High-voltage capacitor for power substation

Abstract

The invention discloses a high-voltage capacitor for a power substation, which comprises a capacitor, hollow shells are fixed at the left end and the right end of the capacitor, a liquid tank is fixed between the two shells, and the liquid tank is communicated with the side walls of the shells; a plurality of heat dissipation pipes penetrating through the front end and the rear end of the capacitor are installed in the capacitor, and the heat dissipation pipes are communicated with the liquid groove. Liquid pipes are fixed between the two shells, and a heat dissipation shell and a heat dissipation plate are rotationally connected between the adjacent liquid pipes; the heat dissipation shell is of a blade-shaped hollow structure and comprises a main stem, branch veins and a blade handle, the blade handle is communicated with the liquid pipe through a liquid inlet hole, and a liquid outlet hole is formed in the end, away from the blade handle, of the main stem; the heat dissipation plate is hollow, the heat dissipation plate is communicated with the liquid groove through the heat dissipation pipe, the heat dissipation plate is provided with a second heat dissipation hole, and the second heat dissipation hole is communicated with the first heat dissipation hole of the heat dissipation shell; the device solves the problem of low heat dissipation efficiency at present.

Description

Technical Field

[0001] The present invention belongs to the technical field of electrical engineering equipment, and in particular relates to a high-voltage capacitor for a power substation. Background Art

[0002] High-voltage capacitors, as key components, play a crucial role in ensuring the stable operation of power systems. Their operating principle is based on the storage of energy in an electric field. In an AC circuit, capacitors continuously charge and discharge. However, this characteristic means that current continuously flows within the capacitor during operation.

[0003] In high-voltage capacitors, due to their internal structure and material properties, current inevitably generates heat when it passes through them. As the capacitor continues to operate, this heat accumulates, causing the internal temperature of the capacitor to gradually rise.

[0004] Rising internal temperatures in capacitors can lead to a range of serious problems. From a performance perspective, excessively high temperatures can affect the electrical properties of capacitors. For example, capacitance values ​​may fluctuate, preventing them from storing and discharging energy precisely as designed, impacting the stability and power quality of the power system. Regarding reliability, prolonged high-temperature environments can accelerate the aging of the capacitor's internal insulation material, reducing its insulation performance, increasing the risk of breakdown and other failures, and shortening its service life. More seriously, if a capacitor fails due to overheating, it can cause safety incidents such as fires and explosions, posing a significant threat to the safety of equipment and personnel in power substations.

[0005] Currently, existing high-voltage capacitors used in power substations have significant shortcomings in their heat dissipation design. Conventional heat dissipation methods, such as natural air cooling or simple heat sinks, often struggle to quickly and effectively dissipate the large amounts of heat generated by the capacitors during operation.

[0006] Therefore, a high-voltage capacitor for a power substation is proposed to solve the current problem of low heat dissipation efficiency. Summary of the Invention

[0007] The purpose of the present invention is to provide a high-voltage capacitor for a power substation to solve the problems raised in the above background technology.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: a high-voltage capacitor for a power substation, comprising a capacitor, wherein hollow shells are fixed at the left and right ends of the capacitor, a liquid tank is fixed between the two shells, and the liquid tank is connected to the side wall of the shell; The capacitor is internally provided with a plurality of heat dissipation pipes penetrating the front and rear ends thereof, and the heat dissipation pipes are connected to the liquid tank; A liquid pipe is fixed between the two shells, and a heat dissipation shell and a heat dissipation plate are rotatably connected between adjacent liquid pipes; The heat dissipation shell is a leaf-shaped hollow structure, comprising a main stem, branch veins and a petiole, the petiole being connected to the liquid pipe via a liquid inlet hole, and a liquid outlet hole being provided at one end of the main stem away from the petiole; The heat dissipation plate is hollow and connected to the liquid tank through a heat dissipation pipe. A second heat dissipation hole is provided on the heat dissipation plate, and the second heat dissipation hole is connected to the first heat dissipation hole of the heat dissipation housing. The connecting rod 1 and the connecting rod 2 are respectively fixed to the bottom of the front and rear heat dissipation housings, and a hollow connecting structure is formed by rotating the rod 1 and the rotating rod 2; The push rod 1 and the push rod 2 are respectively connected to the liquid tank and the heat dissipation shell.

[0009] The present invention further states that the petiole of the heat dissipation housing is rotatably connected to the liquid pipe via a rotating ring.

[0010] The present invention further states that a plurality of branch veins extend from both sides of the main stem, and the branch veins are connected to the interior of the main stem.

[0011] The present invention further states that the second heat dissipation hole of the heat dissipation plate is coaxially aligned with the heat dissipation hole of the rear heat dissipation housing to form a coolant diversion channel.

[0012] The present invention further describes that the telescopic movement of the push rod 1 and the push rod 2 changes the angle between the heat dissipation housing and the liquid tank through the hinge mechanism, and the angle range is 30°-150°.

[0013] The present invention further describes that the hollow cavities of the connecting rod 1 and the connecting rod 2 form a closed coolant circuit with the rotating rod 1 and the rotating rod 2, and the coolant flows through the rear heat dissipation shell, the connecting rod 2, the rotating rod 1, the rotating rod 2, the connecting rod 1 and the front heat dissipation shell in sequence.

[0014] The present invention further describes that the inner electrode layers of the capacitor are cross-stacked.

[0015] The present invention further illustrates that the shell is connected to an external liquid tank, and the coolant in the liquid tank is circulated through a liquid pipe and injected into the heat dissipation shell and the heat dissipation plate.

[0016] The present invention further states that the heat dissipation pipe penetrates the electrode and the dielectric layer of the capacitor.

[0017] The present invention further describes that electrodes are provided at the left and right ends of the capacitor.

[0018] Compared with the prior art, the present invention has the following beneficial effects: By injecting coolant into the hollow shell, the coolant enters the heat dissipation pipe through the liquid tank to dissipate heat inside the capacitor. The coolant then flows into the heat dissipation plate with the heat, and then enters the main stem and branch veins of the heat dissipation shell through the heat dissipation holes, thereby increasing the heat dissipation area. Finally, the coolant circulates through the connecting rod, rotating rod and other structures, greatly improving the heat dissipation efficiency of the capacitor, ensuring that the capacitor can maintain a suitable operating temperature during normal operation or when excessive heat is generated due to increased current, thus ensuring its normal operation. The heat sink housing is designed as a "leaf-shaped" hollow structure, consisting of a main stem, branch veins, and petiole. This structure not only increases the contact area between the coolant and the heat sink, improving the heat dissipation effect, but also the petiole is connected to the liquid pipe through a rotating ring, allowing the heat sink to rotate flexibly. At the same time, push rods 1 and 2 can change the angle between the heat sink and the liquid tank, further adjusting the density of the heat sink, and flexibly optimizing the heat dissipation effect according to the actual heat dissipation requirements of the capacitor.

[0019] After dissipating heat, the coolant in the heat dissipation housing enters the liquid pipe through the liquid inlet hole and then returns to the housing for recycling. This circulation design not only improves the utilization rate of the coolant and reduces the cost of use, but also ensures the continuity and stability of the heat dissipation process, allowing the capacitor to maintain a good heat dissipation state for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 1 is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 1 is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 3 2 is a schematic structural diagram of a heat dissipation housing according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the internal structure of a heat dissipation housing according to an embodiment of the present invention; Figure 5 This is an embodiment of the present invention Figure 2 A magnified schematic diagram of area A; Figure 6 This is a schematic diagram of the connection of the heat dissipation housing according to an embodiment of the present invention; Figure 7 This is an embodiment of the present invention Figure 6 A magnified schematic diagram of area B; Figure 8 It is a side view schematic diagram of the overall structure of an embodiment of the present invention; Figure 9 is a schematic diagram of a capacitor cooling process according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the overall internal structure of an embodiment of the present invention; In the figure: 1, capacitor; 101, housing; 102, liquid tank; 103, heat pipe; 104, liquid pipe; 2. Heat dissipation shell; 201. Main stem; 2011. Liquid outlet; 2012. Heat dissipation hole 1; 202. Branch vein; 203. Petiole; 2031. Liquid inlet; 204. Rotating ring; 3. Heat dissipation plate; 301. Heat dissipation hole 2; 4. Connecting rod 1; 401. Rotating rod 2; 5. Connecting rod 2; 501. Rotating rod 1; 6. Push rod 1; 7. Push rod 2. DETAILED DESCRIPTION

[0021] The following is a non-limiting detailed description of the technical solutions of the present invention in conjunction with preferred embodiments and the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0022] See also Figure 1-10 , an embodiment of the present invention provides a technical solution: a high-voltage capacitor for a power substation, comprising a capacitor 1; like Figure 1 and Figure 2 As shown, in some embodiments, a shell 101 is fixed to the left and right ends of the capacitor 1, and the shell 101 is hollow. Two liquid tanks 102 are fixed between the two shells 101, and the liquid tank 102 is communicated with the side wall of the shell 101. The two liquid tanks 102 are respectively fixed to the front and rear ends of the capacitor 1; a plurality of heat dissipation pipes 103 are installed in the capacitor 1, and the heat dissipation pipes 103 pass through the front and rear ends of the capacitor 1 for dissipating heat for the capacitor 1.

[0023] It should be additionally explained that the heat dissipation pipe 103 passes through the capacitor 1 and the medium of the capacitor 1 .

[0024] When the capacitor 1 is in operation, the internal current causes the temperature to rise, affecting the normal operation of the capacitor 1. By injecting cooling liquid into the housing 101, the cooling liquid in the housing 101 enters the liquid tank 102 located on either side of the capacitor 1 and dissipates heat for the interior of the capacitor 1 through the heat dissipation pipe 103.

[0025] like Figure 2As shown, in some embodiments, a plurality of liquid pipes 104 are fixed between the two housings 101, the liquid pipes 104 are communicated with the side walls of the housing 101, a heat dissipation housing 2 and a heat dissipation plate 3 are rotatably connected between two adjacent liquid pipes 104, and the two adjacent heat dissipation housings 2 are staggered front and back. like Figure 5 As shown, in some embodiments, a connecting rod 1 4 is fixed to the bottom of the front heat dissipation housing 2, and a connecting rod 2 5 is fixed to the bottom of the rear heat dissipation housing 2; a rotating rod 1 501 is rotatably connected to the outer diameter of the connecting rod 2 5, and the other end of the rotating rod 1 501 is rotatably connected to the rotating rod 2 401, and the rotating rod 2 401 is rotatably connected to the outer diameter of the connecting rod 1 4; the connecting rod 1 4, the rotating rod 2 401, the connecting rod 2 5 and the rotating rod 1 501 are hollow inside and communicate with each other.

[0026] like Figure 6 、 Figure 7 and Figure 10 As shown, in some embodiments, the heat sink 3 is hollow, and the heat sink 3 is connected to the liquid tank 102 on the opposite side through the heat dissipation pipe 103. A second heat dissipation hole 301 is opened on the heat sink 3, and the second heat dissipation hole 301 is in contact with and connected to the heat dissipation shell 2 described later.

[0027] like Figure 3 、 Figure 4 and Figure 6 As shown, in some embodiments, the heat dissipation housing 2 is "leaf-shaped" and hollow inside, and includes a main stem 201, a branch vein 202, and a petiole 203. The petiole 203 is provided with a liquid inlet hole 2031. The main stem 201, the branch vein 202, and the petiole 203 are connected to each other; the petiole 203 is connected to the liquid pipe 104 through the liquid inlet hole 2031. A rotating ring 204 is fixed on the petiole 203, and the rotating ring 204 is rotatably connected to the liquid tube 104. The main stem 201 is fixed below the petiole 203, and a plurality of branch veins 202 extend from both sides of the main stem 201. A liquid outlet 2011 is provided at one end of the main stem 201 away from the petiole 203, and the liquid outlet 2011 is used to discharge liquid.

[0028] It should be supplemented that: a heat dissipation hole 1 2012 is opened in the middle of the main stem 201 of the heat dissipation housing 2 , and the heat dissipation hole 1 2012 is communicated with the heat dissipation hole 2 301 .

[0029] The coolant in the heat pipe 103 cools the interior of the capacitor 1 and then flows into the heat sink 3 on the other side of the capacitor 1 with the heat in the capacitor 1. The coolant in the heat sink 3 enters the main stem 201 of the rear heat dissipation shell 2 through the heat dissipation hole 201, and the coolant inside the main stem 201 enters the branch vein 202, thereby increasing the heat dissipation area of ​​the coolant inside the heat dissipation shell 2. The coolant in the heat dissipation shell 2 enters the interior of the connecting rod 2 5 through the liquid outlet 2011, and the coolant inside the connecting rod 2 5 enters the interior of the connecting rod 1 4 through the rotating rod 1 501 and the rotating rod 2 401. The coolant in the connecting rod 1 4 enters the main stem 201 of the front heat dissipation shell 2 through the liquid outlet 2011, and the coolant inside the main stem 201 enters the branch vein 202. The heat dissipation of the front and rear heat dissipation shells 2 greatly increases the heat dissipation efficiency.

[0030] The coolant in the heat dissipation housing 2 enters the interior of the liquid pipe 104 through the liquid inlet hole 2031 after heat dissipation, and the coolant in the liquid pipe 104 enters the housing 101 again and circulates.

[0031] like Figure 8 As shown, in some embodiments, it is necessary to further explain that: a push rod 6 is fixed between the liquid tank 102 and the heat dissipation housing 2; A push rod 2 7 is fixed between the liquid tank 102 and the aforementioned heat dissipation housing 2. The telescopic movement of the push rod 1 6 and the push rod 2 7 changes the angle between the heat dissipation housing 2 and the liquid tank 102 through the hinge mechanism, and the angle range is 30°-150°.

[0032] It should be supplemented that: a liquid tank is connected to the housing 101 , and the liquid tank is used to transport coolant into the heat dissipation housing 2 .

[0033] It should be supplemented that the inner electrode layers of the capacitor 1 are cross-stacked, and the number of stacked layers is determined according to the capacitance value and electrical performance.

[0034] It should be supplemented that electrodes are provided at the left and right ends of the capacitor 1 .

[0035] Embodiment 1: In this embodiment, the heat dissipation of the capacitor is realized, and the capacitor is cooled by circulating the coolant to achieve efficient cooling.

[0036] When the capacitor 1 is in operation, the internal current causes the temperature to rise, affecting the normal operation of the capacitor 1. By injecting the coolant in the liquid tank into the shell 101, the coolant in the shell 101 enters the liquid tank 102 located on either side of the capacitor 1 and dissipates heat for the interior of the capacitor 1 through the heat dissipation pipe 103.

[0037] The coolant in the heat pipe 103 cools the interior of the capacitor 1 and then flows into the heat sink 3 on the other side of the capacitor 1 with the heat in the capacitor 1. The coolant in the heat sink 3 enters the main stem 201 of the rear heat dissipation shell 2 through the heat dissipation hole 201, and the coolant inside the main stem 201 enters the branch vein 202, thereby increasing the heat dissipation area of ​​the coolant inside the heat dissipation shell 2. The coolant in the heat dissipation shell 2 enters the interior of the connecting rod 2 5 through the liquid outlet 2011, and the coolant inside the connecting rod 2 5 enters the interior of the connecting rod 1 4 through the rotating rod 1 501 and the rotating rod 2 401. The coolant in the connecting rod 1 4 enters the main stem 201 of the front heat dissipation shell 2 through the liquid outlet 2011, and the coolant inside the main stem 201 enters the branch vein 202. The heat dissipation of the front and rear heat dissipation shells 2 greatly increases the heat dissipation efficiency.

[0038] The coolant in the heat dissipation housing 2 enters the interior of the liquid pipe 104 through the liquid inlet hole 2031 after heat dissipation, and the coolant in the liquid pipe 104 enters the housing 101 again and circulates.

[0039] When the current in the capacitor 1 increases and the heat generated in the capacitor 1 is excessive and the heat dissipation efficiency needs to be increased, the push rod 1 6 is activated to increase the angle between the rear heat dissipation shell 2 and the liquid tank 102, and the push rod 2 7 is activated to increase the angle between the front heat dissipation shell 2 and the rear heat dissipation shell 2, thereby reducing the density between the heat dissipation shells 2 and increasing the heat dissipation efficiency of the capacitor 1.

[0040] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only used to facilitate the description of the present invention, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0041] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the aforementioned embodiments, or that some of the technical features may be replaced with equivalents. Such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A high-voltage capacitor for a power substation, comprising a capacitor (1), characterized in that: A hollow shell (101) is fixed at the left and right ends of the capacitor (1), a liquid tank (102) is fixed between the two shells (101), and the liquid tank (102) is in communication with the side wall of the shell (101); The capacitor (1) is internally provided with a plurality of heat dissipation pipes (103) penetrating the front and rear ends thereof, and the heat dissipation pipes (103) are in communication with the liquid tank (102); A liquid pipe (104) is fixed between the two shells (101), and a heat dissipation shell (2) and a heat dissipation plate (3) are rotatably connected between adjacent liquid pipes (104); The heat dissipation housing (2) is a leaf-shaped hollow structure, comprising a main stem (201), a branch vein (202), and a petiole (203); the petiole (203) is connected to the liquid pipe (104) via a liquid inlet hole (2031); and a liquid outlet hole (2011) is provided at one end of the main stem (201) away from the petiole (203); The heat dissipation plate (3) is hollow, and the heat dissipation plate (3) is connected to the liquid tank (102) through the heat dissipation pipe (103). The heat dissipation hole 2 (301) is provided on the heat dissipation plate (3), and the heat dissipation hole 2 (301) is connected to the heat dissipation hole 1 (2012) of the heat dissipation housing (2); The connecting rod 1 (4) and the connecting rod 2 (5) are respectively fixed to the bottom of the front and rear heat dissipation housings (2), and a hollow connecting structure is formed by rotating rod 1 (501) and rotating rod 2 (401); The push rod 1 (6) and the push rod 2 (7) are respectively connected to the liquid tank (102) and the heat dissipation housing (2).

2. The high-voltage capacitor for a power substation according to claim 1, characterized in that: The petiole (203) of the heat dissipation housing (2) is rotatably connected to the liquid pipe (104) via a rotating ring (204).

3. The high-voltage capacitor for a power substation according to claim 2, characterized in that: A plurality of branch veins (202) extend from both sides of the main stem (201), and the branch veins (202) are communicated with the interior of the main stem (201).

4. The high-voltage capacitor for a power substation according to claim 3, characterized in that: The second heat dissipation hole (301) of the heat dissipation plate (3) is coaxially aligned with the first heat dissipation hole (2012) of the rear heat dissipation housing (2), forming a cooling liquid diversion channel.

5. The high-voltage capacitor for a power substation according to claim 4, characterized in that: The telescopic movement of the push rod 1 (6) and the push rod 2 (7) changes the angle between the heat dissipation housing (2) and the liquid tank (102) through the hinge mechanism, and the angle range is 30°-150°.

6. The high-voltage capacitor for a power substation according to claim 5, characterized in that: The hollow cavities of the connecting rod 1 (4) and the connecting rod 2 (5) form a closed cooling liquid circuit with the rotating rod 1 (501) and the rotating rod 2 (401), and the cooling liquid flows through the rear heat dissipation housing (2), the connecting rod 2 (5), the rotating rod 1 (501), the rotating rod 2 (401), the connecting rod 1 (4) and the front heat dissipation housing (2) in sequence.

7. The high-voltage capacitor for a power substation according to claim 6, characterized in that: The inner electrode layers of the capacitor (1) are cross-stacked.

8. The high-voltage capacitor for a power substation according to claim 7, characterized in that: The housing (101) is connected to an external liquid tank, and the coolant in the liquid tank is circulated through the liquid pipe (104) and injected into the heat dissipation housing (2) and the heat dissipation plate (3).

9. The high-voltage capacitor for a power substation according to claim 8, characterized in that: The heat dissipation pipe (103) penetrates the electrode and dielectric layer of the capacitor (1).

10. The high-voltage capacitor for a power substation according to claim 9, characterized in that: Electrodes are provided at the left and right ends of the capacitor (1).

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