CN201723802U - Automatic control device of gas pressure - Google Patents
Automatic control device of gas pressure Download PDFInfo
- Publication number
- CN201723802U CN201723802U CN2010202428459U CN201020242845U CN201723802U CN 201723802 U CN201723802 U CN 201723802U CN 2010202428459 U CN2010202428459 U CN 2010202428459U CN 201020242845 U CN201020242845 U CN 201020242845U CN 201723802 U CN201723802 U CN 201723802U
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- China
- Prior art keywords
- pressure
- gas
- valve
- automatic control
- valve body
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- Expired - Fee Related
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Abstract
The utility model discloses an automatic control device of gas pressure, which is arranged on a gas transmission pipeline of a gas source and a working system and comprises a pneumatic control valve and a pressure adjusting knob, wherein the pneumatic control valve comprises a valve body and a valve core, the pressure adjusting knob is sleeved at one end of the valve body, the other end of the valve body is provided with a pneumatic control port which is communicated with the working system, and a spring is arranged between the pressure adjusting knob and the valve core. The device has simple structure and reasonable design, the automatic control of system pressure is realized only by the simple structure that the pressure adjusting knob and the spring are additionally arranged on the pneumatic control valve, a solenoid valve is not needed for controlling the switch, and the security problem of explosion-proof environment is solved.
Description
Technical field
The utility model relates to a kind of automatic control device for gas pressure.
Background technique
At present in real work gas pressure to control application automatically very extensive, mainly control automatically by pressure transmitter and the incompatible solution pressure of electromagnetic valve group, the gas pressure transmitter mainly is made up of load cell, modular circuit, display gauge head, watchcase and process link etc.The gas pressure transmitter is used to measure the density and the pressure of pressurized gas or steam, then pressure signal is transformed into the output of 4～20mA DC signal.Pressure and voltage or size of current are linear, it generally is proportional relation, so, the voltage or the electric current of transmitter output increase with pressure, draw the relation of a pressure and voltage or electric current thus, secondary meters such as indicator alarm, recorder, regulator are measured to supply with, indication and process are regulated.
The gas pressure automatic control system in prior art field becomes gas pressure into electrical signal for transmission by the gas pressure transmitter, realizes automatic control by solenoid valve again.The folding of solenoid valve is easy to generate spark, has very big potential safety hazard, can't adapt to particular surroundingss such as inflammable and explosive.
Summary of the invention
In order to overcome the above-mentioned defective that the prior art field exists, the purpose of this utility model is, a kind of automatic control device for gas pressure is provided, and is simple in structure, reasonable in design, safe.
The automatic control device for gas pressure that the utility model provides, be arranged on the air delivering pipeline of source of the gas and work system, it comprises Pneumatic valve, pressure adjustment knob, Pneumatic valve comprises valve body, spool, pressure adjustment knob is sleeved on valve body one end, the valve body the other end is provided with the gas control mouth, and the gas control mouth is communicated with work system, is provided with spring between pressure adjustment knob and the spool.
When the pressure of gas control mouth during less than the pressure of spring, then spool is in right-hand member, this moment, source of the gas and work system were connected, when the pressure of gas control mouth during greater than the pressure of spring, spool moves to left end under the effect of work system pressure, this moment, source of the gas and work system disconnected, so just, the auto switching of gas circuit can be realized, the pressure size of control gas circuit can be set by pressure adjustment knob.
The automatic control device for gas pressure that the utility model provides, its beneficial effect is, this apparatus structure is simple, reasonable in design, only on Pneumatic valve, install the simple structure of pressure adjustment knob and spring additional, just realized auto-control to system pressure, need not solenoid valve and come control switch, solve the safety problem of explosion-proof environment.
Description of drawings
Fig. 1 is an embodiment's of the utility model an overall structure schematic representation.
Mark among the figure:
1. pressure adjustment knob; 2. spring; 3. spool; 4. gas control mouth; 5. valve body.
A, B, R, P, S are the Pneumatic valve opening
Embodiment
With reference to the accompanying drawings, in conjunction with the embodiments, the automatic control device for gas pressure that the utility model is provided is described in detail
Embodiment
With reference to Fig. 1, the automatic control device for gas pressure of present embodiment, be arranged on the air delivering pipeline of source of the gas and work system, it comprises Pneumatic valve, pressure adjustment knob 1, Pneumatic valve comprises valve body 5, spool 3, and pressure adjustment knob 1 is sleeved on valve body 5 one ends, and the other end of valve body 5 is provided with gas control mouth 4, gas control mouth 4 is communicated with work system, is provided with spring 2 between pressure adjustment knob 1 and the spool 3.
When the pressure of gas control mouth 4 during less than the pressure of spring 2, then spool 3 is in right-hand member, the logical P of A this moment, and B lead to S, source of the gas and work system connection; When the pressure of gas control mouth 4 during greater than the pressure of spring 2, spool 3 moves to left end under the effect of work system pressure, the logical R of A this moment, B leads to P, and source of the gas and work system disconnect, so just, the auto switching of gas circuit can be realized, the pressure size of control gas circuit can be set by pressure adjustment knob 1.
Claims (1)
1. automatic control device for gas pressure, be arranged on the air delivering pipeline of source of the gas and work system, it is characterized in that: it comprises Pneumatic valve, pressure adjustment knob, Pneumatic valve comprises valve body, spool, pressure adjustment knob is sleeved on valve body one end, the valve body the other end is provided with the gas control mouth, and the gas control mouth is communicated with work system, is provided with spring between pressure adjustment knob and the spool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202428459U CN201723802U (en) | 2010-06-30 | 2010-06-30 | Automatic control device of gas pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202428459U CN201723802U (en) | 2010-06-30 | 2010-06-30 | Automatic control device of gas pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201723802U true CN201723802U (en) | 2011-01-26 |
Family
ID=43492132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202428459U Expired - Fee Related CN201723802U (en) | 2010-06-30 | 2010-06-30 | Automatic control device of gas pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201723802U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542151A (en) * | 2013-10-21 | 2014-01-29 | 北京天地玛珂电液控制***有限公司 | Hydraulic-control switch throttle valve |
-
2010
- 2010-06-30 CN CN2010202428459U patent/CN201723802U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542151A (en) * | 2013-10-21 | 2014-01-29 | 北京天地玛珂电液控制***有限公司 | Hydraulic-control switch throttle valve |
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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: 20110126 Termination date: 20120630 |