A compact box-type substation

Abstract

The present application relates to a compact box-type substation, which relates to the technical field of box-type substations, comprising a box body and a box door arranged on the box body, wherein a transformer chamber and a transformer body located in the transformer chamber are arranged in the box body, and a plurality of conductive rods are fixedly arranged on the transformer body; an insulating sleeve is fixedly sleeved on the outer periphery of the conductive rod, an insulating protective sleeve is sleeved on the outer periphery of the insulating sleeve, an insulating extension sleeve is fixedly arranged on the outer periphery of the insulating protective sleeve, one end of the cable passes through the insulating extension sleeve, extends to the interior of the insulating protective sleeve and is electrically connected to the upper side of the conductive rod; due to the coordinated arrangement of the insulating sleeve, the insulating protective sleeve and the insulating extension sleeve in the present application, when the maintenance staff inspects the interior of the transformer, even if they accidentally touch the connection between the cable and the conductive rod, the above-mentioned multi-layer insulation arrangement can reduce the possibility of electric shock, thereby effectively improving the safety performance of the substation during maintenance.

Description

Technical Field

[0001] The present application relates to the technical field of box-type substations, and in particular to a compact box-type substation. Background Art

[0002] A box-type substation, also known as a prefabricated substation or prefabricated substation, is a factory-prefabricated indoor or outdoor compact distribution equipment that integrates high-voltage switchgear, distribution transformers and low-voltage distribution devices according to a certain wiring scheme.

[0003] In the related art, a compact substation includes a box body and its door. The interior of the box body is divided into several key areas, such as the high-voltage room, the low-voltage room, and the transformer room, each of which is equipped with corresponding electrical equipment. The low-voltage room mainly installs electrical equipment related to the low-voltage system, while the high-voltage room contains electrical equipment related to the high-voltage system. An oil-immersed transformer is usually installed in the transformer room. This type of transformer is connected to the electrical equipment in the external high-voltage and low-voltage rooms through high-voltage side conductive columns and low-voltage side conductive columns, where the high-voltage side conductive columns are directly connected to the electrical equipment in the high-voltage room through cables.

[0004] However, a significant technical issue is that the connections between the high-voltage chamber cables and the high-voltage side conductive columns are often exposed directly inside the transformer chamber, without any protective measures. Therefore, when inspecting or maintaining the substation, workers may accidentally touch these exposed connections, especially when the power is on. This contact is very likely to cause electric shock, posing a serious threat to the safety of workers and posing a potential safety hazard. Summary of the Invention

[0005] The purpose of this application is to provide a compact box-type substation to solve the problem in the above-mentioned related technologies that when repairing the box-type substation, the connection between the high-voltage room connecting cable and the high-voltage side conductive column may be accidentally touched, which may cause electric shock accidents and pose a safety hazard.

[0006] The present application provides a compact box-type substation adopting the following technical solutions:

[0007] A compact box-type substation includes a box body and a box door arranged on the box body. A transformer chamber and a transformer body located in the transformer chamber are provided in the box body. A plurality of conductive rods are fixedly provided on the transformer body. An insulating sleeve is fixedly provided on the outer periphery of the conductive rod, an insulating protective sleeve is provided on the outer periphery of the insulating sleeve, an insulating extension sleeve is fixedly provided on the outer periphery of the insulating protective sleeve, and one end of the cable passes through the insulating extension sleeve, extends to the interior of the insulating protective sleeve, and is electrically connected to the upper side of the conductive rod.

[0008] By adopting the above technical solution, when maintenance personnel are inspecting the inside of the transformer, even if they accidentally touch the connection between the cable and the conductive rod, the possibility of electric shock can be reduced due to the coordinated arrangement of the insulating sleeve, the insulating protective sleeve and the insulating extension sleeve, and the above multi-layer insulation arrangement, thereby effectively improving the safety performance during substation maintenance.

[0009] Optionally, an insulating cover is provided above the transformer body, and the insulating cover is threadedly mounted on a side opening of the insulating protective sleeve away from the transformer body.

