CN201306269Y - Pressure constant device controlled by frequency converter - Google Patents
Pressure constant device controlled by frequency converter Download PDFInfo
- Publication number
- CN201306269Y CN201306269Y CNU2008201724015U CN200820172401U CN201306269Y CN 201306269 Y CN201306269 Y CN 201306269Y CN U2008201724015 U CNU2008201724015 U CN U2008201724015U CN 200820172401 U CN200820172401 U CN 200820172401U CN 201306269 Y CN201306269 Y CN 201306269Y
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- pressure
- pid
- frequency converter
- frequency
- air
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Abstract
The utility model relates to a pressure constant device in an air compression station used for textile industry and chemical industry and the like, in particular to a pressure constant device controlled by a frequency converter. The technical scheme of the utility model is that the device is formed by a pressure transmitter, a PID, a frequency converter, a contactor and a button, which are electrically connected with each other in sequence; the pressure transmitter is installed in a vacuum pot and used for transmitting the magnitude of the pressure into the PID; the pressure transmission signal is converted into current signal in the PID; and a PID pressure value is set; after compared with the PID pressure value, the pressure value measured actually is converted into current signals, and the current signals are transmitted to the frequency converter; the current signal thereof is utilized to control the frequency of the frequency converter; and the frequency converter is used to control the rotational speed of an air compressor so as to achieve the constant of the air pressure. The device has the beneficial effects that the air pressure of the air compression station can be controlled in a certain range and keeps constant on one hand, and on the other hand, the power consumption of the air compressor can be greatly reduced.
Description
One, technical field:
The utility model relates to air compression station constant pressure devices such as a kind of textile industry, chemical industry, particularly a kind of Frequency Converter Control constant pressure device.
Two, background technique:
The pressure size of air compression station is vital to the novel pneumatic equipment of textile industry, pressure is too small, the pneumatic element motion is slowed down, do not reach the performance requirement of equipment, and pressure is excessive, makes the pneumatic element excessive velocities, pneumatic element is damaged accelerate, cause the damage of equipment easily, and influence the quality requirement of product.And the motor that existing air compressor adopts, the starting time is too frequent, and electric current is excessive, and can not make the pressure of air compression station reach requirement.
Three, summary of the invention:
The purpose of this utility model is exactly the above-mentioned defective that exists at prior art, the Frequency Converter Control constant pressure device that provides a kind of power consumption within limits to significantly reduce.
Its technological scheme is: mainly be electrically connected successively by pressure converter, PID, frequency variator, contactor and button and form, setting pressure converter in true gas tank, the pressure converter connects PID, described PID send the current signal after varying signal is changed to be electrically connected frequency variator, the rotating speed of Frequency Converter Control air compressor by pressure.
Wherein, the pressure converter is delivered to the size change of pressure among the PID, in PID, send varying signal switching current signal with pressure, and set the PID force value, with actual record force value with it relatively after, be converted to current signal, be sent to frequency variator, utilize its current signal to control the frequency size of frequency variator, control the rotating speed of air compressor with frequency variator, to reach the constant of air pressure.
The beneficial effects of the utility model are: the air pressure of air compression station can be controlled in the certain limit and constant voltage on the one hand, can reduce the power consumption of air compressor on the other hand greatly.
Four, description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model.
Five, embodiment:
In conjunction with the accompanying drawings 1, the utility model will be further described:
Its technological scheme is: mainly by the pressure converter, PID, frequency variator, contactor and button are electrically connected composition successively, a pressure converter is installed in true gas tank, the size change of pressure is delivered among the PID, wherein the pressure of pressure converter conveying is generally within 0-100mpa, in PID, send varying signal switching current signal with pressure, Dui Ying scope is generally within 4-20mA with it, and set the PID force value, generally at 5.5mpa, with actual record force value with it relatively after, be converted to current signal, be sent to frequency variator, the frequency range of frequency variator generally is set within the 20-50HZ, utilize its current signal to control the frequency size of frequency variator, control the rotating speed of air compressor with frequency variator, to reach the constant of air pressure.The circuit elements device that foregoing circuit adopts is the existing known routine techniques of those of ordinary skill, no longer describes in detail herein and does not also limit.
The starting of frequency variator utilizes the normally opened contact fingertip control of contactor, external control just.As: the pressure that the pressure converter is transferred to PID is 5mpa, the current signal that its PID is transferred to frequency variator is 12mA, frequency variator will move on the frequency of 35HZ, if it is 6mpa that the pressure converter is transferred to the pressure of PID, the current signal that its PID is transferred to frequency variator is 10mA, and frequency variator will move on the frequency of 33HZ.
Claims (1)
1, a kind of Frequency Converter Control constant pressure device, it is characterized in that: mainly be electrically connected successively and form by pressure converter, PID, frequency variator, contactor and button, setting pressure converter in true gas tank, the pressure converter connects PID, described PID send the current signal after varying signal is changed to be electrically connected frequency variator, the rotating speed of Frequency Converter Control air compressor by pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201724015U CN201306269Y (en) | 2008-09-24 | 2008-09-24 | Pressure constant device controlled by frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201724015U CN201306269Y (en) | 2008-09-24 | 2008-09-24 | Pressure constant device controlled by frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201306269Y true CN201306269Y (en) | 2009-09-09 |
Family
ID=41098735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201724015U Expired - Fee Related CN201306269Y (en) | 2008-09-24 | 2008-09-24 | Pressure constant device controlled by frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201306269Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102781536A (en) * | 2010-02-12 | 2012-11-14 | 瑞典诺迪克有限公司 | Compressed air supply for the operation of moving bed filters |
| CN104747423A (en) * | 2013-12-31 | 2015-07-01 | Ls产电株式会社 | Method for controlling inverter |
| CN107246390A (en) * | 2017-05-25 | 2017-10-13 | 中国科学院合肥物质科学研究院 | A kind of control method of large-scale helium compressor station multistage pressure |
-
2008
- 2008-09-24 CN CNU2008201724015U patent/CN201306269Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102781536A (en) * | 2010-02-12 | 2012-11-14 | 瑞典诺迪克有限公司 | Compressed air supply for the operation of moving bed filters |
| EP2533875A1 (en) * | 2010-02-12 | 2012-12-19 | Nordic Water Products AB | Compressed air supply for the operation of moving bed filters |
| EP2533875A4 (en) * | 2010-02-12 | 2013-07-17 | Nordic Water Prod Ab | Compressed air supply for the operation of moving bed filters |
| CN104747423A (en) * | 2013-12-31 | 2015-07-01 | Ls产电株式会社 | Method for controlling inverter |
| CN104747423B (en) * | 2013-12-31 | 2017-03-29 | Ls产电株式会社 | Method for controlling an inverter |
| US9798296B2 (en) | 2013-12-31 | 2017-10-24 | Lsis Co., Ltd. | Method for controlling inverter |
| CN107246390A (en) * | 2017-05-25 | 2017-10-13 | 中国科学院合肥物质科学研究院 | A kind of control method of large-scale helium compressor station multistage pressure |
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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: 20090909 Termination date: 20100924 |