CN205780996U - A kind of metal seal ball valve - Google Patents
A kind of metal seal ball valve Download PDFInfo
- Publication number
- CN205780996U CN205780996U CN201620490037.1U CN201620490037U CN205780996U CN 205780996 U CN205780996 U CN 205780996U CN 201620490037 U CN201620490037 U CN 201620490037U CN 205780996 U CN205780996 U CN 205780996U
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- valve
- valve seat
- core
- flap
- runner
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Abstract
The utility model discloses a kind of metal seal ball valve, including a core, one valve seat, described valve seat is movably set in outside described core, a runner it is provided with in described core, described valve seat is provided with opening on the position at corresponding described runner two ends, described opening docks a upstream line and a downstream line respectively, described core is for rotating the connected state making the two ends of described runner connect with described upstream line and described downstream line or not connecting to switch described upstream line with described downstream line in described valve seat, drive above the core of described valve seat place and set a upper sealing valve flap and lower sealing valve flap with lower section respectively；A valve rod being rotatably connected with core is worn on described upper sealing valve flap；Adding the parts with telescopicing performance in original valve ball path both sides, can effectively alleviate valve ball expansion at high temperature under high pressure, the equipment caused uses illusive possibility, can be effectively increased the service life of equipment and reduce maintenance and the replacement frequency of parts.
Description
Technical field
This utility model relates to a kind of ball valve, particularly relates to a kind of metal hard-sealing ball valve.
Background technology
At present, ball valve can be applicable to the industry that pipeline medium temperature is relatively low and pressure is higher.Ball valve is made up of valve portion parts, drive mechanism and related accessories.Typically, by soft valve seat to the spool of ball valve and upstream, downstream pipeline between connection seal.But, the ball valve of prior art there is a disadvantage in that owing to existing cryogenic ball valve mainly uses the structure of soft valve seat, under some specific temperature and pressure rating conditions, can lose original sealing effectiveness, and service life is the shortest, the problem eventually producing valve leak.
Metal hard-sealing ball valve is commonly used to worst hot case, and material thermal expansion at high temperature is that metal hard-sealing ball valve designs the problem that must take into.Sealing between valve seat and the valve body of high-temperature metal hard-sealed ball valve generally uses soft graphite, the materials such as soft graphite at high temperature can produce volumetric expansion, as fruit structure is designed without considering material expansion compensation at high temperature, valve at high temperature will necessarily be stuck and akinesia because of the expansion of material.
Utility model content
For above-mentioned produced problem, this utility model provides a kind of simple in construction, solution ball valve body reasonable in design, easy for installation, effective amasss expansion and causes the awkward phenomenon of equipment.
A kind of metal seal ball valve, including a core, one valve seat, described valve seat is movably set in outside described core, a runner it is provided with in described core, described valve seat is provided with opening on the position at corresponding described runner two ends, described opening docks a upstream line and a downstream line respectively, described core is for rotating the connected state making the two ends of described runner connect with described upstream line and described downstream line or not connecting to switch described upstream line with described downstream line in described valve seat, drive above the core of described valve seat place and set a upper sealing valve flap and lower sealing valve flap with lower section respectively；A valve rod being rotatably connected with core is worn on described upper sealing valve flap；Being additionally provided with core seal valve seat in described valve seat, described core seal valve seat is located on the periphery of the described opening side relative with described core, is provided with elastomeric seal portions between described core seal valve seat and valve seat；Described upper sealing valve flap includes upper valve base cancelling block and valve stem sleeve, is provided with the draw-in groove being engaged with valve seat, and is connected with valve seat by bolt bottom described upper valve base cancelling block；Described valve stem sleeve is connected with upper valve base cancelling block, valve seat respectively by bolt；It is provided with filler briquetting and gland on described valve rod base lid.
Described core seal valve seat and valve seat junction are provided with annular outer step, and the valve seat relative with outer step is provided with step in annular；Described elastomeric seal portions is arranged between outer step and interior step.
Described elastomeric seal portions includes two sealing rings and an elastic pressuring spring, and described elastic pressuring spring is arranged at interior step side, and described elastic packing ring cross-section is trapezium structure, and two sealing rings agree with and are arranged at outer step, and offsets setting with elastic pressuring spring.
Described lower sealing valve flap includes lower valve base cancelling block and core locating shaft block；Described lower valve base cancelling block is provided with valve seat contact position and is engaged draw-in groove, and is connected with valve seat by bolt.
Compared with prior art, have the beneficial effect that and add the parts with telescopicing performance in original valve ball path both sides, can effectively alleviate valve ball expansion at high temperature under high pressure, the equipment caused uses illusive possibility, can be effectively increased the service life of equipment and reduce maintenance and the replacement frequency of parts.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation；
Fig. 2 is enlarged diagram at this utility model A.
Detailed description of the invention
It is illustrated in figure 1 a kind of embodiment of this utility model metal seal ball valve, including a core 1, one valve seat 2, described valve seat is movably set in outside described core, a runner it is provided with in described core, described valve seat is provided with opening on the position at corresponding described runner two ends, described opening docks a upstream line and a downstream line respectively, described core is for rotating the connected state making the two ends of described runner connect with described upstream line and described downstream line or not connecting to switch described upstream line with described downstream line in described valve seat, drive above the core of described valve seat place and set a upper sealing valve flap and lower sealing valve flap with lower section respectively；A valve rod 3 being rotatably connected with core is worn on described upper sealing valve flap；Core seal valve seat 4 it is additionally provided with in described valve seat, described core seal valve seat is located on the periphery of the described opening side relative with described core, it is provided with elastomeric seal portions 5 between described core seal valve seat and valve seat, described core seal valve seat and valve seat junction are provided with annular outer step 6, and the valve seat relative with outer step is provided with step 7 in annular；Described elastomeric seal portions is arranged between outer step and interior step, elastomeric seal portions includes two sealing rings 8 and an elastic pressuring spring 9, described elastic pressuring spring is arranged at interior step side, described elastic packing ring cross-section is trapezium structure, two sealing rings agree with and are arranged at outer step, and offset setting with elastic pressuring spring；Described upper sealing valve flap includes upper valve base cancelling block 10 and valve stem sleeve 11, is provided with the draw-in groove 12 being engaged with valve seat, and is connected with valve seat by bolt bottom described upper valve base cancelling block；Described valve stem sleeve is connected with upper valve base cancelling block, valve seat respectively by bolt；Filler briquetting 13 and gland 14 it is provided with on described valve rod base lid；Lower sealing valve flap includes lower valve base cancelling block 15 and core locating shaft block 16；Described lower valve base cancelling block is provided with valve seat contact position and is engaged draw-in groove, and is connected with valve seat by bolt.
Claims (4)
1. a metal seal ball valve, including a core, one valve seat, described valve seat is movably set in outside described core, a runner it is provided with in described core, described valve seat is provided with opening on the position at corresponding described runner two ends, described opening docks a upstream line and a downstream line respectively, described core is for rotating the connected state making the two ends of described runner connect with described upstream line and described downstream line or not connecting to switch described upstream line with described downstream line in described valve seat, it is characterized in that: drive above the core of described valve seat place and set a upper sealing valve flap and lower sealing valve flap with lower section respectively；A valve rod being rotatably connected with core is worn on described upper sealing valve flap；Being additionally provided with core seal valve seat in described valve seat, described core seal valve seat is located on the periphery of the described opening side relative with described core, is provided with elastomeric seal portions between described core seal valve seat and valve seat；Described upper sealing valve flap includes upper valve base cancelling block and valve stem sleeve, is provided with the draw-in groove being engaged with valve seat, and is connected with valve seat by bolt bottom described upper valve base cancelling block；Described valve stem sleeve is connected with upper valve base cancelling block, valve seat respectively by bolt；It is provided with filler briquetting and gland on described valve rod base lid.
2. metal seal ball valve as claimed in claim 1, it is characterised in that: described core seal valve seat and valve seat junction are provided with annular outer step, and the valve seat relative with outer step is provided with step in annular；Described elastomeric seal portions is arranged between outer step and interior step.
3. metal seal ball valve as claimed in claim 2, it is characterized in that: described elastomeric seal portions includes two sealing rings and an elastic pressuring spring, described elastic pressuring spring is arranged at interior step side, described elastic packing ring cross-section is trapezium structure, two sealing rings agree with and are arranged at outer step, and offset setting with elastic pressuring spring.
4. metal seal ball valve as claimed in claim 1, it is characterised in that: described lower sealing valve flap includes lower valve base cancelling block and core locating shaft block；Described lower valve base cancelling block is provided with valve seat contact position and is engaged draw-in groove, and is connected with valve seat by bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620490037.1U CN205780996U (en) | 2016-05-26 | 2016-05-26 | A kind of metal seal ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620490037.1U CN205780996U (en) | 2016-05-26 | 2016-05-26 | A kind of metal seal ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205780996U true CN205780996U (en) | 2016-12-07 |
Family
ID=58110177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620490037.1U Active CN205780996U (en) | 2016-05-26 | 2016-05-26 | A kind of metal seal ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205780996U (en) |
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2016
- 2016-05-26 CN CN201620490037.1U patent/CN205780996U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |