CN204828686U - Novel case auxiliary seal device - Google Patents
Novel case auxiliary seal device Download PDFInfo
- Publication number
- CN204828686U CN204828686U CN201520619072.4U CN201520619072U CN204828686U CN 204828686 U CN204828686 U CN 204828686U CN 201520619072 U CN201520619072 U CN 201520619072U CN 204828686 U CN204828686 U CN 204828686U
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- Prior art keywords
- auxiliary seal
- seal ring
- opening elasticity
- auxiliary
- valve seat
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- 238000007789 sealing Methods 0.000 claims description 35
- 238000010276 construction Methods 0.000 claims description 3
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Abstract
The utility model discloses a novel case auxiliary seal device encircles the triplex by disk seat cage cover, case, opening elasticity auxiliary seal, the case side has together or multichannel auxiliary seal groove according to operating pressure, different the opening of temperature, auxiliary seal inslot installation opening elasticity auxiliary seal ring, opening elasticity auxiliary seal encircles to hug closely with disk seat cage cover inner wall and closes the matching, forms the one or more auxiliary seal point, open disk seat cage cover top has the medium manhole. The utility model discloses it has opening elasticity auxiliary seal to encircle to design on the case, has increased the one or more auxiliary seal point, and the auxiliary seal point can reduce the primary seal spillage by a wide margin when leaking in the primary seal appearance is closed to the valve, and the sealed face cavitation that produces in the time of just avoiding the interior hourglass of primary seal face is erodeed to can prevent that medium impurity is to the damage of primary seal face, extension primary seal life.
Description
Technical field
The utility model relates to the valve such as drain valve and steam valve relevant apparatus field, particularly relates to a kind of Novel valve core auxiliary sealing device.
Background technique
Existing high-temperature high-pressure drain valve and steam valve in the market, is mainly contacted by the linear contact lay of spool and the sealing surface of valve seat or face and forms sealing effect, cuts off the hydrophobic or vapor flow of High Temperature High Pressure.In actual use, the pressure reduction born due to spool and sealing surface of seat is high, and may carry fine impurity secretly in medium, when particularly leaking within valve occurs, medium forms serious washing away and cavitation to spool sealing surface of seat, damages sealing surface, causes sealing face leakage.
Model utility content
The purpose of this utility model is to provide a kind of Novel valve core auxiliary sealing device, strengthens the sealing effect of spool and valve seat, extends the working life of high-temperature high-pressure drain valve or steam valve.
For solving the problems of the technologies described above, the utility model is achieved through the following technical solutions:
A kind of Novel valve core auxiliary sealing device, be made up of valve seat cage cover, spool, opening elasticity auxiliary seal ring three part, described spool side has one or multi-channel auxiliary seal groove, fastening construction opening elasticity auxiliary seal ring in described auxiliary seal groove, described opening elasticity auxiliary seal ring and valve seat cage overlap inwall and are close to close and mate, and form one or more auxiliary seal point; Described valve seat cage cover top has medium access aperture.
Opening elasticity auxiliary seal ring does not affect spool and moves up and down, opening elasticity auxiliary seal ring can produce resiliently deformable when being subject to the inwall extruding of valve seat cage cover, design because of opening elasticity auxiliary seal endless belt elasticity and for opening, automatically the size of opening can be adjusted according to extruding, make the opening elasticity auxiliary seal ring on spool and valve seat cage overlap inwall to be close to, play the effect of sealing reducing pressure by regulating flow.
Wherein, the inclination in the inclination of described spool bottom bevel and valve seat cage cover inner main seal face matches, and forms primary sealing area linear sealing.
Wherein, described medium access aperture is provided with two or more, and even circumferential is arranged.
Wherein, the width of described opening elasticity auxiliary seal ring is slightly less than the width of auxiliary seal groove, conveniently can install and consider opening elasticity auxiliary seal ring expanded by heating.
Wherein, the material of described opening elasticity auxiliary seal ring is metal alloy compositions, and can carry out selection material according to the medium, working pressure, temperature etc. used, the hardness of opening elasticity auxiliary seal ring is lower than valve seat cage cover.
