CN202690450U - Frequency conversion starting-based screw air compressor starting system - Google Patents
Frequency conversion starting-based screw air compressor starting system Download PDFInfo
- Publication number
- CN202690450U CN202690450U CN 201220345252 CN201220345252U CN202690450U CN 202690450 U CN202690450 U CN 202690450U CN 201220345252 CN201220345252 CN 201220345252 CN 201220345252 U CN201220345252 U CN 201220345252U CN 202690450 U CN202690450 U CN 202690450U
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- Prior art keywords
- air compressor
- starting
- screw air
- screw
- frequency variator
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- 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
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Abstract
The utility model discloses a frequency conversion starting-based screw air compressor starting system which comprises a direct current switch power supply of 24V, a frequency converter, a PLC (programmable logic controller), a screw air compressor controller, a touch screen and a storage battery, wherein the direct current switch power supply of 24V is connected with a frequency converter operation control loop, the PLC, the screw air compressor controller and the touch screen and is used for providing a power supply; the PLC is connected with the touch screen through a communication cable and is also connected with a starting signal relay; the screw air compressor controller is connected with the frequency converter through a line and is used for controlling the on-off of the frequency converter operation control loop; the frequency converter is connected with a screw main machine; and the screw main machine is coaxially connected with a cooling fan. According to the system, the PLC is adopted to provide starting signals necessary for starting the screw air compressor, and the detection on starting failure state, restarting and output of fault alarming information are realized.
Description
Technical field
The utility model relates to tunnel construction special mechanical equipment field, is specially a kind of screw air compressor start-up system based on variable frequency starting of the inverter-fed traction locomotive that shield machine, TBM tunnel and other construction rail transport point use.
Background technique
The used inverter-fed traction locomotive of shield structure and TBM tunnel construction conveying all is equipped with air braking system, and source of compressed air commonly used is Piston Air Compressor now, and air supply pressure fluctuation is large, oil content is higher, vibration is large, integral protection is not high.
The screw air compressor supply gas pressure is stable, oil content is low, vibration is less, integral protection is higher, is adapted at using on the inverter-fed traction locomotive.But the used control system of air compressor is Alternating Current Power Supply on the screw rod on the market, and the inverter-fed traction locomotive only has frequency variator that Ac can be provided and is mingled with higher harmonics, can't be used for the electronic component of control system of air compressor.Although screw air compressor all with controller, can directly be controlled start and stop at air compressor, consider the operating mode of tunnel construction, the overwhelming majority time all need to directly be controlled at operator cabin the startup of screw air compressor, and air compressor is inverter supply.
Therefore, need to provide a kind of screw air compressor start-up system of suitable inverter-fed traction locomotive, be a problem of needing solution badly.
Summary of the invention
In order to overcome above-mentioned deficiency of the prior art, the utility model provides a kind of screw air compressor start-up system based on variable frequency starting, the utility model adopts PLC to provide screw air compressor to start required actuating signal, and can realize starting the detection of status of fail and restarting, and the output of fault alarm information.
The purpose of this utility model is achieved in that
A kind of screw air compressor start-up system based on variable frequency starting, comprise direct current 24V switch power 1, frequency variator 2, PLC3, screw air compressing machine controller 4, touch screen 8, storage battery 9, direct current 24V switch power 1 connect frequency variator 2 operation control loops, PLC3, screw air compressing machine controller 4 and touch screen 8, and power supply is provided, PLC3 is connected with touch screen 8 by telecommunication cable, is connected with simultaneously actuating signal relay 6; Screw air compressing machine controller 4 is by connection frequency variator 2, and control frequency variator 2 moves the break-make of control loops, and frequency variator 2 is connected with screw host 10, is connected with on the screw host 10 and its coaxial cooling fan that is connected 7.
Described frequency variator 2 connects promising its simultaneously provides the storage battery 9 of power supply;
Described PLC3 output point connects actuating signal relay 6, the remote activation terminal of the normally opened contact connecting screw rod air compressor controller 4 of actuating signal relay 6;
Described screw air compressing machine controller 4 connects starting relay 5, and the normally opened contact of starting relay 5 connects the DI terminal place of frequency variator 2;
In the operation control loop of described frequency variator 2, the negative pole of public termination direct current 24V switch power 1, DI terminal connect the positive pole of direct current 24V switch power 1 through the normally opened contact of starting relay 5.
Positive beneficial effect:The utility model 1, screw host adopt inverter supply to have the advantages such as startup is mild, impact is little, the life-span is long, effectively avoided starting moment to the impact of power supply and motor, prolonged device lifetime, and can carry out as required the energy-saving run transformation at any time, regulate in real time frequency variator output according to gas circuit pressure, further improve energy-saving effect; 2, provide actuating signal by PLC, can expand flexibly reliable operation; 3, detect and in time again to start after air compressor starts unsuccessfully, repeatedly export fault message to touch screen after the failure, make things convenient for driver to understand the air compressor state; 4, based on the existing PLC control system of inverter-fed traction locomotive and frequency variator start-up system, technology maturation, it is convenient to transform, and cost is not high.
Description of drawings
Fig. 1 is system schematic of the present utility model.
Among the figure be: direct current 24V switch power 1, frequency variator 2, PLC3, screw air compressing machine controller 4, air compressor starting relay 5, actuating signal relay 6, cooling fan 7, touch screen 8, storage battery 9, screw host 10.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described:
A kind of screw air compressor start-up system based on variable frequency starting, comprise direct current 24V switch power 1, frequency variator 2, PLC3, screw air compressing machine controller 4, touch screen 8, storage battery 9, direct current 24V switch power 1 connect frequency variator 2 operation control loops, PLC3, screw air compressing machine controller 4 and touch screen 8, and power supply is provided, PLC3 is connected with touch screen 8 by telecommunication cable, is connected with simultaneously actuating signal relay 6; Screw air compressing machine controller 4 is by connection frequency variator 2, and control frequency variator 2 moves the break-make of control loops, and frequency variator 2 is connected with screw host 10, is connected with on the screw host 10 and its coaxial cooling fan that is connected 7.
Described frequency variator 2 connects promising its simultaneously provides the storage battery 9 of power supply;
Described PLC3 output point connects actuating signal relay 6, the remote activation terminal of the normally opened contact connecting screw rod air compressor controller 4 of actuating signal relay 6;
Described screw air compressing machine controller 4 connects starting relay 5, and the normally opened contact of starting relay 5 connects the DI terminal place of frequency variator 2;
In the operation control loop of described frequency variator 2, the negative pole of public termination direct current 24V switch power 1, DI terminal connect the positive pole of direct current 24V switch power 1 through the normally opened contact of starting relay 5.
The control system component of screw-rod air compressor all is chosen as direct current 24V specification, the original cooling fan 7 of air compressor changes into screw host 10 coaxial, rotate with screw host 10, all the time in running order, the power of cooling fan 7 is generally at 80-120W, therefore need to suitably strengthen to power to screw host 10 and cooling fan 7 simultaneously to frequency variator 2 power of drive screw main frame, frequency variator 2 is by storage battery 9 power supplies of inverter-fed traction locomotive.
The remote activation terminal of screw air compressing machine controller 4 and common port are connected to the normally opened contact of actuating signal relay 6, the coil of actuating signal relay 6 is connected to PLC3 output point and common point, starting relay 5 normally opened contacts are connected between the DI terminal and common point of the frequency variator 2 of powering to screw host, and PLC3 links to each other with touch screen 8 by communication cable.
Working principle:Direct current 24V switch power 1 is connected, the PLC3 rear output point output signal that powers on, the coil of actuating signal relay 6 disconnects after connecting certain hour, its normally opened contact closes first and then disconnect, give air compressor controller 4 inputs effective actuating signal, the 5 coil conductings of air compressor starting relay, its normally opened contact is closed, frequency variator 2 operation control loops are connected, and begin to start screw host 10.
If air compressor does not successfully start at the appointed time, then PLC3 does not detect the run signal of frequency variator 2 feedbacks, again exports square signal, again attempts starting, if attempt at the appointed time all successfully not starting air compressor behind the several times, then export malfunction alarm.
When locomotive direct current 24V switch power 1 is closed, the PLC3 dead electricity, frequency variator operation control loop and screw air compressor control loop all disconnect, and air compressor shuts down.
Repeat said process when again starting air compressor.
The utility model 1, screw host adopt inverter supply to have the advantages such as startup is mild, impact is little, the life-span is long, effectively avoided starting moment to the impact of power supply and motor, prolonged device lifetime, and can carry out as required the energy-saving run transformation at any time, regulate in real time frequency variator output according to gas circuit pressure, further improve energy-saving effect; 2, provide actuating signal by PLC, can expand flexibly reliable operation; 3, detect and in time again to start after air compressor starts unsuccessfully, repeatedly export fault message to touch screen after the failure, make things convenient for driver to understand the air compressor state; 4, based on the existing PLC control system of inverter-fed traction locomotive and frequency variator start-up system, technology maturation, it is convenient to transform, and cost is not high.
