CN204554005U - Pneumatic cut-off valve fast opening and closing device - Google Patents
Pneumatic cut-off valve fast opening and closing device Download PDFInfo
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- CN204554005U CN204554005U CN201520198529.9U CN201520198529U CN204554005U CN 204554005 U CN204554005 U CN 204554005U CN 201520198529 U CN201520198529 U CN 201520198529U CN 204554005 U CN204554005 U CN 204554005U
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- valve
- pneumatic cut
- closing device
- pneumatic
- pilot line
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Abstract
A kind of pneumatic cut-off valve fast opening and closing device, belongs to instrument automatic control field, is specifically related to a kind of pneumatic cut-off valve fast opening and closing device.Comprise the pneumatic cut-off valve (8) be arranged on nitrogen delivery pipe (7) and the pilot line (13) be connected with the actuator of pneumatic cut-off valve (8), suction tude (9) is connected with described pilot line (13), it is characterized in that: pilot line (13) simultaneously described in parallel connection of described suction tude (9) and caisson, caisson is that the switch of described pneumatic cut-off valve (8) provides required instrument supply gas when in described suction tude (9), instrument supply gas interrupts.Pneumatic cut-off valve fast opening and closing device of the present utility model also can be opened fast when instrument supply gas interrupts, and well ensures catalyst converter and equipment safety; Opening of pneumatic cut-off valve is promoted by spring force and pressure dual force, guarantees that valve is opened fast.
Description
Technical field
Pneumatic cut-off valve fast opening and closing device, belongs to instrument automatic control field, is specifically related to a kind of pneumatic cut-off valve fast opening and closing device.
Background technique
The effect of accident nitrogen valve is that two valves are opened fast when acroleic acid device interlock shutdown, rushes 2Mpa high pressure nitrogen fast and realizes nitrogen envelope, realize protection to catalyzer and device in device.Existing accident nitrogen valve is not considered because instrument supply gas interrupts the situation of interlock shutdown, in use well cannot ensure the safety of catalyzer and device.In addition because valve is in closed condition for a long time, before and after the excessive and valve of anvil cinder in pipeline friction, differential pressure is excessive, causes valve to open fast, causes very large hidden danger to the safety of device.
Summary of the invention
Problem to be solved in the utility model is: overcome the deficiencies in the prior art, also can open fast, the pneumatic cut-off valve fast opening and closing device of easy to use, good guarantee catalyst converter and equipment safety when providing a kind of instrument supply gas to interrupt.
The utility model solves the technological scheme that its technical problem adopts: this pneumatic cut-off valve fast opening and closing device, comprise the pneumatic cut-off valve be arranged on nitrogen delivery pipe and the pilot line be connected with the actuator of pneumatic cut-off valve, suction tude is connected with described pilot line, it is characterized in that: pilot line simultaneously described in parallel connection of described suction tude and caisson, caisson when in described suction tude, instrument supply gas interrupts for the switch of described pneumatic cut-off valve provides required instrument supply gas.
Preferably, described pneumatic cut-off valve has two, two pneumatic cut-off valve parallel connections, the break-make of co-controlling nitrogen delivery pipe; Described pneumatic cut-off valve and described pilot line one_to_one corresponding.
Described pilot line is connected successively after controlled filter reduction valve, solenoid valve and pneumatic amplifier and is connected with the actuator of pneumatic cut-off valve; Instrument supply gas moves pneumatic cut-off valve by pilot line pusher and closes.
Described caisson is gas holder, is connected after described suction tude series connection gas storage filtering pressure reducing valve with gas holder.
Preferably, described gas holder is provided with pressure meter.
Preferably, described gas holder is connected with the actuator of pneumatic cut-off valve by pipeline, promotes pneumatic cut-off valve and opens; Pipeline between described gas holder and actuator is provided with solenoid valve.
Compared with prior art, the beneficial effect that pneumatic cut-off valve fast opening and closing device of the present utility model has is:
1, pneumatic cut-off valve fast opening and closing device suction tude Parallel Control pipeline and caisson simultaneously; when in suction tude, instrument supply gas interrupts; instrument supply gas in caisson flows in actuator along pipeline; for the switch starting cut-off valve provides required instrument supply gas; when instrument supply gas in suction tude is sufficient; caisson is supplemented, easy to use, well protect catalyzer and equipment safety when instrument supply gas interrupts.
2, pneumatic cut-off valve has in parallel two, the break-make of co-controlling nitrogen gas delivery-line, and two pneumatic cut-off valves are controlled by different pilot line, well avoids because pneumatic cut-off valve cannot open the situation damaging catalyzer and equipment safety.
3, the actuator of pneumatic cut-off valve is connected with gas holder by pipeline, make opening of pneumatic cut-off valve rely on spring force and air pressure double-action to control, avoid the excessive problem causing pneumatic cut-off valve to open fast of friction differential pressure that is excessive or front and back caused because of anvil cinder.
Accompanying drawing explanation
Fig. 1 is the piping diagram of pneumatic cut-off valve fast opening and closing device.
In figure: 1, normal open solenoid valve 2, safety valve 3, pressure meter 4, controlled filter reduction valve 5, pneumatic amplifier 6, total valve 7, nitrogen delivery pipe 8, pneumatic cut-off valve 9, suction tude 10, gas holder 11, normal off solenoid valve 12, branch road valve 13, pilot line 14, gas storage filtering pressure reducing valve.
Embodiment
Fig. 1 is most preferred embodiment of the present utility model, is described further below in conjunction with accompanying drawing 1 pair of the utility model.
A kind of pneumatic cut-off valve fast opening and closing device, comprise the pneumatic cut-off valve 8 be arranged on nitrogen delivery pipe 7 and the pilot line 13 be connected with the actuator of pneumatic cut-off valve 8, suction tude 9 is connected with pilot line 13.Suction tude 9 is Parallel Control pipeline 13 and caisson simultaneously, caisson when the instrument supply gas of suction tude 9 interrupts for the open and close of pneumatic cut-off valve 8 provide required instrument supply gas.Pneumatic cut-off valve fast opening and closing device in suction tude 9 instrument supply gas interrupt time; instrument supply gas in caisson flows in actuator along pipeline; for the switch starting cut-off valve provides required instrument supply gas; when instrument supply gas in suction tude 9 is sufficient; caisson is supplemented; easy to use, well protect catalyzer and equipment safety when instrument supply gas interrupts.
Concrete: as shown in Figure 1: suction tude 9 is connected with one end of total valve 6, the other end parallel connection simultaneously two cover pilot line 13 of total valve 6 and one end of gas storage filtering pressure reducing valve 14, the other end of gas storage filtering pressure reducing valve 14 is connected with caisson by pipeline.Caisson is gas holder 10, and the effect of gas holder 10 stores instrument supply gas, for pneumatic cut-off valve 8 provides the instrument supply gas needed for switch when in suction tude 9, instrument supply gas interrupts.Two cover pilot line 13 are connected with the actuator of two pneumatic cut-off valves 8 respectively, control pneumatic cut-off valve 8 close by instrument supply gas; A branch road valve 12 is connected with between the pilot line 13 of below wherein and total valve 6.After two pneumatic cut-off valves 8 are in parallel in access nitrogen delivery pipe 7, the break-make of co-controlling nitrogen delivery pipe 7, avoids pneumatic cut-off valve 8 and cannot open the situation damaging catalyzer and equipment safety.
The top of gas holder 10 is provided with safety valve 2, and safety valve 2 can avoid the pressure in gas holder 10 to exceed safety value.The side of gas holder 10 is provided with pressure meter 3, can show the pressure in gas holder 10.
The actuator of two pneumatic cut-off valves 8 is connected with gas holder 10 respectively by pipeline, is respectively equipped with a normal off solenoid valve 11 between two pneumatic cut-off valves 8 and gas holder 10.The media end that enters of two normal off solenoid valves 11 is connected with gas holder 10 respectively, goes out the media end first via and is connected with the actuator of two pneumatic cut-off valves 8 respectively.Instrument supply gas in gas holder 10 moves pneumatic cut-off valve 8 by normal off solenoid valve 11 pusher and opens.Pneumatic cut-off valve 8 is opened under the dual force effect of spring force and air pressure, guarantees that pneumatic cut-off valve 8 is opened fast, avoids because the excessive problem causing pneumatic cut-off valve 8 to open fast of friction differential pressure that is excessive or front and back that causes of anvil cinder.
Pilot line 13 is connected successively, and controlled filter reduction valve 4, normal open solenoid valve 1 and pneumatic amplifier 5 are rear to be connected with the actuator of pneumatic cut-off valve 8.One end of the controlled filter reduction valve 4 of top is connected with total valve 6, and one end of the controlled filter reduction valve 4 of the pilot line 13 of below is connected with branch road valve 12.The other end of controlled filter reduction valve 4 is connected with the media end that enters of normal open solenoid valve 1, and the media end first via that goes out of normal open solenoid valve 1 is connected with the input end of pneumatic amplifier 5, and the output terminal of pneumatic amplifier 5 is connected with the actuator of pneumatic cut-off valve 8.Instrument supply gas moves pneumatic cut-off valve 8 by pilot line pusher and closes.
The working procedure of pneumatic cut-off valve fast opening and closing device is as follows:
During closing operation: two normal open solenoid valves 1 are in obtain electricity condition, the entering media end and go out the media end first via and be on state of normal open solenoid valve 1, goes out media end second tunnel and enters to close and be not vented; Two normal off solenoid valves 11 are in power failure state, and entering media end and going out the media end first via of normal off solenoid valve 11 is in off state, go out the exhaust of media end second tunnel.Air pressure makes it to both sides displacement by the iris action of pneumatic amplifier 5 pairs of pneumatic cut-off valves 8, Compress Spring, and pneumatic cut-off valve 8 is opened.
Opening operation: two normal open solenoid valves 1 are in power failure state, entering media end and going out the media end first via of normal open solenoid valve 1 is in off state, and the relief opening going out media end second road and pneumatic amplifier 5 is vented rapidly; Two normal off solenoid valves 11 are in obtain electricity condition, enter media end and go out the media end first via and be on state, go out media end second tunnel and close and be not vented, and the spring stretches of pneumatic cut-off valve 8 both sides also coordinates air pressure that pneumatic cut-off valve 8 is opened rapidly.
Gas holder 10 causes interlock shutdown during in total air failure, can ensure that pneumatic cut-off valve 8 is opened fast, catalyzer and device are played a protective role.
The above, it is only preferred embodiment of the present utility model, be not restriction the utility model being made to other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the Equivalent embodiments of equivalent variations.But everyly do not depart from technical solutions of the utility model content, any simple modification, equivalent variations and the remodeling done above embodiment according to technical spirit of the present utility model, still belong to the protection domain of technical solutions of the utility model.
Claims (6)
1. a pneumatic cut-off valve fast opening and closing device, comprise the pneumatic cut-off valve (8) be arranged on nitrogen delivery pipe (7) and the pilot line (13) be connected with the actuator of pneumatic cut-off valve (8), suction tude (9) is connected with described pilot line (13), it is characterized in that: pilot line (13) simultaneously described in parallel connection of described suction tude (9) and caisson, caisson is that the switch of described pneumatic cut-off valve (8) provides required instrument supply gas when in described suction tude (9), instrument supply gas interrupts.
2. pneumatic cut-off valve fast opening and closing device according to claim 1, is characterized in that: described pneumatic cut-off valve (8) has two, and two pneumatic cut-off valves (8) are in parallel, the break-make of co-controlling nitrogen delivery pipe (7); Described pneumatic cut-off valve (8) and described pilot line (13) one_to_one corresponding.
3. pneumatic cut-off valve fast opening and closing device according to claim 1 and 2, is characterized in that: connect successively controlled filter reduction valve (4), solenoid valve of described pilot line (13) is connected with the actuator of pneumatic cut-off valve (8) afterwards with pneumatic amplifier (5); Instrument supply gas moves pneumatic cut-off valve (8) by pilot line pusher and closes.
4. pneumatic cut-off valve fast opening and closing device according to claim 1, is characterized in that: described caisson is gas holder (10), and described suction tude (9) series connection gas storage filtering pressure reducing valve (14) is connected with gas holder (10) afterwards.
5. pneumatic cut-off valve fast opening and closing device according to claim 4, is characterized in that: described gas holder (10) is provided with pressure meter (3).
6. pneumatic cut-off valve fast opening and closing device according to claim 4, is characterized in that: described gas holder (10) is connected by the actuator of pipeline with pneumatic cut-off valve (8), promotes pneumatic cut-off valve (8) and opens; Pipeline between described gas holder (10) and actuator is provided with solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520198529.9U CN204554005U (en) | 2015-04-03 | 2015-04-03 | Pneumatic cut-off valve fast opening and closing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520198529.9U CN204554005U (en) | 2015-04-03 | 2015-04-03 | Pneumatic cut-off valve fast opening and closing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204554005U true CN204554005U (en) | 2015-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520198529.9U Active CN204554005U (en) | 2015-04-03 | 2015-04-03 | Pneumatic cut-off valve fast opening and closing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204554005U (en) |
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2015
- 2015-04-03 CN CN201520198529.9U patent/CN204554005U/en active Active
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |