CN202032132U - Vertical butt-welded check valve with small-bore main body - Google Patents
Vertical butt-welded check valve with small-bore main body Download PDFInfo
- Publication number
- CN202032132U CN202032132U CN2011201038402U CN201120103840U CN202032132U CN 202032132 U CN202032132 U CN 202032132U CN 2011201038402 U CN2011201038402 U CN 2011201038402U CN 201120103840 U CN201120103840 U CN 201120103840U CN 202032132 U CN202032132 U CN 202032132U
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- valve
- flap
- main body
- small
- valve clack
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Abstract
The utility model relates to a vertical butt-welded check valve with a small-bore main body, which comprises a valve body, wherein a valve seat is arranged at the bottom of an inner cavity of the valve body, and a valve clack is arranged over the valve seat; the valve clack is in tight fit with the valve seat to achieve the seal of the valve, and a plurality of diversion trenches are uniformly arranged on the side wall of the inner cavity of the valve; an arc guide rib structure capable of vertically guiding the valve clack is arranged between the adjacent diversion trenches, and the upper and lower ends of the valve clack are provided with annular convex eaves; and the annular convex eaves can be fit with arc guide ribs to achieve the vertical guiding of the valve clack. The utility model has the advantages that: the annular convex eaves of the valve clack can be fit with the arc guide ribs to achieve the vertical guiding of the valve clack, the guiding friction resistance of the valve clack is reduced, and the valve clack stably moves up and down when being opened and closed, so that the sealing surface of the valve clack can be fully matched with the sealing surface of the valve seat. The vertical butt-welded check valve with the small-bore main body is suitable for high-temperature and high-pressure systems in chemical and power fields such as tap check valves of feed pumps at a supercritical/ultra-supercritical power plant.
Description
Technical field
The utility model relates to a kind of valve, the vertical butt welding check valve of particularly a kind of small-bore main body.
Background technique
Vertical check valve is widely used in chemical industry and electric power system as general machinery equipment, and the single flow direction of control media realizes system protection, control requirement.Existing small-bore check valve, valve body is that screw thread or flange are connected with valve gap, and valve pocket integral body is a jar shape volume, and valve volume is bigger, the big cost height of weight; Flap is to be finished by the supporting structure in valve rod and the valve body at the positioning and guiding of valve pocket, parts are many, complex structure, flap weight is big, the resistance that medium is through-flow is big, and the impact force that acts on flap causes the guide sleeve on valve rod and the supporting structure to wear and tear easily, produces a some deviation in the time of can making flap return valve seat, flap is heavier in addition, compresses easily to hinder two sealing surfaces; The effect that is useful in is not that system too frequent, that system's pressure reduction is stable uses.
Summary of the invention
The technical problems to be solved in the utility model provides the vertical butt welding check valve of small-bore main body that a kind of guide structure is simple, be difficult for deviation when flap resets.
For solving the problems of the technologies described above, the technical solution of the utility model is: the vertical butt welding check valve of a kind of small-bore main body, comprise valve body, the intracavity bottom of valve body is provided with valve seat, flap is located at directly over the valve seat, flap can closely cooperate with valve seat and realize the sealing of valve, and its innovative point is: the intracavity sidewall of described valve body is evenly distributed with several guiding gutters, is the arcuate guide muscle structure that can be the flap vertically-guided between the adjacent guiding gutter; The flap upper and lower end is established the convex annular eaves, and this convex annular eaves can cooperate the vertically-guided of realizing flap with the arcuate guide muscle.
Further, the undergauge structure of described flap circumferential surface middle part for reducing gradually to intermediate outer from two ends, and on circumferential surface, be provided with the through flow hole of several and upper-end surface conducting.
Further, place, the upper and lower end medium inlet of described valve body inner spout is the undergauge structure that internal diameter reduces gradually.
Advantage of the present utility model is: the convex annular eaves of flap can cooperate the vertically-guided of realizing flap with the arcuate guide muscle, reduce the guiding surface friction drag of flap, and flap moves up and down when opening and closing stably, makes the flap sealing surface to fit like a glove with sealing surface of seat.The undergauge of flap and through flow hole structure make medium when circulation, and the flowing velocity that medium is through-flow speeds, and flap opens and closes response fast.Place, medium inlet inner spout is provided with the undergauge transition, alleviate the high pressure torrent, medium relaxes pass through the flap sealing surface, has guaranteed that the flap sealing surface opens and closes to be not easy to blow damages, to support wound, and the upper and lower end medium inlet of valve body is located the outer mouth of pipe and established groove and can make things convenient for the welding of valve body and pipeline to fix.The vertical butt welding check valve of the small-bore main body of this structure is applicable to the High Temperature High Pressure system of chemical industry and electric power, and for example: the tap check valve of pump etc. is given in overcritical/ultra supercritical power station.
