CN204164410U - A kind of New corrugated pipe seal ball-valve - Google Patents
A kind of New corrugated pipe seal ball-valve Download PDFInfo
- Publication number
- CN204164410U CN204164410U CN201420592654.3U CN201420592654U CN204164410U CN 204164410 U CN204164410 U CN 204164410U CN 201420592654 U CN201420592654 U CN 201420592654U CN 204164410 U CN204164410 U CN 204164410U
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- China
- Prior art keywords
- valve
- guide sleeve
- barrel
- seat
- valve seat
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- Expired - Fee Related
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Abstract
The utility model relates to a kind of New corrugated pipe seal ball-valve, comprise valve body, valve seat, spheroid, valve rod, valve body adopts the three stage structure be made up of left valve barrel, middle valve body and right valve barrel, and valve seat is double-valve-seat, is arranged in the passage of left valve barrel and right valve barrel respectively; Mainly between valve seat and valve channel inwall, bellow seal is set, this bellow seal is made up of bellows and guide sleeve, guide sleeve endoporus coordinates with valve seat periphery is dynamic, between the radial step of guide sleeve and the radial step of valve channel, graphite grazing pad is installed, one end seal welding of bellows is on valve seat periphery, and the other end seal welding is on the ear end face of guide sleeve; On the valve seat of left and right two guide sleeves front-end face between top fill a supporting sleeve, this supporting sleeve is cylindrical structure, is fitted in respectively by the guide sleeve of both sides on the radial step of left valve barrel and right valve barrel.Sealability is very little by the impact of temperature and pressure, and sealability is reliable, is applicable to ultralow temperature, low-pressure medium operating mode.
Description
Technical field
The utility model belongs to valve field, particularly about a kind of ball valve.The utility model is applicable to ultralow temperature mixture condition.
Background technique
At present, the ball valve demand being applied to the ultralow temperature mixture condition such as LNG Liquefied natural gas is increasing, its structure generally comprises valve body, valve seat, spheroid, valve rod, and valve body generally adopts three stage structure, generally adopts carbon seal ring to seal between the valve seat back side and valve channel inwall.But, under-196 ° of ultralow temperature mixture condition, valve body, valve seat and carbon seal ring all can produce contraction, because the shrinkage of metallic material and nonmetallic material is different, and the seal pressure that the seal ring of graphite material realizes needed for sealing is higher, so valve seat coordinates with the motive sealing of carbon seal ring under-196 ° of ultralow-temperature operation conditions, be easy to when pressure is lower occur leaking.
Summary of the invention
The purpose of this utility model is the shortcoming existed for prior art, provides a kind of at ultralow temperature, the reliable New corrugated pipe seal ball-valve of low pressure operating mode lower seal performance.
The technical solution of the utility model comprises valve body, valve seat, spheroid, valve rod, and valve body adopts the three stage structure be made up of left valve barrel, middle valve body and right valve barrel, and valve seat is double-valve-seat, is arranged in the passage of left valve barrel and right valve barrel respectively; Mainly between valve seat and valve channel inwall, bellow seal is set, this bellow seal is made up of bellows and guide sleeve, guide sleeve endoporus coordinates with valve seat periphery is dynamic, between the radial step of guide sleeve and the radial step of valve channel, graphite grazing pad is installed, one end seal welding of bellows is on valve seat periphery, and the other end seal welding is on the ear end face of guide sleeve; On the valve seat of left and right two guide sleeves front-end face between top fill a supporting sleeve, this supporting sleeve is cylindrical structure, is fitted in respectively by the guide sleeve of both sides on the radial step of left valve barrel and right valve barrel.
The utility model has the advantages that and adopt bellow seal to seal between valve seat and valve channel inwall, between its guide sleeve and valve body, between bellows and guide sleeve and valve seat, be static seal state, sealability is very little by the impact of temperature and pressure, sealability is reliable, is applicable to ultralow temperature, low-pressure medium operating mode.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Valve body, 6 positioning shafts, 7 spheroids, 8 left valve barrels, 9 supporting sleeves, 10 valve rods, 11 upper covers, 12 graphite grazing pads in 1 right valve barrel, 2 valve seats, 3 bellowss, 4 guide sleeves, 5.
