CN205377443U - Cooling tower fan electrical power generating system - Google Patents
Cooling tower fan electrical power generating system Download PDFInfo
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- CN205377443U CN205377443U CN201620031436.1U CN201620031436U CN205377443U CN 205377443 U CN205377443 U CN 205377443U CN 201620031436 U CN201620031436 U CN 201620031436U CN 205377443 U CN205377443 U CN 205377443U
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Abstract
本实用新型公开了一种冷却塔风机电源系统，它的第一冷却塔风机水冷控制器和第二冷却塔风机水冷控制器的控制信号输出端均连接变频器的控制信号输入端，进线电源的电源接口通过主回路开关连接变频器的第一电源接口，变频器的第二电源接口连接电压监视继电器的线圈一端，电压监视继电器的线圈另一端通过安全开关连接冷却塔风机的供电端；变频器故障跳闸常开开关接点、电压监视继电器的失压报警常开开关接点和交流继电器的线圈串联在监控电源两端；旁路开关的一端连接进线电源的电源接口，旁路开关的另一端通过交流继电器的主回路常开开关接点连接电压监视继电器的线圈另一端。该系统保证在变频器故障时，风机仍可继续稳定运行。
The utility model discloses a cooling tower fan power supply system, the control signal output ends of the first cooling tower fan water cooling controller and the second cooling tower fan water cooling controller are connected to the control signal input end of the frequency converter, and the incoming power supply The power interface of the inverter is connected to the first power interface of the inverter through the main circuit switch, the second power interface of the inverter is connected to one end of the coil of the voltage monitoring relay, and the other end of the coil of the voltage monitoring relay is connected to the power supply end of the cooling tower fan through a safety switch; The normally open switch contact of the fault tripping of the voltage monitoring relay, the normally open switch contact of the voltage monitoring relay and the coil of the AC relay are connected in series at both ends of the monitoring power supply; one end of the bypass switch is connected to the power interface of the incoming power supply, and the other end of the bypass switch Connect the other end of the coil of the voltage monitoring relay through the normally open switch contact of the main circuit of the AC relay. This system ensures that the fan can continue to run stably when the frequency converter fails.
Description
技术领域technical field
本实用新型涉及电力设备维护技术领域，具体地指一种冷却塔风机电源系统。The utility model relates to the technical field of electric equipment maintenance, in particular to a cooling tower fan power supply system.
背景技术Background technique
现有的换流站冷却塔风机电源采用变频器控制转速。电源由400V配电柜连至变频器，再由变频器经过安全开关后连接至风机电机。换流站内冷却塔风机主要是用于主设备换流阀的散热。风机的运行情况直接影响换流站的直流功率输送。现有的冷却塔风机电源存在以下缺点：1、当出现变频器内部故障而停运时，风机无法工作，直接影响换流站直流功率的输送。2、当变频器出现瞬时故障时，需手动复归变频器报警，风机才能再次启动。影响了主设备的连续运行。The fan power supply of the cooling tower of the existing converter station uses a frequency converter to control the speed. The power supply is connected to the frequency converter by the 400V power distribution cabinet, and then the frequency converter is connected to the fan motor after passing through the safety switch. The fan of the cooling tower in the converter station is mainly used for heat dissipation of the converter valve of the main equipment. The operation of the fan directly affects the DC power transmission of the converter station. The existing cooling tower fan power supply has the following disadvantages: 1. When the frequency converter fails due to an internal failure, the fan cannot work, which directly affects the DC power transmission of the converter station. 2. When the frequency converter has an instantaneous fault, the fan needs to be reset manually to start the fan again. Affected the continuous operation of the main equipment.
实用新型内容Utility model content
本实用新型的目的就是要提供一种冷却塔风机电源系统，该系统保证在变频器故障时，风机仍可继续稳定运行。The purpose of this utility model is to provide a cooling tower fan power supply system, which ensures that the fan can continue to run stably when the frequency converter fails.
