CN201715007U - Flameproof safe underground all-welded flat-plate gate valve - Google Patents
Flameproof safe underground all-welded flat-plate gate valve Download PDFInfo
- Publication number
- CN201715007U CN201715007U CN2010202564608U CN201020256460U CN201715007U CN 201715007 U CN201715007 U CN 201715007U CN 2010202564608 U CN2010202564608 U CN 2010202564608U CN 201020256460 U CN201020256460 U CN 201020256460U CN 201715007 U CN201715007 U CN 201715007U
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- valve
- valve body
- sealing
- output channel
- input channel
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Abstract
The utility model relates to a valve, in particular to a flameproof safe underground all-welded flat-plate gate valve which adopts the technical scheme that the flat-plate gate valve comprises a valve body, a valve cover, a valve stem, a gate and a valve seat, wherein the up and down movement of the valve stem drives the gate to move up and down; a driving device is used for driving the valve stem to move up and down; an O-shaped rubber sealing ring is respectively arranged between the valve seat and the valve body and between the valve stem and the valve cover for sealing; the valve body is welded together with the valve cover; an inlet end of an input channel and an outlet end of an output channel on the valve body are respectively provided with a welding structure for welding pipelines; and a flameproof sealing ring is also respectively arranged between the valve seat and the valve body and between the valve stem and the valve cover for sealing. By adopting the technical scheme, the utility model can completely block the fire source in case of accidental fires in the gas pipelines and can achieve the flameproof purpose.
Description
Technical field
The utility model relates to a kind of valve, and particularly a kind of fire safe buried all-welded type connects plate valve.
Background technique
Gas pipelines such as traditional transport gas, petroleum gas generally are assembled by parts such as valve body, valve seat, flashboard, valve rod, valve gap, drive units with buried plate valve, thereby drive the open and-shut mode that moves up and down control valve of flashboard by moving up and down of described valve rod, the employing flange gasket is connected between valve body and pipeline, valve body and the valve gap; O shape rubber seal is all adopted in sealing between sealing between valve seat and the valve body, valve rod and the valve gap.The problem that this structure exists on fuel gas pipelines such as rock gas, petroleum gas is: in case the pipe-line system a fire broke out by accident, this structure does not possess fire-proof function, flange gasket and O shape rubber seal meeting scaling loss, fire can spread to valve outside and pipe downstream underground pipelines entirely, can bring serious safety problem to gas-fired equipment system and people's lives and properties.Therefore society's urgent need is a kind of can block burning things which may cause a fire disaster fully when gas pipeline meets accident fire, reach the buried plate valve of fire safety purpose.
Summary of the invention
The purpose of this utility model: in order to overcome the defective of prior art, can block burning things which may cause a fire disaster fully when gas pipeline meets accident fire and provide a kind of, the fire safe buried all-welded type that reaches the fire safety purpose connects plate valve.
The technical solution of the utility model: the fire safe buried all-welded type connects plate valve, include valve body, valve gap, be provided with input channel and output channel in the described valve body for medium transmission, be provided with a valve pocket between described input channel and the output channel, being provided with a control valve in the described valve pocket opens and closed flashboard, be equipped with a valve seat between described valve pocket and described input channel and the output channel, also comprise a valve rod that is linked with described flashboard, driving flashboard by moving up and down of described valve rod moves up and down and is used for the drive unit that actuate valve stem moves up and down, sealing between described valve seat and the valve body, sealing between described valve rod and the described valve gap is equipped with O shape rubber seal, described valve body and valve gap are through being welded as a whole, the entrance point of described input channel and the outlet end of output channel are provided with the welded structure that can supply with pipeline welding, the sealing between described valve seat and the valve body, sealing between described valve rod and the described valve gap also is provided with the fire proof seal circle.
Further improvement of the utility model: described welded structure is for being provided with the groove that can supply with pipeline welding at the entrance point of described input channel and the outlet end of output channel.
Effect of the present utility model: because valve body and valve gap are through being welded as a whole, the entrance point of described input channel and the outlet end of output channel are provided with the welded structure that can supply with pipeline welding, sealing between sealing between described valve seat and the valve body, described valve rod and the described valve gap also is provided with the fire proof seal circle, so not only reduced the weight of valve, exempted long-term maintenance cost, the more important thing is that can thoroughly eliminate fire spreads outside valve He outside the pipeline, hidden danger that medium is revealed outward and fire proof seal circle can play the double seal effect; The entrance point of described input channel and the outlet end of output channel are provided with and can make welding more reliable for the groove setting with pipeline welding.
Description of drawings
Fig. 1 is the utility model embodiment's a structural representation
Fig. 2 is the partial enlarged drawing of I part among Fig. 1
Embodiment
As described in Figure 1, the fire safe buried all-welded type connects plate valve, include valve body 1, valve gap 7, be provided with input channel and output channel in the described valve body 1 for medium transmission, being provided with a control valve between described input channel and the output channel opens and closed flashboard 2, described flashboard is provided with a through hole 21 of crossing for MEDIA FLOW, and when valve is in when closing, described through hole 21 is isolated with input channel and output channel; When valve is in when opening, described through hole 21 communicates with input channel and output channel.Be equipped with a valve seat 3 between described flashboard 2 and described input channel and the output channel, also comprise a valve rod 8 that is linked with described flashboard 2, in this specific embodiment, flashboard 2 upper ends are provided with a groove for valve rod 8 insertions, described groove inwall is provided with screw thread, and described valve rod 8 is provided with the outside thread that is complementary with the groove internal thread and constitutes being linked of described flashboard 2 and valve rod 8.Also comprise and be used to control the drive unit that valve rod moves up and down, what this specific embodiment adopted is handwheel 11, described valve seat 3 is provided with O shape rubber seal 4 and fire proof seal circle with valve body 1, also be provided with O shape rubber seal 9 and fire proof seal circle between described valve rod 8 and the described valve gap 7, can not only play flameproof effect like this, can also increase double seal, described fire proof seal circle can adopt silica gel sealing ring, the fiberglass sealed circle, Expanded graphite seal ring etc., in order to save cost, the fire proof seal circle that this specific embodiment adopts is the Expanded graphite seal ring, be that fire proof seal circle between valve seat 3 and the valve body 1 is an Expanded graphite seal ring 5, the fire proof seal circle between valve rod 8 and the described valve gap 7 is an Expanded graphite seal ring 10.In this specific embodiment with valve body 1 and valve gap 7 through being welded as a whole, measure in order to reduce long-pending the applying of groove section significantly with filling out of weld metal, welding efficiency is provided, valve body 1 that adopts in this specific embodiment and the narrow gap U weld seam welding of being welded as of valve gap 7, valve body and valve gap are weld seam 6 through the welding of narrow gap U weld seam as shown in Figure 2, the entrance point of described input channel and the outlet end of output channel are provided with the welded structure that can supply with pipeline welding, because the pipe diameter of described input channel and output channel is bigger, therefore the input channel that adopts in this specific embodiment and output channel and pipeline welding is welded as butt welding, in order to make welding reliable, the entrance point of described input channel and the outlet end of output channel are provided with the groove that can supply with pipeline welding, the setting of this groove is provided with according to the butt welding welding requirements of NBS, so not only alleviated the weight of valve, can also prevent well that medium from leaking, fire outside valve and pipeline spread.
Working principle of the present utility model: when opening valve, rotation hand wheel 11 rises thereby drive valve rod 8, and this moment, the through hole of described flashboard 2 communicated with described input channel and output channel, and medium can flow through from input channel and output channel; When throttle down, counterrotating handwheel 11, this moment, the through hole of described flashboard 2 was isolated with described input channel and output channel, the circulation of blocking-up medium.If breaking out of fire, can close valve, thereby cutting off burning things which may cause a fire disaster spreads outside passage, simultaneously since valve body 1 and valve gap 7 through being welded as a whole, described input channel and output channel and pipeline welding are one, burning things which may cause a fire disaster is not outwards spread, though described valve seat 3 and valve body 1, O shape rubber seal between described valve rod 8 and the described valve gap 7 can be burnt out, but the Expanded graphite seal ring has high fire performance, can bear the fire protection flame retarding effect, can prevent effectively that medium is from valve seat 3 and valve body 1, reveal between valve rod 8 and the valve gap 7, block burning things which may cause a fire disaster realization frpf purpose fully thereby reach.
Claims (2)
1. the fire safe buried all-welded type connects plate valve, include valve body, valve gap, be provided with input channel and output channel in the described valve body for medium transmission, be provided with a valve pocket between described input channel and the output channel, being provided with a control valve in the described valve pocket opens and closed flashboard, be equipped with a valve seat between described valve pocket and described input channel and the output channel, also comprise a valve rod that is linked with described flashboard, driving flashboard by moving up and down of described valve rod moves up and down and is used for the drive unit that actuate valve stem moves up and down, sealing between described valve seat and the valve body, sealing between described valve rod and the described valve gap is equipped with O shape rubber seal, it is characterized in that: described valve body and valve gap are through being welded as a whole, the entrance point of described input channel and the outlet end of output channel are provided with the welded structure that can supply with pipeline welding, the sealing between described valve seat and the valve body, sealing between described valve rod and the described valve gap also is provided with the fire proof seal circle.
2. fire safe buried all-welded type according to claim 1 connects plate valve, it is characterized in that: described welded structure is for being provided with the groove that can supply with pipeline welding at the entrance point of input channel and the outlet end of output channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202564608U CN201715007U (en) | 2010-07-07 | 2010-07-07 | Flameproof safe underground all-welded flat-plate gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202564608U CN201715007U (en) | 2010-07-07 | 2010-07-07 | Flameproof safe underground all-welded flat-plate gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201715007U true CN201715007U (en) | 2011-01-19 |
Family
ID=43461003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202564608U Expired - Lifetime CN201715007U (en) | 2010-07-07 | 2010-07-07 | Flameproof safe underground all-welded flat-plate gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201715007U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630796A (en) * | 2019-10-23 | 2019-12-31 | 浙江伯特利科技有限公司 | All-welded stop valve and assembling/welding process and tool thereof |
| RU195020U1 (en) * | 2019-09-14 | 2020-01-13 | Общество с ограниченной ответственностью "Армтехстрой" | GATE VALVE |
| CN110715095A (en) * | 2019-10-23 | 2020-01-21 | 浙江伯特利科技有限公司 | All-welded gate valve and assembling/welding process and tool thereof |
-
2010
- 2010-07-07 CN CN2010202564608U patent/CN201715007U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU195020U1 (en) * | 2019-09-14 | 2020-01-13 | Общество с ограниченной ответственностью "Армтехстрой" | GATE VALVE |
| CN110630796A (en) * | 2019-10-23 | 2019-12-31 | 浙江伯特利科技有限公司 | All-welded stop valve and assembling/welding process and tool thereof |
| CN110715095A (en) * | 2019-10-23 | 2020-01-21 | 浙江伯特利科技有限公司 | All-welded gate valve and assembling/welding process and tool thereof |
| CN110715095B (en) * | 2019-10-23 | 2023-08-22 | 浙江伯特利科技股份有限公司 | All-welded gate valve and assembling/welding process and tool thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110119 |