CN208384407U - The frequency-converting control device of generating set cooling system - Google Patents
The frequency-converting control device of generating set cooling system Download PDFInfo
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- CN208384407U CN208384407U CN201820879539.2U CN201820879539U CN208384407U CN 208384407 U CN208384407 U CN 208384407U CN 201820879539 U CN201820879539 U CN 201820879539U CN 208384407 U CN208384407 U CN 208384407U
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- generating set
- amplifier
- resistance
- frequency
- capacitor
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Abstract
The utility model discloses the frequency-converting control devices of generating set cooling system, including generating set, control system, temperature measurement system, frequency converter and cooling blower, the control system is electrically connected by frequency converter with cooling blower, temperature measurement system is electrically connected with control system and frequency converter respectively, generating set is electrically connected to the control system, controller, the first relay, the second relay and contactor are equipped in the control system, controller passes through the external -24V DC voltage power supply of coil of the coil and the second relay of the first relay respectively；Loudspeaker is equipped in the control system, loudspeaker is electrically connected with voice module, and voice module includes in the frequency-converting control device of the sound circuit generating set cooling system, energy-saving；Reduce noise；Increase the service life of cooling blower；By sound circuit, the reliable output of voice signal can be realized, improve the reliability of device, the utility model is designed reasonably is suitble to promote the use of.
Description
Technical field
The utility model relates to generating set field of cooling, and in particular to a kind of frequency conversion of generating set cooling system
Control device.
Background technique
The control mode of traditional generating set cooling system is that constant speed exchanges the blower directly controlled in cooling system, wind
Machine is fixed on single-frequency and works, no matter cooling system temperature and load variation all in high energy consumption in the case where work
Make.Energy consumption is high for the working method, noise is big；Energy-saving, traditional generating set cooling system air-blower control is advocated now
It cannot be suitble to requirement of the modern society to product；Moreover, general control system can all be equipped with phonetic function, to provide
The staff of field is monitored system, but since in existing sound circuit, there is voice signal distortions, and work
The small problem of voltage range results in when installation's power source voltage fluctuates, voice output distortion occurs, result in work
It cannot be correctly received instruction as personnel, to reduce the reliability of control device.
Utility model content
The utility model is above-mentioned in order to overcome the shortcomings of, provides energy-saving one kind, reduction noise and increases cooling blower
The frequency-converting control device of the generating set cooling system of service life.
The utility model achieves the above object through the following technical schemes:
The frequency-converting control device of generating set cooling system, including generating set, control system, temperature measurement system, change
Frequency device and cooling blower, the control system are electrically connected by frequency converter with cooling blower, temperature measurement system respectively with control
System and frequency converter electrical connection, generating set are electrically connected to the control system；
Controller, the first relay, the second relay and contactor, controller is equipped in the control system to pass through respectively
External -24V the DC voltage power supply of the coil of the coil of first relay and the second relay, the switch of the second relay and contact
External+24V the DC voltage power supply in series circuit one end of the composition of the coil of device, the external -24V DC voltage power supply of the other end,
The switch of contactor is connected with frequency converter, and the switch of the first relay is connected with generating set；
Thermistor is equipped in temperature measurement system, controller is grounded by thermistor, and thermistor setting is generating electricity
In unit；
The working principle of the control device is that thermistor monitors generating set temperature in real time, then control system
System controls generating set and frequency converter according to temperature, while frequency converter is become according to the temperature that thermistor detects
Frequency modulation section, to control the work of cooling blower；
Wherein, by converter technique means, to change the frequency of supply of electrical equipment, and then reach control equipment output work
The purpose of rate；
Application of the converter technique in generating set cooling system significantly reduces the energy consumption of system, system according to
Temperature feedback in cooling system realizes frequency control, and temperature feedback automatically controls frequency converter output frequency, to realize hair
Cooling blower frequency control in electric unit cooling system；Frequency control changes cooling system blower according to the variation of payload size
Frequency significantly reduce system work when noise.
Loudspeaker is equipped in the control system, loudspeaker is electrically connected with voice module, and voice module includes sound circuit.
Preferably, the sound circuit includes amplifier, first capacitor, the second capacitor, third capacitor, the 4th capacitor, the 5th
Capacitor, the 6th capacitor, first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, adjustable resistance
And inductance, the 7th end of the model LM3875 of amplifier, amplifier are connected by the adjustable end of first resistor and adjustable resistance, adjustable
One end of resistance is grounded, and the 7th end of amplifier is connected by the 8th end of first capacitor and amplifier, and the 8th end of amplifier passes through the
The series circuit ground connection of two resistance and the second capacitor composition, and connected by the third end of 3rd resistor and amplifier, the 5th capacitor
, the fourth end external -20V DC voltage power supply of amplifier in parallel with 3rd resistor with the series circuit of the 4th resistance composition, and it is logical
The 4th capacity earth, the external+20V DC voltage power supply of the first end of amplifier are crossed, and passes through third capacity earth, the third of amplifier
The series circuit ground connection that end is made up of the 5th resistance and the 6th capacitor, and the parallel circuit formed with inductance and the 6th resistance connects
It connects.
In sound circuit, the 7th end input audio signal of amplifier, while audio signal is limited by adjustable resistance
Pressure processing, after then passing through amplifier power amplification, from the three-polar output of amplifier, the LC formed by inductance and the 6th resistance
Filter circuit is filtered interference signal, is then output on loudspeaker, carries out voice prompting；Wherein, the model of amplifier
LM3875, can be in the frequency range of 20Hz-20kHz, and being distorted is only 0.05%, substantially increases the reliable of voice output
Property, moreover, its working range is longer, in ± 35V or so, the working range of amplifier is substantially increased, improves voice output
Reliability improves the reliability of device.
Preferably, scram button is additionally provided in the control system, the controller is straight by the external+24V of scram button
Galvanic electricity voltage source, scram button is in parallel with generating set, when generating set temperature is excessively high, in order to avoid accident occurs,
It can be played a protective role by scram button.
Preferably, it is additionally provided with first switch and the second switch in the control system, controller passes through first switch respectively
With the external -24V DC voltage power supply of second switch, first switch and the second switch can be used as spare control and use, to improve
The practicability of device.
Preferably, the controller is PLC.
Preferably, in order to realize the remote control to device, communication module, communication module are additionally provided in the control system
It is electrically connected with the controller.
The beneficial effects of the utility model are: compared with the existing technology, the utility model has the advantage that
1, energy-saving: application of the converter technique in generating set cooling system effectively reduces the energy of system
Consumption, the control advantage than traditional generating set cooling system are bigger；
2, it reduces noise: changing the frequency of system in real time, reduce the revolving speed of blower, reduce system noise to environment
Influence；
3, increase the service life of cooling system blower: using the Alternating Current Governor System of frequency converter, can to frequency converter into
The setting of row add-subtract time generates heat to the impact of power grid and frequent starting to solve the problems, such as that motor starting current is larger,
It is effectively increased the service life of blower；
4, by sound circuit, it can be realized the reliable output of voice signal, improve the reliability of device.
Detailed description of the invention
The utility model will illustrate by example and with reference to the appended drawing, in which:
Fig. 1 is the principles of the present invention figure；
Fig. 2 is the electrical schematic diagram of the control system of the utility model；
Fig. 3 is the circuit diagram of the sound circuit of the utility model.
In figure: 1. generating sets, 2. control systems, 3. temperature measurement systems, 4. frequency converters, 5. cooling blowers, U1. control
Device, SET1. scram button, the coil of the first relay of KA1-1., the coil of the second relay of KA2-1., the second relay of KA2-2.
The switch of device, S1. first switch, S2. second switch, RT1. thermistor, the coil of KM1-1. contactor, U2. amplifier, C1.
First capacitor, the second capacitor of C2., C3. third capacitor, the 4th capacitor of C4., the 5th capacitor of C5., the 6th capacitor of C6., R1. first
Resistance, R2. second resistance, R3. 3rd resistor, the 4th resistance of R4., the 5th resistance of R5., the 6th resistance of R6., RP1. adjustable electric
Resistance, L1. inductance.
Specific embodiment
The utility model is described in further detail presently in connection with attached drawing.These attached drawings are simplified schematic diagram,
Only illustrate the basic structure of the utility model in a schematic way, therefore it only shows composition related with the utility model.
As shown in Figure 1-Figure 3, the frequency-converting control device of generating set cooling system, including generating set 1, control system 2,
Temperature measurement system 3, frequency converter 4 and cooling blower 5, the control system 2 are electrically connected by frequency converter 4 with cooling blower 5, temperature
Degree measuring system 3 is electrically connected with control system 2 and frequency converter 4 respectively, and generating set 1 is electrically connected with control system 2；The control
Controller U1, the first relay, the second relay and contactor are equipped in system 2, controller U1 passes through the first relay respectively
Coil KA1-1 and the second relay the external -24V DC voltage power supply of coil KA2-1, the switch KA2-2 of the second relay
With the external+24V DC voltage power supply in series circuit one end of the composition of the coil KM1-1 of contactor, the external -24V of the other end is straight
The switch of galvanic electricity voltage source, contactor is connected with frequency converter 4, and the switch of the first relay is connected with generating set 1；Temperature measurement
Thermistor RT1 is equipped in system 3, controller U1 is grounded by thermistor RT1, and thermistor RT1 is arranged in generating set 1
In；Loudspeaker is equipped in the control system 2, loudspeaker is electrically connected with voice module, and voice module includes sound circuit；It is described
Sound circuit includes amplifier U2, first capacitor C1, the second capacitor C2, third capacitor C3, the 4th capacitor C4, the 5th capacitor C5,
Six capacitor C6, first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, can
Resistance RP1 and inductance L1 is adjusted, the 7th end of the model LM3875 of amplifier U2, amplifier U2 pass through first resistor R1 and adjustable resistance
The adjustable end of RP1 connects, and one end ground connection of adjustable resistance RP1, the 7th end of amplifier U2 passes through first capacitor C1's and amplifier U2
The connection of 8th end, the series circuit ground connection that the 8th end of amplifier U2 is made up of second resistance R2 and the second capacitor C2, and pass through
3rd resistor R3 is connect with the third end of amplifier U2, the series circuit and 3rd resistor of the 5th capacitor C5 and the 4th resistance R4 composition
R3 is in parallel, the external -20V DC voltage power supply in the 4th end of amplifier U2, and is grounded by the 4th capacitor C4, the first end of amplifier U2
External+20V DC voltage power supply, and be grounded by third capacitor C3, the third end of amplifier U2 passes through the 5th resistance R5 and the 6th
The series circuit ground connection of capacitor C6 composition, and connect with inductance L1 and the 6th resistance R6 parallel circuit formed；The control system
Scram button SET1 is additionally provided in system 2, the controller U1 passes through the external+24V DC voltage power supply of scram button SET1, emergency stop
Button SET1 is in parallel with generating set 1；First switch S1 and second switch S2, controller U1 are additionally provided in the control system 2
Pass through the external -24V DC voltage power supply of first switch S1 and second switch S2 respectively；The controller U1 is PLC；The control
Communication module is additionally provided in system 2, communication module is electrically connected with controller U1.
