CN202884075U - Toxic flue gas safety shutoff valve - Google Patents
Toxic flue gas safety shutoff valve Download PDFInfo
- Publication number
- CN202884075U CN202884075U CN 201220492820 CN201220492820U CN202884075U CN 202884075 U CN202884075 U CN 202884075U CN 201220492820 CN201220492820 CN 201220492820 CN 201220492820 U CN201220492820 U CN 201220492820U CN 202884075 U CN202884075 U CN 202884075U
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- Withdrawn - After Issue
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Abstract
The utility model discloses a toxic flue gas safety shutoff valve which comprises a valve body, a valve plate and a gas sealing box, wherein valve plate sliding grooves are formed in inner side walls of the gas sealing box. The toxic flue gas safety shutoff valve has the advantages that the valve plate is a dynamic pressure seal, more specifically, under the effect of an air cylinder, the valve plate is opened to a right position or is closed to a right position, then sealing rings expand outwards simultaneously under the effect of high-pressure gas, the sealing rings are tightly attached to a valve seat to realize dynamic compression of the valve plate and the valve seat, and therefore the valve plate and the valve seat are sealed, and no leakage is caused; the valve body is sealed through gas pressure, wherein the valve body is in a totally closed structure, nitrogen is filled in the valve body, the gas pressure inside the valve body is higher than the gas pressure inside a coal gas pipe, the effect that toxic flue gas cannot leak to the valve body is guaranteed, and therefore a gas seal is achieved; a safety alarm function is achieved, and safety accidents due to damage of the sealing rings are avoided; dust is removed automatically, and the effect that the dust cannot accumulate in the valve body is guaranteed; and a method that the gas comes in through a hollow tube of a piston rod is utilized, and therefore the toxic flue gas safety shutoff valve is more attractive, more ingenious and safer.
Description
Technical field
The utility model type relates to a kind of toxic smoke gas safety valve.
Background technique
Gas valve is in the industry such as a kind of extensive use chemical metallurgy, with the special valve of control gas pipe line break-make.Institute's employing gas valve all is that the rubber ring that adopts mechanical type to compress on valve seat, the valve plate is fixed structural type on the market at present.There is the rubber cracky in this kind structure, and maintenance is changed relatively in difficulty, the valve body easily dust stratification, has been not closed completely and leaked uneasy congruent shortcoming after damaged.
The model utility content
The purpose of this utility model provides a kind of poison gas safety shutoff valve.
The technical solution of the utility model is, a kind of poison gas safety shutoff valve, comprise valve body, valve plate, the gas seal case, at the gas seal box wall valve plate chute is arranged, have valve plate through-hole side seal groove and valve plate blind hole side sealing ring recess in the bi-side of valve plate, the valve plate through-hole side seal groove of valve plate both sides is communicated with by valve plate through-hole side seal groove through hole, the valve plate blind hole side sealing ring recess of valve plate both sides is communicated with by valve plate blind hole side sealing ring recess through hole, valve plate through-hole side seal ring is arranged in valve plate through-hole side seal groove, in valve plate blind hole side sealing ring recess through hole, valve plate blind hole side sealing circle is arranged; In the valve plate one end left and right sides left air cylinder connecting rod and right air cylinder connecting rod are arranged, in the gas seal case outside left cylinder and right cylinder are arranged; The left cylinder piston rod of left cylinder is hollow stem, and connects left air cylinder connecting rod, is inserted with left cylinder intake pipe at left cylinder piston rod, is connected to valve opening encapsulation air valve at left cylinder intake pipe; The right cylinder piston rod of right cylinder is hollow stem, and connects right air cylinder connecting rod, is inserted with right cylinder intake pipe at right cylinder piston rod, is connected to valve at right cylinder intake pipe and closes the sealing air valve; Valve is opened tracheae one termination valve plate through-hole side seal groove through hole, the left cylinder piston rod of another termination; Valve cuts out nitrogen tube one termination valve plate blind hole side sealing ring recess through hole, the right cylinder piston rod of another termination; At the gas seal case hermetic seal air inlet pressurizing valve, hermetic seal exhaust reducing valve, soot cleaning valve and pressure detecting instrument are housed.
Valve body in gas seal case both sides is connected with bypass tube, at bypass tube bypass valve is housed.
Sealing gas adopts nitrogen.
The utlity model has following technique effect, the one, valve plate is the dynamic pressure sealing.Both sides are provided with 4 seal rings on the valve plate, i.e. 2 through-hole side seal rings, 2 blind hole side sealing circles.Valve plate under cylinder action, reach the position or close put in place after, seal ring is generally under the nitrogen effect at the 0.5MPa pressurized gas, outwards expands simultaneously, seal ring is adjacent to valve seat tightly, realizes that valve plate and valve seat dynamically compress, sealing is without leakage; The 2nd, the sealing of valve body gas pressure: valve body is full-closed structure, be filled with the nitrogen of 0.3MPa from the nitrogen suction valve at top, air pressure in the valve in any case guarantee that poison gas can not leak into valve body yet, is realized gas seal greater than the air pressure 0.15～0.25MPa in the gas pipe; The 3rd, safety alarm: pressure transducer is housed on the valve body, and under normal circumstances, nitrogen pressure can remain on 0.3MPa in the valve body, does not reach this value if calm the anger, and then can produce audible and visible alarm.Illustrate that rubber seal of working on the valve plate is damaged, replacing needs repairing.Avoid damaging the security incident that causes because of seal ring; The 4th, automatic ash removing: when the valve body nitrogen pressure normally remained on 0.3MPa, soot cleaning valve can regularly be opened 5 seconds, and the dust stratification in the valve body is discharged in the outside atmosphere with nitrogen moment earial drainage.Guaranteeing in the valve body not can dust stratification, after soot cleaning valve is opened 5 seconds, and pressure release in the valve body, suction valve can be opened additional nitrogen automatically, keeps the valve body internal pressure to maintain 0.3MPa; The 5th, piston rod hollow tubular intake method: the gas source pipe of rubber ring dynamic pressure sealing adopts unique air intake type, and suction tude is arranged in the hollow tubular of cylinder piston rod.Avoided like this, when valve plate moves back and forth, the flexible air inlet pipe that the dynamic pressure sealing is required is more attractive in appearance, more ingenious, safer.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the right cylinder of the utility model place partial cross sectional views.
A-A cross section view when Fig. 3 is the utility model closed condition.
A-A cross section view when Fig. 4 is the utility model opening state.
Fig. 5 is the partial cross sectional views of model utility valve plate.
Fig. 6 is the B-B cross section view of model utility valve plate.
Embodiment
Such as Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, shown in Figure 6, a kind of poison gas safety shutoff valve, comprise valve body 15, valve plate 3, gas seal case 1, at gas seal case 1 madial wall valve plate chute 2 is arranged, have valve plate through-hole side seal groove 28 and valve plate blind hole side sealing ring recess 24 in the bi-side of valve plate 3, the valve plate through-hole side seal groove 28 of valve plate 3 both sides is communicated with by valve plate through-hole side seal groove through hole 29, the valve plate blind hole side sealing ring recess 24 of valve plate 3 both sides is communicated with by valve plate blind hole side sealing ring recess through hole 25, valve plate through-hole side seal ring 5 is arranged in valve plate through-hole side seal groove 28, in valve plate blind hole side sealing ring recess through hole 25, valve plate blind hole side sealing circle 4 is arranged; In the valve plate 3 one end left and right sides left air cylinder connecting rod 27 and right air cylinder connecting rod 12 are arranged, in gas seal case 1 outside left cylinder 13 and right cylinder 10 are arranged; The left cylinder piston rod 11 of left cylinder 13 is hollow stem, and connects left air cylinder connecting rod 27, is inserted with left cylinder intake pipe 8 at left cylinder piston rod 11, is connected to valve opening encapsulation air valve 14 at left cylinder intake pipe 8; The right cylinder piston rod 9 of right cylinder 10 is hollow stem, and connects right air cylinder connecting rod 12, is inserted with right cylinder intake pipe 7 at right cylinder piston rod 9, is connected to valve at right cylinder intake pipe 7 and closes sealing air valve 6; Valve is opened tracheae 30 1 termination valve plate through-hole side seal groove through holes 29, the left cylinder piston rod 11 of another termination; Valve cuts out tracheae 26 1 termination valve plate blind hole side sealing ring recess through holes 25, the right cylinder piston rod 9 of another termination; At gas seal case 1 sealing air inlet pressurizing valve 17, sealing exhaust reducing valve 16, soot cleaning valve 31 and pressure detecting instrument 32 are housed; Valve body 15 in gas seal case 1 both sides is connected with bypass tube 22, at bypass tube 22 bypass valve 23 is housed; Sealing gas adopts nitrogen.
Claims (3)
1. poison gas safety shutoff valve, comprise valve body (15), valve plate (3), gas seal case (1), at gas seal case (1) madial wall valve plate chute (2) is arranged, it is characterized in that: have valve plate through-hole side seal groove (28) and valve plate blind hole side sealing ring recess (24) in the bi-side of valve plate (3), the valve plate through-hole side seal groove (28) of valve plate (3) both sides is communicated with by valve plate through-hole side seal groove through hole (29), the valve plate blind hole side sealing ring recess (24) of valve plate (3) both sides is communicated with by valve plate blind hole side sealing ring recess through hole (25), valve plate through-hole side seal ring (5) is arranged in valve plate through-hole side seal groove (28), valve plate blind hole side sealing circle (4) is arranged in valve plate blind hole side sealing ring recess through hole (25); In valve plate (3) the one end left and right sides left air cylinder connecting rod (27) and right air cylinder connecting rod (12) are arranged, in gas seal case (1) outside left cylinder (13) and right cylinder (10) are arranged; The left cylinder piston rod (11) of left cylinder (13) is hollow stem, and connects left air cylinder connecting rod (27), is inserted with left cylinder intake pipe (8) at left cylinder piston rod (11), is connected to valve opening encapsulation air valve (14) at left cylinder intake pipe (8); The right cylinder piston rod (9) of right cylinder (10) is hollow stem, and connects right air cylinder connecting rod (12), is inserted with right cylinder intake pipe (7) at right cylinder piston rod (9), is connected to valve at right cylinder intake pipe (7) and closes sealing air valve (6); Valve is opened tracheae (30) one termination valve plate through-hole side seal groove through holes (29), the left cylinder piston rod of another termination (11); Valve cuts out tracheae (26) one termination valve plate blind hole side sealing ring recess through holes (25), the right cylinder piston rod of another termination (9); At gas seal case (1) sealing air inlet pressurizing valve (17) is housed, sealing exhaust reducing valve (16), soot cleaning valve (31) and pressure detecting instrument (32).
2. a kind of poison gas safety shutoff valve according to claim 1, it is characterized in that: the valve body (15) in gas seal case (1) both sides is connected with bypass tube (22), at bypass tube (22) bypass valve (23) is housed.
3. a kind of poison gas safety shutoff valve according to claim 1 is characterized in that: sealing gas employing nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220492820 CN202884075U (en) | 2012-09-25 | 2012-09-25 | Toxic flue gas safety shutoff valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220492820 CN202884075U (en) | 2012-09-25 | 2012-09-25 | Toxic flue gas safety shutoff valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202884075U true CN202884075U (en) | 2013-04-17 |
Family
ID=48075505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220492820 Withdrawn - After Issue CN202884075U (en) | 2012-09-25 | 2012-09-25 | Toxic flue gas safety shutoff valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202884075U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062426A (en) * | 2012-09-25 | 2013-04-24 | 湖南金中环保设备有限责任公司 | Toxic smoke safety shutoff valve |
| CN109555867A (en) * | 2018-12-28 | 2019-04-02 | 江苏汉唐环保科技有限公司 | A kind of automatic ash removing type electric flashboard door |
-
2012
- 2012-09-25 CN CN 201220492820 patent/CN202884075U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062426A (en) * | 2012-09-25 | 2013-04-24 | 湖南金中环保设备有限责任公司 | Toxic smoke safety shutoff valve |
| CN103062426B (en) * | 2012-09-25 | 2015-04-29 | 湖南金中环保设备有限责任公司 | Toxic smoke safety shutoff valve |
| CN109555867A (en) * | 2018-12-28 | 2019-04-02 | 江苏汉唐环保科技有限公司 | A kind of automatic ash removing type electric flashboard door |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130417 Effective date of abandoning: 20150429 |