CN203500584U - Lifting type steam extraction check valve with high sealing performance - Google Patents
Lifting type steam extraction check valve with high sealing performance Download PDFInfo
- Publication number
- CN203500584U CN203500584U CN201320610474.9U CN201320610474U CN203500584U CN 203500584 U CN203500584 U CN 203500584U CN 201320610474 U CN201320610474 U CN 201320610474U CN 203500584 U CN203500584 U CN 203500584U
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- valve
- sealing performance
- extraction check
- high sealing
- check valve
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Abstract
The utility model discloses a lifting type steam extraction check valve with high sealing performance. The lifting type steam extraction check valve comprises a valve body, a valve base, a valve clack and a valve cover, wherein the valve base is arranged inside the valve body, the valve clack is matched with the valve base, and the valve cover is connected with the valve body. A shaft of the valve clack is fixed on the valve cover through a shaft sleeve and connected with a valve rod which penetrates through a valve-cover middle hole, filling material is arranged between the valve rod and the valve-cover middle hole, the end portion of the valve-cover middle hole is connected with a filling material pressing cover, the valve base is in spherical fit with the valve clack, a plurality of first annular deformation grooves are formed in the inner cylindrical surface of the valve base, a plurality of second annular deformation grooves are formed in the outer cylindrical surface of the valve base, and the first annular deformation grooves and the second annular deformation grooves are distributed at intervals in the axial direction. The sealing performance of the lifting type steam extraction check valve with the high sealing performance is improved greatly, and welding deformation can be effectively prevented from affecting a sealing surface so as to guarantee the good sealing performance of the lifting type steam extraction check valve.
Description
Technical field
The utility model relates to a kind of check valve, particularly relates to a kind of rise-fall type extraction check valve door.
Background technique
Rise-fall type extraction check valve door is mainly used in that each section of power station steam turbine taken out blow-off line and other require in the steam of quick closedown or the industrial pipeline system of water, under the effect of refluence medium and the powerful return spring of single-acting, rapid throttle down, to prevent that a large amount of media from flowing backwards along bad steam turbine or other power plant.
Valve seat in rise-fall type extraction check valve door and the sealability of flap are in use particularly crucial, if its poor sealing easily causes it to lose efficacy, even damage.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of valve seat and flap surface of contact is large and the on-deformable high sealing performance rise-fall type of valve seat extraction check valve door.
In order to solve the problems of the technologies described above, the utility model adopts following technological scheme:
A kind of high sealing performance rise-fall type extraction check valve door, comprise valve body, be arranged on the valve seat in valve body, the flap matching with valve seat, the valve gap being connected with valve body, the axle of described flap is fixed on valve gap by axle sleeve and is connected with valve rod, described valve rod is through valve gap mesopore, between described valve rod and valve gap mesopore, be provided with filler, in described valve gap, bore ends is connected with Gland, between described valve seat and flap for sphere coordinates, on described valve seat inner cylindrical surface, offer a plurality of ring-type distortion grooves one, on described valve seat external cylindrical surface, offer a plurality of ring-type distortion grooves two, described a plurality of ring-type distortion grooves one and a plurality of ring-type distortion groove two are spaced apart vertically.
As preferably, on the axle of described flap, offer vertically air vent.
As preferably, between described valve rod and valve gap mesopore, be provided with filler spacer ring.
As preferably, the valve gap mesopore place of described valve gap is communicated with leak-off connection joint.
The utility model high sealing performance rise-fall type extraction check valve door, by being ball face sealing by valve seat and flap design, can increase the sealing contact surface between valve seat and flap, greatly improved its sealability, on valve seat inner cylindrical surface, offer a plurality of ring-type distortion grooves one and on valve seat external cylindrical surface, offer a plurality of ring-type distortion grooves two simultaneously, can effectively prevent the impact of welding deformation on sealing surface like this, with the sealability that guarantees that it is good.
The utility model high sealing performance rise-fall type extraction check valve door, architecture advances is simple, and usability promotes significantly.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the structural representation of the utility model high sealing performance rise-fall type extraction check valve door.
Fig. 2 is the leak-off connection joint structure schematic diagram in the utility model.
Wherein, reference character: 1 is valve body, and 2 is valve seat, 3 is flap, and 4 is valve gap, 5 axles that are flap, 6 is axle sleeve, and 7 is valve rod, and 8 is valve gap mesopore, 9 is filler, and 10 is Gland, and 11 is ring-type distortion groove one, 12 is ring-type distortion groove two, 13 is air vent, and 14 is filler spacer ring, and 15 is leak-off connection joint.
Embodiment
Disclosed all features in this specification, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Disclosed arbitrary feature in this specification, unless narration especially all can be replaced by other equivalences or the alternative features with similar object.That is,, unless narration especially, each feature is an example in a series of equivalences or similar characteristics.
