Electrical linkage ventilation system for high-voltage high-capacity frequency converter

Abstract

The utility model provides an electrical linkage ventilation system for a high-voltage large-capacity frequency converter, which comprises an axial flow fan, a shutter arranged on the front side of the axial flow fan and an automatic plugboard arranged on the rear side of the axial flow fan, the automatic plugboard is connected with the axial flow fan through a connecting frame, and the connecting frame comprises a plugboard moving part and a plugboard driving part. An inserting plate driving motor is arranged on the inserting plate driving part, and the automatic inserting plate is driven by the inserting plate driving motor to move left and right on the inserting plate moving part; the automatic plugboard is provided with a plugboard opening limit switch and a plugboard closing limit switch which are respectively and electrically connected with the main power supply and a fan motor of the axial flow fan, after the automatic plugboard moves rightwards in place, the plugboard opening limit switch is closed, the fan motor is electrified, the axial flow fan runs, and after the automatic plugboard moves leftwards in place, the plugboard closing limit switch is closed. And when the fan motor is powered off, the axial flow fan stops running. The device is good in leakproofness, and when the device stops running, dust, rain and snow cannot enter the device room to pollute the device.

Description

Technical field:

[0001] The utility model relates to the technical field of axial flow fans, in particular to an electrical linkage ventilation system for high-voltage and large-capacity frequency converters. Background technology:

[0002] After high-voltage and large-capacity inverter equipment has been running in the equipment room for a long time, the temperature it generates is relatively high, and the heat is not easy to dissipate. The original ventilation system uses traditional axial flow fans to exhaust and dissipate heat. However, the traditional axial flow fans have poor airtightness. When they stop running and there is no ventilation, dust, rain and snow can easily enter the equipment room and pollute the equipment. Summary of the invention:

[0003] In order to solve the above problems, a ventilation system with good sealing performance is provided. When the system stops running and is not ventilated, dust, rain and snow cannot enter the equipment room to pollute the equipment. The utility model provides an electrical linkage ventilation system for high-voltage and large-capacity inverters, including an axial flow fan and a shutter arranged on the front side of the axial flow fan and an automatic plug plate arranged on the rear side of the axial flow fan. The automatic plug plate can automatically move left and right on the rear side of the axial flow fan. When the automatic plug plate moves to the right, the rear side of the axial flow fan is opened for ventilation. When the automatic plug plate moves to the left, the rear side of the axial flow fan is sealed and not ventilated.

[0004] The automatic plug-in plate is connected to the axial flow fan via a connecting frame fixed to the rear side of the axial flow fan, and the connecting frame further comprises a plug-in plate moving part and a plug-in plate driving part, and a plug-in plate driving motor is provided on the plug-in plate driving part. The automatic plug-in plate can automatically move left and right on the plug-in plate moving part under the drive of the plug-in plate driving motor.

[0005] The automatic plug plate is provided with a plug plate opening limit switch and a plug plate closing limit switch, and the plug plate opening limit switch and the plug plate closing limit switch are electrically connected to the main power supply and the fan motor of the axial flow fan respectively. When the automatic plug plate moves to the right into position, the plug plate opening limit switch is closed, the plug plate drive motor is powered off, the fan motor is powered on, and the axial flow fan starts to run. When the automatic plug plate moves to the left into position, the plug plate closing limit switch is closed, the plug plate drive motor is powered off, the fan motor is powered off, and the axial flow fan stops running.

[0006] The plug plate moving part is provided with a plug plate limiting slot and a plug plate transmission screw, and the automatic plug plate can reciprocate left and right in the plug plate limiting slot under the drive of the plug plate transmission screw. A screw sleeve is fixedly provided at the center of the right end of the automatic plug plate, and the screw sleeve is connected to the plug plate transmission screw through a thread. When the plug plate transmission screw rotates forward, the screw sleeve sleeved on the plug plate transmission screw moves to the right on the plug plate transmission screw, thereby driving the automatic plug plate to move to the right. When the plug plate transmission screw is reversed, the screw sleeve sleeved on the plug plate transmission screw moves to the left on the plug plate transmission screw, thereby driving the automatic plug plate to move to the left.

[0007] The plugboard driving part is also provided with a reducer, the plugboard driving motor is connected to the reducer, and the output shaft of the reducer is fixedly connected to the plugboard transmission screw.

[0008] This solution adds a shutter on the outside of the axial flow fan and an automatic plug plate on the inside. The automatic plug plate is linked with the axial flow fan. Each time ventilation is performed, the axial flow fan starts and the automatic plug plate opens for ventilation. After ventilation is completed, the fan stops and the automatic plug plate closes to ensure airtightness.

