CN201772087U - Hard-sealing arc plate valve - Google Patents
Hard-sealing arc plate valve Download PDFInfo
- Publication number
- CN201772087U CN201772087U CN2010205111597U CN201020511159U CN201772087U CN 201772087 U CN201772087 U CN 201772087U CN 2010205111597 U CN2010205111597 U CN 2010205111597U CN 201020511159 U CN201020511159 U CN 201020511159U CN 201772087 U CN201772087 U CN 201772087U
- Authority
- CN
- China
- Prior art keywords
- valve
- flashboard
- hard
- arc plate
- sealing
- 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
Landscapes
- Lift Valve (AREA)
Abstract
The utility model relates to a hard-sealing arc plate valve, in particular to a flash board in a hard-sealing hand-operated plate valve, and belongs to the technique field of liquid valve manufacture. The hard-sealing arc plate valve comprises a valve body, a valve cavity, the flash board, a valve rod, a hand wheel and the like. Without changing the valve cavity structure in the prior art, the design is as follows: two side surfaces of the flash board are convex circular arcs, or the two side surfaces and the bottom surface of the flash board are convex arcs simultaneously. The hard-sealing arc plate valve has the advantages of simple processing technique, low manufacturing cost, high flash board intensity and high pressure bearing capability, and can meet the test requirements of the valve under a fully open state.
Description
Technical field
The utility model relates to a kind of hard sealing circular arc flap type, relates in particular to the flashboard in the manual flap type of a kind of hard sealing, belongs to Liquid valve manufacturing technology field.
Background technique
Extensively apply at present the manual flap type of hard sealing in oil field shaft mouth production tree or the oil transport pipeline, its working principle is: realize the open and close of valve by the relative position between conversion flashboard and the valve seat.Described flashboard profile is a cuboid, and cuboid is provided with two sealing surfaces, the upper end that are parallel to each other and is provided with the T-slot, the bottom that connect valve rod and is provided with through hole perpendicular to two sealing surfaces.Valve seat is two and closely connected respectively on two sealing surfaces of flashboard.The closure of the Kong Shiwei valve on the entity part complete closed valve seat on flashboard top; When the hole of flashboard bottom is the standard-sized sheet of valve when hole on the valve seat overlaps.For preventing two sealing surface rapid wears of flashboard, on two sealing surfaces also airless spraying one deck nickel-base alloy.At standard code be: " industrial gas oil, drilling well and oil production equipment, wellhead assembly and production tree " NBS and the standard code of GB/T22513-2008 are: in the 19th edition " wellhead assembly and production tree equipment code " general international standard of API spec 6A-2004, all stipulated the pressure test standard under the hermetically sealed and half-open position of valve seat, and the valve that most of valve manufacturing firm produces, its test data can both reach above-mentioned two standard-requireds.Present problem is that considerable part is used valve unit, propose to increase the rated pressure test of valve seat under full-gear according to actual user demand, and the test of the rated pressure under the full-gear is not made stipulations in above-mentioned two standards, and the manual flap type of existing hard sealing all can not be by the test requirements document under this state.Because the flashboard shaped design at strength position is unreasonable, the problem that shows is: the flashboard bottom the radial crack of cover coat appears in hole week, even more serious person then phenomenon occurs tearing at the Kongzui small bore place of flashboard bottom.Many the above, design a kind of manual flap type of hard sealing that not only reaches standard code but also meet consumers' demand, be the task of top priority in fact.
Summary of the invention
Do not reach the required pressure of pressure testing at having the manual flap type of hard sealing at present now under full-gear, the utility model provides a kind of hard sealing circular arc flap type, has improved the pressure that flashboard bears.
The utility model takes following technological scheme to implement: it comprises formations such as valve body, valve pocket, flashboard, valve rod, handwheel, under the situation that does not change existing valve pocket structure, the bi-side of flashboard are designed to the evagination circular arc, or flashboard bi-side and bottom surface are designed to the evagination circular arc simultaneously.The utility model is designed to the purpose of side cambered surface with the side plane that connects two sealing surfaces in the original flashboard, is the sectional area that increases flashboard Kongzui small bore place.As can be known, when N was definite value, the A value was big more, б is more little by Stress calculation formula: б=N/A (б is that direct stress, N are that power, A suffered on the cross section is stressed sectional area in the formula).Therefore, do not changing valve volume and shape, do not changing under the situation of flashboard width and thickness, making full use of the sectional area that interior the utilized space of valve pocket increases flashboard Kongzui small bore place, to strengthen the tensile strength of flashboard.
The utlity model has that technology is succinct, fabricating cost is low, flashboard tensile strength height, the pressure that bears are big, can satisfy the high pressure test request of valve under full-gear.
Description of drawings
Accompanying drawing 1 is a main sectional structure schematic representation of the present utility model;
Accompanying drawing 2 is the main TV structure schematic representation of flashboard in the accompanying drawing 1;
Accompanying drawing 3 is the left TV structure schematic representation of flashboard in the accompanying drawing 1;
Accompanying drawing 4 is the plan structure schematic representation of flashboard in the accompanying drawing 1.
In accompanying drawing 1,2,3,4: 1, flashboard, 2, sealing surface, 3 through holes, 4 arc surfaces.
Embodiment
Shown in accompanying drawing 1,2,3,4, flashboard 1 places among the valve pocket, drive flashboard 1 by valve rod and in valve pocket, move up and down, the through hole 3 that is provided with when flashboard 1 and valve pocket mesopore over against or when overlapping, valve is in full-gear.Because under full-gear, ducted fluid pressure direct be used for inner side surface around the through hole 3, when through hole 3 inner side surfaces were subjected to enough big pressure, being out of shape can appear in through hole 3 bi-side or bi-side and bottom surface, serious appearance is torn.Cause flashboard 1 surperficial friction coat to play not antifriction of Zou's tear face, flashboard 1 distortion and not withstand voltage.Arc surface 4 is made in the side that will connect two sealing surfaces 2 in the utility model, the hole wall of through hole 3 is to the side minimum cross-sectional area of flashboard 1, minimum cross-sectional area by former flashboard: A=thickness of slab * (plate wide-through-hole diameter) is increased to: A '=thickness of slab * (plate wide-through-hole diameter)+cambered surface is long-pending.Under the valve wide open state, must satisfy the tensile strength condition of rated pressure side examination: б max=N/A≤(б) (N is that rated pressure, A are the dangerouse cross-section area in the formula) with flashboard 1 as according to inference: the б ' max=N/A ' of flashboard 1 in the б max=N/A of former flashboard, the utility model; Because A '＞A, so б ' max＜б max.Therefore, the side plane of former connection two sealing surfaces 2 is designed to side arc surface 4, undoubtedly the intensity that improves flashboard 1 is good.In actual side examination, because the utility model has increased the minimum cross-sectional area of flashboard 1, therefore when rated pressure acted on through hole 3 circumferential inner walls on the flashboard 1, not only the intensity at smallest cross-sectional place had satisfied test request, and the elastoresistance deformation ability has also obtained reinforcement.This index no less important because in background technique the manual flap type of the existing hard sealing of statement once, the problem that is occurred by test under flashboard 1 full-gear comprises: flashboard 1 lower through-hole 3 hole week, radial crack appearred.This is because the resiliently deformable that effect occurred that flashboard 1 smallest cross-sectional is in rated pressure causes.Because for to prevent the surperficial rapid wear of sealing surface, and sprayed one deck nickel-base alloy on two sealing surfaces 2 of flashboard 1, the resistance to tension of this layer nickel-base alloy is very fragile.When the plate body of flashboard 1 is stressed when resiliently deformable occurring, the form that this layer nickel-base alloy showed can only be to tear, and when the plate body of flashboard 1 is stressed when entering plastic deformation, it is more obvious that it tears depth.Therefore, increase the minimum cross-sectional area of flashboard 1, strengthened flashboard 1 ability of anti-deformation equally, played the action effect that prevents that tearing from appearring in the nickel-base alloy face.Need the bi-side of flashboard 1 are designed to arc surface 4 following of the bigger situation of pressure in the utility model, all be designed to arc surface 4 in the bi-side and the bottom surface of the great situation lower flashboard 1 of pressure.
Claims (2)
1. one kind seals the circular arc flap type firmly, and it comprises that valve body, valve pocket, flashboard, valve rod, handwheel constitute, and is characterized in that the bi-side of flashboard are designed to the evagination circular arc.
2. a hard sealing circular arc flap type is characterized in that flashboard bi-side and bottom surface are designed to the evagination circular arc simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205111597U CN201772087U (en) | 2010-08-31 | 2010-08-31 | Hard-sealing arc plate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205111597U CN201772087U (en) | 2010-08-31 | 2010-08-31 | Hard-sealing arc plate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201772087U true CN201772087U (en) | 2011-03-23 |
Family
ID=43751929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205111597U Expired - Lifetime CN201772087U (en) | 2010-08-31 | 2010-08-31 | Hard-sealing arc plate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201772087U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384277A (en) * | 2010-08-31 | 2012-03-21 | 盐城神华机械制造有限公司 | High-pressure resistant hard-seal flat valve |
| WO2018076155A1 (en) * | 2016-10-25 | 2018-05-03 | 南通龙源电站阀门有限公司 | Parallel gate valve |
-
2010
- 2010-08-31 CN CN2010205111597U patent/CN201772087U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384277A (en) * | 2010-08-31 | 2012-03-21 | 盐城神华机械制造有限公司 | High-pressure resistant hard-seal flat valve |
| WO2018076155A1 (en) * | 2016-10-25 | 2018-05-03 | 南通龙源电站阀门有限公司 | Parallel gate valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201982792U (en) | Dual-seal corrugated pipe chlorine valve | |
| CN201772087U (en) | Hard-sealing arc plate valve | |
| CN203336001U (en) | Hydraulic drive flat valve with manually-closing device | |
| CN102465249A (en) | High-pressure resisting hard sealing manual flat valve | |
| CN102384277A (en) | High-pressure resistant hard-seal flat valve | |
| CN104653810B (en) | Composite ceramics spheroid and preparation method thereof | |
| CN203023479U (en) | Seal gasket for motor vehicle | |
| CN103213635A (en) | Fuel tank cap and oil filler sealing structure assembly for motorcycle | |
| CN201925504U (en) | Square integrated-cover-type hand-operated rising-stem wedge-shaped gate valve | |
| CN201836382U (en) | Thermoplastic polyurethane hydraulic seal ring | |
| CN202597683U (en) | Reinforced high-pressure sealing filler | |
| CN202901318U (en) | Heavy caliber center line-type butterfly valve provided with hollow valve plate | |
| CN202972003U (en) | Balanced trunnion type connecting rod valve core | |
| CN107916909A (en) | A kind of baffle bleeder | |
| CN202468978U (en) | Inner arc-shaped rectangular rubber sealing ring | |
| CN203199098U (en) | Fuel tank cover and oil filler sealing structure assemblyfor motorcycle | |
| CN204717041U (en) | The corrosion-resistant fluorine-lining valve door of zero leakage | |
| CN105003675A (en) | High-pressure-resisting flat valve | |
| CN205315695U (en) | Buffering formula graphite seal ring | |
| CN104405899A (en) | Large-aperture fully-covered eccentric butterfly valve | |
| CN2809357Y (en) | High and middle pressure corrugated pipe stop valve | |
| CN202082422U (en) | Improved sealing structure of valve seat assembly of hard sealing ball valve | |
| CN109898049A (en) | A kind of flat plate valve gate plate material and production method | |
| CN202834138U (en) | Parallel type gate valve with balance hole | |
| CN204344947U (en) | The complete coated eccentric-butterfly-valve of a kind of heavy caliber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110323 |
|
| CX01 | Expiry of patent term |