CN214153452U - Temperature-sensing fireproof distribution box - Google Patents
Temperature-sensing fireproof distribution box Download PDFInfo
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- CN214153452U CN214153452U CN202022246842.9U CN202022246842U CN214153452U CN 214153452 U CN214153452 U CN 214153452U CN 202022246842 U CN202022246842 U CN 202022246842U CN 214153452 U CN214153452 U CN 214153452U
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Abstract
The utility model provides a temperature sensing fire prevention block terminal, including first heat sensor, the second heat sensor, first relay, the second relay, bee calling organ and ac contactor, this first heat sensor and this second heat sensor are installed respectively in load circuit breaker's both sides, the first temperature setting value of this first heat sensor is less than the second temperature setting value of this second heat sensor, rise to this first temperature setting value at load circuit breaker temperature after, this first heat sensor signals, this first relay coil electric actuation that makes, this bee calling organ sends the buzzer warning, when load circuit breaker temperature continues to rise to this second temperature setting value, this second heat sensor signals, this second relay coil electric actuation that makes, this ac contactor disconnection incoming call, make load circuit breaker have a power failure. This temperature sensing fire prevention block terminal can effectively solve because of the inside overheated and the overheated of wire link department of circuit breaker, and the problem of block terminal fire incident that causes.
Description
Technical Field
The utility model relates to a block terminal protection technical field especially involves a temperature sensing fire prevention block terminal.
Background
At present, the circuit breakers adopted in a plurality of low-voltage distribution boxes are DZ47 series, and the circuit breakers are small in size and strong in breaking capacity. However, in the using process, the breaker is overheated and can not be effectively disconnected, so that the breaker burns out, the contact resistance of the connection part of the electric wire and the breaker is increased, and the phenomenon of burning out is caused. If the condition can not be timely found and processed, serious harm can be caused to electric equipment and personnel.
Analysis of the cause of accidents is now common:
1) and the current passing through the circuit breaker in the circuit is overlarge and exceeds the sectioning capacity of the circuit breaker for a long time, so that the circuit breaker is burnt.
2) The inside mechanical mechanism of circuit breaker ages, and the contact oxidation, resistance increase arouses local heating, and the temperature rises gradually along with the increase of time, causes the circuit breaker to burn out.
3) The screw of circuit breaker connecting wire is not hard up, and contact resistance increases, generates heat gradually under the effect of electric current, and the temperature risees gradually along with the increase of time, causes the circuit breaker to burn out, and the wire is insulating to burn out.
At present, the current monitoring protection is additionally arranged in the protection measure of the distribution box in the market. This has reached the fire prevention purpose to a certain extent, but can not effectively solve by the inside reason of circuit breaker and the circuit breaker wire screw looseness arouse the fever fire that arouses.
In the application No.: in CN 201921246652.8's the chinese patent application, involve a fire prevention block terminal, the power distribution box comprises a box body, the top fixed mounting of box has quick-witted case, the positive left side movable mounting of box has left door plant, the positive right side movable mounting of box has right door plant, the inside fixed mounting of box has the mounting bracket, the inside fixed mounting of machine case has one end to extend to the inside smoke of box and feels the sensor, the positive fixed mounting of machine case has the barometer, the top movable mounting of machine case has the top cap, the inside fixed mounting of machine case has explosion-proof box, explosion-proof box's inside movable mounting has liquid carbon dioxide jar. The patent is that after the electric elements are burnt out and smoke is generated, the smoke sensor in the box body senses the smoke and then carbon dioxide is started to extinguish the fire. No advance prevention was achieved.
In the application No.: CN201820597255.4, which is a chinese patent application, relates to a lightning protection and fire prevention power distribution cabinet, including a cabinet body and a cabinet door, wherein a hollow rain cover is disposed at the top of the cabinet body, the area of the bottom of the rain cover is slightly larger than the area of the top of the cabinet body, the bottom of the rain cover is connected with the top of the cabinet body in a penetrating manner, a heat dissipation hole is disposed at the bottom edge of the rain cover, an expansion airbag is disposed in the heat dissipation hole, a fire extinguishing device, an alarm device, a smoke sensor, a temperature sensor and a main control circuit are mounted on the inner side wall of the cabinet body, the smoke sensor and the temperature sensor are respectively connected with the main control circuit, the main control circuit is respectively connected with the fire extinguishing device and the alarm device, and a lightning arrester is mounted at the bottom of the cabinet body; the right side of the cabinet door is hinged with the right side of the cabinet body, the left side of the cabinet door is connected with the cabinet body through a lock catch, and heat insulation layers are arranged inside the cabinet door and inside the cabinet body; the smoke sensor and the fire extinguishing device installed in the patent are matched for fire extinguishing, advance prevention is not achieved, and the smoke sensor and the fire extinguishing device play a role after an electrical element is ignited and smokes.
In the application No.: in CN 201620128843.4's the chinese patent application, involve a novel fire prevention block terminal, include: the box body is a box door hinged with the box body; the box body is internally provided with a detection device, a controller, a liquid carbon dioxide storage tank, an electronic control valve and an alarm device; the detection device, the electronic control valve and the alarm device are respectively and electrically connected with the controller; the electronic control valve is communicated with the liquid carbon dioxide storage tank; further comprising: an air pump; the side surface of the box body is provided with a through hole, and an air inlet of the air pump is communicated with the inside of the box body through the through hole. When the detection device detects an abnormal signal, the controller controls the electronic control valve to open the liquid carbon dioxide storage tank to extinguish a fire source, and simultaneously controls the air pump to work to vacuumize the tank body so as to isolate the fire source from air, further enhance the fire extinguishing effect and effectively ensure that the fire source is extinguished in time; and the controller controls the alarm device to give an alarm to remind surrounding personnel to keep away from the dangerous area. The detection device installed in the patent is matched with the liquid carbon dioxide storage tank and the electronic control valve to extinguish fire, does not prevent fire in advance, and plays a role after an electrical element catches fire and smokes.
Therefore, a novel temperature-sensing fireproof distribution box is invented, and the technical problems are solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can effectively solve because of the inside overheated and wire of circuit breaker links the department overheated, and the temperature sensing fire prevention block terminal of block terminal fire incident that causes.
The purpose of the utility model can be realized by the following technical measures: the temperature-sensing fireproof distribution box comprises a first thermal sensor, a second thermal sensor, a first relay, a second relay, a buzzer and an alternating current contactor, wherein the first thermal sensor and the second thermal sensor are respectively arranged at two sides of a load circuit breaker, the first relay is connected with the first thermal sensor, the second relay is connected with the second thermal sensor, the buzzer is connected with the first relay, the alternating current contactor is connected with the second relay, a first temperature set value of the first thermal sensor is lower than a second temperature set value of the second thermal sensor, the first thermal sensor sends a signal after the temperature of the load circuit breaker rises to the first temperature set value, a coil of the first relay is electrified and closed, the buzzer sends out a buzzer alarm, and when the temperature of the load circuit breaker continues to rise to the second temperature set value, the second heat sensor sends out signal, the second relay coil is electrified and closed, the AC contactor is disconnected with incoming electricity, and the load breaker is powered off.
The purpose of the utility model can be realized by the following technical measures:
the temperature-sensing fireproof distribution box further comprises an alarm indicator light, the alarm indicator light is connected to the first relay, the first heat sensor sends out a signal after the temperature of the load breaker rises to the first temperature set value, the first relay coil is electrified and attracted, and the alarm indicator light is turned on.
This temperature sensing fire prevention block terminal still includes infrared ray temperature sensor, and this infrared ray temperature sensor connects in this first relay, and is unusual detecting certain some temperature in the block terminal, reaches the settlement temperature after, and this infrared ray temperature sensor sends alarm signal, and this first relay coil gets electric actuation, and this buzzer sends the buzzer and reports to the police, and this alarm indicator lights.
The infrared temperature sensor is installed on the inner side of the door of the distribution box.
The number of the first thermal sensors and the number of the second thermal sensors are the same as that of the load circuit breakers in the distribution box, and the first thermal sensors and the second thermal sensors are correspondingly arranged on two sides of each load circuit breaker.
The first thermal sensor consists of 3 low temperature set thermal sensors in series, which are triggered when the temperature reaches 40 ℃.
The second thermal sensor consists of 3 high temperature set thermal sensors in series, which is triggered when the temperature reaches 60 ℃.
The utility model provides a temperature sensing fire prevention block terminal on original fire protection's basis, increases the design and has effectively solved because of the inside mechanical mechanism of circuit breaker is ageing, the contact oxidation, and resistance increase arouses that the part generates heat, and the temperature risees gradually along with the increase of time, causes the problem that the circuit breaker burns out. This temperature sensing fire prevention block terminal has effectively solved because of the screw of circuit breaker connecting wire is not hard up, makes the contact resistance increase, generates heat gradually under the effect of electric current, and the temperature risees gradually along with the increase of time, causes the problem that the circuit breaker burns out, and the wire is insulating to burn out.