Wherein, the thickness of described opening elasticity auxiliary seal ring is slightly larger than the degree of depth of auxiliary seal groove.Opening elasticity auxiliary seal ring overlaps inwall and is close to close and mates with valve seat cage when nature, form auxiliary seal point; When the upper and lower switch of spool, opening elasticity auxiliary seal ring and valve seat cage overlap inwall and extrude and produce resiliently deformable, make opening elasticity auxiliary seal ring dehisce to diminish, avoid opening elasticity auxiliary seal ring and valve seat cage to overlap inwall and occur bite phenomenon.
When spool is when closing, spool auxiliary seal can play reducing pressure by regulating flow effect to medium, during as primary seal appearance leakage, significantly can reduce leakage rate (can reduce the leakage rate of more than 95%).
When spool is in opening process, when last one opening elasticity auxiliary seal ring is promoted to medium access aperture, spool valve seat primary seal is separated ahead of time, and local steam corrosion strikes damages sealing surface to avoid primary seal to occur, extends the working life of primary sealing area.
Be close to because the opening elasticity auxiliary seal ring on spool and valve seat cage overlap inwall, the impurity in medium can be avoided to be stuck on primary sealing area, extend the working life of primary sealing area.
Compared with prior art, the beneficial effects of the utility model are:
1, freestanding valve seat cage Analysis of Nested Design energy easy maintenance and replacement;
2, spool is designed with opening elasticity auxiliary seal ring, significantly can reduces leakage rate when valves leakage;
3, spool is designed with opening elasticity auxiliary seal ring, avoids primary seal to occur steam corrosion strikes, extend primary seal working life;
4, spool is designed with opening elasticity auxiliary seal ring, avoids the impurity in medium to be stuck in primary seal, extend primary seal working life.
Accompanying drawing explanation
Fig. 1 is structure sectional view of the present utility model;
Fig. 2 is the structure sectional view of spool in the utility model;
Fig. 3 is the structural representation of the utility model split shed elasticity auxiliary seal ring;
Fig. 4 is the sectional view of spool in opening process in embodiment one;
Wherein: 1, valve seat cage cover; 2, spool; 3, opening elasticity auxiliary seal ring; 4, medium access aperture; 11, primary sealing area; 21, auxiliary seal groove; 22, auxiliary seal point.
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Embodiment one:
As shown in Figure 1, Figure 2, shown in Fig. 3 and Fig. 4, the utility model is a kind of Novel valve core auxiliary sealing device, be made up of valve seat cage cover 1, spool 2, opening elasticity auxiliary seal ring 3 three part, described spool 2 lower outer surface has three road auxiliary seal groove 21, fastening construction opening elasticity auxiliary seal ring 3 in described auxiliary seal groove 21, described opening elasticity auxiliary seal ring 3 and valve seat cage overlap 1 inwall and are close to close and mate, and form three auxiliary seal points 22; Medium access aperture 4 is had above described valve seat cage cover 1.
Opening elasticity auxiliary seal ring 3 does not affect spool 2 and moves up and down, opening elasticity auxiliary seal ring 3 is subject to producing resiliently deformable when valve seat cage overlaps 1 inwall extruding, be with elasticity because of opening elasticity auxiliary seal ring 3 and design for opening, automatically the size of opening can be adjusted according to extruding, make the opening elasticity auxiliary seal ring 3 on spool 2 overlap 1 inwall with valve seat cage to be close to, play the effect of sealing reducing pressure by regulating flow.
Wherein, the inclination that the inclination of described spool 2 bottom bevel and valve seat cage overlap 1 inner main seal face 11 matches, and forms primary sealing area linear sealing.
Wherein, described medium access aperture 4 is provided with two or more, and even circumferential is arranged.
Wherein, the width of described opening elasticity auxiliary seal ring 3 is slightly less than the width of auxiliary seal groove 21, conveniently can install and consider opening elasticity auxiliary seal ring 3 expanded by heating.
Wherein, the material of described opening elasticity auxiliary seal ring 3 is metal alloy compositions, can carry out selection material according to the medium, working pressure, temperature etc. used, and the hardness of opening elasticity auxiliary seal ring 3 is lower than valve seat cage cover 1.
