阅读说明：本技术 一种电缆分支箱 (Cable branch box ) 是由 李永 梁化红 于 2021-09-16 设计创作，主要内容包括：本发明公开了一种电缆分支箱,属于电气设备技术领域。一种电缆分支箱,包括第一安装箱,所述第一安装箱内开设有密封安装腔,所述密封安装腔完全密封,还包括：固定连接在所述密封安装腔内的第二安装箱,所述第二安装箱内固定连接有安装盒；本发明通过使相应的插头脱离相应的第一接线端子,使第二接线端子断电,然后在第二接线端子上接上支线,接电完成后将插头插入第一接线端子,使第二接线端子通电,从而在接线时无需将相应的电路断电,避免对相应电路上的用户造成困扰,同时提高了接电的安全性,且分支箱利用保护气体在分支箱内循环和散热油相互配合,对密封安装腔内部进行散热的同时防止电气元件老化,延长电气元件的使用寿命。(The invention discloses a cable branch box, and belongs to the technical field of electrical equipment. The utility model provides a cable branch box, includes first install bin, sealed installation cavity has been seted up in the first install bin, sealed installation cavity is totally sealed, still includes: the second installation box is fixedly connected in the sealed installation cavity, and an installation box is fixedly connected in the second installation box; according to the invention, the corresponding plug is separated from the corresponding first connecting terminal, the second connecting terminal is powered off, then the branch line is connected to the second connecting terminal, the plug is inserted into the first connecting terminal after the power connection is finished, and the second connecting terminal is powered on, so that the corresponding circuit is not required to be powered off during the wiring, the trouble on users on the corresponding circuit is avoided, the power connection safety is improved, and the branch box utilizes the mutual cooperation of the circulation of protective gas in the branch box and the heat dissipation oil, so that the heat dissipation is carried out in the sealed installation cavity, the aging of the electric element is prevented, and the service life of the electric element is prolonged.)

1. The utility model provides a cable branch box, includes first install bin (1), sealed installation cavity (101) have been seted up in first install bin (1), its characterized in that still includes:

the second installation box (102) is fixedly connected in the sealed installation cavity (101), and an installation box (3) is fixedly connected in the second installation box (102);

the insulating tube (301) is connected to the mounting box (3) in a sliding mode, and one end, located outside the mounting box (3), of the insulating tube (301) is fixedly connected with a plug (3011);

the conducting strip (304) is fixedly connected to the inner wall of the bottom of the mounting box (3);

the conductive joint (3012) is fixedly connected to the bottom of the insulating tube (301);

the second wiring terminal (303) is fixedly connected to the bottom of the mounting box (3), the second wiring terminal (303) is electrically connected with the conducting strip (304), the conducting joint (3012) slides on the conducting strip (304) and is electrically connected with the conducting strip (304), and the conducting joint (3012) is electrically connected with the plug (3011) through a conducting wire (305);

the screw rod (302) is rotatably connected to the insulating tube (301), and the screw rod (302) is in threaded connection with the mounting box (3);

the junction box (2) is fixedly connected in the sealed installation cavity (101);

a first connecting terminal (202) fixedly connected to the junction box (2) and corresponding to the plug (3011);

the electricity connection hole (201) of fixed connection in junction box (2) outer wall, with first binding post (202) electric connection.

2. The cable branch box according to claim 1, characterized in that a folding sealing cover (306) is arranged in the mounting box (3), and two ends of the folding sealing cover (306) are respectively fixedly connected with the insulating tube (301) and the inner wall of the mounting box (3).

3. The cable branch box according to claim 1, wherein a shielding gas box (4) is fixedly connected in the seal installation cavity (101), and the shielding gas box (4) is communicated with the seal installation cavity (101) through an exhaust pipe (405).

4. The cable branch box according to claim 3, characterized in that a sliding cavity (406) is formed in the shielding gas box (4), a sealing plate (401) is connected in the sliding cavity (406) in a sliding manner, a threaded rod (402) is rotatably connected to the first mounting box (1), the threaded rod (402) is rotatably connected to the sealing plate (401), an exhaust pipe (405) is fixedly connected to the top of the sliding cavity (406), and the exhaust pipe (405) is located at the center of the sliding cavity (406).

5. The cable breakout box according to claim 4, characterized in that a protective box (404) is fixedly connected to the outer wall of the first installation box (1).

6. The cable branch box according to claim 3, wherein a power cavity and a heat dissipation cavity are formed in the bottom of the first installation box (1), the power cavity is communicated with the heat dissipation cavity, heat dissipation oil is arranged in the heat dissipation cavity, a first piston cylinder (601) is fixedly connected in the power cavity, the output end of the first piston cylinder (601) is connected with the protective gas box (4) through a second gas pipe (604), the second gas pipe (604) is located in the heat dissipation cavity and is spiral, and the sealing installation cavity (101) is connected with the input end of the first piston cylinder (601) through a first gas pipe (603).

7. The cable branch box according to claim 6, wherein a second piston cylinder (602) is fixedly connected to the top of the first piston cylinder (601), an input end of the second piston cylinder (602) is connected to the first air pipe (603) through a third air pipe (605), and an output end of the second piston cylinder (602) is communicated with the power cavity.

8. The cable branch box according to claim 7, wherein a mounting shaft (8) is rotatably connected in the heat dissipation cavity, and fan blades (801) are fixedly connected to the mounting shaft (8).

9. The cable branch box according to claim 8, wherein a third piston cylinder (606) is fixedly connected in the heat dissipation cavity, an output end of the third piston cylinder (606) is fixedly connected with a first heat dissipation oil pipe (607), an output end of the first heat dissipation oil pipe (607) is fixedly connected with an atomizing nozzle (608), an input end of the third piston cylinder (606) is fixedly connected with a second heat dissipation oil pipe (609), and an input end of the second heat dissipation oil pipe (609) extends to the bottom of the heat dissipation oil.

10. The cable branch box according to claim 9, wherein a motor (5) is fixedly connected in the power cavity, an output end of the motor (5) is fixedly connected with a driving shaft (501), a side wall of the power cavity is rotatably connected with a rotating shaft (704), a bottom of the rotating shaft (704) is fixedly connected with an eccentric wheel (705), a driving end of the third piston cylinder (606) is rotatably connected to the eccentric wheel (705), the rotating shaft (704) and a mounting shaft (8) are rotatably connected to the driving shaft (501) through a gear shaft transmission set (7), the driving shaft (501) is provided with a first crankshaft (502) and a second crankshaft (503), the driving end of the first piston cylinder (601) is rotatably connected to the first crankshaft (502), the driving end of the second piston cylinder (602) is rotatably connected to the second crankshaft (503), and the first crankshaft (502) and the second crankshaft (503) are both connected to the driving shaft (501) through a ratchet assembly, and the ratchet directions of the two groups of ratchet assemblies are opposite.

Technical Field

The invention relates to the technical field of electrical equipment, in particular to a cable branch box.

Background

With the development of society, the demand of people on electric power is continuously increased, so that the capacity of an electric power system is continuously expanded and increased, and correspondingly, the network of an electric power circuit is also continuously increased, and therefore, a cable branch box is arranged at a branch of an electric power grid and used for connecting a branch circuit.

When a new branch line is connected to an existing cable branch box, the branch line in the same area needs to be powered off in order to improve safety, inconvenience is brought to the area after power off, in addition, in the working process of the cable branch box, an internal circuit and an electric element can be aged along with time change, the internal circuit and the electric element can be oxidized by oxygen in the air, and therefore the service life of the cable branch box is shortened, and therefore the cable branch box needs to be designed.

Disclosure of Invention

The invention aims to solve the problem of inconvenient wiring in the prior art, and provides a cable branch box.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a cable branch box, includes first install bin, sealed installation cavity has been seted up in the first install bin, sealed installation cavity is totally sealed, still includes: the second installation box is fixedly connected in the sealed installation cavity, and an installation box is fixedly connected in the second installation box; the insulating tube is connected to the mounting box in a sliding mode, and one end, located outside the mounting box, of the insulating tube is fixedly connected with a plug; the conducting strip is fixedly connected to the inner wall of the bottom of the mounting box; the conductive joint is fixedly connected to the bottom of the insulating tube; the second wiring terminal is fixedly connected to the bottom of the mounting box and electrically connected with the conducting strip, the conducting joint slides on the conducting strip and is electrically connected with the conducting strip, and the conducting joint is electrically connected with the plug through a conducting wire; the screw rod is rotatably connected to the insulating tube and is in threaded connection with the mounting box; the junction box is fixedly connected in the sealed installation cavity; the first wiring terminal is fixedly connected to the wiring box and corresponds to the plug; the electricity connection hole of fixed connection at the junction box outer wall, with first binding post electric connection.

In order to prevent gas leakage, it is preferable that a folding sealing cover is arranged in the mounting box, and two ends of the folding sealing cover are respectively and fixedly connected with the insulating tube and the inner wall of the mounting box.

In order to facilitate preservation of the protective gas in the seal installation cavity, preferably, a protective gas box is fixedly connected in the seal installation cavity, and the protective gas box is communicated with the seal installation cavity through an exhaust pipe.

In order to facilitate the control of gas circulation, preferably, a sliding cavity is formed in the protective gas box, a sealing plate is connected in the sliding cavity in a sliding mode, a threaded rod is connected to the first installation box in a rotating mode and is connected to the sealing plate in a rotating mode, an exhaust pipe is fixedly connected to the top of the sliding cavity, and the exhaust pipe is located in the center of the sliding cavity.

In order to fix the threaded rod conveniently, a protective box is preferably fixedly connected to the outer wall of the first installation box.

For the convenience of making gas circulation, preferably, power chamber and heat dissipation chamber have been seted up to the bottom of first install bin, and power chamber and heat dissipation chamber are linked together, the heat dissipation intracavity is equipped with the heat dissipation oil, the first piston barrel of power intracavity fixedly connected with, the output and the protective gas case of first piston barrel pass through the second trachea and link to each other, just the second trachea is located the heat dissipation intracavity and is the spiral, sealed installation cavity links to each other through first trachea with the input of first piston barrel.

In order to facilitate evacuation of the non-protective gas in the seal installation cavity, preferably, the top of the first piston cylinder is fixedly connected with a second piston cylinder, an input end of the second piston cylinder is connected with the first air pipe through a third air pipe, and an output end of the second piston cylinder is communicated with the power cavity.

In order to facilitate heat dissipation of the gas, preferably, the heat dissipation cavity is rotatably connected with an installation shaft, and the installation shaft is fixedly connected with fan blades.

In order to facilitate heat dissipation of the heat dissipation oil, preferably, a third piston cylinder is fixedly connected in the heat dissipation cavity, an output end of the third piston cylinder is fixedly connected with a first heat dissipation oil pipe, an output end of the first heat dissipation oil pipe is fixedly connected with an atomizing nozzle, an input end of the third piston cylinder is fixedly connected with a second heat dissipation oil pipe, and an input end of the second heat dissipation oil pipe extends to the bottom of the heat dissipation oil.

For the convenience of piston cylinder and flabellum work, preferably, fixedly connected with motor in the power cavity, the output fixedly connected with drive shaft of motor, the lateral wall rotation in power cavity is connected with the pivot, the bottom fixedly connected with eccentric wheel of pivot, the drive end of third piston cylinder rotates and connects on the eccentric wheel, pivot and installation axle are organized through gear shaft transmission and are rotated with the drive shaft and link to each other, be equipped with first bent axle and second bent axle in the drive shaft, the drive end rotation of first piston cylinder is connected on first bent axle, the drive end rotation of second piston cylinder is connected on the second bent axle, first bent axle all is connected in the drive shaft through the ratchet subassembly with the second bent axle, and the thorn of two sets of ratchet subassemblies is to opposite.

Compared with the prior art, the invention provides a cable branch box, which has the following beneficial effects: 1. this cable branch box makes second binding post and first binding post outage, makes junction box and other branch lines keep electric connection, carries out the wiring on second binding post, then makes plug and first binding post circular telegram through the lead screw to make the branch line and the junction box circular telegram of new access, thereby prevent that the staff from electrocuting under the condition of not cutting off the power supply, thereby ensured staff's life safety.

2. This cable branch box is through the air evacuation with the seal installation intracavity to pack protective gas in the seal installation chamber, take out the required oxygen of flame burning, and because of the oxygen evacuation, can effectually prevent that the inside electric elements of seal installation chamber from by the oxidation, utilize the inactive nature of protective gas simultaneously, slow down electric elements's ageing, thereby prolong the life of this branch box.

3. This cable branch box, through making protective gas at sealed installation cavity, first trachea, first piston cylinder, the second trachea, circulation flow between protective gas case and the blast pipe, utilize protective gas to absorb the heat that sealed installation intracavity electrical component produced, and utilize the heat dissipation oil absorption protective gas's of heat dissipation intracavity heat, and utilize third piston cylinder to dispel the heat to the heat dissipation oil, rotate the heat dissipation to the heat dissipation oil with higher speed and blow off the install bin with steam through the flabellum, realize the circulation heat dissipation to sealed installation intracavity portion, prevent that sealed installation intracavity portion's electrical component from damaging because of the high temperature.

The invention disconnects the corresponding plug from the corresponding first connecting terminal, disconnects the second connecting terminal, connects the branch line to the second connecting terminal, inserts the plug into the first connecting terminal after completing the power connection, and connects the second connecting terminal to the power supply, thereby avoiding the trouble to the user on the corresponding circuit, and simultaneously improving the safety of the power connection.

Drawings

Fig. 1 is a front sectional view of a cable branch box according to the present invention;

fig. 2 is a schematic structural diagram of a cable branch box mounting box according to the present invention;

fig. 3 is an exploded view of a cable branch box mounting box according to the present invention;

fig. 4 is a schematic structural view of a portion a of fig. 1 of a cable branch box according to the present invention;

fig. 5 is a schematic structural view of a portion B in fig. 1 of a cable branch box according to the present invention;

fig. 6 is a schematic structural diagram of a cable branch box crankshaft according to the present invention.

In the figure: 1. a first installation box; 101. sealing the installation cavity; 102. a second installation box; 2. a junction box; 201. a power connection hole; 202. a first connection terminal; 3. mounting a box; 301. an insulating tube; 3011. a plug; 3012. a conductive joint; 302. a screw rod; 303. a second connection terminal; 304. a conductive sheet; 305. a conductive wire; 306. folding the sealing cover; 4. a shielding gas box; 401. a sealing plate; 402. a threaded rod; 404. a protective box; 405. an exhaust pipe; 406. a slide chamber; 5. a motor; 501. a drive shaft; 502. a first crankshaft; 503. a second crankshaft; 601. a first piston cylinder; 602. a second piston cylinder; 603. a first air pipe; 604. a second air pipe; 605. a third air pipe; 606. a third piston cylinder; 607. a first heat sink oil pipe; 608. an atomizing spray head; 609. a second heat sink tubing; 7. a gear shaft transmission group; 704. a rotating shaft; 705. an eccentric wheel; 8. installing a shaft; 801. a fan blade.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example (b): referring to fig. 1-6, a cable branch box includes first install bin 1, has seted up sealed installation cavity 101 in first install bin 1, and sealed installation cavity 101 is totally sealed, still includes: the second installation box 102 is fixedly connected in the sealed installation cavity 101, and the installation box 3 is fixedly connected in the second installation box 102; the insulating tube 301 is connected to the mounting box 3 in a sliding manner, and one end of the insulating tube 301, which is positioned outside the mounting box 3, is fixedly connected with a plug 3011; a conductive plate 304 fixedly connected to the inner wall of the bottom of the mounting box 3; a conductive joint 3012 fixedly connected to the bottom of the insulating tube 301; a second connection terminal 303 fixedly connected to the bottom of the mounting box 3, the second connection terminal 303 being electrically connected to the conductive plate 304, the conductive connector 3012 sliding on the conductive plate 304 and being electrically connected to the conductive plate 304, the conductive connector 3012 being electrically connected to the plug 3011 through a conductive wire 305; a screw rod 302 connected to the insulating tube 301 in a rotating manner, wherein the screw rod 302 is in threaded connection with the mounting box 3; the junction box 2 is fixedly connected in the sealed installation cavity 101; a first connection terminal 202 fixedly connected to the connection box 2, corresponding to the plug 3011; and the power connection hole 201 is fixedly connected to the outer wall of the junction box 2.

Fixing the cable on the electric connection hole 201, sealing the sealed installation cavity 101, evacuating the gas in the sealed installation cavity 101, filling protective gas, wherein the protective gas is inert gas, such as ammonia gas and nitrogen gas, using the inert gas to slow down the aging speed of the cable, the electric wire and the electric elements in the connection box 2, when a new branch line is connected, connecting the branch line to the corresponding second connection terminal 303, rotating the screw rod 302, using the screw rod 302 to slide the insulating tube 301 on the installation box 3 by using the screw rod 302, inserting the plug 3011 into the corresponding first connection terminal 202, conducting the current on the cable to the first connection terminal 202 through the connection box 2, conducting the current to the conducting wire 305 through the first connection terminal 202 and the plug 3011, then conducting the current to the conducting sheet 304 through the conducting wire 305, then conducting the current to the second connection terminal 303, and finally conducting the current to the branch line through the second connection terminal 303, the branch line is electrified, the mounting box 3 and the screw rod 302 are both made of insulating materials such as glass, the device eliminates oxygen required by flame combustion by evacuating air in the sealed mounting cavity 101, thereby preventing spontaneous combustion in the sealed mounting cavity 101, the second wiring terminal 303 and the first wiring terminal 202 are powered off, the junction box 2 is electrically connected with other branch lines, a new branch line is conveniently added on the second wiring terminal 303, then the plug 3011 and the first wiring terminal 202 are electrified through the screw rod 302, so that the newly connected branch line and the junction box 2 are powered on, and therefore, electric shock of workers is prevented under the condition of no power off, and the life safety of the workers is ensured.

