CN203743581U - Emergency device for gas source decompression of poppet valve - Google Patents
Emergency device for gas source decompression of poppet valve Download PDFInfo
- Publication number
- CN203743581U CN203743581U CN201320731315.4U CN201320731315U CN203743581U CN 203743581 U CN203743581 U CN 203743581U CN 201320731315 U CN201320731315 U CN 201320731315U CN 203743581 U CN203743581 U CN 203743581U
- Authority
- CN
- China
- Prior art keywords
- gas
- cylinder
- source
- safety check
- poppet valve
- 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
- 230000006837 decompression Effects 0.000 title claims abstract description 19
- 239000007789 gas Substances 0.000 description 47
- 238000000034 method Methods 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000001746 atrial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Landscapes
- Safety Valves (AREA)
- Check Valves (AREA)
Abstract
The utility model discloses an emergency device for gas source decompression of a poppet valve. A check valve and an air tank are sequentially arranged between a gas source and a cylinder; the air inlet end of the check valve is connected with the gas source; the air outlet end is connected with the air tank; the air tank is connected with the air cylinder; one end of the air tank is connected with the check valve; the other end of the air tank is connected with the air cylinder. The emergency device solves the problem that major accident occurs due to sudden shutting down of the poppet valve as a result of decompression of the gas source.
Description
Technical field
The utility model relates to a kind of poppet valve source of the gas decompression emergency device, refers in particular to the emergency device of the unexpected decompression of poppet valve source of the gas of a kind of electrostatic fabric filter and sack cleaner.
Background technique
Poppet valve is a kind of shutoff door, is widely used in controlling closing of electrostatic fabric filter and sack cleaner flue gas channel.For realizing deduster on-bne repair, generally deduster is divided into several regions to control, and conventionally adopts poppet valve to realize the switching of flue gas channel.
As shown in Figure 1, poppet valve is made up of cylinder 10, cylinder block 20, lifting arm 30, valve plate 40 and valve seat 50 conventionally, and cylinder 10 vertical directions are arranged on cylinder block 20, and lifting arm 30 is arranged on cylinder 10 piston rods, and valve plate 40 is arranged on lifting arm 30, cylinder 10 connects compressed air gas source, under compressed-air actuated effect, realizes and opens or close, when valve plate contact valve seat, close, valve plate is opened during away from valve seat, goes up behavior valve open, and lower behavior valve closing.
In prior art, cylinder 10 is directly connected with compressed air gas source by pipeline, and in the time of the unexpected decompression to zero of source of the gas, valve plate 40 draws cylinder 10 throttle down voluntarily under the effect of gravity, causes flue gas channel to be closed, and causes the accident.Therefore, need solution badly in the time of the unexpected decompression to zero of source of the gas, valve plate 40 is closed and the problem that causes the accident voluntarily, and this case produces thus.
Model utility content
The purpose of this utility model is to provide a kind of poppet valve source of the gas decompression emergency device, closes suddenly the problem causing a serious accident to solve poppet valve because of source of the gas decompression.
For reaching above-mentioned purpose, solution of the present utility model is:
A kind of poppet valve source of the gas decompression emergency device sets gradually safety check and gas tank between source of the gas and cylinder; The inlet end of safety check connects source of the gas, and outlet side connects gas tank, and gas tank connects cylinder, and gas tank one end is connected with safety check, and the other end is connected with cylinder.
Further, between source of the gas and safety check and between safety check and gas tank, be provided with ball valve.
Adopt after such scheme, the utility model sets gradually safety check and gas tank between source of the gas and cylinder.Utilize safety check to have one-way flow and closing function, in the time that cylinder pressure is less than bleed pressure, safety check is opened automatically, and pressurized air flows to cylinder by source of the gas, for cylinder provides source of the gas; In the time of source of the gas chance failure decompression, safety check cuts out automatically, cylinder compressed air can not run off by safety check, simultaneously, because safety check can not cut out moment, cylinder compressed air has part in closure of check ring process, to run off, and the gas tank arranging before safety check can supplement described part number of dropouts, make cylinder keep enough working pressures, to such an extent as to valve plate can not decline because of gravity, throttle down and causing the accident, and then solve poppet valve and close suddenly the problem causing a serious accident because of source of the gas decompression.
Brief description of the drawings
Fig. 1 is prior art poppet valve arrangements schematic diagram;
Fig. 2 is the utility model minor structure schematic diagram.
Label declaration
Cylinder 10 cylinder blocks 20
Lifting arm 30 valve plates 40
Valve seat 50
Source of the gas 1 safety check 2
Gas tank 3 ball valves 4
Cylinder 5.
Embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in detail.
Consult shown in Fig. 2, a kind of poppet valve source of the gas decompression emergency device that the utility model discloses sets gradually safety check 2 and gas tank 3 between source of the gas 1 and cylinder 5; The inlet end of safety check 2 connects source of the gas 1, and outlet side connects gas tank 3, and gas tank 3 connects cylinder 5.
Meanwhile, between source of the gas 1 and safety check 2 and between safety check 2 and gas tank 3, be provided with ball valve 4.
When the utility model uses, compressed air gas source 1 is communicated with cylinder 5 by ball valve 4, safety check 2, ball valve 4, gas tank 3 successively, and source of the gas 1 air pressure is heightened to the left and right than the cylinder large 0.02MPa of 5 working pressure.When normal work, pressurized air enters cylinder 5 by source of the gas 1 by ball valve 4, safety check 2, ball valve 4, gas tank 3, for cylinder 5 provides power.In the time of source of the gas 1 unexpected decompression, safety check 2 right atrial pressures are less than left side, and safety check 2 cuts out under gas pressure, and certain pressure is left in safety check 2 left sides between cylinder 5, makes cylinder 5 overcome valve plate gravity, keep poppet valve in open mode.Because safety check 2 can consume part tolerance in closing process, and gas path joint place exists micro-tolerance to reveal, therefore, gas tank 3 was set before cylinder 5 to supplement the tolerance of consumption, make cylinder 5 keep enough working pressures, gas tank 3 volume size determine the time length that source of the gas decompression rear cylinder 5 works on.Therefore, the utility model can prevent that poppet valve from cutting out suddenly because of source of the gas decompression, processes and races against time for maintenance.
The foregoing is only preferred embodiment of the present utility model, the not restriction to this case design, all equivalent variations of doing according to the design key of this case, all fall into the protection domain of this case.
Claims (2)
1. a poppet valve source of the gas decompression emergency device, is characterized in that: between source of the gas and cylinder, set gradually safety check and gas tank; The inlet end of safety check connects source of the gas, and outlet side connects gas tank, and gas tank connects cylinder; Gas tank one end is connected with safety check, and the other end is connected with cylinder.
2. a kind of poppet valve source of the gas decompression emergency device as claimed in claim 1, is characterized in that: between source of the gas and safety check and between safety check and gas tank, be provided with ball valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320731315.4U CN203743581U (en) | 2013-11-19 | 2013-11-19 | Emergency device for gas source decompression of poppet valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320731315.4U CN203743581U (en) | 2013-11-19 | 2013-11-19 | Emergency device for gas source decompression of poppet valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203743581U true CN203743581U (en) | 2014-07-30 |
Family
ID=51343382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320731315.4U Expired - Lifetime CN203743581U (en) | 2013-11-19 | 2013-11-19 | Emergency device for gas source decompression of poppet valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203743581U (en) |
-
2013
- 2013-11-19 CN CN201320731315.4U patent/CN203743581U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |
|
| CX01 | Expiry of patent term |