CN210039932U - Heat dissipation type power capacitor - Google Patents

Abstract

The utility model discloses a heat dissipation type power capacitor, including casing and the base of being connected with the casing, be equipped with the base plate in the casing, the heat-conducting plate, the cooling plate, install the circulating pump on the base and the liquid reserve tank of being connected with the circulating pump, its inside coolant liquid that is equipped with, the slope is provided with first louvre in the lateral wall of shell, install power capacitor's circuit board on the base plate, the second louvre has been seted up all around to the cooling plate, direction of height in the cooling plate is equipped with interconnect's first in proper order, second and third pipeline, it is first, second and third pipeline are the inside cyclic annular pipe that is equipped with the cooling medium, and first, the centre of a circle of second and third pipeline is on same axis, first pipeline and heat-conducting plate contact, advance of circulating pump, the liquid outlet respectively with third pipeline and first pipe connection. In this way, the utility model discloses can improve power capacitor's radiating efficiency, the reinforcing radiating effect prevents that its inside device from causing the damage because of the heat dissipation problem, and then increase of service life.

Description

Heat dissipation type power capacitor

Technical Field

The utility model relates to a power capacitor field especially relates to a heat dissipation type power capacitor.

Background

The power capacitor is a capacitor used for an electric power system, and is widely applied to a plurality of fields such as a factory distribution system, a residential area distribution system, a traffic tunnel distribution system and the like. When the power capacitor is in a working state, internal devices of the power capacitor can generate a certain amount of heat during operation, and if the heat cannot be dissipated in time, the heat can be accumulated in the power capacitor, so that the internal devices of the power capacitor can be easily damaged. The existing power capacitor mostly adopts a cooling fan to dissipate heat, the heat dissipation efficiency of the heat dissipation mode is low, and the heat inside the power capacitor cannot be dissipated in time, so that internal elements are damaged, and the service life of the power capacitor is shortened. Therefore, research and improvement thereof are required.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a heat dissipation type power capacitor.

In order to solve the technical problem, the utility model discloses a technical scheme be: provide a

A heat dissipation type power capacitor comprises a shell and a base connected with the shell, wherein a base plate, a heat conducting plate and a cooling plate are sequentially arranged in the shell along the height direction, a circulating pump and a liquid storage tank connected with the circulating pump are arranged on the base, a heat dissipation fan is installed on the liquid storage tank, cooling liquid is filled in the liquid storage tank, a plurality of first heat dissipation holes are obliquely arranged on the side wall of the shell, a circuit board of the power capacitor is installed on the base plate, second heat dissipation holes are formed in the periphery of the cooling plate, a first pipeline, a second pipeline and a third pipeline are sequentially arranged in the cooling plate along the height direction, the first pipeline, the second pipeline and the third pipeline are all annular pipes, the circle centers of the first pipeline, the second pipeline and the third pipeline are on the same axis, the first pipeline is in contact with the heat conducting plate, and a liquid inlet pipe is arranged on one, the liquid inlet pipe is connected with a liquid outlet connected with the circulating pump, cooling working media are arranged in the first pipeline, the second pipeline and the third pipeline, the first pipeline is connected with the second pipeline through a first connecting pipe, the second pipeline is connected with the third pipeline through a second connecting pipe, a capillary structure is formed in the first connecting pipe and the second connecting pipe, a liquid outlet pipe is arranged on the third pipeline, and the liquid outlet pipe is connected with a liquid inlet of the circulating pump.

Preferably, the first heat dissipation holes are arranged at intervals along the height direction of the shell, an installation groove is formed between every two adjacent first heat dissipation holes, and a heat dissipation fan is installed in the installation groove.

Preferably, the first heat dissipation hole is inclined downwards, and the inclination angle is thirty degrees to forty-five degrees.

Preferably, the first conduit has a larger pore size than the second conduit and the third conduit

And (4) the aperture.

Preferably, a plurality of radiating fins are arranged on the second pipeline and the third pipeline, and the plurality of radiating fins are arranged in the circumferential direction of the second pipeline or the third pipeline.

Preferably, heat conduction silicone grease is arranged between the heat conduction plate and the bottom of the base plate, and heat dissipation silicone is arranged at the contact part of the first pipeline and the heat conduction plate.

Preferably, a heat dissipation fan is arranged in the cooling plate and close to the first heat dissipation hole.

Preferably, the number of the first connecting pipes is two, and the two first connecting pipes are symmetrically distributed on two sides of the first pipeline; the number of the second connecting pipes is two, and the two second connecting pipes are symmetrically distributed on two sides of the second pipeline.

Be different from prior art's condition, the beneficial effects of the utility model are that:

1. set up the first louvre of slope in the both sides of casing, not only can play ventilation cooling's effect, can also carry out the separation to the outside dust of power capacitor, prevent that the dust from getting into inside the power capacitor, cause inside dust accumulation, make the device ageing, installation fan in the mounting groove between two upper and lower first louvres simultaneously, further strengthen power capacitor's ventilation cooling effect.

2. The heat conducting plate and the cooling plate are sequentially arranged below the substrate provided with the circuit board to cool and radiate the electric board, the first pipeline, the second pipeline and the third pipeline are sequentially arranged in the cooling plate along the height direction, the first pipeline, the second pipeline and the third pipeline are all annular pipes, the circle centers of the first pipeline, the second pipeline and the third pipeline are on the same axis, cooling working media are respectively arranged in the first pipeline, the second pipeline and the third pipeline, cooling liquid is introduced into the first pipeline through a circulating pump and takes away heat generated after the phase change of the cooling working media, the cooling liquid flows from the first pipeline, the second pipeline and the third pipeline, so that the heat is gradually radiated from the inner center of the cooling plate to the outer part of the shell, and finally, the heat is radiated from the inner part of the power capacitor through the second radiating holes and the radiating fan arranged on the cooling plate, thereby realizing efficient gradual radiating, and the process is circularly carried out through the action of the circulating pump, so that the heat dissipation effect and the heat dissipation efficiency are further improved, further, the damage of devices in the power capacitor caused by the heat dissipation problem is prevented, and the service life of the power capacitor is prolonged.

Drawings

Fig. 1 is a schematic structural diagram of a heat dissipation power capacitor according to the present invention;

fig. 2 is a schematic view of a connection structure of the first, second, and third pipes of the heat dissipation power capacitor of the present invention;

fig. 3 is a schematic diagram of the internal mechanism of the first connecting pipe and the second connecting pipe of the heat dissipation power capacitor of the present invention.

Reference numbers in the figures: 1-shell, 101-first radiating hole, 102-second radiating hole, 103-mounting groove, 2-base, 3-base plate, 4-heat conducting plate, 5-cooling plate, 501-first pipeline, 502-second pipeline, 503-third pipeline, 6-circulating pump, 7-liquid storage tank, 8-radiating fan, 9-circuit board, 10-liquid inlet pipe, 11-first connecting pipe, 12-second connecting pipe, 13-liquid outlet pipe and 14-radiating fin.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model comprises a shell 1 and a base 2 connected with the shell 1, a base plate 3, a heat conducting plate 4 and a cooling plate 5 are arranged in the shell 1 along the height direction in sequence, a circulating pump 6 and a liquid storage tank 7 connected with the circulating pump 6 are arranged on the base 2, a cooling fan 8 is arranged on the liquid storage tank 7, the cooling liquid can be water or antifreeze liquid, a plurality of first radiating holes 101 are obliquely arranged on the side wall of the shell 1, a circuit board 9 of a power capacitor is arranged on the base plate 3, second radiating holes 102 are arranged around the cooling plate 5, a first pipeline 501, a second pipeline 502 and a third pipeline 503 are arranged in sequence from top to bottom along the height direction in the cooling plate 5, the first pipeline 501, the second pipeline 502 and the third pipeline 503 are all annular pipes taking the center of the inside of the cooling plate 5 as the center of a circle, and the centers of the first pipeline 501, the second pipeline 502 and the third pipeline 503 are on the same axis, the first pipeline 501 is in contact with the heat conducting plate 4, a liquid inlet pipe 10 is arranged on one side of the first pipeline 501, the liquid inlet pipe 10 is connected with a liquid outlet connected with the circulating pump 6, cooling working media are arranged in the first pipeline 501, the second pipeline 502 and the third pipeline 503, the cooling working media are phase-change materials, the phase-change materials have the characteristics of low boiling point and high heat exchange coefficient, the heat of a power device is absorbed through vaporization, the heat generated during the operation of the device is quickly led out through liquefaction and heat release, the cooling working media can be selected from one or a mixture of more of ethylene glycol, acetone, methanol, refrigerants (R134a, R410A and the like) and ammonia, the first pipeline 501 is connected with the second pipeline 502 through at least two first connecting pipes 11, the second pipeline 502 is connected with the third pipeline 503 through at least two second connecting pipes 12, and capillary structure connecting pipes are formed inside the first connecting pipes 11 and the second connecting pipes 12, and first connecting pipe 11 and second connecting pipe 12 can be two, two first connecting pipes 11 symmetric distribution are in the both sides of first pipeline 501, two second connecting pipes 12 symmetric distribution are in the both sides of second pipeline 502, of course in other embodiments, first connecting pipe 11 or second connecting pipe 12 also can be four or six, can further accelerate the heat dissipation in first pipeline 501 and second pipeline 502 like this, be equipped with drain pipe 13 on third pipeline 503, drain pipe 13 is connected with the inlet of circulating pump 6.

Specifically, the heat conducting silicone grease is arranged between the heat conducting plate 4 and the bottom of the substrate 3, the heat conducting silicone grease is a high heat conducting insulating organic silicon material, and has the characteristics of low oil separation, high and low temperature resistance, water resistance, ozone resistance, weather aging resistance and the like. First louvre 101 sets up along casing 1's direction of height interval, and set up mounting groove 103 between two adjacent first louvres 101 from top to bottom, install radiator fan 8 in the mounting groove 103, further strengthen the radiating effect on the basis that ventilates at first louvre 101, first louvre 101 downward sloping sets up, and inclination is between thirty degrees to forty-five degrees, can prevent like this that external dust from the inside that first louvre 101 got into power capacitor, power capacitor's dust proofness has been strengthened, the inside dust accumulation of power capacitor has been avoided.

Further, the aperture of the first pipeline 501 is larger than the apertures of the second pipeline 502 and the third pipeline 503, the aperture of the first pipeline 501 can maximally ensure the contact area between the first pipeline 501 and the heat conducting plate 4, so as to take away the heat dissipated during the operation of the device as much as possible, a plurality of radiating fins 14 are arranged on the second pipeline 502 and the third pipeline 503, and the plurality of radiating fins 14 are arranged in the circumferential direction of the second pipeline 502 or the third pipeline 503, so that the radiating area can be further increased, and the purpose of enhancing the radiating effect is achieved, and the radiating fins 14 can be steel-aluminum composite fins, so that the high pressure resistance of steel is achieved, and the high-efficiency heat conductivity of aluminum is also achieved. A heat radiation fan 8 may be installed in the side wall of the cooling plate 5, so that the heat discharged from the heat radiation fins 14 is conducted out of the housing 1 of the power capacitor by the heat radiation fan 8, thereby achieving a better heat radiation effect.

The working principle is as follows: when the power capacitor works to generate heat, the first heat dissipation holes 101 and the heat dissipation fans 8 between the first heat dissipation holes 101 adjacent up and down act together to take part of the heat out of the shell 1, the other part of the heat is transferred to the first pipeline 501 through the heat conduction plate 4, so that the temperature in the first pipeline 501 is raised, the cooling working medium in the first pipeline 501 absorbs heat and is gasified and then enters the second pipeline 502 through the first connecting pipe 11, the cooling working medium in the second pipeline 502 also absorbs heat and is gasified and enters the third pipeline 503 through the second connecting pipe 12, at the moment, the circulating pump 6 conveys the cooling liquid from the liquid storage tank 7 to the first pipeline 501 through the liquid inlet pipe 10, the cooling liquid enters the second pipeline 502 through the first connecting pipe 11 and then enters the third pipeline 503 through the second connecting pipe 12 to take the heat of the cooling working medium away, and the heat is dissipated through the second pipeline 502 and the heat dissipation fins 14 on the third pipeline 503, the heat dissipation is gradually realized from inside to outside, the heat dissipation is accelerated to the outside of the shell 1 by the cooling fan 8 on the side wall of the cooling plate 5, and finally the cooling liquid enters the circulating pump 6 through the liquid outlet pipe 13 of the third pipeline 503 to start the next heat dissipation circulation.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims (8)

1. A heat-dissipating power capacitor, comprising: the cooling device comprises a shell and a base connected with the shell, wherein a base plate, a heat-conducting plate and a cooling plate are sequentially arranged in the shell along the height direction, a circulating pump and a liquid storage tank connected with the circulating pump are arranged on the base, a cooling fan is installed on the liquid storage tank, cooling liquid is filled in the liquid storage tank, a plurality of first heat dissipation holes are obliquely arranged on the side wall of the shell, a circuit board of a power capacitor is installed on the base plate, second heat dissipation holes are formed in the side wall of the shell on the periphery of the cooling plate, a first pipeline, a second pipeline and a third pipeline are sequentially arranged in the cooling plate along the height direction, the first pipeline, the second pipeline and the third pipeline are all annular pipes, the circle centers of the first pipeline, the second pipeline and the third pipeline are on the same axis, the first pipeline is in contact with the heat-conducting plate, a liquid inlet pipe is arranged on one side of the, all be equipped with cooling working medium in first pipeline, second pipeline and the third pipeline to first pipeline is connected through two at least first connecting pipes with the second pipeline, the second pipeline is connected through two at least second connecting pipes with the third pipeline, first connecting pipe, the inside capillary structure that forms of second connecting pipe, be equipped with the drain pipe on the third pipeline, the drain pipe with the inlet of circulating pump is connected.

2. The heat dissipation type power capacitor as claimed in claim 1, wherein the first heat dissipation holes are spaced apart from each other along a height direction of the housing, and a mounting groove is formed between two vertically adjacent first heat dissipation holes, and a heat dissipation fan is mounted in the mounting groove.

3. The heat dissipating power capacitor of claim 2, wherein the first heat dissipation hole is tilted downward at an angle of between thirty degrees and forty-five degrees.

4. The heat dissipating power capacitor of claim 1, wherein the first conduit has a larger bore diameter than the second conduit and the third conduit.

5. The heat dissipation type power capacitor as claimed in claim 4, wherein a plurality of heat dissipation fins are disposed on each of the second pipe and the third pipe, and the plurality of heat dissipation fins are arranged in a circumferential direction of the second pipe or the third pipe.

6. The heat dissipation power capacitor of claim 1, wherein a heat conductive silicone grease is disposed between the heat conductive plate and the bottom of the substrate, and a portion of the first tube in contact with the heat conductive plate is disposed with a heat dissipation silicone grease.

7. The heat dissipating power capacitor of claim 1, wherein a heat dissipating fan is disposed inside the cooling plate near the first heat dissipating hole.

8. The heat dissipation type power capacitor as claimed in claim 1, wherein the number of the first connecting pipes is two, and the two first connecting pipes are symmetrically distributed on two sides of the first pipeline; the number of the second connecting pipes is two, and the two second connecting pipes are symmetrically distributed on two sides of the second pipeline.

Images