阅读说明：本技术 一种具有负压防渗水结构的汽车变压器 (Automobile transformer with negative pressure anti-seepage structure ) 是由 刘德明 于 2021-10-27 设计创作，主要内容包括：本发明公开了一种具有负压防渗水结构的汽车变压器,属于汽车变压器领域,一种具有负压防渗水结构的汽车变压器,通过将金属接电板插设在接电卡簧的内部,对电连接进行转接,无需将线束直接连接在外壳内部,有利于保障接线位置处的防水密封性,同时,通过将负压形成罐与外壳之间相连通,借助于负压形成罐内部气压降低,同步降低外壳内部的气压,在压差作用下提高绝缘盖板覆盖在插接口上的紧密度,从而有效提升该装置整体密封性,有效的避免外界雨水进入该装置内部,避免外壳内部受雨水侵蚀损坏。(The invention discloses an automobile transformer with a negative pressure water seepage prevention structure, which belongs to the field of automobile transformers, and is characterized in that a metal power connection plate is inserted into a power connection clamp spring to be connected in a switching manner, a wire harness is not required to be directly connected into a shell, the waterproof sealing performance at a wiring position is favorably ensured, meanwhile, a negative pressure forming tank is communicated with the shell, the air pressure in the tank is reduced by means of negative pressure, the air pressure in the shell is synchronously reduced, and the tightness of an insulation cover plate covering a plug-in port is improved under the action of pressure difference, so that the integral sealing performance of the device is effectively improved, external rainwater is effectively prevented from entering the device, and the interior of the shell is prevented from being corroded and damaged by rainwater.)

1. The utility model provides an automobile transformer with negative pressure prevention of seepage water structure, includes shell (1), its characterized in that: the circuit board (101) is fixedly installed inside the shell (1), the right end of the circuit board (101) is uniformly fixed with a plurality of power connection clamping springs (102), the top of the shell (1) is provided with a plurality of power connection interfaces (103) positioned above the power connection clamping springs (102), the top of each power connection interface (103) is covered with sealing rubber (104), an insulating cover plate (2) covers the sealing rubber (104), a plurality of vertically arranged metal power connection plates (201) are uniformly fixed inside the insulating cover plate (2), the metal power connection plates (201) are respectively inserted into the corresponding power connection clamping springs (102), a plurality of mounting seats (202) are uniformly fixed at the edge positions of the insulating cover plate (2), bolts (203) are movably inserted into the mounting seats (202), a plurality of nuts (204) corresponding to the mounting seats (202) are uniformly fixed at the top of the shell (1), and a plurality of nuts (204) and bolt (203) threaded connection who corresponds, the outside of shell (1) is fixed with connector (3), and connector (3) are linked together through the inside of communicating pipe (301) with shell (1), there is the valve piece inside of communicating pipe (301) through spring coupling, the internal connection of connector (3) has the negative pressure to form jar (302), the intermediate position department fixed mounting that the negative pressure formed jar (302) has diaphragm (304), the striking piece (305) that the appearance was sharp-pointed structure has been placed to the inside that the negative pressure formed jar (302).

2. The automobile transformer with the negative-pressure anti-seepage structure according to claim 1, wherein: the top of the power connection clamping spring (102) is arranged to be an open structure which is opened outwards.

3. The automobile transformer with the negative-pressure anti-seepage structure according to claim 1, wherein: the inside fixed mounting of interface (103) connects a plurality of guide cover plate (105) that electric jump ring (102) corresponds, and the appearance of every guide cover plate (105) all sets up to funnel structure, a plurality of metal connects electric board (201) respectively the activity to wear to wipe inside corresponding guide cover plate (105).

4. The automobile transformer with the negative-pressure anti-seepage structure according to claim 1, wherein: the outer side of each bolt (203) is sleeved with a supporting spring (205) located above the mounting seat (202), and the upper end and the lower end of each supporting spring (205) are respectively provided with two gaskets (206) movably sleeved on the outer side of each bolt (203).

5. The automobile transformer with the negative-pressure anti-seepage structure according to claim 1, wherein: communicating pipe (301) are close to the inside fixed mounting in one end of connector (3) has check valve (303), negative pressure forms jar (302) and connector (3) threaded connection.

6. The automobile transformer with the negative-pressure anti-seepage structure according to claim 1, wherein: the outer end wall of shell (1) is last evenly to be fixed with a plurality of heating panels (4) for the thin slice structure, and the edges and corners department of every heating panel (4) is the chamfer setting of mellow structure.

7. The automobile transformer with the negative-pressure anti-seepage structure according to claim 1, wherein: insulating oil is filled in the shell (1), a plurality of heat exchange tubes (5) with U-shaped structures are fixedly mounted on the outer end wall of the shell (1), and two ends of each heat exchange tube (5) are communicated with the inside of the shell (1).

8. The automobile transformer with the negative-pressure anti-seepage structure according to claim 1, wherein: the pressure relief port is formed in the outer end wall of the shell (1), the inside of the pressure relief port is connected with the valve plug (6) through threads, and a groove of a regular hexagon structure is formed in the outer end wall of the valve plug (6).

Technical Field

The invention relates to the field of automobile transformers, in particular to an automobile transformer with a negative-pressure anti-seepage structure.

Background

The automobile transformer is a common electrical element in an automobile circuit, and the voltage in the circuit is far away from the electromagnetic induction to be converted and regulated, so that the voltage in the automobile circuit meets the actual working requirement.

The circuit connection of car transformer is direct connection usually inside the equipment, and this has just led to most car transformers to be in unsealed state, and inside external rainwater passed through the shell and can permeate into the transformer, and for avoiding the rainwater to cause the erosion damage to car transformer, can install car transformer in the inside higher position department of automobile body among the prior art usually.

Although the probability of automobile transformer intaking can be reduced through the mode of raising transformer mounted position, under extremely abominable weather, if bubble water, rainfall are too big, wash the vehicle etc. all probably lead to not enough sealed automobile transformer inside intaking, cause transformer internal damage easily, can cause dangerous accidents such as getting on fire even when serious.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide an automobile transformer with a negative-pressure anti-seepage structure, which can realize sealed power connection treatment on the electric connection position of the automobile transformer, and enable the power connection position to be tightly attached together through the adsorption effect of internal and external pressure difference in negative pressure, thereby effectively ensuring the overall sealing property of the automobile transformer and reducing the anti-seepage performance of the automobile transformer to a certain extent.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

The utility model provides an auto transformer with negative pressure prevention of seepage water structure, which comprises an outer shell, the inside fixed mounting of shell has the circuit board, and the right-hand member of circuit board evenly is fixed with a plurality of electricity jump rings that connect, the interface that is located a plurality of electricity jump rings tops that connect is seted up at the top of shell, and the top of interface covers there is sealing rubber, sealing rubber's top covers has insulating cover plate, and insulating cover plate's inside evenly is fixed with the metal of a plurality of vertical settings and connects the electroplax, a plurality of metals connect the electroplax to insert respectively and establish a plurality of inside of connecing the electricity jump ring that correspond, the outside of shell is fixed with the connector, and the connector is linked together through the inside of communicating pipe and shell, there is the valve piece communicating pipe inside through spring coupling, the internal connection of connector has the negative pressure to form the jar.

Further, the top of the power connection clamp spring is arranged to be an open structure which is opened outwards.

Furthermore, a plurality of guide cover plates corresponding to the power connection clamp springs are fixedly installed inside the plug interface, the appearance of each guide cover plate is of a funnel structure, and a plurality of metal power connection plates are movably penetrated and wiped inside the corresponding guide cover plates respectively.

Furthermore, a plurality of mounting seats are uniformly fixed at the edge positions of the insulating cover plate, bolts are movably inserted into the mounting seats, a plurality of nuts corresponding to the mounting seats are uniformly fixed at the top of the shell, and the nuts are in threaded connection with the corresponding bolts.

Furthermore, the outer sides of the bolts are all sleeved with supporting springs located above the mounting seat, and the upper end and the lower end of each supporting spring are provided with two gaskets movably sleeved on the outer sides of the bolts.

Furthermore, a one-way valve is fixedly arranged inside one end of the communicating pipe close to the connector, and the negative pressure forming tank is in threaded connection with the connector.

Furthermore, a diaphragm is fixedly arranged at the middle position of the negative pressure forming tank, and an impact block with a sharp-pointed structure is placed in the negative pressure forming tank.

Furthermore, a plurality of heat dissipation plates with sheet structures are uniformly fixed on the outer end wall of the shell, and the corners of each heat dissipation plate are chamfered with round structures.

Furthermore, the inside of the shell is filled with insulating oil, a plurality of heat exchange tubes in a U-shaped structure are fixedly mounted on the outer end wall of the shell, and two ends of each heat exchange tube are communicated with the inside of the shell.

Furthermore, a pressure relief opening is formed in the outer end wall of the shell, a valve plug is connected to the inside of the pressure relief opening through threads, and a groove of a regular hexagon structure is formed in the outer end wall of the valve plug.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) this scheme is through connecing the metal to connect the electric plate to insert and establish the inside of connecing the electricity jump ring, connect the electricity and carry out the switching, need not inside the shell with pencil lug connection, be favorable to guaranteeing the waterproof sealing nature of wiring position department, and simultaneously, through being linked together between jar and the shell with the formation of negative pressure, form the inside atmospheric pressure reduction of jar with the help of the negative pressure, reduce the inside atmospheric pressure of shell in step, improve the compactness of insulating cover plate cover on the interface under the pressure differential effect, thereby effectively promote the device overall tightness, effectually avoid outside rainwater to get into inside the device, avoid the inside rainwater erosion damage that receives of shell.

(2) Set up to outside open structure through the top that will connect the electricity jump ring, can guide to inserting metal electricity connection board down, make the metal connect the electricity board can stably insert to the electricity jump ring that connects that corresponds inside, avoid appearing connecing the situation that electricity jump ring and metal connect the butt joint deviation to appear between the electricity board, the effectual stability when the device is connected and is used of having ensured, through with a plurality of guide cover plate correspondences that are the funnel structure install the inside at the interface, can tentatively guide to inserting metal electricity connection board down, can connect the electricity board to a plurality of metals to restrict simultaneously, avoid the metal to connect the electricity board and connect and appear too big deviation when butt joint between the jump ring, the effectual fast stability when having ensured the device grafting metal connects the electricity board.

(3) Through vertically inserting the bolt inside establishing the fixed mount pad of insulating cover plate border position department, with the help of the threaded connection between bolt and the nut, can fix a position insulating cover plate's position, avoid appearing too big deviation between insulating cover plate and the interface, structural stability when also can ensure insulating cover plate closing cap interface simultaneously, be favorable to promoting the device's water-proof effects, establish the outside at the bolt through supporting spring cover, support between bolt and the mount pad, can avoid the bolt to twist and dismantle inconveniently when tight and lead to the later stage maintenance, keep apart through being provided with the gasket in supporting spring's upper and lower position department, can avoid direct conflict between supporting spring and bolt and the nut, be favorable to avoiding the bolt and the nut serious wearing and tearing when dismantling repeatedly, be convenient for prolong the device's life.

(4) Through forming the inside of jar threaded connection communicating pipe with the negative pressure for rotatory negative pressure forms the jar and can installs and dismantle it, makes the device can use repeatedly many times, is favorable to resources are saved, through installing the inside at communicating pipe with the check valve, makes only can carry out one-way switch on in the communicating pipe, makes the negative pressure form the jar the inside negative pressure state that still can keep of shell when dismantling, the effectual stability that has ensured that the device carries out sealed through the negative pressure.

(5) Through forming the inside of jar with diaphragm fixed mounting at the negative pressure, can be so that the negative pressure forms jar inside and cuts apart into two independent spaces, sets up to sharp-pointed structure through the appearance with the striking piece, with the help of the striking that produces when rocking for the striking piece punctures the diaphragm fast, thereby effectively controls the reaction, is favorable to guaranteeing the nimble stability when the device uses.

(6) Through evenly fixing the heating panel that the appearance is the sheet structure on the outer end wall of shell, can effectual promotion shell and external area of contact to promote the device's radiating effect, simultaneously, through the chamfer angle that sets up the edges and corners of heating panel into the mellow and soft structure, can effectually avoid the heating panel fish tail other people, the effectual safety in utilization that has ensured the device.

(7) Through evenly fixed the intercommunication with a plurality of hot exchange pipes for the U-shaped structure on the outer end wall of shell to there is insulating oil in the inside packing of shell, with the help of the principle of hot oil come-up, can be so that hot oil carries out the heat replacement between hot exchange pipe and shell, further strengthened the radiating effect of the device during operation, simultaneously, through filling insulating oil in the inside of shell, further promoted the sealed waterproof nature of the device under the negative pressure effect.

(8) Through seting up the pressure release mouth on the outer end wall of shell to carry out the shutoff through valve plug threaded connection to the pressure release mouth, be favorable to the balanced shell internal and external pressure differential when the device maintains, thereby be favorable to this to take off insulating cover fast, through seting up the recess of regular hexagon structure on the outer end wall of valve plug, can carry out the application of force to the valve plug with the help of the hexagonal spanner, the effectual simple operation nature that has promoted the device.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a perspective view of the present invention;

FIG. 3 is a front view of the present invention;

FIG. 4 is a schematic view of the structure at A in FIG. 3;

FIG. 5 is a front cross-sectional view of the present invention;

FIG. 6 is a schematic view of the structure at B in FIG. 5;

FIG. 7 is a top view of the present invention;

FIG. 8 is a side cross-sectional view of the present invention;

FIG. 9 is a schematic structural view of the connection between the power connection clamp spring and the metal power connection plate according to the present invention;

fig. 10 is a side view of fig. 9.

The reference numbers in the figures illustrate:

1. a housing; 101. a circuit board; 102. connecting a power connection snap spring; 103. an interface; 104. sealing rubber; 105. a guide hood plate; 2. an insulating cover plate; 201. a metal contact plate; 202. a mounting seat; 203. a bolt; 204. a nut; 205. a support spring; 206. a gasket; 3. a connector; 301. a communicating pipe; 302. a negative pressure forming tank; 303. a one-way valve; 304. a diaphragm; 305. an impact block; 4. a heat dissipation plate; 5. a heat exchange tube; 6. a valve plug.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-10, an automotive transformer with a negative pressure anti-seepage structure includes a housing 1, a circuit board 101 is fixedly mounted inside the housing 1, a plurality of power connection snap springs 102 are uniformly fixed at the right end of the circuit board 101, a socket 103 located above the power connection snap springs 102 is formed at the top of the housing 1, a sealing rubber 104 covers the top of the socket 103, an insulating cover plate 2 covers the sealing rubber 104, a plurality of vertically arranged metal power connection plates 201 are uniformly fixed inside the insulating cover plate 2, and the plurality of metal power connection plates 201 are respectively inserted into the corresponding power connection snap springs 102.

Referring to fig. 9-10, the top of the power connection snap spring 102 is configured to be an open structure which opens outward, when the device works, the metal power connection plate 201 is inserted downward into the power connection snap spring 102, and the metal power connection plate 201 is in contact with the power connection snap spring 102 to connect the power connection, so that the device completes the wiring operation outside the housing 1 when in use, and the top of the power connection snap spring 102 is configured to be an open structure which opens outward, so that the metal power connection plate 201 which is inserted downward can be guided, the metal power connection plate 201 can be stably inserted into the corresponding power connection snap spring 102, the situation of butt joint deviation between the power connection snap spring 102 and the metal power connection plate 201 is avoided, and the stability of the device during connection and use is effectively guaranteed.

Referring to fig. 1, a plurality of guide cover plates 105 corresponding to the power connection snap springs 102 are fixedly installed inside the socket 103, each guide cover plate 105 is configured to have a funnel shape, and a plurality of metal power connection plates 201 are movably inserted into the corresponding guide cover plates 105, when the device is in operation, the plurality of guide cover plates 105 are installed inside the socket 103, and the plurality of guide cover plates 105 correspond to the plurality of power connection snap springs 102, respectively, so that the guide cover plates 105 can primarily guide the inserted metal power connection plates 201, so that the metal power connection plates 201 can be rapidly inserted into the corresponding power connection snap springs 102, the plurality of guide cover plates 105 having the funnel shape are installed inside the socket 103, thereby primarily guiding the downwardly inserted metal power connection plates 201, and simultaneously limiting the plurality of metal power connection plates 201, thereby preventing an excessive deviation from occurring when the metal power connection plates 201 and the power connection snap springs 102 are in butt joint, the device effectively guarantees the rapid stability of the device when the metal electric plate 201 is inserted.

Referring to fig. 3-6, a plurality of mounting seats 202 are uniformly fixed at the edge position of the insulating cover plate 2, and a bolt 203 is movably inserted into each mounting seat 202, a plurality of nuts 204 corresponding to the mounting seats 202 are uniformly fixed at the top of the housing 1, and the plurality of nuts 204 are in threaded connection with the corresponding bolts 203, when the device works, the bolts 203 are inserted into the mounting seats 202, and the bottoms of the bolts are in threaded connection with the nuts 204, so as to realize the positioning and mounting of the insulating cover plate 2, avoid the large dislocation deviation between the insulating cover plate 2 and the inserting port 103, position of the insulating cover plate 2 can be positioned by vertically inserting the bolts 203 into the mounting seats 202 fixed at the edge position of the insulating cover plate 2, avoid the large deviation between the insulating cover plate 2 and the inserting port 103 by virtue of the threaded connection between the bolts 203 and the nuts 204, and simultaneously ensure the structural stability when the insulating cover plate 2 covers the inserting port 103, is favorable for improving the waterproof effect of the device.

Referring to fig. 4, the outer sides of the plurality of bolts 203 are all sleeved with the supporting springs 205 located above the mounting base 202, and the upper and lower ends of each supporting spring 205 are provided with two gaskets 206 movably sleeved on the outer sides of the bolts 203, when the device works, the bolts 203 are screwed into the nuts 204 in a rotating manner, the bolts 203 can be prevented from being screwed into the nuts 204 too tightly by the blocking of the supporting springs 205, the supporting springs 205 are sleeved on the outer sides of the bolts 203 to support the bolts 203 and the mounting base 202, so that the inconvenience in later maintenance caused by the over-tightening of the bolts 203 can be avoided, the convenience in use of the device is effectively guaranteed, the supporting springs 205 are isolated by the gaskets 206 arranged at the upper and lower positions of the supporting springs 205, the direct interference between the supporting springs 205 and the bolts 203 and the nuts 204 can be avoided, and the wear of the bolts 203 and the nuts 204 is avoided from being serious during repeated disassembly, the service life of the device is convenient to prolong.

Referring to fig. 8, a connector 3 is fixed on the outer side of a housing 1, the connector 3 is communicated with the inside of the housing 1 through a communication pipe 301, the inside of the communication pipe 301 is connected with a valve block through a spring, the inside of the connector 3 is connected with a negative pressure forming tank 302, a check valve 303 is fixedly installed inside one end of the communication pipe 301 close to the connector 3, the negative pressure forming tank 302 is connected with the connector 3 through a screw thread, when the device is operated, by screwing the negative pressure forming tank 302 to the inside of the communication pipe 301, so that the rotary negative pressure forming tank 302 can be mounted and dismounted, the device can be used repeatedly, resources are saved, by installing check valve 303 inside communication pipe 301, only one-way communication is possible in communication pipe 301, the negative pressure forming tank 302 can still keep a negative pressure state inside the shell 1 when being detached, and the stability of the device for sealing through negative pressure is effectively guaranteed.

Referring to fig. 8, a diaphragm 304 is fixedly installed at the middle position of the negative pressure forming tank 302, an impact block 305 having a sharp-pointed shape is placed inside the negative pressure forming tank 302, when the device is in operation, the inside of the negative pressure forming tank 302 is divided into two parts by the diaphragm 304, wherein one part of the space is filled with clear lime water, the other part of the space is filled with carbon dioxide, when the negative pressure forming tank 302 is shaken, the impact block 305 moves inside the negative pressure forming tank 302 to impact the diaphragm 304, so that the diaphragm 304 is broken, the clear lime water inside the negative pressure forming tank 302 reacts with the carbon dioxide, the air pressure inside the negative pressure forming tank 302 is reduced by absorbing the carbon dioxide, thereby forming a negative pressure environment inside the housing 1, the diaphragm 304 is fixedly installed inside the negative pressure forming tank 302, so that the inside of the negative pressure forming tank 302 is divided into two independent spaces, through setting the appearance of striking piece 305 to sharp-pointed structure, with the help of the striking that produces when rocking for striking piece 305 punctures diaphragm 304 fast, thereby effectively controls the reaction, is favorable to guaranteeing the nimble stability when the device uses.

Referring to fig. 1 and 5, when the device works, a worker puts a proper amount of clear lime water into the negative pressure forming tank 302, the clear lime water reacts with carbon dioxide in the negative pressure forming tank 302 to absorb the carbon dioxide in the negative pressure forming tank 302, so that the air pressure in the negative pressure forming tank 302 is reduced, the air pressure in the shell 1 is synchronously reduced along with the air pressure in the negative pressure forming tank 302 due to the fact that the negative pressure forming tank 302 is communicated with the shell 1 through the communicating pipe 301, the insulating cover plate 2 is tightly adsorbed above the socket 103 under the action of pressure difference, the sealing rubber 104 is squeezed and deformed through tight contact between the insulating cover plate 2 and the socket 103, and the sealing rubber is filled in a gap at the joint between the insulating cover plate 2 and the socket 103, and the sealing performance of the device is guaranteed.

The metal electric connection plate 201 is inserted into the electric connection clamp spring 102 to transfer the electric connection, so that a wire harness is not required to be directly connected into the shell 1, the waterproof sealing performance at the wiring position is favorably ensured, meanwhile, by communicating the negative pressure forming tank 302 with the casing 1, the air pressure inside the negative pressure forming tank 302 is reduced, the air pressure inside the casing 1 is reduced simultaneously, the tightness of the insulating cover plate 2 covering the interface 103 is improved under the action of the pressure difference, thereby effectively improving the whole sealing performance of the device, effectively preventing external rainwater from entering the device, preventing the inside of the shell 1 from being corroded and damaged by the rainwater, by elastically and slidably connecting the valve block inside the communicating pipe 301, can ensure that shell 1 and negative pressure form jar 302 inside when atmospheric pressure communicates, avoid the negative pressure to form the material in jar 302 and enter into inside the shell 1, be favorable to guaranteeing the device's job stabilization nature.

Please refer to fig. 1, a plurality of heating panels 4 that are the thin slice structure are evenly fixed on the outer end wall of the shell 1, and the edge of each heating panel 4 is the chamfer setting of the round structure, the device during operation, through evenly fixing the heating panel 4 that the appearance is the thin slice structure on the outer end wall of the shell 1, can effectually promote shell 1 and external area of contact, thereby promote the device's radiating effect, and simultaneously, the edge through with heating panel 4 sets up the chamfer to the round structure, can effectually avoid heating panel 4 fish tail other people, the effectual safety in utilization who ensures the device.

Referring to fig. 2-3 and 5, the interior of the housing 1 is filled with insulating oil, the outer end wall of the housing 1 is fixedly provided with a plurality of heat exchange tubes 5 having a U-shaped structure, and both ends of each heat exchange tube 5 are communicated with the interior of the housing 1, when the device is in operation, the heat exchange tubes 5 having the U-shaped structure are uniformly and fixedly communicated with the outer end wall of the housing 1, and the interior of the housing 1 is filled with the insulating oil, so that the heat exchange between the heat exchange tubes 5 and the housing 1 can be performed by the hot oil according to the principle that the hot oil floats upwards, the heat dissipation effect of the device is further enhanced when the device is in operation, and meanwhile, the sealing and water resistance of the device are further improved under the action of negative pressure by filling the insulating oil in the interior of the housing 1.

Referring to fig. 1-3, a pressure relief opening is formed on the outer end wall of the housing 1, a valve plug 6 is connected to the interior of the pressure relief opening through a screw thread, a groove having a regular hexagonal structure is formed on the outer end wall of the valve plug 6, when the device is in operation, when the device needs to be disassembled and maintained, the device enters the housing 1 from the pressure relief opening by rotating the valve plug 6, the hydraulic port is communicated with the inside and the outside of the housing 1 after losing the plugging of the valve plug 6, the pressure difference is balanced, so that the insulating cover plate 2 can be quickly removed from the plug port 103, the pressure relief opening is formed on the outer end wall of the housing 1, and the valve plug 6 is plugged through a screw thread connection, thereby the pressure difference inside and the outside of the housing 1 is balanced during the maintenance of the device, the insulating cover plate 2 is conveniently and quickly removed, the groove having a regular hexagonal structure is formed on the outer end wall of the valve plug 6, the force can be applied to the valve plug 6 by means of a hexagon wrench, the operation convenience of the device is effectively improved.

The above are merely preferred embodiments of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.