CN101929554B - Improved flat gate valve - Google Patents
Improved flat gate valve Download PDFInfo
- Publication number
- CN101929554B CN101929554B CN2010102477106A CN201010247710A CN101929554B CN 101929554 B CN101929554 B CN 101929554B CN 2010102477106 A CN2010102477106 A CN 2010102477106A CN 201010247710 A CN201010247710 A CN 201010247710A CN 101929554 B CN101929554 B CN 101929554B
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- China
- Prior art keywords
- valve
- flashboard
- valve body
- valve seat
- seat
- 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.)
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- 239000000463 material Substances 0.000 abstract description 8
- 238000005507 spraying Methods 0.000 abstract description 8
- 238000000227 grinding Methods 0.000 abstract description 7
- 239000000956 alloy Substances 0.000 abstract description 6
- 229910045601 alloy Inorganic materials 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 abstract description 4
- 229910003460 diamond Inorganic materials 0.000 abstract description 3
- 239000010432 diamond Substances 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 239000008187 granular material Substances 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 22
- 238000010276 construction Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 239000012535 impurity Substances 0.000 description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 4
- 229910052721 tungsten Inorganic materials 0.000 description 4
- 239000010937 tungsten Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 230000008685 targeting Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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- Lift Valve (AREA)
Abstract
The invention relates to the field of flat gate valves, in particular to an improved flat gate valve. A valve seat is placed in a valve body; a valve plate is tightly matched with the valve seat; one end of a valve rod is connected with a gate plate, and other end of the valve rod is connected with an operating mechanism; a valve cover is fixedly connected with the valve body; the bottom of the cavity of the valve body is provided with a drain hole; tungsten carbide alloy protrusions are sprayed on sealed areas or/and guide areas on two sides of the gate plate; the appearance of the gate plate is an automatic positioning and guide structure; and the bottom end part of the gate plate is provided with an arc groove structure. The improved flat gate valve has the advantages that: a real hard sealed flat gate valve is realized through the tungsten carbide protrusions and can resist abrasion, scratch and scour of all granules except diamond, and the service life of the valve is prolonged. Compared with total spraying, the spraying cost is saved by 75 percent. Because the whole convex surface is made of a material (tungsten carbide), the grinding process becomes easier compared with a large plane inlaid by two materials.
Description
[technical field]
The present invention relates to the plate valve technical field, specifically a kind of modified model plate valve.
[background technique]
Existing plate valve comprises valve body, valve seat, valve rod, flashboard, valve gap and operating device; Said valve seat places in the valve body, and said flashboard and valve seat be snug fit mutually, and said valve rod one end is connected with flashboard; Its other end links to each other with operating device, and said valve gap and valve body are fixedly connected.When flashboard is partly opened, valve seat and flashboard will bear the brute force of high pressure throttling medium and wash away.If adopt existing soft sealing structure, the soft sealing material part of valve seat is exposed in the medium and is washed away pit by medium rapidly, make valve opening once the back sealability promptly lost efficacy.In addition, existing flashboard and valve seat wash away down in the brute force of bearing high pressure throttling medium, also are easy to wearing and tearing, thereby cause the valve seal performance to reduce defectives such as shortening in working life.
In addition; Existing plate valve is not provided with the valve seat dustproof construction; Following defective will occur: the fine impurities in the medium can get into valve seat bottom, causes spring failure and makes valve leak, and valve operation moment is strengthened along with the increase of impurity gradually; Valve can not normally be opened and closed, can not realize the DBB function.
[summary of the invention]
The object of the invention is exactly will solve above-mentioned deficiency and a kind of modified model plate valve is provided.
For realizing that above-mentioned purpose designs a kind of modified model plate valve, comprise valve body, valve seat, valve rod, flashboard, valve gap and operating device, said valve seat places in the valve body; Said flashboard and valve seat be snug fit mutually; Said valve rod one end is connected with flashboard, and its other end links to each other with operating device, and said valve gap and valve body are fixedly connected; Said valve body cavity bottom is provided with pollutant exhaust hole; The sealing area of said flashboard both sides is or/and water conservancy diversion zone sprayed wc alloy is protruding, and said flashboard upgrading slot, flashboard both sides are symplex structure, and the bottom part of flashboard is provided with the curve bath structure.
Said sealing surface of seat sprayed wc alloy is protruding.
