CN109630703A - A kind of balanced-type valve seal assembly - Google Patents
A kind of balanced-type valve seal assembly Download PDFInfo
- Publication number
- CN109630703A CN109630703A CN201910101207.0A CN201910101207A CN109630703A CN 109630703 A CN109630703 A CN 109630703A CN 201910101207 A CN201910101207 A CN 201910101207A CN 109630703 A CN109630703 A CN 109630703A
- Authority
- CN
- China
- Prior art keywords
- ring
- spool
- jam nut
- lasso
- balanced
- 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.)
- Pending
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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
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
The present invention relates to a kind of balanced-type valve seal assemblies, including guiding lasso (2) and lower jam nut (1), wherein guiding lasso (2) is sheathed on spool (5) outer wall, guiding lasso (2) includes close to the guiding lasso inner ring (21) of spool (5) and far from spool (5) guiding lasso outer ring (22), the guiding lasso inner ring (21) raises upward to form flange collar (211), guiding lasso outer ring (22) upper surface is equipped with annular groove (221), O-ring seal (4) are equipped in the annular groove (221)；Lower jam nut (1) includes the lower jam nut inner ring (11) close to spool (5) and the lower jam nut outer ring (12) far from spool (5), is equipped with V-shaped seal ring (3) between the lower surface of lower jam nut inner ring (11) and the upper surface for being oriented to lasso inner ring (21).Compared with prior art, the present invention has many advantages, such as that structure is simple, has been obviously improved sealing effect.
Description
Technical field
The present invention relates to regulating valve fields in waterpipe, more particularly, to a kind of balanced-type valve seal assembly.
Background technique
Valve all plays an important role in each system of power plant, with the continuous improvement of fired power generating unit parameter, to valve
The requirement of door operational reliability is also continuously improved.The ring structure of valve is to guarantee valve before opening, and medium cannot be a large amount of
Into upper cavity, guarantee the sufficiently small and stable opening and closing of valve opening power.Therefore, one kind is designed to be conducive to sealing ring effect and can mention
The structure of high service life in fact is an important factor for running valve for a long time.
The ring structure of existing balanced-type valve has the following defects, on the one hand can only be close by V-type by pressure medium
Seal struts to guarantee to seal, but since inlet side high-speed Medium acts on V-shaped seal ring one end simultaneously, can not be formed higher
Internal pressure makes procheilon change contact condition and enlarged contact stress, and the wall surface at lip and both ends cannot also be bonded tighter, medium
It can easily pass through and enter upper cavity, cause the pressure of upper cavity excessive, increase opening force, cause valve opening process unstable
It is fixed to be even difficult to the phenomenon that opening valve generation.On the other hand, there is no safeguard measure at sealing ring, high-speed Medium is direct for a long time
It washes away, will affect part leakproofness, reduce sealing ring service life, increase maintenance cost.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of balanced-type valve is close
Sealing assembly.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of balanced-type valve seal assembly is set to valve inner, for preventing fluid from entering valve upper cavity, valve
Inlet is equipped with spool packet, and fluid passes through valve core packet and obstructed by spool, and seal assembly includes guiding lasso and the lower tight spiral shell of spelling
Mother, wherein guide sleeve snare is set in spool outer wall, and the top of valve core packet is affixed with the lower surface for being oriented to lasso, is led
It include being oriented to lasso outer ring close to the guiding lasso inner ring of spool and far from spool to lasso, the guiding lasso inner ring is upward
Flange collar is convexed to form, the guiding lasso outer ring upper surface is equipped with annular groove, is equipped with O-shaped sealing in the annular groove
Circle；Lower jam nut is sheathed in spool outer wall, tight including the lower jam nut inner ring close to spool and the lower spelling far from spool
Nut outer ring, the axial height of the lower jam nut inner ring is less than the axial height of lower jam nut outer ring, lower to spell tight spiral shell
V-shaped seal ring, the lower jam nut outer ring pressure are equipped between the lower surface of female inner ring and the upper surface for being oriented to lasso inner ring
Above groove.
Further, the radial thickness of the flange collar is equal to the radial thickness of lower jam nut inner ring.
Further, the lower surface of lower jam nut inner ring, the upper surface of flange collar, the outer wall of spool, lower spelling are tight
Nut outer ring surrounds a toroidal cavity between the side wall of spool, and the V-shaped seal ring is set in the toroidal cavity.
Further, the radial width of the V-shaped seal ring is equal to the radial width of toroidal cavity.
Further, the axial height of the V-shaped seal ring is equal to the axial height of toroidal cavity.
Further, the V-shaped seal ring is inverted in the toroidal cavity.
Further, the axial width of the O-ring seal is more than or equal to the depth of groove.
Further, the V-shaped seal ring is prepared by water swelling rubber, the V-shaped seal ring of upside down after water suction
To radial and axial expansion, so that the flowing gap between toroidal cavity and V-shaped seal ring is sealed.
Compared with prior art, the present invention devises a kind of structure that can be avoided medium and directly wash away V-shaped seal ring, makes
In the case where the effect of various pressure V-shaped seal ring can seal up a clearance flow, guarantee lower chamber high-pressure medium will not largely into
Enter upper cavity, to better ensure that the stability of valve switch.
Specifically, the present invention has the guide sleeve of flange collar using radial height different lower jam nut 1 and inner ring
Circle cooperation is constituted, so that the lower surface of lower jam nut inner ring, the upper surface of flange collar, the outer wall of spool, lower jam nut outer ring
A toroidal cavity is surrounded between the side wall of spool, V-shaped seal ring, which is inverted into toroidal cavity, can effectively avoid height
Pressure medium will not largely enter upper cavity, and prevent medium directly to wash away V-shaped seal ring, and the setting of flange collar slows down significantly
A possibility that medium by guiding lasso upper surface enters upper cavity, so that sealing effect is obviously improved.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of valve sealing member in the present invention；
Fig. 2 is another structural schematic diagram of valve sealing member in the present invention；
In figure: 1, lower jam nut, 11, lower jam nut inner ring, 12, lower jam nut outer ring, 2, guiding lasso, 21,
It is oriented to lasso inner ring, 211, flange collar, 22, guiding lasso outer ring, 221, groove, 3, V-shaped seal ring, 4, O-ring seal, 5, valve
Core, 6, spool packet.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
A kind of balanced-type valve seal assembly is set to valve inner, for preventing fluid from entering valve upper cavity, valve
Inlet is equipped with spool packet 6, and fluid passes through valve core packet 6 and obstructed by spool 5, and seal assembly includes guiding lasso 2 and lower spelling
Tight nut 1, referring to fig. 2.
Be oriented to 2 part of lasso: it is sheathed on 5 outer wall of spool, referring to fig. 2, and makes top and the guiding of valve core packet 6
The lower surface of lasso 2 is affixed, and guiding lasso 2 includes being oriented to outside lasso close to the guiding lasso inner ring 21 of spool 5 and far from spool 5
Circle 22, the guiding lasso inner ring 21 raises upward to form flange collar 211, and 22 upper surface of guiding lasso outer ring is equipped with ring
Connected in star 221 is equipped with O-ring seal 4 in the annular groove 221.The radial thickness of the flange collar 21 is equal to lower spell tightly
The radial thickness of nut inner ring 11.The axial width of the O-ring seal 4 is more than or equal to the depth of groove 221.
Lower 1 part of jam nut: being sheathed on 5 outer wall of spool, referring to fig. 2, including in the lower jam nut of spool 5
The lower jam nut outer ring 12 of circle 11 and separate spool 5, the axial height of the lower jam nut inner ring 11 are less than lower spell tightly
The axial height of nut outer ring 12 is equipped between the lower surface of lower jam nut inner ring 11 and the upper surface for being oriented to lasso inner ring 21
V-shaped seal ring 3, the lower jam nut outer ring 12 are pressed on 221 top of groove.
The toroidal cavity part of composition: referring to fig. 2, the lower surface of the lower jam nut inner ring 11, flange collar 211 it is upper
Surface, the outer wall of spool 5, lower jam nut outer ring 12 surround a toroidal cavity, the V-type between the side wall of spool 5
Sealing ring 3 is set in the toroidal cavity.The radial width of the V-shaped seal ring 3 is equal to the radial width of toroidal cavity.
The axial height of the V-shaped seal ring 3 is equal to the axial height of toroidal cavity.The V-shaped seal ring 3 is inverted in described
In toroidal cavity.The V-shaped seal ring 3 is prepared by water swelling rubber, and the V-shaped seal ring 3 of upside down is to diameter after water suction
To and axial expansion so that the flowing gap between toroidal cavity and V-shaped seal ring 3 is sealed.
During carrying out practically, spool 5 is lifted up rear fluid and is entered by the entrance of valve, and passes through spool packet 6,
This process high pressure fluid, which has, to be seeped from two lines to upper cavity, and the first paths are by lower jam nut outer ring 12 and guiding
Gap penetration between lasso outer ring 22, but the sealing due to being formed between the O-ring seal 4 in the present invention and groove 221 cooperates, and makes
It obtains infiltration capacity to greatly reduce, fluid a small amount of later also needs enough pressure that could arrive at the top of flange collar 21 and enter annular
Cavity, because of drop gradient caused by flange collar 21, so that can also make the flow and pressure of fluid into the fluid of toroidal cavity
Subtract greatly, and be additionally provided with caused V-shaped seal ring 4 in toroidal cavity, can reach more preferably after 4 water swelling of V-shaped seal ring
Sealing effect reaches complete barrier.And the second paths are to pour annular upwards by the gap between spool packet 6 and spool 5
Cavity, but since the height of 5 bottom of spool will not be lifted beyond the lower surface of flange collar 21, after 4 water swelling of V-shaped seal ring
The fully sufficient barrier fluid of the sealing effect reached enters upper cavity.
Claims (7)
1. a kind of balanced-type valve seal assembly is set to valve inner, for preventing fluid from entering valve upper cavity, valve enters
Spool packet (6) are equipped at mouthful, fluid passes through valve core packet (6) and obstructed by the spool of valve inner (5), which is characterized in that close
Sealing assembly includes:
Guiding lasso (2): being sheathed on spool (5) outer wall, and makes under the top and guiding lasso (2) of valve core packet (6)
Surface is affixed, and guiding lasso (2) includes being oriented to outside lasso close to the guiding lasso inner ring (21) of spool (5) and far from spool (5)
It encloses (22), the guiding lasso inner ring (21) raises upward to be formed flange collar (211), table on the guiding lasso outer ring (22)
Face is equipped with annular groove (221), is equipped with O-ring seal (4) in the annular groove (221)；
Lower jam nut (1): being sheathed on spool (5) outer wall, including the lower jam nut inner ring (11) close to spool (5) and far
Lower jam nut outer ring (12) from spool (5), the axial height of the lower jam nut inner ring (11) are less than the lower tight spiral shell of spelling
The axial height of female outer ring (12), between the lower surface of lower jam nut inner ring (11) and the upper surface of guiding lasso inner ring (21)
Equipped with V-shaped seal ring (3), the lower surface of the lower jam nut outer ring (12) is pressed on above groove (221).
2. a kind of balanced-type valve seal assembly according to claim 1, which is characterized in that the diameter of the flange collar (21)
It is equal to the radial thickness of lower jam nut inner ring (11) to thickness.
3. a kind of balanced-type valve seal assembly according to claim 1, which is characterized in that in the lower jam nut
The lower surface of (11), the upper surface of flange collar (211), the outer wall of spool (5), lower jam nut outer ring (12) are enclosed close to spool (5)
Side wall between surround a toroidal cavity, the V-shaped seal ring (3) is set in the toroidal cavity.
4. a kind of balanced-type valve seal assembly according to claim 3, which is characterized in that the V-shaped seal ring (3)
Radial width be equal to toroidal cavity radial width.
5. a kind of balanced-type valve seal assembly according to claim 4, which is characterized in that the V-shaped seal ring (3)
Axial height be equal to toroidal cavity axial height.
6. a kind of balanced-type valve seal assembly according to claim 3, which is characterized in that the V-shaped seal ring (3)
It is inverted in the toroidal cavity.
7. a kind of balanced-type valve seal assembly according to claim 1, which is characterized in that the O-ring seal (4)
Axial width be more than or equal to groove (221) depth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910101207.0A CN109630703A (en) | 2019-01-31 | 2019-01-31 | A kind of balanced-type valve seal assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910101207.0A CN109630703A (en) | 2019-01-31 | 2019-01-31 | A kind of balanced-type valve seal assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109630703A true CN109630703A (en) | 2019-04-16 |
Family
ID=66064697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910101207.0A Pending CN109630703A (en) | 2019-01-31 | 2019-01-31 | A kind of balanced-type valve seal assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109630703A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201487257U (en) * | 2009-09-04 | 2010-05-26 | 四川华林自控科技有限公司 | Valve body and plug sealing structure of plunger type high-pressure adjusting valve |
| CN201779286U (en) * | 2010-08-10 | 2011-03-30 | 上海阀特流体控制阀门有限公司 | Self-sealing hard double-valve seat with balanced valve spool |
| US20130026406A1 (en) * | 2011-07-27 | 2013-01-31 | Honda Motor Co., Ltd. | Valve device |
| CN207661154U (en) * | 2016-09-20 | 2018-07-27 | 大力士股份有限公司 | Sealing mechanism and regulating valve with sealing mechanism |
| CN208311489U (en) * | 2018-05-24 | 2019-01-01 | 台州健创阀门制造有限公司 | A kind of spring pressure reducing valve |
| CN210034466U (en) * | 2019-01-31 | 2020-02-07 | 中国电建集团上海能源装备有限公司 | Balanced valve sealing assembly |
-
2019
- 2019-01-31 CN CN201910101207.0A patent/CN109630703A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201487257U (en) * | 2009-09-04 | 2010-05-26 | 四川华林自控科技有限公司 | Valve body and plug sealing structure of plunger type high-pressure adjusting valve |
| CN201779286U (en) * | 2010-08-10 | 2011-03-30 | 上海阀特流体控制阀门有限公司 | Self-sealing hard double-valve seat with balanced valve spool |
| US20130026406A1 (en) * | 2011-07-27 | 2013-01-31 | Honda Motor Co., Ltd. | Valve device |
| CN207661154U (en) * | 2016-09-20 | 2018-07-27 | 大力士股份有限公司 | Sealing mechanism and regulating valve with sealing mechanism |
| CN208311489U (en) * | 2018-05-24 | 2019-01-01 | 台州健创阀门制造有限公司 | A kind of spring pressure reducing valve |
| CN210034466U (en) * | 2019-01-31 | 2020-02-07 | 中国电建集团上海能源装备有限公司 | Balanced valve sealing assembly |
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