CN212968738U - Temperature control device for variable distribution low-voltage capacitor box - Google Patents
Temperature control device for variable distribution low-voltage capacitor box Download PDFInfo
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- CN212968738U CN212968738U CN202021136281.0U CN202021136281U CN212968738U CN 212968738 U CN212968738 U CN 212968738U CN 202021136281 U CN202021136281 U CN 202021136281U CN 212968738 U CN212968738 U CN 212968738U
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- circuit breaker
- temperature control
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Abstract
The utility model belongs to the technical field of temperature control device, concretely relates to become distribution low pressure electric capacity cabinet temperature control device, the other end of a circuit breaker, second circuit breaker passes through the wire and is connected with two ac contactor respectively, two ac contactor all connects on thermorelay, thermorelay is connected with the ventilation blower, the other end of first circuit breaker passes through the wire and is connected with the temperature control appearance, the temperature control appearance passes through the wire and is connected with thermorelay's normally closed contact, thermorelay's normally closed contact is connected with ac contactor's coil, ac contactor's coil passes through the wire and is connected with the other end of second circuit breaker, be provided with the alarm output contact on the temperature control appearance. The utility model discloses a real-time automatic monitoring temperature, automatic start fan carries out forced ventilation cooling to switch and electrical apparatus in the cabinet when the rising of switch temperature surpasss the allowable temperature. The utility model is used for to the temperature control of transformation distribution low pressure electric capacity cabinet.
Description
Technical Field
The utility model belongs to the technical field of temperature control device, concretely relates to become distribution low pressure electric capacity cabinet temperature control device.
Background
When the transformation and distribution low-voltage capacitor box operates, the load knife switch generates switch heating due to long-term operation, poor contact at the joint, dust and other adverse effects, so that the switch is easy to break down and the electric appliance catches fire. The temperature control of the existing power transformation and distribution low-voltage capacitor cabinet is that a temperature measuring gun is manually used for measuring the temperature of a knife switch, a ventilator is manually started for forced ventilation to reduce the temperature of the knife switch, and the ventilator is closed after the temperature is reduced. The method not only increases labor and low efficiency, but also is easy to cause the condition that the service life of a switch and other electrical appliance elements is shortened and even fire is caused due to overhigh temperature, and the safe production and use of the capacitor cabinet and the whole low-voltage distribution system are seriously influenced.
SUMMERY OF THE UTILITY MODEL
Need the technical problem of artifical observation temperature, manually operation control ventilation blower to above-mentioned transformation distribution low pressure electric capacity cabinet, the utility model provides an efficient, degree of automation is high, convenient operation's transformation distribution low pressure electric capacity cabinet temperature control device.
In order to solve the technical problem, the utility model discloses a technical scheme be:
a temperature control device of a transformation and distribution low-voltage capacitor cabinet comprises a first circuit breaker, a second circuit breaker, an alternating current contactor, a thermal relay, a ventilator and a temperature controller, wherein one end of the first circuit breaker is connected to a live wire, one end of the second circuit breaker is connected to a zero wire, the other ends of the first circuit breaker and the second circuit breaker are respectively connected with two alternating current contactors through wires, two alternating current contactors are connected to the thermal relay, the thermal relay is connected with the ventilator, the other end of the first circuit breaker is connected with the temperature controller through a wire, the temperature controller is connected with a normally open contact of the thermal relay through a wire, the normally open contact of the thermal relay is connected with the other end of the second circuit breaker through a first buzzer, the temperature controller is connected with the normally closed contact of the thermal relay through a wire, and the normally closed contact of the thermal relay is connected with a coil of the alternating current contactor, the utility model discloses a temperature control instrument, including first circuit breaker, alternating current contactor, temperature controller, wire and second circuit breaker, alternating current contactor's coil passes through the wire and is connected with the other end of second circuit breaker, be provided with the alarm output contact on the temperature controller, the one end of alarm output contact is passed through the wire and is connected with thermorelay's normally open contact, the other end of alarm output contact passes through the wire and is connected with second bee calling organ, second bee calling organ passes through the wire and is connected with the other end of second.
The ventilator adopts a 220V axial flow ventilator.
The temperature control instrument is connected with a temperature probe, and the temperature probe adopts an infrared temperature probe.
Compared with the prior art, the utility model, the beneficial effect who has is:
the utility model realizes real-time automatic temperature monitoring, when the switch temperature rises and exceeds the allowable temperature, the fan is automatically started to carry out forced ventilation and cooling on the switch and the electric appliance in the cabinet, and accidents caused by overtemperature of the electric appliance due to manual operation and negligence are avoided; the utility model discloses still set up overtemperature alarm function, meet the rising of temperature in the cabinet when the ventilation blower trouble can not start, bee calling organ can automatic alarm when reaching the setting value, bee calling organ also can automatic alarm when the increase of load surpasss rated current in the ventilation blower operation in addition, suggestion distribution personnel on duty in time discover the problem and obtain in time handling to electric capacity cabinet equipment life has been prolonged, the accident has been avoided, the manpower has been practiced thrift, the cost is reduced, the safety and usability of equipment has been improved.
Drawings
FIG. 1 is a schematic diagram of the circuit connection of the present invention;
wherein: 1 is first circuit breaker, 2 is the second circuit breaker, 3 is ac contactor, 4 is thermal relay, 5 is the ventilation blower, 6 is the temperature control appearance, 7 is normally open contact, 8 is first bee calling organ, 9 is normally closed contact, 10 is the coil, 11 is the alarm output contact, 12 is the second bee calling organ, 13 is temperature probe, and L is the live wire, and N is the zero line.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
A temperature control device of a transformation and distribution low-voltage capacitor cabinet is shown in figure 1 and comprises a first circuit breaker 1, a second circuit breaker 2, alternating current contactors 3, a thermal relay 4, a ventilator 5 and a temperature control instrument 6, wherein one end of the first circuit breaker 1 is connected to a live wire L, one end of the second circuit breaker 2 is connected to a zero wire N, the other ends of the first circuit breaker 1 and the second circuit breaker 2 are respectively connected with the two alternating current contactors 3 through leads, the two alternating current contactors 3 are both connected to the thermal relay 4, the thermal relay 4 is connected with the ventilator 5, the other end of the first circuit breaker 1 is connected with the temperature control instrument 6 through a lead, the temperature control instrument 6 is connected with a normally open contact 7 of the thermal relay 4 through a lead, the normally open contact 7 of the thermal relay 4 is connected with the other end of the second circuit breaker 2 through a first buzzer 8, the temperature control instrument 6 is connected with a normally closed contact 9 of the thermal, normally closed contact 9 of thermorelay 4 is connected with coil 10 of ac contactor 3, the coil 10 of ac contactor 3 passes through the wire and is connected with the other end of second circuit breaker 2, be provided with alarm output contact 11 on the temperature controller 6, alarm output contact 11's one end is passed through the wire and is connected with thermorelay 4's normally open contact 7, alarm output contact 11's the other end passes through the wire and is connected with second bee calling organ 12, second bee calling organ 12 passes through the wire and is connected with the other end of second circuit breaker 2. When the temperature of the knife switch reaches the upper limit of the set temperature during working, the auxiliary contact of the temperature controller 6 is closed, the coil 10 of the alternating current contactor 3 obtains electricity, the alternating current contactor 3 is attracted, and the fan begins to operate after obtaining electricity; when the temperature is reduced to the set temperature lower limit, the auxiliary contact of the temperature controller is disconnected, the coil 10 of the alternating current contactor 3 loses power, the alternating current contactor 3 releases at the same time, the ventilator 5 loses power and stops running, and the automatic control program of the temperature of the tool setting switch is completed repeatedly; meanwhile, if the ventilator 5 stops running due to a fault, the temperature of the knife switch rises to the set temperature, at the moment, the alarm output contact 11 of the temperature controller 6 is closed, and the second buzzer 12 is electrified to alarm; if the problem load of the ventilator 5 is increased and exceeds the rated current of the ventilator during operation, the normally open contact 7 of the thermal relay 4 is closed, and the first buzzer 8 and the obtained power work to give an alarm.
Further, it is preferable that the ventilator 5 is a 220V axial flow ventilator.
Further, the temperature controller 6 is connected with a temperature probe 13, and the temperature probe 13 is an infrared temperature probe.
The utility model discloses a work flow does: after the first circuit breaker 1 and the second circuit breaker 2 are closed, the temperature controller 6, the temperature probe 13 and the thermal relay 4 are powered on to start working, and the real-time switch temperature of the capacitor cabinet knife is displayed through the temperature controller 6. When the temperature of the knife switch reaches the upper limit of the set temperature during working, the auxiliary contact of the temperature controller 6 is closed, the coil 10 of the alternating current contactor 3 obtains electricity, the alternating current contactor 3 is attracted, and the fan begins to operate after obtaining electricity; when the temperature is reduced to the lower limit of the set temperature, the auxiliary contact of the temperature controller is disconnected, the coil 10 of the alternating current contactor 3 loses power, the alternating current contactor 3 releases, the ventilator 5 loses power and stops running, the automatic control program of the temperature of the knife switch is completed in cycles, and accidents caused by overhigh temperature of the knife switch are effectively prevented. Meanwhile, if the ventilator 5 stops running due to a fault, the temperature of the knife switch rises to the set temperature, at the moment, the alarm output contact 11 of the temperature controller 6 is closed, and the second buzzer 12 is electrified to alarm; if the problem load of the ventilator 5 is increased during operation and exceeds the rated current of the ventilator, the normally open contact 7 of the thermal relay 4 is closed, the first buzzer 8 and the electric power are used for working and alarming, and the follow-up fault or accident caused by the ventilator problem is effectively prevented. The device has realized capacitor box real time monitoring temperature and warning, in time through forced draft cooling, has prolonged the life of equipment, for the operation provides convenience, has practiced thrift still cost of labor, has improved the safety in utilization nature performance of this equipment.
The above description has been made in detail only for the preferred embodiment of the present invention, but the present invention is not limited to the above embodiment, and various changes can be made without departing from the spirit of the present invention within the knowledge scope of those skilled in the art, and all such changes are intended to be encompassed by the present invention.
Claims (3)
1. The utility model provides a become distribution low pressure electric capacity cabinet temperature control device which characterized in that: including first circuit breaker (1), second circuit breaker (2), ac contactor (3), thermorelay (4), ventilation blower (5), temperature control appearance (6), the one end of first circuit breaker (1) is connected on live wire (L), the one end of second circuit breaker (2) is connected on zero line (N), the other end of one circuit breaker (1), second circuit breaker (2) passes through the wire and is connected with two ac contactor (3) respectively, two ac contactor (3) all are connected on thermorelay (4), thermorelay (4) are connected with ventilation blower (5), the other end of first circuit breaker (1) passes through the wire and is connected with temperature control appearance (6), temperature control appearance (6) are connected with normally open contact (7) of thermorelay (4) through the wire, normally open contact (7) of thermorelay (4) are even through first bee calling organ (8) and the other end of second circuit breaker (2) even Connect, temperature controller (6) are connected through normally closed contact (9) of wire and thermorelay (4), normally closed contact (9) of thermorelay (4) are connected with coil (10) of ac contactor (3), coil (10) of ac contactor (3) are connected through the other end of wire and second circuit breaker (2), be provided with alarm output contact (11) on temperature controller (6), the one end of alarm output contact (11) is passed through the wire and is connected with normally open contact (7) of thermorelay (4), the other end of alarm output contact (11) passes through the wire and is connected with second bee calling organ (12), second bee calling organ (12) are connected through the other end of wire and second circuit breaker (2).
2. The temperature control device of the variable distribution low-voltage capacitor box according to claim 1, characterized in that: the ventilator (5) adopts a 220V axial flow ventilator.
3. The temperature control device of the variable distribution low-voltage capacitor box according to claim 1, characterized in that: the temperature control instrument (6) is connected with a temperature probe (13), and the temperature probe (13) adopts an infrared temperature probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021136281.0U CN212968738U (en) | 2020-06-18 | 2020-06-18 | Temperature control device for variable distribution low-voltage capacitor box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021136281.0U CN212968738U (en) | 2020-06-18 | 2020-06-18 | Temperature control device for variable distribution low-voltage capacitor box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212968738U true CN212968738U (en) | 2021-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021136281.0U Active CN212968738U (en) | 2020-06-18 | 2020-06-18 | Temperature control device for variable distribution low-voltage capacitor box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212968738U (en) |
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2020
- 2020-06-18 CN CN202021136281.0U patent/CN212968738U/en active Active
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