CN203286038U - Fireproof fixed ball valve - Google Patents
Fireproof fixed ball valve Download PDFInfo
- Publication number
- CN203286038U CN203286038U CN2013203566394U CN201320356639U CN203286038U CN 203286038 U CN203286038 U CN 203286038U CN 2013203566394 U CN2013203566394 U CN 2013203566394U CN 201320356639 U CN201320356639 U CN 201320356639U CN 203286038 U CN203286038 U CN 203286038U
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Abstract
The utility model relates to a fireproof fixed ball valve which comprises a valve body, a valve seat, a ball body and a valve rod. The ball body and the valve seat are provided with sealing surfaces matched with each other, a spring is mounted between the back face of the valve seat and the valve body in the axial direction, and an O-type rubber sealing ring is arranged between the valve seat and the valve body in the radial direction. The fireproof fixed ball valve is characterized in that a metal supporting pad and a plastic isolation pad are arranged between the spring and a first step of the back face of the valve seat, a V-type flexible graphite fireproof ring is mounted between a second step of the back face of the valve seat and the valve body, and a V-type protruding face matched with the V-type flexible graphite fireproof ring is manufactured on the transverse end face of the upper portion of the metal supporting pad. When fire break out in pipelines, the plastic isolation pad is melted, the metal supporting pad presses the V-type flexible graphite fireproof ring tightly to enable the V-type flexible graphite fireproof ring to be in pressing sealing with the valve body and the valve seat, and the functions of fire proof and sealing are achieved. The fireproof fixed ball valve is suitable for the pipeline systems of petroleum and natural gas extraction and conveying and other flammable and combustible media.
Description
Technical field
The utility model relates to valve field, particularly about a kind of ball valve.The utility model is applicable on the inflammable and explosive medium pipelines such as oil, natural gas extraction and conveying.
Background technique
Ball valve is because having the advantages such as open-close convenient, current global mechanism, and be widely used on oil, natural gas line, the structure of ball valve comprises valve body, valve seat, spheroid, valve rod, spheroid and valve seat have the sealing surface that cooperatively interacts, valve seat adopts floating valve seat, and valve seat and valve body radially adopt O type rubber seal rings for seal.Its major defect is that O type rubber seal is lost sealing function by burning when fiery carrying occurs pipeline internal medium, and ball valve was lost efficacy, and its fireproof performance is poor.
Summary of the invention
The purpose of this utility model is the shortcoming that exists for prior art, and a kind of fire prevention fixing ball valve with fire-proof function is provided.
The technical solution of the utility model comprises valve body, valve seat, spheroid, valve rod, spheroid and valve seat have the sealing surface that cooperatively interacts, mounting spring between the valve seat back side and valve body are axial, valve seat and valve body radially arrange O type rubber seal, mainly, between spring and valve seat back side first step, metallic support pad and plastic barrier pad are set, V-type Expanded graphite fire-protection ring is installed between valve seat back side second step and valve body, and the upper lateral end face of metallic support pad is shaped with the V-type convex surface that cooperatively interacts with V-type Expanded graphite fire-protection ring.
In above technological scheme, the table top of valve seat back side second step have and valve interior wall between acutangulate inclined-plane, V-type Expanded graphite fire-protection ring has with the inclined-plane of the table top equal angular of valve seat back side second step and cooperatively interacts.
In above technological scheme, the V-type interior angle of V-type Expanded graphite fire-protection ring is 60 °.
The utility model has the advantages that and be provided with the fire proof seal mechanism that is formed by V-type Expanded graphite fire-protection ring, metallic support pad, plastic barrier pad and spring between valve seat and valve body, when the pipeline breaking out of fire, the plastic barrier pad is melted, the metallic support pad compresses V-type Expanded graphite fire-protection ring under pressure medium and spring action, the V-type mouth of V-type Expanded graphite fire-protection ring is strutted, make its both sides of the edge and valve body, valve seat press seal, realize the fire proof seal function.
Description of drawings
Fig. 1 is structure sectional view of the present utility model.
Fig. 2 is the partial enlarged drawing at I place in the utility model Fig. 1.
Embodiment
Fire prevention fixing ball valve as shown in Figure 1, comprise valve body, valve seat 9, spheroid 7, valve rod 11, spheroid 7 has with valve seat 9 sealing surface that cooperatively interacts, mounting spring 10 between valve seat 9 back sides and valve body are axial, valve seat 9 radially arranges O type rubber seal 5 with valve body, and valve body adopts the three pieces type structure, formed by left valve barrel 6, middle valve body 1 and right valve barrel 13, spheroid 7 upper ends are fixedly connected with valve rod 11, and lower end is connected movingly with the gudgeon 2 on being fixed on middle valve body 1, and spring 10 adopts high temperature resistant spring.Between spring 10 and valve seat 9 back side first steps, metallic support pad 4 and plastic barrier pad 8 are set, V-type Expanded graphite fire-protection ring 3 is installed between valve seat 9 back side second steps and valve body, the upper lateral end face of metallic support pad 4 is shaped with the V-type convex surface that cooperatively interacts with V-type Expanded graphite fire-protection ring 3, when meeting fire, plastic barrier pad 8 is melted, and the V-type convex surface of metallic support pad 4 struts V-type Expanded graphite fire-protection ring 3 and valve body and valve seat 9 sealings.
The table top of valve seat 9 back side second steps have and valve interior wall between acutangulate inclined-plane, V-type Expanded graphite fire-protection ring 3 has with the inclined-plane of the table top equal angular of valve seat 9 back side second steps and cooperatively interacts, make the wedging sealing between valve body and valve seat 9 under pressure medium and spring 10 elastic force effects of V-type Expanded graphite fire-protection ring 3, as shown in Figure 2.
The V-type interior angle of V-type Expanded graphite fire-protection ring 3 is 60 °, and the drift angle of metallic support pad 4V type convex surface is fillet, also can adopt drift angle is polished processing, makes metallic support pad 4 effectively strut V-type Expanded graphite fire-protection ring 3, realizes the fire proof seal function.Valve rod 11 is arranged on middle valve body 1 by axle sleeve 12, and spring 10 adopts high temperature resistant Inconel X750 spring.
Claims (3)
- one kind the fire prevention fixing ball valve, comprise valve body, valve seat (9), spheroid (7), valve rod (11), spheroid (7) has with valve seat (9) sealing surface that cooperatively interacts, mounting spring (10) between valve seat (9) back side and valve body are axial, valve seat (9) radially arranges O type rubber seal (5) with valve body, it is characterized in that, between spring (10) and valve seat (9) back side first step, metallic support pad (4) and plastic barrier pad (8) are set, V-type Expanded graphite fire-protection ring (3) is installed between valve seat (9) back side second step and valve body, the upper lateral end face of metallic support pad (4) is shaped with the V-type convex surface that cooperatively interacts with V-type Expanded graphite fire-protection ring (3).
- 2. fire prevention fixing ball valve according to claim 1, the table top that it is characterized in that valve seat (9) back side second step have and valve interior wall between acutangulate inclined-plane, V-type Expanded graphite fire-protection ring (3) has with the inclined-plane of the table top equal angular of valve seat (9) back side second step and cooperatively interacts.
- 3. fire prevention fixing ball valve according to claim 1 and 2, the V-type interior angle that it is characterized in that V-type Expanded graphite fire-protection ring (3) is 60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203566394U CN203286038U (en) | 2013-06-05 | 2013-06-05 | Fireproof fixed ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203566394U CN203286038U (en) | 2013-06-05 | 2013-06-05 | Fireproof fixed ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203286038U true CN203286038U (en) | 2013-11-13 |
Family
ID=49542400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203566394U Expired - Fee Related CN203286038U (en) | 2013-06-05 | 2013-06-05 | Fireproof fixed ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203286038U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782480A (en) * | 2014-12-25 | 2016-07-20 | 浙江三花汽车零部件有限公司 | Two-way ball valve |
-
2013
- 2013-06-05 CN CN2013203566394U patent/CN203286038U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782480A (en) * | 2014-12-25 | 2016-07-20 | 浙江三花汽车零部件有限公司 | Two-way ball 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: 20131113 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |