CN202927097U - Combined sealed sand control gate valve - Google Patents
Combined sealed sand control gate valve Download PDFInfo
- Publication number
- CN202927097U CN202927097U CN 201220651634 CN201220651634U CN202927097U CN 202927097 U CN202927097 U CN 202927097U CN 201220651634 CN201220651634 CN 201220651634 CN 201220651634 U CN201220651634 U CN 201220651634U CN 202927097 U CN202927097 U CN 202927097U
- Authority
- CN
- China
- Prior art keywords
- valve seat
- valve
- ring
- sand control
- type circle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model relates to a combined sealed sand control gate valve, which comprises a valve body, wherein a combined valve seat is arranged on the valve body, and a sealed O-shaped ring is arranged between the combined valve seat and a valve plate; the upper end of the valve plate is connected with a valve stem, and the valve stem is connected with a stuffing box; a stuffing component is arranged in the stuffing box, and a valve cover is arranged at the upper part of the stuffing box; and a valve stem nut is arranged in the valve cover, and the combined valve seat comprises a valve seat outer ring, a valve seat inner ring, a positioning retaining ring, a valve seat end O-shaped ring, a valve seat radial O-shaped ring and a graphite ring. Attachments on a gate plate can be cleaned by the sealed O-shaped ring contained in the combined valve seat in the opening and closing process of the gate plate, the axial height difference between the valve seat outer ring and the valve seat inner ring can form scraper action, the valve seat end O-shaped ring provides an adequate pretightening force, the cooperation between a lug boss of the valve seat inner ring and the valve body, and the valve seat radial O-shaped ring and the graphite ring can effectively prevent sand from entering the space at the back of the valve seat, so that the gate valve is flexibly turned on or off and is reliably sealed when being used for a long time under a high-sand-content natural gas working condition, and the industrial production is realized.
Description
Technical field
The utility model relates to a kind of high pressure combination seal sand control structure gate valve for the higher natural gas extraction well head use of sand content, is mainly used in the industries such as rock gas.
Background technique
At present, the high pressure sluice valve that known natural gas extraction well head uses is the plate valve of Single disc double-valve-seat, and valve seat and flashboard sealing surface multiselect are with chemical nickel plating or coated with hard alloy structure, and some inlays RPTFE or PPL on sealing surface of seat.For containing the sand rock gas, there is following shortcoming in the gate valve of this structure:
1) switch moment is large, the operation effort.
2) the valve seat back side is easily filled by fine sand, forms the valve seat jam, seal failure.
3) sealing pair shows easy scuffing, and valve seal is revealed.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, this the purpose of this utility model is to provide a kind of combination seal sand control structure gate valve, employing combined valve seat and sand control structural design reach and use for a long time the purpose that switch is flexible, seal reliably and realize industrialized production under the higher rock gas operating modes of sand content.
To achieve these goals, the technical solution adopted in the utility model is: a kind of combination seal sand control structure gate valve, include by valve body, valve body is provided with stack valve seat, be provided with sealing O type circle between stack valve seat and valve plate, the upper end of valve plate is connected with valve rod, valve rod is connected with Stuffing box, be provided with filler assembly in Stuffing box, be provided with valve gap on Stuffing box top, be provided with Stem Mut in valve gap, wherein radially O type circle and graphite annulus consist of stack valve seat by ring, baffle ring, valve seat end, location O type circle, valve seat in valve seat outer shroud, valve seat.Form stack valve seat by structural design, the flashboard sealing surface is realized soft, hard Composite Double resealing, between ring and valve flowing channel, the sand control boss is arranged in valve seat, prevents the valve seat jam.
Be provided with valve seat end O type circle, valve seat radially O type circle, graphite annulus between described stack valve seat and valve body, seal.
Described sealing O type circle requires to have the high hardness of 95 ℃ of left and right of Shao Er A type.
In described valve seat outer shroud, valve seat, ring connects by the location baffle ring, and formation will seal O type circle sealing annular tank wherein.
The sealing surface silicon carbide of ring and flashboard in described valve seat outer shroud, valve seat.
In described valve seat outer shroud and valve seat, the sealing surface of ring is in the height difference that 0.15-0.3mm is axially arranged.
In described valve seat, the ring back side is provided with boss, and formation coordinates with valve flowing channel.
Advantage of the present utility model and effect are as follows:
1) because ring in valve seat outer shroud, valve seat is fixed the rear tank that forms sealing O type circle by the location ring washer, sealing O type circle and hard alloy surface play seal action simultaneously, seal more reliable.
2) use sealing O type circle can play the effect of strike-ofing, the attachment on the cleaning flashboard reduces operational torque, makes switch flexible.
3) in valve seat, the boss structure of ring can prevent that fine sand from entering the space at the valve seat back side, prevents the valve seat jam.
4) radially O type circle, graphite annulus play the effect of fire prevention, sand control and effective sealing simultaneously to be used in combination valve seat end O type circle, valve seat.
Description of drawings
Fig. 1 is combination seal sand control structure gate valve structural representation of the present utility model.
Fig. 2 is the supplementing structure schematic diagram of combination seal sand control structure gate valve of the present utility model, is also the partial view of Fig. 1.
In figure: 1-valve body, 2-stack valve seat, 3-sealing O type circle, 4-flashboard, 5-valve rod, 6-valve seat outer shroud, ring in the 7-valve seat, 8-locates baffle ring, 9-valve seat end O type circle, the 10-valve seat is O type circle radially, the 11-graphite annulus, 12-Stuffing box, 13-filler assembly, 14-valve gap, 15-Stem Mut.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Referring to seeing Fig. 1,2, a kind of combination seal sand control structure gate valve, include by valve body 1, valve body 1 is provided with stack valve seat 2, be provided with sealing O type circle 3 between stack valve seat 2 and valve plate 4, the upper end of valve plate 4 is connected with valve rod 5, valve rod 5 is connected with Stuffing box 12, be provided with filler assembly 13 in Stuffing box 12, be provided with valve gap 14 on Stuffing box 12 tops, be provided with Stem Mut 15 in valve gap 14, wherein stack valve seat 2 by encircle 7 in valve seat outer shroud 6, valve seat, location baffle ring 8, valve seat end O type circle 9, radially O type circle 10, graphite annulus 11 consist of valve seat.Form stack valve seat by structural design, the flashboard sealing surface is realized soft, hard Composite Double resealing, between ring and valve flowing channel, the sand control boss is arranged in valve seat, prevents the valve seat jam.
Be provided with valve seat end O type circle 9, valve seat radially O type circle 10, graphite annulus 11 between described stack valve seat 2 and valve body 1, seal.
Described sealing O type circle 3 requires to have the high hardness of 95 ℃ of left and right of Shao Er A type.
In described valve seat outer shroud 6, valve seat, ring 7 connects by location baffle ring 8, and formation will seal O type circle 3 sealings annular tank wherein.
The sealing surface silicon carbide of ring 7 and flashboard 4 in described valve seat outer shroud 6, valve seat.
In described valve seat outer shroud 6 and valve seat, the sealing surface of ring 7 is in the height difference that 0.15-0.3mm is axially arranged.
In described valve seat, ring 7 back sides are provided with boss, and formation coordinates with valve flowing channel.
In valve seat outer shroud, valve seat, ring is by the fixing rear tank that forms sealing O type circle of location ring washer; make stack valve seat and flashboard sealing surface realize soft, hard Composite Double resealing, and the attachment on can self cleaning flashboard sealing surface, the protection sealing surface is impaired; reduce operational torque, extend life of valve.Between ring and valve flowing channel, the sand control boss is arranged in valve seat, prevent the valve seat jam.Valve seat end O type circle, valve seat radially O type circle, graphite annulus are used in combination and realize fire prevention, sand control and pre-tightening seal, effectively guarantee the piston action of valve seat.
Working principle: the flashboard sealing O type circle that stack valve seat contains in the process of opening and closing can clean the attachment on flashboard.In valve seat outer shroud and valve seat, ring can form the scraper effect in axial height difference, with most fine sand isolation, avoids entering sealing surface.Valve seat end O type circle provides enough pretightening forces, realizes the sealing of the valve seat back side and valve body and the soft or hard compound seal of stack valve seat and flashboard.In valve seat between ring boss and valve body coordinate and valve seat radially O type circle, graphite annulus prevent that effectively sand from entering the valve seat rear space, plays the sand control effect.
The above is only preferred implementation of the present utility model, it is to be noted, for a person skilled in the art, can also make a lot of modification and improvement according to invention spirit of the present utility model and principle, as: sealing surface carries out other forms of cure process, ring in valve seat outer shroud and valve seat is changed into be connected in the axis hole position etc.But these modification and improvement all belong to the scope of the claims that the utility model is applied for.