Drawings
Fig. 1 is a schematic circuit diagram of an embodiment of the temperature-sensing fireproof distribution box of the present invention;
fig. 2 is a working schematic diagram of the temperature-sensing fire-proof distribution box in an embodiment of the present invention.
Detailed Description
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
As shown in fig. 1, fig. 1 is a structural diagram of the temperature-sensing fireproof distribution box of the present invention. The temperature-sensing fireproof distribution box comprises a first heat sensor 2, a second heat sensor 3, an infrared temperature sensor 1, a first relay KJ1, a second relay KJ2, an alarm indicator lamp 5, a buzzer 4 and an alternating current contactor KM.
And when the button SB is pressed, the coil of the alternating current contactor KM is electrified and sucked, the breaker is electrified, and the load starts to be supplied with power. When the temperature of the load circuit breaker rises to a first set value, the first heat sensor 2 sends a signal, the coil of the first relay KJ1 is electrified for attracting, the alarm device is electrified, the alarm indicator lamp 5 is lightened, and the buzzer 4 sends out a buzzer for alarming. When the temperature of the circuit breaker continues to rise to a second set value, the second thermal sensor 3 sends a signal, the coil of the second relay KJ2 is electrified to be attracted, the protection device is electrified, and the alternating current contactor KM is disconnected to be electrified. When the infrared temperature sensor at the inner side of the door detects that the temperature at a certain point in the distribution box is abnormal, the alarm device is triggered to give an alarm after the temperature reaches the set temperature.
The following are several specific examples to which the present invention may be applied.
The first thermal sensor consists of 3 low temperature set thermal sensors in series. When the temperature reaches 40 ℃, the first thermal sensor is triggered.
The second thermal sensor consists of 3 high temperature set thermal sensors in series. When the temperature reaches 60 ℃, the second thermal sensor is triggered.
As shown in fig. 2, it is the working principle of the temperature-sensing fireproof distribution box of the present invention. Thermal sensors are installed on two sides of the breaker, and infrared temperature sensors are installed on the inner side of the door of the distribution box. The temperature of a heat sensor on the circuit breaker is set to be two values, namely high and low values, when the temperature of the circuit breaker rises to 40 ℃ which is the first value, an alarm device is triggered, when the temperature of the circuit breaker rises to 60 ℃ which is the second set value, a protection device is triggered, an alternating current contactor is disconnected to supply electricity, and the circuit breaker is powered off. The infrared temperature sensor on the door triggers the alarm device when sensing that the temperature of one breaker rises to a set value. The alarm device enables maintenance personnel to conveniently know that the circuit breaker generates heat to cause power failure, and is convenient to overhaul. The thermal sensor is used for monitoring a specific circuit breaker, and the infrared temperature sensor is used for monitoring the circuit breaker in the whole distribution box, so that the local monitoring and the integral monitoring are realized, and double-layer protection is formed.
The first thermal sensor consists of 5 low temperature set thermal sensors in series. When the temperature reaches 45 ℃, the first thermal sensor is triggered.
The second thermal sensor consists of 5 high temperature set thermal sensors in series. When the temperature reaches 65 ℃, the second thermal sensor is triggered.
The utility model discloses a temperature sensing fire prevention block terminal is at the during operation, at circuit breaker both sides installation heat sensor to at the indoor side installation infrared ray temperature sensor of block terminal. The temperature of a heat sensor on the circuit breaker is set to be two values, namely high and low values, when the temperature of the circuit breaker rises to 45 ℃ which is the first value, an alarm device is triggered, when the temperature of the circuit breaker rises to 65 ℃ which is the second set value, a protection device is triggered, an alternating current contactor cuts off the incoming electricity, and the circuit breaker is powered off. The infrared temperature sensor on the door triggers the alarm device when sensing that the temperature of one breaker rises to a set value. The alarm device enables maintenance personnel to conveniently know that the circuit breaker generates heat to cause power failure, and is convenient to overhaul. The thermal sensor is used for monitoring a specific circuit breaker, and the infrared temperature sensor is used for monitoring the circuit breaker in the whole distribution box, so that the local monitoring and the integral monitoring are realized, and double-layer protection is formed.
The first thermal sensor consists of 3 low temperature set thermal sensors in series. When the temperature reaches 42 ℃, the first thermal sensor is triggered.
The second thermal sensor consists of 3 high temperature set thermal sensors in series. When the temperature reaches 62 ℃, the second thermal sensor is triggered.
The utility model discloses a temperature sensing fire prevention block terminal is at the during operation, at circuit breaker both sides installation heat sensor to at the indoor side installation infrared ray temperature sensor of block terminal. The temperature of a heat sensor on the circuit breaker is set to be two values, namely high and low values, when the temperature of the circuit breaker rises to 45 ℃ which is the first value, an alarm device is triggered, when the temperature of the circuit breaker rises to 65 ℃ which is the second set value, a protection device is triggered, an alternating current contactor cuts off the incoming electricity, and the circuit breaker is powered off. The infrared temperature sensor on the door triggers the alarm device when sensing that the temperature of one breaker rises to a set value. The alarm device enables maintenance personnel to conveniently know that the circuit breaker generates heat to cause power failure, and is convenient to overhaul. The thermal sensor is used for monitoring a specific circuit breaker, and the infrared temperature sensor is used for monitoring the circuit breaker in the whole distribution box, so that the local monitoring and the integral monitoring are realized, and double-layer protection is formed.
The utility model discloses a heat sensor subsides of two kinds of temperature setting values are applied in load circuit breaker's both sides, and the inside temperature of perception circuit breaker rises to load circuit breaker formation inside temperature, and the ladder of outage sets up the protection after reporting to the police earlier. The infrared temperature sensors are adopted to monitor all load circuit breakers, and the alarm protection is realized by sensing the ultrahigh temperature at a certain point of the load circuit breakers. The thermal sensor is used for monitoring a specific circuit breaker, and the infrared temperature sensor is used for monitoring the circuit breaker in the whole distribution box, so that the local monitoring and the integral monitoring are realized, and double-layer protection is formed.
Claims (7)
1. The temperature-sensing fireproof distribution box is characterized by comprising a first thermal sensor, a second thermal sensor, a first relay, a second relay, a buzzer and an alternating current contactor, wherein the first thermal sensor and the second thermal sensor are respectively arranged on two sides of a load breaker, the first relay is connected with the first thermal sensor, the second relay is connected with the second thermal sensor, the buzzer is connected with the first relay, the alternating current contactor is connected with the second relay, a first temperature set value of the first thermal sensor is lower than a second temperature set value of the second thermal sensor, after the temperature of the load breaker rises to the first temperature set value, the first thermal sensor sends a signal, a coil of the first relay is electrically attracted, the buzzer sends out a buzzer sound alarm, and when the temperature of the load breaker continues to rise to the second temperature set value, the second heat sensor sends out signal, the second relay coil is electrified and closed, the AC contactor is disconnected with incoming electricity, and the load breaker is powered off.
2. The temperature-sensing fire prevention distribution box of claim 1, further comprising an alarm indicator light, wherein the alarm indicator light is connected to the first relay, and when the temperature of the load breaker rises to the first temperature setting, the first thermal sensor sends a signal, the first relay coil is powered on and closed, and the alarm indicator light is turned on.
3. The temperature-sensing fireproof distribution box of claim 2, further comprising an infrared temperature sensor, wherein the infrared temperature sensor is connected to the first relay, when a temperature anomaly at a certain point in the distribution box is detected, and the temperature reaches a set temperature, the infrared temperature sensor sends an alarm signal, the first relay coil is powered on and attracted, the buzzer sends out a buzzer to alarm, and the alarm indicator lights up.
4. The temperature-sensitive fire-resistant electrical distribution box of claim 3, wherein the infrared temperature sensor is mounted inside a door of the distribution box.
5. The temperature-sensitive fire protection electrical distribution box of claim 1, wherein the number of the first thermal sensors and the second thermal sensors is the same as the number of load circuit breakers in the electrical distribution box, the first thermal sensors and the second thermal sensors being mounted on both sides of each load circuit breaker in a one-to-one correspondence.
6. The temperature-sensitive fire protection electrical box of claim 1, wherein the first thermal sensor is comprised of 3 low temperature setting thermal sensors connected in series, the first thermal sensor being activated when the temperature reaches 40 ℃.
7. The temperature-sensitive fire protection electrical box of claim 1, wherein the second thermal sensor is comprised of 3 temperature-set high thermal sensors connected in series, the second thermal sensor being activated when the temperature reaches 60 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022246842.9U CN214153452U (en) | 2020-10-09 | 2020-10-09 | Temperature-sensing fireproof distribution box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022246842.9U CN214153452U (en) | 2020-10-09 | 2020-10-09 | Temperature-sensing fireproof distribution box |
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| Publication Number | Publication Date |
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| CN214153452U true CN214153452U (en) | 2021-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022246842.9U Active CN214153452U (en) | 2020-10-09 | 2020-10-09 | Temperature-sensing fireproof distribution box |
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| CN (1) | CN214153452U (en) |
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- 2020-10-09 CN CN202022246842.9U patent/CN214153452U/en active Active
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