[0010] By adopting the above technical solution, due to the installation setting of the insulating cover, after the cable is electrically connected and fixed to the conductive rod, the insulating cover can be installed at the upper opening of the insulating protective sleeve to seal the opening, thereby further enhancing the insulation effect and further improving the safety performance of the substation.

[0011] Optionally, a cleaning assembly is provided above the transformer body, and the cleaning assembly includes a cleaning ring sleeved on the outer periphery of the insulating extension sleeve and cleaning cotton arranged on the cleaning ring; one side of the cleaning cotton abuts against the outer periphery of the insulating extension sleeve, and the cleaning ring can slide along the length direction of the insulating extension sleeve.

[0012] By adopting the above technical solution, due to the provision of the cleaning ring and the cleaning cotton, the outer surface of the insulating extension sleeve can be cleaned, dust and impurities can be effectively removed, and the insulation performance can be ensured while also extending the service life of the equipment.

[0013] Optionally, the cleaning ring includes a first half ring and a second half ring that are plugged and fixed together. The first half ring is fixed with a positioning plug, and the second half ring is provided with a positioning slot for the positioning plug to be inserted into.

[0014] By adopting the above technical solution, due to the plug-in arrangement of the first half ring and the second half ring, the outer surface of the insulating extension sleeve can be cleaned, the cleaning ring can be easily disassembled and installed, and the disassembly and assembly efficiency of the cleaning ring is improved.

[0015] Optionally, a plurality of heat pipes are provided on the outer periphery of the insulating protective sleeve, and the ends of the heat pipes facing the transformer body are bent portions, and the bent portions are bent in a direction away from the outer periphery of the insulating protective sleeve.

[0016] By adopting the above technical solution, due to the arrangement of the heat pipe and the bent portion, the heat near the conductive rod can be conducted to an area away from the insulating protective sleeve, thereby achieving effective heat dissipation of the transformer body and improving the heat dissipation performance and operational stability of the substation.

[0017] Optionally, the heat pipe is slidably arranged on the outer periphery of the insulating protective sleeve, and the heat pipe can slide along the length direction of the insulating protective sleeve; a reset member for squeezing the bent portion toward the insulating cover is provided on the outer periphery of the insulating protective sleeve, and the cleaning ring can be fixedly sleeved on the outer periphery of the insulating cover, and the end of the heat pipe away from the bent portion abuts against the side of the cleaning ring facing the transformer body.

[0018] By adopting the above technical solution, the user can adjust the degree of rotation of the insulating cover thread installed on the upper end of the insulating protective sleeve, and then adjust the degree of squeezing of the cleaning ring on the upper end of the heat pipe. At this time, the reset part simultaneously presses the bent part of the heat pipe. With this setting, the user can adjust the installation height of the heat pipe on the insulating protective sleeve according to actual conditions, so that it has a better heat dissipation effect near the conductive rod on the transformer body.

[0019] Optionally, fixed plugs are fixed on the inner side surfaces of the first half ring and the second half ring, and a plurality of fixing slots for the fixed plugs to be embedded and fixed are provided on the outer periphery of the insulating cover, and the plurality of fixing slots are distributed along the axial direction of the insulating cover.

[0020] By adopting the above technical solution, due to the coordinated arrangement of the fixed plug and a plurality of fixed slots, during the installation process of the cleaning ring, the installation position of the cleaning ring on the outer periphery of the insulating cover can be adjusted, thereby enabling the installation height of the heat pipe to be adjusted more flexibly.

[0021] Optionally, a fixing clamp through which the heating pipe passes and slides is fixedly provided on the outer periphery of the insulating protective sleeve.

[0022] By adopting the above technical solution, due to the installation arrangement of the fixing clamp, the heat pipe can be effectively fixed and limited to prevent it from deflecting or falling off during the sliding process.

[0023] Optionally, the reset member includes a compression spring mounted on the outer periphery of the insulating protective sleeve, a support ring is fixed on the outer periphery of the insulating protective sleeve, and a retaining ring is provided on the sliding sleeve, the two ends of the compression spring are fixedly connected to the support ring and the retaining ring respectively, and the side of the retaining ring away from the support ring abuts against the bent portion of the heat pipe.

[0024] By adopting the above technical solution, due to the coordinated arrangement of the compression spring, the support ring and the retaining ring, the retaining ring can elastically squeeze the bent portion of the heat pipe under the compression of the compression spring, thereby reducing the possibility of the heat pipe being loosely installed on the outer periphery of the insulating protective sleeve, and achieving effective squeezing and resetting of the bent portion.

[0025] Optionally, an elastic pad is fixedly provided on the side of the retaining ring away from the supporting ring.

[0026] By adopting the above technical solution, due to the installation of the elastic pad on the retaining ring, the abutment effect between the retaining ring and the bent portion can be further enhanced, and it can also play a role of buffering and shock absorption to a certain extent.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. Due to the coordinated arrangement of the insulating sleeve, insulating protective sleeve, and insulating extension sleeve, when maintenance personnel are inspecting the interior of the transformer, even if they accidentally touch the connection between the cable and the conductive rod, the above-mentioned multi-layer insulation arrangement can reduce the possibility of electric shock, effectively improving the safety performance during substation maintenance.

[0029] 2. Due to the setting of the cleaning ring and cleaning cotton, the outer surface of the insulating extension sleeve can be cleaned, effectively removing dust and impurities, ensuring the insulation performance while extending the service life of the equipment.

[0030] 3. Due to the arrangement of the heat pipe and the bent portion, the heat near the conductive rod can be transferred to an area away from the insulating protective sleeve, thereby achieving effective heat dissipation of the transformer body and improving the heat dissipation performance and operational stability of the substation.

[0031] 4. During the installation of the cleaning ring, the installation position of the cleaning ring on the outer periphery of the insulating cover can be adjusted, thereby adjusting the degree of compression of the cleaning ring on the upper end of the heat pipe; that is, the user can adjust the installation height of the heat pipe on the insulating protective cover according to actual conditions, so that it has a better heat dissipation effect near the conductive rod on the transformer body. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0033] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the present application;

[0034] Figure 2 This is a schematic structural diagram of a transformer body according to embodiment 1 of the present application;

[0035] Figure 3 This is a partial cross-sectional structural diagram of the installation and cooperation of the insulating sleeve and the insulating protective sleeve embodied in Example 1 of the present application;

[0036] Figure 4 This is a schematic diagram of the exploded structure of the installation distribution of the insulating sleeve and the insulating protective sleeve in Example 1 of the present application;

[0037] Figure 5 This is a partial structural diagram of the installation and coordination of the cleaning component in Example 2 of the present application;

[0038] Figure 6 This is a schematic diagram of the exploded structure of the installation distribution of the cleaning components in Example 2 of the present application;

[0039] Figure 7 This is a partial cross-sectional structural diagram of the installation and coordination of the cleaning component in Example 2 of the present application;

[0040] Figure 8 This is a partial structural diagram of the heat pipe installation and coordination embodiment 2 of the present application;

[0041] Figure 9 This is a partial cross-sectional structural diagram of the installation and coordination of the reset member in Example 2 of the present application;

[0042] Figure 10 yes Figure 9 A partial enlarged schematic diagram of part A.

[0043] In the figure, 1. box body; 11. transformer chamber; 2. box door; 3. transformer body; 31. conductive rod; 4. insulating sleeve; 5. insulating protective sleeve; 51. insulating extension sleeve; 52. fixing clamp; 6. insulating cover; 61. fixing slot; 7. cleaning assembly; 71. cleaning ring; 711. first half ring; 7111. positioning plug; 7112. fixing plug; 712. second half ring; 7121. positioning slot; 72. cleaning cotton; 8. heat pipe; 81. bending part; 9. reset part; 91. compression spring; 92. support ring; 93. retaining ring; 94. elastic pad. DETAILED DESCRIPTION

[0044] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0045] Example 1:

[0046] Reference Figure 1 、 Figure 2 and Figure 3 A compact box-type substation includes a box body 1 and a box door 2 arranged on the box body 1. The box body 1 is provided with a low-voltage chamber (not shown in the figure), a high-voltage chamber (not shown in the figure) and a transformer chamber 11. A transformer body 3 is installed in the transformer chamber 11. Three conductive rods 31 are fixedly arranged on the transformer body 3. The electrical equipment in the high-voltage chamber 12 is electrically connected to the conductive rods 31 on the transformer through cables.

[0047] Reference Figure 3 and Figure 4An insulating sleeve 4 is fixedly installed on the outer periphery of the conductive rod 31, and an insulating protective sleeve 5 is provided on the outside of the insulating sleeve 4. An insulating extension sleeve 51 is fixedly formed on the outer periphery of the insulating protective sleeve 5. The insulating sleeve 4, the insulating protective sleeve 5 and the insulating extension sleeve 51 are all made of plastic. The connection between the insulating protective sleeve 5 and the insulating extension sleeve 51 is connected. Through the above-mentioned multi-layer insulation setting, the safety performance of the substation is effectively improved.

[0048] Reference Figure 3 and Figure 4 An insulating cover 6 is provided above the transformer body 3, and the staff can thread the insulating cover 6 onto the side opening of the insulating protective sleeve 5 away from the transformer body 3. By providing the insulating cover 6, the insulation effect can be further enhanced and the safety performance of the substation can be improved.

[0049] The implementation principle of the embodiment of this application is:

[0050] When the cable is electrically connected to the conductive rod 31, the insulating protective sleeve 5 is fixedly mounted on the outer periphery of the insulating sleeve 4 in advance, and then one end of the cable is passed through the insulating extension sleeve 51 in sequence and extended to the inside of the insulating protective sleeve 5. Then, the end of the cable is moved to the upper side of the conductive rod 31, and then the end of the cable is fixed to the upper side of the conductive rod 31 by tightening with screws. Finally, the insulating cover 6 is threadedly mounted on the upper opening of the insulating protective sleeve 5.

[0051] Example 2:

[0052] Reference Figure 5 and Figure 6 The difference between the embodiment of the present application and embodiment 1 is that a cleaning assembly 7 is provided above the transformer body 3, wherein the cleaning assembly 7 includes a cleaning ring 71 sleeved on the outer periphery of the insulating extension sleeve 51 and a cleaning cotton 72 fixed to one side of the cleaning ring 71 by glue, and the cleaning cotton 72 is a conventional sponge block; the overall outline of the cleaning cotton 72 is annular, and the inner diameter of the cleaning cotton 72 is smaller than the inner diameter of the cleaning ring 71.

[0053] After the cleaning ring 71 is installed and mounted on the outer circumference of the insulating extension sleeve 51, one side of the cleaning cotton 72 abuts against the outer circumference of the insulating extension sleeve 51. The cleaning ring 71 can slide along the length of the insulating extension sleeve 51 under the force applied by the operator. The arrangement of the cleaning ring 71 and the cleaning cotton 72 can clean the outer surface of the insulating extension sleeve 51, effectively removing dust and impurities, ensuring insulation performance while also extending the service life of the equipment.

[0054] Reference Figure 6 and Figure 7The cleaning ring 71 comprises a first half ring 711 and a second half ring 712, which are fixed together. Two positioning blocks 7111 are fixedly formed on the side of the first half ring 711 facing the second half ring 712. The second half ring 712 has a positioning slot 7121 for the positioning blocks 7111 to fit into. The cleaning cotton 72 is divided into two parts, which are fixed to the first half ring 711 and the second half ring 712 respectively. This plug-in fixing method allows for convenient removal and installation of the cleaning ring 71.

[0055] Reference Figure 8 Three heat pipes 8 are provided on the outer circumference of the insulating protective sheath 5. These heat pipes 8 are conventional heat dissipation structures and will not be described in detail here. The ends of these heat pipes 8 facing the transformer body 3 have bent portions 81, which bend away from the outer circumference of the insulating protective sheath 5. The provision of heat pipes 8 and the design of their bent portions 81 effectively dissipate heat from the transformer body 3, improving the heat dissipation performance and operational stability of the substation.

[0056] Reference Figure 8 The heat pipe 8 is slidably mounted on the outer periphery of the insulating protective sleeve 5 and can slide along the length of the insulating protective sleeve 5. A plurality of fixing clamps 52 are fixed to the outer periphery of the insulating protective sleeve 5, through which the heat pipe 8 slides. The fixing clamps 52 effectively secure and limit the heat pipe 8, preventing it from shifting or falling off during sliding.

[0057] Reference Figure 8 and Figure 9 The outer circumference of the insulating protective sleeve 5 is also provided with a reset member 9 for compressing the bent portion 81 toward the insulating cover 6. This reset member 9 comprises a compression spring 91 sleeved around the outer circumference of the insulating protective sleeve 5. A support ring 92 is fixedly mounted on the outer circumference of the insulating protective sleeve 5, and a retaining ring 93 is provided on the sliding sleeve. The ends of the compression spring 91 are fixedly connected to the support ring 92 and retaining ring 93, respectively. The side of the retaining ring 93 facing away from the support ring 92 abuts against the bent portion 81 of the heat pipe 8. The elastic action of the compression spring 91 effectively compresses and resets the bent portion 81.

[0058] Reference Figure 8 and Figure 9 On the side of the retaining ring 93 away from the supporting ring 92, a rubber elastic pad 94 is fixed by glue. By providing the elastic pad 94, the abutment effect between the retaining ring 93 and the bending portion 81 can be further enhanced, and it can also play a role of buffering and shock absorption to a certain extent.

[0059] Reference Figure 9 and Figure 10The cleaning ring 71 can be fixedly mounted on the outer circumference of the insulating cover 6, and the end of the heat pipe 8 away from the bent portion 81 abuts against the side of the cleaning ring 71 facing the transformer body 3. The user can adjust the installation height of the heat pipe 8 by rotating the insulating cover 6 to adjust the pressure of the cleaning ring 71 on the upper end of the heat pipe 8, while the reset member 9 presses the bent portion 81 of the heat pipe 8.

[0060] Reference Figure 9 and Figure 10 , fixed plugs 7112 are fixed on the inner side surfaces of the first half ring 711 and the second half ring 712. Three fixing slots 61 are provided on the outer periphery of the insulating cover 6 for the fixing plugs 7112 to be inserted and fixed. The three fixing slots 61 are distributed along the axial direction of the insulating cover 6. After the cleaning ring 71 is installed on the insulating cover 6, the inner side surface of the cleaning ring 71 abuts against the outer periphery of the insulating cover 6, and the cleaning cotton 72 is squeezed (compressed) so that its inner side wall abuts against the outer periphery of the insulating cover 6; this design allows the installation position of the cleaning ring 71 on the outer periphery of the insulating cover 6 to be adjusted, thereby enabling more flexible adjustment of the installation height of the heat pipe 8.

[0061] The implementation principle of the embodiment of this application is:

[0062] When it is necessary to clean the outer periphery of the insulating extension sleeve 51, the cleaning ring 71 can be removed from the outer periphery of the insulating cover 6 and placed on the outer periphery of the insulating extension sleeve 51. The staff then applies force to the cleaning ring 71 to make the cleaning ring 71 and the cleaning cotton 72 slide along the length direction of the insulating extension sleeve 51 and clean its outer periphery.

[0063] When limiting the installation of the heat pipe 8, the cleaning ring 71 is fixed to the corresponding position on the insulating cover 6, and then the insulating cover 6 is threadedly sleeved on the upper end of the insulating protective cover 5. Finally, the cleaning cotton 72 on the cleaning ring 71 is pressed against the upper end of the heat pipe 8, and the elastic pad 94 on the retaining ring is pressed against the bent portion 81 of the heat pipe 8.

[0064] When the installation height of the heat pipe needs to be adjusted, the cleaning ring is fixed at different positions of the insulating cover along its own axis, so that the cleaning cotton on the cleaning ring presses the heat pipe to different degrees, thereby adjusting the installation position of the heat pipe.

[0065] Unless otherwise defined, the terms or scientific terms used in this application should have the usual meanings understood by people with ordinary skills in the field to which this application belongs. The "first", "second", "third" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "A" or "one" and other similar words do not indicate a quantity limit, but rather indicate the existence of at least one. "Include" or "comprising" and other similar words mean that the elements or objects appearing before "include" or "comprising" cover the elements or objects listed after "include" or "comprising" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0066] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A compact box-type substation, comprising a box body (1) and a box door (2) arranged on the box body (1); a transformer chamber (11) and a transformer body (3) located in the transformer chamber (11); and a plurality of conductive rods (31) fixedly arranged on the transformer body (3); It is characterized by: An insulating sleeve (4) is fixedly sleeved on the outer periphery of the conductive rod (31), an insulating protective sleeve (5) is sleeved on the outer periphery of the insulating sleeve (4), an insulating extension sleeve (51) is fixedly provided on the outer periphery of the insulating protective sleeve (5), one end of the cable passes through the insulating extension sleeve (51), extends to the interior of the insulating protective sleeve (5), and is electrically connected to the upper side of the conductive rod (31); A cleaning assembly (7) is provided above the transformer body (3), the cleaning assembly (7) comprising a cleaning ring (71) sleeved on the outer periphery of the insulating extension sleeve (51) and cleaning cotton (72) provided on the cleaning ring (71); one side of the cleaning cotton (72) abuts against the outer periphery of the insulating extension sleeve (51), and the cleaning ring (71) is capable of sliding along the length direction of the insulating extension sleeve (51); The cleaning ring (71) comprises a first half ring (711) and a second half ring (712) that are plugged and fixed together. A positioning plug (7111) is fixed on the first half ring (711), and a positioning slot (7121) is provided on the second half ring (712) for the positioning plug (7111) to be inserted. A plurality of heat pipes (8) are provided on the outer periphery of the insulating protective sleeve (5); the ends of the heat pipes (8) facing the transformer body (3) are bent portions (81), and the bent portions (81) are bent in a direction away from the outer periphery of the insulating protective sleeve (5); the heat pipes (8) are slidably provided on the outer periphery of the insulating protective sleeve (5), and the heat pipes (8) are capable of sliding along the length direction of the insulating protective sleeve (5); A reset member (9) for pressing the bent portion (81) toward the insulating cover (6) is provided on the outer periphery of the insulating protective sleeve (5); the cleaning ring (71) can be fixedly sleeved on the outer periphery of the insulating cover (6); and the end of the heat pipe (8) away from the bent portion (81) abuts against the side of the cleaning ring (71) facing the transformer body (3); A fixed plug (7112) is fixedly provided on the inner side surfaces of the first half ring (711) and the second half ring (712), and a plurality of fixed slots (61) for the fixed plug (7112) to be embedded and fixed are provided on the outer periphery of the insulating cover (6), and the plurality of fixed slots (61) are distributed along the axial direction of the insulating cover (6); An insulating cover (6) is provided above the transformer body (3), and the insulating cover (6) is threadedly mounted on a side opening of the insulating protective sleeve (5) away from the transformer body (3); a fixed clamp (52) is fixed on the outer periphery of the insulating protective sleeve (5) through which the heating pipe (8) passes and slides; The reset member (9) comprises a compression spring (91) sleeved on the outer periphery of the insulating protective sleeve (5); a support ring (92) is fixedly provided on the outer periphery of the insulating protective sleeve (5); and a retaining ring (93) is provided on the sliding sleeve; the two ends of the compression spring (91) are respectively fixedly connected to the support ring (92) and the retaining ring (93); the side of the retaining ring (93) away from the support ring (92) abuts against the bent portion (81) of the heat pipe (8); and an elastic pad (94) is fixedly provided on the side of the retaining ring (93) away from the support ring (92).

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