为实现此目的，本实用新型所设计的一种冷却塔风机电源系统，它包括第一冷却塔风机水冷控制器、第二冷却塔风机水冷控制器、进线电源、主回路开关、变频器、变频器故障跳闸常开开关接点、安全开关和冷却塔风机，其特征在于：它还包括电压监视继电器、旁路开关、交流继电器和监控电源，其中，所述第一冷却塔风机水冷控制器和第二冷却塔风机水冷控制器的控制信号输出端均连接变频器的控制信号输入端，所述进线电源的电源接口通过主回路开关连接变频器的第一电源接口，变频器的第二电源接口连接电压监视继电器的线圈一端，电压监视继电器的线圈另一端通过安全开关连接冷却塔风机的供电端；In order to achieve this purpose, a cooling tower fan power supply system designed by the utility model includes the first cooling tower fan water cooling controller, the second cooling tower fan water cooling controller, incoming power supply, main circuit switch, frequency converter, The inverter fault trip normally open switch contact, the safety switch and the cooling tower fan are characterized in that it also includes a voltage monitoring relay, a bypass switch, an AC relay and a monitoring power supply, wherein the first cooling tower fan water cooling controller and The control signal output terminals of the second cooling tower fan water cooling controller are all connected to the control signal input terminals of the frequency converter, the power interface of the incoming power supply is connected to the first power interface of the frequency converter through the main circuit switch, and the second power supply of the frequency converter The interface is connected to one end of the coil of the voltage monitoring relay, and the other end of the coil of the voltage monitoring relay is connected to the power supply end of the cooling tower fan through a safety switch;
所述变频器故障跳闸常开开关接点、电压监视继电器的失压报警常开开关接点和交流继电器的线圈串联在监控电源的两端；The normally open switch contacts for the fault tripping of the frequency converter, the voltage loss alarm normally open switch contacts of the voltage monitoring relay and the coils of the AC relay are connected in series at both ends of the monitoring power supply;
所述旁路开关的一端连接进线电源的电源接口，旁路开关的另一端通过交流继电器的主回路常开开关接点连接电压监视继电器的线圈另一端。One end of the bypass switch is connected to the power interface of the incoming power supply, and the other end of the bypass switch is connected to the other end of the coil of the voltage monitoring relay through the normally open switch contact of the main circuit of the AC relay.
它还包括控制电源，所述控制电源的电源接口连接交流继电器的常开报警开关接点的一端，常开报警开关接点的另一端分别连接第一冷却塔风机水冷控制器和第二冷却塔风机水冷控制器的报警信号输入端。It also includes a control power supply, the power interface of the control power supply is connected to one end of the normally open alarm switch contact of the AC relay, and the other end of the normally open alarm switch contact is respectively connected to the first cooling tower fan water cooling controller and the second cooling tower fan water cooling The alarm signal input terminal of the controller.
本实用新型的冷却塔风机的电源系统主回路是由进线电源、主回路开关、变频器、电压监视继电器、安全开关、冷却塔风机构成。正常情况下变频器的投入和退出由相互冗余的两个冷却塔风机水冷控制器控制。为实现变频器故障时工频电源投入功能，在400V进线电源与安全开关之间增加了旁通回路。当变频器跳闸和/或变频器输出失压时旁路投入。该设计保证了仅在变频器故障时旁路可以自动投入。当需要手动投入旁路时，也可以手动合上交流继电器实现。保证了在变频器故障时，风机仍可继续稳定运行，显著提高了冷却塔风机的可用率。The main circuit of the power supply system of the cooling tower fan of the utility model is composed of an incoming power supply, a main circuit switch, a frequency converter, a voltage monitoring relay, a safety switch, and a cooling tower fan. Under normal circumstances, the input and exit of the frequency converter are controlled by two redundant cooling tower fan water-cooling controllers. In order to realize the power frequency power input function when the inverter fails, a bypass circuit is added between the 400V incoming power supply and the safety switch. Bypass enabled when the drive trips and/or the drive output loses voltage. This design ensures that the bypass can be put into operation automatically only when the inverter fails. When the bypass needs to be switched on manually, it can also be realized by manually closing the AC relay. It ensures that the fan can continue to run stably when the frequency converter fails, which significantly improves the availability of the cooling tower fan.
附图说明Description of drawings
图1为本实用新型的结构框图；Fig. 1 is a block diagram of the utility model;
其中，1—第一冷却塔风机水冷控制器、2—第二冷却塔风机水冷控制器、3—进线电源、4—主回路开关、5—变频器、5.1—变频器故障跳闸常开开关接点、6—电压监视继电器的线圈、6.1—电压监视继电器的失压报警常开开关接点、7—安全开关、8—冷却塔风机、9—旁路开关、10—交流继电器的线圈、10.1—交流继电器的主回路常开开关接点、10.2—交流继电器的常开报警开关接点、11—监控电源、12—控制电源。Among them, 1—the first cooling tower fan water cooling controller, 2—the second cooling tower fan water cooling controller, 3—incoming power supply, 4—main circuit switch, 5—inverter, 5.1—inverter fault trip normally open switch Contact, 6—coil of voltage monitoring relay, 6.1—voltage-loss alarm normally open switch contact of voltage monitoring relay, 7—safety switch, 8—cooling tower fan, 9—bypass switch, 10—coil of AC relay, 10.1— The main circuit normally open switch contact of the AC relay, 10.2—the normally open alarm switch contact of the AC relay, 11—monitoring power supply, 12—control power supply.
具体实施方式detailed description
以下结合附图和具体实施例对本实用新型作进一步的详细说明：Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail:
如图1所示的冷却塔风机电源系统，它包括第一冷却塔风机水冷控制器1、第二冷却塔风机水冷控制器2、进线电源3、主回路开关4、变频器5、变频器故障跳闸常开开关接点5.1、安全开关7和冷却塔风机8，它还包括电压监视继电器、旁路开关9、交流继电器和监控电源11，其中，所述第一冷却塔风机水冷控制器1和第二冷却塔风机水冷控制器2的控制信号输出端均连接变频器5的控制信号输入端，所述进线电源3的电源接口通过主回路开关4连接变频器5的第一电源接口，变频器5的第二电源接口连接电压监视继电器的线圈6一端，电压监视继电器的线圈6另一端通过安全开关7连接冷却塔风机8的供电端；The cooling tower fan power supply system shown in Figure 1 includes the first cooling tower fan water cooling controller 1, the second cooling tower fan water cooling controller 2, the incoming power supply 3, the main circuit switch 4, the frequency converter 5, the frequency converter Fault trip normally open switch contact 5.1, safety switch 7 and cooling tower fan 8, it also includes voltage monitoring relay, bypass switch 9, AC relay and monitoring power supply 11, wherein, said first cooling tower fan water cooling controller 1 and The control signal output terminals of the second cooling tower fan water cooling controller 2 are all connected to the control signal input terminals of the frequency converter 5, and the power interface of the incoming power supply 3 is connected to the first power interface of the frequency converter 5 through the main circuit switch 4, and the frequency conversion The second power interface of the device 5 is connected to one end of the coil 6 of the voltage monitoring relay, and the other end of the coil 6 of the voltage monitoring relay is connected to the power supply end of the cooling tower fan 8 through the safety switch 7;
所述变频器故障跳闸常开开关接点5.1、电压监视继电器的失压报警常开开关接点6.1和交流继电器的线圈10串联在监控电源11的两端；The normally open switch contact 5.1 of the frequency converter fault trip, the voltage monitoring relay's voltage loss alarm normally open switch contact 6.1 and the coil 10 of the AC relay are connected in series at both ends of the monitoring power supply 11;
所述旁路开关9的一端连接进线电源3的电源接口，旁路开关9的另一端通过交流继电器的主回路常开开关接点10.1连接电压监视继电器的线圈6另一端。One end of the bypass switch 9 is connected to the power interface of the incoming power supply 3, and the other end of the bypass switch 9 is connected to the other end of the coil 6 of the voltage monitoring relay through the normally open switch contact 10.1 of the main circuit of the AC relay.
上述技术方案中，变频器5的工作状态由第一冷却塔风机水冷控制器1和第二冷却塔风机水冷控制器2控制。In the above technical solution, the working state of the frequency converter 5 is controlled by the first cooling tower fan water cooling controller 1 and the second cooling tower fan water cooling controller 2 .
上述技术方案中，它还包括控制电源12，所述控制电源12的电源接口连接交流继电器的常开报警开关接点10.2的一端，常开报警开关接点10.2的另一端分别连接第一冷却塔风机水冷控制器1和第二冷却塔风机水冷控制器2的报警信号输入端。In the above technical solution, it also includes a control power supply 12, the power supply interface of the control power supply 12 is connected to one end of the normally open alarm switch contact 10.2 of the AC relay, and the other end of the normally open alarm switch contact 10.2 is connected to the first cooling tower fan water cooling respectively. The alarm signal input terminal of the controller 1 and the second cooling tower fan water cooling controller 2.
上述技术方案中，所述进线电源3的电压为400V。In the above technical solution, the voltage of the incoming power supply 3 is 400V.
上述技术方案中，所述第一冷却塔风机水冷控制器1和第二冷却塔风机水冷控制器2为相互冗余的两个冷却塔风机水冷控制器。In the above technical solution, the first cooling tower fan water cooling controller 1 and the second cooling tower fan water cooling controller 2 are two mutually redundant cooling tower fan water cooling controllers.
上述技术方案中，旁路开关9为常闭开关，用于人工手动对旁路进行控制。In the above technical solution, the bypass switch 9 is a normally closed switch, which is used to manually control the bypass.
本实用新型中冷却塔风机8的启停控制和转速调节由互为冗余的第一冷却塔风机水冷控制器1和第二冷却塔风机水冷控制器2来实现。风机转速从300转/秒到2000转/秒可调。当直接投入工频电压时冷却塔风机8转速为最大转速。The start-stop control and rotation speed adjustment of the cooling tower fan 8 in the utility model are realized by the first cooling tower fan water-cooling controller 1 and the second cooling tower fan water-cooling controller 2 which are redundant to each other. Fan speed is adjustable from 300 rpm to 2000 rpm. When the power frequency voltage is directly input, the cooling tower fan 8 rotates at the maximum speed.
本实用新型的工作过程为：变频器5正常工作时，进线电源3输出的电源依次经过主回路开关4、变频器5、电压监视继电器的线圈6和安全开关7给冷却塔风机8供电，变频器5在第一冷却塔风机水冷控制器1和第二冷却塔风机水冷控制器2的控制下对风机转速进行控制，当变频器5故障时，变频器故障跳闸常开开关接点5.1和电压监视继电器的线圈6的失压报警常开开关接点6.1闭合，监控电源11给交流继电器的线圈10供电，使得交流继电器的常开报警开关接点10.2和交流继电器的常开报警开关接点10.2闭合，此时，进线电源3输出的电源依次经过旁路开关9、交流继电器的常开报警开关接点10.2和安全开关7给冷却塔风机8供电，同时，控制电源12通过交流继电器的常开报警开关接点10.2向第一冷却塔风机水冷控制器1和第二冷却塔风机水冷控制器2发出变频器5故障的报警信号。The working process of the present utility model is: when the frequency converter 5 works normally, the power supply output by the incoming power supply 3 passes through the main circuit switch 4, the frequency converter 5, the coil 6 of the voltage monitoring relay and the safety switch 7 to supply power to the cooling tower blower fan 8, The inverter 5 controls the fan speed under the control of the first cooling tower fan water-cooling controller 1 and the second cooling tower fan water-cooling controller 2. When the inverter 5 fails, the inverter fault trips the normally open switch contact 5.1 and the voltage The voltage loss alarm normally open switch contact 6.1 of the coil 6 of the monitoring relay is closed, and the monitoring power supply 11 supplies power to the coil 10 of the AC relay, so that the normally open alarm switch contact 10.2 of the AC relay and the normally open alarm switch contact 10.2 of the AC relay are closed. , the power output by the incoming power supply 3 passes through the bypass switch 9, the normally open alarm switch contact 10.2 of the AC relay and the safety switch 7 to supply power to the cooling tower fan 8, and at the same time, the control power supply 12 passes through the normally open alarm switch contact of the AC relay. 10.2 Send an alarm signal of frequency converter 5 failure to the first cooling tower fan water-cooling controller 1 and the second cooling tower fan water-cooling controller 2 .
本说明书未作详细描述的内容属于本领域专业技术人员公知的现有技术。The content not described in detail in this specification belongs to the prior art known to those skilled in the art.
Claims (4)
- null1. a blower fan of cooling tower power-supply system，It includes the first blower fan of cooling tower water-cooling controller (1)、Second blower fan of cooling tower water-cooling controller (2)、Incoming power (3)、Major loop switch (4)、Converter (5)、Frequency converter failure tripping operation normal open switch contact (5.1)、Safety switch (7) and blower fan of cooling tower (8)，It is characterized in that: it also includes monitoring voltage relay、By-pass switch (9)、AC relay and monitoring power supply (11)，Wherein，The control signal outfan of described first blower fan of cooling tower water-cooling controller (1) and the second blower fan of cooling tower water-cooling controller (2) is all connected with the control signal input of converter (5)，The power interface of described incoming power (3) connects the first power interface of converter (5) by major loop switch (4)，The second source interface of converter (5) connects coil (6) one end of monitoring voltage relay，Coil (6) other end of monitoring voltage relay connects the feeder ear of blower fan of cooling tower (8) by safety switch (7)；Described frequency converter failure tripping operation normal open switch contact (5.1), decompression warning normal open switch contact (6.1) of monitoring voltage relay and the coil (10) of AC relay are connected on the two ends of monitoring power supply (11)；One end of described by-pass switch (9) connects the power interface of incoming power (3), and the other end of by-pass switch (9) connects coil (6) other end of monitoring voltage relay by major loop normal open switch contact (10.1) of AC relay.
- 2. blower fan of cooling tower power-supply system according to claim 1, it is characterized in that: it also includes controlling power supply (12), the power interface of described control power supply (12) connects one end of the normally opened alarm switch contact (10.2) of AC relay, and the other end of normally opened alarm switch contact (10.2) connects the first blower fan of cooling tower water-cooling controller (1) and the alarm signal input of the second blower fan of cooling tower water-cooling controller (2) respectively.
- 3. blower fan of cooling tower power-supply system according to claim 1 and 2, it is characterised in that: the voltage of described incoming power (3) is 400V.
- 4. blower fan of cooling tower power-supply system according to claim 1 and 2, it is characterised in that: two blower fan of cooling tower water-cooling controllers that described first blower fan of cooling tower water-cooling controller (1) and the second blower fan of cooling tower water-cooling controller (2) they are mutual redundancy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620031436.1U CN205377443U (en) | 2016-01-13 | 2016-01-13 | Cooling tower fan electrical power generating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620031436.1U CN205377443U (en) | 2016-01-13 | 2016-01-13 | Cooling tower fan electrical power generating system |
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| CN205377443U true CN205377443U (en) | 2016-07-06 |
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| CN201620031436.1U Expired - Fee Related CN205377443U (en) | 2016-01-13 | 2016-01-13 | Cooling tower fan electrical power generating system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106505565A (en) * | 2016-12-09 | 2017-03-15 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Cooling tower fan motor power supply circuit |
| CN113589859A (en) * | 2021-07-20 | 2021-11-02 | 苏州市东雄精密模具塑业有限公司 | Cooling tower water temperature control device |
-
2016
- 2016-01-13 CN CN201620031436.1U patent/CN205377443U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106505565A (en) * | 2016-12-09 | 2017-03-15 | 中国南方电网有限责任公司超高压输电公司贵阳局 | Cooling tower fan motor power supply circuit |
| CN113589859A (en) * | 2021-07-20 | 2021-11-02 | 苏州市东雄精密模具塑业有限公司 | Cooling tower water temperature control device |
| CN113589859B (en) * | 2021-07-20 | 2022-08-09 | 苏州市东雄精密模具塑业有限公司 | Cooling tower water temperature control device |
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