CN219611620U - Blower unit motor starting system - Google Patents
Blower unit motor starting system Download PDFInfo
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- CN219611620U CN219611620U CN202320388433.3U CN202320388433U CN219611620U CN 219611620 U CN219611620 U CN 219611620U CN 202320388433 U CN202320388433 U CN 202320388433U CN 219611620 U CN219611620 U CN 219611620U
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- blower unit
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Abstract
The utility model provides a blower unit motor starting system which comprises a main motor power switch, a main motor, a synchronous clutch and a starting motor which are sequentially connected, wherein the main motor is also connected with a blower unit, the starting motor is connected with a power grid, the main motor power switch comprises a first switch, a first switching-off mechanism and a first switching-on mechanism, one end of the first switch is connected with the power grid, the other end of the first switch is connected with the main motor, the first switching-off mechanism and the first switching-on mechanism are both connected with the first switch so as to control the on-off of the first switch, the blower unit motor starting system further comprises a main motor rotating speed detection device, one end of the main motor rotating speed detection device is connected with the main motor, and the other end of the main motor rotating speed detection device is connected with the first switching-on mechanism so as to control the first switching-on mechanism to act according to the rotating speed of the main motor, and the main motor operates. The soft starting device of the frequency converter can overcome the defects of high price, high maintenance cost, complex operation and harmonic pollution in the prior art.
Description
Technical Field
The utility model relates to the technical field of motor starting, in particular to a motor starting system of a blower unit.
Background
The motor is a device for converting electric energy into mechanical energy, and the device for converting electric energy into mechanical energy is a device for providing power for a blower unit, and particularly in some large blower units, the required motor power is very high, so that the problems of difficult motor starting and the like occur. Therefore, the selection of the large motor starting device often considers the adoption of a variable-frequency soft starting device, and the variable-frequency starting is to lead the motor to be stably started by adjusting the frequency through the frequency converter, so that the impact of high current on the power grid at the moment of starting the motor is reduced. However, the soft-start device of the frequency converter is high in price, high in maintenance cost, complex in operation and meanwhile has harmonic pollution.
Disclosure of Invention
Therefore, the utility model provides a blower unit motor starting system which can overcome the defects of high price, high maintenance cost, complex operation and harmonic pollution of a frequency converter soft starting device in the prior art.
In order to solve the problems, the utility model provides a blower unit motor starting system, which comprises a main motor power switch, a main motor, a synchronous clutch and a starting motor which are sequentially connected, wherein the main motor is also connected with a blower unit, the starting motor is connected with a power grid, the main motor power switch comprises a first switch, a first opening mechanism and a first closing mechanism, one end of the first switch is connected with the power grid, the other end of the first switch is connected with the main motor, the first opening mechanism and the first closing mechanism are both connected with the first switch so as to control the first switch to be opened and closed, the blower unit motor starting system further comprises a main motor rotating speed detection device, one end of the main motor rotating speed detection device is connected with the main motor, the other end of the main motor rotating speed detection device is connected with the first closing mechanism so as to control the first closing mechanism to act according to the rotating speed of the main motor, and the main motor operates.
In some embodiments, the starting motor is connected to the power grid through a starting motor power switch, the starting motor power switch comprises a second switch, a second switching-off mechanism and a second switching-on mechanism, one end of the second switch is connected to the starting motor, the other end of the second switch is connected to the power grid, the second switching-off mechanism and the second switching-on mechanism are both connected with the second switch to control the on-off of the second switch, the second switching-off mechanism is connected with a control power supply through the starting motor switching-off switch, the second switching-off mechanism is further connected with the first switch to control the second switching-off mechanism to act according to a first switching-on signal, and the second switching-on mechanism is connected with the control power supply through the starting motor switching-on switch.
In some embodiments, the main motor is at the same rotational speed as the starter motor.
In some embodiments, the starter motor has a power rating less than a power rating of the main motor.
