High-voltage bus insulation box and assembling method thereof

Abstract

The high-voltage bus insulation box comprises an upper box body and a lower box body, upper extending blocks are arranged on the two sides of the upper box body, inner bent parts are arranged at the outer side ends of the upper extending blocks, lower extending blocks are arranged on the two sides of the lower box body, outer bent parts are arranged at the outer side ends of the lower extending blocks, and the outer walls of the inner bent parts are tightly clamped with the inner walls of the outer bent parts; limiting blocks are arranged at the two ends of the upper end face of the lower extending block, and the two limiting blocks on the lower extending block are symmetrically arranged and tightly clamped with the two end faces of the upper extending block. The high-voltage bus insulation box is compact in structure, firm in fixation and high in overall reliability and safety, the problems of loosening, aging, falling off and the like are not prone to occurring after long-term use, and the fixing and insulation protection effects of the high-voltage bus insulation box on a bus can be effectively guaranteed. The invention further discloses an assembling method of the high-voltage bus insulation box, the operation is simple, the upper box body and the lower box body can be conveniently and rapidly assembled in a complex working environment through a vertical pressing or horizontal inserting method, the stability is good, and the reliability is high.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical insulation devices, in particular to a high-voltage busbar insulation box and an assembling method thereof. Background Art

[0002] Busbar insulation boxes are critical components in electrical systems used to protect and isolate busbars. They primarily protect the busbars (the conductive bars or wires used to distribute power) from external environmental factors and provide safe operating conditions. During transformer operation in a substation, insulation failure is common in medium and low voltage leads, outdoor busbars, and terminal blocks. Foreign objects such as metal, tape, and branches, as well as harsh environments like high temperature and humidity, can accelerate the degradation of insulation performance of various insulating materials covering the medium and low voltage sides, leading to insulation degradation or even failure.

[0003] Prefabricated high-voltage busbar insulation boxes are commonly used as insulating components on the medium- and low-voltage sides of main transformers, securing and insulating the busbars. However, existing high-voltage busbar insulation boxes have poor mechanical properties and are prone to loosening, skewing, aging, and even falling off over long-term use. This poses a significant safety hazard and impacts the normal operation of the power grid. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-voltage busbar insulation box and an assembly method thereof to solve the above defects.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A high-voltage busbar insulation box comprises: an upper box body and a lower box body, upper extension blocks are provided on both sides of the upper box body, and the outer ends of the upper extension blocks are provided with inner bends, and lower extension blocks are provided on both sides of the lower box body, and the outer ends of the lower extension blocks are provided with outer bends, and the outer walls of the inner bends are tightly engaged with the inner walls of the outer bends; limiting blocks are provided at both ends of the upper end surface of the lower extension block, and the two limiting blocks on the lower extension block are symmetrically arranged and tightly engaged with the two end surfaces of the upper extension block.

[0007] Preferably, the upper box body and the lower box body are both n-type structures, and the upper box body and the lower box body of the n-type structure are relatively merged together to form a structure with a transverse square through cavity, and a vertical through hole is provided in the center of the lower end face of the lower box body, and the through hole passes through the transverse square through cavity.

[0008] Preferably, both ends of the upper end surface of the lower extension block are provided with limit block mounting holes, the limit block is arranged obliquely, and its outer end is fixed on the inner wall of the limit block mounting hole, and its inner end is suspended above the lower extension block.

[0009] Preferably, the upper extension block and the lower extension block are provided with overlapping mounting holes, bolts are movably inserted into the mounting holes, and nuts are threadedly sleeved on the ends of the bolts.

[0010] Preferably, the mounting hole is provided on the lower extension block between the two limiting blocks.

[0011] Preferably, there are at least two mounting holes.

[0012] Preferably, the nut is engaged between the inner bend and the upper box body, and its two sides are respectively in contact with the inner wall of the inner bend and the outer wall of the upper box body, so that the nut can only move vertically relative to the upper box body and cannot rotate.

