CN210778330U - Heating device for circuit breaker - Google Patents

Abstract

The utility model relates to a heating device for circuit breaker to solve the technical problem that the circuit breaker leads to circuit breaker combined floodgate trouble because of winter is cold among the prior art, the utility model discloses a heating device integral erection is on the relevant position of circuit breaker place tower section of thick bamboo, and heating device is including the box that has closed cavity, the first division board that a plurality of levels of its box internal fixed connection set up, and a plurality of heating cavities are separated into with the box to first division board, at every install the heater in the heating cavity, the heater is connected with external power source, every the ventilation hole has been seted up on the lateral wall of heating cavity towards the circuit breaker. Install heating device additional in circuit breaker mounted position department, when ambient temperature was lower winter, guarantee that circuit breaker ambient temperature satisfies the operation requirement, extension circuit breaker life lets the unit operation more stable to have dustproof, simple structure's advantage.

Description

Heating device for circuit breaker

Technical Field

The utility model relates to a circuit breaker is with heating technical field, concretely relates to heating device for circuit breaker.

Background

In recent years, domestic wind power generation is rapidly developed, and the machine set failure fault of the air-cooled converter which often appears in winter is analyzed to be related to the over-low ambient temperature of a wind field in winter. In cold weather in winter, the temperature can reach below 35 ℃ below zero and is lower than the requirement of the working temperature of the circuit breaker, the air-cooled converter has the fault that the machine set reports the switching-on failure of the circuit breaker and the generator circuit breaker in winter, the mechanical parts in the circuit breaker comprise polyester molding compound parts, and the mechanical structure is very sensitive in matching. Because the inside lubricating grease that needs of mechanical structure is lubricated, under extreme low temperature condition, the phenomenon can appear blocking in circuit breaker operating device switching-on part, and polyester molding compound accessory accelerated wear damages simultaneously, causes the circuit breaker switching-on failure trouble, arouses unnecessary fault shutdown.

The circuit breaker exposes in the tower section of thick bamboo, and the circuit breaker is constituteed and is mainly included divide-shut brake coil, energy storage operating mechanism, release, electronic energy storage motor and shell etc.. These mechanisms require the necessary lubricant to maintain and in cold conditions, polyester molding compound parts and circuit boards also deteriorate, which collectively leads to open and close failure.

In summary, when the circuit breaker operates in a low-temperature environment, the switching-on and switching-off faults of the circuit breaker are increased, and the prior art lacks a component for heating the circuit breaker.

Therefore, a heating device for the circuit breaker is needed, and the stable operation of the circuit breaker in a low-temperature environment is guaranteed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a when ambient temperature was lower winter, guarantee that circuit breaker ambient temperature satisfies the operation requirement, extension circuit breaker life lets the unit operation more stable to have dustproof, simple structure's heating device for the circuit breaker.

For solving the above-mentioned problem that exists among the prior art, the utility model provides a pair of heating device for circuit breaker, heating device integral erection is on the relevant position of circuit breaker place tower section of thick bamboo, a serial communication port, including the box that has closed cavity, the first division board that a plurality of levels of box internal fixed connection set up, a plurality of heating cavities, every are separated into with the box to first division board install the heater in the heating cavity, the heater is connected with external power source, every the ventilation hole has been seted up on the lateral wall of heating cavity orientation circuit breaker.

Further, the utility model relates to a heating device for circuit breaker, wherein, the second division board of the vertical setting of still fixedly connected with in the box, heater 4 sets up on the second division board, the second division board forms thermal-insulated cavity with the opposite side wall of box, it has thermal insulation material to fill in the thermal-insulated cavity.

Further, the utility model relates to a heating device for circuit breaker, wherein, the ventilation hole includes exhaust vent and fresh air inlet, the exhaust vent sets up the upper end at heating chamber inside wall, the fresh air inlet sets up the lower extreme at heating chamber inside wall.

Further, the utility model relates to a heating device for circuit breaker, wherein, exhaust vent and fresh air inlet in bank equipartition setting.

Further, the utility model relates to a heating device for circuit breaker, wherein, the exhaust vent upper end is equipped with the deep bead with box fixed connection, the deep bead includes connecting portion, occlusion part and free end, connecting portion one end is fixed on the box, and the occlusion part is connected to the other end, the occlusion part shelters from and corresponds the position at the exhaust vent, the free end is upwards rolled up by occlusion part smooth transition back afterbody.

Further, the utility model relates to a heating device for circuit breaker, wherein, the heater is connected with the power through the temperature controller.

Further, the utility model relates to a heating device for circuit breaker, wherein, the box comprises insulating material baffle.

The utility model relates to a heating device for circuit breaker compares with prior art, has following advantage: the utility model discloses a heating device integral erection is on the relevant position of circuit breaker place tower section of thick bamboo, the utility model discloses contain a plurality of heating cavities, all install the heater in every heating cavity, the guarantee provides sufficient heat source for the circuit breaker, when ambient temperature was lower winter, guarantees that circuit breaker ambient temperature satisfies the operation requirement, extension circuit breaker life, lets the unit operation more stable, the utility model discloses still have dustproof, simple structure's advantage.

The heating device for circuit breaker according to the present invention will be described in detail with reference to the embodiments shown in the drawings.

Drawings

Fig. 1 is a schematic diagram of an internal structure of a box in a heating device for a circuit breaker according to the present invention;

fig. 2 is a schematic structural view of a side wall of a box body in the heating device for the circuit breaker of the present invention;

fig. 3 is an electrical schematic diagram of the heater heating in the heating device for the circuit breaker according to the present invention.

Detailed Description

The utility model relates to a heating device for circuit breaker is whole through installing on the relevant position of circuit breaker place tower section of thick bamboo with the help of current fixed part (if through angle sign indicating number bolted connection), and the relevant position can be as the part of tower section of thick bamboo lateral wall, perhaps is that tower section of thick bamboo lateral wall is inboard. As shown in figure 1, the heating device comprises a box body 1 with a closed chamber, a plurality of first division plates 2 which are horizontally arranged are fixedly connected in the box body 1, the first division plates 2 divide the box body 1 into a plurality of heating chambers, a heater 4 is then installed in each heating chamber, the heater 4 being connected to an external power source to provide a source of heat for the circuit breaker, the heater 4 preferably being a carbon fibre heating resistor, of course, the heater 4 may also be selected from other elements that can meet the requirements of the operating conditions, and in order to dissipate the heat generated by the heater, a vent hole is arranged on one side wall corresponding to each heating chamber, so as to improve the overall temperature of the surrounding environment of the circuit breaker, the problem of circuit breaker divide-shut brake trouble because of the temperature is low when solving the circuit breaker when the operation winter to can hinder part dust to fall into the circuit breaker, further ensure the steady operation of circuit breaker.

The utility model discloses an in the embodiment, the second division board 5 of the vertical setting of fixedly connected with still in the box 1, second division board 5 forms thermal-insulated cavity with the (circuit breaker dorsad) lateral wall of box 1, it has thermal insulation material to fill in the thermal-insulated cavity, a cold air heater 4 sets up on second division board 5 outside for keeping apart box 1, avoid the heat of production to run off in a large number, thermal insulation material wherein can adopt and keep warm effectually, the high side rock wool of fire-protection level, the glass cotton, foam glass, foam ceramic, foaming cement, obturator pearlite (glass bead), one of them such as inorganic fiber composite sheet.

The utility model discloses an in the embodiment, the ventilation hole includes exhaust vent 6 and fresh air inlet 7, and exhaust vent 6 sets up in the upper end of heating cavity (towards the circuit breaker) inside wall, and fresh air inlet 7 sets up the lower extreme at heating cavity (towards the circuit breaker) inside wall for realize the exchange of cold and hot air. Further as shown in fig. 2, the air outlet holes 6 and the air inlet holes 7 are uniformly arranged in rows, so that heat generated by the heater 4 is mixed with outside cold air, and the purpose of quickly raising the temperature is achieved.

The utility model discloses an embodiment, as shown in FIG. 1, the exhaust vent 6 upper end be equipped with box 1 fixed connection's deep bead 8, deep bead 8 includes connecting portion 81, occlusion part 82 and free end 83, and connecting portion 81 one end is fixed on box 1, and occlusion part 82 is connected to the other end, occlusion part 82 shelters from at exhaust vent 6 corresponding position, and the tail portion is upwards rolled up after free end 83 is passed through by occlusion part 82 level and smooth. Through setting up above structure, because the existence of heater 4, rise because of the hot-air again, the cold air descends, and through the hot-air outflow in venthole 6 of heating, the inlet port 7 of last heating chamber is got into along connecting portion 81, shielding part 82 and the free end 83 of deep bead 8 to hot-air partly, and then heats in last heating chamber, further promotes heating efficiency, realizes promoting the temperature around the circuit breaker. The wind shield 8 can slow down the rapid emission of hot air, suppress the outflow trend of air in the heating chamber, and enhance the heating efficiency of air in the heating chamber. Meanwhile, the air inlet 2, the heating chamber, the air outlet 6 and the wind shield 8 are utilized to form an ordered flow direction of heated air and prolong the path, so that the hot air and cold air around the circuit breaker form sufficient convection, and the heat transmission efficiency is effectively improved.

In an embodiment of the present invention, the heater 4 is connected to the power supply via the temperature controller, the temperature controller controls the start and stop of the heater 4, and the wiring diagram and the principle of the temperature controller are shown in fig. 3. When the temperature is lower than the setting value, the contacts in the 'total' and 'low' terminals are closed, and the contactor is electrified to be connected with the power supply of the heater; otherwise, when the temperature rises to the setting value, the contacts in the terminals of the total and the low are separated, and the contactor is electrified to disconnect the power supply of the heater. The simplest control method of the temperature controller is that a temperature sensor is arranged in a control target range, the sensor provides a temperature signal to the temperature controller, a target value can be set on the temperature controller, when the ambient temperature is lower than the target value, the temperature controller outputs the temperature signal, a heater at the rear end is controlled to work, the target temperature is raised, and the output is stopped when the target value is reached.

It should be noted that the box 1 is made of an insulating material. Preferably, the electric insulating baffle is a hard plate-shaped insulating material which is formed by baking and hot-pressing impregnated paper, cotton cloth, glass cloth, impregnated phenolic aldehyde and epoxy resin. The electrified circuit breaker can be effectively isolated, and electric shock is prevented.

The above embodiments are only descriptions of the preferred embodiments of the present invention, and are not intended to limit the scope of the claimed invention, and various modifications made by those skilled in the art according to the technical solutions of the present invention should fall within the scope of the present invention as defined by the claims.

Claims (7)

1. The utility model provides a heating device for circuit breaker, heating device integral erection is on the relevant position of circuit breaker place tower section of thick bamboo, its characterized in that, including box (1) that has closed cavity, first division board (2) that a plurality of levels of box (1) internal fixation set up, first division board (2) are separated into a plurality of heating cavities with box (1), every install heater (4) in the heating cavity, heater (4) are connected with external power source, every the heating cavity has seted up the ventilation hole on the lateral wall towards the circuit breaker.

2. The heating device for the circuit breaker according to claim 1, wherein a second partition plate (5) vertically arranged is further fixedly connected in the box body (1), the heater (4) is arranged on the second partition plate, the second partition plate (5) and another side wall of the box body (1) form a heat insulation chamber, and a heat insulation material is filled in the heat insulation chamber.

3. The heating device for the circuit breaker according to claim 2, wherein the ventilation holes comprise an air outlet hole (6) and an air inlet hole (7), the air outlet hole (6) is disposed at the upper end of the inner side wall of the heating chamber, and the air inlet hole (7) is disposed at the lower end of the inner side wall of the heating chamber.

4. A heating device for circuit breakers according to claim 3, characterized in that said outlet openings (6) and inlet openings (7) are arranged in rows and uniformly.

5. The heating device for the circuit breaker according to claim 4, wherein a wind shield (8) fixedly connected with the box body (1) is arranged at the upper end of the air outlet (6), the wind shield (8) comprises a connecting portion (81), a shielding portion (82) and a free end (83), one end of the connecting portion (81) is fixed on the box body (1), the other end of the connecting portion is connected with the shielding portion (82), the shielding portion (82) is shielded at a position corresponding to the air outlet (6), and the tail of the free end (83) is rolled upwards after the shielding portion (82) is in smooth transition.

6. A heating device for a circuit breaker according to claim 5, characterized in that the heater (4) is connected to a power supply via a thermostat.

7. A heating device for circuit breakers, according to any of the claims from 1 to 6, characterized in that said tank (1) is made up of baffles of insulating material.

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