The protruding supersonic spray coating mode that adopts of said diamondite sprays, said diamondite hardness HV >=900, and said diamondite height of projection >=25mm, its profile is O shape, W shape or C shape convex surface.
Said valve seat afterbody is established the lengthening dustproof construction, and valve seat is provided with the seal gease fill valve, and the middle flange seal between said valve seat and the valve body adopts the double sealing structure of metallic gasket+NBR.
Adopt triple adjustable filling-material structures between said valve rod and the valve gap: the sealing configuration of NBR, PTFE and Expanded graphite.
The inside and outside surface of said valve housing is coated with thermostable rustproof agent paint after all handling through the high pressure derusting by sandblasting.
Beneficial effect of the present invention:
1. the high Tungsten carbite convex surface of protruding 0.25mm makes hard seal plate gate valve truly be achieved.
2. the hardness of tungsten carbide material is only second to diamond, HV >=1000, can resist all particles except that diamond wearing and tearing, abrade and wash away.
3. the O shape convex surface that protruding 0.25mm is high makes valve open moment generation two passages up and down, and circulation area increases by 1 times, and flow velocity reduces, and washes away to alleviate.Prolonged the working life of valve.
4. high W shape (or C shape) the shape Tungsten carbite convex surface of protruding 0.25mm makes valve in opening process, protect runner not washed away.
5. owing to, compare whole sprayings and practice thrift spraying cost 75% only at the sealing area and the high convex surface of water conservancy diversion zone spraying 0.25mm of flashboard two sides.
6. because whole convex surface is a kind of material (Tungsten carbite), compare the big plane that two kinds of materials are inlayed formation, it is much easier that grinding process just becomes.
[description of drawings]
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the sectional drawing of Fig. 1;
Fig. 3 is the structural representation of flashboard of the present invention;
Fig. 4 is the structural representation of valve seat of the present invention;
Fig. 5 is valve base sealing fat filling structural representation of the present invention;
Fig. 6 is a sealed structural representation between valve rod of the present invention and the valve gap;
Fig. 7 is a valve seat dustproof construction schematic representation of the present invention;
Among the figure: 1 is valve body; 2 is the O RunddichtringO; 3 is the O RunddichtringO; 4 is seating spring; 5 is valve seat; 6 is flashboard; 7 is pollutant exhaust hole; 8 is operating device; 9 is curve bath; 11 is filler (the fire-resistant sealing compound of Expanded graphite); 12 is spacer ring; 13 is the O RunddichtringO; 14 is the O RunddichtringO; 15 is Gland; 16 is nut; 17 is double-screw bolt; 18 is nut; 19 is double-screw bolt; 25 is the seal gease fill valve; 31 is that the sealing area diamondite is protruding; 31 is that water conservancy diversion zone diamondite is protruding; 33 is targeting part; 41 is that the sealing surface of seat diamondite is protruding; 55 is the seal gease fill valve; 71 is valve seat insert; 72 is seating spring; 73 is the valve seat dustproof construction.
[embodiment]
Further specify below below in conjunction with accompanying drawing the present invention being done:
Shown in accompanying drawing, the present invention includes valve body, valve seat, valve rod, flashboard, valve gap and operating device, said valve seat places in the valve body; Said flashboard and valve seat be snug fit mutually; Said valve rod one end is connected with flashboard, and its other end links to each other with operating device, and said valve gap and valve body are fixedly connected; Said valve body cavity bottom is provided with pollutant exhaust hole; The sealing area of said flashboard both sides is or/and water conservancy diversion zone sprayed wc alloy is protruding, and said flashboard profile is for locate (it mainly relies on the deadweight of flashboard and the symplex structure of flashboard upgrading slot) and guide structure (the flashboard bilateral symmetry that is shown in the following figure structure) automatically, and the bottom part of flashboard is provided with the curve bath structure.Said sealing surface of seat sprayed wc alloy is protruding.The protruding supersonic spray coating mode that adopts of said diamondite sprays, said diamondite hardness HV >=900, and said diamondite height of projection >=25mm, its profile is O shape, W shape or C shape convex surface.