The motor starting system of the blower unit adopts the starting motor with smaller rated power to drag the main motor and the blower unit under the no-load state, and improves the rotating speed of the main motor. When the rotational speed of the main motor reaches the rated rotational speed, the main motor is restarted. The novel blower unit motor starting system has low investment cost and operation and maintenance cost, and meanwhile, no harmonic pollution exists in the starting process, and the operation is simple. By the working characteristics of the synchronous clutch, the starting motor is automatically disconnected when the blower unit normally operates, so that the starting safety is improved and the energy is saved. The signal sent by the main motor rotating speed detection device is used as a linkage signal of the input of the main motor, so that the main motor is ensured to be input at the rated rotating speed, the starting safety is further improved, and the impact on a power grid is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a blower unit motor starting system according to an embodiment of the present utility model.
The reference numerals are expressed as:
1. a power grid; 2. a main motor power switch; 21. a first switch; 22. a first brake separating mechanism; 23. a first closing mechanism; 3. starting a motor power switch; 31. a second switch; 32. a second brake separating mechanism; 33. a second closing mechanism; 4. a main motor brake-separating switch; 5. a main motor closing switch; 6. a main motor rotation speed detecting device; 7. starting a motor brake-separating switch; 8. starting a motor closing switch; 9. a main motor; 10. a blower unit; 11. a synchronizing clutch; 12. starting the motor; 13. and controlling a power supply.
Detailed Description
Referring to fig. 1 in combination, according to an embodiment of the present utility model, a blower unit motor starting system is provided, including a main motor power switch 2, a main motor 9, a synchronous clutch 11 and a starting motor 12 that are sequentially connected, where the main motor 9 is further connected to a blower unit 10, the starting motor 12 is connected to a power grid 1, the main motor power switch 2 includes a first switch 21, a first switching-off mechanism 22 and a first switching-on mechanism 23, one end of the first switch 21 is connected to the power grid 1, the other end of the first switch is connected to the main motor 9, the first switching-off mechanism 22 and the first switching-on mechanism 23 are both connected to the first switch 21 to be able to control the first switch 21 to be switched on and off, the blower unit motor starting system further includes a main motor rotation speed detecting device 6, one end of the main motor rotation speed detecting device 6 is connected to the main motor 9, the other end of the first switching-on mechanism 23 is connected to be able to control the first switching-on mechanism 23 to act according to the rotation speed of the main motor 9, and the main motor 9 is running. The utility model has low investment cost and operation and maintenance cost, and has no harmonic pollution in the starting process and simple operation. Through the working characteristics of the synchronous clutch, the air blower unit is automatically disconnected when the air blower unit normally operates, so that the starting safety is improved, and the energy is saved. The main motor rotating speed signal is used as a linkage signal of the input of the main motor, so that the main motor is ensured to be input at the rated rotating speed, the starting safety is further improved, and the impact on a power grid is reduced.
In a specific embodiment, the starting motor 12 is connected to the power grid 1 through a starting motor power switch 3, the starting motor power switch 3 includes a second switch 31, a second switching-off mechanism 32 and a second switching-on mechanism 33, one end of the second switch 31 is connected to the starting motor 12, the other end of the second switch is connected to the power grid 1, the second switching-off mechanism 32 and the second switching-on mechanism 33 are both connected to the second switch 31 to control the switching-on and switching-off of the second switch 31, the second switching-off mechanism 32 is connected to the control power source 13 through a starting motor switching-off switch 7, the second switching-off mechanism 32 is also connected to the first switch 21 to control the second switching-off mechanism 32 to act according to the switching-on signal of the first switch 21, and the second switching-on mechanism 33 is connected to the control power source 13 through a starting motor switching-on switch 8.
In a specific embodiment, the main motor 9 is at the same rotational speed as the starter motor 12.
In a specific embodiment, the power rating of the starter motor 12 is less than the power rating of the main motor 9.
In the working process, the power grid 1 supplies power to the main motor 9 through the main motor power switch 2, the control power supply 13 supplies power to the first brake separating mechanism 22 through the main motor brake separating switch 4, the first brake separating mechanism 22 acts, and the first switch 21 is separated. The control power supply 13 supplies power to the first closing mechanism 23 through the main motor closing switch 5, the first closing mechanism 23 operates, and the first switch 21 closes. The signal of the main motor rotation speed detecting means 6 is provided by the main motor 9, and when the main motor 9 rotation speed reaches the rated rotation speed, the main motor rotation speed detecting means 6 sends a closing signal to the first closing mechanism 23.
The power grid 1 supplies power to the starting motor 12 through the starting motor power switch 3, the control power supply 13 supplies power to the second brake separating mechanism 32 through the starting motor brake separating switch 7, the second brake separating mechanism 32 acts, and the second switch 31 is separated. The control power supply 13 supplies power to the second switching-on mechanism 33 by starting the motor switching-on switch 8, the second switching-on mechanism 33 acts, and the second switch 31 is switched on.
The main motor 9 is connected to the blower unit 10, and the starter motor 12 is connected to the main motor 9 via the synchronization clutch 11. When the rotation speed of the starting motor 12 is higher than that of the main motor 9, the starting motor 12 is automatically put into operation to drive the synchronous clutch 11, the main motor 9 and the blower unit 10 to rotate. When the rotation speed of the main motor 9 reaches the rated rotation speed, the main motor rotation speed detection device 6 sends a closing signal to the first closing mechanism 23, the first closing mechanism 23 acts, the first switch 21 closes, and the main motor 9 drives the load to operate. The first switch 21 sends a brake-separating signal to the second brake-separating mechanism 32, the second brake-separating mechanism 32 acts, the second switch 31 separates brake, the power grid 1 stops supplying power to the starting motor 12, and the rotating speed of the starting motor 12 is reduced. When the starter motor 12 is less than the rotational speed of the main motor 9, the starter motor 12 automatically disengages the synchronizer clutch 11.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model. The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.
Claims (4)
1. The utility model provides a blower unit motor starting system, its characterized in that, including main motor switch (2), main motor (9), synchronous clutch (11) and starter motor (12) that connect gradually, blower unit (10) are still connected to main motor (9), electric wire netting (1) are connected to starter motor (12), main motor switch (2) include first switch (21), first brake release mechanism (22) and first brake closing mechanism (23), electric wire netting (1) are connected to first switch (21) one end, and its other end is connected main motor (9), first brake release mechanism (22) and first brake closing mechanism (23) all with first switch (21) are connected in order to control first switch (21) break-make, blower unit motor starting system still includes main motor speed detection device (6), main motor speed detection device (6) one end is connected main motor (9), the other end is connected first brake closing mechanism (23) in order to be able to be according to main motor (9) rotational speed control first motor action (23).
2. Blower unit motor start-up system according to claim 1, characterized in that the start-up motor (12) is connected to the power grid (1) through a start-up motor power switch (3), the start-up motor power switch (3) comprises a second switch (31), a second switching-off mechanism (32) and a second switching-on mechanism (33), one end of the second switch (31) is connected to the start-up motor (12), the other end is connected to the power grid (1), the second switching-off mechanism (32) and the second switching-on mechanism (33) are both connected to the second switch (31) so as to be able to control the switching-on and switching-off of the second switch (31), the second switching-off mechanism (32) is connected to a control power supply (13) through a start-up motor switching-off switch (7), the second switching-off mechanism (32) is also connected to the first switch (21) so as to be able to control the action of the second switching-off mechanism (32) according to the switching-on signal of the first switch (21), and the second switching-on mechanism (33) is connected to the control power supply (13) through a start-on motor switch (8).
3. A blower unit motor start-up system according to claim 1, characterized in that the main motor (9) and the start-up motor (12) have the same rotational speed.
4. A blower unit motor start-up system according to claim 1, characterized in that the power rating of the start-up motor (12) is smaller than the power rating of the main motor (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320388433.3U CN219611620U (en) | 2023-03-06 | 2023-03-06 | Blower unit motor starting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320388433.3U CN219611620U (en) | 2023-03-06 | 2023-03-06 | Blower unit motor starting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219611620U true CN219611620U (en) | 2023-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320388433.3U Active CN219611620U (en) | 2023-03-06 | 2023-03-06 | Blower unit motor starting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219611620U (en) |
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2023
- 2023-03-06 CN CN202320388433.3U patent/CN219611620U/en active Active
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