CN211180122U - Motor fan drop detection device - Google Patents
Motor fan drop detection device Download PDFInfo
- Publication number
- CN211180122U CN211180122U CN201921991270.8U CN201921991270U CN211180122U CN 211180122 U CN211180122 U CN 211180122U CN 201921991270 U CN201921991270 U CN 201921991270U CN 211180122 U CN211180122 U CN 211180122U
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- China
- Prior art keywords
- motor
- fan
- cooler
- end cover
- motor shell
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Abstract
The utility model belongs to the technical field of motor safety, and relates to a novel device for determining the reliability of a fan in a motor on line, in particular to a device for detecting the falling off of the fan of the motor, which comprises a motor shell, a front end cover, a rear end cover, a stator, a rotor, an inner fan, an outer fan and a cooler; the motor comprises a motor shell, a cooler, an outer fan, an inner fan, a front end cover, a rear end cover, a stator and a rotor, wherein the front end cover and the rear end cover are respectively arranged at two ends of the motor shell, the stator and the rotor are sealed in the motor shell, the cooler is installed on the motor shell, the outer fan is arranged at the rear end cover of the motor, and the inner fan is arranged on one side, close to the. The device has the characteristics of small volume, light weight, simplicity in use and the like, is completely suitable for various occasions, ensures the accuracy of measurement and improves the measurement efficiency.
Description
Technical Field
The utility model belongs to the technical field of motor safety, a novel device of fan reliability in the motor is confirmed to online is related to, specifically is a motor fan detection device that drops.
Background
When the motor runs, the fan is easy to fall off along with the rotation of the motor. Most manufacturers do not have special fan operation detection devices, faults are avoided, the machine is stopped for inspection at regular intervals, or the machine is repaired only when ventilation is unavailable and winding overheating is stopped.
Disclosure of Invention
In view of the above problems, it is an object of the present invention to provide an online motor fan safety detecting device which can be applied to various occasions and improve the measuring efficiency.
In order to achieve the purpose, the invention adopts the technical scheme that: a motor fan falling-off detection device comprises a motor shell, a front end cover, a rear end cover, a stator, a rotor, an inner fan, an outer fan and a cooler; the motor comprises a motor shell, a cooler, an outer fan, an inner fan, a front end cover, a rear end cover, a stator and a rotor, wherein the front end cover and the rear end cover are respectively arranged at two ends of the motor shell, the stator and the rotor are sealed in the motor shell, the cooler is installed on the motor shell, the outer fan is arranged at the rear end cover of the motor, and the inner fan is arranged on one side, close to the.
Further, the cooler is provided with a wind pressure sensor.
Based on the technical scheme, the utility model discloses a 100KW D L100,200, 200kW SH 200's wind pressure sensor.
Further, a three-phase power line U, V, W of the motor is connected to a UVW wiring terminal of the motor junction box, and a P wiring terminal for detecting wind pressure of the wind pressure sensor is connected with a signal comparator.
Furthermore, the cooler comprises a cylinder and a heat exchange tube bundle inside the cylinder, an air inlet of the heat exchange tube bundle is communicated with the external fan, and the cooler cylinder is communicated with the motor shell.
Further, the air path of the outer fan is: outside cold air enters the heat exchange tube bundle of the cooler through the outer fan and is directly discharged into the air after passing through the heat exchange tube bundle.
Further, the air path of the inner fan is: the hot air in the motor shell enters the cooler barrel through the inner fan, exchanges heat with the heat exchange tube bundle in the cooler barrel, and then returns to the motor shell through the air outlet of the cooler barrel to circulate.
Furthermore, the air inlet of the cooler cylinder is arranged on one side close to the front end cover of the motor, and the air outlet of the cooler cylinder is arranged on one side close to the rear end cover of the motor.
Further, an air gap for air flow to pass through is arranged between the stator and the rotor.
Furthermore, the electronic elements of the motor fan falling detection device comprise a wind pressure detection circuit, a voltage detection circuit, an upper delay circuit, a signal comparison circuit and a shutdown and open circuit protection circuit; the voltage detection circuit is connected with a UVW wiring terminal of the wind pressure sensor, the wind pressure detection circuit is connected with a P wiring terminal of the wind pressure sensor, the voltage detection circuit and the wind pressure detection circuit are connected with a power-on delay circuit and a signal comparison circuit, and the voltage detection circuit is connected with a shutdown circuit-breaking protection circuit.
The device detects the motor fan through the following processes:
(1) this device carries out fault protection through detecting wind pressure and mains voltage.
(2) The three lines of the UVW motor power supply are respectively connected with a three-phase power supply line U, V, W of the motor and are used for collecting the waveform of the motor.
(3) The inner wind pressure sensor is arranged on a cooler of the motor.
(4) When the wind pressure becomes small, a low level signal is output through the comparison circuit, and if the three-phase circuit has a high level signal at the same time, the fan falls off, but the power supply is normal.
(5) The shutdown circuit-breaking protection circuit acts, and the circuit breaker cuts off the power supply of the motor.
The utility model has the advantages that: the device has the characteristics of small volume, light weight, simplicity in use and the like, is completely suitable for various occasions, ensures the accuracy of measurement and improves the measurement efficiency.
Drawings
FIG. 1 is a schematic view of the overall structure of the apparatus;
FIG. 2 is a schematic diagram of electronic component connection;
FIG. 3 is a schematic circuit diagram of the present apparatus;
in the figure: 1. inner fan, 2, outer fan, 3, cooler, 4, wind pressure sensor, 5, stator, rotor air gap.
