CN203233141U - A variable frequency motor independent cooling fan chain protection device - Google Patents
A variable frequency motor independent cooling fan chain protection device Download PDFInfo
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- CN203233141U CN203233141U CN 201320112129 CN201320112129U CN203233141U CN 203233141 U CN203233141 U CN 203233141U CN 201320112129 CN201320112129 CN 201320112129 CN 201320112129 U CN201320112129 U CN 201320112129U CN 203233141 U CN203233141 U CN 203233141U
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Abstract
Description
技术领域technical field
本实用新型涉及一种变频电动机独立冷却风扇连锁保护装置，属于电器技术领域。The utility model relates to a chain protection device for an independent cooling fan of a variable frequency motor, which belongs to the technical field of electric appliances.
背景技术Background technique
目前厂矿企业所使用的变频电动机采用了非同轴连接的冷却风扇，冷却风扇电机有独立电源控制。At present, the frequency conversion motors used by factories and mines use non-coaxial cooling fans, and the cooling fan motors are controlled by independent power sources.
主要存在问题：变频电动机采用独立冷却风扇，主电机和冷却风扇电机由双电路分别控制。当冷却风扇电机设备或者电路出现故障时，冷却风扇电机停止运行，而主电机仍继续运行，最终导致主电机无法冷却而烧毁。The main problem is that the variable frequency motor adopts an independent cooling fan, and the main motor and the cooling fan motor are controlled separately by dual circuits. When the cooling fan motor equipment or circuit breaks down, the cooling fan motor stops running, while the main motor continues to run, eventually causing the main motor to fail to cool and burn out.
发明内容Contents of the invention
针对目前变频电动机非同轴连接的冷却风扇电机发生故障停机时，无法自动停止保护主电机的问题，本实用新型提供一种变频电动机独立冷却风扇连锁保护装置。Aiming at the current problem that the cooling fan motor with non-coaxial connection of the frequency conversion motor cannot automatically stop and protect the main motor when it fails and stops, the utility model provides an independent cooling fan chain protection device for the frequency conversion motor.
本实用新型解决其技术问题所采用的技术方案是：The technical scheme that the utility model solves its technical problem adopts is:
一种变频电动机独立冷却风扇连锁保护装置，总开关的三条线连接变频器和风机开关；三条线的其中一根线连接控制开关；A variable frequency motor independent cooling fan interlock protection device, the three wires of the main switch are connected to the frequency converter and the fan switch; one of the three wires is connected to the control switch;
控制开关的另一端连接新加继电器KA的常开触点；The other end of the control switch is connected to the normally open contact of the newly added relay KA;
新加继电器KA的常开触点另一端连接停止按钮；The other end of the normally open contact of the newly added relay KA is connected to the stop button;
停止按钮的另一端连接变频器故障输出；The other end of the stop button is connected to the inverter fault output;
变频器故障输出的另一端连接启动按钮和风机接触器KM2的常开触点；The other end of the inverter fault output is connected to the start button and the normally open contact of the fan contactor KM2;
启动按钮的另一端连接主电机接触器KM1的第一线圈；The other end of the start button is connected to the first coil of the main motor contactor KM1;
风机接触器KM2的常开触点另一端连接风机接触器KM2的第二线圈；The other end of the normally open contact of the fan contactor KM2 is connected to the second coil of the fan contactor KM2;
第一线圈与第二线圈连接后与新加继电器的线圈KA的第三线圈连接；After the first coil is connected to the second coil, it is connected to the third coil of the newly added coil KA of the relay;
新加继电器的第三线圈的另一端连接风机开关的一条线路；The other end of the third coil of the newly added relay is connected to a line of the fan switch;
风机开关的另一端三条线路连接风机接触器KM2的常开触点；The three lines at the other end of the fan switch are connected to the normally open contacts of the fan contactor KM2;
风机接触器KM2的常开触点的另一端连接冷却风机电机；The other end of the normally open contact of the fan contactor KM2 is connected to the cooling fan motor;
变频器的另一端三条线路连接主电机接触器KM1的常开触点；主电机接触器KM1的常开触点的另一端连接主电机。The three lines at the other end of the inverter are connected to the normally open contact of the main motor contactor KM1; the other end of the normally open contact of the main motor contactor KM1 is connected to the main motor.