[0009] Benefits to equipment: When ventilated, air is exhausted outwards. Dust, rain and snow will not enter the equipment room under the action of wind pressure to pollute the equipment. When there is no ventilation, the inner automatic plug-in board is closed. Dust, rain and snow will not enter the equipment room to pollute the equipment. Description of the drawings:

[0010] Figure 1 It is a top view schematic diagram of the utility model when the automatic plug board is closed.

[0011] Figure 2 It is a rear view schematic diagram of the utility model when the automatic plug board is closed.

[0012] Figure 3 It is a top view schematic diagram of the utility model when the automatic plug board is opened.

[0013] Figure 4 It is a rear view schematic diagram of the utility model when the automatic plug board is opened.

[0014] Figure 5 The utility model is a schematic diagram of the circuit connection between the automatic plug board and the fan motor.

[0015] Figure 6 This is a schematic diagram of the electrical control circuit of the utility model.

[0016] Figure ID:

[0017] 1. Axial fan 2. Shutters 3. Automatic plug board 4. Connection frame

[0018] 4-1, plug-in board moving part 4-2, plug-in board driving part 5, plug-in board driving motor

[0019] 6. Plug-in board open limit switch 7. Plug-in board close limit switch 8. Fan motor

[0020] 9. Insert plate limit slot 10. Insert plate transmission screw 11. Screw sleeve 12. Reducer Specific implementation method:

[0021] like Figure 1-Figure 4 As shown, the utility model provides an electrical linkage ventilation system for a high-voltage and large-capacity inverter, comprising an axial flow fan 1 and a shutter 2 arranged on the front side of the axial flow fan 1 and an automatic plug plate 3 arranged on the rear side of the axial flow fan 1, wherein the automatic plug plate 3 can automatically move left and right at the rear side of the axial flow fan 1, when the automatic plug plate 3 moves to the right, the rear side of the axial flow fan 1 is opened for ventilation, and when the automatic plug plate 3 moves to the left, the rear side of the axial flow fan 1 is closed and not ventilated.

[0022] The automatic plug-in plate 3 is connected to the axial flow fan 1 via a connecting frame 4 fixed to the rear side of the axial flow fan 1. The connecting frame 4 includes a plug-in plate moving part 4-1 and a plug-in plate driving part 4-2. A plug-in plate driving motor 5 is provided on the plug-in plate driving part 4-2. The automatic plug-in plate 3 can automatically move left and right on the plug-in plate moving part 4-1 under the drive of the plug-in plate driving motor 5.

[0023] The automatic plug plate 3 is provided with a plug plate opening limit switch 6 and a plug plate closing limit switch 7, and the plug plate opening limit switch 6 and the plug plate closing limit switch 7 are electrically connected to the main power supply and the fan motor 8 of the axial flow fan 1 respectively. When the automatic plug plate 3 moves to the right into position, the plug plate opening limit switch 6 is closed, the plug plate drive motor 5 is powered off, the fan motor 8 is powered on, and the axial flow fan 1 starts to run. When the automatic plug plate 3 moves to the left into position, the plug plate closing limit switch 7 is closed, the plug plate drive motor 5 is powered off, the fan motor 8 is powered off, and the axial flow fan 1 stops running.

[0024] The plug plate moving part 4-1 is provided with a plug plate limiting slot 9 and a plug plate transmission screw 10. The automatic plug plate 3 can reciprocate left and right in the plug plate limiting slot 9 driven by the plug plate transmission screw 10. A screw sleeve 11 is fixedly provided at the center of the right end of the automatic plug plate 3. The screw sleeve 11 is connected to the plug plate transmission screw 10 by threads. When the plug plate transmission screw 10 rotates forward, the screw sleeve 11 mounted on the plug plate transmission screw 10 moves to the right on the plug plate transmission screw 10, thereby driving the automatic plug plate 3 to move to the right. When the plug plate transmission screw 10 is reversed, the screw sleeve 11 mounted on the plug plate transmission screw 10 moves to the left on the plug plate transmission screw 10, thereby driving the automatic plug plate 3 to move to the left.

[0025] The plugboard driving part 4 - 2 is also provided with a reducer 12 , the plugboard driving motor 5 is connected to the reducer 12 , and the output shaft of the reducer 12 is fixedly connected to the plugboard transmission screw 10 .

[0026] like Figure 5-Figure 6 Shown is the electrical control circuit diagram of the utility model.

[0027] System operation instructions:

[0028] System start: Press the start button, the control circuit is connected through the thermal relay 6FR, button 6SBQ1, intermediate relay closed point KA1-K, and contactor 6KM2 closed point, the valve opening control contactor 6KM1 coil is energized, the contactor 6KM1 main contact is closed, the plug plate drive motor 5 forward circuit is connected, the plug plate drive motor 5 operating mechanism rotates forward, driving the plug plate transmission screw 10 to rotate forward, the plug plate transmission screw 10 thread rotation drives the automatic plug plate 3 to move to the right, after the automatic plug plate 3 moves into place, the plug plate opening limit switch 6 (K1) is started, the plug plate opening limit switch 6 (K1) open point is closed, the control circuit is connected through K1, the intermediate relay KA1-K coil is energized, the intermediate relay KA1-K closed point is opened, the valve opening circuit is de-energized, the plug plate opening limit switch 6 (K1) open point is closed, and the K1 fan start control circuit 7KM is energized, the fan main circuit 7KM main contact is closed, and the axial flow fan 1 is started.

[0029] System stop: Press the start button, the control circuit is connected through the thermal relay 6FR, button 6SBT1, intermediate relay KA1-G, and contactor 6KM1, the valve closing control contactor 6KM2 coil is energized, the main contact of contactor 6KM2 is closed, the reversing circuit of the plug drive motor 5 is connected, the plug drive motor 5 operating mechanism rotates in the opposite direction, driving the plug drive screw 10 to rotate in the opposite direction, the plug drive screw 10 thread rotation drives the automatic plug 3 to move to the left, and the automatic plug 3 moves After moving into position, the plug plate closing limit switch 7 (K2) is started, the plug plate closing limit switch 7 (K2) open point is closed, the control circuit is connected through K2, the intermediate relay KA1-G coil is energized, the intermediate relay KA1-G closed point opens, the valve closing circuit loses power, the plug plate closing limit switch 7 (K2) open point is closed, and the plug plate closing limit switch 7 (K2) closed point opens, disconnecting the fan start control circuit 7KM and losing power, the fan main circuit 7KM main contacts open, and the axial flow fan 1 stops.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electrical linkage ventilation system for a high-voltage and large-capacity frequency converter, comprising an axial flow fan (1), a shutter (2) arranged at the front side of the axial flow fan (1), and an automatic plug plate (3) arranged at the rear side of the axial flow fan (1), wherein the automatic plug plate (3) can automatically move left and right at the rear side of the axial flow fan (1), when the automatic plug plate (3) moves to the right, the rear side of the axial flow fan (1) is opened for ventilation, and when the automatic plug plate (3) moves to the left, the rear side of the axial flow fan (1) is closed and not ventilated; The automatic plug-in plate (3) is connected to the axial flow fan (1) via a connecting frame (4) fixed to the rear side of the axial flow fan (1); the connecting frame (4) further comprises a plug-in plate moving part (4-1) and a plug-in plate driving part (4-2); a plug-in plate driving motor (5) is provided on the plug-in plate driving part (4-2); the automatic plug-in plate (3) can automatically move left and right on the plug-in plate moving part (4-1) under the drive of the plug-in plate driving motor (5); The automatic plug plate (3) is provided with a plug plate opening limit switch (6) and a plug plate closing limit switch (7), and the plug plate opening limit switch (6) and the plug plate closing limit switch (7) are respectively electrically connected to the main power supply and the fan motor (8) of the axial flow fan (1). When the automatic plug plate (3) moves to the right and is in place, the plug plate opening limit switch (6) is closed, the plug plate driving motor (5) is powered off, the fan motor (8) is powered on, and the axial flow fan (1) starts to operate. When the automatic plug plate (3) moves to the left and is in place, the plug plate closing limit switch (7) is closed, the plug plate driving motor (5) is powered off, the fan motor (8) is powered off, and the axial flow fan (1) stops operating.

2. The electrical linkage ventilation system for high voltage and large capacity inverter according to claim 1 is characterized in that: The plug-in plate moving part (4-1) is provided with a plug-in plate limiting slot (9) and a plug-in plate transmission screw (10). The automatic plug-in plate (3) can move back and forth in the plug-in plate limiting slot (9) driven by the plug-in plate transmission screw (10). A screw sleeve (11) is fixedly provided at the center of the right end of the automatic plug-in plate (3). The screw sleeve (11) is connected to the plug-in plate transmission screw (10) by a thread. When the plug-in plate transmission screw (10) rotates forward, the screw sleeve (11) sleeved on the plug-in plate transmission screw (10) moves rightward on the plug-in plate transmission screw (10), thereby driving the automatic plug-in plate (3) to move rightward. When the plug-in plate transmission screw (10) rotates reversely, the screw sleeve (11) sleeved on the plug-in plate transmission screw (10) moves leftward on the plug-in plate transmission screw (10), thereby driving the automatic plug-in plate (3) to move leftward.

3. The electrical linkage ventilation system for high voltage and large capacity inverter according to claim 2 is characterized in that: The plugboard drive unit (4-2) is also provided with a reducer (12), the plugboard drive motor (5) is connected to the reducer (12), and the output shaft of the reducer (12) is fixedly connected to the plugboard drive screw (10).

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