly
For the Fluid pressure of fixed part, prevent fixed part from cracking so that appearance the case where leakage, to extend making for bellows component
Use the service life.
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 (14)
1. a kind of bellows component characterized by comprising
Bellows；
Casing is sheathed on outside the bellows, and is fixed far from the axially external of valve body by fixed part on the bellows
Connection；
And barrier assembly, it is set between the bellows and described sleeve pipe, the axis for being at least partially disposed at the fixed part is inside
Side, the barrier assembly avoid the fluid in valve from directly acting on the fixed part.
2. a kind of bellows component according to claim 1, which is characterized in that the bellows it is described axially external solid
Surely there is the first connector, first connector is fixedly connected by the fixed part with described sleeve pipe.
3. a kind of bellows component according to claim 1 or 2, which is characterized in that the fixed part includes welding point.
4. a kind of bellows component according to claim 3, which is characterized in that the fixed part further includes being set to the set
The accommodating chamber of the receiving welding point of fixed connection place on pipe and/or the first connector.
5. a kind of bellows component according to claim 4, which is characterized in that the barrier assembly includes being set to described the
The first boss that radially outside extends on a connection piece outer peripheral surface, and it is radially interior set on described sleeve pipe inner peripheral surface
The second boss that side extends, the first boss are mutually axially abutted with the second boss.
6. a kind of bellows component according to claim 5, which is characterized in that it is convex that the first boss is set to described second
The axially inner side of platform, the accommodating chamber include the shaft end inner chamfer of the second boss and/or the shaft end of first connector
The space that outer chamfer is formed.
7. a kind of bellows component according to claim 4, which is characterized in that the barrier assembly is set on described sleeve pipe
The inner peripheral surface second boss that radially inside extends, the second boss are connected to the axial end portion of first connector,
The fixed part is fixedly connected with the axial end portion of the second boss Yu first connector.
8. a kind of bellows component according to claim 1, which is characterized in that described sleeve pipe does not connect with the bellows
The end connect is equipped with the seal holder part being fixedly connected on valve.
9. a kind of valve characterized by comprising
Valve body；
Valve deck is removably connected to the valve body；
Valve rod, be sequentially connected exterior operator and be located at the intracorporal spool of the valve；
And a kind of bellows component as described in claim 1-8 any one, wherein the bellows-sheathed sets and is fixed on
On the valve rod, the seal holder part of described sleeve pipe is fixedly connected between the valve deck and the valve body.
10. a kind of valve according to claim 9, which is characterized in that the first connector and the valve of the bellows
There are the first gap to be installed in the valve deck for lid inner wall.
11. a kind of valve according to claim 9 or 10, which is characterized in that the seal holder part includes described sleeve pipe
The annular convex platform that radially outside extends on outer peripheral surface, the axial sides of the annular convex platform respectively with the valve deck and described
Valve seal connection.
12. a kind of valve according to claim 11, which is characterized in that the seal holder part further includes being respectively arranged on institute
State the first sealing of a pair and a pair of second sealing on the axial end face of annular convex platform two sides.
13. a kind of valve according to claim 12, which is characterized in that first sealing includes being set to the annular
The annular groove of boss axial end face, and the gasket being installed in the annular groove；Second sealing is the annular
The metal contact surface of boss and the valve body or valve deck.
14. a kind of valve according to claim 13, which is characterized in that the annular groove and the gasket are set on described
The radial outside of metal contact surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811612851.6A CN109538819A (en) | 2018-12-27 | 2018-12-27 | A kind of bellows component and a kind of valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811612851.6A CN109538819A (en) | 2018-12-27 | 2018-12-27 | A kind of bellows component and a kind of valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109538819A true CN109538819A (en) | 2019-03-29 |
Family
ID=65857412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811612851.6A Pending CN109538819A (en) | 2018-12-27 | 2018-12-27 | A kind of bellows component and a kind of valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109538819A (en) |
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| CN112128465A (en) * | 2020-09-24 | 2020-12-25 | 北京前沿动力科技股份有限公司 | Supercritical carbon dioxide regulating valve rod sealing structure |
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| CN103968147A (en) * | 2014-05-29 | 2014-08-06 | 昆山维萨阀门有限公司 | Corrugated pipe brake valve |
| CN105508720A (en) * | 2016-01-14 | 2016-04-20 | 北京市阀门总厂股份有限公司 | Corrugated pipe stop valve for photo-thermal electricity generation fused salt |
| CN207018543U (en) * | 2017-04-26 | 2018-02-16 | 上海百图低温阀门有限公司 | Corrugated tube sealing structure cryogenic globe valve |
| CN207333936U (en) * | 2017-09-05 | 2018-05-08 | 湖南北科通用阀门有限公司 | A kind of double-ply bellows shut-off valve |
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| CN112128465A (en) * | 2020-09-24 | 2020-12-25 | 北京前沿动力科技股份有限公司 | Supercritical carbon dioxide regulating valve rod sealing structure |
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