本实用新型的效果是：经过试验和运行，当冷却风扇电机设备或者电路出现问题时，可以连锁停止主电机，起到了保护主电机的目的。The effect of the utility model is: after testing and operation, when the cooling fan motor equipment or circuit has problems, the main motor can be stopped in chain, and the purpose of protecting the main motor is achieved.
附图说明Description of drawings
当结合附图考虑时，通过参照下面的详细描述，能够更完整更好地理解本实用新型以及容易得知其中许多伴随的优点，但此处所说明的附图用来提供对本实用新型的进一步理解，构成本实用新型的一部分，本实用新型的示意性实施例及其说明用于解释本实用新型，并不构成对本实用新型的不当限定，如图其中：A more complete and better understanding of the invention, and many of its attendant advantages, will be readily appreciated by reference to the following detailed description when considered in conjunction with the accompanying drawings, but the accompanying drawings illustrated herein are intended to provide a further understanding of the invention , constituting a part of the utility model, the schematic embodiment of the utility model and its description are used to explain the utility model, and do not constitute an improper limitation of the utility model, as shown in the figure:
图1为本实用新型的变频电机电路连接图。Fig. 1 is the circuit connection diagram of the frequency conversion motor of the present invention.
下面结合附图和实施例对本实用新型进一步说明。Below in conjunction with accompanying drawing and embodiment the utility model is further described.
具体实施方式Detailed ways
一种变频电动机独立冷却风扇连锁保护装置，总开关QF1的三条线连接变频器3和风机开关（热磁保护开关）QF2；三条线的其中一根线连接控制开关QF3；A variable frequency motor independent cooling fan chain protection device, the three lines of the main switch QF1 are connected to the
控制开关QF3的另一端连接新加继电器KA的常开触点KA-2；The other end of the control switch QF3 is connected to the normally open contact KA-2 of the newly added relay KA;
新加继电器KA的常开触点KA-2另一端连接停止按钮ST；The other end of the normally open contact KA-2 of the newly added relay KA is connected to the stop button ST;
停止按钮ST的另一端连接变频器故障输出BP；The other end of the stop button ST is connected to the inverter fault output BP;
变频器故障输出BP的另一端连接启动按钮SQ和风机接触器KM2的常开触点KM2-2；The other end of the inverter fault output BP is connected to the start button SQ and the normally open contact KM2-2 of the fan contactor KM2;
启动按钮SQ的另一端连接主电机接触器KM1的第一线圈KM1-1；The other end of the start button SQ is connected to the first coil KM1-1 of the main motor contactor KM1;
风机接触器KM2的常开触点KM2-2另一端连接风机接触器KM2的第二线圈KM2-1；The other end of the normally open contact KM2-2 of the fan contactor KM2 is connected to the second coil KM2-1 of the fan contactor KM2;
第二线圈KM2-1与第一线圈KM1-1连接后与新加继电器的线圈KA的第三线圈KA-1连接；After the second coil KM2-1 is connected with the first coil KM1-1, it is connected with the third coil KA-1 of the newly added coil KA of the relay;
新加继电器的第三线圈KA-1的另一端连接风机开关（热磁保护开关）QF2的一条线路；The other end of the third coil KA-1 of the newly added relay is connected to a line of the fan switch (thermal magnetic protection switch) QF2;
风机开关（热磁保护开关）QF2的另一端三条线路连接风机接触器KM2的常开触点KM2-12；The three lines at the other end of the fan switch (thermal magnetic protection switch) QF2 are connected to the normally open contact KM2-12 of the fan contactor KM2;
风机接触器KM2的常开触点KM2-12的另一端连接冷却风机电机2；The other end of the normally open contact KM2-12 of the fan contactor KM2 is connected to the
变频器3的另一端三条线路连接主电机接触器KM1的常开触点KM1-2；主电机接触器KM1的常开触点KM1-2的另一端连接主电机1。The three lines at the other end of the
