CN216216620U - Heating control circuit of motor space heater and motor control system - Google Patents

Heating control circuit of motor space heater and motor control system Download PDF

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Publication number
CN216216620U
CN216216620U CN202121487872.7U CN202121487872U CN216216620U CN 216216620 U CN216216620 U CN 216216620U CN 202121487872 U CN202121487872 U CN 202121487872U CN 216216620 U CN216216620 U CN 216216620U
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space heater
control circuit
motor
alternating current
control module
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孙志春
李志光
程胜武
张振梅
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Tianjin Bohua Engineering Co ltd
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Tianjin Bohua Engineering Co ltd
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Abstract

The embodiment of the utility model provides a heating control circuit of a motor space heater and a motor control system, and solves the technical problems that in the prior art, when a high-voltage motor is stopped, the space heater is automatically started, chain cables are added, and field operation and maintenance are inconvenient. The utility model provides a heating control circuit of a motor space heater, which comprises: the third end of the control module is connected with the medium voltage cabinet control circuit; and a space heater; the control module is used for controlling whether the power supply supplies power to the space heater or not. The control circuit for controlling the space heater and the medium-voltage cabinet control circuit are placed in the same medium-voltage cabinet, so that the laying of chain cables from the medium-voltage cabinet to the low-voltage cabinet is reduced, the number of loops of the low-voltage cabinet is reduced, when the high-voltage motor is stopped, the space heater is automatically started, and the field operation and maintenance are facilitated.

Description

Heating control circuit of motor space heater and motor control system
Technical Field
The utility model relates to the technical field of motors, in particular to a heating control circuit of a motor space heater and a motor control system.
Background
Enterprises are provided with a large number of motors, the voltage level is high, the single machine power is high, and the equipment value is high. When the motor is in the rest state, the motor itself does not generate heat, and dew condensation may occur inside the motor. Therefore, a technique is known in which a space heater is provided inside a rotating electric machine to prevent dew condensation.
However, in the prior art, a low-voltage loop is generally independently made to be interlocked with the running state of a high-voltage motor, when the high-voltage motor is stopped, a space heater is automatically started, an interlocking cable is added, and field operation and maintenance are inconvenient.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the present invention provides a heating control circuit of a motor space heater and a motor control system, which solve the technical problems in the prior art that when a high-voltage motor is stopped, the space heater is automatically started, chain cables are added, and field operation and maintenance are inconvenient.
For the purpose of making the objects, technical means and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
According to one aspect of the utility model, there is provided a heating control circuit for a motor space heater, comprising: a power supply comprising a first output and a second output; a first end of the control module is connected with the first output end, a second end of the control module is connected with the second output end, and a third end of the control module is connected with the medium voltage cabinet control circuit; the first end and the second end of the space heater are respectively connected with the first end and the second end of the control module; the control module is used for controlling whether the power supply supplies power to the space heater or not.
In an embodiment of the present invention, the control module includes: the first end of the first alternating current contactor is connected with the second output end; the second end of the first alternating current contactor is connected with the first end of the circuit breaker auxiliary contact, the first end of the short-circuit device auxiliary contact is connected with the first output end, and the contact end of the circuit breaker auxiliary contact is connected with the medium voltage cabinet control circuit; wherein the contact end of the disconnection auxiliary device contact is closed, and the control module controls the power supply to supply power to the space heater.
In an embodiment of the present invention, the heating control circuit of the motor space heater further includes: a second ac contactor having a first end connected to a first end of the circuit breaker auxiliary contact; and the first end of the third alternating current contactor is connected with the second end of the second alternating current contactor, and the second end of the third alternating current contactor is connected with the second end of the first alternating current contactor.
In an embodiment of the present invention, the heating control circuit of the motor space heater further includes: a first automatic switch, a first end of the first automatic switch is connected with the first output end, and a second end of the first automatic switch is connected with a first end of the breaker auxiliary contact; and a second automatic switch, wherein a first end of the second automatic switch is connected with the second output end, and a second end of the second automatic switch is connected with a second end of the auxiliary contact of the circuit breaker.
And end connection.
As a second aspect of the present invention, the present invention provides a motor control system comprising: the heating control circuit of the motor space heater is described above.
The application provides a pair of motor space heater's heating control circuit includes: a power supply comprising a first output and a second output; a first end of the control module is connected with the first output end, a second end of the control module is connected with the second output end, and a third end of the control module is connected with the medium voltage cabinet control circuit; the first end and the second end of the space heater are respectively connected with the first end and the second end of the control module; the control module is used for controlling whether the power supply supplies power to the space heater or not. The control circuit for controlling the space heater and the medium-voltage cabinet control circuit are placed in the same medium-voltage cabinet, so that the laying of chain cables from the medium-voltage cabinet to the low-voltage cabinet is reduced, the number of loops of the low-voltage cabinet is reduced, when the high-voltage motor is stopped, the space heater is automatically started, and the field operation and maintenance are facilitated.
Drawings
Fig. 1 is a circuit diagram of a heating control circuit of a motor space heater according to an embodiment of the present invention;
FIG. 2 is a circuit diagram of a heating control circuit for a motor space heater according to another embodiment of the present invention;
FIG. 3 is a circuit diagram of a heating control circuit for a motor space heater according to another embodiment of the present invention;
fig. 4 is a circuit diagram of a heating control circuit of a motor space heater according to another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a circuit diagram of a heating control circuit of a motor space heater according to an embodiment of the present invention; as shown in fig. 1, the heating control circuit of the motor space heater includes: a power supply 100, the power supply 100 including a first output terminal Q1 and a second output terminal Q2; a first end of the control module 200 is connected with a first output end, a second end of the control module 200 is connected with a second output end, and a third end of the control module 200 is connected with a medium voltage cabinet control circuit; and a space heater 300, a first end and a second end of the space heater 300 being connected with a first end and a second end of the control module 200, respectively; the control module 200 is used to control whether the power supply 100 supplies power to the space heater 300. The control circuit for controlling the space heater and the control circuit of the medium-voltage cabinet are arranged in the same medium-voltage cabinet, so that the laying of chain cables from the medium-voltage cabinet to the low-voltage cabinet is reduced, the number of loops of the low-voltage cabinet is reduced, and when the high-voltage motor is stopped, the control module 200 controls the power supply 100 to supply power to the space heater 300, so that the space heater is automatically started, and the field operation and maintenance are facilitated.
In an embodiment of the present invention, fig. 2 is a circuit diagram of a heating control circuit of a motor space heater according to another embodiment of the present invention; as shown in fig. 2, the control module 200 includes: the first end of the first alternating current contactor KM1 is connected with a second output end Q2; the second end of the first alternating current contactor KM1 is connected with the first end of the breaker auxiliary contact QF, the first end of the short-circuit device auxiliary contact QF is connected with the first output end Q1, and the contact end of the breaker auxiliary contact QF is connected with the medium voltage cabinet control circuit; wherein the contact end of the disconnection assistant contact QF is closed, and the control module 200 controls the power supply 100 to supply power to the space heater 300. The circuit breaker auxiliary contact QF can be an element in the medium voltage control circuit. The utility model adopts the circuit breaker auxiliary contact QF and the first alternating current contactor KM1 in the medium-voltage control circuit to control the power supply 100 to supply power for the space heater 300, fully utilizes elements in the medium-voltage control circuit and has simple structure.
In an embodiment of the present invention, fig. 3 is a circuit diagram of a heating control circuit of a motor space heater according to another embodiment of the present invention; as shown in fig. 3, the heating control circuit of the motor space heater further includes: a second ac contactor KM2 and a third ac contactor KM 3. The first end of the second alternating current contactor KM2 is connected with the first end of the breaker auxiliary contact QF, the first end of the third alternating current contactor KM3 is connected with the second end of the second alternating current contactor KM2, and the second end of the third alternating current contactor KM3 is connected with the second end of the first alternating current contactor KM 1.
The ac contactor, through its auxiliary contacts, puts the coil in the technetium electrical or de-energized state. When the high-voltage motor is stopped, the auxiliary contact QF of the circuit breaker is closed, then the second alternating current contactor KM2 and the third alternating current contactor KM3 are both closed, and the power supply 100 supplies power to the space heater 300, so that the space heater is automatically started, and the field operation and maintenance are facilitated.
In an embodiment of the present invention, fig. 4 is a circuit diagram of a heating control circuit of a motor space heater according to another embodiment of the present invention; as shown in fig. 4, the heating control circuit of the motor space heater further includes: a first automatic switch ZK1, wherein a first end of the first automatic switch ZK1 is connected with a first output end Q1, and a second end of the first automatic switch ZK1 is connected with a first end of the breaker auxiliary contact QF; and a second automatic switch ZK2, a first terminal of the second automatic switch ZK2 being connected with the second output terminal Q2, a second terminal of the second automatic switch ZK2 being connected with a second terminal of the breaker auxiliary contact QF.When in useWhen the high-voltage motor is stopped, the auxiliary contact QF of the circuit breaker is closed, then the second alternating current contactor KM2 and the third alternating current contactor KM3 are both closed, the first automatic switch ZK1 and the second automatic switch ZK2 are both closed, and the power supply 100 supplies power for the space heater 300, so that the space heater is automatically started, and field operation and maintenance are facilitated.
In an embodiment of the present invention, as shown in fig. 4, a heating control circuit of a motor space heater includes: a power supply, wherein the power supply comprises an AC power supply with a rated voltage of 220VAnd the first end of the power supply is a live wire, and the second end of the power supply is a zero wire. A first recloser ZK1, a second recloser ZK2, a first ac contactor KM1, a second ac contactor KM2, a third ac contactor KM3 and a breaker auxiliary contact QF. The first end of the first automatic switch ZK1 is connected with a live wire L, the second end of the first automatic switch ZK1 is connected with the first end of an auxiliary contact QF of a circuit breaker, the first end of the second automatic switch ZK2 is connected with a zero line N, the second end of the second automatic switch ZK2 is connected with the second end of the auxiliary contact QF of the circuit breaker, the first end of the second alternating current contactor KM2 is connected with the first end of the auxiliary contact QF of the circuit breaker, the first end of the third alternating current contactor KM3 is connected with the second end of the second alternating current contactor KM2, and the second end of the third alternating current contactor KM3 is connected with the second end of the first alternating current contactor KM 1; the first end of the first alternating current contactor KM1 is connected with a zero line N; the second end of the first alternating current contactor KM1 is connected with the first end of a breaker auxiliary contact QF, the first end of a short-circuit device auxiliary contact QF is connected with a live wire L, and the contact end of the breaker auxiliary contact QF is connected with a medium-voltage cabinet control circuit.When in useWhen the high-voltage motor is stopped, the auxiliary contact QF of the circuit breaker is closed, then the second alternating current contactor KM2 and the third alternating current contactor KM3 are both closed, the first automatic switch ZK1 and the second automatic switch ZK2 are both closed, and the power supply 100 supplies power for the space heater 300, so that the space heater is automatically started, and field operation and maintenance are facilitated.
As a second aspect of the present invention, the present invention provides a motor control system comprising: the heating control circuit of the motor space heater is provided.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the utility model, so that any modifications, equivalents and the like included in the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (5)

1. A heating control circuit for a motor space heater, comprising:
a power supply comprising a first output and a second output;
a first end of the control module is connected with the first output end, a second end of the control module is connected with the second output end, and a third end of the control module is connected with the medium voltage cabinet control circuit; and
a space heater, a first end and a second end of the space heater being connected with a first end and a second end of the control module, respectively;
the control module is used for controlling whether the power supply supplies power to the space heater or not.
2. The electromechanical space heater heating control circuit of claim 1, wherein the control module comprises:
the first end of the first alternating current contactor is connected with the second output end; and
the second end of the first alternating current contactor is connected with the first end of the circuit breaker auxiliary contact, the first end of the circuit breaker auxiliary contact is connected with the first output end, and the contact end of the circuit breaker auxiliary contact is connected with the medium voltage cabinet control circuit;
the contact end of the auxiliary contact of the circuit breaker is closed, and the control module controls the power supply to supply power to the space heater.
3. The electromechanical space heater heating control circuit of claim 2, further comprising:
a second ac contactor having a first end connected to a first end of the circuit breaker auxiliary contact; and
and the first end of the third alternating current contactor is connected with the second end of the second alternating current contactor, and the second end of the third alternating current contactor is connected with the second end of the first alternating current contactor.
4. The electromechanical space heater heating control circuit of claim 2, further comprising:
a first automatic switch, a first end of the first automatic switch is connected with the first output end, and a second end of the first automatic switch is connected with a first end of the breaker auxiliary contact; and
and a first end of the second automatic switch is connected with the second output end, and a second end of the second automatic switch is connected with a second end of the auxiliary contact of the circuit breaker.
5. A motor control system, comprising:
a heating control circuit for an electromechanical space heater as claimed in any one of claims 1 to 4.
CN202121487872.7U 2021-07-01 2021-07-01 Heating control circuit of motor space heater and motor control system Active CN216216620U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121487872.7U CN216216620U (en) 2021-07-01 2021-07-01 Heating control circuit of motor space heater and motor control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121487872.7U CN216216620U (en) 2021-07-01 2021-07-01 Heating control circuit of motor space heater and motor control system

Publications (1)

Publication Number Publication Date
CN216216620U true CN216216620U (en) 2022-04-05

Family

ID=80894386

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121487872.7U Active CN216216620U (en) 2021-07-01 2021-07-01 Heating control circuit of motor space heater and motor control system

Country Status (1)

Country Link
CN (1) CN216216620U (en)

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