CN214579203U - Pneumatic valve switch control device - Google Patents
Pneumatic valve switch control device Download PDFInfo
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- CN214579203U CN214579203U CN202023154414.XU CN202023154414U CN214579203U CN 214579203 U CN214579203 U CN 214579203U CN 202023154414 U CN202023154414 U CN 202023154414U CN 214579203 U CN214579203 U CN 214579203U
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Abstract
The utility model provides a pneumatic valve on-off control device, a serial communication port, include: the self-operated electromagnetic valve and the one-way throttle valve are arranged outside the valve block, and the quick release valve and the pneumatic actuator are arranged inside the valve block; the common port of the gas path of the self-operated electromagnetic valve is connected with a quick release valve, the normally closed port of the gas path is communicated with the outside for releasing gas, and the normally opened port of the gas path is connected to a compressed air source for an instrument through a one-way throttle valve; the air passage common port of the quick release valve is connected with the cylinder of the pneumatic actuator, the normally closed air passage opening of the quick release valve is communicated with the outside for air release, and the normally opened air passage opening of the quick release valve is connected with the air passage common port of the self-operated electromagnetic valve. This application can prolong the life of solenoid valve, and the formula of relying on oneself solenoid valve need not compressed air power can open as long as electrified moreover, thereby both satisfies the opening time through one-way throttle valve control compressed air flow control ball valve, can avoid the influence of choke valve to lead to the problem that the solenoid valve can not open again.
Description
Technical Field
The utility model relates to a pneumatic valve on-off control device.
Background
The purge valve arranged in the gas turbine valve bank room pushes the valve to perform full-opening and full-closing actions by adopting a pneumatic actuating mechanism, the general pneumatic opening time is required to be 35 +/-5 seconds, and the closing time is slightly different according to the difference of the spring closing torque and is generally within 2 seconds.
In the prior art, the switching time of the purge valve is controlled by combining a pilot type electromagnetic valve, a one-way throttle valve and a quick release valve. The pilot-operated solenoid valves are all installed beside pneumatic valves of fuel modules, and the ambient temperature of the fuel module space where the valves are located in the normal operation of the unit is higher, so that premature aging of sealing rings of the solenoid valves can be caused, and the valves cannot normally operate due to air leakage of the solenoid valves. If the pilot-operated solenoid valve, the one-way throttle valve and the quick release valve are all moved to the outside of the valve block to be installed, although the problem of influence of a high-temperature environment on the solenoid valve can be solved, the quick release valve is too far away from the valve, so that the exhaust rate is reduced when the valve is closed, and the valve closing time exceeds 2 seconds. If the quick release valve is separately installed close to the valve, the pilot electromagnetic valve cannot be opened or the quick release valve cannot open the air inlet passage.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pneumatic valve on-off control device, because the valve on-off time control problem that the longer distance of solenoid valve apart from the valve body leads to in solving the gas turbine valves, its concrete technical content as follows:
a pneumatically actuated valve switch control device, comprising: the electromagnetic valve is arranged outside the valve block, and the quick release valve and the pneumatic actuator are arranged inside the valve block; the common port of the air passage of the electromagnetic valve is connected with a quick release valve, the normally closed port of the air passage is communicated with the outside for air release, and the normally opened port of the air passage is connected with a compressed air source for an instrument; the common gas path port of the quick release valve is connected with a cylinder of the pneumatic actuator, the normally closed gas path port of the quick release valve is communicated with the outside for releasing gas, and the normally opened gas path port of the quick release valve is connected with the common gas path port of the self-operated solenoid valve; and the ball valve of the pneumatic actuator realizes on/off control on the high-pressure air sweeping channel.
In one or more embodiments of the present invention, the electromagnetic valve is a self-operated electromagnetic valve.
In the middle of one or more embodiments of the utility model, establish the series connection and have one-way choke valve between self-operated solenoid valve and the compressed air source for the appearance, one-way choke valve is connected with the gas circuit normal open mouth of self-operated solenoid valve.
In one or more embodiments of the present invention, a first interface for introducing compressed air for instruments, a second interface for connecting high pressure air, and a third interface for introducing high pressure air are provided between the valve sets; the first interface is used for connecting a solenoid valve arranged outside the valve block and a quick release valve arranged inside the valve block; a high-pressure air blowing channel is arranged between the second connector and the third connector, and the ball valve of the pneumatic actuator is arranged on the high-pressure air blowing channel.
The utility model has the advantages that: the electromagnetic valve and the one-way throttle valve which are originally arranged between the valve groups are moved out of the valve groups, so that the service life of the electromagnetic valve can be prolonged; in order to reduce the air pipes for arranging the instrument, the parallel one-way throttle valves are changed into serial connection arrangement, meanwhile, the electromagnetic valves are replaced by self-operated electromagnetic valves, and the electromagnetic valves can be opened without compressed air power as long as the electromagnetic valves are electrified, so that the opening time of the ball valve is controlled by controlling the flow of compressed air entering the pneumatic actuator through the one-way throttle valves, and the problem that the electromagnetic valves cannot be opened due to the influence of the throttle valves can be solved. In addition, due to the limited space of the fuel module (namely in the valve group), the electromagnetic valve is inconvenient to replace after each abnormal condition occurs, and the electromagnetic valve can be replaced within a few minutes after the electromagnetic valve is displaced.
Drawings
FIG. 1 is a schematic diagram of a prior art pneumatic valve switch control circuit.
Fig. 2 is a schematic view of the pneumatic valve switch control device of the present invention.
Detailed Description
The application is further described below with reference to the accompanying drawings:
referring to fig. 2, a pneumatically actuated valve on-off control device includes: the self-operated electromagnetic valve 1 and the one-way throttle valve 2 are arranged outside the valve block, and the quick release valve 3 and the pneumatic actuator 4 are arranged inside the valve block; the common port 1A of the gas circuit of the self-operated electromagnetic valve 1 is connected with a quick release valve 3, the normally closed port 1B of the gas circuit is externally used for releasing gas, and the normally open port 1C of the gas circuit is connected to a compressed air source for an instrument through a one-way throttle valve 2; the air passage common port 3A of the quick release valve 3 is connected with the cylinder 41 of the pneumatic actuator 4, the air passage normally closed port 3B is externally used for releasing air, and the air passage normally open port 3C is connected with the air passage common port 1A of the self-operated electromagnetic valve 1; the ball valve 42 of the pneumatic actuator 4 controls the on/off of the high-pressure air purge passage. Correspondingly, a first interface for introducing instrument compressed air, a second interface for connecting high-pressure air and a third interface for introducing high-pressure air are arranged between the valve groups; the first interface is used for connecting a solenoid valve arranged outside the valve block and a quick release valve arranged inside the valve block; a high-pressure air blowing channel is arranged between the second connector and the third connector, and the ball valve of the pneumatic actuator is arranged on the high-pressure air blowing channel.
With the combination of the attached drawings 1 and 2, the electromagnetic valve and the one-way throttle valve which are originally arranged between the valve groups are moved to the outside of the valve groups, so that a high-temperature environment is avoided, and the service life of the electromagnetic valve can be prolonged; in order to reduce air pipes for arranging instruments, original parallel one-way throttle valves are changed into serial arrangement, meanwhile, pilot-operated solenoid valves are replaced by self-operated solenoid valves, the pilot-operated solenoid valves can be opened only by certain compressed air pressure when electrified, the self-operated solenoid valves can be opened only by electrification without compressed air power, and the situation that the solenoid valves cannot be opened due to the influence of the throttle valves can be avoided.
The valve is fully opened:
the self-operated electromagnetic valve 1 is powered on, the valve core of the self-operated electromagnetic valve 1 is switched to work positions, the air path common port 1A of the self-operated electromagnetic valve 1 is communicated with the air path normally open port 1C, the air path normally closed port 1B is not ventilated, and instrument air can be communicated to the air path normally open port 1C from the air path common port 1A of the self-operated electromagnetic valve 1 and enters the pneumatic quick release valve 3. Due to the action of air pressure, the working position of the quick release valve 3 is switched, the air passage common port 3A of the quick release valve 3 is communicated with the air passage normally open port 3C, and the air passage normally closed port 3B is not ventilated. Instrument air is communicated to the air passage normal opening 3C from the air passage common opening 3A of the quick release valve 3 and enters the air cylinder 41 of the pneumatic actuator 4, and the instrument air is compressed in the air cylinder 41 to generate pressure to overcome the spring force at the lower part of the air cylinder 41, so that the ball valve 42 is driven to be fully opened. In the process, the flow rate of the compressed air for the instrument entering the pneumatic actuator 4 can be controlled by adjusting the one-way throttle valve 2, so that the opening time of the ball valve 42 is controlled.
The valve is completely closed:
when the self-operated electromagnetic valve 1 is powered off, the valve core of the self-operated electromagnetic valve is switched to the working position, the common port 1A of the air passage of the self-operated electromagnetic valve 1 is communicated with the normally closed port 1B of the air passage, and compressed air for instruments is discharged from the normally closed port 1B of the air passage. Because the air pressure is lost, the quick release valve 3 switches working positions, the common port 3A of the air passage is communicated with the normally closed port 3B of the air passage, compressed air for instruments is released from the normally closed port 3B of the air passage, and the air cylinder 41 drives the ball valve 42 to close due to the fact that the upper air pressure is released and the spring force is released.
The above preferred embodiments should be considered as examples of the embodiments of the present application, and technical deductions, substitutions, improvements and the like similar to, similar to or based on the embodiments of the present application should be considered as the protection scope of the present patent.
Claims (4)
1. A pneumatically actuated valve on-off control device, comprising: the electromagnetic valve is arranged outside the valve block, and the quick release valve and the pneumatic actuator are arranged inside the valve block;
the common port of the air passage of the electromagnetic valve is connected with a quick release valve, the normally closed port of the air passage is communicated with the outside for air release, and the normally opened port of the air passage is connected with a compressed air source for an instrument;
the common gas path port of the quick release valve is connected with a cylinder of the pneumatic actuator, the normally closed gas path port of the quick release valve is communicated with the outside for releasing gas, and the normally opened gas path port of the quick release valve is connected with the common gas path port of the self-operated solenoid valve;
and the ball valve of the pneumatic actuator realizes on/off control on the high-pressure air sweeping channel.
2. The pneumatic valve on-off control device of claim 1, wherein: the electromagnetic valve is a self-operated electromagnetic valve.
3. The pneumatically actuated valve switch control device of claim 2, wherein: the self-operated electromagnetic valve and the compressed air source for the instrument are connected in series with a one-way throttle valve, and the one-way throttle valve is connected with a normally open port of an air passage of the self-operated electromagnetic valve.
4. A pneumatically actuated valve switch control device as claimed in any of claims 1-3, wherein: a first interface for introducing instrument compressed air, a second interface for connecting high-pressure air and a third interface for introducing high-pressure air are arranged between the valve groups; the first interface is used for connecting a solenoid valve arranged outside the valve block and a quick release valve arranged inside the valve block; a high-pressure air blowing channel is arranged between the second connector and the third connector, and the ball valve of the pneumatic actuator is arranged on the high-pressure air blowing channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023154414.XU CN214579203U (en) | 2020-12-24 | 2020-12-24 | Pneumatic valve switch control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023154414.XU CN214579203U (en) | 2020-12-24 | 2020-12-24 | Pneumatic valve switch control device |
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| Publication Number | Publication Date |
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| CN214579203U true CN214579203U (en) | 2021-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023154414.XU Active CN214579203U (en) | 2020-12-24 | 2020-12-24 | Pneumatic valve switch control device |
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| CN (1) | CN214579203U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023155406A1 (en) * | 2022-02-15 | 2023-08-24 | 中船动力研究院有限公司 | Valve control device applied to waste gas treatment system |
-
2020
- 2020-12-24 CN CN202023154414.XU patent/CN214579203U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023155406A1 (en) * | 2022-02-15 | 2023-08-24 | 中船动力研究院有限公司 | Valve control device applied to waste gas treatment system |
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