CN216290739U - Energy-saving heat dissipation controller of high-voltage variable frequency motor - Google Patents
Energy-saving heat dissipation controller of high-voltage variable frequency motor Download PDFInfo
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- CN216290739U CN216290739U CN202122941604.4U CN202122941604U CN216290739U CN 216290739 U CN216290739 U CN 216290739U CN 202122941604 U CN202122941604 U CN 202122941604U CN 216290739 U CN216290739 U CN 216290739U
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Abstract
The utility model relates to an energy-saving heat dissipation controller of a high-voltage variable frequency motor, belonging to the technical field of energy-saving heat dissipation controllers of high-voltage variable frequency motors; the technical problem to be solved is as follows: the improvement of the hardware structure of the energy-saving heat dissipation controller of the high-voltage variable frequency motor is provided; the technical scheme for solving the technical problems is as follows: the system comprises 5 air circuit breakers (QF, QF1-QF 4), 3 alternating current contactors (KM 1-KM 3), 3 overheating relays (FR 1-FR 3), 6 operating buttons (SB 1-SB 6), 3 indicator lamps (RD 1-RD 3), 1 transfer switch SA, 1 temperature controller WKY and 2 intermediate relays (K1, K2), and comprises an electric main loop and a manual/automatic control loop, wherein an external cooling fan power supply terminal and a high-voltage motor stator temperature and bearing temperature signal terminal are configured; the utility model is applied to the high-voltage variable-frequency motor.
Description
Technical Field
The utility model discloses an energy-saving heat dissipation controller of a high-voltage variable frequency motor, and belongs to the technical field of energy-saving heat dissipation controllers of high-voltage variable frequency motors.
Background
In recent years, industrial production is rapidly advanced, various large-scale equipment is matched with a high-power motor with hundreds of kilowatts or even thousands of kilowatts, and in order to save energy, reduce cost and improve efficiency, enterprises select variable frequency motors, and particularly in steel enterprises, the large-scale equipment is more. Before, no matter how the environmental temperature changes, no matter how large the motor load is, as long as the high-voltage variable frequency motor is started, three (even 4 or more) cooling fans matched with the high-voltage variable frequency motor are started, even in the northern outdoor environment of minus 20 degrees in nine cold days, the high-voltage variable frequency motor cannot be stopped, namely, if the cooling fans are manually stopped, once the temperature of a stator of the high-voltage variable frequency motor or the temperature of front and rear bearings is high, the cooling fans cannot be automatically started to cool, and the high-voltage variable frequency motor is burnt. However, this current practice is energy intensive.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the utility model aims to solve the technical problems that: the improvement of the hardware structure of the energy-saving heat dissipation controller of the high-voltage variable frequency motor is provided.
In order to solve the technical problems, the utility model adopts the technical scheme that: an energy-saving heat dissipation controller of a high-voltage variable frequency motor comprises a box body, wherein a control circuit board is arranged in the box body, a control panel is arranged on the front surface of the box body, a selection switch SA, a button SB and an indicator lamp RD are arranged on the control panel, an electric main loop and a manual/automatic control loop are integrated on the control circuit board, the electric main loop comprises a main circuit breaker QF and circuit breakers of at least two cooling fans, and the electric main loops of the cooling fans are respectively connected with an alternating current contactor and an overheating relay;
the manual/automatic control loop is provided with a main breaker QF4, the control loops of a plurality of cooling fans are arranged in parallel, wherein the first cooling fan control loop is arranged in a single-path mode, the other cooling fan control loops are manually and automatically controlled through a selector switch SA, and the automatic control loop controls the cooling fans through an intermediate relay;
and the manual/automatic control loop is also provided with a temperature controller WKY, and an output signal of the temperature controller is connected with a coil of the intermediate relay in series.
The electric main loop specifically comprises a main circuit breaker QF and three circuit breakers QF1-QF3 for respectively controlling cooling fans, wherein the electric main loops of the three cooling fans are respectively connected with an alternating current contactor KM1-KM3 and an overheating relay FR1-FR 3;
the manual/automatic control loop is provided with a main circuit breaker QF4, control loops of three cooling fans are arranged in parallel, wherein the first cooling fan control loop is arranged in a single-path mode, the second cooling fan control loop and the third cooling fan control loop are manually and automatically controlled through a selector switch SA, the second cooling fan is controlled through an intermediate relay K1 on the automatic control loop, and the third cooling fan is controlled through an intermediate relay K2 on the automatic control loop;
the manual/automatic control loop is also provided with a temperature controller WKY, a first output signal AL1 of the temperature controller is connected with a coil of the intermediate relay K1 in series, and a second output signal AL2 of the temperature controller is connected with a coil of the intermediate relay K2 in series.
Temperature sensing probes of the temperature controller WKY are respectively arranged at a stator and a bearing of the high-voltage variable-frequency motor and used for measuring the temperature of electrons and the bearing of the high-voltage variable-frequency motor.
The button SB specifically is provided with six, be SB1-SB6 respectively, wherein SB1, SB2 is the separating brake button and the closing button of first cooling extension respectively, SB3, SB4 is the separating brake button and the closing button of second cooling extension respectively, SB5, SB6 is the separating brake button and the closing button of third cooling extension respectively, the normally open contact of the parallelly connected ac contactor KM1 of SB2, the normally open contact of the parallelly connected ac contactor KM2 of SB4, the normally open contact of the parallelly connected ac contactor KM3 of SB 6.
The number of the indicator lights RD is specifically three, and the indicator lights RD1-RD3 are respectively used for indicating the states of the first cooling fan, the second cooling fan and the third cooling fan, wherein the RD1 is connected in series with the normally open contact of the alternating current contactor KM1, the RD2 is connected in series with the normally open contact of the alternating current contactor KM2, and the RD3 is connected in series with the normally open contact of the alternating current contactor KM 3.
The circuit structure of the electric main loop is as follows:
the electric main loop comprises a main breaker QF connected to a power supply inlet wire end, the outlet wire end of the main breaker QF is connected with a breaker QF1, a breaker QF2 and a breaker QF3 in parallel, wherein the breaker QF1 is connected with an alternating current contactor KM1 in series and is connected with a motor MD1 of a first cooling fan after an overheating relay FR1, the breaker QF2 is connected with an alternating current contactor KM2 in series and is connected with a motor MD2 of a second cooling fan after an overheating relay FR2 in series, and the breaker QF3 is connected with an alternating current contactor KM3 in series and is connected with a motor MD3 of a third cooling fan after an overheating relay FR3 in series.
Compared with the prior art, the utility model has the beneficial effects that: the energy-saving heat dissipation controller of the high-voltage variable frequency motor adopts manual/automatic control, only one cooling fan is forced to be started temporarily in autumn and winter, and the other fans are automatically controlled to be started and stopped along with the temperature of the stator and the bearing of the high-voltage variable frequency motor, so that the power is saved for enterprises, and the energy is saved for low carbon emission reduction.
Drawings
The utility model is further described below with reference to the accompanying drawings:
FIG. 1 is a circuit diagram of the electrical main circuit of the controller of the present invention;
FIG. 2 is a circuit diagram of the manual/automatic control loop of the controller of the present invention.
Detailed Description
As shown in fig. 1 and 2, the energy-saving heat dissipation controller for a high-voltage variable frequency motor of the present invention comprises a box body, wherein a control circuit board is arranged inside the box body, a control panel is arranged on the front surface of the box body, a selection switch SA, a button SB and an indicator lamp RD are arranged on the control panel, an electric main circuit and a manual/automatic control circuit are integrated on the control circuit board, the electric main circuit comprises a main circuit breaker QF and circuit breakers of at least two cooling fans, and the electric main circuits of the plurality of cooling fans are respectively connected with an ac contactor and an overheat relay;
the manual/automatic control loop is provided with a main breaker QF4, the control loops of a plurality of cooling fans are arranged in parallel, wherein the first cooling fan control loop is arranged in a single-path mode, the other cooling fan control loops are manually and automatically controlled through a selector switch SA, and the automatic control loop controls the cooling fans through an intermediate relay;
and the manual/automatic control loop is also provided with a temperature controller WKY, and an output signal of the temperature controller is connected with a coil of the intermediate relay in series.
