CN205504062U - Ball valve fire resistive construction - Google Patents
Ball valve fire resistive construction Download PDFInfo
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- CN205504062U CN205504062U CN201620304181.1U CN201620304181U CN205504062U CN 205504062 U CN205504062 U CN 205504062U CN 201620304181 U CN201620304181 U CN 201620304181U CN 205504062 U CN205504062 U CN 205504062U
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- valve
- valve body
- spheroid
- fire
- flexible graphite
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Abstract
The utility model relates to a ball valve fire resistive construction, it includes valve body, disk seat, spheroid, valve rod, goes up the valve gap, valve gap and clamp plate down, the valve body endotheca is equipped with the spheroid the valve body is equipped with the disk seat with spheroidal contact department, be equipped with a runner on the spheroid, disk seat and valve body are corresponding be equipped with the opening on the position at runner both ends, valve rod and spheroid fixed connection, it runs through behind the valve rod and to be connected with the valve body upper end to go up the valve gap, the valve gap is connected with the valve body lower extreme down, the clamp plate sets up the upper end of going up the valve gap linking department of going up valve gap lateral wall and valve body upper end lateral wall is equipped with a flexible graphite gasket linking department of lower valve gap lateral wall and valve body lower extreme lateral wall is equipped with the 2nd flexible graphite gasket and guarantees the fire line between valve body and last valve gap, valve body and the lower valve gap through a flexible graphite gasket and the 2nd flexible graphite gasket, guarantees the safe operation of ball valve.
Description
Technical field
This utility model relates to a kind of valve, particularly to a kind of ball valve fire-proof structure.
Background technology
Ball valve, defined in standard GB/T21465-2008 " valve term " be: opening and closing element (spheroid) is driven by valve rod, and the valve rotated around ball valve axis.Also can be used for regulation and the control of fluid, the most firmly seal, between V-type ball valve its V-type core and metal seat valve of pile-up welding hard alloy, there is the strongest shearing force, be particularly well-suited to the medium of fibre-bearing, small solid material etc..And multi-pass ball valve not only can control the interflow of medium, shunting and the switching flowed on pipeline flexibly, also can close arbitrary passage simultaneously and make two other passage be connected.
Existing ball valve, mostly uses a kind of seal form, and fire prevention degree is the highest.
Utility model content
In order to overcome the deficiency of background technology, this utility model provides a kind of ball valve fire-proof structure.
This utility model be the technical scheme is that a kind of ball valve fire-proof structure, it includes valve body, valve seat, spheroid, valve rod, bonnet, bottom flange and pressing plate, spheroid it is arranged with in valve body, it is provided with valve seat in the contact position of described valve body Yu spheroid, described spheroid is provided with a runner, described valve seat and valve body are provided with opening on the position at corresponding described runner two ends, described valve rod is fixing with spheroid to be connected, described bonnet, is connected with valve body upper end after running through valve rod, described bottom flange is connected with valve body lower end, described pressing plate is arranged on the upper end of described bonnet, joining place at described bonnet, sidewall Yu valve body upper end sidewall is provided with the first flexible graphite gasket, joining place at described bottom flange sidewall Yu valve body lower end sidewall is provided with the second flexible graphite gasket.
Described pressing plate lower surface is provided with the 3rd flexible graphite gasket with the joining place of bonnet, upper surface.
Described pressing plate sidewall is provided with flexible graphite packing with the joining place of valve rod sidewall.
Described valve rod upper surface is provided with the 4th flexible graphite gasket with the joining place of bottom flange lower surface.
Described valve seat and valve body joining place are provided with soft graphite fire proof seal circle.
Described valve seat and spheroid joining place are provided with sealing mechanism.
It is provided with air tightness compensation arrangement between described valve seat and valve body.
Described air tightness compensation arrangement includes the groove being arranged on valve body and the helical spring being arranged on valve seat, and the open horizontal of described groove is arranged towards valve seat, and described helical spring is pressed in groove in advance.
The beneficial effects of the utility model are: this utility model ensures the fire line between valve body and bonnet, valve body and bottom flange by the first flexible graphite gasket and the second flexible graphite gasket, it is ensured that the safe operation of ball valve.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the enlarged drawing in Fig. 1 at A.
1-valve body, 11-groove, 2-valve seat, 21-soft graphite fire proof seal circle, 22-helical spring, 23-oiling passage, 231-first passage, 232-second channel, 3-spheroid, 4-valve rod, 41-the 4th flexible graphite gasket, 5-bonnet, 51-the first flexible graphite gasket, 6-bottom flange, 61-the second flexible graphite gasket, 7-pressing plate, 71-the 3rd flexible graphite gasket, 72-flexible graphite packing, 81-the first sealing ring, 82-the second sealing ring, 83-the first metal seal, 84-the second metal seal.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model embodiment is described further:
nullAs shown in the figure，A kind of ball valve fire-proof structure，It includes valve body 1、Valve seat 2、Spheroid 3、Valve rod 4、Bonnet, 5、Bottom flange 6 and pressing plate 7，Spheroid 3 it is arranged with in valve body 1，It is provided with valve seat 2 in the contact position of described valve body 1 with spheroid 3，Described spheroid 3 is provided with a runner，Described valve seat 2 and valve body 1 are provided with opening on the position at corresponding described runner two ends，Described valve rod 4 is fixing with spheroid 3 to be connected，Described bonnet, 5 is connected with valve body 1 upper end after running through valve rod 4，Described bottom flange 6 is connected with valve body 1 lower end，Described pressing plate 7 is arranged on the upper end of described bonnet, 5，Joining place at described bonnet, 5 sidewall Yu valve body 1 upper end sidewall is provided with the first flexible graphite gasket 51，Joining place at described bottom flange 6 sidewall Yu valve body 1 lower end sidewall is provided with the second flexible graphite gasket 61，Valve body 1 and bonnet, 5 is ensured by the first flexible graphite gasket 51 and the second flexible graphite gasket 61、Fire line between valve body 1 and bottom flange 6，Ensure the safe operation of ball valve.
Pressing plate 7 is connected with bonnet, 5 by bolt, and described pressing plate 7 lower surface is provided with the 3rd flexible graphite gasket 71 with the joining place of bonnet, 5 upper surface, processes in order to the fire prevention of ball valve, arranges O RunddichtringO, in order to the encapsulation process of ball valve simultaneously.
Owing to each joining place may connect ball valve inside and air, described pressing plate 7 sidewall is provided with flexible graphite packing 72 with the joining place of valve rod 4 sidewall, described valve rod 4 upper surface is provided with the 4th flexible graphite gasket 41 with the joining place of bottom flange 6 lower surface, described valve seat 2 is provided with soft graphite fire proof seal circle 21 with valve body 1 joining place, all process in order to the fire prevention of ball valve, prevent outside burning things which may cause a fire disaster from damaging ball valve, simultaneously, O RunddichtringO may be also set up at each joining place, as encapsulation process, prevent ball valve from internal leakage.
nullDescribed valve seat 2 is provided with sealing mechanism with spheroid 3 joining place，Described sealing mechanism includes soft first sealing ring 81、Second sealing ring 82、First metal seal 83 and the second metal seal 84，Described first sealing ring 81 is embedded on valve seat 2，One end is exposed and is against spheroid 3 surface，Described second sealing ring 82 is close to the first sealing ring 82 and is embedded on valve seat 2，One end is exposed and is against spheroid 3 surface，Described first metal seal 83 is close to the first sealing ring 81 and is arranged on valve seat 2 surface，Described second metal seal 84 is close to the second sealing ring 42 and is arranged on valve seat 2 surface，Utilize the first sealing ring 81 and the second sealing ring 82 to carry out the soft seal under low temperature environment，Utilize the first metal seal 83 and the second metal seal 84 to the hard sealing carrying out under hot environment，Realize the soft or hard double containment of ball valve，Simultaneously，Owing to the first sealing ring 81 is fluorubber soft seal circle，Second sealing ring 82 is PTFE soft seal circle，At high temperature it is easily damaged，Therefore design the first sealing ring 81 and the second sealing ring 82 are positioned at the first metal seal 83 and centre of the second metal seal 84，The hard sealing utilizing metal protects soft seal not to be destroyed.
Described first metal seal the 83, second metal seal 84 all uses lip type cutting edge, lip type cutting edge is similar to the boss of a projection, contact with the direct of spheroid 3 relative to valve seat 2, lip type cutting edge is much smaller with the contact surface of spheroid 3, spheroid 3 surface is arc, and contact area is the least, and contact gap reduces, snugly can be the best, spheroid 3 moment of torsion in rotary course can reduce.
It is provided with air tightness compensation arrangement between described valve seat 2 and valve body 1, is used for compensating soft seal and hard sealing, makes the better tightness of ball valve.
Described air tightness compensation arrangement includes the groove 11 being arranged on valve body 1 and the helical spring 22 being arranged on valve seat 2, the open horizontal of described groove 11 is arranged towards valve seat 2, described helical spring 22 is pressed in groove 11 in advance, preload screw spring 22 acts on valve body 1 and valve seat 2, there is a precompressed elastic force, this precompressed elastic force is applied on valve seat 2, to 2 one power away from valve body 1 of valve seat, i.e. promote valve seat 2 to contact further with spheroid 3, make the better tightness of ball valve.
Described valve seat 2 is provided with oiling passage 23, described oiling passage includes first passage 231 and second channel 232, described first passage 231 one end connects air, and the other end connects with second channel 232, and described second channel 232 other end opening is positioned at the lower section of the second metal seal 84, and towards spheroid 3, utilize this oiling passage 23, can again ball valve leakage time, carry out emergency sealing, it is also used as oiling, carries out the lubrication on surface between valve seat 2 and valve body 1.
Being only preferred implementation of the present utility model above in association with the embodiment described by accompanying drawing, and not restriction to protection domain of the present utility model, any improvement done based on this utility model spirit all ought to be within this utility model protection domain.
Claims (8)
- null1. a ball valve fire-proof structure，It is characterized in that: it includes valve body (1)、Valve seat (2)、Spheroid (3)、Valve rod (4)、Bonnet, (5)、Bottom flange (6) and pressing plate (7)，Spheroid (3) it is arranged with in valve body (1)，It is provided with valve seat (2) in the contact position of described valve body (1) Yu spheroid (3)，Described spheroid (3) is provided with a runner，Described valve seat (2) and valve body (1) are provided with opening on the position at corresponding described runner two ends，It is characterized in that: described valve rod (4) is fixing with spheroid (3) to be connected，Described bonnet, (5) runs through valve rod (4) and is connected with valve body (1) upper end afterwards，Described bottom flange (6) is connected with valve body (1) lower end，Described pressing plate (7) is arranged on the upper end of described bonnet, (5)，Joining place at described bonnet, (5) sidewall Yu valve body (1) upper end sidewall is provided with the first flexible graphite gasket (51)，Joining place at described bottom flange (6) sidewall Yu valve body (1) lower end sidewall is provided with the second flexible graphite gasket (61).
- A kind of ball valve fire-proof structure the most according to claim 1, it is characterised in that: described pressing plate (7) lower surface is provided with the 3rd flexible graphite gasket (71) with the joining place of bonnet, (5) upper surface.
- A kind of ball valve fire-proof structure the most according to claim 1, it is characterised in that: described pressing plate (7) sidewall is provided with flexible graphite packing (72) with the joining place of valve rod (4) sidewall.
- A kind of ball valve fire-proof structure the most according to claim 1, it is characterised in that: described valve rod (4) upper surface is provided with the 4th flexible graphite gasket (41) with the joining place of bottom flange (6) lower surface.
- A kind of ball valve fire-proof structure the most according to claim 1, it is characterised in that: described valve seat (2) and valve body (1) joining place are provided with soft graphite fire proof seal circle (21).
- A kind of ball valve fire-proof structure the most according to claim 1, it is characterised in that: described valve seat (2) and spheroid (3) joining place are provided with sealing mechanism.
- A kind of ball valve fire-proof structure the most according to claim 6, it is characterised in that: it is provided with air tightness compensation arrangement between described valve seat (2) and valve body (1).
- A kind of ball valve fire-proof structure the most according to claim 7, it is characterized in that: described air tightness compensation arrangement includes the groove (11) being arranged on valve body (1) and the helical spring (22) being arranged on valve seat (2), the open horizontal of described groove (11) is arranged towards valve seat (2), and described helical spring (22) is pressed in groove (11) in advance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620304181.1U CN205504062U (en) | 2016-04-13 | 2016-04-13 | Ball valve fire resistive construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620304181.1U CN205504062U (en) | 2016-04-13 | 2016-04-13 | Ball valve fire resistive construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205504062U true CN205504062U (en) | 2016-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620304181.1U Active CN205504062U (en) | 2016-04-13 | 2016-04-13 | Ball valve fire resistive construction |
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| CN (1) | CN205504062U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246952A (en) * | 2016-08-29 | 2016-12-21 | 苏州工业园区思达德阀门有限公司 | New-type cast steel two-piece type soft seal fixing ball valve |
-
2016
- 2016-04-13 CN CN201620304181.1U patent/CN205504062U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246952A (en) * | 2016-08-29 | 2016-12-21 | 苏州工业园区思达德阀门有限公司 | New-type cast steel two-piece type soft seal fixing ball valve |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |