CN204647406U - A kind of cryogenic ball valve valve base sealing structure - Google Patents
A kind of cryogenic ball valve valve base sealing structure Download PDFInfo
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- CN204647406U CN204647406U CN201520317926.3U CN201520317926U CN204647406U CN 204647406 U CN204647406 U CN 204647406U CN 201520317926 U CN201520317926 U CN 201520317926U CN 204647406 U CN204647406 U CN 204647406U
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- valve
- valve seat
- lip
- type packing
- spheroid
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Abstract
A kind of cryogenic ball valve valve base sealing structure, comprises valve body, valve seat supporting, valve seat, spheroid, spring, regulating ring; Described valve seat supporting is arranged in valve body, and valve seat is arranged in the groove of valve seat supporting, and spheroid contacts with valve seat; Described valve seat supporting is two stepped cylindrical faces with the fitting surface of valve body, the first lip-type packing is provided with at small column fitting surface, the second lip-type packing is provided with at big column fitting surface, the opening spheroid dorsad of the first lip-type packing, the opening of the second lip-type packing is towards spheroid, and valve seat props up breasting spheroid end and is provided with one section of screw thread, regulating ring screws on the screw thread of valve seat supporting, regulating ring has bulge loop, and bulge loop coordinates with the second lip-type packing, is provided with spring between regulating ring and valve body.The utility model can effectively avoid middle cavity pressure on the impact of the first lip-type packing, improves the integral sealing effect of valve seat bearing position lip-type packing, greatly improves the sealability of valve.
Description
Technical field
The utility model relates to ball-valve structure, particularly the valve base sealing structure of cryogenic ball valve.
Background technique
Existing valve seat construction as shown in Figure 1, mainly comprise valve body, valve seat supporting, valve seat, spheroid etc., lip-type packing is arranged on valve body and valve seat supports junction plane, existing sealing structure effect is poor, particularly when lumen medium enters lip-type packing sealing station, lip-type packing both sides pressure difference diminishes, and the lip of lip-type packing cannot be strutted very ideally, thus have impact on the sealability of valve.
Model utility content
The utility model aims to provide a kind of cryogenic ball valve valve base sealing structure, avoids middle cavity pressure on the impact of lip-type packing, improves the lip-type packing integral sealing effect of valve seat bearing position, improves the sealability of valve.
A kind of cryogenic ball valve valve base sealing structure, comprises valve body, valve seat supporting, valve seat, spheroid, spring, regulating ring; Described valve seat supporting is arranged in valve body, and valve seat is arranged in the groove of valve seat supporting, and spheroid contacts with valve seat; Described valve seat supporting is two stepped cylindrical faces with the fitting surface of valve body, the first lip-type packing is provided with at small column fitting surface, the second lip-type packing is provided with at big column fitting surface, the opening spheroid dorsad of the first lip-type packing, the opening of the second lip-type packing is towards spheroid, and valve seat props up breasting spheroid end and is provided with one section of screw thread, regulating ring screws on the screw thread of valve seat supporting, regulating ring has bulge loop, and bulge loop is connected with the second lip-type packing, is provided with spring between regulating ring and valve body.
Further, described valve body is provided with positioning ring, and positioning ring is fixedly connected with valve body, has locating stud to connect positioning ring and valve seat supporting.
Further, described positioning ring and valve body are for being welded to connect.
Further, described spring is butterfly spring.
Further, the surface of contact of described valve seat and spheroid is arc surface.
The utility model can avoid middle cavity pressure on the impact of the first lip-type packing effectively, improves the integral sealing effect of valve seat bearing position lip-type packing, greatly improves the sealability of valve.
Accompanying drawing explanation
Fig. 1 is existing structure schematic diagram.
Fig. 2 is the utility model structural representation.
Fig. 3 is the schematic diagram of the utility model in valve overall structure.
In figure: 1-valve body, 2-positioning ring, 3-locating stud, 4-first lip-type packing, 5-second lip-type packing, 6-spring, 7-valve seat supports, 8-regulating ring, 9-valve seat, 10-spheroid.
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with accompanying drawing, the utility model is further elaborated.
As shown in Figure 2,3, a kind of cryogenic ball valve valve base sealing structure of the utility model, comprises valve body 1, valve seat supporting 7, valve seat 9, spheroid 10, spring 6, regulating ring 8; Described valve seat supporting 7 is arranged in valve body 1, and valve seat 9 is arranged in the groove of valve seat supporting 7, and spheroid 10 contacts with valve seat 9; Described valve seat supporting 7 is two stepped cylindrical faces with the fitting surface of valve body 1, the first lip-type packing 4 is provided with at small column fitting surface, the second lip-type packing 5 is provided with at big column fitting surface, the opening spheroid 10 dorsad of the first lip-type packing 4, the opening of the second lip-type packing 5 is towards spheroid 10, valve seat supporting 7 is provided with one section of screw thread by spheroid end, regulating ring 8 screws on the screw thread of valve seat supporting 7, regulating ring 8 there is bulge loop, bulge loop is connected with the second lip-type packing 5, is provided with spring 6 between regulating ring 8 and valve body 1.