Detailed Description
In order to make the structure and function of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solution in the embodiments of the present invention.
Referring to fig. 1-3, a motor fan drop detection device includes a motor casing, a front end cover, a rear end cover, a stator, a rotor, an inner fan 1, an outer fan 2, and a cooler 3; the two ends of the motor shell are respectively provided with a front end cover and a rear end cover, the stator and the rotor are sealed in the motor shell, the cooler 3 is installed on the motor shell, the outer fan 2 is arranged at the rear end cover of the motor, and the inner fan 1 is arranged on one side, close to the front end cover, in the motor shell.
Further, the cooler 3 is mounted with a wind pressure sensor 4.
Further, a three-phase power supply line U, V, W of the motor is connected to a UVW terminal of the wind pressure sensor, and a P terminal of the wind pressure sensor for detecting wind pressure is connected to the cooler.
Furthermore, the cooler comprises a cylinder and a heat exchange tube bundle inside the cylinder, an air inlet of the heat exchange tube bundle is communicated with the external fan, and the cooler cylinder is communicated with the motor shell.
Further, the air path of the outer fan is: outside cold air enters the heat exchange tube bundle of the cooler through the outer fan and is directly discharged into the air after passing through the heat exchange tube bundle.
Further, the air path of the inner fan is: the hot air in the motor shell enters the cooler barrel through the inner fan, exchanges heat with the heat exchange tube bundle in the cooler barrel, and then returns to the motor shell through the air outlet of the cooler barrel to circulate.
Furthermore, the air inlet of the cooler cylinder is arranged on one side close to the front end cover of the motor, and the air outlet of the cooler cylinder is arranged on one side close to the rear end cover of the motor.
Further, an air gap 5 for air flow is provided between the stator and the rotor.
Furthermore, the electronic elements of the motor fan falling detection device comprise a wind pressure detection circuit, a voltage detection circuit, an upper delay circuit, a signal comparison circuit and a shutdown and open circuit protection circuit; the voltage detection circuit is connected with a UVW wiring terminal of the wind pressure sensor, the wind pressure detection circuit is connected with a P wiring terminal of the wind pressure sensor, the voltage detection circuit and the wind pressure detection circuit are connected with a power-on delay circuit and a signal comparison circuit, and the voltage detection circuit is connected with a shutdown circuit-breaking protection circuit.
The utility model discloses an action principle as follows:
(1) and a power supply is connected, a power line of the UVW motor is connected into a voltage detection circuit, and the delay circuit compares signals after the motor is ensured to stably operate at the initial stage of the operation of the motor.
(2) And the wind pressure signal is accessed into the detection circuit.
(3) When the wind pressure signal is lower than the set threshold value and the power supply signal is normal, the machine is stopped for protection.
The above list is only the preferred embodiment of the present invention. Obviously, the present invention is not limited to the above embodiments, and many modifications are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the invention should be considered as within the scope of the invention.
Claims (8)
1. The utility model provides a motor fan detection device that drops which characterized in that: the motor comprises a motor shell, a front end cover, a rear end cover, a stator, a rotor, an inner fan, an outer fan and a cooler; the motor comprises a motor shell, a cooler, an outer fan, an inner fan and a motor shell, wherein the motor shell is provided with a front end cover and a rear end cover at two ends respectively, a stator and a rotor are sealed in the motor shell, the cooler is installed on the motor shell, the outer fan is arranged at the rear end cover of the motor, and the inner fan is arranged on one side, close to the front end cover, in the motor shell.
2. The motor fan drop detection device of claim 1, wherein: the cooler is provided with a wind pressure sensor.
3. The motor fan drop detection device of claim 2, wherein: the motor three-phase power cord U, V, W is connected to the UVW binding post of wind pressure sensor, and the P binding post that the wind pressure sensor is used for detecting the wind pressure is connected to the cooler.
4. The motor fan drop detection device of claim 3, wherein: the cooler comprises a cylinder and a heat exchange tube bundle inside the cylinder, an air inlet of the heat exchange tube bundle is communicated with the external fan, and the cylinder of the cooler is communicated with the motor shell.
5. The device according to claim 4, wherein the fan-out detecting device comprises: the wind path of the outer fan is as follows: outside cold air enters the heat exchange tube bundle of the cooler through the outer fan and is directly discharged into the air after passing through the heat exchange tube bundle.
6. The motor fan drop detection device according to claim 3 or 4, wherein: the wind path of the inner fan is as follows: the hot air in the motor shell enters the cooler barrel through the inner fan, exchanges heat with the heat exchange tube bundle in the cooler barrel, and then returns to the motor shell through the air outlet of the cooler barrel to circulate.
7. The device for detecting the drop of a motor fan according to claim 6, wherein: the air inlet of the cooler cylinder is arranged on one side close to the front end cover of the motor, and the air outlet of the cooler cylinder is arranged on one side close to the rear end cover of the motor.
8. The device for detecting the drop of a motor fan according to claim 6, wherein: an air gap for air flow to pass through is arranged between the stator and the rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921991270.8U CN211180122U (en) | 2019-11-18 | 2019-11-18 | Motor fan drop detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921991270.8U CN211180122U (en) | 2019-11-18 | 2019-11-18 | Motor fan drop detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211180122U true CN211180122U (en) | 2020-08-04 |
Family
ID=71799974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921991270.8U Active CN211180122U (en) | 2019-11-18 | 2019-11-18 | Motor fan drop detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211180122U (en) |
-
2019
- 2019-11-18 CN CN201921991270.8U patent/CN211180122U/en active Active
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