Sealing part and pod apertures place at flashboard have sprayed the anti-diamondite that washes away, and sealing surface of seat has also sprayed diamondite, adopt the supersonic spray coating diamondite, and sealing surface hardness reaches HV900-1200, and is wear-resistant, corrosion-resistant.Intensity between overlay cladding and the matrix reaches metallurgy combination; Can be under the part opening state; The impact of enough intensity with bearing pump outlet high-pressure medium arranged; Be specially to the special valve of the strict operating mode design of pump discharge, use condition shows: plate valve of the present invention is anti-to be washed away, wear-resistant, long service life, and sealing is reliable when guaranteeing to close.
Said flashboard adopts location and guide structure automatically, can install and use arbitrarily angled, does not receive spatial limitation.Unique curve bath (semilune flashboard) structure overcomes the not smooth shortcoming of common no pod apertures plate valve blowdown, has good blowdown performance: can prevent that pipeline greasy dirt, impurity from lodging in the valve body bottom.The more penetrable impurity that lodges in the valve body bottom of its sharp targeting part front end guarantees that the valve closing position consistently.
For making things convenient for the maintenance of pipeline blowdown and valve, adopt the design of bottom blow-down hole, valve body chamber, make blowdown operation convenient.
Valve seat is provided with the seal gease fill valve, when sealing surface receives unusual damage, but the auxiliary emergent sealing of greasing.
The valve seat afterbody is established the lengthening dustproof construction; To prevent that the fine impurities in the medium from getting into valve seat and valve body connecting part; Thereby keep spring in lifetime, all effective pretightening force can be provided, effectively guarantee the two-way floating function of valve seat, valve operation moment is remained unchanged in life time.
Flange seal adopts the double sealing structure of metallic gasket+NBR in said, guarantees reliable sealing performance under high temperature, the normal temperature, prevents that medium from leaking.
Adopt unique triple adjustable filling-material structure between said valve rod and the valve gap: the NBR+PTFE+ Expanded graphite, easy to adjust, sealing is reliable, stops the medium phenomenon that leaks outside.
The flow of flashboard, valve gap: a. blank: forge or sheet material b. heat treatment, c. roughing: profile and surface; D. semi finishing: stay grinding allowance; E. fine finishing: grinding need spray face, f. heat treatment, the painted or magnetic detection of g.; H. assembling. sprayed wc, i. grinding: correct grinding Tungsten carbite sealing surface.
The flow of valve rod: a. blank: forge or the alloy bar; B. heat treatment: stress relief annealing or solution treatment; C. roughing: boundary dimension, d. heat treatment: modified or destressing, the e. semi finishing: polished rod stays the mill surplus; F. fine finishing: threaded stem, g. fine finishing: grinding valve rod cylindrical.
The flow of valve body, valve gap: a. blank: casting, b. heat treatment: stress relief annealing, c. roughing: passage flange, d. fine finishing: valve seat aperture, e. drilling operating: bore the flange through hole, the test of f. casing rigidity, g. sand blast, h. assembling.
Claims (5)
1. a modified model plate valve comprises valve body, valve seat, valve rod, flashboard, valve gap and operating device, and said valve seat places in the valve body; Said flashboard and valve seat be snug fit mutually, and said valve rod one end is connected with flashboard, and its other end links to each other with operating device; Said valve gap and valve body are fixedly connected, and said valve body cavity bottom is provided with pollutant exhaust hole, it is characterized in that: the sealing area of said flashboard both sides is or/and water conservancy diversion zone sprayed wc alloy is protruding; The upgrading slot of said flashboard, flashboard both sides are symplex structure, and the bottom part of flashboard is provided with the curve bath structure, and said sealing surface of seat sprayed wc alloy is protruding; The protruding supersonic spray coating mode that adopts of said diamondite sprays; Said diamondite hardness HV >=900, said diamondite height of projection >=25mm, its profile is O shape, W shape or C shape convex surface; Said valve seat afterbody is established the lengthening dustproof construction; Valve seat is provided with the seal gease fill valve, and the middle flange seal between said valve seat and the valve body adopts the double sealing structure of metallic gasket+NBR, adopts triple adjustable filling-material structures between said valve rod and the valve gap: the sealing configuration of NBR, PTFE and Expanded graphite.
2. a kind of modified model plate valve as claimed in claim 1 is characterized in that: the inside and outside surface of said valve body is coated with thermostable rustproof agent paint after all handling through the high pressure derusting by sandblasting.