Further, described valve body 1 is provided with positioning ring 2, and positioning ring 2 is fixedly connected with valve body 1, has locating stud 3 to connect positioning ring 2 and valve seat supporting 7.
Further, described positioning ring 2 and valve body 1 are for being welded to connect.By the positioning action of positioning ring 2 with locating stud 3, making valve seat support 7 cannot rotate, and eliminates valve seat supporting 7 to the damage of lip-type packing in rotation process, thus improves the sealing of lip-type packing.
Further, described spring 6 is butterfly spring.Regulated the spring force of both sides valve seat by regulating ring 8, to determine valve pressure release direction, the practicability of valve entirety can be improved and use flexibility.
Further, described valve seat 9 is arc surface with the surface of contact of spheroid 10, the seal point between valve seat 9 and spheroid 10 can be adjusted automatically, avoid the factors such as machining error on the impact of sealing effect, improves the reliability of sealing.
The utility model is by increasing by the second lip-type packing at lumen pressure direction, block lumen pressure medium by the second lip-type packing and enter valve seat bearing seal position, avoid middle cavity pressure on the impact of the first lip-type packing, thus improve the lip-type packing integral sealing effect of valve seat bearing position, improve the sealing of valve, compared with existing structure: when lumen is full of medium, second lip-type packing 5 stops that lumen medium enters valve seat bearing seal position, i.e. the first lip-type packing 4 position, thus eliminate the impact of lumen medium on the sealability of the first lip-type packing 4, improve valve seal.
Certainly; the utility model also can have other various embodiments; when not deviating from the utility model spirit and essence thereof; those of ordinary skill in the art can make various corresponding change and distortion according to the utility model, but these change accordingly and are out of shape the protection domain that all should belong to the claim appended by the utility model.
Claims (5)
1. a cryogenic ball valve valve base sealing structure, is characterized in that: comprise valve body (1), valve seat supporting (7), valve seat (9), spheroid (10), spring (6), regulating ring (8); Described valve seat supporting (7) is arranged in valve body (1), and valve seat (9) is arranged in the groove of valve seat supporting (7), and spheroid (10) contacts with valve seat (9); Described valve seat supporting (7) is two stepped cylindrical faces with the fitting surface of valve body (1), the first lip-type packing (4) is provided with at small column fitting surface, the second lip-type packing (5) is provided with at big column fitting surface, the opening spheroid (10) dorsad of the first lip-type packing (4), the opening of the second lip-type packing (5) is towards spheroid (10); Valve seat supporting (7) is provided with one section of screw thread by spheroid end, regulating ring (8) screws on the screw thread of valve seat supporting (7), (8) have bulge loop to regulating ring, bulge loop is connected with the second lip-type packing (5), is provided with spring (6) between regulating ring (8) and valve body (1).
2. cryogenic ball valve valve base sealing structure according to claim 1, it is characterized in that: described valve body (1) is provided with positioning ring (2), positioning ring (2) is fixedly connected with valve body (1), has locating stud (3) to connect positioning ring (2) and valve seat supporting (7).
3. cryogenic ball valve valve base sealing structure according to claim 2, is characterized in that: described positioning ring (2) and valve body (1) are for being welded to connect.
4. cryogenic ball valve valve base sealing structure according to claim 1, is characterized in that: described spring (6) is butterfly spring.
5. cryogenic ball valve valve base sealing structure according to claim 1, is characterized in that: described valve seat (9) is arc surface with the surface of contact of spheroid (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520317926.3U CN204647406U (en) | 2015-05-18 | 2015-05-18 | A kind of cryogenic ball valve valve base sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520317926.3U CN204647406U (en) | 2015-05-18 | 2015-05-18 | A kind of cryogenic ball valve valve base sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204647406U true CN204647406U (en) | 2015-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520317926.3U Active CN204647406U (en) | 2015-05-18 | 2015-05-18 | A kind of cryogenic ball valve valve base sealing structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN204647406U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257859A (en) * | 2015-11-10 | 2016-01-20 | 五洲阀门有限公司 | Ultra-low-temperature top entry ball valve and assembly method thereof |
| CN114483999A (en) * | 2018-02-14 | 2022-05-13 | 费希尔控制产品国际有限责任公司 | Ball valve with adjustable trim arrangement |
-
2015
- 2015-05-18 CN CN201520317926.3U patent/CN204647406U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257859A (en) * | 2015-11-10 | 2016-01-20 | 五洲阀门有限公司 | Ultra-low-temperature top entry ball valve and assembly method thereof |
| CN114483999A (en) * | 2018-02-14 | 2022-05-13 | 费希尔控制产品国际有限责任公司 | Ball valve with adjustable trim arrangement |
| CN114483999B (en) * | 2018-02-14 | 2023-04-07 | 费希尔控制产品国际有限责任公司 | Ball valve with adjustable trim arrangement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 67, Section 1, Xueshan Avenue, Dayi County, Chengdu City, Sichuan Province, 611330 Patentee after: Chengdu Chenggao Valve Co.,Ltd. Address before: 611330 Industrial Avenue, Jinyuan Town, Dayi County, Chengdu City, Sichuan Province Patentee before: CHENGDU CHENG GAO VALVE Co.,Ltd. |