An insulating sealed epoxy solid sealed pole

Abstract

The present invention relates to the technical field of air circuit breakers, and specifically to an insulating sealed epoxy-sealed pole, comprising a main body, a cooling cylinder and a liquid delivery component, wherein the cooling cylinder is sleeved on the outside of the main body, and a liquid storage chamber is provided inside the cooling cylinder, and the liquid storage chamber is separated into an upper chamber and a lower chamber along the vertical direction, and cooling medium is stored in both the upper chamber and the lower chamber. The present invention is provided with a liquid delivery component, and the liquid delivery component is used to realize the directional delivery of the cooling medium from the upper chamber to the lower chamber, and the cooling medium first absorbs heat and vaporizes in the upper chamber, and then condenses and flows back into the upper chamber when it encounters cold, and when the amount of liquid cooling medium in the upper chamber exceeds a preset value, the cooling medium in the upper chamber can flow back into the lower chamber, thereby realizing the self-circulation of the cooling medium between the upper chamber and the lower chamber, and because the liquid delivery component is configured so that the delivery amount of the cooling medium of the liquid delivery component is positively correlated with the temperature in the upper chamber, the higher the temperature in the upper chamber, the faster the self-circulation speed of the cooling medium.

Description

Technical Field

[0001] The invention relates to the technical field of air circuit breakers, and in particular to an insulating and sealed epoxy-sealed pole. Background Art

[0002] The sealed pole is an insulating component used in high-voltage switchgear, mainly used in electrical equipment such as circuit breakers and disconnectors. The main feature of the sealed pole is that the contact system and arc extinguishing chamber of the circuit breaker are encapsulated in solid insulating materials to improve insulation performance and reliability. During the operation of the sealed pole, a lot of heat will be generated, which is mainly concentrated in the contact system and arc extinguishing chamber. The contact system generates more heat mainly because when the sealed pole is in a closed state, the current passes through the main contact and the auxiliary contact. At this time, due to the contact resistance between the contacts, Joule heat will be generated. Especially when a large current passes, the temperature of the contact area will increase significantly. The arc extinguishing chamber generates more heat mainly because a large amount of heat will be released during the arc being divided and extinguished in the arc extinguishing chamber. The heat generated by the contact system and the arc extinguishing chamber mainly depends on the insulating material layer (epoxy resin or silicone rubber). Specifically, the heat generated by the contact system and the arc extinguishing chamber is transferred to the insulating material layer in the form of heat transfer, and the insulating material layer is located in the air to achieve heat dissipation.

[0003] However, since the thermal conductivity of the insulating material layer is relatively low, its heat dissipation performance under high heat load is limited. Therefore, when a large current passes through, the temperature of the sealed pole rises rapidly, which not only affects the performance and reliability of the equipment, but also easily causes safety accidents. Summary of the invention

[0004] Based on this, it is necessary to provide an insulating sealed epoxy solid-sealed pole to address the problems existing in the current solid-sealed poles.

[0005] The above purpose is achieved through the following technical solutions:

[0006] An insulating sealed epoxy solid-sealed pole comprises:

[0007] main body;

[0008] A cooling cylinder, which is sleeved on the outside of the main body;

[0009] A liquid storage chamber is provided inside the cooling cylinder, and the liquid storage chamber is separated into an upper chamber and a lower chamber in the vertical direction, and cooling medium is stored in both the upper chamber and the lower chamber;

[0010] A liquid delivery component is disposed in the liquid storage chamber and is used to deliver the cooling medium in the lower chamber to the upper chamber in a directional manner;

[0011] The liquid delivery component is configured so that the delivery amount of the cooling medium of the liquid delivery component is positively correlated with the temperature in the upper chamber;

[0012] When the amount of the cooling medium in the upper chamber exceeds a preset value, the cooling medium in the upper chamber can flow back into the lower chamber.

[0013] In one embodiment, the upper chamber and the lower chamber are divided into a plurality of sub-chambers at equal intervals in the circumferential direction, and the plurality of sub-chambers of the upper chamber correspond one to one with the plurality of sub-chambers of the lower chamber;

[0014] There are multiple liquid delivery components, and the multiple liquid delivery components correspond one-to-one to the multiple sub-chambers.

[0015] In one of the embodiments, the portion of the main body corresponding to the upper chamber of the cooling cylinder is covered with a capillary fiber net.

[0016] In one of the embodiments, an isolation plate is provided on the inner circumferential wall of the liquid storage chamber, and the isolation plate is used to isolate the liquid storage chamber into an upper chamber and a lower chamber in the vertical direction. A plurality of through holes are opened on the isolation plate, and the plurality of through holes correspond one-to-one to a plurality of liquid delivery components, so that the liquid delivery components can directionally transport the cooling medium in the lower chamber to the upper chamber through the through holes.

[0017] In one embodiment, the liquid delivery assembly includes a columnar mesh tube, a lower connecting ring, an upper connecting ring, a connecting rod and a material storage unit, the columnar mesh tube is coaxial with the through hole, the lower end of the columnar mesh tube is arranged at the bottom of the liquid storage chamber, the upper end of the columnar mesh tube is arranged on the lower surface of the isolation plate, the lower connecting ring is also coaxial with the through hole, the lower end of the lower connecting ring is arranged on the upper surface of the isolation plate, the upper connecting ring is also coaxial with the through hole, the upper surface of the upper connecting ring is arranged on the top of the liquid storage chamber, the connecting rod is also coaxial with the through hole and the connecting rod is located in the through hole, there are multiple material storage units, and the multiple material storage units are spaced apart along the axis of the connecting rod, and when the material storage unit moves to a preset distance above the lower connecting ring, the material storage unit can be opened to allow the cooling medium in the material storage unit to flow into the upper chamber.

[0018] In one of the embodiments, the material storage unit includes a lower fixed ring, a sealing ring, an intermediate ring and a plurality of support rods. The lower fixed ring is coaxially arranged on the connecting rod, the intermediate ring is coaxially slidably sleeved on the connecting rod, and the intermediate ring is elastically connected to the connecting rod. A plurality of support rods are circumferentially equidistantly arranged on the intermediate ring, and one end of the support rod away from the intermediate ring is arranged on the inner circumferential wall of the sealing ring. Both the lower fixed ring and the sealing ring can slide and seal with the lower connecting ring.

[0019] In one embodiment, a plurality of upper through holes are formed on the top of the cooling cylinder, and the plurality of upper through holes correspond to the plurality of through holes one by one;

[0020] The liquid delivery assembly also includes a sensing cylinder, which is slidably sealed with an upper connecting ring, coaxially fixedly connected with a connecting rod, and elastically connected with the isolation plate.

[0021] In one embodiment, a plurality of heat dissipation fins are disposed on the top of the induction tube.

[0022] In one of the embodiments, a vacuum assembly is provided on the top of the cooling cylinder, and the vacuum assembly is used to reduce the air pressure in the liquid storage chamber.

[0023] In one embodiment, the air extraction assembly includes a moving ring and a screw, an annular groove is provided at the top center of the cooling cylinder, a plurality of ventilation grooves are provided on the peripheral wall of the annular groove, the plurality of ventilation grooves correspond to the plurality of sub-chambers one by one, the axis of the screw is vertical, the moving ring is coaxial with the annular groove, and the moving ring is threadedly connected with the screw;

[0024] An air extraction pipe is provided on the top of the moving ring, and the lower end of the air extraction pipe penetrates downwardly through the moving ring.

[0025] The beneficial effects of the present invention are:

[0026] The present invention is provided with a liquid delivery component, which realizes the directional delivery of cooling medium from the upper chamber to the lower chamber through the liquid delivery component. The cooling medium first absorbs heat and vaporizes in the upper chamber, then condenses into liquid when it encounters cold, and flows back into the upper chamber. When the amount of liquid cooling medium in the upper chamber exceeds a preset value, the cooling medium in the upper chamber can flow back into the lower chamber, thereby realizing the self-circulation of the cooling medium between the upper chamber and the lower chamber. Moreover, since the liquid delivery component is configured so that the delivery amount of the cooling medium of the liquid delivery component is positively correlated with the temperature in the upper chamber, the higher the temperature in the upper chamber, the faster the self-circulation speed of the cooling medium, which can not only speed up the heat dissipation efficiency, but also enable the amount of cooling medium in the upper chamber and the amount of cooling medium in the lower chamber to be maintained at an appropriate level, and the vaporization effect of the cooling medium will not be affected due to the excessive amount of cooling medium, nor will the internal circulation of the cooling medium be stopped due to the exhaustion of the cooling medium in the upper chamber or the lower chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is an overall schematic diagram of an insulating sealed epoxy solid-sealed pole of the present invention;

[0028] Figure 2 A longitudinal cross-sectional view of an insulating sealed epoxy-sealed pole of the present invention;

[0029] Figure 3 It is a transverse cross-sectional view of an insulating sealed epoxy solid-sealed pole of the present invention;

[0030] Figure 4 It is a schematic diagram of an open state of a liquid delivery component in an insulating sealed epoxy solid-sealed pole of the present invention;

[0031] Figure 5It is a schematic diagram of a closed state of a liquid delivery component in an insulating sealed epoxy solid-sealed pole of the present invention;

[0032] Figure 6 The figure is an exploded view of an insulating sealed epoxy solid-sealed pole of the present invention.

[0033] in:

[0034] 100, main body; 200, cooling cylinder; 211, upper chamber; 212, lower chamber; 220, isolation plate; 221, through hole; 230, upper through hole; 240, lower liquid inlet; 250, upper liquid inlet; 300, liquid delivery assembly; 310, columnar net cylinder; 320, lower connecting ring; 330, upper connecting ring; 331, vertical slide; 340, connecting rod; 350, storage unit ; 351, lower fixing ring; 352, sealing ring; 353, middle ring; 354, support rod; 355, first spring; 360, induction tube; 361, heat dissipation fin; 362, slider; 370, second spring; 400, capillary fiber mesh; 500, exhaust assembly; 510, movable ring; 511, exhaust pipe; 520, screw; 530, annular sink groove; 531, ventilation groove. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0037] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] like Figure 1-Figure 6 As shown, an insulating sealed epoxy-sealed pole includes a main body 100, a cooling cylinder 200 and a liquid delivery component 300. The cooling cylinder 200 is sleeved on the outside of the main body 100. A liquid storage chamber is provided inside the cooling cylinder 200. The liquid storage chamber is separated into an upper chamber 211 and a lower chamber 212 along the vertical direction. Cooling medium is stored in both the upper chamber 211 and the lower chamber 212. The liquid delivery component 300 is arranged in the liquid storage chamber. The liquid delivery component 300 is used to directional transport the cooling medium in the lower chamber 212 to the upper chamber 211. The liquid delivery component 300 is configured so that the delivery amount of the cooling medium of the liquid delivery component 300 is positively correlated with the temperature in the upper chamber 211. When the amount of the cooling medium in the upper chamber 211 exceeds a preset value, the cooling medium in the upper chamber 211 can flow back to the lower chamber 212.

[0039] When in use, the staff connects the moving contact end and the static contact end of the main body 100 to different components respectively. Specifically, the moving contact end of the main body 100 is connected to the operating mechanism or driving mechanism of the circuit breaker so that the moving contact end can move under the driving action of the operating mechanism, thereby realizing the contact or separation of the moving and static contacts, and the static contact end is connected to the busbar, cable or other conductive components. When the main body 100 is in working state, when a large current passes through the main body 100, the contact system and the arc extinguishing chamber inside the main body 100 generate a large amount of heat, and the heat is absorbed by the insulating layer on the surface of the main body 100 in the form of heat transfer. Since the cooling cylinder 200 is sleeved on the outside of the main body 100, and the cooling medium is stored inside the cooling cylinder 200, the heat absorbed by the insulating layer of the main body 100 is absorbed by the cooling medium, thereby preventing the insulating layer of the main body 100 from overheating. Since the liquid delivery component 300 is configured so that the delivery amount of the cooling medium is positively correlated with the temperature in the upper chamber 211, when the main body 100 generates more heat, the temperature in the upper chamber 211 rises rapidly. At this time, the liquid delivery component 300 is Component 300 transports more cooling medium from the lower chamber 212 to the upper chamber 211 in a directional manner. The cooling medium gradually vaporizes after absorbing heat in the upper chamber 211. The vaporized cooling medium gradually condenses after the temperature drops. The condensed cooling medium drips into the upper chamber 211, so the amount of cooling medium in the upper chamber 211 increases. When the amount of cooling medium in the upper chamber 211 increases to exceed a preset value, the cooling medium in the upper chamber 211 flows back to the lower chamber 212, thereby realizing the self-circulation of the cooling medium between the upper chamber 211 and the lower chamber 212. The higher the temperature, the faster the circulation speed of the cooling medium, which is conducive to accelerating heat dissipation and preventing the main body 100 from overheating.

[0040] It can be understood that by setting up the liquid delivery component 300, the self-circulation of the cooling medium between the upper chamber 211 and the lower chamber 212 can be maintained, so that the amount of cooling medium in the upper chamber 211 and the amount of cooling medium in the lower chamber 212 are maintained at an appropriate level, and the vaporization effect of the cooling medium will not be affected by the excessive amount of cooling medium, nor will the internal circulation of the cooling medium be stopped due to the exhaustion of the cooling medium in the upper chamber 211 or the lower chamber 212.

[0041] In a further embodiment, Figure 2 and Figure 3 As shown, the upper chamber 211 and the lower chamber 212 are divided into a plurality of sub-chambers at equal circumferential intervals, the plurality of sub-chambers of the upper chamber 211 correspond one-to-one to the plurality of sub-chambers of the lower chamber 212, there are a plurality of liquid delivery components 300, and the plurality of liquid delivery components 300 correspond one-to-one to the plurality of sub-chambers.

[0042] By dividing the upper chamber 211 and the lower chamber 212 into a plurality of sub-chambers at equal intervals in the circumferential direction, the higher the temperature of a sub-chamber, the faster the internal circulation speed of the cooling medium in the sub-chamber, and the higher the heat dissipation efficiency, thereby improving the accuracy of heat dissipation in the sub-chamber.

[0043] In a further embodiment, a portion of the main body 100 corresponding to the upper chamber 211 of the cooling cylinder 200 is covered with a capillary fiber mesh 400 .

[0044] When the height of the cooling medium in the upper chamber 211 is less than the height of the capillary fiber mesh 400 , the cooling medium is uniformly attached to the surface of the capillary fiber mesh 400 due to capillary action, so that the cooling medium can better absorb the heat of the main body 100 .

[0045] In a further embodiment, Figure 2 As shown, an isolation plate 220 is provided on the inner wall of the liquid storage chamber, and the isolation plate 220 is used to separate the liquid storage chamber into an upper chamber 211 and a lower chamber 212 in the vertical direction. A plurality of through holes 221 are opened on the isolation plate 220, and the plurality of through holes 221 correspond one by one to the plurality of liquid delivery components 300, so that the liquid delivery components 300 can directionally transport the cooling medium in the lower chamber 212 to the upper chamber 211 through the through holes 221.

[0046] The isolation plate 220 is provided to separate the liquid storage chamber into an upper chamber 211 and a lower chamber 212 in the vertical direction. A through hole 221 is opened on the isolation plate 220, and a plurality of through holes 221 correspond one-to-one to a plurality of liquid delivery components 300, so that the liquid delivery components 300 can directionally transport the cooling medium in the lower chamber 212 to the upper chamber 211 through the through holes 221.

[0047] In a further embodiment, Figure 2 , Figure 4 and Figure 5As shown, the liquid delivery component 300 includes a columnar mesh tube 310, a lower connecting ring 320, an upper connecting ring 330, a connecting rod 340 and a storage unit 350. The columnar mesh tube 310 is coaxial with the through hole 221, the lower end of the columnar mesh tube 310 is arranged at the bottom of the liquid storage chamber, the upper end of the columnar mesh tube 310 is arranged on the lower surface of the isolation plate 220, the lower connecting ring 320 is also coaxial with the through hole 221, the lower end of the lower connecting ring 320 is arranged on the upper surface of the isolation plate 220, the upper connecting ring 330 is also coaxial with the through hole 221, the upper surface of the upper connecting ring 330 is arranged on the top of the liquid storage chamber, the connecting rod 340 is also coaxial with the through hole 221 and the connecting rod 340 is located in the through hole 221, and the storage unit 350 has Multiple, multiple material storage units 350 are arranged at intervals along the axis of the connecting rod 340. When the material storage unit 350 moves to a preset distance above the lower connecting ring 320, the material storage unit 350 can be opened to allow the cooling medium in the material storage unit 350 to flow into the upper chamber 211. The top of the cooling cylinder 200 is provided with multiple upper through holes 230, and the multiple upper through holes 230 correspond one-to-one to the multiple through holes 221. The liquid delivery component 300 also includes a sensing cylinder 360, which is slidingly sealed with the upper connecting ring 330, and the sensing cylinder 360 is coaxially fixedly connected to the connecting rod 340. The sensing cylinder 360 and the isolation plate 220 are elastically connected. Specifically, the sensing cylinder 360 and the cooling cylinder 200 are connected by a second spring 370.

[0048] When the temperature in the upper chamber 211 rises, the air pressure in the upper chamber 211 increases. When the air pressure in the upper chamber 211 increases to a level sufficient to overcome the spring force of the second spring 370 and drive the sensing tube 360 ​​to move upward, the sensing tube 360 ​​drives the connecting rod 340 to move upward, and the connecting rod 340 drives the storage unit 350 to move upward. When the storage unit 350 moves to a preset distance above the lower connecting ring 320, the storage unit 350 opens to allow the cooling medium in the storage unit 350 to flow into the upper chamber 211, so that the cooling medium is directed from the lower chamber 212 to the upper chamber 211. The higher the temperature in the upper chamber 211, the longer the rising distance of the connecting rod 340, so the storage unit 350 moves to the preset distance above the lower connecting ring 320. The more the number of 350 is, the more the amount of cooling medium added to the upper chamber 211 is, thereby avoiding the exhaustion of the cooling medium in the upper chamber 211. After entering the upper chamber 211, the cooling medium gradually absorbs heat and vaporizes and gathers at the top of the sensing tube 360. Since the top of the sensing tube 360 ​​is far away from the center of the heat source, the top temperature of the sensing tube 360 ​​is lower than the temperature in the upper chamber 211. Therefore, the cooling medium gradually condenses into liquid after the temperature drops and drips into the upper chamber 211. As the amount of cooling medium in the upper chamber 211 gradually increases, when the height of the cooling medium exceeds the height of the lower connecting ring 320, the cooling medium flows into the lower chamber 212 through the through hole 221, thereby realizing the self-circulation of the cooling medium between the upper chamber 211 and the lower chamber 212.

[0049] It should also be noted that, in order to limit the moving distance of the sensing tube 360 ​​, specifically, a vertical slide groove 331 is opened on the inner peripheral wall of the upper connecting ring 330 , and a slider 362 is provided on the outer peripheral wall of the sensing tube 360 ​​, and the slider 362 is slidably connected in the vertical slide groove 331 .

[0050] In a further embodiment, Figure 2 , Figure 4 and Figure 5 As shown, the material storage unit 350 includes a lower fixed ring 351, a sealing ring 352, an intermediate ring 353 and a plurality of support rods 354. The lower fixed ring 351 is coaxially arranged on the connecting rod 340, the intermediate ring 353 is coaxially slidably sleeved on the connecting rod 340, and the intermediate ring 353 is elastically connected to the connecting rod 340. Specifically, the lower fixed ring 351 and the intermediate ring 353 are connected by a first spring 355, and a plurality of support rods 354 are circumferentially equidistantly arranged on the outer peripheral wall of the intermediate ring 353, and one end of the support rod 354 away from the intermediate ring 353 is arranged on the inner peripheral wall of the sealing ring 352. Both the lower fixed ring 351 and the sealing ring 352 can be slidably sealed with the lower connecting ring 320.

[0051] In the initial state, under the elastic force of the first spring 355, there is a gap between the upper surface of the lower fixing ring 351 and the lower surface of the sealing ring 352. When the temperature in the upper chamber 211 rises, the connecting rod 340 moves upward, and the connecting rod 340 drives the lower fixing ring 351 to move upward synchronously. Since there is a sliding seal between the sealing ring 352 and the lower connecting ring 320, when the sealing ring 352 and the lower connecting ring 320 are in sliding contact, as the connecting rod 340 continues to move upward, the first spring 355 is compressed, and the sealing ring 352 is The lower surface of the lower fixing ring 351 abuts against the upper surface of the lower fixing ring 351. Then, as the connecting rod 340 continues to move upward, the sealing ring 352 and the lower fixing ring 351 continue to move upward while carrying the cooling medium. When the connecting rod 340 moves upward until the sealing ring 352 is no longer in contact with the lower connecting ring 320, the sealing ring 352 moves away from the lower fixing ring 351 under the action of the spring force. At this time, the lower fixing ring 351 is no longer abutted against the sealing ring 352, so the cooling medium carried by the sealing ring 352 and the lower fixing ring 351 flows into the upper chamber 211.

[0052] In a further embodiment, Figure 6 As shown, a plurality of heat dissipation fins 361 are disposed on the top of the induction tube 360 ​​.

[0053] This configuration is to enhance the heat dissipation effect of the top area of ​​the induction tube 360 ​​so that the temperature of the top area of ​​the induction tube 360 ​​is lower than the temperature of the upper chamber 211, so that the vaporized cooling medium can be condensed into liquid cooling medium after the temperature is lowered.

[0054] In a further embodiment, Figure 2 As shown, an air extraction component 500 is provided on the top of the cooling cylinder 200, and the air extraction component 500 is used to reduce the air pressure in the liquid storage chamber.

[0055] The purpose of providing the air extraction component 500 is to reduce the air pressure in the liquid storage chamber so that the air pressure in the liquid storage chamber is less than the standard atmospheric pressure, thereby reducing the boiling point of the cooling medium, so as to improve the cooling effect of the cooling medium.

[0056] In a further embodiment, Figure 6 As shown, the exhaust assembly 500 includes a movable ring 510 and a screw 520. An annular groove 530 is opened at the top center of the cooling cylinder 200. A plurality of ventilation grooves 531 are opened on the peripheral wall of the annular groove 530. The plurality of ventilation grooves 531 correspond to the plurality of sub-chambers one by one. The axis of the screw 520 is vertical. The movable ring 510 is coaxial with the annular groove 530 and the movable ring 510 is threadedly connected with the screw 520. An exhaust pipe 511 is opened at the top of the movable ring 510, and the lower end of the exhaust pipe 511 passes downward through the movable ring 510.

[0057] After the cooling medium is stored in the upper chamber 211 and the lower chamber 212, the staff rotates the screw 520. At this time, under the driving action of the screw 520, the movable ring 510 is forced to move upward. At this time, the lower surface of the movable ring 510 is no longer in contact with the bottom surface of the annular groove 530. At this time, the lower end of the suction pipe 511 is connected to the annular groove 530, so that the upper end of the suction pipe 511 is connected to the suction pump, and the gas in the liquid storage chamber is pumped out by the suction pump, so that the liquid in the liquid storage chamber is The air pressure in the liquid storage chamber is lower than the standard atmospheric pressure. After the air pressure in the liquid storage chamber is lower than the standard atmospheric pressure, the staff first closes the exhaust pipe 511, and then reversely rotates the screw 520 to force the movable ring 510 to move downward, so that the lower surface of the movable ring 510 contacts the bottom surface of the annular groove 530. At this time, the air pressure in the liquid storage chamber is lower than the standard atmospheric pressure, and at this time, the multiple ventilation grooves 531 are blocked by the side of the movable ring 510 and cannot be connected to each other. Therefore, each sub-chamber is independent of each other and is not connected to each other.

[0058] It should also be noted that an upper liquid inlet 250 is provided on the outside of the cooling cylinder 200, and the upper liquid inlet 250 is used to add cooling medium into the upper chamber 211. A lower liquid inlet 240 is also provided on the outside of the cooling cylinder 200, and the lower liquid inlet 240 is used to add cooling medium into the lower chamber 212.

[0059] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. An insulating sealed epoxy solid-sealed pole, characterized in that: include: main body; A cooling cylinder, which is sleeved on the outside of the main body; A liquid storage chamber is provided inside the cooling cylinder, and the liquid storage chamber is separated into an upper chamber and a lower chamber in the vertical direction, and cooling medium is stored in both the upper chamber and the lower chamber; A liquid delivery component is disposed in the liquid storage chamber and is used to deliver the cooling medium in the lower chamber to the upper chamber in a directional manner; The liquid delivery component is configured so that the delivery amount of the cooling medium of the liquid delivery component is positively correlated with the temperature in the upper chamber; When the amount of the cooling medium in the upper chamber exceeds a preset value, the cooling medium in the upper chamber can flow back into the lower chamber.

2. The insulating sealed epoxy solid-sealed pole according to claim 1, characterized in that: The upper chamber and the lower chamber are divided into a plurality of sub-chambers at equal intervals in the circumferential direction, and the plurality of sub-chambers of the upper chamber correspond one to one with the plurality of sub-chambers of the lower chamber; There are multiple liquid delivery components, and the multiple liquid delivery components correspond one-to-one to the multiple sub-chambers.

3. An insulating sealed epoxy solid-sealed pole according to claim 1 or 2, characterized in that: The part of the main body corresponding to the upper chamber of the cooling cylinder is covered with a capillary fiber net.

4. The insulating sealed epoxy solid-sealed pole according to claim 2, characterized in that: An isolation plate is arranged on the inner wall of the liquid storage chamber, and the isolation plate is used to isolate the liquid storage chamber into an upper chamber and a lower chamber in the vertical direction. A plurality of through holes are opened on the isolation plate, and the plurality of through holes correspond one by one to a plurality of liquid delivery components, so that the liquid delivery components can directionally transport the cooling medium in the lower chamber to the upper chamber through the through holes.

5. The insulating sealed epoxy solid-sealed pole according to claim 4, characterized in that: The liquid delivery assembly includes a columnar mesh tube, a lower connecting ring, an upper connecting ring, a connecting rod and a material storage unit. The columnar mesh tube is coaxial with the through hole, the lower end of the columnar mesh tube is arranged at the bottom of the liquid storage chamber, the upper end of the columnar mesh tube is arranged on the lower surface of the isolation plate, the lower connecting ring is also coaxial with the through hole, the lower end of the lower connecting ring is arranged on the upper surface of the isolation plate, the upper connecting ring is also coaxial with the through hole, the upper surface of the upper connecting ring is arranged on the top of the liquid storage chamber, the connecting rod is also coaxial with the through hole and the connecting rod is located in the through hole, there are multiple material storage units, and the multiple material storage units are arranged at intervals along the axis of the connecting rod. When the material storage unit moves to a preset distance above the lower connecting ring, the material storage unit can be opened to allow the cooling medium in the material storage unit to flow into the upper chamber.

6. The insulating sealed epoxy solid-sealed pole according to claim 5, characterized in that: The material storage unit comprises a lower fixing ring, a sealing ring, an intermediate ring and a plurality of supporting rods, wherein the lower fixing ring is coaxially arranged on the connecting rod, the intermediate ring is coaxially slidably sleeved on the connecting rod, and the intermediate ring is elastically connected to the connecting rod, a plurality of supporting rods are circumferentially arranged on the intermediate ring at equal intervals, and one end of the supporting rod away from the intermediate ring is arranged on the inner circumferential wall of the sealing ring; The lower fixing ring and the sealing ring can both slide and seal with the lower connecting ring.

7. The insulating sealed epoxy solid-sealed pole according to claim 5, characterized in that: The top of the cooling cylinder is provided with a plurality of upper through holes, and the plurality of upper through holes correspond to the plurality of through holes one by one; The liquid delivery assembly also includes a sensing cylinder, which is slidably sealed with an upper connecting ring, coaxially fixedly connected with a connecting rod, and elastically connected with the isolation plate.

8. The insulating sealed epoxy solid-sealed pole according to claim 7, characterized in that: A plurality of heat dissipation fins are arranged on the top of the induction tube.

9. The insulating sealed epoxy solid-sealed pole according to claim 1, characterized in that: The top of the cooling cylinder is provided with an air extraction component, which is used to reduce the air pressure in the liquid storage chamber.

10. The insulating sealed epoxy solid-sealed pole according to claim 9, characterized in that: The air extraction assembly includes a moving ring and a screw rod. An annular groove is provided at the top center of the cooling cylinder. A plurality of ventilation grooves are provided on the peripheral wall of the annular groove. The plurality of ventilation grooves correspond to the plurality of sub-chambers one by one. The axis of the screw rod is vertical. The moving ring is coaxial with the annular groove and the moving ring is threadedly connected with the screw rod. An air extraction pipe is provided on the top of the moving ring, and the lower end of the air extraction pipe penetrates downwardly through the moving ring.

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