CN204042047U - Dress formula fire prevention fixing ball valve in one - Google Patents
Dress formula fire prevention fixing ball valve in one Download PDFInfo
- Publication number
- CN204042047U CN204042047U CN201420251366.1U CN201420251366U CN204042047U CN 204042047 U CN204042047 U CN 204042047U CN 201420251366 U CN201420251366 U CN 201420251366U CN 204042047 U CN204042047 U CN 204042047U
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- China
- Prior art keywords
- valve
- fire
- valve body
- valve seat
- packing ring
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- Expired - Fee Related
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- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The utility model relates to a kind of upper dress formula fire prevention fixing ball valve, comprise valve body, valve seat, valve gap, valve rod, spheroid, setting-in soft seal circle in valve seat metallic sealing section, mainly valve rod and spheroid adopt integrally casting to form valve rod spheroid assembly parts, self tightening fire-proof sealing device is provided with between valve seat periphery and valve channel inwall, this self tightening fire-proof sealing device is by packing ring of preventing fires, Expanded graphite fire-protection ring, pushing block and spring composition, the interior V-arrangement face of Expanded graphite fire-protection ring cooperatively interacts with the outer V-arrangement face of fire prevention packing ring and contacts, the other end of fire prevention packing ring is fitted on the radial step of valve body.When a fire, Expanded graphite fire-protection ring is subject to spring pressure, and in it, V-arrangement face is strutted by the outer V-arrangement face of packing ring of preventing fires, and realizes the radial seal energized by internal pressure between valve seat and valve body, and improve the sealability under fire condition, prevent fire spread, fireproof performance is good.Be applicable to oil, natural gas extraction and gas transmission system, and the pipeline system of inflammable and explosive medium.
Description
Technical field
The utility model belongs to valve field, particularly about a kind of fixing ball valve.The utility model is applicable to oil, natural gas extraction and gas transmission system, and the pipeline system of inflammable and explosive medium.
Background technique
Fire-proof ball valve is generally made up of valve body, valve seat, valve gap, valve rod, spheroid, and valve seat adopts soft, hard double seal, and soft sealing face is normal sealing surface, and hard sealing surface is fire proof seal face.As a kind of fire-proof ball valve that China Patent No. is CN201320044993, comprise valve body, spheroid, spheroid is installed in valve body, sealing seat is provided with between described spheroid and valve body, described sealing seat comprises metallic packing ring and soft Sealing, metallic packing ring is installed between spheroid and valve body, and the inner sealing surface that contacts with spheroid of described metallic packing ring is provided with the groove of accommodating soft Sealing, described soft Sealing is flush-mounted in described groove, and be filled with graphite material between the groove of soft Sealing and described metallic packing ring, the outer surface of soft Sealing is also coated with high-temperature coating, the Compress Spring extruded on spheroid by metallic packing ring is also equiped with between described metallic packing ring and valve body.Its sealing seat possesses good fire prevention, anti-lets out function and heat-resisting quantity, can effective the spreading of fire preventing.Its major defect is in high temperature of fire situation, and after the soft seal circle between valve seat periphery and valve channel inner hole wall is burned, its sealability declines, and easily occurs between the two leaking, poor-performing of setting fire.
Summary of the invention
The purpose of this utility model is the shortcoming existed for prior art, provides the upper dress formula fire prevention fixing ball valve that a kind of fireproof performance is good.
The technical solution of the utility model comprises valve body, valve seat, valve gap, valve rod, spheroid, setting-in soft seal circle in valve seat metallic sealing section, valve body is integrated forging and forms, rubber seal is provided with between valve seat periphery and valve channel inwall, mainly valve rod and spheroid adopt integrally casting to form valve rod spheroid assembly parts, self tightening fire-proof sealing device is provided with between valve seat periphery and valve channel inwall, this self tightening fire-proof sealing device is by packing ring of preventing fires, Expanded graphite fire-protection ring, pushing block and spring composition, Expanded graphite fire-protection ring is arranged between pushing block and fire prevention packing ring, the interior V-arrangement face of Expanded graphite fire-protection ring cooperatively interacts with the outer V-arrangement face of fire prevention packing ring and contacts, the other end of fire prevention packing ring is fitted on the radial step of valve body, spring fitting is at spring seat inner chamber, spring seat and valve seat adjust circle and are fixedly connected with, valve seat adjustment circle is threaded with valve seat periphery, other end and the spring of pushing block contact.
In above technological scheme, valve body lumen has installation passage, and the diameter of this installation passage is greater than sphere diameter, is provided with hard seal ring and soft seal circle between valve body and valve gap, is provided with hard seal ring and soft seal circle between valve rod and valve gap.
The utility model has the advantages that and be provided with self tightening fire-proof sealing device between valve seat periphery and valve channel inwall, when a fire, Expanded graphite fire-protection ring is subject to spring pressure, in it, V-arrangement face is strutted by the outer V-arrangement face of packing ring of preventing fires, realize the radial seal energized by internal pressure between valve seat and valve body, improve the sealability under fire condition, prevent fire spread, fireproof performance is good.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the partial structurtes enlarged view of self tightening fire-proof sealing device in the utility model Fig. 1.
