Insulation and noise reduction structure of extra-high voltage oil-immersed shunt reactor

Abstract

The utility model discloses an insulation noise reduction structure of an extra-high voltage oil-immersed shunt reactor, which comprises a plurality of layers of insulation partition plates, a cork rubber pad, a non-adhesive laminated wood fastener, a hot-pressed polyester resin plastic laminated board fastener and a lastrum laminated wood bracket, and the two adjacent layers of insulation partition plates are separated by the cork rubber pad. And the insulating partition plate is fixed on the box wall of the extra-high-voltage oil-immersed shunt reactor through the cork rubber pad, the non-adhesive laminated wood fastener, the hot-pressed polyester resin plastic laminated board fastener and the Lushi laminated wood bracket. The insulation noise reduction structure has enough mechanical strength and certain flexibility, integrates the advantages of reliable mechanical structure, reliable insulation, noise absorption and the like, and solves the problems of high ground potential field intensity and low noise attenuation in a high-voltage line end outgoing line area. The low-noise electric reactor has the advantages of being capable of improving the ground insulation strength of the high-voltage line end and absorbing and attenuating noise, and is suitable for the design of low-noise electric reactors with the grade of 750 kV to 1100 kV.

Description

Technical Field

[0001] This utility model belongs to the field of inductor technology, specifically relating to an insulation and noise reduction structure for an ultra-high voltage oil-immersed parallel reactor. Background Technology

[0002] Shunt reactors are large-capacity inductor coils connected to high-voltage power grid lines, primarily used for reactive power regulation to address issues of excess capacitive reactive power and capacity expansion in the power grid, thereby improving power system stability. Oil-immersed shunt reactors are mainly used in 220kV, 500kV, and even 750kV and 1000kV high-voltage, ultra-high-voltage, and extra-high-voltage systems both domestically and internationally.

[0003] With the rapid development of my country's ultra-high voltage (UHV) power system, the demand for UHV shunt reactors has increased rapidly. Once put into operation, UHV shunt reactors operate at full load or even overload. Because UHV shunt reactors typically have an iron core, and the core column is composed of alternating stacked core discs and air gaps, under excitation conditions, the magnetostriction of the silicon steel sheets and the electromagnetic force between the core discs ultimately result in large vibrations and high noise levels in the iron core reactor. In this case, the insulation level of the high-voltage line-outgoing device is as high as 1100kV, and the corresponding high electric field strength in the tank wall ground potential area is a particularly prominent issue.

[0004] As people's demands for quality of life increase, they are placing more stringent requirements on noise pollution. The State Grid Corporation of China requires that the noise level of 1100kV UHV parallel reactors be controlled at 64dB(A) or below, which is the most demanding technical specification for reactor design. To achieve this low-noise requirement, the industry often adopts measures such as reducing the magnetic flux density of the core column, increasing the clamping and compression forces, filling the tank walls with sand, and adding shock-absorbing rubber pads between the reactor body and the tank bottom. However, the noise reduction effect of these measures is not particularly ideal, and there is still considerable room for improvement.

[0005] Chinese invention patent CN119480389A discloses a low-noise ultra-high voltage parallel reactor, including an oil tank, a riser base, and a cooling system. A composite noise reduction structure is installed on the inner side of the oil tank wall, and an outer noise reduction mechanism is installed on the outer side of the oil tank wall. A positioning damping structure is installed at the lower part of the reactor body. An iron core is installed in the oil tank. Pull screws four are installed on the left and right sides of the outer periphery of the yoke, and pull screws five are installed on the upper and lower sides of the outer periphery of the yoke. Pull screws seven are installed at the two upper corners of the inner periphery of the yoke near the oblique joint of the yoke. Vibration damping pads one are installed between pull screws four, five, and seven and the yoke. Insulating pads and vibration damping pads two are installed between the upper crossbeam, upper pressure beam, and lower pad foot and the yoke. An L-shaped insulating rubber sheet is installed on the outer side of the yoke near the oblique joint of the yoke; an insulating partition is installed between the insulating rubber sheet and the yoke. However, the insulation and noise reduction effects of the aforementioned patents are generally poor. They cannot reduce noise on the output side and the cooler side, nor can they solve the problem of electric field distribution, thus posing potential quality risks.

[0006] Chinese utility model patent CN220101909U discloses a reactor with good vibration damping effect, including an oil tank and a reactor body installed inside the oil tank. The reactor body includes a frame, and an iron core assembly is installed inside the frame. The frame includes a bottom mounting bracket and a top mounting bracket that is matched and fixed on the bottom mounting bracket. The oil tank includes a tank body and a tank cover that is matched and fixed on the tank body. However, the noise reduction baffle of the tank wall in the above patent is directly fixed to the tank wall with bolts, without the use of special materials for vibration damping. Creepage is prone to occur along the bolts at high field strength areas at the bushing outlet. Utility Model Content

[0007] To address the technical problems existing in the prior art, the purpose of this utility model is to provide an insulation and noise reduction structure for an ultra-high voltage oil-immersed parallel reactor.

[0008] To achieve the above objectives and technical effects, the technical solution adopted by this utility model is as follows:

[0009] An insulation and noise reduction structure for an ultra-high voltage oil-immersed parallel reactor includes an insulating partition, a cork rubber pad, glue-free laminated wood fasteners, hot-pressed polyester resin plastic laminated board fasteners, and a Lausling laminated wood bracket. The insulating partition has several layers, and adjacent layers of insulating partitions are separated by cork rubber pads. The insulating partition is fixed to the wall of the ultra-high voltage oil-immersed parallel reactor tank by the cork rubber pad, glue-free laminated wood fasteners, hot-pressed polyester resin plastic laminated board fasteners, and Lausling laminated wood bracket.

[0010] Furthermore, the insulating partition has several holes with a diameter of 3mm, and the distance between two adjacent holes is 30mm.

[0011] Furthermore, the insulating partition has four layers, arranged sequentially along the direction away from the wall of the UHV oil-immersed parallel reactor box: the first insulating partition, the second insulating partition, the third insulating partition, and the fourth insulating partition, with each insulating partition having a thickness of 2mm.

[0012] Furthermore, the first layer of insulating partition is fixed to the wall of the UHV oil-immersed parallel reactor tank using cork rubber pads and hot-pressed polyester resin plastic laminate fasteners. The second layer of insulating partition is fixed to the outside of the first layer of insulating partition and uses glue-free laminated wood fasteners to extend the second layer of insulating partition from the screw head between the first and second layers of insulating partition to the opposite side of the tank wall. The third layer of insulating partition is fixed to the outside of the second layer of insulating partition and uses glue-free laminated wood fasteners to extend the third layer of insulating partition from the screw head between the second and third layers of insulating partition to the opposite side of the tank wall. The fourth layer of insulating partition is fixed to the outside of the third layer of insulating partition.

[0013] Furthermore, the location of the glue-free laminated wood fastener, which protrudes from the screw head between the first and second insulating partitions and extends to the opposite side of the box wall through the second insulating partition, is at least 300mm away from the hot-pressed polyester resin plastic laminate fastener.

[0014] Furthermore, the glue-free laminated wood fasteners are staggered and fixed with a spacing controlled between 500 and 700 mm.

[0015] Furthermore, the thickness of the cork rubber pad is 8mm.

[0016] Furthermore, a Lausling laminated wood bracket is provided at the lower part of the insulating partition, and the Lausling laminated wood bracket is fixed to the wall of the UHV oil-immersed parallel reactor box.

[0017] Furthermore, the contact area between the Lausling laminated wood bracket and the wall of the UHV oil-immersed parallel reactor is uniformly coated with UHV PVB adhesive.

[0018] Furthermore, the insulating partition is fixed to the wall of the UHV oil-immersed parallel reactor box using hot-pressed polyester resin plastic laminate fasteners.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] This utility model discloses an insulation and noise reduction structure for an ultra-high voltage oil-immersed parallel reactor. It has both sufficient mechanical strength and a certain degree of flexibility, integrating the advantages of reliable mechanical structure, reliable insulation, and noise impediment and absorption. It effectively solves the problems of high ground potential field strength and low noise attenuation in the high-voltage line outlet area. It has the advantages of reasonable structure, easy operation, safe and stable operation, and the ability to improve the insulation strength of the high-voltage line to ground and absorb and attenuate noise. It is suitable for the design of low-noise reactors with voltage levels of 750kV to 1100kV. Attached Figure Description

[0021] Figure 1 This is an installation diagram of the present invention;

[0022] Figure 2 For the present utility model Figure 1 Sectional views of AA, BB, CC, and DD in the diagram;

[0023] Figure 3 This is a side view of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the insulating partition of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the cork rubber pad of this utility model;

[0026] Figure 6 This is a schematic diagram of the structure of the Lausling laminated wood bracket of this utility model;

[0027] Among them, 1-insulating partition, 2-cork rubber pad, 3-glue-free laminated wood fastener, 4-hot-pressed polyester resin plastic laminated board fastener, 5-Laminated wood bracket, 6-box wall. Detailed Implementation

[0028] The present invention will now be described in detail so that its advantages and features can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of the present invention.

[0029] The following provides a brief overview of one or more aspects to offer a basic understanding of them. This overview is not an exhaustive summary of all conceived aspects, nor is it intended to identify key or decisive elements of all aspects, nor to define the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form to prepare for the more detailed descriptions that follow.

[0030] like Figure 1-6 As shown, an insulation and noise reduction structure for an ultra-high voltage oil-immersed parallel reactor includes an insulating partition 1, a cork rubber pad 2, glue-free laminated wood fasteners 3, hot-pressed polyester resin plastic laminated board fasteners 4, and a Lausling laminated wood bracket 5. The insulating partition 1 has several layers, and adjacent layers of insulating partition 1 are separated by cork rubber pads 2. The insulating partition 1 is fixed to the tank wall 6 of the ultra-high voltage oil-immersed parallel reactor by the cork rubber pads 2, glue-free laminated wood fasteners 3, hot-pressed polyester resin plastic laminated board fasteners 4, and Lausling laminated wood bracket 5.

[0031] In some implementations, the insulating partition 1 has several holes spaced apart. The insulating partition 1 serves two purposes: first, it can reduce the refraction and reflection of sound waves; second, it can absorb sound waves and convert them into heat energy. Adjacent insulating partitions 1 are separated by cork rubber pads 2, which is equivalent to constructing a thin paper tube with small oil gap insulation structure on the surface of the box wall between the outgoing device and the ground. This further improves the withstand strength near the high-voltage electrode. The cork rubber pads 2 also play an important role in noise attenuation through their design.

[0032] In some specific embodiments, the insulating partition 1 has four layers, which are arranged sequentially along the direction away from the wall of the UHV oil-immersed parallel reactor box as the first insulating partition, the second insulating partition, the third insulating partition, and the fourth insulating partition.

[0033] In some more specific embodiments, the first layer of insulating partition, close to the tank wall, is first fixed to the tank wall 6 of the UHV oil-immersed parallel reactor using cork rubber pads 2 and hot-pressed polyester resin plastic laminate fasteners 4; then, the second layer of insulating partition is fixed to the outside of the first layer of insulating partition using cork rubber pads 2 and hot-pressed polyester resin plastic laminate fasteners 4, and glue-free laminated wood fasteners 3, preferably screw structures, are used. The screw head extends from between the first and second layers of insulating partitions to the opposite side of the tank wall through the second layer of insulating partition. The position of the screw here is at least 300mm away from the dimensions of the hot-pressed polyester resin plastic laminate fasteners 4. The first and second layers of insulating partitions are firmly fixed together using hot-pressed polyester resin plastic laminate nuts; then, the third layer of insulating partition... The partition is fixed to the outside of the second insulating partition using cork rubber pad 2 and glue-free laminated wood fastener 3 used in the previous step. The screw head of the glue-free laminated wood fastener 3 extends from the second to the third insulating partition through the opposite side of the box wall. The screw position here is at least 200mm away from the glue-free laminated wood fastener 3 used in the previous step. The second and third insulating partitions are securely fixed together using glue-free laminated wood nuts. The fourth insulating partition is then fixed to the outside of the third insulating partition using cork rubber pad 2 and glue-free laminated wood fastener 3 used in the previous step. The hot-pressed polyester resin plastic laminated board fastener 4 used around the perimeter is tightened with corresponding nuts. The middle position between the third and fourth insulating partitions is securely fixed with glue-free laminated wood nuts.

[0034] The glue-free laminated wood fasteners 3 used to fix adjacent insulating partitions 1 are staggered and the spacing is controlled between 500 and 700 mm, which can eliminate the problem of through discharge from the screw surface to the box wall in the prior art.

[0035] The insulating partition 1 is fixed to the UHV oil-immersed shunt reactor tank wall using hot-pressed polyester resin plastic laminate fasteners 4, which have good comprehensive mechanical and electrical strength. A Lausling laminated wooden bracket 5 is set at the bottom of the insulating partition 1 as a support. UHV PVB adhesive is evenly applied to the contact position between the Lausling laminated wooden bracket 5 and the UHV oil-immersed shunt reactor tank wall to ensure the stability and reliability of the system during long-term operation of the reactor.

[0036] The UHV oil-immersed parallel reactor insulation and noise reduction structure provided by this utility model uses insulating partitions 1 and cork rubber pads 2 to reduce noise and create small oil gaps in the thin paper tube. In the high field strength area near the high-voltage line end, two adjacent insulating partitions 1 share a single glue-free laminated wood fastener 3. By alternately fixing the insulating partitions 1 with glue-free laminated wood fasteners 3, the insulation withstand strength in this area is further improved. In areas far from high field strength, hot-pressed polyester resin plastic laminated board fasteners 4 and Lausley laminated wood brackets 5, which have good strength and insulation performance, are used to ensure the mechanical strength of the entire system. The overall structure is reasonably designed, easy to operate, and safe and stable during operation. It can improve the insulation strength of the high-voltage line end to ground and absorb and attenuate noise. It is suitable for the design of low-noise reactors with voltage levels of 750kV to 1100kV.

[0037] The implementation process is as follows:

[0038] The first step is to drill fixing holes 7 on the box wall 6 according to the drawing requirements, and weld blind hole nut seats 8 on the corresponding outer side of the box wall 6. The hot-pressed polyester resin plastic laminate fasteners 4 are adapted to the fixing holes 7 and blind hole nut seats 8.

[0039] The second step is to fix the first layer of insulating partition close to the box wall 6 to the box wall 6 using cork rubber pad 2 and hot-pressed polyester resin plastic laminate fastener 4.

[0040] The third step involves securing the second insulating partition to the outside of the first insulating partition using cork rubber pads 2 and the same hot-pressed polyester resin laminate fasteners 4 used in the second step. Simultaneously, using glue-free laminated wood fasteners 3, screws are inserted between the first and second insulating partitions, protruding from the second insulating partition onto the opposite side of the box wall. The screws at this point must be at least 300mm away from the dimensions of the hot-pressed polyester resin laminate fasteners 4. At this point, except for the hot-pressed polyester resin laminate fasteners 4 used around the perimeter, all other components are securely fixed to the first and second insulating partitions using hot-pressed polyester resin laminate nuts.

[0041] Fourth, the third layer of insulation is fixed to the outside of the second layer of insulation using cork rubber pad 2 and the glue-free laminated wood fastener 3 used in the third step. Simultaneously, using the glue-free laminated wood fastener 3, the screw head extends from between the second and third layers of insulation towards the opposite side of the box wall, with the screw position offset from the glue-free laminated wood fastener 3 used in the previous step by at least 200mm. At this point, except for the hot-pressed polyester resin plastic laminated board fastener 4 used around the perimeter and the newly added glue-free laminated wood fastener 3, all the second and third layers of insulation are securely fixed in the middle with glue-free laminated wood nuts.

[0042] Fifth step, fix the fourth layer of insulating partition to the outside of the third layer of insulating partition using cork rubber pad 2 and glue-free laminated wood fastener 3 used in the fourth step, and tighten the hot-pressed polyester resin plastic laminated board fastener 4 around the perimeter with the corresponding nuts; use glue-free laminated wood nuts to firmly fix the middle of the third layer of insulating partition and the middle of the fourth layer of insulating partition.

[0043] Step 6: Install the Lausling laminated wood bracket 5 at the lower part of the insulating partition 1. Ensuring good contact between the insulating partition 1 and the Lausling laminated wood bracket 5, use hot-pressed polyester resin plastic laminated board screws and nuts to fix the Lausling laminated wood bracket 5 to the box wall 6. Apply ultra-high voltage PVB adhesive evenly to the contact area between the Lausling laminated wood bracket 5 and the box wall 6. Simultaneously, tighten the hot-pressed polyester resin plastic laminated board fasteners 4 around the perimeter and the glue-free laminated wood nuts added in step 5. This ensures the entire structure possesses both sufficient mechanical strength and a certain degree of flexibility, integrating advantages such as reliable mechanical structure, reliable insulation, and noise reduction and absorption. It effectively solves the problems of high ground potential and low noise attenuation in the high-voltage line outlet area. It features a reasonable structure, ease of operation, safe and stable operation, and the ability to improve the insulation strength of the high-voltage line to ground and absorb and attenuate noise. It is suitable for low-noise reactor designs at voltage levels of 750kV to 1100kV.

[0044] Example 1

[0045] like Figure 1-6 As shown, an insulation and noise reduction structure for an ultra-high voltage oil-immersed parallel reactor includes an insulating partition 1, a cork rubber pad 2, glue-free laminated wood fasteners 3, hot-pressed polyester resin plastic laminated board fasteners 4, and a Lausling laminated wood bracket 5. The insulating partition 1 has four layers, and adjacent layers of insulating partition 1 are separated by cork rubber pads 2. The insulating partition 1 is fixed to the tank wall 6 of the ultra-high voltage oil-immersed parallel reactor by the glue-free laminated wood fasteners 3, the hot-pressed polyester resin plastic laminated board fasteners 4, and the Lausling laminated wood bracket 5.

[0046] Multiple 3mm diameter holes are formed on the insulating partition 1, with a 30mm spacing between adjacent holes. The purpose of the insulating partition 1 is twofold: firstly, to reduce the refraction and reflection of sound waves; and secondly, to absorb sound waves and convert them into heat energy. Adjacent insulating partitions 1 are separated by cork rubber pads 2, which effectively create a thin paper tube with small oil gap insulation structure on the surface of the enclosure between the outgoing line device and the ground, further enhancing the withstand strength near the high-voltage electrodes. The cork rubber pads 2 are 8mm thick and play a crucial role in noise attenuation.

[0047] The insulating partition 1 has four layers, which are arranged in sequence along the direction away from the wall of the UHV oil-immersed parallel reactor box: the first insulating partition, the second insulating partition, the third insulating partition, and the fourth insulating partition. The thickness of each insulating partition is 2mm.

[0048] The insulating partition 1 is fixed to the UHV oil-immersed parallel reactor tank wall using hot-pressed polyester resin plastic laminate fasteners 4, which have good comprehensive mechanical and electrical strength. A Lausley laminated wood bracket 5 is set at the bottom of the insulating partition 1 as a support. UHV PVB adhesive is evenly applied to the contact position between the Lausley laminated wood bracket 5 and the tank wall 6 to ensure the stability and reliability of the system during long-term operation of the reactor.

[0049] The UHV oil-immersed parallel reactor insulation and noise reduction structure provided in this embodiment uses insulating partitions 1 and cork rubber pads 2 to reduce noise and create small oil gaps in the thin paper tube. In high field strength areas near the high-voltage line end, two adjacent insulating partitions 1 share a single glue-free laminated wood fastener 3. By alternately fixing the insulating partitions 1 with glue-free laminated wood fasteners 3, the insulation withstand strength in this area is further improved. In areas far from high field strength, hot-pressed polyester resin plastic laminated board fasteners 4 and Lausley laminated wood brackets 5, which have good strength and insulation performance, are used to ensure the mechanical strength of the entire system. The overall structure is reasonably designed, easy to operate, and safe and stable during operation. It can improve the insulation strength of the high-voltage line end to ground and absorb and attenuate noise.

[0050] The implementation process is as follows:

[0051] The first step is to drill fixing holes 7 on the box wall 6 according to the drawing requirements, and weld blind hole nut seats 8 on the corresponding outer side of the box wall 6. The hot-pressed polyester resin plastic laminate fasteners 4 are adapted to the fixing holes 7 and blind hole nut seats 8.

[0052] The second step is to fix the first layer of insulating partition close to the box wall 6 to the box wall 6 using cork rubber pad 2 and hot-pressed polyester resin plastic laminate fastener 4.

[0053] The third step involves securing the second insulating partition to the outside of the first insulating partition using cork rubber pads 2 and the same hot-pressed polyester resin laminate fasteners 4 used in the second step. Simultaneously, glue-free laminated wood fasteners 3 (screw structure) are used, with the screw heads protruding from the first and second insulating partitions towards the opposite side of the box wall. The screw positions should be at least 400mm away from the dimensions of the hot-pressed polyester resin laminate fasteners 4. At this point, except for the hot-pressed polyester resin laminate fasteners 4 used around the perimeter, all other components are securely fixed to the first and second insulating partitions using hot-pressed polyester resin laminate nuts.

[0054] Fourth, fix the third layer of insulation to the outside of the second layer of insulation using cork rubber pad 2 and the glue-free laminated wood fastener 3 used in the third step. At the same time, using the glue-free laminated wood fastener 3, insert the screw head from between the second and third layers of insulation towards the opposite side of the box wall, ensuring that the screw position is at least 300mm away from the size of the glue-free laminated wood fastener 3 used in the previous step. At this point, except for the hot-pressed polyester resin plastic laminated board fastener 4 used around the perimeter and the newly added glue-free laminated wood fastener 3, secure the middle of the second layer of insulation to the middle of the third layer of insulation using glue-free laminated wood nuts.

[0055] Fifth step, fix the fourth layer of insulating partition to the outside of the third layer of insulating partition using cork rubber pad 2 and glue-free laminated wood fastener 3 used in the fourth step, and tighten the hot-pressed polyester resin plastic laminated board fastener 4 around the perimeter with the corresponding nuts; use glue-free laminated wood nuts to firmly fix the middle of the third layer of insulating partition and the middle of the fourth layer of insulating partition.

[0056] Step 6: Install the Lausling laminated wood bracket 5 at the lower part of the insulating partition 1. On the premise of ensuring good contact between the insulating partition 1 and the Lausling laminated wood bracket 5, use hot-pressed polyester resin plastic laminated board screw nuts to fix the Lausling laminated wood bracket 5 to the box wall 6. Apply ultra-high voltage PVB glue evenly to the contact part between the Lausling laminated wood bracket 5 and the box wall 6. At the same time, tighten the hot-pressed polyester resin plastic laminated board fasteners 4 around the perimeter and the glue-free laminated wood nuts added in step 5 into place. Finally, the entire structure has both sufficient mechanical strength and a certain degree of flexibility, integrating the advantages of reliable mechanical structure, reliable insulation, and noise obstruction and absorption.

[0057] The insulating partition 1, cork rubber pad 2, glue-free laminated wood fasteners 3 (purchased from Hunan Guangxin manufacturer), hot-pressed polyester resin plastic laminated board fasteners 4 (purchased from Chongqing Youbo manufacturer), Laoshiling laminated wood bracket 5 (purchased from Laoshiling, an agent of Shanghai Yazhong), and various nuts and screws used in this utility model can all be purchased on the market.

[0058] The parts or structures not specifically described in this utility model can be made using existing technology or existing products, and will not be elaborated here.

[0059] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An insulation and noise reduction structure for an ultra-high voltage oil-immersed parallel reactor, characterized in that, It includes an insulating partition, a cork rubber pad, glue-free laminated wood fasteners, hot-pressed polyester resin plastic laminated board fasteners, and a Lausling laminated wood bracket. The insulating partition has several layers, and adjacent layers of insulating partition are separated by cork rubber pads. The insulating partition is fixed to the wall of the UHV oil-immersed parallel reactor box by the cork rubber pad, glue-free laminated wood fasteners, hot-pressed polyester resin plastic laminated board fasteners, and Lausling laminated wood bracket.

2. The insulation and noise reduction structure for an ultra-high voltage oil-immersed parallel reactor according to claim 1, characterized in that, The insulating partition has several holes with a diameter of 3mm, and the distance between two adjacent holes is 30mm.

3. The insulation and noise reduction structure for an ultra-high voltage oil-immersed parallel reactor according to claim 1, characterized in that, The insulating partition has four layers, arranged sequentially from the wall away from the UHV oil-immersed parallel reactor box: the first insulating partition, the second insulating partition, the third insulating partition, and the fourth insulating partition. The thickness of each insulating partition is 2mm.

4. The insulation and noise reduction structure for an ultra-high voltage oil-immersed parallel reactor according to claim 3, characterized in that, The first layer of insulation is fixed to the wall of the UHV oil-immersed shunt reactor tank using cork rubber pads and hot-pressed polyester resin plastic laminate fasteners. The second layer of insulation is fixed to the outside of the first layer of insulation and uses glue-free laminated wood fasteners with screw heads protruding from the first and second layers of insulation between the screw heads and the tank wall to the opposite side. The third layer of insulation is fixed to the outside of the second layer of insulation and uses glue-free laminated wood fasteners with screw heads protruding from the second and third layers of insulation between the screw heads and the tank wall to the opposite side. The fourth layer of insulation is fixed to the outside of the third layer of insulation.

5. The insulation and noise reduction structure for an ultra-high voltage oil-immersed parallel reactor according to claim 4, characterized in that, The location of the glue-free laminated wood fastener, whose screw head protrudes from the second insulating partition to the opposite side of the box wall between the first and second insulating partitions, is at least 300mm away from the hot-pressed polyester resin laminated plastic fastener.

6. The insulation and noise reduction structure for an ultra-high voltage oil-immersed parallel reactor according to claim 1, characterized in that, The glue-free laminated wood fasteners are staggered and the spacing is controlled between 500 and 700 mm.

7. The insulation and noise reduction structure for an ultra-high voltage oil-immersed parallel reactor according to claim 1, characterized in that, The thickness of the cork rubber pad is 8mm.

8. The insulation and noise reduction structure for an ultra-high voltage oil-immersed parallel reactor according to claim 1, characterized in that, The lower part of the insulating partition is provided with a Lausling laminated wood bracket, which is fixed to the wall of the UHV oil-immersed parallel reactor box.

9. The insulation and noise reduction structure for an ultra-high voltage oil-immersed parallel reactor according to claim 8, characterized in that, The contact area between the Lausling laminated wood bracket and the wall of the UHV oil-immersed parallel reactor box is uniformly coated with UHV PVB adhesive.

10. The insulation and noise reduction structure for an ultra-high voltage oil-immersed parallel reactor according to claim 1, characterized in that, The insulating partition is fixed to the wall of the UHV oil-immersed parallel reactor box by hot-pressed polyester resin plastic laminate fasteners.

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