Referring to fig. 1, 3 and 5, a folding sealing cover 306 is arranged in the mounting box 3, and two ends of the folding sealing cover 306 are respectively fixedly connected with the insulating tube 301 and the inner wall of the mounting box 3.

The folded sealing cover 306 can contract or extend along the sliding direction of the insulating tube 301, so that the second mounting box 102 and the sealing mounting cavity 101 are completely sealed, the leakage of the protective gas is prevented, and the reduction of the protection of the electric elements in the sealing mounting cavity 101 is avoided.

Referring to fig. 1, a shielding gas box 4 is fixedly connected to the inside of the hermetic container 101, and the shielding gas box 4 is communicated with the hermetic container 101 through an exhaust pipe 405.

The protective gas is stored through the protective gas box 4, so that the sealed installation cavity 101 is convenient to open for maintaining the internal electrical elements.

Referring to fig. 1, a sliding cavity 406 is formed in the shielding gas box 4, a sealing plate 401 is slidably connected in the sliding cavity 406, a threaded rod 402 is rotatably connected to the first mounting box 1, the threaded rod 402 is rotatably connected to the sealing plate 401, an exhaust pipe 405 is fixedly connected to the top of the sliding cavity 406, and the exhaust pipe 405 is located at the center of the sliding cavity 406.

Through rotating threaded rod 402, utilize the screw thread principle, threaded rod 402 makes sealing plate 401 slide in sliding cavity 406, controls sealing plate 401's position to the break-make of control blast pipe 405, and then the circulation of convenient control protective gas, the control protective gas case 4 of being convenient for is with inside storage of gaseous income and with gaseous two kinds of modes that make gas cycle in the first install bin 1 switch between.

Referring to fig. 1, a protective box 404 is fixedly connected to an outer wall of the first installation case 1.

Threaded rod 402 is isolated by a protective box 404, preventing non-workers from rotating threaded rod 402.

Referring to fig. 1, 5 and 6, a power cavity and a heat dissipation cavity are formed at the bottom of a first mounting box 1, the power cavity is communicated with the heat dissipation cavity, heat dissipation oil is disposed in the heat dissipation cavity, a first piston cylinder 601 is fixedly connected in the power cavity, an output end of the first piston cylinder 601 is connected with a protective gas box 4 through a second air pipe 604, the second air pipe 604 is positioned in the heat dissipation cavity and is spiral, a seal mounting cavity 101 is connected with an input end of the first piston cylinder 601 through a first air pipe 603, a top of the first piston cylinder 601 is fixedly connected with a second piston cylinder 602, an input end of the second piston cylinder 602 is connected with the first air pipe 603 through a third air pipe 605, an output end of the second piston cylinder 602 is communicated with the power cavity, a mounting shaft 8 is rotatably connected in the heat dissipation cavity, a fan blade 801 is fixedly connected on the mounting shaft 8, a third piston cylinder 606 is fixedly connected in the heat dissipation cavity, an output end of the third piston cylinder 606 is fixedly connected with a first heat dissipation oil pipe 607, the output end of the first heat dissipation oil pipe 607 is fixedly connected with an atomizing spray head 608, the input end of the third piston cylinder 606 is fixedly connected with a second heat dissipation oil pipe 609, the input end of the second heat dissipation oil pipe 609 extends to the bottom of the heat dissipation oil, the power cavity is internally and fixedly connected with a motor 5, the output end of the motor 5 is fixedly connected with a driving shaft 501, the side wall of the power cavity is rotatably connected with a rotating shaft 704, the bottom of the rotating shaft 704 is fixedly connected with an eccentric wheel 705, the driving end of the third piston cylinder 606 is rotatably connected to the eccentric wheel 705, the rotating shaft 704 and a mounting shaft 8 are rotatably connected with the driving shaft 501 through a gear shaft transmission set 7, the driving shaft 501 is provided with a first crankshaft 502 and a second crankshaft 503, the driving end of the first piston cylinder 601 is rotatably connected to the first crankshaft 502, the driving end of the second piston cylinder 602 is rotatably connected to the second crankshaft 503, the first crankshaft 502 and the second crankshaft 503 are both connected to the driving shaft 501 through a ratchet assembly, and the ratchet directions of the two groups of ratchet assemblies are opposite.

Starting the motor 5, the motor 5 rotates the driving shaft 501, when the driving shaft 501 rotates clockwise, the driving shaft 501 rotates the first crankshaft 502, the first crankshaft 502 operates the first piston cylinder 601, the first piston cylinder 601 sucks the protective gas in the seal installation cavity 101 through the first gas pipe 603, then the second gas pipe 604 is sent into the protective gas box 4, then the protective gas is discharged into the seal installation cavity 101 through the exhaust pipe 405, the protective gas flows circularly, the protective gas absorbs the heat in the seal installation cavity 101, when the protective gas with heat moves into the heat dissipation cavity, the heat dissipation oil in the heat dissipation cavity absorbs the heat in the protective gas to cool the protective gas, so that the electric elements in the seal installation cavity 101 are dissipated heat, the electric elements are prevented from spontaneous combustion due to overhigh temperature, and the driving shaft 501 rotates the installation shaft 8 through the gear shaft transmission set 7 and operates the third piston cylinder 606, the third piston cylinder 606 absorbs the heat dissipating oil in the heat dissipating cavity, and then the heat dissipating oil is sprayed out through the atomizing nozzle 608 to increase the heat dissipating surface of the heat dissipating oil, so as to accelerate the heat dissipation of the heat dissipating oil, the mounting shaft 8 enables the fan blade 801 to rotate, the fan blade 801 absorbs the external air and blows the heat dissipated to the heat dissipating oil, the heat in the heat dissipating oil is blown away, the heat dissipation of the heat dissipating oil is performed, the heat dissipation of the protective gas can not be performed due to the temperature balance between the heat dissipating oil and the protective gas, when the inside of the sealed installation cavity 101 needs to be maintained, the threaded rod 402 is rotated to enable the sealing plate 401 to block the exhaust pipe 405, the protective gas is retracted into the protective gas box 4 through the first piston cylinder 601 for storage, then the air inlet pipe on the side wall of the first installation box 1 is opened to enable the external air to enter the sealed installation cavity 101, so that a worker can conveniently enter the sealed installation cavity 101 to maintain the electric elements in the sealed installation cavity 101, after the maintenance is completed, the air inlet pipe is closed, the driving shaft 501 rotates anticlockwise through the motor 5, the driving shaft 501 enables the second piston cylinder 602 to work through the second crankshaft 503, the second piston cylinder 602 sucks air in the sealed installation cavity 101 through the third air pipe 605 and the first air pipe 603 and then discharges the air into the power cavity, after the air is discharged, the exhaust pipe 405 is communicated with the protective gas box 4, protective gas in the protective gas box 4 is discharged into the sealed installation cavity 101, then the driving shaft 501 rotates clockwise, the protective gas flows circularly and radiates the inside of the sealed installation cavity 101, the input ends and the output ends of three groups of piston cylinders of the first piston cylinder 601, the second piston cylinder 602 and the third piston cylinder 606 are respectively provided with a one-way valve, in order to prevent the radiating oil from being insufficient due to the volatilization of the radiating oil, a radiating oil level sensor is arranged in the radiating cavity, the radiating cavity is connected with a radiating oil pipeline, a control valve is arranged on the radiating oil port, and utilize level sensor control valve's break-make, after the heat dissipation oil level reduces to a certain extent, the controller intercommunication adds certain heat dissipation oil to the heat dissipation intracavity, and it does not do not need to describe here again, the device is through making the protective gas circulation flow and absorbing the heat in seal installation cavity 101, absorbs protective gas's heat through the heat dissipation oil, then cools down the heat dissipation oil through flabellum 801, reaches the heat dissipation balance, reduces the temperature in seal installation cavity 101, and then prevents that the electrical component in seal installation cavity 101 from taking place the spontaneous combustion because of the high temperature.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.