Above-mentioned foundation the utility model is enlightenment, and through the above description, relevant staff completely can be not
In the range of deviateing this item utility model technical idea, various changes and amendments are carried out.This item utility model it is technical
Range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (6)
1. a kind of frequency-converting control device of generating set cooling system, it is characterised in that: including generating set, control system, temperature
Measuring system, frequency converter and cooling blower are spent, the control system is electrically connected by frequency converter with cooling blower, temperature measurement system
System is electrically connected with control system and frequency converter respectively, and generating set is electrically connected to the control system；
It is equipped with controller, the first relay, the second relay and contactor, controller in the control system and passes through first respectively
External -24V the DC voltage power supply of the coil of the coil of relay and the second relay, the switch of the second relay and contactor
External+24V the DC voltage power supply in series circuit one end of the composition of coil, the external -24V DC voltage power supply of the other end, contact
The switch of device is connected with frequency converter, and the switch of the first relay is connected with generating set；
Thermistor is equipped in temperature measurement system, controller is grounded by thermistor, and thermistor is arranged in generating set
In；
Loudspeaker is equipped in the control system, loudspeaker is electrically connected with voice module, and voice module includes sound circuit.
2. the frequency-converting control device of generating set cooling system according to claim 1, it is characterised in that: the voice electricity
Road includes amplifier, first capacitor, the second capacitor, third capacitor, the 4th capacitor, the 5th capacitor, the 6th capacitor, first resistor,
Two resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, adjustable resistance and inductance, the model LM3875 of amplifier,
7th end of amplifier is connected by the adjustable end of first resistor and adjustable resistance, one end ground connection of adjustable resistance, and the 7th of amplifier the
End is connected by the 8th end of first capacitor and amplifier, the series connection that the 8th end of amplifier is made up of second resistance and the second capacitor
Circuit ground, and being connected by the third end of 3rd resistor and amplifier, the series circuit of the 5th capacitor and the 4th resistance composition with
3rd resistor is in parallel, the external -20V DC voltage power supply in the 4th end of amplifier, and passes through the 4th capacity earth, the first end of amplifier
External+20V DC voltage power supply, and by third capacity earth, the third end of amplifier passes through the 5th resistance and the 6th capacitance group
At series circuit ground connection, and the parallel circuit formed with inductance and the 6th resistance is connect.
3. the frequency-converting control device of generating set cooling system according to claim 1, it is characterised in that: the control system
Scram button is additionally provided in system, the controller passes through the external+24V DC voltage power supply of scram button, scram button and power generation
Unit is in parallel.
4. the frequency-converting control device of generating set cooling system according to claim 1, it is characterised in that: the control system
First switch and the second switch is additionally provided in system, controller passes through the external -24V DC voltage of first switch and the second switch respectively
Power supply.
5. the frequency-converting control device of generating set cooling system according to claim 1, it is characterised in that: the controller
For PLC.
6. the frequency-converting control device of generating set cooling system according to claim 1, it is characterised in that: the control system
Communication module is additionally provided in system, communication module is electrically connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820879539.2U CN208384407U (en) | 2018-06-07 | 2018-06-07 | The frequency-converting control device of generating set cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820879539.2U CN208384407U (en) | 2018-06-07 | 2018-06-07 | The frequency-converting control device of generating set cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208384407U true CN208384407U (en) | 2019-01-15 |
Family
ID=64970082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820879539.2U Expired - Fee Related CN208384407U (en) | 2018-06-07 | 2018-06-07 | The frequency-converting control device of generating set cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208384407U (en) |
-
2018
- 2018-06-07 CN CN201820879539.2U patent/CN208384407U/en not_active Expired - Fee Related
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190115 Termination date: 20210607 |
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| CF01 | Termination of patent right due to non-payment of annual fee |