[0013] Preferably, a transverse protruding ridge is provided on the inner wall of the outer curved portion of the lower box body, the outer end surface of the transverse protruding ridge is fitted and fixed to the inner wall of the outer curved portion, and the inner end surface thereof is a slope structure.

[0014] Preferably, the upper box body and the upper extension block, and the upper extension block and the inner bend portion are all integrally formed.

[0015] Preferably, a method for assembling a high-voltage busbar insulation box comprises the following steps:

[0016] S1. Preparation of various components: prepare the upper box body and the lower box body, and equip them with the corresponding number of accessories;

[0017] S2. Assembly: Press or insert the upper box body gradually into the lower box body by vertical downward pressure or horizontal insertion, and make the outer wall of the inner curved portion of the upper box body tightly engage with the inner wall of the outer curved portion of the lower box body, and make the two end surfaces of the upper extension block tightly engage with the inner end surfaces of the two limit blocks respectively;

[0018] S3. Adjust and lock: Make appropriate fine adjustments to the relative positions of the upper box body and the lower box body, and then fix and lock the upper box body and the lower box body with bolts to realize the assembly between the upper box body and the lower box body, thereby completing the assembly process of the entire high-voltage busbar insulation box.

[0019] The beneficial effects of the present invention are:

[0020] (1) The high-voltage busbar insulation box of the present invention can reinforce the entire high-voltage busbar insulation box through the upper extension blocks on both sides of the upper box body and the lower extension blocks on both sides of the lower box body. The high-voltage busbar insulation box has better mechanical properties in combination with the inner bend portion provided on the upper extension block and the outer bend portion provided on the lower extension block. The upper box body and the lower box body are fixed by bolts through the close engagement of the inner bend portion and the outer bend portion, thereby achieving limited fixation of the upper box body and the lower box body. The reliability and safety of the entire high-voltage busbar insulation box are higher, and it is not easy to become loose, aged, or fall off during long-term use, thereby effectively ensuring the fixation of the high-voltage busbar insulation box to the busbar and the insulation protection function.

[0021] (2) The assembly method of the high-voltage busbar insulation box of the present invention is simple to operate. It facilitates the rapid fixation between the upper box body and the lower box body by vertical pressing down or horizontal insertion, and is convenient for rapid assembly in a complex working environment. The operation is simple and efficient, the stability is good, and the reliability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 : Schematic diagram of the overall structure of the high-voltage busbar insulation box of the present invention;

[0023] Figure 2 : Schematic diagram of the overall and partial cross-sectional structure of the high-voltage busbar insulation box of the present invention;

[0024] Figure 3 : A schematic diagram of the overall structure of the high-voltage busbar insulation box of the present invention in a vertical downward pressing method assembly state;

[0025] Figure 4 : Schematic diagram of the overall and partial cross-sectional structure of the high-voltage busbar insulation box of the present invention in the vertical pressing method assembly state;

[0026] Figure 5 : A schematic diagram of the overall structure of the horizontal insertion method assembly state of the high-voltage busbar insulation box of the present invention;

[0027] Figure 6 : Schematic diagram of the overall and partial cross-sectional structure of the horizontal insertion assembly state of the high-voltage busbar insulation box of the present invention. DETAILED DESCRIPTION

[0028] The present invention is further described below with reference to the embodiments. It should be noted that these are merely examples and illustrations of the concept of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the claims, they should be deemed to fall within the scope of protection of the present invention.

[0029] Example 1:

[0030] Figure 1 This is a schematic diagram of the overall structure of the high-voltage busbar insulation box of the present invention. Figure 2 The figure is a schematic diagram of the overall and partial cross-sectional structure of the high-voltage busbar insulation box of the present invention. Figure 1 、 2 As shown, a high-voltage busbar insulation box includes an upper box body 10 and a lower box body 20.

