Intelligent harmonic and interference resistant capacitor device

Abstract

The application discloses an intelligent anti-harmonic anti-interference capacitor device, which comprises an anti-harmonic capacitor shell, a heat conduction part and a plurality of vertically arranged capacitor cores are arranged in the anti-harmonic capacitor shell, the plurality of capacitor cores are arranged along the circumference of the heat conduction part, the heat conduction part is in contact with the plurality of capacitor cores, the center of the heat conduction part is provided with a through heat dissipation channel, and cooling water passes through the heat dissipation channel to take away the heat of the heat conduction part. By arranging the through heat dissipation channel in the center of the heat conduction part and arranging the cooling water to flow through the heat dissipation channel, when the capacitor cores generate heat, the heat conduction part guides the heat of the capacitor cores out, and the cooling water flows through the heat dissipation channel at the same time, so that the cooling water quickly takes away the heat on the heat conduction part, the purpose of rapid heat dissipation is achieved, and the situation that the capacitor cores locally accumulate heat to cause surface bulging or shell expansion is avoided.

Description

Technical Field

[0001] This invention relates to the field of capacitor technology, and more specifically to an intelligent anti-harmonic interference capacitor device. Background Technology

[0002] A capacitor is a component that stores electrical charge and energy. It consists of two conductors placed close together with a non-conductive insulating medium in between. When a voltage is applied between the two plates of a capacitor, the capacitor stores charge. Capacitors play an important role in circuits such as tuning, bypassing, coupling, and filtering. With the rapid development of electronic information technology, capacitors are widely used in digital electronic products.

[0003] For example, patent CN210575550U, published on May 19, 2020, discloses an anti-harmonic power capacitor, including a shell and a cover. The cover is located on the upper surface of the shell and is detachably connected. A heat-conducting block is fixedly connected to the bottom of the shell. A capacitor core is fixedly connected to the upper end of the heat-conducting block. A heat-conducting pipe is fixedly connected inside the capacitor core, and the lower end of the heat-conducting pipe extends into the interior of the heat-conducting block. An upper limit plate is fixedly connected to the upper end of the capacitor core, and a lower limit plate is fixedly connected to the lower end of the capacitor core. Insulating paper is provided on the outside of the capacitor core, and the insulating paper wraps around the outer surfaces of the capacitor core, the upper limit plate, and the lower limit plate. This patent, by setting up heat-conducting pipes and heat-conducting blocks, promptly conducts the heat of the capacitor core to the surface of the capacitor, reduces the temperature difference between the inside and the surface of the capacitor, and increases the ambient temperature during capacitor operation.

[0004] When the capacitor is in use, the heat generated by the capacitor core is dissipated through the heat pipe and heat block in contact with it. In this contact-type heat dissipation method, the heat generated by the capacitor core can only be conducted through the contact surface. Hot spots are difficult to dissipate quickly, which can easily cause local heat accumulation in the capacitor. This can lead to excessive internal pressure in the capacitor, resulting in bulging at the top or expansion of the outer shell. Summary of the Invention

[0005] The purpose of this invention is to provide an intelligent anti-harmonic interference capacitor device to overcome the above-mentioned shortcomings in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: An intelligent anti-harmonic interference capacitor device includes an anti-harmonic capacitor housing. A heat-conducting part and a plurality of vertically arranged capacitor cores are disposed inside the anti-harmonic capacitor housing. The plurality of capacitor cores are arranged at intervals along the circumference of the heat-conducting part. The heat-conducting part is in contact with the plurality of capacitor cores. A through heat dissipation channel is disposed in the center of the heat-conducting part, and cooling water passes through the heat dissipation channel to remove the heat of the heat-conducting part.

[0007] The above-mentioned intelligent anti-harmonic interference capacitor device includes a heat-conducting part comprising a central column, a plurality of heat-conducting plates arranged on the outer side of the column, the plurality of heat-conducting plates being arranged at intervals along the circumference of the column, and a heat-conducting sleeve provided at the end of the heat-conducting plate away from the column, the heat-conducting sleeve being sleeved on the outer side of the capacitor core.

[0008] In the aforementioned intelligent anti-harmonic interference capacitor device, multiple heat dissipation fins are evenly arranged on the side wall of the heat-conducting plate.

[0009] The aforementioned intelligent anti-harmonic interference capacitor device includes an anti-harmonic capacitor housing comprising a box and a top cover, wherein the top cover is detachably mounted on the box.

[0010] The aforementioned intelligent anti-harmonic interference capacitor device has an annular partition fixedly installed inside the housing of the anti-harmonic capacitor. The partition divides the internal space of the housing into an inner ring and an outer ring. The inner ring is used to house the capacitor core and the heat-conducting part, and the outer ring is filled with coolant.

[0011] In the aforementioned intelligent anti-harmonic interference capacitor device, two through holes are provided on the partition plate, which connect the inner ring portion and the outer ring portion. Both through holes are connected to the two ends of the heat dissipation channel through pipes to form a circulating water path.

[0012] The aforementioned intelligent anti-harmonic interference capacitor device also includes a power mechanism within its outer ring, which provides power for the circulation of water in the circulating water path.

[0013] The aforementioned intelligent anti-harmonic interference capacitor device has multiple heat dissipation vents on both the upper and lower end faces of the anti-harmonic capacitor housing for heat dissipation.

[0014] The aforementioned intelligent anti-harmonic interference capacitor device further includes a drive fan inside the anti-harmonic capacitor housing, which is fixedly installed on the end face of the upper cover located inside the anti-harmonic capacitor housing.

[0015] The aforementioned intelligent anti-harmonic interference capacitor device also includes a drain outlet at the bottom outer side of the anti-harmonic capacitor housing. A ball valve is installed at the end of the drain outlet, which is used to discharge cooling water from the outer ring portion.

[0016] The beneficial effects of the present invention are as follows: In the above technical solution, the present invention provides an intelligent anti-harmonic interference capacitor device, which provides a through heat dissipation channel in the center of the heat-conducting part, and cooling water flows through the heat dissipation channel. When the capacitor core heats up, the heat-conducting part conducts the heat of the capacitor core out, and at the same time, the cooling water flows through the heat dissipation channel, and the cooling water quickly carries away the heat on the heat-conducting part, thereby achieving the purpose of rapid heat dissipation and avoiding the occurrence of local heat accumulation in the capacitor core that leads to surface bulging or shell expansion. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the structure of an intelligent anti-harmonic interference capacitor device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram showing the state of the upper cover of the anti-harmonic capacitor housing when it is open, according to an embodiment of the present invention. Figure 3 This is a schematic diagram of the internal structure of the box provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the heat-conducting part provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the circulating water circuit structure provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the engagement of a shunt hose and a heat-conducting sleeve according to another embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Anti-harmonic capacitor housing; 11. Box body; 12. Top cover; 13. Partition; 131. Inner ring; 132. Outer ring; 14. Through hole; 15. Power mechanism; 2. Heat-conducting part; 21. Column; 22. Heat-conducting plate; 23. Heat-conducting sleeve; 24. Heat dissipation fins; 3. Capacitor core; 4. Heat dissipation channel; 5. Heat dissipation vent; 6. Drive fan; 7. Drain outlet; 8. Ball valve; 9. Clearance hole; 10. Diverter hose. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of the present invention, the following will be described in conjunction with the appendix. Figure 1-6 The present invention will be described in further detail below.

[0021] This invention provides an intelligent anti-harmonic interference capacitor device, including an anti-harmonic capacitor housing 1. The inner side of the anti-harmonic capacitor housing 1 is provided with a heat-conducting part 2 and a plurality of vertically arranged capacitor cores 3. The plurality of capacitor cores 3 are arranged at intervals along the circumference of the heat-conducting part 2. The heat-conducting part 2 is in contact with the plurality of capacitor cores 3. A through heat dissipation channel 4 is provided in the center of the heat-conducting part 2. Cooling water passes through the heat dissipation channel 4 to remove the heat from the heat-conducting part 2.

[0022] Specifically, in this embodiment, the anti-harmonic capacitor housing 1 is cylindrical in shape, and multiple vertically arranged capacitor cores 3 are installed inside the anti-harmonic capacitor housing 1. When the equipment is running, there are a large number of nonlinear loads such as frequency converters and rectifiers in the circuit of the equipment, which will generate a lot of high-order harmonics. The capacitor (i.e., the capacitor core 3 in this embodiment) has extremely low capacitive reactance to high-frequency harmonics, which causes a large amount of harmonic current to surge into the capacitor, far exceeding its rated power frequency current. The increase in current directly causes significant Joule heating. The larger the current, the more the heat generation power increases exponentially, causing the capacitor core 3 to heat up as a whole. In order to dissipate the heat of the capacitor core 3, the existing heat dissipation method is usually contact heat dissipation, which uses heat pipes or heat blocks to contact the capacitor core 3 and conducts the heat away from the capacitor core 3 through heat conduction at the contact surface, thus completing the heat dissipation treatment of the capacitor core 3.

[0023] The shortcomings of the existing technology are: the heat dissipation path of the contact heat dissipation method is single, the temperature uniformity is poor, and the heat can only be conducted along the contact surface, which is difficult to diffuse quickly. This easily causes local heat concentration, resulting in local heat accumulation on the surface of the capacitor core 3. When local heat accumulation occurs in the capacitor core 3, the sustained high temperature will accelerate the aging of the internal dielectric of the capacitor core 3, causing the equivalent series resistance (ESR) to rise rapidly, which in turn leads to more serious heat generation, forming a vicious cycle. Furthermore, local overheating will cause the internal impregnating agent or electrolyte to expand and vaporize due to heat, resulting in a local increase in internal pressure. Under long-term effects, the outer shell of the capacitor core 3 will show local slight bulging and deformation, and in severe cases, leakage, seepage, or even liquid spraying will occur, seriously affecting the service life of the capacitor core 3.

[0024] To address the aforementioned issues, in this embodiment, in addition to the heat-conducting part 2 dissipating heat from the capacitor core 3, a through-flow heat dissipation channel 4 is also provided in the center of the heat-conducting part 2. Cooling water flows through the heat dissipation channel 4. When the capacitor core 3 heats up, the heat-conducting part 2 conducts the heat away from the capacitor core 3, while the cooling water quickly carries away the heat from the heat-conducting part 2, achieving rapid heat dissipation and preventing localized heat accumulation in the capacitor core 3 that could lead to surface bulging or shell expansion.

[0025] Preferably, the heat-conducting part 2 includes a central column 21, and a plurality of heat-conducting plates 22 are arranged on the outer side of the column 21. The plurality of heat-conducting plates 22 are arranged at intervals along the circumference of the column 21. A heat-conducting sleeve 23 is provided at the end of the heat-conducting plate 22 away from the column 21. The heat-conducting sleeve 23 is sleeved on the outer side of the capacitor core 3.

[0026] Specifically, in this embodiment, the heat dissipation channel 4 is formed on the column 21, and the heat dissipation channel 4 is coaxially arranged with the column 21. The length of the heat-conducting sleeve 23 is longer than the length of the capacitor core 3. When the capacitor core 3 is inserted into the heat-conducting sleeve 23, the entire capacitor core 3 is wrapped by the heat-conducting sleeve 23. When the capacitor core 3 is working and generating heat, the heat-conducting sleeve 23 is in contact with the entire capacitor core 3. The heat-conducting sleeve 23 has the maximum heat conduction efficiency for the capacitor core 3 and can quickly remove the heat from the capacitor core 3.

[0027] Furthermore, a plurality of heat dissipation fins 24 are evenly arranged on the sidewall of the heat-conducting plate 22.

[0028] Specifically, multiple heat dissipation fins 24 can significantly expand the effective heat dissipation area. Within a limited installation space, the structure of multiple parallel heat dissipation fins 24 can multiply the originally small heat source surface, significantly increasing the contact area with air, allowing heat to dissipate more quickly through convection, and effectively reducing the temperature rise of the heat source.

[0029] Meanwhile, a drive fan 6 is also provided inside the anti-harmonic capacitor housing 1. The drive fan 6 is fixedly installed on the end face of the upper cover 12 located inside the anti-harmonic capacitor housing 1. Multiple heat dissipation vents 5 are provided on both the upper and lower end faces of the anti-harmonic capacitor housing 1 for heat dissipation.

[0030] Specifically, a temperature sensor is also installed inside the anti-harmonic capacitor housing 1. The temperature sensor is used to monitor the temperature inside the anti-harmonic capacitor housing 1. The temperature sensor is electrically connected to the drive fan 6. When the temperature inside the anti-harmonic capacitor housing 1 reaches the set upper limit temperature, the temperature sensor sends a working signal to the drive fan 6, and the drive fan 6 works to accelerate the airflow inside the anti-harmonic capacitor housing 1. The hot air moves to the outside of the anti-harmonic capacitor housing 1 through the heat dissipation port 5 to achieve the purpose of rapid heat dissipation.

[0031] To further improve the heat dissipation efficiency inside the anti-harmonic capacitor housing 1, the anti-harmonic capacitor housing 1 includes a box body 11 and a top cover 12, the top cover 12 being detachably mounted on the box body 11; an annular partition 13 is fixedly installed inside the box body 11 of the anti-harmonic capacitor housing 1, the partition 13 dividing the internal space of the box body 11 into an inner ring portion 131 and an outer ring portion 132, the inner ring portion 131 being used to house the capacitor core 3 and the heat-conducting part 2, and the outer ring portion 132 being filled with coolant; two through holes 14 are provided on the partition 13, the two through holes 14 connecting the inner ring portion 131 and the outer ring portion 132, and both through holes 14 are connected to both ends of the heat dissipation channel 4 through pipes to form a circulating water path; a power mechanism 15 is also provided inside the outer ring, the power mechanism 15 providing power for the circulation of water in the circulating water path.

[0032] Specifically, in this embodiment, the power mechanism 15 can be a small water pump, which is connected to one of the through holes 14. As the small water pump operates, it pumps the cooling water inside the outer ring 132 into the heat dissipation channel 4 through a pipe. The cooling water originally located in the heat dissipation channel 4 enters the outer ring 132 from another pipe and the through hole 14, forming a water circulation. The circulating cooling water can quickly remove the heat from the heat-conducting part 2, achieving rapid heat dissipation of the heat-conducting part 2 and further avoiding local heat accumulation in the capacitor core 3.

[0033] Preferably, to facilitate the replacement or replenishment of the cooling water inside the outer ring portion 132, a drain port 7 is provided at the bottom outer side of the anti-harmonic capacitor housing 1. A ball valve 8 is installed at the end of the drain port 7. When the cooling water needs to be drained, the operator unscrews the ball valve 8, which connects to the drain port 7. The cooling water inside the outer ring portion 132 leaves the outer ring portion 132 through the drain port 7 and the ball valve 8. When the cooling water needs to be replenished, the operator closes the ball valve 8, then opens the top cover 12 of the anti-harmonic capacitor housing 1, and fills the outer ring portion 132 with cooling water to complete the filling process.

[0034] In another embodiment of the present invention, the heat-conducting plate 22 is provided with a plurality of clearance holes 9 on the side near the heat-conducting sleeve 23. The plurality of clearance holes 9 are arranged at equal intervals in the vertical direction. A plurality of diversion hoses 10 are provided between the pipes at both ends of the heat dissipation channel 4. The diversion hoses 10 pass through the clearance holes 9 and are spirally sleeved on the outside of the heat-conducting sleeve 23.

[0035] Specifically, when the small water pump is working and the cooling water forms a circulating water path, some cooling water also flows through the diversion hose 10. The diversion hose 10 spirals around the outside of the heat-conducting sleeve 23. When cooling water flows through the inside of the diversion hose 10, the cooling water can directly carry away the heat of the heat-conducting sleeve 23, further improving the heat dissipation effect of the heat-conducting sleeve 23 on the capacitor core 3, so that the heat of the capacitor core 3 can be quickly eliminated and the service life of the capacitor core 3 can be extended.

[0036] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

[0038] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An intelligent harmonic suppression and interference suppression capacitor device, characterized in that, The device includes an anti-harmonic capacitor housing, an inner side of which is provided with a heat-conducting part and a plurality of vertically arranged capacitor cores. The plurality of capacitor cores are arranged at intervals along the circumference of the heat-conducting part. The heat-conducting part is in contact with the plurality of capacitor cores. A through heat dissipation channel is provided in the center of the heat-conducting part, and cooling water passes through the heat dissipation channel to remove the heat from the heat-conducting part.

2. The intelligent anti-harmonic interference capacitor device according to claim 1, characterized in that, The heat-conducting part includes a central column, and multiple heat-conducting plates are arranged on the outer side of the column. The multiple heat-conducting plates are arranged at intervals along the circumference of the column. A heat-conducting sleeve is provided at the end of the heat-conducting plate away from the column, and the heat-conducting sleeve is fitted on the outer side of the capacitor core.

3. The intelligent anti-harmonic interference capacitor device according to claim 2, characterized in that, Multiple heat dissipation fins are evenly arranged on the side wall of the heat-conducting plate.

4. The intelligent anti-harmonic interference capacitor device according to claim 1, characterized in that, The anti-harmonic capacitor housing includes a box body and a top cover, and the top cover is detachably mounted on the box body.

5. The intelligent anti-harmonic interference capacitor device according to claim 4, characterized in that, An annular partition is fixedly installed inside the housing of the anti-harmonic capacitor. The partition divides the internal space of the housing into an inner ring and an outer ring. The inner ring is used to house the capacitor core and the heat-conducting part, and the outer ring is filled with coolant.

6. The intelligent anti-harmonic interference capacitor device according to claim 5, characterized in that, Two through holes are provided on the partition plate, which connect the inner ring and the outer ring. Both through holes are connected to the two ends of the heat dissipation channel through pipes to form a circulating water path.

7. The intelligent anti-harmonic interference capacitor device according to claim 6, characterized in that, A power mechanism is also provided inside the outer ring, which provides power for the circulation of water in the circulating water path.

8. The intelligent anti-harmonic interference capacitor device according to claim 7, characterized in that, The upper and lower end faces of the anti-harmonic capacitor housing are provided with multiple heat dissipation vents for heat dissipation.

9. The intelligent anti-harmonic interference capacitor device according to claim 8, characterized in that, The anti-harmonic capacitor housing is also equipped with a drive fan, which is fixedly installed on the end face of the upper cover located inside the anti-harmonic capacitor housing.

10. The intelligent anti-harmonic interference capacitor device according to claim 9, characterized in that, The bottom outer side of the anti-harmonic capacitor housing is also provided with a drain port, and a ball valve is installed at the end of the drain port. The drain port is used to discharge the cooling water inside the outer ring.

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