主电机接触器KM1通断控制主电机1的启停，风机接触器KM2通断控制冷却风机电机2的启停，风机开关QF2为冷却风机电机2的过载保护开关。The main motor contactor KM1 is on and off to control the start and stop of the
当总开关QF1、风机开关QF2、控制开关QF3闭合后，按下启动按钮SQ，主电机接触器KM1、风机接触器KM2的线圈得电铁芯吸合，主电机1接触器KM1、风机接触器KM2的主触点闭合，主电机1和冷却风机电机2运转，同时风机接触器KM2的常开触点吸合也完成了控制电路自锁。按下启动按钮ST后，控制电路断电，同理主电机1和冷却风机电机2停止。When the main switch QF1, the fan switch QF2, and the control switch QF3 are closed, press the start button SQ, the coils of the main motor contactor KM1 and the fan contactor KM2 are energized and the iron core is closed, and the
一个新加继电器KA，在冷却风机电机热磁保护开关后的三相线路的一相电路中接入新加继电器KA的线圈，在控制电路的控制开关和停止按钮之间接入新加继电器KA的常开触点KA-2。变频主电机启停功能不变，当冷却风机电机2故障时，风机开关QF2断开，新加继电器KA的第三线圈KA-1失电，控制电路中新加继电器KA的常开触点KA-2断开，这样就断开了主电机1与冷却风机电机2的控制电路，主电机1和冷却风机电机2停止。A newly added relay KA, the coil of the newly added relay KA is connected to the one-phase circuit of the three-phase line behind the thermal magnetic protection switch of the cooling fan motor, and the coil of the newly added relay KA is connected between the control switch and the stop button of the control circuit Normally open contact KA-2. The start-stop function of the variable frequency main motor remains unchanged. When the
如上所述，对本实用新型的实施例进行了详细地说明，但是只要实质上没有脱离本实用新型的发明点及效果可以有很多的变形，这对本领域的技术人员来说是显而易见的。因此，这样的变形例也全部包含在本实用新型的保护范围之内。As mentioned above, the embodiment of the present invention has been described in detail, but it is obvious to those skilled in the art that many modifications can be made as long as the inventive points and effects of the present invention are not substantially deviated from. Therefore, such modified examples are all included in the protection scope of the present invention.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320112129 CN203233141U (en) | 2013-03-13 | 2013-03-13 | A variable frequency motor independent cooling fan chain protection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320112129 CN203233141U (en) | 2013-03-13 | 2013-03-13 | A variable frequency motor independent cooling fan chain protection device |
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| CN203233141U true CN203233141U (en) | 2013-10-09 |
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| CN 201320112129 Expired - Fee Related CN203233141U (en) | 2013-03-13 | 2013-03-13 | A variable frequency motor independent cooling fan chain protection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947678A (en) * | 2017-10-30 | 2018-04-20 | 华润电力（贺州）有限公司 | A kind of variable-frequency motor transforms circuit |
| CN107994545A (en) * | 2017-12-12 | 2018-05-04 | 深圳市英威腾电气股份有限公司 | The protection circuit and electric system of a kind of wind turbine |
-
2013
- 2013-03-13 CN CN 201320112129 patent/CN203233141U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947678A (en) * | 2017-10-30 | 2018-04-20 | 华润电力（贺州）有限公司 | A kind of variable-frequency motor transforms circuit |
| CN107994545A (en) * | 2017-12-12 | 2018-05-04 | 深圳市英威腾电气股份有限公司 | The protection circuit and electric system of a kind of wind turbine |
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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: 20131009 Termination date: 20210313 |
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| CF01 | Termination of patent right due to non-payment of annual fee |