CN204794796U - Thermal power unit air cooling island cooling unit's controlling means - Google Patents
Thermal power unit air cooling island cooling unit's controlling means Download PDFInfo
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- CN204794796U CN204794796U CN201520373727.4U CN201520373727U CN204794796U CN 204794796 U CN204794796 U CN 204794796U CN 201520373727 U CN201520373727 U CN 201520373727U CN 204794796 U CN204794796 U CN 204794796U
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Abstract
The utility model discloses a thermal power unit air cooling island cooling unit's controlling means, including variable frequency speed governing(VFSG) unit, synchronous machine and transmission shaft, the variable frequency speed governing(VFSG) unit is connected with synchronous machine, and synchronous machine passes through the transmission shaft and is connected with the load fan. The utility model discloses a synchronous machine direct drive cooling blower can realize the slow -speed of revolution of motor, big torque, high -efficient operation, ensures that transshipping can not appear in the motor, abnormal phenomena such as overheated, through variable frequency speed governing(VFSG) unit regulation synchronous machine and cooling blower's rotational speed, realize stepless level and smooth regulation of cooling blower, ensure the big torque under the slow -speed of revolution, in addition, synchronous machine's control of permanent VF or vector control can be realized to the variable frequency speed governing(VFSG) unit.
Description
Technical field
The utility model relates to thermal power generation unit control field, particularly relates to the control device of thermal power generation unit Air-Cooling Island cooling unit.
Background technology
At present, the control device of thermal power generation unit Air-Cooling Island cooling unit, generally by common transducer drive asynchronous machine, drives fan operation after reduction box slows down, there is complex structure, failure rate is high, safeguards inconvenient, the shortcomings such as maintenance cost is high, and maintenance cycle is long.
The control device of the common frequency converter of existing this main employing, asynchronous machine and reduction box composition, its operational reliability has much room for improvement.
Summary of the invention
The utility model is in order to solve the technical problem existing for existing control device, a kind of control device of thermal power generation unit Air-Cooling Island cooling unit is provided, simplify Air-Cooling Island cooling unit system configuration, achieve the high efficient and reliable stable operation of Air-Cooling Island cooling unit, and there is certain energy-saving effect.
The utility model adopts following technical scheme to realize: the control device of thermal power generation unit Air-Cooling Island cooling unit, comprise frequency control unit, synchronous machine and power transmission shaft, frequency control unit is connected with synchronous machine, and synchronous machine is connected with load blower fan by power transmission shaft.
The control device of described thermal power generation unit Air-Cooling Island cooling unit also comprises cable, and described frequency control unit is connected with described synchronous machine by described cable.
Described synchronous machine is provided with radiator fan.
Described synchronous machine is permagnetic synchronous motor.
The magnetic pole of described synchronous machine adopts many pole design.
Described frequency control unit carries out constant voltage constant frequency control or vector control to synchronous machine.
Compared with prior art, the utility model tool has the following advantages and beneficial effect:
1, adopt permagnetic synchronous motor Direct driver cooling blower, the slow-speed of revolution of motor, large torque, Effec-tive Function can be realized, guarantee that motor there will not be overload, the anomaly such as overheated, achieve the efficiency utilization of permagnetic synchronous motor at Air-Cooling Island cooling unit.
2, regulated the rotating speed of synchronous machine and cooling blower by frequency control unit, realize cooling blower stepless control, guarantee the large torque under the slow-speed of revolution; In addition, frequency control unit can realize permanent V/F control or the vector control of synchronous machine.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below by Figure of description and embodiment, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
Embodiment
The utility model is applicable to the cooling blower controlling thermal power generation unit Air-Cooling Island cooling unit.As shown in Figure 1, the control device of the utility model thermal power generation unit Air-Cooling Island cooling unit, comprises frequency control unit 1, cable 2, radiator fan 3, permagnetic synchronous motor 4 and power transmission shaft 5, and frequency control unit 1 is for driving permagnetic synchronous motor 4; Radiator fan 3 is arranged on permagnetic synchronous motor, is the fan that permagnetic synchronous motor carries; Frequency control unit 1 is connected with permagnetic synchronous motor 4 by cable 2, and permagnetic synchronous motor is connected with load blower fan 6 by power transmission shaft 5.
Frequency control unit 1 calculates synchronous machine rotating speed by detection synchronous motor stator winding voltage and frequency, thus drived control is carried out to the rotating speed of synchronous machine, permanent V/F (constant voltage and frequency ratio) can be carried out to synchronous machine to control or vector control, Direct driver permagnetic synchronous motor, realize the step-less adjustment of synchronous machine 0 ~ 120% rated speed, realize synchronous machine large torque startup optimization at the low rotational speed, synchronous machine can also carry out reversion operation as required.Frequency control unit inside is provided with cooling fan, for giving frequency converter internal heat dissipating.
