A cylindrical solid-state high-voltage power capacitor

Abstract

The present invention relates to the field of high-voltage capacitors, and specifically to a cylindrical solid-state high-voltage power capacitor, including an insulating shell, wherein three groups of components are sequentially arranged inside the insulating shell. The present invention connects the components to each other through each group of connecting shafts, so that there is no need to perform insulation treatment between series segments, and the cooperation of connecting plate one and connecting plate two forms an insulation effect, and an insulating shell is adopted to solve the complex problem of shell insulation treatment, and the component itself adopts crimping technology and cylindrical one-time forming and rolling process, with low failure rate, high production efficiency, and also reduces the damage caused by welding to the component. Through this structure, it can be ensured that no hose insulating oil is required inside the capacitor, and the oil-free technology of high-voltage power capacitors is realized. Finally, under the same voltage capacity, the product volume is reduced to about 70% of the original, which reduces the product space share, reduces the product cost, and is conducive to the full automation of the production line; the product can be oil-free, which improves the safety level of the substation.

Description

Technical Field

[0001] The invention relates to the field of high-voltage capacitors, and in particular to a cylindrical solid-state high-voltage power capacitor. Background Art

[0002] High-voltage power capacitors are usually separated by an insulating medium between two conductors to form a charge storage area. The two conductors are called the plates of the capacitor, and the plates are made of metal materials such as aluminum, steel, tungsten, etc. The insulating medium can be air, gas, plastic film or ceramic, etc. When voltage is applied between the two plates of a high-voltage power capacitor, an electric field is formed in the medium. The strength of this electric field depends on the design of the capacitor and the applied voltage. During the charge storage process, the charges on the plates will move as the voltage changes, forming a positive and negative charge distribution, thereby effectively storing electrical energy.

[0003] The patent application with announcement number CN221200938U, a high-voltage power capacitor, which comprises: a high-voltage capacitor body, a cover plate is arranged at the upper end of the high-voltage capacitor body, the cover plate is provided with an insulating porcelain bottle and a guide rod, the guide rod extends to the inside of the high-voltage capacitor body and is connected to the capacitor element, a connecting plate is fixedly arranged at the upper end of the cover plate, connecting plates are arranged on both the front and rear sides of the insulating porcelain bottle, a bird-proof cover made of fluorosilicone rubber is arranged above the cover plate, a connecting block is arranged at the bottom of the bird-proof cover, the connecting block is engaged with the connecting plate, and the bird-proof cover is arranged on the outside of the insulating porcelain bottle and the guide rod. Compared with the prior art, the utility model is provided with a cover plate, an insulating porcelain bottle, a guide rod, a connecting plate, a bird-proof cover and a connecting block, the bird-proof cover can be sleeved on the outside of the insulating porcelain bottle and the guide rod, and the connecting plate is used to be inserted between the connecting blocks, so that the bird-proof cover is connected and fixed to the cover plate, which can prevent short-circuit tripping caused by overlapping of birds or other debris.

[0004] The high-voltage power capacitors in the prior art usually use flattened components. The components use different series-parallel structures to form the core according to the different voltage capacities. The core is installed in the iron shell after adding insulating cable paper. The core wire is led out through the insulating sleeve. The insulating sleeve is insulated from the gold-iron shell and injected with insulating oil after vacuum treatment. The prior art uses multiple components in parallel, and the beginning of each component is connected with the metal shell core, which needs to be insulated from the shell, and there is a possibility of shell breakdown; the product has a high withstand voltage to the shell and must be filled with insulating oil for insulation treatment, which is not conducive to the oil-free process of the product. In addition, the existing high-voltage power capacitors are usually used in groups. The existing fixing method generally uses a bracket fixing method for connection. However, although this method can avoid excessive temperature, when a group of capacitors has a fire or leakage, it will affect the remaining capacitors, and the surface of the high-voltage capacitor is exposed to the outside, which is easy to cause harm to people outside.

[0005] Therefore, it is necessary to invent a cylindrical solid-state high-voltage power capacitor to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide a cylindrical solid-state high-voltage power capacitor, which forms an insulation effect between the groups of components through the cooperation of the insulating shell and the groups of pole plates, thereby eliminating the need for injection of insulating oil and solving the problem of difficult insulation treatment. In addition, by isolating independent spaces inside the protective shell and providing multiple groups of heat dissipation grooves, the capacitors do not interfere with each other during operation, and effective protection can be formed without affecting heat dissipation, so as to solve the problems of high difficulty and cost in capacitor production and lack of effective protection in later use in the prior art.

[0007] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cylindrical solid-state high-voltage power capacitor, comprising an insulating shell, wherein three groups of components are sequentially arranged inside the insulating shell, a connecting shaft is inserted between the components of each group, a connecting plate 1 is sleeved on the connecting shaft of each group, and the connecting plate 1 is attached between the components of each group, a connecting plate 2 is attached to the surface of the topmost component away from the connecting plate 1, and a connecting plate 2 is also attached to the side of the bottommost component away from the connecting plate 1, a group of shell covers is attached to one side of the connecting plate 2 at the bottom, a wave pad is attached to one side of the connecting plate 2 at the top, another group of shell covers is attached to one side of the wave pad, and the two groups of shell covers are fixedly installed with the insulating shell, and electrodes are installed on the side of the two groups of insulating shells away from the connecting plate 2; The protection component arranged outside the insulating shell includes an insulating protection shell, an upper insulating baffle is installed in the insulating protection shell, and a lower insulating baffle is installed on a side of the insulating protection shell away from the upper insulating baffle.

[0008] As a preferred solution of the present invention, the protection component further includes mounting holes 1, and the mounting holes 1 are provided on the surface of the upper insulating baffle plate, and are arranged in three groups in sequence.

[0009] As a preferred solution of the present invention, three groups of mounting holes 2 are arranged in sequence on the surface of the lower insulating baffle, and the diameter of the mounting hole 2 is smaller than the diameter of the mounting hole 1, and heat dissipation holes are provided on the surface of the lower insulating baffle.

[0010] As a preferred solution of the present invention, two groups of insulating partitions are installed in sequence between the upper insulating baffle and the lower insulating baffle, and the two groups of insulating partitions are fixedly connected to the inner wall of the insulating protective shell, and the two groups of insulating partitions divide the space between the upper insulating baffle and the lower insulating baffle into three groups of independent spaces.

[0011] As a preferred solution of the present invention, a through groove is provided inside the insulating partition.

[0012] As a preferred solution of the present invention, a plurality of heat dissipation grooves are arranged on the inner wall of the through groove in opposite directions, and the heat dissipation grooves are arranged in a staggered multi-directional manner, and the heat dissipation grooves are respectively connected to the three independent spaces formed by the three insulating partitions.

[0013] As a preferred solution of the present invention, a plurality of groups of connecting plates are installed on the inner wall of the through groove, and the connecting plates separate the groups of heat dissipation grooves.

[0014] As a preferred solution of the present invention, a mounting ring 1 is sleeved and fixed on the surface of the insulating shell, and the diameter of the mounting ring 1 is larger than the mounting hole 1. A mounting ring 2 is sleeved and fixed on the side of the insulating shell surface away from the mounting ring 1, and the diameter of the mounting ring 2 is larger than the mounting hole 2 and smaller than the mounting hole 1.

[0015] As a preferred solution of the present invention, the insulating shell penetrates the first mounting hole and the second mounting hole, and the first mounting ring is fitted with the upper insulating baffle, and the second mounting ring is fitted with the lower insulating baffle.

[0016] In the above technical solution, compared with the prior art, the technical effects and advantages provided by the present invention are as follows: The components are connected to each other through each group of connecting shafts, so there is no need to do insulation treatment between series sections, and the cooperation of connecting plate one and connecting plate two forms an insulation effect, and an insulating shell is used to solve the complex problem of shell insulation treatment, and the component itself adopts crimping technology and a cylindrical one-time forming and rolling process, with low failure rate, high production efficiency, and reduced damage to components caused by welding. This structure can ensure that no hose insulating oil is required inside the capacitor, realizing the oil-free technology of high-voltage power capacitors. Finally, under the same voltage capacity, the product volume is reduced to about 70% of the original, reducing the product space share, reducing product costs, and facilitating the full automation of the production line; the product can be oil-free, which improves the safety level of the substation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall structure of the capacitor of the present invention; Figure 3 It is a schematic diagram of the disassembled structure of the capacitor of the present invention; Figure 4It is a schematic diagram of the planed structure of the insulating protective shell of the present invention; Figure 5 It is a schematic diagram of the overall structure of the insulating protective shell of the present invention; Figure 6 For the present invention Figure 4 The enlarged structural diagram at A in the middle; Figure 7 For the present invention Figure 5 Enlarged structural diagram at B in the middle.

[0019] Description of reference numerals: 001, insulating shell; 101, element; 102, connecting shaft; 103, connecting plate one; 104, connecting plate two; 105, shell cover; 106, wave pad; 107, electrode; 002, protective component; 201, insulating protective shell; 202, upper insulating baffle; 203, insulating partition; 204, through groove; 205, heat dissipation groove; 206, connecting plate; 207, heat dissipation hole; 208, mounting hole one; 209, mounting ring one; 210, mounting ring two; 211, lower insulating baffle; 212, mounting hole two. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] The present invention provides Figure 1-7 A cylindrical solid-state high-voltage power capacitor shown includes an insulating shell 001, three groups of components 101 are sequentially arranged inside the insulating shell 001, a connecting shaft 102 is inserted between each group of components 101, a connecting plate 103 is sleeved on each group of connecting shafts 102, and the connecting plate 103 is attached between each group of components 101, a connecting plate 2 104 is attached to the surface of the topmost component 101 away from the connecting plate 103, and a connecting plate 2 104 is also attached to the side of the bottommost component 101 away from the connecting plate 103, a group of shell covers 105 is attached to one side of the lower connecting plate 104, a wave pad 106 is attached to one side of the upper connecting plate 104, another group of shell covers 105 is attached to one side of the wave pad 106, and the two groups of shell covers 105 are fixedly installed with the insulating shell 001, and electrodes 107 are installed on the sides of the two groups of insulating shells 001 away from the connecting plate 2 104; The three groups of components 101 are connected by a connecting shaft 102, and an axial series structure is adopted. There is no need to perform insulation treatment between series segments, and the insulating shell 001 solves the complex problem of handling the insulating shell 001, and the crimping technology is adopted to reduce the damage to the component 101 caused by welding. The component 101 adopts a cylindrical one-time forming and rolling process, and the component 101 has a low failure rate and high production efficiency.

[0022] The protection component 002 arranged outside the insulating shell 001 includes an insulating protective shell 201, an upper insulating baffle 202 is installed in the insulating protective shell 201, and a lower insulating baffle 211 is installed on a side of the insulating protective shell 201 away from the upper insulating baffle 202.

[0023] The interior of the insulating protection shell 201 can be sealed by the upper insulating baffle 202 and the lower insulating baffle 211 .

[0024] Furthermore, in the above structure, the protection component 002 also includes a mounting hole 208, and the mounting hole 208 is opened on the surface of the upper insulating baffle 202, and three groups of the mounting holes are arranged in sequence.

[0025] Furthermore, in the above structure, three groups of second mounting holes 212 are arranged in sequence on the surface of the lower insulating baffle 211 , and the diameter of the second mounting hole 212 is smaller than the diameter of the first mounting hole 208 . A heat dissipation hole 207 is provided on the surface of the lower insulating baffle 211 .

[0026] The inside of the insulating protective shell 201 can be connected to the outside through the first mounting hole 208 and the second mounting hole 212.

[0027] Furthermore, in the above structure, two groups of insulating partitions 203 are installed in sequence between the upper insulating baffle 202 and the lower insulating baffle 211, and the two groups of insulating partitions 203 are fixedly connected to the inner wall of the insulating protective shell 201, and the two groups of insulating partitions 203 divide the space between the upper insulating baffle 202 and the lower insulating baffle 211 into three groups of independent spaces.

[0028] The two groups of insulating partitions 203 can make the three groups of spaces independent, and the capacitors in each group do not interfere with each other, thereby avoiding mutual influence.

[0029] Furthermore, in the above structure, a through groove 204 is provided inside the insulating partition 203 .

[0030] The through slot 204 allows the interior of the insulating partition 203 to communicate with the outside.

[0031] Furthermore, in the above structure, a plurality of heat dissipation grooves 205 are oppositely distributed on the inner wall of the through groove 204 , and each group of heat dissipation grooves 205 are staggered and arranged in multiple directions, and the heat dissipation grooves 205 are respectively connected to the three independent spaces formed by the three groups of insulating partitions 203 .

[0032] The heat in the three groups of independent spaces can be transported to the through slots 204 through the heat dissipation slots 205, thereby achieving a heat dissipation effect.

[0033] Furthermore, in the above structure, a plurality of connecting plates 206 are installed on the inner wall of the through slot 204 , and the connecting plates 206 separate the heat dissipation slots 205 of each group.

[0034] The connecting plate 206 is used to avoid interference between the heat dissipation slots 205 .

[0035] Furthermore, in the above structure, a mounting ring 209 is sleeved and fixed on the surface of the insulating shell 001, and the diameter of the mounting ring 209 is larger than the mounting hole 208. A mounting ring 210 is sleeved and fixed on the side of the surface of the insulating shell 001 away from the mounting ring 209, and the diameter of the mounting ring 210 is larger than the mounting hole 212 and smaller than the mounting hole 208.

[0036] By making the mounting ring 209 larger than the diameter of the mounting hole 208, the mounting ring 209 can be fitted with the upper insulating baffle 202, and the mounting ring 210 can pass through the mounting hole 208 and fit onto the lower insulating baffle 211, so that the insulating shell 001 is penetrated and fixed in the insulating protective shell 201 to achieve the installation of the capacitor.

[0037] Furthermore, in the above structure, the insulating housing 001 penetrates the mounting hole 1 208 and the mounting hole 212 , and the mounting ring 1 209 fits with the upper insulating baffle 202 , and the mounting ring 210 fits with the lower insulating baffle 211 .

[0038] In this way, the three sets of insulating shells 001 are respectively installed in the corresponding spaces inside the insulating protective shell 201.

[0039] like Figure 1-7 As shown, each group of connecting shafts 102 and connecting plate 1 103 are installed between each group of components 101, and connected with connecting plate 2 104, so that an insulation effect is formed between each group of components 101, so that there is no need to perform insulation treatment between series segments, and an insulating shell 001 is used to solve the complex problem of shell insulation treatment, and the component 101 adopts a cylindrical one-time forming and rolling process and the component 101 itself adopts a crimping technology, so that the failure rate of the component 101 is low, the production efficiency is high, and the damage to the component 101 caused by welding can be reduced. Through this structure, it can be ensured that no hose insulating oil is required inside the capacitor, and the oil-free technology of the high-voltage power capacitor is realized. The invention relates to a method for manufacturing a capacitor of the present invention. In the installation process, it is only necessary to slide the mounting ring 210 of the insulating housing 001 downward along the mounting hole 1 208 and the mounting hole 212, so that the mounting ring 210 is fitted to the surface of the lower insulating baffle 211, and the mounting ring 1 209 is fitted to the upper insulating baffle 202. In this way, the remaining capacitors are assembled. During operation, the heat inside the capacitors will flow into the through groove 204 along the heat dissipation groove 205 and be discharged, and the heat dissipation hole 207 can assist in heat dissipation. Through the structure inside the insulating protective housing 201, it can be ensured that each group of capacitors does not interfere with each other during operation, and the capacitors are effectively protected without affecting the heat dissipation effect.

[0040] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that 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 above 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. A cylindrical solid-state high-voltage power capacitor, comprising an insulating housing (001), characterized in that: Three groups of components (101) are sequentially arranged inside the insulating shell (001), a connecting shaft (102) is inserted between the components (101) of each group, a connecting plate 1 (103) is sleeved on the connecting shaft (102) of each group, and the connecting plate 1 (103) is fitted between the components (101) of each group, a connecting plate 2 (104) is fitted on a surface of a side of the topmost component (101) away from the connecting plate 1 (103), and a connecting plate 2 (104) is fitted on a surface of a side of the bottommost component (101) away from the connecting plate 1 (103). 03) is also attached to one side of the second connecting plate (104), a group of shell covers (105) are attached to one side of the second connecting plate (104) at the bottom, a wave pad (106) is attached to one side of the second connecting plate (104) at the top, another group of shell covers (105) is attached to one side of the wave pad (106), and the two groups of shell covers (105) are fixedly installed on the insulating shell (001), and the two groups of insulating shells (001) are installed with electrodes (107) on one side away from the second connecting plate (104); The protection component (002) arranged outside the insulating shell (001) comprises an insulating protection shell (201), an upper insulating baffle (202) is installed in the insulating protection shell (201), and a lower insulating baffle (211) is installed on a side of the insulating protection shell (201) away from the upper insulating baffle (202).

2. A cylindrical solid-state high-voltage power capacitor according to claim 1, characterized in that: The protection component (002) further comprises mounting holes (208), wherein the mounting holes (208) are provided on the surface of the upper insulating baffle (202) and are arranged in sequence in three groups.

3. A cylindrical solid-state high-voltage power capacitor according to claim 1, characterized in that: The surface of the lower insulating baffle (211) is provided with three groups of second mounting holes (212) arranged in sequence, and the diameter of the second mounting hole (212) is smaller than the diameter of the first mounting hole (208). The surface of the lower insulating baffle (211) is provided with heat dissipation holes (207).

4. A cylindrical solid-state high-voltage power capacitor according to claim 1, characterized in that: Two groups of insulating partitions (203) are sequentially installed between the upper insulating baffle (202) and the lower insulating baffle (211), and the two groups of insulating partitions (203) are fixedly connected to the inner wall of the insulating protective shell (201), and the two groups of insulating partitions (203) divide the space between the upper insulating baffle (202) and the lower insulating baffle (211) into three groups of independent spaces.

5. A cylindrical solid-state high-voltage power capacitor according to claim 4, characterized in that: A through groove (204) is provided inside the insulating partition (203).

6. A cylindrical solid-state high-voltage power capacitor according to claim 5, characterized in that: The inner wall of the through groove (204) is provided with a plurality of groups of heat dissipation grooves (205) distributed in opposite directions, and the groups of heat dissipation grooves (205) are arranged in a staggered multi-directional manner, and the heat dissipation grooves (205) are respectively connected to the interior of three groups of independent spaces formed by three groups of insulating partitions (203).

7. A cylindrical solid-state high-voltage power capacitor according to claim 6, characterized in that: A plurality of groups of connecting plates (206) are installed on the inner wall of the through groove (204), and the connecting plates (206) separate the groups of heat dissipation grooves (205).

8. A cylindrical solid-state high-voltage power capacitor according to claim 1, characterized in that: A mounting ring 1 (209) is sleeved and fixed on the surface of the insulating shell (001), and the diameter of the mounting ring 1 (209) is larger than the diameter of the mounting hole 1 (208); a mounting ring 2 (210) is sleeved and fixed on the side of the surface of the insulating shell (001) away from the mounting ring 1 (209), and the diameter of the mounting ring 2 (210) is larger than the diameter of the mounting hole 2 (212) and smaller than the diameter of the mounting hole 1 (208).

9. A cylindrical solid-state high-voltage power capacitor according to claim 8, characterized in that: The insulating housing (001) penetrates the first mounting hole (208) and the second mounting hole (212), the first mounting ring (209) fits the upper insulating baffle (202), and the second mounting ring (210) fits the lower insulating baffle (211).

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