[0031] Upper extension blocks 11 are provided on both sides of the upper box body 10, and inner bends 12 are provided at the outer ends of the upper extension blocks 11. Lower extension blocks 21 are provided on both sides of the lower box body 20, and outer bends 22 are provided at the outer ends of the lower extension blocks 21. The outer walls of the inner bends 12 and the inner walls of the outer bends 22 are tightly engaged. The upper extension blocks 11 on both sides of the upper box body 10 and the lower extension blocks 21 on both sides of the lower box body 20 can reinforce the entire high-voltage busbar insulation box. The inner bends 12 provided on the upper extension blocks 11 and the outer bends 22 provided on the lower extension blocks 21 provide the high-voltage busbar insulation box with better mechanical properties. The tight engagement of the inner bends 12 and the outer bends 22 allows the upper box body 10 and the lower box body 20 to be fixed in position.

[0032] Limit blocks 40 are provided at both ends of the upper end surface of the lower extension block 21. The two limit blocks 40 on the lower extension block 21 are symmetrically arranged and tightly engage with the end surfaces of the upper extension block 11. The tight engagement of the limit blocks 40 provided on the lower extension block 21 with the upper extension block 11 can achieve the limited fixation of the upper box body 10 and the lower box body 20.

[0033] The high-voltage busbar insulation box of the present invention has a compact structure, is firmly fixed, has high overall reliability and safety, and is not prone to loosening, aging, falling off, and other problems during long-term use. It can effectively ensure the high-voltage busbar insulation box's role in fixing and insulating the busbar.

[0034] Example 2:

[0035] Figure 1 This is a schematic diagram of the overall structure of the high-voltage busbar insulation box of the present invention. Figure 2 The figure is a schematic diagram of the overall and partial cross-sectional structure of the high-voltage busbar insulation box of the present invention. Figure 1 、 2 As shown, a high-voltage busbar insulation box includes an upper box body 10 and a lower box body 20.

[0036] Upper extension blocks 11 are provided on both sides of the upper box body 10, and inner bends 12 are provided at the outer ends of the upper extension blocks 11. Lower extension blocks 21 are provided on both sides of the lower box body 20, and outer bends 22 are provided at the outer ends of the lower extension blocks 21. The outer walls of the inner bends 12 and the inner walls of the outer bends 22 are tightly engaged. The upper extension blocks 11 on both sides of the upper box body 10 and the lower extension blocks 21 on both sides of the lower box body 20 can reinforce the entire high-voltage busbar insulation box. The inner bends 12 provided on the upper extension blocks 11 and the outer bends 22 provided on the lower extension blocks 21 provide the high-voltage busbar insulation box with better mechanical properties. The tight engagement of the inner bends 12 and the outer bends 22 allows the upper box body 10 and the lower box body 20 to be fixed in position.

[0037] Limit blocks 40 are provided at both ends of the upper end surface of the lower extension block 21. The two limit blocks 40 on the lower extension block 21 are symmetrically arranged and tightly engage with the end surfaces of the upper extension block 11. The tight engagement of the limit blocks 40 provided on the lower extension block 21 with the upper extension block 11 can achieve the limited fixation of the upper box body 10 and the lower box body 20.

[0038] The high-voltage busbar insulation box of the present invention has a compact structure, is firmly fixed, has high overall reliability and safety, and is not prone to loosening, aging, falling off, and other problems during long-term use. It can effectively ensure the high-voltage busbar insulation box's role in fixing and insulating the busbar.

