CN204140356U - A kind of mine air compressor control system based on PLC - Google Patents
A kind of mine air compressor control system based on PLC Download PDFInfo
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- CN204140356U CN204140356U CN201420571013.XU CN201420571013U CN204140356U CN 204140356 U CN204140356 U CN 204140356U CN 201420571013 U CN201420571013 U CN 201420571013U CN 204140356 U CN204140356 U CN 204140356U
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Abstract
The utility model discloses a kind of mine air compressor control system based on PLC, it is characterized in that: the power supply comprising PLC and be connected with its input end, pressure transmitter and multichannel air-break switch one end, PLC output terminal is connected with frequency variator, frequency variator is connected with the multichannel air-break switch the other end, multichannel air-break switch is also connected with multichannel motor, multichannel motor is connected with multichannel air compressor, multichannel air compressor is connected with gas storage and steam line, and steam line is connected with the input end of described pressure transmitter.In control system of air compressor of the present utility model, the introducing of PLC greatly simplifies the operation of air compressor system, saves manpower and improves the safety and stability of system.Control system of air compressor based on PLC and frequency variator makes staff can complete work in every under the control of computer collection, significantly reduces the labor intensity of workman, dramatically saves on human resources required in production, has also ensured the safety of production and system.
Description
Technical field
The utility model relates to coal mine control apparatus technical field, especially relates to a kind of mine air compressor control system based on PLC.
Background technique
Air compressor is one of important four large fixed equipments of mining production, and it produces pressurized air, in order to drive the equipment such as rock drill, pneumatic mucking machine and other pneumatic tool.Its safety work directly affects output and the benefit of coal production.The factor affecting its safety in production mainly contains overtemperature, the superpressure of air compressor, cuts off the water supply, oil-break etc.
Along with the modern development in colliery, the requirement of bargh to mining equiment is more and more higher, and building security mine has become the core that coal production is built.Mining equiment is constantly updated, and constantly progress, reliability, ease for operation, supervision property, easy-maintenance etc. have been the most basic require that.With relay composition control circuit poor reliability, not easy care, not easily monitor, can not adapt to current requirement.Now, easy care high in the urgent need to reliability, easy to operate, can monitor and the not high controller of price to the circuit replacing relay to form.Along with the develop rapidly of electronic technology, software engineering, control technique, programmable controller (PLC) development is swift and violent, and performance is very high, and price is comparatively reasonable, has very large advantage with the control circuit ratio of relay group.Many mining equiments have selected PLC to replace important control apparatus.Traditional proterctive equipment mainly adopts separation instrument, and its poor reliability, collection degree are low, costly, effectively can not meet the requirement of Economy that mining equiment drops into and Security.
Model utility content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, a kind of mine air compressor control system based on PLC is provided, in control system of air compressor of the present utility model, the introducing of PLC greatly simplifies the operation of air compressor system, saves manpower and improves the safety and stability of system.Control system of air compressor based on PLC and frequency variator makes staff can complete work in every under the control of computer collection, significantly reduces the labor intensity of workman, dramatically saves on human resources required in production, has also ensured the safety of production and system.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of mine air compressor control system based on PLC, it is characterized in that: the power supply comprising PLC and be connected with its input end, pressure transmitter and multichannel air-break switch one end, described PLC output terminal is connected with frequency variator, described frequency variator is connected with the multichannel air-break switch the other end, described multichannel air-break switch is also connected with multichannel motor, described multichannel motor is connected with multichannel air compressor, described multichannel air compressor is connected with gas storage and steam line, described steam line is connected with the input end of described pressure transmitter.
Above-mentioned a kind of mine air compressor control system based on PLC, is characterized in that: be also connected with multi-way detecting between described PLC and multichannel air compressor and become and send device.
Above-mentioned a kind of mine air compressor control system based on PLC, is characterized in that: described PLC is also connected with upper-position unit, warning device.
Above-mentioned a kind of mine air compressor control system based on PLC, is characterized in that: described PLC is also connected with pressure transducer, current sensor.
Above-mentioned a kind of mine air compressor control system based on PLC, is characterized in that: described pressure transmitter is arranged on gas storage and the steam line mouth of pipe.
Above-mentioned a kind of mine air compressor control system based on PLC, is characterized in that: described PLC adopts the S7-300 series of PLC of SIEMENS company.
Above-mentioned a kind of mine air compressor control system based on PLC, is characterized in that: Siemens MM440 frequency variator selected by described frequency variator.