Embodiment
New corrugated pipe seal ball-valve as shown in Figure 1, comprise valve body, valve seat 2, spheroid 7, valve rod 10, valve body is by left valve barrel 8, the three stage structure that middle valve body 5 and right valve barrel 1 form, valve seat 2 is double-valve-seat, be arranged in the passage of left valve barrel 8 and right valve barrel 1 respectively, valve rod 10 is fixedly connected with spheroid 7 upper end through middle valve body 5, spheroid 7 lower end axis hole coordinates with positioning shaft 6 is dynamic, positioning shaft 6 sealing is fixed on middle valve body 5, its center line overlaps with valve rod 10 center line, sealing fixed installation upper cover 11 on middle valve body 5 outside valve rod 10, valve rod 10 upper end is connected with driving mechanism through upper cover 11, between valve rod 10 and upper cover 11, stuffing box packing is installed, between valve seat 2 and valve channel inwall, bellow seal is set, this bellow seal is made up of bellows 3 and guide sleeve 4, guide sleeve 4 endoporus coordinates with valve seat 2 periphery is dynamic, between the radial step of guide sleeve 4 and the radial step of valve channel, graphite grazing pad 12 is installed, one end seal welding of bellows 3 is on valve seat 2 periphery, the other end seal welding is on the ear end face of guide sleeve 4, and described ear end face is the end face away from spheroid 7 one end, on the valve seat of left and right two guide sleeves 4 front-end face between top fill a supporting sleeve 9, described front-end face is the end face of guide sleeve 4 near spheroid 7 side, this supporting sleeve 9 is cylindrical structure, one end and the guide sleeve 4 of cylinder contact, the radial step of the other end and spheroid 7 contacts, supporting sleeve 9 is compressed by middle valve body 5 both sides end face and the connecting bolt between left valve barrel 8 and right valve barrel 1 and installs, the guide sleeve 4 of both sides is fitted in respectively on the radial step of left valve barrel 8 and right valve barrel 1, realizes being tightly connected between guide sleeve 4 and valve body.
Claims (1)
1. a New corrugated pipe seal ball-valve, comprise valve body, valve seat (2), spheroid (7), valve rod (10), the three stage structure that valve body is made up of left valve barrel (8), middle valve body (5) and right valve barrel (1), valve seat (2) is double-valve-seat, is arranged in the passage of left valve barrel (8) and right valve barrel (1) respectively; It is characterized in that arranging bellow seal between valve seat (2) and valve channel inwall, this bellow seal is made up of bellows (3) and guide sleeve (4), guide sleeve (4) endoporus coordinates with valve seat (2) periphery is dynamic, between guide sleeve (4) radial step and the radial step of valve channel, graphite grazing pad (12) is installed, one end seal welding of bellows (3) is on valve seat (2) periphery, and the other end seal welding is on the ear end face of guide sleeve (4); On the valve seat of left and right two guide sleeves (4) front-end face between top fill a supporting sleeve (9), this supporting sleeve (9) is cylindrical structure, is fitted in respectively on the radial step of left valve barrel (8) and right valve barrel (1) by the guide sleeve (4) of both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420592654.3U CN204164410U (en) | 2014-10-10 | 2014-10-10 | A kind of New corrugated pipe seal ball-valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420592654.3U CN204164410U (en) | 2014-10-10 | 2014-10-10 | A kind of New corrugated pipe seal ball-valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204164410U true CN204164410U (en) | 2015-02-18 |
Family
ID=52538098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420592654.3U Expired - Fee Related CN204164410U (en) | 2014-10-10 | 2014-10-10 | A kind of New corrugated pipe seal ball-valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204164410U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825795A (en) * | 2018-09-10 | 2018-11-16 | 陕西博菲特流体控制装备制造有限公司 | Triangular form double containment cage valve |
-
2014
- 2014-10-10 CN CN201420592654.3U patent/CN204164410U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825795A (en) * | 2018-09-10 | 2018-11-16 | 陕西博菲特流体控制装备制造有限公司 | Triangular form double containment cage valve |
| CN108825795B (en) * | 2018-09-10 | 2024-02-23 | 陕西博菲特流体控制装备制造有限公司 | Triangle double-seal cage valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150218 Termination date: 20171010 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |