CN113809664A

CN113809664A - Electric power high-voltage board of pertinence heat transfer

Info

Publication number: CN113809664A
Application number: CN202110887159.XA
Authority: CN
Inventors: 李雯婷
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-03
Filing date: 2021-08-03
Publication date: 2021-12-17

Abstract

The invention discloses an electric high-voltage cabinet with targeted heat exchange, which belongs to the technical field of heat dissipation of high-voltage cabinets, and is characterized in that an air overflow pipe sleeved with a flow dividing pipe is arranged on an electric element mounting part, when the electric element mounting part is in a non-high-temperature environment, a flow dividing stopper at one end of a thermal deformation rod is limited at the heat conduction built-in pipe, external cold air is led into the flow dividing pipe and led out from a flow dividing hole and an air overflow hole to ventilate and cool the cabinet body in a large range, so that air is prevented from entering the electric element mounting part and being influenced by excessive water vapor, when the electric element mounting part is in a high-temperature environment, a plurality of thermal deformation rods recover to the high-temperature spring form, the thermal deformation rod contracts to drive a blocking ring and a blocking bag to move towards one side of a positioning ring, the blocking ring is blocked at the flow dividing hole, the blocking bag is separated from the heat conduction built-in pipe, so that the cold air is directly led into the electric element mounting part through the flow dividing pipe and the heat conduction built-in pipe, the specific closed or semi-closed part is cooled in a targeted manner, and the cooling effect is improved.

Description

Electric power high-voltage board of pertinence heat transfer

Technical Field

The invention relates to the technical field of high-voltage cabinet heat dissipation, in particular to a power high-voltage cabinet for targeted heat exchange.

Background

The high-voltage cabinet is an electrical device mainly including a circuit breaker, and means that a manufacturer assembles related high-voltage and low-voltage electrical appliances (including control electrical appliances, protection electrical appliances and measuring electrical appliances), a bus, a current-carrying conductor, an insulator and the like into a closed metal cabinet body according to the requirements of an electrical primary main wiring diagram, and the high-voltage cabinet is generally provided with a plurality of devices which are arranged in a high-voltage chamber and used for receiving and distributing electric energy in an electric power system.

With the increasing demand of the society on power supply reliability, the capability of the high-voltage power supply equipment for continuously supplying power for a long time faces more and more tests under the condition of high load. The high-voltage cabinet is a common high-voltage power supply device which has large current flowing through and often generates heat in a high-load period, one of the most common hidden dangers in the operation process is heat generation, and particularly in the summer load peak period, if the heat in the high-voltage cabinet is not timely dissipated, the normal work of electrical elements can be directly influenced.

Although in the prior art, the temperature of the high-pressure indoor air conditioner is generally reduced or a fan mounted on a broken wall of the cabinet body is opened for reducing the temperature. However, some electrical component mounting parts, i.e. heating parts, of the high-voltage cabinet are generally located in a closed or semi-closed space in the cabinet, and hot air in the cabinet is difficult to participate in cold air circulation in the high-voltage room, so that the effect of reducing the temperature of the air conditioner on the temperature reduction of the high-voltage cabinet is not good.

Therefore, the electric high-voltage cabinet capable of achieving targeted heat exchange is provided to effectively solve the problems in the prior art.

Disclosure of Invention

1. Technical problem to be solved

The invention aims to provide a power high-voltage cabinet with targeted heat exchange, wherein when an electric element installation part is in a non-high-temperature environment, a shunting stopper at one end of a thermal deformation rod is limited at a heat-conducting built-in pipe, external cold air is led into a shunting pipe and is led out from a shunting hole and an overflow hole, the cabinet body is ventilated and cooled in a large range to prevent air from entering the electric element installation part, when the electric element installation part is in the high-temperature environment, the thermal deformation rod is recovered to the high-temperature spring shape and contracts to drive a plugging ring and a plugging bag to move towards one side of a positioning ring, and the cold air is directly led into the electric element installation part through the heat-conducting built-in pipe to achieve targeted cooling of a closed or semi-closed part.

2. Technical scheme

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

The utility model provides an electric power high-voltage board of pertinence heat transfer, including the cabinet body and electric elements installation department, be equipped with the refrigeration case on the external end wall of cabinet body, be equipped with the water-cooled tube that extends to outside in the refrigeration case, water-cooled tube port department is equipped with the fan, be equipped with the excessive trachea that is located the electric elements installation department between the relative inner wall of cabinet body, install in the excessive trachea with water-cooled tube external communicating pipe, the communicating pipe other end passes through shunt tubes fixedly connected with heat conduction inner tube, the heat conduction inner tube other end extends to electric elements installation department inboard, a plurality of diffluence pass have been seted up to the annular on the end wall that the shunt tubes is close to heat conduction inner tube one end, multiunit gas overflow hole has been seted up on the gas overflow pipe, the inboard fixed holding ring that is equipped with of shunt tubes, the holding ring is located the diffluence pass and keeps away from heat conduction inner tube one side setting, the end wall of holding ring towards heat conduction inner tube one side is connected with the reposition of diversion plugging device through a plurality of thermal deformation pole, the reposition of redundant personnel plugging device includes with a plurality of diversion hole assorted plugging rings and connects the shutoff bag on the shutoff ring The blocking ring is connected to the inner wall of the shunt pipe in a sliding mode and fixedly connected with the plurality of thermal deformation rods, the blocking bag is movably and hermetically connected with the port of the heat conduction built-in pipe, and the bottom end of the air overflow pipe is communicated with the electrical installation portion through the pair of backflow boxes.

Further, the water-cooling pipe both ends are round platform shape post, and water-cooling pipe middle part both sides all are equipped with waterproof ventilated membrane, and it has the coolant liquid that is located between a pair of waterproof ventilated membrane still to pack in the water-cooling pipe, and cabinet body one side setting is kept away from to the fan.

Further, the internal portion of cabinet is equipped with temperature sensor and controller, controller and fan electric connection, under the high temperature condition, make high-pressure room air conditioner low temperature through the start-up of fan lead-in to the air overflow pipe in through the water-cooled tube, transmit air conditioning to the internal and electric elements installation department of cabinet through the air overflow pipe, realize the cooling, and set up the coolant liquid in the water-cooled tube, then play further cooling effect.

Further, communicating pipe and be located the round platform shape post of cabinet body one end and all pack and have the moisture absorption filler, and the porous sponge material is chooseed for use to the moisture absorption filler, is favorable to carrying out drying process to the air conditioning after the coolant liquid flows through to too much steam gets into to the internal of cabinet.

Furthermore, the bottom end face of the air overflow pipe is connected with the electric element mounting part through a pair of arc-shaped pieces, and a plurality of groups of air overflow holes are formed in the upper sides of the pair of arc-shaped pieces.

Furthermore, the heat conduction built-in pipe, the plugging bag and the plugging ring are all made of heat conduction materials, the end wall of the plugging ring is wrapped with a flexible pad, and a sealing ring matched with the plugging ring is arranged at the port of the heat conduction built-in pipe, which is located on the inner side of the shunt pipe.

Furthermore, the plurality of thermal deformation rods are made of memory alloy materials, the thermal deformation rods are in a stretching non-bending state under a low-temperature state, and the thermal deformation rods contract after reaching a spring phase state when reaching a high temperature.

Furthermore, the horizontal length of the plugging ring is far greater than that of the shunting holes, so that the plugging ring can completely shield the shunting holes when the thermal deformation rod is restored to the high-temperature spring phase state, and cold air is directly guided into the electric element installation part through the heat conduction built-in pipe.

Furthermore, a plurality of carbon fiber tubes are installed in the heat conduction built-in tube, gaps are reserved among the carbon fiber tubes, and the heat conduction effect is further achieved.

Furthermore, the outer end of the gas overflow pipe is fixedly connected with a delivery pipe through a locking sleeve, the outer end of the delivery pipe penetrates through and extends to the outer side of the cabinet body, and a filter screen is embedded and installed at the delivery pipe.

3. Advantageous effects

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

(1) the scheme is that the air overflow pipe provided with the shunt pipe is sleeved on the electric element mounting part, when the electric element installation part is in a non-high-temperature environment, the shunting stopper at one end of the thermal deformation rod is limited at the heat conduction built-in pipe, external cold air is guided into the shunting pipe and is guided out through the shunting hole and the air overflow hole, the air is changed and the temperature is reduced in a large range in the cabinet body, the air is reduced from entering the electric element installation part, so as to prevent the electric element installation part from being influenced by excessive water vapor, when the electric element installation part is in a high-temperature environment, the plurality of thermal deformation rods recover to the high-temperature spring shape, the thermal deformation rods shrink to drive the plugging ring and the plugging bag to move towards one side of the positioning ring, the plugging ring plugs at the shunt hole, the plugging bag is separated from the heat-conducting inner tube, therefore, the cold air is directly led into the electric element mounting part through the shunt pipe and the heat conduction built-in pipe, the specific closed or semi-closed part is cooled in a targeted manner, and the cooling effect is improved.

(2) The water-cooled tube both ends of this scheme are round platform shape post, water-cooled tube middle part both sides all are equipped with waterproof ventilated membrane, it has the coolant liquid that is located between a pair of waterproof ventilated membrane to still fill in the water-cooled tube, cabinet body one side setting is kept away from to the fan, the internal portion of cabinet is equipped with temperature sensor and controller, controller and fan electric connection, under the high temperature condition, intelligent start-up through the fan makes high-pressure indoor air conditioner low temperature pass through the water-cooled tube leading-in to in the air overflow pipe, pass through air overflow pipe with air conditioning transmission to the internal and electric elements installation department of cabinet, realize the cooling, and set up the coolant liquid in the water-cooled tube, when not opening the air conditioner in the high-pressure chamber, the gas flow is through the coolant liquid, play certain water-cooling effect equally.

(3) This scheme all fills in communicating pipe and the round platform shape post that is located cabinet body one end has the moisture absorption to pack, and the porous sponge material is chooseed for use to the moisture absorption packing, is favorable to carrying out drying process to the air conditioning after the coolant liquid that flows through to too much steam gets into to the internal of cabinet.

(4) The heat conduction inner pipe, shutoff bag and shutoff ring all adopt the heat conduction material to make, the cladding has the flexible pad on the end wall of shutoff ring, install many carbon fiber tubes in the heat conduction inner pipe, it is gapped to reserve between many carbon fiber tubes, further play the heat conduction effect, the port that the heat conduction inner pipe is located the shunt tubes inboard is equipped with shutoff ring assorted sealing washer, realize high performance heat transfer effect, after electric elements installation department temperature risees, the thermal deformation pole that is located the shunt tubes can perceive high temperature as early as possible.

(5) This scheme all adopts the memory alloy material to make a plurality of thermal deformation poles, can realize being in two different forms when high temperature and normal low temperature state to can adjust the position of reposition of redundant personnel plugging device, carry out the pertinence cooling treatment according to the temperature condition of different positions in a flexible way.

(6) The horizontal length of the plugging ring of this scheme is far greater than the horizontal length of reposition of redundant personnel hole, effectively realizes when thermal deformation pole resumes to its high temperature spring phase, the shutoff ring can be comparatively complete shield the reposition of redundant personnel hole, realizes that air conditioning directly channels into to the electrical component installation department in through the heat conduction inner tube.

(7) The outer end of excessive trachea is through lock sleeve fixedly connected with contact tube, and the outer end of contact tube runs through and extends to the external side of cabinet, and contact tube department inlays to establish installs the filter screen, and the internal back of cabinet is impressed through the air conditioning that excessive trachea was derived, is favorable to the cabinet body to carry out inside and outside gas exchange through the contact tube.

Drawings

FIG. 1 is a partial internal venting view of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a first schematic structural view of the junction of the overflow tube and the refrigeration box of the present invention;

FIG. 4 is a second schematic structural view of the junction of the overflow tube and the refrigeration box of the present invention;

FIG. 5 is a partial inside view of the junction of the overflow tube and the refrigeration cassette of the present invention;

FIG. 6 is a partial cross-sectional view at the overflow tube of the present invention;

FIG. 7 is a partially enlarged view of the shunt stopper of FIG. 6 being limited to the heat conducting inner tube;

FIG. 8 is a partial schematic view of the splitter tube of the present invention with the splitter holes open;

FIG. 9 is a schematic view of the cold air flow when the shunt stopper of the present invention is limited at the heat-conducting inner tube;

FIG. 10 is a partial schematic view of the separation tube of the present invention after the flow-splitting orifice is closed by a plugging ring;

FIG. 11 is a schematic view of the cold air circulation when the shunt stopper is positioned at the shunt hole according to the present invention;

fig. 12 is a partially enlarged view of the shunt occluder of fig. 11 positioned at the shunt hole.

The reference numbers in the figures illustrate:

the refrigerator comprises a cabinet body 1, an air overflow pipe 2, an air overflow hole 201, a refrigeration box 3, a water cooling pipe 4, a waterproof ventilated membrane 401, a communicating pipe 5, a flow dividing pipe 6, a flow dividing hole 601, a heat conduction built-in pipe 7, a blocking ring 8, a positioning ring 9, a thermal deformation rod 10, a backflow box 11, a delivery pipe 12 and a blocking bag 13.

Detailed Description

The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection 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. 1-5, an electric high-voltage cabinet with a targeted heat exchange function comprises a cabinet body 1 and an electric element installation part, wherein the electric element installation part is a closed or plate-closed installation position of an easy-to-heat element, a refrigeration box 3 is arranged on the outer end wall of the cabinet body 1, a water-cooling pipe 4 extending outwards is arranged in the refrigeration box 3, a fan is arranged at the port of the water-cooling pipe 4, an air overflow pipe 2 located on the electric element installation part is arranged between the opposite inner walls of the cabinet body 1, a communication pipe 5 externally connected with the water-cooling pipe 4 is arranged in the air overflow pipe 2, the other end of the communication pipe 5 is fixedly connected with a heat-conducting built-in pipe 7 through a flow dividing pipe 6, and the other end of the heat-conducting built-in pipe 7 extends to the inner side of the electric element installation part, so that the water-cooling pipe 4, the communication pipe 5, the flow dividing pipe 6 and the heat-conducting built-in pipe 7 are mutually communicated.

4 both ends of water-cooled tube are round platform shape post, 4 middle part both sides of water-cooled tube all are equipped with waterproof ventilated membrane 401, it has the coolant liquid that is located between a pair of waterproof ventilated membrane 401 to still fill in the water-cooled tube 4, the cabinet body 1 one side setting is kept away from to the fan, 1 inside temperature sensor and the controller of being equipped with of cabinet body, controller and fan electric connection, under the high temperature condition, intelligent start-up through the fan makes high-pressure indoor air conditioner low temperature pass through water-cooled tube 4 leading-in to the gas overflow pipe 2 in, pass through gas overflow pipe 2 with air conditioning transmission to cabinet body 1 in and electric elements installation department, realize the cooling, and set up the coolant liquid in water-cooled tube 4, then play further cooling effect, and when not opening the air conditioner in the high-pressure chamber, the gas stream flows through the coolant liquid, play certain water-cooling effect equally.

Communicating pipe 5 and the round platform shape post that is located cabinet body 1 one end all pack and have the moisture absorption filler, and the porous sponge material is chooseed for use to the moisture absorption filler, is favorable to carrying out drying process to the air conditioning after the coolant liquid flows through to in too much steam gets into cabinet body 1 and electric elements installation site.

Referring to fig. 4-6, a plurality of branch holes 601 are annularly formed on the end wall of the branch pipe 6 near one end of the heat-conducting built-in pipe 7, a plurality of groups of air vents 201 are formed on the air overflow pipe 2, the bottom end surface of the air overflow pipe 2 is connected with the electrical component mounting part through a pair of arc-shaped pieces, and the plurality of groups of air vents 201 are formed on the upper side of the pair of arc-shaped pieces, so that the branch pipe 6 and the air overflow pipe 2 are communicated with each other.

Referring to fig. 6-9, a positioning ring 9 is fixed on the inner side of the shunt tube 6, the positioning ring 9 is located at one side of the shunt hole 601 far from the heat-conducting inner tube 7, the end wall of the positioning ring 9 facing one side of the heat-conducting inner tube 7 is connected with a shunt stopper through a plurality of thermal deformation rods 10, one side of the shunt stopper close to the heat-conducting inner tube 7 is exposed out of the shunt hole 601 in an initial non-high temperature environment, the cold air introduced from the water-cooling tube 4 is directly introduced into the air-spilling tube 2 through the shunt hole 601 on the shunt tube 6 and spills out from the air-spilling hole 201, and the whole ventilation and cooling treatment is directly performed in the cabinet 1, so that the introduction of water vapor into the electrical component mounting part is reduced, and the electrical component mounting part is kept at a lower temperature to a certain extent after the temperature in the cabinet 1 is reduced.

Specifically, the shunt plugging device comprises a plugging ring 8 matched with a plurality of shunt holes 601 and a plugging bag 13 connected to the plugging ring 8, the plugging ring 8 is slidably connected to the inner wall of the shunt tube 6 and fixedly connected with a plurality of thermal deformation rods 10, the plugging bag 13 is movably and hermetically connected with the port of the heat-conducting built-in tube 7, and the bottom end of the air overflow tube 2 is communicated with the electrical installation part through a pair of return boxes 11;

referring to fig. 10-12, when the electrical component mounting portion is in a certain high temperature state in a long-time working environment, due to the shrinkage of the thermo-deformable rod 10, the shunt stopper is separated from the heat-conducting inner tube 7 and moves to the shunt hole 601, so as to block the shunt hole 601 and perform a through-flow function on the heat-conducting inner tube 7.

Wherein, the heat conduction inner pipe 7, the plugging bag 13 and the plugging ring 8 are all made of heat conduction materials, the end wall of the plugging ring 8 is wrapped by a flexible pad, the port of the heat conduction inner pipe 7, which is positioned at the inner side of the shunt pipe 6, is provided with a sealing ring matched with the plugging ring 8, the diameter of the plugging ring 8 is smaller than that of the shunt pipe 6, a plurality of carbon fiber pipes are arranged in the heat conduction inner pipe 7, a gap is reserved among the carbon fiber pipes, the heat conduction effect is further achieved, the plurality of thermal deformation rods 10 are made of memory alloy materials, the thermal deformation rods 10 are in a stretching non-bending state under a normal low temperature state, one side of the thermal deformation rod 10, which is far away from the positioning ring 9, is positioned at one side of the shunt hole 601, which is close to the heat conduction inner pipe 7, the heat conduction inner pipe 13 and the plugging ring 8 transmit heat to the thermal deformation rod 10, when the thermal deformation rod 10 reaches a high temperature which enables the thermal deformation rod to recover to a spring phase state, the thermal deformation rod 10 contracts to drive the one-level delivery pipe 12 of the plugging ring 8 and the box positioning ring 9 to move, so that the plugging ring 8 moves to the diversion hole 601, the diversion hole 601 is plugged, at the moment, the port of the heat conduction built-in pipe 7 is exposed, the cold air led into the diversion pipe 6 is led into the electric element installation part through the heat conduction built-in pipe 7, the electric element installation part is subjected to targeted cooling, the high-temperature gas in the electric element installation part is led into the air overflow pipe 2 through the backflow box 11 and then overflows from the air overflow hole 201, the higher-temperature gas is dissipated out of the cabinet through the cabinet body 1, after the cold air is continuously introduced, the cabinet body 1 in the electric element installation part and the cabinet body 1 reaches a certain low-temperature heat dissipation state, and the cycle is carried out in a targeted cooling mode.

In addition, it should be added here that the horizontal length of the blocking ring 8 is much longer than the horizontal length of the shunting hole 601, so that when the thermal deformation rod 10 returns to its high-temperature spring phase state, the blocking ring 8 can completely shield the shunting hole 601, and the cold air is directly introduced into the electrical component mounting portion through the heat-conducting built-in pipe 7.

Referring to fig. 1-3, the outer end of the air overflow pipe 2 is fixedly connected with a guide pipe 12 through a locking sleeve, the outer end of the guide pipe 12 extends to the outside of the cabinet 1, a filter screen is embedded in the guide pipe 12, the filter screen is easy to detach and clean, and after cold air guided out through the air overflow pipe 2 enters the cabinet 1, the cabinet 1 can exchange air inside and outside through the guide pipe 12, so as to realize cooling.

Compared with the common electric high-voltage cabinet in the prior art, the air overflow pipe 2 provided with the flow dividing pipe 6 is sleeved on the electric element mounting part, the water cooling pipe 4 is externally connected with the flow dividing pipe 6, the heat conduction built-in pipe 7 extending into the electric element mounting part is internally connected with the flow dividing pipe 6, when the electric element mounting part is in a non-high-temperature environment, the flow dividing plugging devices at one ends of the plurality of heat deformation rods 10 are limited at the heat conduction built-in pipe 7, external cold air is led into the flow dividing pipe 6 and is led out through the flow dividing holes 601 and the air overflow holes 201, large-range air exchange and temperature reduction of the interior of the cabinet body 1 are realized, air is reduced to enter the electric element mounting part, and the electric element is protected from excessive water vapor;

when the electric element installation part is in a high-temperature environment, the thermal deformation rods 10 recover to the high-temperature spring phase state, the thermal deformation rods 10 shrink to drive the plugging rings 8 and the plugging bags 13 to move towards one side of the positioning ring 9, the plugging rings 8 are plugged in the shunting holes 601, and the plugging bags 13 are separated from the heat-conducting built-in pipe 7, so that cold air led into the shunting pipe 6 is directly led into the electric element installation part through the heat-conducting built-in pipe 7, specific cooling is carried out on the special easy-heating part, and the cooling effect is improved.

The components used in the present invention are all standard components or components known to those skilled in the art, and the structure and principle thereof can be known to those skilled in the art through technical manuals or through routine experiments.

The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.

Claims

1. The utility model provides a high-voltage cabinet of electric power of pertinence heat transfer, includes cabinet body (1) and electric elements installation department, its characterized in that: the refrigerator is characterized in that a refrigeration box (3) is arranged on the outer end wall of the cabinet body (1), a water cooling pipe (4) extending outwards is arranged in the refrigeration box (3), a fan is arranged at the port of the water cooling pipe (4), an air overflow pipe (2) positioned on the electric element installation part is arranged between the opposite inner walls of the cabinet body (1), a communication pipe (5) externally connected with the water cooling pipe (4) is arranged in the air overflow pipe (2), the other end of the communication pipe (5) is fixedly connected with a heat conduction built-in pipe (7) through a shunt pipe (6), and the other end of the heat conduction built-in pipe (7) extends to the inner side of the electric element installation part;

a plurality of shunting holes (601) are annularly formed in the end wall of the shunting pipe (6) close to one end of the heat-conducting built-in pipe (7), a plurality of groups of air overflowing holes (201) are formed in the air overflowing pipe (2), a positioning ring (9) is fixedly arranged on the inner side of the shunting pipe (6), the positioning ring (9) is arranged on one side, away from the heat-conducting built-in pipe (7), of the shunting holes (601), and the end wall, facing one side of the heat-conducting built-in pipe (7), of the positioning ring (9) is connected with a shunting stopper through a plurality of thermal deformation rods (10);

the shunting stopper comprises a blocking ring (8) matched with a plurality of shunting holes (601) and a blocking bag (13) connected to the blocking ring (8), wherein the blocking ring (8) is slidably connected to the inner wall of the shunting pipe (6) and fixedly connected with a plurality of thermal deformation rods (10), the blocking bag (13) is movably and hermetically connected with the port of the heat-conducting built-in pipe (7), and the bottom end of the gas overflow pipe (2) is communicated with the electrical installation part through a pair of backflow boxes (11).

2. The high-voltage power cabinet for the targeted heat exchange of claim 1, wherein: the water-cooled generator is characterized in that two ends of the water-cooled tube (4) are round table-shaped columns, waterproof breathable films (401) are arranged on two sides of the middle of the water-cooled tube (4), cooling liquid between the pair of waterproof breathable films (401) is filled in the water-cooled tube (4), and the fan is arranged on one side of the cabinet body (1) away.

3. The high-voltage power cabinet for the targeted heat exchange of claim 2, wherein: the cabinet body (1) is internally provided with a temperature sensor and a controller, and the controller is electrically connected with the fan.

4. The high-voltage power cabinet for the targeted heat exchange of claim 3, wherein: the communicating pipe (5) and the truncated cone-shaped column positioned at one end of the cabinet body (1) are filled with moisture absorption filler, and the moisture absorption filler is made of porous sponge materials.

5. The high-voltage power cabinet for the targeted heat exchange of claim 1, wherein: the bottom end face of the air overflow pipe (2) is connected with the electric element installation part through a pair of arc-shaped pieces, and the plurality of groups of air overflow holes (201) are formed in the upper sides of the pair of arc-shaped pieces.

6. The high-voltage power cabinet for the targeted heat exchange of claim 1, wherein: the heat conduction built-in pipe (7), the plugging bag (13) and the plugging ring (8) are all made of heat conduction materials, and the end wall of the plugging ring (8) is wrapped with a flexible pad.

7. The high-voltage power cabinet for the targeted heat exchange of claim 1, wherein: the heat deformation rods (10) are made of memory alloy materials, and the heat deformation rods (10) are in a stretching non-bending state continuously at a low temperature.

8. The high-voltage power cabinet for the targeted heat exchange of claim 1, wherein: the horizontal length of the plugging ring (8) is far greater than that of the shunt hole (601).

9. The high-voltage power cabinet for the targeted heat exchange of claim 1, wherein: a plurality of carbon fiber tubes are arranged in the heat conduction built-in tube (7), and gaps are reserved among the carbon fiber tubes.

10. The high-voltage power cabinet for the targeted heat exchange of claim 1, wherein: the outer end of the gas overflow pipe (2) is fixedly connected with a delivery pipe (12) through a locking sleeve, the outer end of the delivery pipe (12) penetrates and extends to the outer side of the cabinet body (1), and a filter screen is embedded and installed at the delivery pipe (12).