Above embodiment only is used for illustrating preferred implementation of the present utility model; but the utility model is not limited to above-mentioned mode of execution; in the ken that described field those of ordinary skill possesses; any modification of doing within spirit of the present utility model and the principle, be equal to and substitute and improvement etc., it all should be encompassed within the technological scheme scope that the utility model asks for protection.
Claims (5)
1. based on a kind of screw air compressor start-up system of variable frequency starting, comprise direct current 24V switch power (1), frequency variator (2), PLC(3), screw air compressing machine controller (4), touch screen (8), storage battery (9), it is characterized in that: direct current 24V switch power (1) connects frequency variator (2) operation control loop, PLC(3), screw air compressing machine controller (4) and touch screen (8), and provide power supply, PLC(3) be connected with touch screen (8) by telecommunication cable, be connected with simultaneously actuating signal relay (6); Screw air compressing machine controller (4) is by connection frequency variator (2), the break-make of control frequency variator (2) operation control loop, frequency variator (2) is connected with screw host (10), is connected with on the screw host (10) and its coaxial cooling fan that is connected (7).
2. a kind of screw air compressor start-up system based on variable frequency starting according to claim 1, it is characterized in that: described frequency variator (2) connects promising its simultaneously provides the storage battery (9) of power supply.
3. a kind of screw air compressor start-up system based on variable frequency starting according to claim 1, it is characterized in that: described PLC(3) output point connects actuating signal relay (6), the remote activation terminal of the normally opened contact connecting screw rod air compressor controller (4) of actuating signal relay (6).
4. according to claim 1 or 3 described a kind of screw air compressor start-up systems based on variable frequency starting, it is characterized in that: described screw air compressing machine controller (4) connects starting relay (5), and the normally opened contact of starting relay (5) connects the DI terminal place of frequency variator (2).
5. a kind of screw air compressor start-up system based on variable frequency starting according to claim 1, it is characterized in that: in the operation control loop of described frequency variator (2), the negative pole of public termination direct current 24V switch power (1), DI terminal connect the positive pole of direct current 24V switch power (1) through the normally opened contact of starting relay (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220345252 CN202690450U (en) | 2012-07-17 | 2012-07-17 | Frequency conversion starting-based screw air compressor starting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220345252 CN202690450U (en) | 2012-07-17 | 2012-07-17 | Frequency conversion starting-based screw air compressor starting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202690450U true CN202690450U (en) | 2013-01-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220345252 Expired - Lifetime CN202690450U (en) | 2012-07-17 | 2012-07-17 | Frequency conversion starting-based screw air compressor starting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202690450U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437988A (en) * | 2013-08-29 | 2013-12-11 | 广西三威林产工业有限公司 | Air compressor control system |
| CN114738253A (en) * | 2022-03-18 | 2022-07-12 | 交控科技股份有限公司 | Rail vehicle air compressor start control circuit and method |
-
2012
- 2012-07-17 CN CN 201220345252 patent/CN202690450U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437988A (en) * | 2013-08-29 | 2013-12-11 | 广西三威林产工业有限公司 | Air compressor control system |
| CN103437988B (en) * | 2013-08-29 | 2016-01-06 | 广西三威林产工业有限公司 | Air compressor control system |
| CN114738253A (en) * | 2022-03-18 | 2022-07-12 | 交控科技股份有限公司 | Rail vehicle air compressor start control circuit and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA RAILWAY MANUFACTURING EQUIPMENT GROUP CO., L Free format text: FORMER NAME: CHINA RAILWAY TUNNELING EQUIPMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 450016 Zhengzhou economic and Technological Development Zone, Henan, No. Sixth Street, No. 99 Patentee after: CHINA RAILWAY ENGINEERING EQUIPMENT GROUP Co.,Ltd. Address before: 450016 Zhengzhou economic and Technological Development Zone, Henan, No. Sixth Street, No. 99 Patentee before: CHINA RAILWAY TUNNELING EQUIPMENT Co.,Ltd. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160425 Address after: 450016 Zhengzhou economic and Technological Development Zone, Henan, No. Sixth Street, No. 99 Patentee after: CHINA RAILWAY ENGINEERING EQUIPMENT GROUP TECHNOLOGY SERVICE Co.,Ltd. Address before: 450016 Zhengzhou economic and Technological Development Zone, Henan, No. Sixth Street, No. 99 Patentee before: CHINA RAILWAY ENGINEERING EQUIPMENT GROUP Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130123 |