Claims (7)
1. combination seal sand control structure gate valve, include by valve body (1), it is characterized in that, valve body (1) is provided with stack valve seat (2), be provided with sealing O type circle (3) between stack valve seat (2) and valve plate (4), the upper end of valve plate (4) is connected with valve rod (5), valve rod (5) is connected with Stuffing box (12), be provided with filler assembly (13) in Stuffing box (12), be provided with valve gap (14) on Stuffing box (12) top, be provided with Stem Mut (15) in valve gap (14), wherein stack valve seat (2) is by valve seat outer shroud (6), ring (7) in valve seat, location baffle ring (8), valve seat end O type circle (9), valve seat is O type circle (10) and graphite annulus (11) formation radially.
2. a kind of combination seal sand control structure gate valve according to claim 1, is characterized in that, is provided with valve seat end O type circle (9), valve seat radially O type circle (10), graphite annulus (11) between described stack valve seat (2) and valve body (1), seals.
3. a kind of combination seal sand control structure gate valve according to claim 1, is characterized in that, described sealing O type circle (3) requires to have the high hardness of 95 ℃ of left and right of Shao Er A type.
4. a kind of combination seal sand control structure gate valve according to claim 1, is characterized in that, in described valve seat outer shroud (6), valve seat, ring (7) connects by location baffle ring (8), and formation will seal O type circle (3) sealing annular tank wherein.
5. a kind of combination seal sand control structure gate valve according to claim 1, is characterized in that, the sealing surface silicon carbide of ring (7) and flashboard (4) in described valve seat outer shroud (6), valve seat.
6. a kind of combination seal sand control structure gate valve according to claim 1, is characterized in that, in described valve seat outer shroud (6) and valve seat, the sealing surface of ring (7) is in the height difference that 0.15-0.3mm is axially arranged.
7. a kind of combination seal sand control structure gate valve according to claim 1, is characterized in that, in described valve seat, ring (7) back side is provided with boss, and formation coordinates with valve flowing channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220651634 CN202927097U (en) | 2012-12-03 | 2012-12-03 | Combined sealed sand control gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220651634 CN202927097U (en) | 2012-12-03 | 2012-12-03 | Combined sealed sand control gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202927097U true CN202927097U (en) | 2013-05-08 |
Family
ID=48217057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220651634 Expired - Lifetime CN202927097U (en) | 2012-12-03 | 2012-12-03 | Combined sealed sand control gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202927097U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116498760A (en) * | 2023-06-26 | 2023-07-28 | 什邡慧丰采油机械有限责任公司 | Flat valve with combined double-valve-seat precise sealing structure and working method |
-
2012
- 2012-12-03 CN CN 201220651634 patent/CN202927097U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116498760A (en) * | 2023-06-26 | 2023-07-28 | 什邡慧丰采油机械有限责任公司 | Flat valve with combined double-valve-seat precise sealing structure and working method |
| CN116498760B (en) * | 2023-06-26 | 2023-08-22 | 什邡慧丰采油机械有限责任公司 | Flat valve with combined double-valve-seat precise sealing structure and working method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201615239U (en) | Pressure balancing plug valve | |
| CN201250924Y (en) | High-pressure and ultra-low temperature four-way ball valve | |
| CN101718345B (en) | Threaded stop valve | |
| CN202927097U (en) | Combined sealed sand control gate valve | |
| CN202195103U (en) | Ball valve of metal hard sealing body valve seat | |
| CN106051192B (en) | A kind of anti-settling sand flat gate valve | |
| CN200940702Y (en) | Metal hard seal ball valve | |
| CN203548966U (en) | Sand-preventing fracture gate valve | |
| CN204755985U (en) | Wear resistant ball valve | |
| CN204164393U (en) | A kind of hydraulic sluice valve | |
| CN205908772U (en) | Prevent sand setting plate valve | |
| CN204828748U (en) | Three formula pottery ball valves | |
| CN203784319U (en) | Self-sealing pressure stop valve | |
| CN201795063U (en) | Anti-rotation structure of stop valve | |
| CN206419499U (en) | A kind of U-shaped graphite combined sealing structure of high-temperature metal | |
| CN201858378U (en) | Metal seal mud valve | |
| CN202302015U (en) | Valve plate with high strength | |
| CN205001541U (en) | Wear -resisting valve of penetration flashboard | |
| CN203717950U (en) | Low-temperature high-pressure stop valve | |
| CN201836422U (en) | Prop open type sealed flat gate valve | |
| CN104265941A (en) | Metal hard sealing plug valve with filter screen | |
| CN203215265U (en) | Low-fluid resistance drain valve | |
| CN101509558B (en) | Hammer beating type stop valve | |
| CN108561099A (en) | A kind of high-pressure well mouth liquid-operated flat valve | |
| CN202327198U (en) | Floating ball valve |
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: 20130508 |