Description of drawings
Fig. 1 is the vertical butt welding check valve of the small-bore main body structural representation of the utility model preferred version.
Fig. 2 be Fig. 1 along A-A line sectional view.
Fig. 3 is the flap structural representation in the utility model preferred version.
Embodiment
As shown in Figure 1, 2, comprise valve body 1, valve seat 2, flap 3, guiding gutter 4, guiding rib 5, protruding eaves 6, through flow hole 7.
Above-mentioned valve body 1 is connected into an integral body by the upper and lower half valve body by butt welding, and the intracavity bottom of valve body 1 is provided with valve seat 2, and flap 3 is located in the inner chamber directly over the valve seat, and the upper and lower end of valve body 1 is established the medium inlet 8 that is communicated with the middle part inner chamber.
The intracavity sidewall of valve body 1 is evenly distributed with several guiding gutters 4, between the adjacent guiding gutter 4 interior circular arc guiding rib 5 structures, as shown in Figure 3, flap 3 upper and lower end are established convex annular eaves 6, the tolerance fit numerical value that the design of the inner arc radius of the cylindrical of this convex annular eaves 6 and guiding rib 5 is certain, make flap 3 can be under the guiding of guiding rib 5 steady vertical movement.Flap 3 circumferential surfacies middle parts undergauge structure for reducing gradually to intermediate outer from two ends, and on circumferential surface, be provided with the through flow hole 7 of several and upper-end surface conducting.
For slowing down the impact of high pressure torrent to flap 3 sealing surfaces, upper and lower end medium inlet 8 place's inner spouts of valve body 1 are the undergauge structure that internal diameter reduces gradually.
Claims (3)
1. vertical butt welding check valve of small-bore main body, comprise valve body, the intracavity bottom of valve body is provided with valve seat, flap is located at directly over the valve seat, flap can closely cooperate with valve seat and realize the sealing of valve, it is characterized in that: the intracavity sidewall of described valve body is evenly distributed with several guiding gutters, is the arcuate guide muscle structure that can be the flap vertically-guided between the adjacent guiding gutter; The flap upper and lower end is established the convex annular eaves, and this convex annular eaves can cooperate the vertically-guided of realizing flap with the arcuate guide muscle.
2. the vertical butt welding check valve of small-bore main body according to claim 1 is characterized in that: the undergauge structure of described flap circumferential surface middle part for reducing gradually to intermediate outer from two ends, and on circumferential surface, be provided with the through flow hole of several and upper-end surface conducting.
3. the vertical butt welding check valve of small-bore main body according to claim 1 is characterized in that: place, the upper and lower end medium inlet inner spout of described valve body is the undergauge structure that internal diameter reduces gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201038402U CN202032132U (en) | 2011-04-11 | 2011-04-11 | Vertical butt-welded check valve with small-bore main body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201038402U CN202032132U (en) | 2011-04-11 | 2011-04-11 | Vertical butt-welded check valve with small-bore main body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202032132U true CN202032132U (en) | 2011-11-09 |
Family
ID=44894429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201038402U Expired - Fee Related CN202032132U (en) | 2011-04-11 | 2011-04-11 | Vertical butt-welded check valve with small-bore main body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202032132U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878329A (en) * | 2012-10-13 | 2013-01-16 | 南通国电电站阀门有限公司 | Supercritical butt welding cylindrical vertical check valve |
| CN105697361A (en) * | 2014-11-25 | 2016-06-22 | 瑞木镍钴管理（中冶）有限公司 | Lower-guide-free conic one-way valve for high-temperature mud diaphragm pump |
| CN109027328A (en) * | 2018-08-25 | 2018-12-18 | 宿州中矿三杰科技有限公司 | A kind of vertical non-return valve |
-
2011
- 2011-04-11 CN CN2011201038402U patent/CN202032132U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878329A (en) * | 2012-10-13 | 2013-01-16 | 南通国电电站阀门有限公司 | Supercritical butt welding cylindrical vertical check valve |
| CN105697361A (en) * | 2014-11-25 | 2016-06-22 | 瑞木镍钴管理（中冶）有限公司 | Lower-guide-free conic one-way valve for high-temperature mud diaphragm pump |
| CN109027328A (en) * | 2018-08-25 | 2018-12-18 | 宿州中矿三杰科技有限公司 | A kind of vertical non-return valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20140411 |