There is not copper winding in the rotor of permagnetic synchronous motor, but adopts permanent magnet to produce magnetic field, decreases the loss of rotor winding; Motor pole adopts many pole design, the rated speed of motor can be positioned the comparatively slow-speed of revolution, realizes specified slow-speed of revolution long-time running, has and starts the features such as rotating speed is low, torque is large.The radiator fan 3 that permagnetic synchronous motor carries, runs, invariablenes turning speed under the power supply of independent current source, and air quantity by the impact of permagnetic synchronous motor running speed, does not guarantee the radiating requirements of permagnetic synchronous motor.
The job step of the utility model control device is as follows:
Step S1: to frequency control unit power transmission, setting converting operation target frequency, starts frequency control unit, starts the cooling fan of frequency control unit inside; Start Air-Cooling Island cooling blower.
Step S2: according to thermal power generation unit service requirement, adjustment converting operation frequency, makes Air-Cooling Island cooling blower move to rotating speed of target.
Step S3: according to unit operation needs, can arrange output at frequency control unit and turn to, and synchronous machine is reversed and runs, and set converting operation target frequency, start frequency control unit, start the cooling fan of frequency control unit inside, start Air-Cooling Island cooling blower.
Step S4: according to thermal power generation unit service requirement, adjustment converting operation frequency, makes Air-Cooling Island cooling blower move to rotating speed of target.
Above-described embodiment is only the utility model preferably execution mode; but execution mode of the present utility model is not restricted to the described embodiments; other are any do not deviate from Spirit Essence of the present utility model and principle under do change, modification, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection range of the present utility model.
Claims (6)
1. the control device of thermal power generation unit Air-Cooling Island cooling unit, is characterized in that, comprises frequency control unit, synchronous machine and power transmission shaft, and frequency control unit is connected with synchronous machine, and synchronous machine is connected with load blower fan by power transmission shaft.
2. the control device of thermal power generation unit Air-Cooling Island cooling unit according to claim 1, is characterized in that, also comprise cable, and described frequency control unit is connected with described synchronous machine by described cable.
3. the control device of thermal power generation unit Air-Cooling Island cooling unit according to claim 1, it is characterized in that, described synchronous machine is provided with radiator fan.
4. the control device of the thermal power generation unit Air-Cooling Island cooling unit according to claim 1 or 3, is characterized in that, described synchronous machine is permagnetic synchronous motor.
5. the control device of thermal power generation unit Air-Cooling Island cooling unit according to claim 4, is characterized in that, the magnetic pole of described synchronous machine adopts many pole design.
6. the control device of thermal power generation unit Air-Cooling Island cooling unit according to claim 1, is characterized in that, described frequency control unit carries out constant voltage constant frequency control or vector control to synchronous machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520373727.4U CN204794796U (en) | 2015-06-03 | 2015-06-03 | Thermal power unit air cooling island cooling unit's controlling means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520373727.4U CN204794796U (en) | 2015-06-03 | 2015-06-03 | Thermal power unit air cooling island cooling unit's controlling means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204794796U true CN204794796U (en) | 2015-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520373727.4U Expired - Fee Related CN204794796U (en) | 2015-06-03 | 2015-06-03 | Thermal power unit air cooling island cooling unit's controlling means |
Country Status (1)
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| CN (1) | CN204794796U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108361198A (en) * | 2018-05-14 | 2018-08-03 | 大唐环境产业集团股份有限公司 | A kind of the converting operation device and converting operation method of desulfurization roots blower |
| CN109888973A (en) * | 2019-01-24 | 2019-06-14 | 华能铜川照金煤电有限公司 | Thermal power plant air cooling blower fan alternating current asynchronous servo speed control device |
| CN111756305A (en) * | 2020-06-21 | 2020-10-09 | 中车永济电机有限公司 | Locomotive auxiliary converter topological structure |
-
2015
- 2015-06-03 CN CN201520373727.4U patent/CN204794796U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108361198A (en) * | 2018-05-14 | 2018-08-03 | 大唐环境产业集团股份有限公司 | A kind of the converting operation device and converting operation method of desulfurization roots blower |
| CN109888973A (en) * | 2019-01-24 | 2019-06-14 | 华能铜川照金煤电有限公司 | Thermal power plant air cooling blower fan alternating current asynchronous servo speed control device |
| CN111756305A (en) * | 2020-06-21 | 2020-10-09 | 中车永济电机有限公司 | Locomotive auxiliary converter topological structure |
| CN111756305B (en) * | 2020-06-21 | 2022-06-14 | 中车永济电机有限公司 | Locomotive auxiliary converter topological structure |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 |
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| CF01 | Termination of patent right due to non-payment of annual fee |