The utility model compared with prior art has the following advantages:
In control system of air compressor of the present utility model, the introducing of PLC greatly simplifies the operation of air compressor system, saves manpower and improves the safety and stability of system.Control system of air compressor based on PLC and frequency variator makes staff can complete work in every under the control of computer collection, significantly reduces the labor intensity of workman, dramatically saves on human resources required in production, has also ensured the safety of production and system.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is mine air compressor control system sketch of the present utility model;
Fig. 2 is mine air compressor control system Variable Frequency Speed Regulation Principle block diagram of the present utility model;
Fig. 3 is mine air compressor control system main circuit schematic diagram of the present utility model;
Fig. 4 is mine air compressor control system PLC controller architecture block diagram of the present utility model.
Embodiment
As shown in Figure 1, a kind of mine air compressor control system based on PLC, it is characterized in that: the power supply 2 comprising PLC 1 and be connected with its input end, pressure transmitter 3 and multichannel air-break switch 5 one end, described PLC 1 output terminal is connected with frequency variator 4, described frequency variator 4 is connected with multichannel air-break switch 5 the other end, described multichannel air-break switch 5 is also connected with multichannel motor 6, described multichannel motor 6 is connected with multichannel air compressor 7, described multichannel air compressor 7 is connected with gas storage and steam line 8, described steam line 8 is connected with the input end of described pressure transmitter 3.
Wherein, Siemens MM440 frequency variator selected by described frequency variator 4, and described PLC 1 adopts the S7-300 series of PLC of SIEMENS company.
PLC is made up of power supply, CPU, analog input, output module, On-off signal, output module etc.It is used for realizing the control of electric part.Comprise five parts: start, run, stop, switching, report to the police and fault self-diagnosis, as shown in Figure 4.
Before startup, the unit switch of frequency variator is placed in the unit for work, working mode selection is placed in frequency conversion position, the control switch of PLC is placed in running state, presses start button, unit operation.The pressure transmitter being contained in gas storing pipe air outlet changes the pressure of gas holder into electrical signal gives PLC, output voltage and the reverse frequency that control signal removes to control frequency variator is produced by PLC, to regulate the rotating speed of motor, reach the object of required pressure.
First, 1# air compressor variable frequency starting, rotating speed is started from scratch rising, if when reaching default upper frequency limit value 50Hz, after time delay a period of time, the pressure in bellows chamber outlet port still can not reach default force value (0.55 ~ 0.65MPa), then by the break-make controlling auxiliary reclay, 1# air compressor is switched to power frequency operation by PLC, 2# air compressor is switched to frequency conversion state, variable frequency starting 2# air compressor simultaneously.If when 2# air compressor reaches upper frequency limit, still can not meet the demands after time delay a period of time, more automatically 2# air compressor is switched to power frequency operation, variable frequency starting 3# air compressor.When reducing with air quantity, if when 3 air compressors run simultaneously, 3# air compressor converting operation and now the frequency of frequency variator drops to the lower limit 20Hz of frequency time, then automatically stop 1# air compressor, if can't meet the demands, then automatically stop the operation of 2# air compressor.When air compressor occurs that organism temperature is too high in the process run, lubricating oil temperature is too high, and bellows chamber temperature is too high, subpackage overpressure and lubricating oil pressure too high, during the fault such as to cut off the water supply, system can send acoustooptic alarm signal, points out relevant staff to fix a breakdown in time.
In addition, system can realize M1, and M2, M3 power frequency, frequency conversion switch mutually.During beginning, if 1# air compressor variable frequency starting, rotating speed from 0 with frequency rise, as frequency converter frequency reach 50Hz and now air pressure also in lower limit, after time delay a period of time (avoiding the misoperation caused due to interference), 1# air compressor switches to power frequency operation, frequency converter frequency drops to 0Hz by 50Hz simultaneously, and 2# air compressor varying frequency starting, as air pressure does not still meet, then can start 3# air compressor, handoff procedure is the same; Equally, if 3 air compressors (supposing 1#, 2#, 3#) are all in operation, 3# air compressor converting operation drops to 0HZ, now air pressure is still in CLV ceiling limit value, 1# air compressor is then made to stop after time delay a period of time, frequency converter frequency rises rapidly from 0HZ, if now supply gas pressure is still in CLV ceiling limit value, then makes 2# air compressor machine stop after time delay a period of time.Such handoff procedure, the frequent start-stop of effective minimizing air compressor, simultaneously before actual pipe network is made a response to air supply pressure fluctuation, because frequency variator regulates rapidly, make air pressure smooth transition, thus effectively avoid down-hole pneumatic tool and occur for the situation of unsaturated vapor.
As shown in Figure 2, when under auto state, system starts, first KM2 adhesive, 1# air compressor starts under Frequency Converter Control, and time delay 5s(time delay is to allow pressure stability get off) output frequency of PLC to frequency variator detect.When detecting that frequency variator lower frequency limit signal then closes 1# air compressor; Otherwise when the then PLC execution increase air compressor action of frequency variator upper limiting frequency signal being detected: KM2 disconnects, KM1 adhesive, 1# air compressor changes power frequency operation into and time delay 1s(time delay one is to allow the abundant blow-out of switch, to allow frequency variator deceleration be 0, KM4 adhesive variable frequency starting 2# air compressor on the other hand.In order to protect air compressor and frequency variator, between KM1 and the KM2 of 1# air compressor, carry out electrical interlocks.After 2# air compressor drops into converting operation, time delay 5s PLC continues to detect frequency variator output frequency, when detecting that frequency variator lower frequency limit signal then closes 1# air compressor, remaining 2# air compressor runs under frequency conversion state, if time delay 5s PLC detects frequency variator lower frequency limit signal again, 2# air compressor is also closed; Otherwise when detect frequency variator upper limiting frequency signal then PLC perform again and increase pump action: KM3 disconnects, KM4 adhesive, and 2# air compressor changes power frequency operation into and time delay 1s, KM6 adhesive variable frequency starting 3# air compressor.The rest may be inferred, and after 3# air compressor drops into converting operation, time delay 5s, PLC continue to detect to determine to perform to increase or reduce air compressor action to meet constant pressure air feeding object to frequency variator output frequency.Conveniently trouble shooting maintenance in addition.Add indicating fault and malfunction alarm output in the design, frequency variator itself has the function such as short-circuit protection, overload protection, only the auxiliary contact such as fault output point, contactor, thermorelay of frequency variator need be received PLC.PLC, by these input points of program scanning, if broken down, makes corresponding action.As detected there is overload situations in an air compressor, then cut off the contactor of this air compressor and drop into air compressor for subsequent use, exporting trouble signal simultaneously, to facilitate inspection on-call maintenance.
In the present embodiment, described PLC 1 is also connected with pressure transducer, current sensor.In conjunction with PLC internal time relay, can to cut off the water supply to motor overload, over current of motor, electric motor starting overload, motor operating overload, air compressor, the malfunction alarm such as oil-break, and perform relevant protection act.During due to above-mentioned two kinds of normal operation of sensor, all export 4 ~ 20mA current signal to PLC analog input module.Be converted to 200 ~ 1000 digital signals through the inner A/D of PLC, and when sensor degradation or broken string, can not output signal to PLC, the input signal digital value detected by PLC will lower than 200.The faults such as sensor broken string can be judged accordingly.
As shown in Figure 3, in hardware design, adopt the motor of a Frequency Converter Control three air compressors to run, the operation of three motors has frequency conversion/power frequency two states, and every platform motor all needs to be connected with frequency conversion out-put supply with power frequency supply by two contactors.Access an automatic air-break switch before frequency variator input power, realize the over-current and-load protection connection of motor, frequency variator, the capacity of air-break switch is determined according to the rated current of motor.Also need to access same automatic air-break switch below power frequency supply, the over-current and-load protection realizing motor is connected.Also need to access automatic air-break switch before the 220V input power of PLC, ensure the normal operation of PLC.The selection of all contactors all suitably will be selected according to the capacity of motor.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every above embodiment is done according to the utility model technical spirit any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solutions of the utility model.
Claims (7)
1. the mine air compressor control system based on PLC, it is characterized in that: the power supply (2) comprising PLC (1) and be connected with its input end, pressure transmitter (3) and multichannel air-break switch (5) one end, described PLC (1) output terminal is connected with frequency variator (4), described frequency variator (4) is connected with multichannel air-break switch (5) the other end, described multichannel air-break switch (5) is also connected with multichannel motor (6), described multichannel motor (6) is connected with multichannel air compressor (7), described multichannel air compressor (7) is connected with gas storage and steam line (8), described steam line (8) is connected with the input end of described pressure transmitter (3).
2. according to a kind of mine air compressor control system based on PLC according to claim 1, it is characterized in that: be also connected with multi-way detecting between described PLC (1) and multichannel air compressor (7) and become and send device.
3., according to a kind of mine air compressor control system based on PLC according to claim 1, it is characterized in that: described PLC (1) is also connected with upper-position unit, warning device.
4., according to a kind of mine air compressor control system based on PLC according to claim 1, it is characterized in that: described PLC (1) is also connected with pressure transducer, current sensor.
5. according to a kind of mine air compressor control system based on PLC according to claim 1, it is characterized in that: described pressure transmitter (3) is arranged on gas storage and steam line (8) mouth of pipe.
6. according to a kind of mine air compressor control system based on PLC according to claim 1, it is characterized in that: described PLC (1) adopts the S7-300 series of PLC of SIEMENS company.
7. according to a kind of mine air compressor control system based on PLC according to claim 1, it is characterized in that: Siemens MM440 frequency variator selected by described frequency variator (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420571013.XU CN204140356U (en) | 2014-09-30 | 2014-09-30 | A kind of mine air compressor control system based on PLC |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420571013.XU CN204140356U (en) | 2014-09-30 | 2014-09-30 | A kind of mine air compressor control system based on PLC |
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| CN204140356U true CN204140356U (en) | 2015-02-04 |
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| CN201420571013.XU Expired - Fee Related CN204140356U (en) | 2014-09-30 | 2014-09-30 | A kind of mine air compressor control system based on PLC |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105937492A (en) * | 2015-10-16 | 2016-09-14 | 江苏兴达钢帘线股份有限公司 | Automatic constant-pressure control device of air compressor |
| CN106224222A (en) * | 2016-09-13 | 2016-12-14 | 深圳市格瑞拓能源科技有限公司 | A kind of air compressor machine station constant pressure control method and system |
| CN106286252A (en) * | 2016-09-13 | 2017-01-04 | 深圳市格瑞拓能源科技有限公司 | A kind of multiple stage air compressor linkage energy-saving control method and system |
| CN106523340A (en) * | 2016-12-26 | 2017-03-22 | 广东艾高装备科技有限公司 | Broken line fault treatment system and method for pressure sensor of variable frequency air compressor |
| CN109469602A (en) * | 2017-09-07 | 2019-03-15 | 阿耐思特岩田株式会社 | The control method of compressed gas feedway and compressed gas feedway |
| CN109958609A (en) * | 2019-05-06 | 2019-07-02 | 重庆建工市政交通工程有限责任公司 | Tunnel frequency conversion air compressor group intelligent power air feed system and construction method |
| CN113791606A (en) * | 2021-09-17 | 2021-12-14 | 上海斯可络压缩机有限公司 | Self-diagnosis system for screw compressor controller |
-
2014
- 2014-09-30 CN CN201420571013.XU patent/CN204140356U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105937492A (en) * | 2015-10-16 | 2016-09-14 | 江苏兴达钢帘线股份有限公司 | Automatic constant-pressure control device of air compressor |
| CN106224222A (en) * | 2016-09-13 | 2016-12-14 | 深圳市格瑞拓能源科技有限公司 | A kind of air compressor machine station constant pressure control method and system |
| CN106286252A (en) * | 2016-09-13 | 2017-01-04 | 深圳市格瑞拓能源科技有限公司 | A kind of multiple stage air compressor linkage energy-saving control method and system |
| CN106523340A (en) * | 2016-12-26 | 2017-03-22 | 广东艾高装备科技有限公司 | Broken line fault treatment system and method for pressure sensor of variable frequency air compressor |
| CN106523340B (en) * | 2016-12-26 | 2019-10-08 | 广东艾高装备科技有限公司 | Frequency conversion air compressor pressure sensor disconnection fault processing system and method |
| CN109469602A (en) * | 2017-09-07 | 2019-03-15 | 阿耐思特岩田株式会社 | The control method of compressed gas feedway and compressed gas feedway |
| CN109469602B (en) * | 2017-09-07 | 2021-07-02 | 阿耐思特岩田株式会社 | Compressed gas supply device and control method for compressed gas supply device |
| CN109958609A (en) * | 2019-05-06 | 2019-07-02 | 重庆建工市政交通工程有限责任公司 | Tunnel frequency conversion air compressor group intelligent power air feed system and construction method |
| CN109958609B (en) * | 2019-05-06 | 2024-02-20 | 重庆建工市政交通工程有限责任公司 | Construction method of intelligent power air supply system of tunnel variable frequency air compressor unit |
| CN113791606A (en) * | 2021-09-17 | 2021-12-14 | 上海斯可络压缩机有限公司 | Self-diagnosis system for screw compressor controller |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 Termination date: 20150930 |
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| EXPY | Termination of patent right or utility model |