[0039] Figure 3 : A schematic diagram of the overall structure of the high-voltage busbar insulation box of the present invention in a vertical downward pressing method assembly state, Figure 4 : Schematic diagram of the overall and partial cross-sectional structure of the high-voltage busbar insulation box of the present invention in the vertical pressing method assembly state, Figure 5 : A schematic diagram of the overall structure of the horizontal insertion method assembly state of the high-voltage busbar insulation box of the present invention, Figure 6 : The overall and partial cross-sectional structural diagram of the horizontal insertion method assembly state of the high-voltage busbar insulation box of the present invention. Figure 3-6 As shown, a method for assembling a high-voltage busbar insulation box of the present invention comprises the following steps:

[0040] S1. Preparation of components: prepare the upper box body 10 and the lower box body 20, and equip them with the corresponding number of accessories;

[0041] S2. Assembly: By vertical downward pressing or horizontal insertion, gradually press or insert the upper box body 10 into the lower box body 20, and make the outer wall of the inner curved portion 12 of the upper box body 10 tightly engage with the inner wall of the outer curved portion 22 of the lower box body 20, and make the two end surfaces of the upper extension block 11 tightly engage with the inner end surfaces of the two limit blocks 40 respectively;

[0042] S3. Adjust and lock: fine-tune the relative positions of the upper box body 10 and the lower box body 20 appropriately, and then fix and lock the upper box body 10 and the lower box body 20 with bolts to realize the assembly between the upper box body 10 and the lower box body 20, thereby completing the assembly process of the entire high-voltage busbar insulation box.

[0043] The assembly method of the high-voltage busbar insulation box of the present invention is simple to operate. It facilitates the rapid fixation between the upper box body 10 and the lower box body 20 by vertical pressing or horizontal insertion, and is convenient for rapid assembly in a complex working environment. The operation is simple and efficient, and the stability is good and the reliability is high.

[0044] Example 3:

[0045] Figure 1 This is a schematic diagram of the overall structure of the high-voltage busbar insulation box of the present invention. Figure 2 The figure is a schematic diagram of the overall and partial cross-sectional structure of the high-voltage busbar insulation box of the present invention. Figure 1 、 2 As shown, a high-voltage busbar insulation box includes an upper box body 10 and a lower box body 20.

[0046] Both the upper and lower housings 10 and 20 are n-type structures. They are joined together to form a transverse square cavity. A vertical through-hole 23 is provided at the center of the lower end face of the lower housing 20, extending through the transverse square cavity. This through-hole 23 is used to connect an insulator.

[0047] Both sides of the upper box body 10 are provided with upper extension blocks 11, and the outer ends of the upper extension blocks 11 are provided with inner curved portions 12; both sides of the lower box body 20 are provided with lower extension blocks 21, and the outer ends of the lower extension blocks 21 are provided with outer curved portions 22; the upper box body 10 and the upper extension blocks 11, as well as the upper extension blocks 11 and the inner curved portions 12, are all integrally formed. A transverse protruding ridge is provided on the inner wall of the outer curved portion 22 of the lower box body 20, and the outer end surface of the transverse protruding ridge is fixedly fitted with the inner wall of the outer curved portion 22, and the inner end surface is a beveled structure. The outer wall of the inner curved portion 12 of the upper box body 10 can slide and engage under the transverse protruding ridge on the inner wall of the outer curved portion 22 of the lower box body 20 through the inner end surface bevel of the transverse protruding ridge on the inner wall of the outer curved portion 22, so that the outer wall of the inner curved portion 12 is tightly fitted with the inner wall of the outer curved portion 22.

[0048] The upper extension blocks 11 on either side of the upper housing 10 and the lower extension blocks 21 on either side of the lower housing 20 reinforce the entire high-voltage busbar insulation box. Combined with the inner curved portions 12 on the upper extension blocks 11 and the outer curved portions 22 on the lower extension blocks 21, the high-voltage busbar insulation box exhibits improved mechanical properties. The close engagement of the inner curved portions 12 and the outer curved portions 22 secures the upper housing 10 and the lower housing 20.

