CN201661766U - Straight through type coal gas disconnecting shutoff valve - Google Patents
Straight through type coal gas disconnecting shutoff valve Download PDFInfo
- Publication number
- CN201661766U CN201661766U CN2010201544397U CN201020154439U CN201661766U CN 201661766 U CN201661766 U CN 201661766U CN 2010201544397 U CN2010201544397 U CN 2010201544397U CN 201020154439 U CN201020154439 U CN 201020154439U CN 201661766 U CN201661766 U CN 201661766U
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- valve
- straight
- valve body
- coal gas
- type coal
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- Expired - Fee Related
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Abstract
The utility model discloses a straight through type coal gas disconnecting shutoff valve capable of improving the sealing effect and the safety performance. The straight through type coal gas disconnecting shutoff valve is connected with a pipeline in a straight through way, the through diameter is greater than 600mm, and the straight through type coal gas disconnecting shutoff valve comprises a valve body, a valve blade, a sealing ring, a valve rod, a valve seat, a valve cover and a diffusing hole, wherein the valve rod is vertically connected with the valve blade, the sealing ring is made of rigid, flexible and composite layer materials, the upper side of the sealing structure is covered with neutral aqueous solution, and the diffusing hole is arranged on the valve cover. The valve body adopts the straight through connection, the size of the valve is possibly reduced in order to ensure the valve medium circulation cross section, and a structure that a round pipe is connected with a square box, the square box is connected with the round pipe and a body is the square box is designed.
Description
Technical field
The utility model relates to a kind of valve, specifically is that a kind of straight-through type coal gas is by cut-off valve.
Background technique
Many gas cutting valves are disposed at gas pipe line in large-scale coking and smelting iron and steel, do blind plate usefulness, are used for the coal gas bulkhead that pipeline opens wide maintenance, to guarantee handling safety.These gas cutting valves mainly contain severally like this, a kind ofly are, the front is provided with gate valve or butterfly valve, and a large amount of coal gas of bulkhead are provided with Flap valve subsequently, cut off residual gas; Another kind is, water-sealing valve is set, and once piped gas cut off.Preceding a kind of, handy two cover valves, and also Flap valve must cause gas leakage in opening-closing process; The back is a kind of, and the key of water seal sealing is the rubber seal of gate valve or butterfly valve, and ageing of rubber and sealing malleation stroke is too small and seal pressure is not enough causes sealing unreliable, and water seal was lost efficacy.Reliable and tight sealing effect is the key of gas stop valve; Because the regulation of existing technology and particular location, adopting the straight-through type linkage structure is important selection.
Summary of the invention
Reliability and the leakproofness of the utility model in order to improve valve seal in order to guarantee the medium flow area, provides a kind of straight-through type coal gas by cut-off valve.
The technical solution adopted in the utility model is: a kind of straight-through type coal gas is by cut-off valve, adopt the straight-through type linkage structure, latus rectum is greater than 600 millimeters, comprise: valve body, flap, seal ring, valve rod, valve seat is set on the valve body, valve rod links to each other with flap is vertical, and flap studs with seal ring, and valve gap is equipped with and diffuses the hole.Plane or conical surface structure are adopted in sealing between described seal ring and the valve seat, and the seal ring material adopts rigidity, flexibility or composite bed, and lamination layer structure replaces overlapping being composited by layer flexible and rigid plate.Described valve rod promotes seal ring and valve base sealing on the flap with positive pressure.Behind described seal ring and the valve base sealing, cover neutral water above.Described straight-through type valve body, for guaranteeing valve medium flow area, the employing pipe connects square chest, square chest connects pipe and main body is the structure of square chest.
The beneficial effects of the utility model are: the straight-through type coal gas that the utility model provides is by cut-off valve, keep general straight-through type linkage structure, simplify technology and always schemed the change design, adopted corresponding pipe square chest combining structure, guaranteed valve flow area rate-of flow; Because adopt suitable sealing configuration and material, valve rod links to each other with flap is vertical, valve rod is implemented sufficient, sufficient positive pressure to seal ring, thereby satisfies very reliable " zero seepage " designing requirement; The sealing configuration upside that seal ring and valve seat are formed covers an amount of neutral water, plays the auxiliary seal effect, checks the seepage situation of coal gas once in a while simultaneously; Diffuse the hole above the valve gap, both can diffuse accidental release coal gas, can detect again and overflow coal gas, fully guarantee pipeline operation and maintenance safety.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Among the figure: 1, valve body left circular tube tube, 2, valve body left case, 3, valve body master square chest cavity of resorption, 4, valve body right circular tube tube, 5, the right-hand case of valve body, 6, valve body master square chest epicoele, 7, valve gap, 8, valve rod, 9, flap, 10, seal ring, 11, diffuse the hole, 12, neutral water, 13, valve seat.
Embodiment
Below in conjunction with accompanying drawing, describe specific embodiments of the present utility model in detail.
As shown in Figure 1, straight-through type coal gas described in the utility model is by cut-off valve, comprise: valve body and flap 9, valve body is by valve body left circular tube tube 1, valve body left case 2, valve body master square chest cavity of resorption 3, valve body right circular tube tube 4, the right-hand case 5 of valve body, valve body master square chest epicoele 6 is formed, be provided with the valve seat 13 of annular between valve body master square chest cavity of resorption 3 and the valve body master square chest epicoele 6, the circle edge of flap 9 studs with seal ring 10, valve rod 8 and 9 vertical linking to each other of flap, by the positive pressure of valve rod 8 enforcements to seal ring 10, make seal ring 10 and valve seat 13 form the conical surface or plane sealing, seal ring 10 can adopt rigidity, flexibility or composite material, lamination layer structure replaces overlapping being composited by layer flexible material and rigid material, after the sealing, seal ring 10 and valve seat 13 upsides inject neutral water 12, are equipped with on the valve gap 7 and diffuse hole 11.
This shows, straight-through type coal gas of the present utility model is by cut-off valve, the coal gas medium is pressed valve body left circular tube tube 1, valve body left case 2, valve body master square chest cavity of resorption 3, valve body master square chest epicoele 6, the right-hand case 5 of valve body, valve body right circular tube tube 4 orders are passed through valve, the square chest of selecting for use, make it close cross section flow be arranged with the demarcation round pipe that is connected, satisfy the technological requirement of medium circulation, and volume compact, when closing, valve seat 13 and seal ring 10, valve rod 8 implement fully, under the sufficient positive pressure, form very reliable " zero seepage " sealing pair, after the sealing, seal ring 10 and valve seat 13 upsides inject neutral water 12, both played the auxiliary seal effect, can check simultaneously the seepage situation of coal gas once in a while again, diffuse hole 11 above the valve gap 7, both can diffuse accidental release coal gas, can detect again and overflow coal gas, fully guarantee pipeline operation and maintenance safety.
Claims (1)
1. a straight-through type coal gas is by cut-off valve, be connected with the pipeline straight-through type, latus rectum is greater than 600 millimeters, comprise: valve body and flap (9), valve seat (13), seal ring (10), valve rod (8), neutral water (12), valve gap (7), diffuse hole (11) and form, described valve rod (8) and vertical being connected to form of flap (9) is characterized in that described valve body is made of successively valve body left circular tube tube (1), valve body left case (2), valve body master square chest cavity of resorption (3), valve body master square chest epicoele (6), the right-hand case of valve body (5), valve body right circular tube tube (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201544397U CN201661766U (en) | 2010-03-12 | 2010-03-12 | Straight through type coal gas disconnecting shutoff valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201544397U CN201661766U (en) | 2010-03-12 | 2010-03-12 | Straight through type coal gas disconnecting shutoff valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201661766U true CN201661766U (en) | 2010-12-01 |
Family
ID=43232181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201544397U Expired - Fee Related CN201661766U (en) | 2010-03-12 | 2010-03-12 | Straight through type coal gas disconnecting shutoff valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201661766U (en) |
-
2010
- 2010-03-12 CN CN2010201544397U patent/CN201661766U/en not_active Expired - Fee Related
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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: 20101201 Termination date: 20130312 |