Wherein, the thickness of described opening elasticity auxiliary seal ring 3 is slightly larger than the degree of depth of auxiliary seal groove 21.Opening elasticity auxiliary seal ring 3 overlaps 1 inwall and is close to close and mates with valve seat cage when nature, form auxiliary seal point 22; When spool about 2 switch, opening elasticity auxiliary seal ring 3 and valve seat cage overlap 1 inwall and extrudes and produce resiliently deformable, make opening elasticity auxiliary seal ring 3 dehisce to diminish, avoid opening elasticity auxiliary seal ring 3 and valve seat cage to overlap 1 inwall and occur bite phenomenon.
When spool 2 is when closing, spool auxiliary seal can play reducing pressure by regulating flow effect to medium, during as primary seal appearance leakage, significantly can reduce leakage rate (can reduce the leakage rate of more than 95%).
When spool 2 is in opening process, when last one opening elasticity auxiliary seal ring 3 is promoted to medium access aperture, spool 2 valve seat primary seal is separated ahead of time, and local cavitation damages sealing surface to avoid primary seal to occur, extends the working life of primary sealing area 11.
Be close to because the opening elasticity auxiliary seal ring 3 on spool 2 overlaps 1 inwall with valve seat cage, the impurity in medium can be avoided to be stuck on primary sealing area 11, extend the working life of primary sealing area 11.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. a Novel valve core auxiliary sealing device, it is characterized in that: be made up of valve seat cage cover (1), spool (2), opening elasticity auxiliary seal ring (3) three part, described spool (2) side has one or multi-channel auxiliary seal groove (21), fastening construction opening elasticity auxiliary seal ring (3) in described auxiliary seal groove (21), described opening elasticity auxiliary seal ring (3) is close to close with valve seat cage cover (1) inwall and is mated, and forms one or more auxiliary seal point (22); Described valve seat cage cover (1) top has medium access aperture (4).
2. a kind of Novel valve core auxiliary sealing device according to claim 1, it is characterized in that: the inclination of described spool (2) bottom bevel and the inclination in valve seat cage cover (1) inner main seal face (11) match, form primary sealing area linear sealing.
3. a kind of Novel valve core auxiliary sealing device according to claim 1, is characterized in that: described medium access aperture (4) is provided with two or more according to through-current capacity demand, and even circumferential is arranged.
4. a kind of Novel valve core auxiliary sealing device according to claim 1, it is characterized in that: described opening elasticity auxiliary seal ring (3) is metal alloy compositions, the hardness of described opening elasticity auxiliary seal ring (3) is lower than valve seat cage cover (1).
5. a kind of Novel valve core auxiliary sealing device according to claim 1, is characterized in that: the width of described opening elasticity auxiliary seal ring (3) is slightly less than the width of auxiliary seal groove (21),
6. a kind of Novel valve core auxiliary sealing device according to claim 1, is characterized in that: the thickness of described opening elasticity auxiliary seal ring (3) is slightly larger than the degree of depth of auxiliary seal groove (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520619072.4U CN204828686U (en) | 2015-08-15 | 2015-08-15 | Novel case auxiliary seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520619072.4U CN204828686U (en) | 2015-08-15 | 2015-08-15 | Novel case auxiliary seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204828686U true CN204828686U (en) | 2015-12-02 |
Family
ID=54686289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520619072.4U Active CN204828686U (en) | 2015-08-15 | 2015-08-15 | Novel case auxiliary seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204828686U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111750123A (en) * | 2019-03-29 | 2020-10-09 | 中核苏阀科技实业股份有限公司 | Valve core assembly and regulating valve suitable for high-temperature working condition |
-
2015
- 2015-08-15 CN CN201520619072.4U patent/CN204828686U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111750123A (en) * | 2019-03-29 | 2020-10-09 | 中核苏阀科技实业股份有限公司 | Valve core assembly and regulating valve suitable for high-temperature working condition |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180726 Address after: 518000 Shenzhen District, Longhua, Guangdong province Longhua street, Pinus tabulaeformis community, 662, 203, Lai yuan mansion. Patentee after: Yuan special valve development (Shenzhen) Co., Ltd. Address before: 514700 Guangdong, Meizhou, Meixian, Cheng Chiang Town, Huai Gang village, Liao lake, Deng house Patentee before: Deng Jincai |
|
| TR01 | Transfer of patent right |