阅读说明：本技术 一种输电线路用散热性强的避雷装置 (Lightning arrester with strong heat dissipation performance for power transmission line ) 是由 张千斌 蔡震 卢晓勇 曾鑫 王震 吴剑雄 朱翔 王光伟 于 2020-09-15 设计创作，主要内容包括：本发明公开了一种输电线路用散热性强的避雷装置,包括避雷器和保护外壳,所述避雷器设置在所述保护外壳的内部,所述保护外壳的内侧与避雷器之间构成散热腔,所述散热腔内设置有散热装置,所述散热装置用于当避雷器温度高于设定阈值时进行散热。本发明解决了现有的避雷装置散热性能差的技术问题。保护外壳与避雷器之间形成散热腔,当避雷器的温度高于设定阈值时,设置在散热腔中的散热装置运转进行散热,加快避雷器的散热速度,进而提高避雷器的散热性能。(The invention discloses a lightning arrester with high heat dissipation performance for a power transmission line, which comprises a lightning arrester and a protective shell, wherein the lightning arrester is arranged in the protective shell, a heat dissipation cavity is formed between the inner side of the protective shell and the lightning arrester, a heat dissipation device is arranged in the heat dissipation cavity, and the heat dissipation device is used for dissipating heat when the temperature of the lightning arrester is higher than a set threshold value. The lightning arrester solves the technical problem that the existing lightning arrester is poor in heat dissipation performance. A heat dissipation cavity is formed between the protective shell and the lightning arrester, when the temperature of the lightning arrester is higher than a set threshold value, the heat dissipation device arranged in the heat dissipation cavity is operated to dissipate heat, the heat dissipation speed of the lightning arrester is accelerated, and the heat dissipation performance of the lightning arrester is improved.)

1. The lightning arrester with high heat dissipation performance for the power transmission line is characterized by comprising a lightning arrester and a protective shell, wherein the lightning arrester is arranged inside the protective shell, a heat dissipation cavity is formed between the inner side of the protective shell and the lightning arrester, a heat dissipation device is arranged in the heat dissipation cavity, and the heat dissipation device is used for dissipating heat when the temperature of the lightning arrester is higher than a set threshold value.

2. The lightning protection device with high heat dissipation performance for the transmission line according to claim 1, wherein the heat dissipation device comprises a temperature sensing device, a control unit and a ventilation device, and the control unit is in communication connection with the temperature sensing device and the ventilation device;

the temperature sensing device is arranged in the protective shell and used for detecting the temperature value of the heat dissipation cavity and transmitting the temperature value to the control unit;

the control unit is arranged outside the protective shell and used for judging whether the temperature value of the heat dissipation cavity is higher than a set threshold value or not and controlling the operation of the air interchanger;

the ventilation device is arranged in the protective shell and used for heat dissipation of the heat dissipation cavity and the outside through flowing air circulation.

3. The lightning protection device with high heat dissipation performance for the transmission line according to claim 2, wherein the heat dissipation device further comprises a water storage cavity, a heat dissipation channel, a water collection channel and a water pumping device, the bottom of the water storage cavity is communicated with one end of the heat dissipation channel through a water control switch, the side wall of the water storage cavity is communicated with one end of the water collection channel through the water pumping device, the other end of the heat dissipation channel is communicated with the other end of the water collection channel through a connecting channel, and the water control switch and the water pumping device are controlled by the control unit.

4. The lightning protection device with high heat dissipation performance for the power transmission line according to claim 3, wherein the pumping device comprises a pumping pump body, the pumping pump body comprises an upper pump body and a lower pump body, the upper pump body and the lower pump body are connected with each other to form a right angle, a water inlet pipe is arranged at the bottom of the lower pump body, the water inlet pipe is communicated with the water collecting channel, a water outlet pipe is arranged on the side wall of the lower pump body, the water outlet pipe is communicated with the side wall of the water storage cavity, a piston is arranged inside the upper pump body, an elastic element is fixedly arranged at one end of the piston, the other end of the elastic element is fixedly arranged on the inner side wall of the protective shell, and the elastic element is.

5. The lightning arrester of claim 4, wherein the upper end surface of the piston is connected to the pump opening of the upper pump body by a film.

6. The lightning protection device with high heat dissipation performance for the transmission line according to claim 4, wherein the protective casing is a flexible telescopic protective casing.

7. The lightning protection device with high heat dissipation performance for the transmission line according to claim 3, wherein waterproof layers are arranged outside the water storage cavity, the heat dissipation channel, the water collection channel and the water pumping device.

8. The lightning protection device with high heat dissipation performance for the transmission line according to claim 4, wherein an insulating layer is arranged on the outer surface of the elastic element.

9. The lightning protection device with high heat dissipation performance for the transmission line according to claim 3, wherein the heat dissipation channel is in a zigzag shape.

Technical Field

The invention relates to the technical field of lightning protection, in particular to a lightning protection device with strong heat dissipation for a power transmission line.

Background

Thunderbolt phenomenon seriously threatens the reliable operation of electric power all the time, in order to reduce the emergence of thunderstorm accident, the electric wire netting is taken various lightning protection measures and is protected transmission line, it is exactly one of them lightning protection measure to install lightning arrester additional on transmission line, nevertheless the heat dissipation is a difficult problem of lightning arrester all the time, experiments show, overvoltage effect can make lightning arrester's insulator and insulator inside high temperature, if can not in time distribute away the heat, the temperature exceeds certain limit value, can influence the electrically conductive efficiency of core greatly, cause destruction to the electric conduction system, make lightning protection greatly reduced, and influence lightning arrester's reliability and life.

For example, chinese patent document CN210925629U discloses a "lightning arrester" including an insulating housing and a core disposed in the insulating housing, wherein the core includes a plurality of parallel assemblies, each parallel assembly is arranged in an axial direction in a stacked manner, the parallel assembly has a plurality of resistance units connected in parallel, and each resistance unit is arranged in an axial direction in a stacked manner. The defects of the patent documents are that the lightning arrester can only radiate by itself, and the radiating performance is poor.

Disclosure of Invention

The lightning arrester mainly solves the technical problem that the existing lightning arrester is poor in heat dissipation performance; the lightning arrester with high heat dissipation performance for the power transmission line is characterized in that a heat dissipation cavity is formed between a protective shell and the lightning arrester, the heat dissipation device is arranged in the heat dissipation cavity, when the temperature of the lightning arrester is higher than a set threshold value, the heat dissipation device operates to dissipate heat, the heat dissipation speed of the lightning arrester is increased, and the heat dissipation performance of the lightning arrester is improved.

The technical problem of the invention is mainly solved by the following technical scheme: the lightning arrester comprises a lightning arrester and a protective shell, wherein the lightning arrester is arranged inside the protective shell, a heat dissipation cavity is formed between the inner side of the protective shell and the lightning arrester, a heat dissipation device is arranged in the heat dissipation cavity, and the heat dissipation device is used for dissipating heat when the temperature of the lightning arrester is higher than a set threshold value.

A heat dissipation cavity is formed between the protective shell and the lightning arrester, when the temperature of the lightning arrester is higher than a set threshold value, the heat dissipation device arranged in the heat dissipation cavity is operated to dissipate heat, the heat dissipation speed of the lightning arrester is accelerated, and the heat dissipation performance of the lightning arrester is improved.

Preferably, the heat dissipation device comprises a temperature sensing device, a control unit and an air exchange device, wherein the control unit is in communication connection with the temperature sensing device and the air exchange device;

the temperature sensing device is arranged in the protective shell and used for detecting the temperature value of the heat dissipation cavity and transmitting the temperature value to the control unit;

the control unit is arranged outside the protective shell and used for judging whether the temperature value of the heat dissipation cavity is higher than a set threshold value or not and controlling the operation of the air interchanger;

the ventilation device is arranged in the protective shell and used for heat dissipation of the heat dissipation cavity and the outside through flowing air circulation.

The temperature sensing device is used for detecting the temperature value of heat dissipation chamber (can carry out heat-conduction between heat dissipation intracavity air and the arrester, and then lead to heat dissipation intracavity air temperature the same with the temperature of arrester, consequently, the temperature of arrester can be obtained through the temperature that detects the heat dissipation chamber), and upload the temperature in heat dissipation chamber that will detect to the control unit, the control unit judges whether the temperature value in heat dissipation chamber is higher than the settlement threshold value, if be higher than the settlement threshold value then control breather operation, make heat dissipation chamber and external air circulation that forms the flow, accelerate the rate of decline of the temperature value of heat dissipation intracavity air, and then accelerate the rate of decline of the temperature of arrester, with this heat dispersion who improves the arrester, the reliability and the life of arrester have been improved.

Preferably, the heat dissipation device further comprises a water storage cavity, a heat dissipation channel, a water collection channel and a water pumping device, the bottom of the water storage cavity is communicated with one end of the heat dissipation channel through a water control switch, the side wall of the water storage cavity is communicated with one end of the water collection channel through the water pumping device, the other end of the heat dissipation channel is communicated with the other end of the water collection channel through a connecting channel, and the water control switch and the water pumping device are controlled by the control unit.

The air interchanger operates, when making heat dissipation chamber and external formation mobile air cycle dispel the heat, open accuse water switch and pumping device, make water rely on self gravity, in heat dissipation channel inflow connecting channel, rethread pumping device's effect, in water storage chamber flows in through the passageway that catchments, form mobile water cycle, and then reduce the temperature value of air in the heat dissipation chamber, further accelerate the rate of decline of the temperature of arrester, with this heat dispersion who improves the arrester, the reliability and the life of arrester have been improved.

Simultaneously when the external world is in moist environment, in order to prevent that the steam in the external environment from entering into the protective housing through breather and inside to produce the influence to the arrester, can only dispel the heat through the hydrologic cycle that flows, when guaranteeing arrester heat dispersion, guarantee that the steam in the ambient air can not enter into the protective housing through breather and inside to produce the destruction to the arrester, and then influence the reliability and the life of arrester.

Preferably, the pumping device include the water pump body, the water pump body includes the pump body and the lower pump body, go up the pump body and constitute the right angle with lower pump body interconnect, the bottom of the pump body is provided with the inlet tube down, the inlet tube is linked together with the water collecting channel, the lateral wall of the pump body is provided with the outlet pipe down, the outlet pipe is linked together with the lateral wall in water storage chamber, it is provided with the piston to go up the inside of the pump body, the one end of piston has set firmly elastic element, elastic element's the other end sets firmly in protecting sheathing's inside wall, elastic element is controlled by the control unit.

The control unit periodically gives current to the elastic element, the elastic element is electrified and stretched, the power loss is recovered to the original length, and then the piston is driven to move left and right, so that the pressure between the water collecting channel and the water flow is reduced, the water flow is pumped to move upwards and enters the lower pump body through the water inlet pipe, and then enters the water storage tank from the lower pump body through the water outlet pipe, and the next half stage of flowing water circulation is completed.

Preferably, the upper end surface of the piston is connected with the pump opening of the upper pump body through a film.

The upper end face of the piston is connected with the pump opening of the upper pump body through the film, the pump body is prevented from forming convection with air in the heat dissipation cavity, and the reliability of the water pumping device is further improved.

Preferably, the protective shell is a flexible telescopic protective shell.

The protective housing is flexible protective housing, and when elastic element circular telegram is flexible, lose the electricity and resume long term, and then drive protective housing back and forth movement for the air in the heat dissipation chamber forms the convection current, and the mutual heat-conduction between the air is accelerated, makes the temperature value of each department air keep at same level in the heat dissipation chamber, and the condition that the temperature of near heat dissipation channel air is less than the temperature of all the other air everywhere can not appear.

Preferably, waterproof layers are arranged on the outer sides of the water storage cavity, the heat dissipation channel, the water collection channel and the water pumping device.

The waterproof layer is arranged to prevent water in the water storage cavity, the heat dissipation channel, the water collection channel and the water pumping device from seeping outwards to damage the lightning arrester, and then the reliability and the service life of the lightning arrester are affected.

Preferably, the outer surface of the elastic element is provided with an insulating layer.

The outer surface of the elastic element is provided with an insulating layer, so that the current can be prevented from leaking and colliding with high-temperature air in the heat dissipation cavity to generate explosion when the elastic element is electrified and contracted.

Preferably, the heat dissipation channel is in a zigzag shape.

The heat dissipation channel is in a zigzag shape, so that the stay time of water in the heat dissipation channel can be prolonged, the contact area between the heat dissipation channel and the air in the heat dissipation cavity can be increased, the water flow passing through the heat dissipation channel can fully absorb the heat of the air in the heat dissipation cavity, the reduction rate of the temperature value of the air in the heat dissipation cavity is accelerated, the reduction rate of the temperature of the lightning arrester is accelerated, the heat dissipation performance of the lightning arrester is improved, and the reliability and the service life of the lightning arrester are improved.

The invention has the beneficial effects that:

1) when the temperature value of the heat dissipation cavity is higher than a set threshold value, the air interchanger operates to enable the heat dissipation cavity and the outside to form flowing air circulation, so that the reduction rate of the temperature value of the air in the heat dissipation cavity is accelerated, and further the reduction rate of the temperature of the lightning arrester is accelerated, the heat dissipation performance of the lightning arrester is improved, and the reliability and the service life of the lightning arrester are improved;

2) when the ventilation device operates, the water control switch and the water pumping device are turned on, so that water flows into the connecting channel through the heat dissipation channel by means of the self gravity and flows into the water storage cavity through the water collection channel under the action of the water pumping device to form flowing water circulation, and the reduction rate of the temperature value of the air in the heat dissipation cavity is further accelerated, namely the reduction rate of the temperature of the lightning arrester is further accelerated;

3) when the outside is in a humid environment, heat dissipation is carried out only through flowing water circulation, so that the heat dissipation performance of the lightning arrester is guaranteed, and meanwhile, the moisture in the outside air is prevented from entering the protective shell through the air interchanger to damage the lightning arrester, and the reliability and the service life of the lightning arrester are further influenced;

4) the heat dissipation channel is in a zigzag shape, so that the stay time of water in the heat dissipation channel can be prolonged on one hand, and the contact area between the heat dissipation channel and the air in the heat dissipation cavity can be increased on the other hand, so that the water flow passing through the heat dissipation channel can fully absorb the heat of the air in the heat dissipation cavity, the reduction rate of the temperature value of the air in the heat dissipation cavity is accelerated, and the reduction rate of the temperature of the lightning arrester is further accelerated, thereby improving the heat dissipation performance of the lightning arrester, and improving the reliability and the service life of the lightning arrester;

5) the control unit gives the elastic element current periodically, the elastic element is electrified and stretched, the power loss is recovered to the original length, the piston is further driven to move left and right, the pumping water flow is pumped to move upwards to form complete water circulation, and meanwhile, the protective shell is driven to move back and forth, so that air in the heat dissipation cavity forms convection, mutual heat conduction between the air is accelerated, the temperature value of the air at each position in the heat dissipation cavity is kept at the same level, and the condition that the temperature of the air near the heat dissipation channel is lower than that of the air at all positions can be avoided.

Drawings

Fig. 1 is a schematic view of a structure of a lightning arrester according to the present invention.

Fig. 2 is an enlarged schematic view of a portion a in the present invention.

Fig. 3 is a schematic view of a protective enclosure of the present invention.

In the figure, 1, a lightning arrester main body, 101, a lightning arrester core body, 102, an insulating outer sleeve, 103, an umbrella skirt, 2, a wiring terminal, 3, a grounding terminal, 4, a grounding chain, 51, an upper shell cover, 52, a lower shell cover, 53, a side shell, 531, a flexible telescopic shell, 532, a hard shell, 6, a heat dissipation cavity, 7, a control unit, 8, a temperature sensor, 9, an air inlet fan, 10, an air outlet fan, 11, a power supply unit A, 12, a power supply unit B, 13, a water storage cavity, 14, a heat dissipation channel, 15, a water collection channel, 16, a placement groove, 17, a switch board, 18, a spring A, 19, an upper pump body, 20, a lower pump body, 21, a water inlet pipe, 22, a water outlet pipe, 23, a piston, 24, a film, 25, a spring B, 26 and a connection.

Detailed Description

The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.

Example (b): as shown in fig. 1 to 3, the lightning arrester with high heat dissipation performance for a power transmission line according to the present embodiment includes:

the arrester, it includes arrester main part 1, binding post 2, ground terminal 3 and ground chain 4, and the arrester main part includes arrester core 101, and the arrester core is made by pure copper, wraps up in the insulating overcoat 102 in the arrester core outside, and equidistant cover is equipped with a plurality of full skirts 103 about the outside of insulating overcoat, full skirt and the coaxial setting of arrester core, and the full skirt is made by pottery. Binding post and the one end fixed connection of arrester main part, ground terminal and the other end fixed connection of arrester main part, ground chain and ground terminal fixed connection.

The protective housing is of a cylindrical structure and comprises an upper housing cover 51, a lower housing cover 52 and a side housing 53, the upper housing cover and the lower housing cover are fixedly connected with the side housing respectively, the side housing is formed by combining 2 flexible telescopic housings 531 and 2 hard housings 532 at intervals, a heat dissipation cavity 6 is formed between the protective housing and the lightning arrester, and a heat dissipation device is arranged in the heat dissipation cavity.

The heat dissipation device comprises a temperature sensing device, a control unit 7, a power supply unit, a ventilation device and 2 water circulation devices. In this embodiment, the temperature sensing device is a temperature sensor 8, the ventilation device includes 2 air supply fans 9 and 2 air outlet fans 10, and the power supply unit includes a power supply unit a11 and a power supply unit B12. The temperature sensor and the power supply unit A are fixedly installed on a hard shell of the side shell, the air inlet fan is symmetrically and fixedly installed at the top of the upper shell cover, the air outlet fan is symmetrically and fixedly installed at the bottom of the lower shell cover, the control unit is fixedly installed outside the upper shell cover, and the water circulating device is installed in the heat dissipation cavity and is respectively located in the same sector area with the flexible telescopic shell of the side shell. The power supply unit A is used for supplying power to the air interchanger, the power supply unit B is installed in the water circulating device and used for supplying power to the water circulating device, the air interchanger and the water circulating device are controlled by the control unit, and the temperature sensor is in communication connection with the control unit.

The water circulation device comprises a water storage cavity 13, a heat dissipation channel 14, a water collecting channel 15 and a water pumping device, waterproof layers are arranged on the outer sides of the water storage cavity, the heat dissipation channel, the water collecting channel and the water pumping device, and a power supply unit B is installed at the bottom of the water storage cavity. The bottom of the water storage cavity is provided with a water outlet, one end of a heat dissipation channel is communicated with the water outlet, a telescopic water control switch is installed at the water outlet, a placing groove 16 for placing the water control switch is formed in the bottom of the water storage cavity, the water control switch comprises a switch board 17 and a spring A18, the shapes of the switch board and the water outlet are consistent, one end of the switch board is fixedly connected with one end of the spring A, the other end of the spring A is fixedly connected with the placing groove, the heat dissipation channel is in a fold line shape and is installed at a position close to a lightning arrester, the heat dissipation channel is communicated with a water collection channel through a connecting channel 26, the water pumping device comprises a water pumping pump body, the water pumping pump body comprises an upper pump body 19 and a lower pump body 20, the upper pump body and the lower pump body are communicated through welding, the upper pump body and the lower pump body are in right angle, the outlet pipe is linked together with the lateral wall in water storage chamber, goes up the inside piston 23 that is provided with of pump body, and the up end of piston is connected through film 24 with the pump mouth of last pump body, and the one end fixedly connected with spring B25 of piston, spring B's the other end and the flexible shell fixed connection of side casing, spring B's surface parcel has the insulating layer, and spring A and spring B all with electrical connection of electrical unit B.

The working principle of the embodiment is as follows: when the lightning arrester is used, the lightning arrester is installed at a needed position, after the lightning arrester conducts electricity through lightning, current is conducted to the ground through the wiring terminal, the lightning arrester, the grounding terminal and the grounding chain, in the process, the instantaneous current is large, so that the temperature inside the lightning arrester is large, the temperature inside the lightning arrester is transmitted to the heat dissipation cavity through heat conduction, and therefore the temperature of air in the heat dissipation cavity and the temperature inside the lightning arrester are in the same level. At the moment, the temperature sensor detects the temperature value of the air in the heat dissipation cavity and uploads the temperature value to the control unit, the control unit judges whether the detected temperature value is higher than a set threshold value or not, if so, the control unit controls the air inlet fan and the air outlet fan to operate so that the heat dissipation cavity and the outside form flowing air circulation, meanwhile, the control unit controls the power supply unit B to supply power to the spring A, the spring A is electrified and contracted, the switch board is opened, the water in the water storage cavity flows into the connecting channel through the heat dissipation channel by virtue of the self gravity, the control unit controls the power supply unit B to periodically supply power to the spring B, the spring B is electrified and contracted, the power loss is recovered to the original length, and then the piston is driven to move left and right, so that the pressure between the water flow and the water flow in the water collection channel is reduced, and then the water flow is pumped to move upwards and enters the lower, the flexible telescopic shell also moves back and forth when the piston moves left and right, so that air in the heat dissipation cavity forms convection, mutual heat conduction between the air is accelerated, the temperature value of the air at each position in the heat dissipation cavity is kept at the same level, and the condition that the temperature of the air near the heat dissipation channel is lower than that of the air at each position of the rest of the heat dissipation channel is avoided. And when the temperature in the heat dissipation cavity is reduced to be below a set value, the air inlet fan, the air outlet fan, the water pumping device and the control switch are turned off.

Through the heat dissipation chamber with the external mobile air cycle of formation and the inside mobile hydrologic cycle of heat dissipation chamber, the falling rate of the temperature value of the intracavity air that dispels the heat is accelerated, and then the falling rate of the temperature of accelerating the arrester to this heat dispersion that improves the arrester has improved the reliability and the life of arrester.

Simultaneously when the external world is in moist environment, only need dispel the heat through the hydrologic cycle that flows, when guaranteeing arrester heat dispersion, guarantee that the steam in the outside air can not enter into the protective housing through breather and inside to produce the destruction to the arrester, and then influence the reliability and the life of arrester.