3. a kind of modified model plate valve as claimed in claim 1 is characterized in that the flow of described flashboard, valve gap: a. blank: forge or sheet material b heat treatment; C. roughing: profile and surface, the d. semi finishing: stay grinding allowance, e. fine finishing: grinding need spray face; F. heat treatment; G. painted or magnetic detects, the h. assembling. sprayed wc, i. grinding: correct grinding Tungsten carbite sealing surface.
4. a kind of modified model plate valve as claimed in claim 1; The flow that it is characterized in that described valve rod: a. blank: forge or the alloy bar b. heat treatment: stress relief annealing or solution treatment, c. roughing: boundary dimension; D. heat treatment: modified or destressing; E. semi finishing: polished rod stays the mill surplus, f. fine finishing: threaded stem, g. fine finishing: grinding valve rod cylindrical.
5. like the described a kind of modified model plate valve of claim l, it is characterized in that the flow of described valve body, valve gap: a. blank: casting, b. heat treatment: stress relief annealing; C. roughing: passage flange; D. fine finishing: valve seat aperture, e. drilling operating: bore the flange through hole, the test of f. casing rigidity; G. sand blast, the h. assembling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102477106A CN101929554B (en) | 2010-08-06 | 2010-08-06 | Improved flat gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102477106A CN101929554B (en) | 2010-08-06 | 2010-08-06 | Improved flat gate valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101929554A CN101929554A (en) | 2010-12-29 |
| CN101929554B true CN101929554B (en) | 2012-11-28 |
Family
ID=43368893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102477106A Active CN101929554B (en) | 2010-08-06 | 2010-08-06 | Improved flat gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101929554B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104192544A (en) * | 2014-09-01 | 2014-12-10 | 大唐保定热电厂 | Coal feeder quick-closing valve |
| CN104695899A (en) * | 2015-03-16 | 2015-06-10 | 盐城市琪航石油机械有限公司 | Shale gas fracturing well head device |
| CN106552959A (en) * | 2015-09-24 | 2017-04-05 | 苏州恩威尔机械有限公司 | A kind of valve body boring grab and valve body production technology |
| CN105757268B (en) * | 2016-05-19 | 2019-01-08 | 陈亮 | Ash valve |
| CN107178623A (en) * | 2017-06-24 | 2017-09-19 | 郭善财 | Sand-blasting machine and its sand supplying system and flow control valve |
| CN114060551A (en) * | 2021-10-27 | 2022-02-18 | 纽威石油设备（苏州）有限公司 | An underwater gate valve |
| CN117685383B (en) * | 2024-02-04 | 2024-04-09 | 什邡慧丰采油机械有限责任公司 | 175MPa high pressure resistant flat valve capable of being opened and closed rapidly |
| CN119913340A (en) * | 2025-03-20 | 2025-05-02 | 成都砺久新材料科技有限责任公司 | A valve plate of an ultra-high pressure wellhead flat valve and a preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2703173Y (en) * | 2004-06-16 | 2005-06-01 | 郑州众诚科贸有限公司 | Wedge type sealing gate valve |
| CN1804121A (en) * | 2006-01-17 | 2006-07-19 | 辽河石油勘探局 | Method for spray-welding valve plate valve seat sealing surface of viscous oil thermal production well mouth by utilizing nickel-based alloy |
| CN201021723Y (en) * | 2007-02-09 | 2008-02-13 | 良精集团阀门有限公司 | Yinba residue discharge valve |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01176862A (en) * | 1987-12-29 | 1989-07-13 | Kubota Ltd | Valve parts with excellent sliding properties |
| CN201851692U (en) * | 2010-08-06 | 2011-06-01 | 上海高中压阀门股份有限公司 | Improved flat gate valve |
-
2010
- 2010-08-06 CN CN2010102477106A patent/CN101929554B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2703173Y (en) * | 2004-06-16 | 2005-06-01 | 郑州众诚科贸有限公司 | Wedge type sealing gate valve |
| CN1804121A (en) * | 2006-01-17 | 2006-07-19 | 辽河石油勘探局 | Method for spray-welding valve plate valve seat sealing surface of viscous oil thermal production well mouth by utilizing nickel-based alloy |
| CN201021723Y (en) * | 2007-02-09 | 2008-02-13 | 良精集团阀门有限公司 | Yinba residue discharge valve |
Non-Patent Citations (1)
| Title |
|---|
| JP平1-176862A 1989.07.13 |
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| Publication number | Publication date |
|---|---|
| CN101929554A (en) | 2010-12-29 |
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