CN212717326U - Intelligent control device for fan - Google Patents
Intelligent control device for fan Download PDFInfo
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- CN212717326U CN212717326U CN202022233017.5U CN202022233017U CN212717326U CN 212717326 U CN212717326 U CN 212717326U CN 202022233017 U CN202022233017 U CN 202022233017U CN 212717326 U CN212717326 U CN 212717326U
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Abstract
The utility model discloses an intelligent control device of a fan, which comprises an upper box body and a lower box body; an IGBT heating module, a rectification module, a PID controller and a frequency converter driver of the frequency converter are arranged in the lower box body; the IGBT heating module is arranged on the red copper plate on the rear plate surface in the lower box body in a threaded connection manner; the rectification module, the PID controller and the frequency converter driver are integrally fixed on the integrated plate and fixed on the fixing block through screws; a plurality of radiating fins are arranged on the rear plate of the lower box body, the radiating fins are connected with the rear plate of the explosion-proof box body through threads, and heat-conducting paste is smeared between the rear plate of the explosion-proof box body and the radiating fins; the utility model discloses reduce the device temperature that generates heat of converter, simplify the cooling system of converter, the maximize integrated frequency conversion and PID control, reduce the volume of converter, improve colliery safety in production degree, reduce colliery accident rate in the pit.
Description
Technical Field
The utility model belongs to the technical field of intelligent control ware, concretely relates to fan intelligent control device.
Background
The coal mine ventilator is one of main devices of a coal mine, intelligent control is achieved, the energy-saving effect of the frequency converter driven ventilator is obvious, safety management is greatly improved, and the coal mine ventilator is increasingly popularized and used. The frequency converter is a typical heating source, so the heat dissipation problem of the existing coal mine down converter is very outstanding, and the structural system of the frequency converter is also complex. Besides, the existing coal mine frequency converter is large in size, excessively occupies the space of a roadway, is relatively heavy and is very difficult to carry.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to the aforesaid among the prior art is not enough, provides a fan intelligent control device to solve or improve foretell problem.
In order to achieve the purpose, the utility model adopts the technical proposal that:
an intelligent fan control device comprises an explosion-proof box body, wherein the explosion-proof box body is divided into an upper box body and a lower box body at intervals through a steel plate; the lower box body is fixed on the air duct through an explosion-proof box body bracket; an IGBT heating module, a rectification module, a PID controller and a frequency converter driver of the frequency converter are arranged in the lower box body; the IGBT heating module is arranged on the red copper plate on the rear plate surface in the lower box body in a threaded connection manner; the rectification module, the PID controller and the frequency converter driver are integrally fixed on the integrated plate and fixed on the fixing block through screws; a plurality of radiating fins are arranged on the rear plate of the lower box body, the radiating fins are in threaded connection with the rear plate of the explosion-proof box body, and heat-conducting paste is smeared between the rear plate of the explosion-proof box body and the radiating fins;
the upper box body is provided with a variable frequency control signal output port, a fan wind power and gas power output port, a fan motor power supply outlet, a gas sensor inlet, a dust carbon monoxide sensor signal inlet, a temperature and humidity sensor signal inlet and a power supply inlet.
Preferably, a whole red copper plate is welded with the rear plate surface in the lower box body by explosion welding.
Preferably, a heat-conducting paste is smeared between the red copper plate and the rear plate in the explosion-proof box body.
Preferably, the bracket of the explosion-proof box body is welded on the air duct.
Preferably, the plurality of radiating fins are fixed on the rear plate of the lower box body through the radiator bottom plate; and the radiator bottom plate is provided with a plurality of embedded grooves for reinforcing the radiating fins.
Preferably, the upper box body is further provided with a fan output binding post, a wiring cavity grounding post, an upper box body flange, a control wiring porcelain post, a power supply inlet binding post and a fan motor binding post.
Preferably, an upper case cover is mounted on the upper case.
Preferably, the lower box body is provided with a frequency conversion parameter display window and a PID control parameter display screen.
Preferably, the lower box body is also provided with a manual-automatic change-over switch and an external given stepless speed regulating switch.
The utility model provides a fan intelligent control device has following beneficial effect:
the utility model discloses in the wind channel with explosion-proof box internal IGBT heating power device part embedding colliery ventilation blower under the box, the temperature that utilizes colliery ventilation blower's wind current to reach the heating power device of converter is gone up on the fin and is carried out forced cooling, reduces the device temperature that generates heat of converter, simplifies the cooling system of converter, and the maximize has integrateed frequency conversion and PID control, reduces the volume of converter, improves colliery safety in production degree, reduces colliery accident rate in the pit.
Drawings
Fig. 1 is a controller profile.
Fig. 2 is a diagram of the internal control profile of the controller.
FIG. 3 is a diagram of a fan controller position.
FIG. 4 is a top view of a fan controller.
FIG. 5 is a flow chart of the fan controller operation.
FIG. 6 is a fan controller heat patch process diagram.
Fig. 7 is a diagram of an upper case terminal arrangement.
Wherein, 1, an upper box cover; 2. a variable frequency parameter display window; 3. a PID control parameter display screen; 4. a manual-automatic transfer switch; 5. a stepless speed regulating switch is given from the outside; 6. a fan junction box; 7. a fan junction box; 8. An air duct; 9. a fan base; 10. a heat sink; 11. a red copper plate; 12. the box body is protected and grounded; 13. a door shaft; 14. an explosion vent; 15. an explosion-proof box support; 16. a screw; 17. an IGBT heating module; 18. a fixed block; 19. a capacitor bank; 20. a rectification module; 21. a PID controller; 22. a frequency converter driver; 23. a variable frequency control signal output port; 24. a fan wind power gas power output port; 25. a fan motor power supply outlet; 26. a gas sensor inlet; 27. a signal inlet of a dust carbon monoxide sensor; 28. a temperature and humidity sensor signal inlet; 29. a power supply wire inlet; 30. a groove is embedded; 31. a heat sink base plate; 32. a power supply rectification module; 33. a fan output binding post; 34. a wiring cavity grounding post; 35. an upper case flange; 36. controlling a wiring knob insulator; 37. a power supply inlet wire binding post; 38. fan motor terminal.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and various changes may be made apparent to those skilled in the art within the spirit and scope of the present invention as defined and defined by the appended claims.
According to an embodiment of the present application, referring to fig. 1 to 7, the intelligent control device for a fan in the present solution is mainly an intelligent controller for controlling a counter-rotating axial flow fan, and specifically includes:
the explosion-proof box body is divided into an upper box body and a lower box body at intervals through steel plates.
The lower box body is fixed on the air duct 8 through an explosion-proof box body support 15, and the explosion-proof box body support 15 is welded on the air duct 8.
And an IGBT heating module 17, a rectification module 20, a PID controller 21 and a frequency converter driver 22 of the frequency converter are arranged in the lower box body.
The lower box body mainly comprises a frequency converter, a PID controller 21, a display screen and a switch, the frequency converter IGBT heating module 17 is connected to the red copper plate 11 on the back plate surface in the box body through threads, and the heat absorption efficiency of the red copper plate 11 is high.
The whole red copper plate 11 is tightly fused with the rear plate surface in the lower box body by adopting the explosive welding, and the red copper plates 11 can be tightly combined together by adopting the explosive welding process to ensure the heat dissipation.
Heat-conducting paste is smeared between the red copper plate 11 and the inner back plate of the explosion-proof box, and the IGBT heating module 17 can be taken out only by detaching the screw 16 during detachment.
The capacitor bank 19 and the power supply rectifying module 20 are integrally fixed on the plate to form an integral module, and the capacitor bank 19 and the power supply rectifying module 20 can be integrally taken out only by disassembling the screw 16 fixed on the fixing block 18 during disassembly.
The explosion-proof controller is provided with an explosion-proof door 14, two visual windows are arranged on the door, one is a variable-frequency parameter display window 2, and the PID control parameter display screen 3 can display the running parameters of the fan in real time.
The box body outer rear plate is provided with a plurality of radiating fins 10, the radiating fins 10 are in threaded connection with the steel plate, heat conducting paste is smeared between the explosion-proof box rear plate and the radiating fins 10, and the radiating fins 10 are arranged on the inner side of the air duct.
The plurality of radiating fins 10 are fixed on the rear plate of the lower box body through a radiator bottom plate 31, and a plurality of embedded grooves 30 for installing the radiating fins 10 are formed in the radiator bottom plate 31.
When the fan is started to operate, the heat emitted by the IGBT heating module 17 is rapidly absorbed by the red copper plate 11 in the explosion-proof box body, and is transferred to the radiating fins 10 on the outer bottom plate of the box body through the red copper plate 11 to be absorbed, and the temperature on the radiating fins 10 is blown away by the wind flow generated by the operation of the fan at the moment, so that the operation of the frequency converter at normal temperature is ensured.
The lower box body is also provided with a manual-automatic change-over switch 4 and an external given stepless speed regulating switch 5.
An upper box cover 1 is arranged on the upper box body, and a variable frequency control signal output port 23, a fan wind power and gas power output port 24, a fan motor power supply outlet 25, a gas sensor inlet 26, a dust carbon monoxide sensor signal inlet 27, a temperature and humidity sensor signal inlet 28 and a power supply inlet 29 are arranged in the upper box body.
The upper box body is also provided with a fan output binding post 33, a wiring cavity grounding post 34, an upper box body flange 35, a control wiring porcelain post 36, a power supply inlet binding post 37 and a fan motor binding post 38.
The utility model is that the explosion-proof intelligent controller is arranged on the wall of the wind tube 8, the wind tube 8 is arranged on the fan, the side wall of the wind tube 8 is provided with a hole opening with the size equal to the size of the rear plate of the controller, the wall of the wind tube 8 is welded with the explosion-proof box body bracket 15, when the controller is arranged, the air deflector is firstly detached, the wind tube 8 is arranged on the fan, then the air deflector is arranged, the power is switched on, at the moment, the frequency converter and the PID control plate are simultaneously electrified,
and (4) operating the main fan and operating an interlocking experiment.
The ventilator for the coal mine heading face comprises two contra-rotating ventilators, wherein one ventilator supplies air to the face during normal work, the other ventilator starts air supply when the main fan fails, namely a standby fan, the first frequency converter controls the main fan, and the second frequency converter controls the standby fan.
The first frequency converter main fan is provided with a display control data frequency converter, and the second frequency converter is a frequency converter without a touch screen and a control panel. When the first frequency converter is in a manual state, the first frequency converter directly operates, the rotating speed is manually adjusted through the potentiometer, and the second frequency converter cannot operate at the moment. Similarly, when the second frequency converter is in a manual state, the rotating speed is manually adjusted through the potentiometer, and the first frequency converter cannot run at the moment. When the two frequency converters are in an automatic state, the starting, stopping and speed of the frequency converters are controlled by control panel signals.
Frequency converter no-load and load test
In the no-load experiment, the frequency converter operates in a manual gear and manually adjusts the speed regulation knob, and the speed gradually reaches the required wind speed.
The no-load test is mainly after the fan starts, and the initial frequency that the frequency conversion started is at 25-30HZ operation, and at this moment, the regulation potentiometre switch can change the rotational speed of fan, reaches the effect of control amount of wind and guarantees the required amount of wind of tunnelling working face, and the control of fan wind speed is fed back to PID controller 21 signal by the air velocity transducer of working face and is adjusted the wind speed, the utility model discloses the wind speed of setting for is 2.5 meters/second, and with wind speed ground to 2.5 meters/second when the wind speed is higher than 2.5 meters/second, otherwise, increases the wind speed to 2.5 meters/second.
And (4) a loading experiment, namely building a loading test bed, which comprises a dragging motor, a loading motor, a braking device and a braking resistor, wherein the explosion-proof frequency converter operates the dragging motor to a certain rotating speed, and increases the load to the full load state of the output current of the explosion-proof frequency converter.
The experiment mainly ensures that the fan can be operated in full load when an accident or disaster hidden danger occurs on a working face, and the main accident hidden danger form has the following points:
1. when gas on a working face gushes out, the concentration of a gas sensor T1 exceeds 1% and is used for sensor alarm, and meanwhile, the wind speed of a main fan reaches the maximum value of 50HZ, namely, the main fan runs in full load, the gas concentration of the working face is diluted and reduced to a safe range value, if T1 breaks down, T2 replaces T1, and when the gas reaches 1% after being received by a gas sensor T3 dug into a roadway, the wind speed can be rapidly reduced to about 30HZ, so that the gas is prevented from blowing into the main roadway.
2. When the dust concentration is out of limit, the dust concentration sensor gives an alarm, simultaneously feeds back a signal, adjusts the wind speed to the maximum, simultaneously starts the spraying dust-settling equipment, rapidly reduces the dust to a safe value, and similarly, the temperature, the carbon monoxide, the hydrogen sulfide and other flammable and explosive gases are always monitored by the sensor, the safety production of the working face is ensured by changing the wind speed, and the loading test is the reliability of the operation of the inspection equipment.
Logic experiment
Test of fan control function
The gas sensor measures the placement point: t1 is a heading gas concentration value of a heading face, T2 is a heading tunnel return air flow gas concentration value, T3 is a return air tunnel mixed gas concentration value, and T4 is a fan inlet gas concentration value.
Hand-operated air discharge test
When the manual operation is performed, the set frequency of the speed regulator is consistent with the output frequency.
Wind power lock
After the speed regulator is started and the set time is reached, the output contact is closed, and after the speed regulator is stopped, the output node is immediately disconnected.
Automatic gas discharge state test
(1) The input gas concentration (T1 ═ 1.5%), (T3 ═ 0%), and the output frequency was 50+0.5 Hz.
(2) The gas concentration (T1 ═ 1.5%) and (T3 ═ 1%) were input, and the output frequency was 30+0.5 Hz.
(3) The gas concentration (T1-1.5%) and (T3-1%) are input, and the output frequency is reduced from 50Hz to 30 Hz.
(4) The gas concentration (T1 is less than 1.5 percent) and (T3 is less than 1 percent) are input, the output frequency is 30-50 Hz, when the T1 is increased, the output frequency is increased, and when the T1 is reduced, the output frequency is reduced.
Automatic ventilation status test
(1) The input gas concentration (T3 < 1.0%), (T1 ═ 0%), and the output frequency was 30+0.5 Hz.
(2) The input gas concentration (T3 < 1.0%), (T1 ═ 1.5%), and the output frequency was 50+0.5 Hz.
(3) Inputting gas concentration (T3 is less than 1.0%), (T1 is 0-1.5%), and increasing output frequency from 30Hz to 50 Hz.
(4) The gas concentration (T3 is more than 1.0 percent) and (T1 is more than 1.5 percent) are input, the output frequency is 30-50 Hz, when the T3 is increased, the output frequency is reduced, and when the T1 is reduced, the output frequency is increased.
Gas electric lock
When the speed regulator is in the running state, the input gas concentration (T1 is more than or equal to 1.5 percent) or (T3 is more than or equal to 1.0 percent) is disconnected.
Fault determination
(1) And when the T1 fails, a T2 value is selected, and the function of T1 is realized.
(2) T3 fault, protection, output frequency 30+0.5 Hz.
(3) When the T4 value is more than or equal to 0.5, the speed regulator stops working.
Main and standby frequency conversion switching function test
(1) When the dual power supplies power, the main speed regulator is started, and the standby speed regulator cannot be started.
(2) Stopping the running main speed regulator, and automatically starting the standby speed regulator; the standby speed regulator is stopped, and the main speed regulator cannot be automatically started.
(3) When the standby speed regulator runs, the main speed regulator is manually started, and when the main speed regulator runs, the standby speed regulator stops running.
The heat dissipation mode of traditional converter relatively, the utility model discloses following beneficial effect has:
the utility model provides the high fan intelligent operating efficiency need not the special messenger and manages, can make the working face reach the best air volume value all the time.
The utility model discloses changed the heat dissipation mode of traditional converter, the volume and the weight of the controller that have significantly reduced, the volume is current frequency conversion 1/5, and the current frequency conversion 1/6 of weight, the cost of practicing thrift the rate.
The communication function of the controller is organically combined with the six systems of the existing coal mine enterprises, so that unified management is facilitated, and a foundation is laid for realizing intelligent mines.
The utility model discloses energy-conserving effect is outstanding, adjusts through the actual required weight of tunnelling worker face, reduction energy consumption that can be by a wide margin.
The utility model discloses can combine with harmful prevention and cure systems organic such as gas, carbon monoxide, carbon dioxide, dust, hydrogen sulfide, temperature, humidity, ensure the safe operation of working face.
To sum up, the utility model discloses during the air duct that the IGBT heating power device part in the box under the explosion-proof box was embedded into the colliery ventilation machine, the temperature that utilizes the wind current of colliery ventilation machine to reach the heating power device of converter was carried out forced cooling on the fin, reduced the heating device temperature of converter, simplified the cooling system of converter, the maximize integrated frequency conversion and PID control, reduced the volume of converter, improve colliery safety in production degree, reduce colliery accident rate in the pit.
While the present invention has been described in detail with reference to the embodiments, the scope of the present invention should not be limited to the embodiments. Various modifications and changes may be made by those skilled in the art without inventive step within the scope of the appended claims.
Claims (9)
1. The utility model provides a fan intelligent control device which characterized in that: the anti-explosion box body is divided into an upper box body and a lower box body at intervals through steel plates; the lower box body is fixed on the air duct through an explosion-proof box body bracket; an IGBT heating module, a rectification module, a PID controller and a frequency converter driver of the frequency converter are arranged in the lower box body; the IGBT heating module is arranged on the red copper plate on the rear plate surface in the lower box body in a threaded connection manner; the rectification module, the PID controller and the frequency converter driver are integrally fixed on the integrated plate and fixed on the fixing block through screws; a plurality of radiating fins are arranged on the rear plate of the lower box body, the radiating fins are in threaded connection with the rear plate of the explosion-proof box body, and heat-conducting paste is smeared between the rear plate of the explosion-proof box body and the radiating fins;
the upper box body is provided with a variable frequency control signal output port, a fan wind power and gas power output port, a fan motor power supply outlet, a gas sensor inlet, a dust carbon monoxide sensor signal inlet, a temperature and humidity sensor signal inlet and a power supply inlet.
2. The intelligent fan control device of claim 1, wherein: and a whole red copper plate is tightly fused with the rear plate surface in the lower box body by adopting explosive welding.
3. The intelligent fan control device of claim 1, wherein: and a heat-conducting paste is smeared between the red copper plate and the rear plate in the explosion-proof box body.
4. The intelligent fan control device of claim 1, wherein: the explosion-proof box body support is welded on the air duct.
5. The intelligent fan control device of claim 1, wherein: the plurality of radiating fins are fixed on the rear plate of the lower box body through the radiator bottom plate; and the radiator bottom plate is provided with a plurality of embedded grooves for reinforcing the radiating fins.
6. The intelligent fan control device of claim 1, wherein: the upper box body is also provided with a fan output binding post, a wiring cavity grounding post, an upper box body flange, a control wiring porcelain post, a power supply inlet wire binding post and a fan motor binding post.
7. The intelligent fan control device of claim 1, wherein: an upper box cover is installed on the upper box body.
8. The intelligent fan control device of claim 1, wherein: and the lower box body is provided with a frequency conversion parameter display window and a PID control parameter display screen.
9. The intelligent fan control device of claim 1, wherein: and the lower box body is also provided with a manual-automatic change-over switch and an external given stepless speed regulating switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022233017.5U CN212717326U (en) | 2020-10-09 | 2020-10-09 | Intelligent control device for fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022233017.5U CN212717326U (en) | 2020-10-09 | 2020-10-09 | Intelligent control device for fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212717326U true CN212717326U (en) | 2021-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022233017.5U Active CN212717326U (en) | 2020-10-09 | 2020-10-09 | Intelligent control device for fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212717326U (en) |
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2020
- 2020-10-09 CN CN202022233017.5U patent/CN212717326U/en active Active
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