The electric main loop specifically comprises a main circuit breaker QF and three circuit breakers QF1-QF3 for respectively controlling cooling fans, wherein the electric main loops of the three cooling fans are respectively connected with an alternating current contactor KM1-KM3 and an overheating relay FR1-FR 3;
the manual/automatic control loop is provided with a main circuit breaker QF4, control loops of three cooling fans are arranged in parallel, wherein the first cooling fan control loop is arranged in a single-path mode, the second cooling fan control loop and the third cooling fan control loop are manually and automatically controlled through a selector switch SA, the second cooling fan is controlled through an intermediate relay K1 on the automatic control loop, and the third cooling fan is controlled through an intermediate relay K2 on the automatic control loop;
the manual/automatic control loop is also provided with a temperature controller WKY, a first output signal AL1 of the temperature controller is connected with a coil of the intermediate relay K1 in series, and a second output signal AL2 of the temperature controller is connected with a coil of the intermediate relay K2 in series.
Temperature sensing probes of the temperature controller WKY are respectively arranged at a stator and a bearing of the high-voltage variable-frequency motor and used for measuring the temperature of electrons and the bearing of the high-voltage variable-frequency motor.
The button SB specifically is provided with six, be SB1-SB6 respectively, wherein SB1, SB2 is the separating brake button and the closing button of first cooling extension respectively, SB3, SB4 is the separating brake button and the closing button of second cooling extension respectively, SB5, SB6 is the separating brake button and the closing button of third cooling extension respectively, the normally open contact of the parallelly connected ac contactor KM1 of SB2, the normally open contact of the parallelly connected ac contactor KM2 of SB4, the normally open contact of the parallelly connected ac contactor KM3 of SB 6.
The number of the indicator lights RD is specifically three, and the indicator lights RD1-RD3 are respectively used for indicating the states of the first cooling fan, the second cooling fan and the third cooling fan, wherein the RD1 is connected in series with the normally open contact of the alternating current contactor KM1, the RD2 is connected in series with the normally open contact of the alternating current contactor KM2, and the RD3 is connected in series with the normally open contact of the alternating current contactor KM 3.
The circuit structure of the electric main loop is as follows:
the electric main loop comprises a main breaker QF connected to a power supply inlet wire end, the outlet wire end of the main breaker QF is connected with a breaker QF1, a breaker QF2 and a breaker QF3 in parallel, wherein the breaker QF1 is connected with an alternating current contactor KM1 in series and is connected with a motor MD1 of a first cooling fan after an overheating relay FR1, the breaker QF2 is connected with an alternating current contactor KM2 in series and is connected with a motor MD2 of a second cooling fan after an overheating relay FR2 in series, and the breaker QF3 is connected with an alternating current contactor KM3 in series and is connected with a motor MD3 of a third cooling fan after an overheating relay FR3 in series.
The energy-saving heat dissipation controller for the high-voltage variable-frequency motor can be provided with 2 cooling fans or 3 or 4 cooling fans according to specific scenes, and the utility model is explained in detail according to the number of the three cooling fans according to specific application of enterprises.
When three cooling fans are arranged, the three cooling fans comprise 5 air circuit breakers (QF, QF1-QF 4), 3 alternating current contactors (KM 1-KM 3), 3 overheating relays (FR 1-FR 3), 6 operating buttons (SB 1-SB 6), 3 indicator lamps (RD 1-RD 3), 1 change-over switch SA, 1 temperature controller WKY and 2 intermediate relays (K1 and K2), and the three air circuit breakers are combined to form the energy-saving heat dissipation controller for the high-voltage variable-frequency motor. The device comprises an electric main loop, a manual/automatic control loop and an external cooling fan power terminal, a high-voltage motor stator temperature and bearing temperature signal terminal. The manual/automatic switching can be realized according to the change of the environmental temperature, and the energy-saving effect is achieved under the condition of ensuring good heat dissipation of the high-voltage variable-frequency motor.
The controller of the utility model concentrates 3 original cooling fans which are independently controlled in one controller, wherein 1 of the 3 cooling fans is normally opened, and the other two cooling fans are automatically started and stopped according to the temperature of the stator and the bearing of the high-voltage variable frequency motor to dissipate heat.
The controller is arranged beside a field high-voltage variable-frequency motor, and post operators can observe the temperature of the stator and the bearing of the high-voltage variable-frequency motor through the temperature controller at any time and can also observe the running conditions of 3 cooling fans according to the panel indicator lamp at any time.
The working principle of the utility model when three cooling fans are arranged is as follows: and when the QF circuit breakers and the QF circuit breakers 1-QF circuit breakers 4 are closed, the SA selector switch is manually operated to start three cooling fans when the spring and summer season is saved (5-10 months per year). When the season comes in autumn and winter (11 months-4 months in the next year), SA is set to be automatic, the cooling fan No. 1 is not influenced by hands/automation and runs all the time, when the temperature of the stator of the high-voltage variable-frequency motor (generally 6) is higher than 80 ℃ or the temperature of the front bearing of the motor is higher than 55 ℃, the temperature controller outputs AL1 starting signals, K1 is closed, and the cooling fan No. 2 is started; when one of the stator temperatures of the high-voltage variable-frequency motor is higher than 80 ℃ or the rear bearing temperature of the motor is higher than 55 ℃, the temperature controller outputs an AL2 starting signal, K2 is closed, and the No. 3 cooling fan is started; when the temperature of the stator of the high-voltage variable frequency motor is lower than 70 ℃ and the temperature of the front bearing is lower than 50 ℃, the starting signal of the temperature controller AL1 disappears, K1 is disconnected, and the No. 2 cooling fan stops; when the temperature of the stator of the high-voltage variable frequency motor is lower than 70 ℃ and the temperature of the rear bearing is lower than 50 ℃, the starting signal of the temperature controller AL2 disappears, the K2 is disconnected, and the No. 3 cooling fan stops.
The controller integrates control, protection and energy conservation, not only ensures the safety production of enterprises, but also realizes the electricity conservation, facilitates the field observation of the motor temperature and the opening state of the cooling fan by inspection personnel at all levels, and reserves an interlocking interface with a PLC (programmable logic controller) or DCS (distributed control system) system. The temperature controller adopted by the utility model is specifically the temperature controller of the existing model, and is specifically selected according to the number of the probes required to be set, for example, the model is an OHR-G400/G400R series liquid crystal four-way PID regulator/regulation recorder, and the collected motor stator and bearing temperature is judged through the temperature controller.
According to test data records, the energy-saving heat dissipation controller of the high-voltage variable-frequency motor is manufactured, the stopping time of 2# and 3# can reach more than 100 days from 11 months to 4 months in the coming year and within 5 months every year, the rated power of a cooling fan is 5.5kW, the conservation is calculated according to 100 days, the actual operating power of each motor is 5kW, the electricity consumption can be saved by 2 machines multiplied by 5kW for 24 hours multiplied by 100 days in one year, namely 2.4 kWh, and the electricity cost is 1.2 ten thousand yuan. If a steel enterprise has 50 high-voltage variable frequency motors to install the equipment, only 3.25 ten thousand yuan of investment is needed, namely, the equipment can save at least 120 ten thousand DEG of electricity for the enterprise every year, reduce 1380 ton of carbon dioxide emission and directly save more than 60 ten thousand yuan of capital.
It should be noted that, regarding the specific structure of the present invention, the connection relationship between the modules adopted in the present invention is determined and can be realized, except for the specific description in the embodiment, the specific connection relationship can bring the corresponding technical effect, and the technical problem proposed by the present invention is solved on the premise of not depending on the execution of the corresponding software program.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. The utility model provides a high-voltage inverter motor's energy-conserving heat dissipation controller, includes the box, its characterized in that: the intelligent control cabinet is characterized in that a control circuit board is arranged in the cabinet body, a control panel is arranged on the front face of the cabinet body, a selection switch SA, a button SB and an indicator lamp RD are arranged on the control panel, an electric main circuit and a manual/automatic control circuit are integrated on the control circuit board, the electric main circuit comprises a main circuit breaker QF and circuit breakers of at least two cooling fans, and the electric main circuits of the cooling fans are respectively connected with an alternating current contactor and an overheating relay;
the manual/automatic control loop is provided with a main breaker QF4, the control loops of a plurality of cooling fans are arranged in parallel, wherein the first cooling fan control loop is arranged in a single-path mode, the other cooling fan control loops are manually and automatically controlled through a selector switch SA, and the automatic control loop controls the cooling fans through an intermediate relay;
and the manual/automatic control loop is also provided with a temperature controller WKY, and an output signal of the temperature controller is connected with a coil of the intermediate relay in series.
2. The energy-saving heat dissipation controller of the high-voltage variable frequency motor according to claim 1, characterized in that: the electric main loop specifically comprises a main circuit breaker QF and three circuit breakers QF1-QF3 for respectively controlling cooling fans, wherein the electric main loops of the three cooling fans are respectively connected with an alternating current contactor KM1-KM3 and an overheating relay FR1-FR 3;
the manual/automatic control loop is provided with a main circuit breaker QF4, control loops of three cooling fans are arranged in parallel, wherein the first cooling fan control loop is arranged in a single-path mode, the second cooling fan control loop and the third cooling fan control loop are manually and automatically controlled through a selector switch SA, the second cooling fan is controlled through an intermediate relay K1 on the automatic control loop, and the third cooling fan is controlled through an intermediate relay K2 on the automatic control loop;
the manual/automatic control loop is also provided with a temperature controller WKY, a first output signal AL1 of the temperature controller is connected with a coil of the intermediate relay K1 in series, and a second output signal AL2 of the temperature controller is connected with a coil of the intermediate relay K2 in series.
3. The energy-saving heat dissipation controller of the high-voltage variable frequency motor according to claim 1, characterized in that: temperature sensing probes of the temperature controller WKY are respectively arranged at a stator and a bearing of the high-voltage variable-frequency motor and used for measuring the temperature of electrons and the bearing of the high-voltage variable-frequency motor.
4. The energy-saving heat dissipation controller of the high-voltage variable frequency motor according to claim 2, characterized in that: the button SB specifically is provided with six, be SB1-SB6 respectively, wherein SB1, SB2 is the separating brake button and the closing button of first cooling extension respectively, SB3, SB4 is the separating brake button and the closing button of second cooling extension respectively, SB5, SB6 is the separating brake button and the closing button of third cooling extension respectively, the normally open contact of the parallelly connected ac contactor KM1 of SB2, the normally open contact of the parallelly connected ac contactor KM2 of SB4, the normally open contact of the parallelly connected ac contactor KM3 of SB 6.
5. The energy-saving heat dissipation controller of the high-voltage variable frequency motor according to claim 2, characterized in that: the number of the indicator lights RD is specifically three, and the indicator lights RD1-RD3 are respectively used for indicating the states of the first cooling fan, the second cooling fan and the third cooling fan, wherein the RD1 is connected in series with the normally open contact of the alternating current contactor KM1, the RD2 is connected in series with the normally open contact of the alternating current contactor KM2, and the RD3 is connected in series with the normally open contact of the alternating current contactor KM 3.
6. The energy-saving heat dissipation controller of the high-voltage variable frequency motor according to claim 2, characterized in that: the circuit structure of the electric main loop is as follows:
the electric main loop comprises a main breaker QF connected to a power supply inlet wire end, the outlet wire end of the main breaker QF is connected with a breaker QF1, a breaker QF2 and a breaker QF3 in parallel, wherein the breaker QF1 is connected with an alternating current contactor KM1 in series and is connected with a motor MD1 of a first cooling fan after an overheating relay FR1, the breaker QF2 is connected with an alternating current contactor KM2 in series and is connected with a motor MD2 of a second cooling fan after an overheating relay FR2 in series, and the breaker QF3 is connected with an alternating current contactor KM3 in series and is connected with a motor MD3 of a third cooling fan after an overheating relay FR3 in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122941604.4U CN216290739U (en) | 2021-11-29 | 2021-11-29 | Energy-saving heat dissipation controller of high-voltage variable frequency motor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122941604.4U CN216290739U (en) | 2021-11-29 | 2021-11-29 | Energy-saving heat dissipation controller of high-voltage variable frequency motor |
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| CN216290739U true CN216290739U (en) | 2022-04-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115815643A (en) * | 2022-11-29 | 2023-03-21 | 无锡阳光精机股份有限公司 | High-speed efficient multi-linkage main shaft equipment for intelligent manufacturing of high-end equipment |
-
2021
- 2021-11-29 CN CN202122941604.4U patent/CN216290739U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115815643A (en) * | 2022-11-29 | 2023-03-21 | 无锡阳光精机股份有限公司 | High-speed efficient multi-linkage main shaft equipment for intelligent manufacturing of high-end equipment |
| CN115815643B (en) * | 2022-11-29 | 2023-11-10 | 无锡阳光精机股份有限公司 | High-speed high-efficiency multi-linkage main shaft equipment for intelligent manufacturing of high-end equipment |
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