Embodiment
Upper dress formula fire prevention fixing ball valve as shown in Figure 1, comprise valve body 1, valve seat 13, valve gap 14, valve rod, spheroid, setting-in soft seal circle 7 in valve seat 13 metallic sealing section, valve body 1 is integrated forging and forms, rubber seal 12 is provided with between valve seat 13 periphery and valve body 1 vias inner walls, sealed by rubber seal 12 between valve body 1 and valve seat 13 during normal work, valve rod and spheroid adopt integrally casting to become valve rod spheroid assembly parts 6, self tightening fire-proof sealing device is provided with between valve seat 13 periphery and valve body 1 vias inner walls, this self tightening fire-proof sealing device is by packing ring 11 of preventing fires, Expanded graphite fire-protection ring 10, pushing block 9 and spring 8 form, Expanded graphite fire-protection ring 10 is arranged between pushing block 9 and fire prevention packing ring 11, the interior V-arrangement face of Expanded graphite fire-protection ring 10 cooperatively interacts with the outer V-arrangement face of fire prevention packing ring 11 and contacts, V-arrangement face in Expanded graphite fire-protection ring 10 is strutted under pressure medium and spring-force driven dual, realize the radial seal energized by internal pressure of valve seat 13 and valve body 1, as shown in Figure 2.The other end of fire prevention packing ring 11 is fitted on the radial step of valve body 1, spring 8 is arranged on spring seat 2 inner chamber, spring seat 2 and valve seat adjust circle 3 and are fixedly connected with, valve seat adjustment circle 3 is threaded with valve seat 13 periphery, regulate the seal pressure between soft seal circle 7 and ball seal face, other end and the spring 8 of pushing block 9 contact.
Valve body 1 lumen has installation passage, and the diameter of this installation passage is greater than sphere diameter, makes valve seat 13, valve rod spheroid assembly parts 6 can load body cavity from this installation passage.Be provided with hard seal ring and soft seal circle between valve body 1 and valve gap 14, between valve rod and valve gap 14, be provided with hard seal ring and soft seal circle.Axle sleeve 5 and thrust bearing 4 is provided with between the gudgeon of valve rod spheroid assembly parts 6 and valve body 1.
Claims (2)
1. a upper dress formula fire prevention fixing ball valve, comprise valve body (1), valve seat (13), valve gap (14), valve rod, spheroid, setting-in soft seal circle (7) in valve seat (13) metallic sealing section, valve body (1) is integrated forging and forms, rubber seal (12) is provided with between valve seat (13) periphery and valve body (1) vias inner walls, it is characterized in that valve rod and spheroid adopt integrally casting to become valve rod spheroid assembly parts (6), self tightening fire-proof sealing device is provided with between valve seat (13) periphery and valve body (1) vias inner walls, this self tightening fire-proof sealing device is by packing ring of preventing fires (11), Expanded graphite fire-protection ring (10), pushing block (9) and spring (8) composition, Expanded graphite fire-protection ring (10) is arranged between pushing block (9) and fire prevention packing ring (11), the interior V-arrangement face of Expanded graphite fire-protection ring (10) cooperatively interacts with the outer V-arrangement face of fire prevention packing ring (11) and contacts, the other end of fire prevention packing ring (11) is fitted on the radial step of valve body (1), spring (8) is arranged on spring seat (2) inner chamber, spring seat (2) encloses (3) and is fixedly connected with valve seat adjustment, valve seat adjustment circle (3) is threaded with valve seat (13) periphery, other end and the spring (8) of pushing block (9) contact.
2. upper dress formula fire prevention fixing ball valve according to claim 1, it is characterized in that valve body (1) lumen has installation passage, the diameter of this installation passage is greater than sphere diameter, be provided with hard seal ring and soft seal circle between valve body (1) and valve gap (14), between valve rod and valve gap (14), be provided with hard seal ring and soft seal circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420251366.1U CN204042047U (en) | 2014-05-04 | 2014-05-04 | Dress formula fire prevention fixing ball valve in one |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420251366.1U CN204042047U (en) | 2014-05-04 | 2014-05-04 | Dress formula fire prevention fixing ball valve in one |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204042047U true CN204042047U (en) | 2014-12-24 |
Family
ID=52242715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420251366.1U Expired - Fee Related CN204042047U (en) | 2014-05-04 | 2014-05-04 | Dress formula fire prevention fixing ball valve in one |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204042047U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489780A (en) * | 2017-08-23 | 2017-12-19 | 上海伟伦阀门集团江苏有限公司 | A kind of HTHP upper-mounting type ball valve |
| CN110107713A (en) * | 2019-06-10 | 2019-08-09 | 浙江金浦实业有限公司 | A kind of ball valve Novel valve seat |
-
2014
- 2014-05-04 CN CN201420251366.1U patent/CN204042047U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489780A (en) * | 2017-08-23 | 2017-12-19 | 上海伟伦阀门集团江苏有限公司 | A kind of HTHP upper-mounting type ball valve |
| CN110107713A (en) * | 2019-06-10 | 2019-08-09 | 浙江金浦实业有限公司 | A kind of ball valve Novel valve seat |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 |