[0049] Limit block mounting holes are provided at both ends of the upper end surface of the lower extension block 21. Limit blocks 40 are also provided at both ends of the upper end surface of the lower extension block 21. The limit blocks 40 are arranged at an angle, with their outer ends fixed to the inner walls of the limit block mounting holes and their inner ends suspended above the lower extension block 21. The two limit blocks 40 on the lower extension block 21 are symmetrically arranged and tightly engage with the end surfaces of the upper extension block 11. The tight engagement of the limit blocks 40 on the lower extension block 21 with the upper extension block 11 enables the upper and lower box bodies 10 and 20 to be fixed in position.

[0050] The upper extension block 11 and the lower extension block 21 are provided with overlapping mounting holes 30. There are at least two mounting holes 30, which are located on the lower extension block 21 between the two stop blocks 40. Bolts 51 are movably inserted from bottom to top into the mounting holes 30, and a nut 52 is threadedly sleeved on the end of the bolt 51. The nut 52 is engaged between the inner curved portion 12 and the upper box body 10, with its two sides respectively contacting the inner wall of the inner curved portion 12 and the outer wall of the upper box body 10, so that the nut 52 cannot rotate relative to the upper box body 10 and can only move in the vertical direction.

[0051] The high-voltage busbar insulation box of the present invention has a compact structure, is firmly fixed, has high overall reliability and safety, and is not prone to loosening, aging, falling off, and other problems during long-term use. It can effectively ensure the high-voltage busbar insulation box's role in fixing and insulating the busbar.

[0052] Example 4:

[0053] Figure 1 This is a schematic diagram of the overall structure of the high-voltage busbar insulation box of the present invention. Figure 2 The figure is a schematic diagram of the overall and partial cross-sectional structure of the high-voltage busbar insulation box of the present invention. Figure 1 、 2 As shown, a high-voltage busbar insulation box includes an upper box body 10 and a lower box body 20.

[0054] Both the upper and lower housings 10 and 20 are n-type structures. They are joined together to form a transverse square cavity. A vertical through-hole 23 is provided at the center of the lower end face of the lower housing 20, extending through the transverse square cavity. This through-hole 23 is used to connect an insulator.

[0055] Both sides of the upper box body 10 are provided with upper extension blocks 11, and the outer ends of the upper extension blocks 11 are provided with inner curved portions 12; both sides of the lower box body 20 are provided with lower extension blocks 21, and the outer ends of the lower extension blocks 21 are provided with outer curved portions 22; the upper box body 10 and the upper extension blocks 11, as well as the upper extension blocks 11 and the inner curved portions 12, are all integrally formed. A transverse protruding ridge is provided on the inner wall of the outer curved portion 22 of the lower box body 20, and the outer end surface of the transverse protruding ridge is fixedly fitted with the inner wall of the outer curved portion 22, and the inner end surface is a beveled structure. The outer wall of the inner curved portion 12 of the upper box body 10 can slide and engage under the transverse protruding ridge on the inner wall of the outer curved portion 22 of the lower box body 20 through the inner end surface bevel of the transverse protruding ridge on the inner wall of the outer curved portion 22, so that the outer wall of the inner curved portion 12 is tightly fitted with the inner wall of the outer curved portion 22.

[0056] The upper extension blocks 11 on either side of the upper housing 10 and the lower extension blocks 21 on either side of the lower housing 20 reinforce the entire high-voltage busbar insulation box. Combined with the inner curved portions 12 on the upper extension blocks 11 and the outer curved portions 22 on the lower extension blocks 21, the high-voltage busbar insulation box exhibits improved mechanical properties. The close engagement of the inner curved portions 12 and the outer curved portions 22 secures the upper housing 10 and the lower housing 20.

[0057] Both ends of the upper end surface of the lower extension block 21 are provided with stopper mounting holes, and both of these stopper mounting holes are equipped with stopper blocks 40. The stopper blocks 40 are integrally formed with the lower extension block 21 and the lower box body 20. Due to the material of the insulation box itself, the bend between the stopper blocks 40 and the lower extension block 21 has a certain degree of elasticity. The stopper blocks 40 are arranged at an angle, with their outer ends fixed to the inner walls of the stopper mounting holes and their inner ends suspended above the lower extension block 21. The two stopper blocks 40 on the lower extension block 21 are symmetrically arranged and tightly engage with the end surfaces of the upper extension block 11.

[0058] When the pressing method is used for installation, the upper extension block 11 may press one of the limit blocks 40 downward until it is flush with the lower extension block 21. After the relative displacement of the upper box body 10 and the lower box body 20 is adjusted horizontally and adjusted to the appropriate position, the limit block 40 in the deflected state returns to its original state. When the insertion method is used for installation, the upper extension block 11 presses the limit block 40 at the insertion end downward until it is flush with the lower extension block 21. When the upper box body 10 is over-installed, the limit block 40 in the deflected state is reset. The other limit block 40 is pushed in the opposite direction for a distance and then automatically pushes the upper box body 10 back to the appropriate position. The limit block 40 set on the lower extension block 21 is tightly engaged with the upper extension block 11, which can achieve the limit fixation of the upper box body 10 and the lower box body 20.

[0059] The upper extension block 11 and the lower extension block 21 are provided with overlapping mounting holes 30. There are at least two mounting holes 30, which are arranged on the lower extension block 21 between the two limit blocks 40. Bolts 51 are movably inserted from bottom to top in the mounting holes 30, and nuts 52 are threadedly sleeved on the ends of the bolts 51. The nut 52 is engaged between the inner curved portion 12 and the upper box body 10, and its two sides respectively fit against the inner wall of the inner curved portion 12 and the outer wall of the upper box body 10. The cooperation between the inner curved portion 12 and the upper box body 10 can restrict the nut 52, making it unable to rotate relative to the upper box body 10 and only allowing it to move in the vertical direction. This not only facilitates the installation of the bolts 51 and nuts 52, but also helps reduce the impact of vibration on the bolts 51 and nuts 52.

[0060] The high-voltage busbar insulation box of the present invention has a compact structure, is firmly fixed, has high overall reliability and safety, and is not prone to loosening, aging, falling off, and other problems during long-term use. It can effectively ensure the high-voltage busbar insulation box's role in fixing and insulating the busbar.

[0061] Figure 3 : A schematic diagram of the overall structure of the high-voltage busbar insulation box of the present invention in a vertical downward pressing method assembly state, Figure 4 : Schematic diagram of the overall and partial cross-sectional structure of the high-voltage busbar insulation box of the present invention in the vertical pressing method assembly state, Figure 5 : A schematic diagram of the overall structure of the horizontal insertion method assembly state of the high-voltage busbar insulation box of the present invention, Figure 6 : Schematic diagram of the overall and partial cross-sectional structure of the horizontal insertion assembly state of the high-voltage busbar insulation box of the present invention.

[0062] like Figure 3-6 As shown, a method for assembling a high-voltage busbar insulation box of the present invention comprises the following steps:

[0063] S1. Preparation of various components: prepare the upper box body 10 and the lower box body 20, and equip them with corresponding accessories, including bolts 51, nuts 52, etc.

[0064] S2. Assembly: By vertically pressing down or horizontally inserting, gradually press or insert the upper box body 10 into the lower box body 20, and ensure that the outer wall of the inner curved portion 12 of the upper box body 10 is tightly engaged with the inner wall of the outer curved portion 22 of the lower box body 20, and that the two end surfaces of the upper extension block 11 are tightly engaged with the inner end surfaces of the two limit blocks 40. The specific steps are as follows:

[0065] (1) Vertical downward pressure method:

[0066] like Figure 3 、 Figure 4As shown, first, the upper box body 10 is moved relative to the lower box body 20 by vertical pressure. Then, the outer curved portion 22 of the lower box body 20 is designed as a protruding end, and its end adopts a slope structure, wherein the slope angle is α, preferably in the range of 15° to 45°, so as to achieve a smooth transition during the assembly process; when the upper box body 10 is pressed down, the slope of the inner curved portion 12 contacts the outer curved portion 22 of the lower box body 20, and the inner curved portion 12 pushes the outer curved portion 22 to expand outward through elastic deformation. Finally, as the upper box body 10 continues to move downward, the outer curved portion 22 gradually returns to its original shape, and the upper box body 10 is firmly locked by the limiting effect of the outer curved portion 22, and the outer wall of the inner curved portion 12 of the upper box body 10 is tightly engaged with the inner wall of the outer curved portion 22 of the lower box body 20, so that the two end faces of the upper extension block 11 are tightly engaged with the inner end faces of the two limit blocks 40 respectively. During this process, the elastic modulus and yield strength of the outer curved portion 22 must meet a specific range to ensure that it can be fully restored after deformation and maintain a stable locking force.

[0067] (2) Horizontal insertion method:

[0068] like Figure 5 、 Figure 6 As shown, first, the upper box body 10 and the lower box body 20 move relative to each other in the horizontal direction. Then, the protruding end of the inner curved portion 12 is designed as a guide slope, and the outer curved portion 22 has a matching guide groove structure; when the upper box body 10 is inserted horizontally, the inner curved portion 12 slides along the slope of the outer curved portion 22, and one of the limit blocks 40 undergoes elastic deformation during the insertion process until the upper box body 10 is completely embedded in the lower box body 20. The other limit block 40 blocks the end of the inner curved portion 12, and the deformed limit block 40 resets so that the two end faces of the upper extension block 11 are respectively tightly engaged with the inner end faces of the two limit blocks 40. The initial fixation of the upper box body 10 and the lower box body 20 is achieved by limiting the inner curved portion 12. Finally, the bolts 51 and nuts 52 are used for fixing.

[0069] In the vertical pressing method or the horizontal insertion method, to ensure the reliability of the assembly process and the overall performance of the insulation box, the material selection of the outer curved portion 22 and the inner curved portion 12 must meet the following requirements:

[0070] Elastic modulus: The elastic modulus of the material of the outer curved portion 22 should be between 2 GPa and 10 GPa to ensure that it has sufficient elastic deformation capability.

[0071] Yield strength: The yield strength of the material of the inner bend 12 should be greater than 200 MPa to withstand the mechanical stress during the assembly process.

[0072] Surface treatment: The contact surfaces of the outer curved portion 22 and the inner curved portion 12 may be subjected to surface hardening treatment, such as nitriding or plating, to improve wear resistance and fatigue resistance.

[0073] In addition, the fitting clearance between the upper box body 10 and the lower box body 20 needs to be controlled within the range of 0.1 mm to 0.5 mm to ensure that the assembled insulation box has good sealing and mechanical stability.

[0074] S3. Adjust and lock:

[0075] The relative positions of the upper box body 10 and the lower box body 20 are appropriately fine-tuned so that the mounting hole 30 on the upper extension block 11 overlaps with the mounting hole 30 on the lower extension block 21; the nut 52 is engaged with the mounting hole 30 of the upper extension block 11 between the inner bend 12 and the upper box body 10; the bolt 51 is then inserted from bottom to top into the mounting hole 30 of the upper extension block 11, the mounting hole 30 of the lower extension block 21 and the nut 52, and the bolt 51 is rotated to fix and lock the upper box body 10 and the lower box body 20 to realize the assembly between the upper box body 10 and the lower box body 20, thereby completing the assembly process of the entire high-voltage busbar insulation box.

[0076] The assembly method of the high-voltage busbar insulation box of the present invention is simple to operate. It facilitates the rapid fixation between the upper box body 10 and the lower box body 20 by vertical pressing or horizontal insertion, and is convenient for rapid assembly in a complex working environment. The operation is simple and efficient, and the stability is good and the reliability is high.

[0077] The above is an exemplary description of the invention. Obviously, the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A high-voltage busbar insulation box, characterized in that: include: An upper box body (10) and a lower box body (20) are provided. Upper extension blocks (11) are provided on both sides of the upper box body (10). An inner bend (12) is provided at the outer end of the upper extension block (11). Lower extension blocks (21) are provided on both sides of the lower box body (20). An outer bend (22) is provided at the outer end of the lower extension block (21). The outer wall of the inner bend (12) is tightly engaged with the inner wall of the outer bend (22). Limit blocks (40) are provided at both ends of the upper end surface of the lower extension block (21). The two limit blocks (40) on the lower extension block (21) are symmetrically arranged and tightly engaged with the two end surfaces of the upper extension block (11).

2. A high-voltage busbar insulation box according to claim 1, characterized in that: The upper box body (10) and the lower box body (20) are both n-type structures. The upper box body (10) and the lower box body (20) of the n-type structure are relatively combined together to form a structure with a transverse square through cavity. A vertical through hole (23) is provided at the center of the lower end surface of the lower box body (20), and the through hole (23) penetrates into the transverse square through cavity.

3. The high-voltage busbar insulation box according to claim 1, characterized in that: Both ends of the upper end surface of the lower extension block (21) are provided with limit block mounting holes. The limit block (40) is arranged obliquely, and its outer end is fixed on the inner wall of the limit block mounting hole, and its inner end is suspended above the lower extension block (21).

4. The high-voltage busbar insulation box according to claim 1, characterized in that: The upper extension block (11) and the lower extension block (21) are provided with overlapping mounting holes (30), a bolt (51) is movably inserted into the mounting hole (30), and a nut (52) is threadedly sleeved on the end of the bolt (51).

5. A high-voltage busbar insulation box according to claim 4, characterized in that: The mounting hole (30) is provided on the lower extension block (21) between the two limiting blocks (40).

6. A high-voltage busbar insulation box according to claim 4, characterized in that: At least two mounting holes (30) are provided.

7. The high-voltage busbar insulation box according to claim 4, characterized in that: The nut (52) is engaged between the inner curved portion (12) and the upper box body (10), and its two sides are respectively in contact with the inner wall of the inner curved portion (12) and the outer wall of the upper box body (10), so that the nut (52) can only move in the vertical direction relative to the upper box body (10) and cannot rotate.

8. The high-voltage busbar insulation box according to claim 1, characterized in that: A transverse protruding ridge is provided on the inner wall of the outer curved portion (22) of the lower box body (20), and the outer end surface of the transverse protruding ridge is fixedly fitted with the inner wall of the outer curved portion (22), and the inner end surface thereof is a sloped structure.

9. The high-voltage busbar insulation box according to claim 1, characterized in that: The upper box body (10) and the upper extension block (11), and the upper extension block (11) and the inner curved portion (12) are all integrally formed.

10. A method for assembling a high-voltage busbar insulation box, based on the high-voltage busbar insulation box according to any one of claims 1 to 9, characterized in that: The steps include: S1. Preparation of various components: prepare the upper box body (10) and the lower box body (20), and equip them with the corresponding number of accessories; S2. Assembly: by vertically pressing down or horizontally inserting, gradually press or insert the upper box body (10) into the lower box body (20), and make the outer wall of the inner curved portion (12) of the upper box body (10) and the inner wall of the outer curved portion (22) of the lower box body (20) tightly fit together, and make the two end surfaces of the upper extension block (11) and the inner end surfaces of the two limit blocks (40) tightly fit together; S3. Adjustment and locking: The relative positions of the upper box body (10) and the lower box body (20) are finely adjusted appropriately, and then the upper box body (10) and the lower box body (20) are fixed and locked by bolts to achieve assembly between the upper box body (10) and the lower box body (20), thereby completing the assembly process of the entire high-voltage busbar insulation box.

Images