As depicted in figs. 1 and 2, the utility model high sealing performance rise-fall type extraction check valve door, comprise valve body 1, be arranged on the valve seat 2 in valve body, the flap 3 matching with valve seat, the valve gap 4 being connected with valve body, the axle 5 of described flap is fixed on valve gap by axle sleeve 6 and is connected with valve rod 7, described valve rod 7 is through valve gap mesopore 8, between described valve rod and valve gap mesopore, be provided with filler 9, in described valve gap, bore ends is connected with Gland 10, between described valve seat 2 and flap 3 for sphere coordinates, on described valve seat 2 inner cylindrical surfaces, offer a plurality of ring-type distortion grooves 1, on described valve seat 2 external cylindrical surfaces, offer a plurality of ring-type distortion grooves 2 12, described a plurality of ring-type distortion grooves 1 and a plurality of ring-type distortion groove 2 12 are spaced apart vertically.
As depicted in figs. 1 and 2, in the utility model high sealing performance rise-fall type extraction check valve door, on the axle 5 of flap, offer vertically air vent 13, can reduce surface friction drag and can reach freely to rise and fall not affected by vacuum.8 of valve rod 7 and valve gap mesopores are provided with filler spacer ring 14, valve gap mesopore 8 places of valve gap 4 are communicated with leak-off connection joint 15, can drainage valve body institute leaked steam, so just can reduce the pretightening force of filler 9, reduce the frictional force of valve rod 7 simultaneously, make lifting action more flexible.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (4)
1. a high sealing performance rise-fall type extraction check valve door, comprise valve body (1), be arranged on the valve seat (2) in valve body, the flap matching with valve seat (3), the valve gap being connected with valve body (4), the axle of described flap (5) is fixed on valve gap by axle sleeve (6) and is connected with valve rod (7), described valve rod (7) is through valve gap mesopore (8), between described valve rod and valve gap mesopore, be provided with filler (9), in described valve gap, bore ends is connected with Gland (10), it is characterized in that: between described valve seat (2) and flap (3) for sphere coordinates, on described valve seat (2) inner cylindrical surface, offer a plurality of ring-type distortion grooves one (11), on described valve seat (2) external cylindrical surface, offer a plurality of ring-type distortion grooves two (12), described a plurality of ring-type distortion grooves one (11) and a plurality of ring-type distortion groove two (12) are spaced apart vertically.
2. high sealing performance rise-fall type extraction check valve door according to claim 1, is characterized in that: on the axle of described flap (5), offer vertically air vent (13).
3. high sealing performance rise-fall type extraction check valve door according to claim 1, is characterized in that: between described valve rod (7) and valve gap mesopore (8), be provided with filler spacer ring (14).
4. high sealing performance rise-fall type extraction check valve door according to claim 1, is characterized in that: the valve gap mesopore (8) of described valve gap (4) locates to be communicated with leak-off connection joint (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320610474.9U CN203500584U (en) | 2013-09-30 | 2013-09-30 | Lifting type steam extraction check valve with high sealing performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320610474.9U CN203500584U (en) | 2013-09-30 | 2013-09-30 | Lifting type steam extraction check valve with high sealing performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203500584U true CN203500584U (en) | 2014-03-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320610474.9U Expired - Fee Related CN203500584U (en) | 2013-09-30 | 2013-09-30 | Lifting type steam extraction check valve with high sealing performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203500584U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896154A (en) * | 2015-05-25 | 2015-09-09 | 蚌埠南自仪表有限公司 | Sleeve one-way valve |
| CN104913107A (en) * | 2015-05-25 | 2015-09-16 | 蚌埠南自仪表有限公司 | Flexible sealing structure for valve deck and valve rod of one-way valve |
| CN109307091A (en) * | 2018-09-26 | 2019-02-05 | 河北博路天宝石油设备制造有限公司 | A kind of explosion-proof type valve of oil equipment |
-
2013
- 2013-09-30 CN CN201320610474.9U patent/CN203500584U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896154A (en) * | 2015-05-25 | 2015-09-09 | 蚌埠南自仪表有限公司 | Sleeve one-way valve |
| CN104913107A (en) * | 2015-05-25 | 2015-09-16 | 蚌埠南自仪表有限公司 | Flexible sealing structure for valve deck and valve rod of one-way valve |
| CN109307091A (en) * | 2018-09-26 | 2019-02-05 | 河北博路天宝石油设备制造有限公司 | A kind of explosion-proof type valve of oil equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Lifting type steam extraction check valve with high sealing performance Effective date of registration: 20170125 Granted publication date: 20140326 Pledgee: The Great Wall West Bank Bank of China Deyang hi tech branch Pledgor: SICHUAN NAITE VALVE Co.,Ltd. Registration number: 2017990000081 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |