A composite structure for fixing a high-voltage wall bushing on a firewall

Abstract

The present invention discloses a composite structure for fixing a high-voltage through-wall bushing on a firewall, which includes a firewall main body. A reserved installation hole is provided on the firewall main body, and a composite board assembly is arranged in the reserved installation hole; the composite board assembly includes a steel plate and two fireproof boards. A high-voltage through-wall bushing is fixedly connected to the middle of the steel plate. A connecting component is arranged on the outer side wall of the steel plate, and the steel plate is fixedly connected to the reserved installation hole through the connecting component; the fireproof boards are adapted to the reserved installation hole, and the two fireproof boards are respectively attached to both sides of the steel plate and are limitedly connected through a splicing component. The side of the fireproof board close to the steel plate is arranged corresponding to the connecting component, and a sealing component is arranged on the side of the fireproof board far from the steel plate, and the sealing component is arranged corresponding to the inner side wall of the reserved installation hole. The structure of the present invention is simple and the installation is convenient, which meets the installation requirements of high-voltage through-wall bushings with different voltage levels and also meets the fireproof requirements, improves the overall construction efficiency, and meets the requirements of safe, reliable and convenient installation during the construction process.

Description

Technical Field

[0001] The present invention relates to the technical field of substation firewalls, and particularly to a composite structure for fixing high-voltage wall bushings on a firewall. Background Art

[0002] According to the requirements of the current national fire protection design code, the distribution device rooms of 10 kV and 35 kV in a substation are separated by a 3-hour firewall from the main transformer room. If the electrical equipment of the two is connected by a high-voltage wall bushing busbar, the wall bushing is generally preferably fixed on a steel plate with a thickness of 8 - 20 mm, and the hole diameter should be more than 5 mm larger than the embedded part of the bushing; it can also be fixed on a concrete slab, but the thickness of the slab shall not exceed 50 mm, and the flange shall not be buried in the concrete or plaster layer. At present, the wall bushings are basically fixed with steel plates, but the steel plates have weak fire protection and heat insulation properties. The strength of the steel plates decreases rapidly at high temperatures, and the thermal conductivity is large. The exposed steel plates under the high temperature of a fire often lose their load-bearing capacity in about 15 minutes and collapse, unable to meet the requirement of a 3-hour fire resistance limit. Therefore, it is usually achieved by applying a non-expansive fireproof coating for protection. According to the requirements of the national standard GB14907 - 2018, the construction thickness of the thick-coated non-expansive fireproof coating should be greater than 15 mm. Generally, the construction thickness of the thick-coated steel structure fireproof coating with a fire resistance of 3 hours is between 25 - 30 mm. The non-expansive fireproof coating is applied on both sides of the fixed steel plate, and the total thickness of the steel plate plus the coating far exceeds 50 mm. At the same time, the non-expansive fireproof coating has relatively large coating particles, the coating appearance is uneven, the surface appearance is poor, and the coating strength is low, so it cannot meet the electrical installation requirements of the high-voltage wall bushing.

[0003] Therefore, there is an urgent need for a composite structure for fixing high-voltage wall bushings on a firewall to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a composite structure for fixing high-voltage wall bushings on a firewall to solve the problems existing in the above prior art.

[0005] To achieve the above object, the present invention provides the following solutions: The present invention provides a composite structure for fixing a high-voltage through-wall bushing on a firewall, including a firewall main body, a reserved installation hole is opened on the firewall main body, and a composite board assembly is arranged in the reserved installation hole; the composite board assembly includes a steel plate and two fireproof boards, a high-voltage through-wall bushing is fixedly connected to the middle of the steel plate, a connecting component is arranged on the outer side wall of the steel plate, and the steel plate is fixedly connected to the reserved installation hole through the connecting component; the fireproof boards are adapted to the reserved installation hole, the two fireproof boards are respectively attached to both sides of the steel plate, and are limited and connected through a splicing component, one side of the fireproof board close to the steel plate is correspondingly arranged with the connecting component, and a sealing component is arranged on the side of the fireproof board far from the steel plate, and the sealing component is correspondingly arranged with the inner side wall of the reserved installation hole.

[0006] Preferably, the connecting component includes a connecting frame fixedly connected to the outer side wall of the steel plate, a plurality of through holes are equidistantly arranged along the circumferential direction on the outer side wall of the connecting frame, a plurality of first threaded pipes are fixedly connected in the through holes, a plurality of reserved grooves are equidistantly arranged along the circumferential direction on the inner side wall of the reserved installation hole, a plurality of second threaded pipes are fixedly connected in the reserved grooves, the first threaded pipes and the second threaded pipes are correspondingly arranged, one end of the connecting frame is an open structure, a connecting bolt is arranged in the connecting frame, and the first threaded pipe and the second threaded pipe are respectively threadedly connected to the connecting bolt.

[0007] Preferably, a clamping groove is arranged along the circumferential direction on one side of the fireproof board close to the steel plate, the shape of the clamping groove is adapted to the structure formed by the steel plate and the connecting frame, a plurality of arc-shaped grooves are equidistantly arranged along the circumferential direction at one end of the clamping groove close to the reserved installation hole, and the two opposite arc-shaped grooves on the two fireproof boards are spliced into a cylindrical structure, and the first threaded pipe and the second threaded pipe are located in the cylindrical structure.

[0008] Preferably, a plurality of grooves are equidistantly arranged along the circumferential direction on one side of the fireproof board close to the steel plate, the splicing component includes a connecting block fixedly connected in the groove, a connecting groove is opened in the connecting block, a threaded rod is threadedly connected in the connecting groove, a first connecting pipe and a second connecting pipe are respectively fixedly connected to the two threaded rods on the two fireproof boards, a plurality of connecting holes are equidistantly arranged along the circumferential direction on the steel plate, the first connecting pipe and the second connecting pipe respectively extend into the connecting holes and are limited and connected through a splicing piece, a positioning groove is opened on the connecting block, a positioning ring is fixedly connected to the threaded rod, the positioning groove and the positioning ring are adapted to each other, and a plurality of positioning pieces are equidistantly arranged along the circumferential direction in the connecting block, and the positioning pieces are correspondingly arranged with the positioning ring.

[0009] Preferably, a cavity is formed in the connecting block. The positioning member includes a positioning rod slidably connected in the cavity. A plurality of positioning holes are equidistantly arranged along the circumferential direction on one side of the positioning ring close to the positioning groove. One end of the positioning rod extends out of the connecting block and is adapted to the positioning holes. The other end of the positioning rod is fixedly connected with a buckle. An annular clamping block is fixedly connected in the cavity. The buckle is arranged corresponding to the annular clamping block. A plurality of round holes are equidistantly arranged along the circumferential direction in the connecting groove. A push rod is slidably connected in the round hole. One end of the push rod is arranged corresponding to the threaded rod. The other end of the push rod extends into the cavity and is fixedly connected with one end of a push block. The other end of the push block is arranged corresponding to the buckle.

[0010] Preferably, the splicing member includes a plurality of splicing rods. One end of each splicing rod is hinged on the inner wall of the second connecting pipe. The other end of each splicing rod is fixedly connected with a splicing block. A plurality of splicing holes are formed in the inner side wall of the first connecting pipe. The splicing block extends out of the second connecting pipe and is adapted to the splicing holes. A first ejector rod is slidably connected to one end of the second connecting pipe close to the first connecting pipe. One end of the first ejector rod is arranged corresponding to the inner wall of the first connecting pipe. The other end of the first ejector rod extends into the second connecting pipe, and one end of a plurality of second ejector rods is hinged along the circumferential direction. The other end of the second ejector rod is arranged corresponding to the splicing rod.

[0011] Preferably, the sealing assembly includes a sealing frame. An annular sealing block is fixedly connected to one side of the sealing frame close to the fireproof board. There is a gap between the fireproof board and the reserved installation hole. The annular sealing block is adapted to the gap. The side of the fireproof board away from the steel plate abuts against the sealing frame respectively.

[0012] Preferably, a spring is sleeved on the positioning rod. Two ends of the spring are respectively fixedly connected with the inner wall of the cavity and the side wall of the positioning rod.

[0013] Preferably, a first torsion spring and a second torsion spring are respectively arranged between the splicing rod and the inner wall of the second connecting pipe and between the second ejector rod and the first ejector rod. Two ends of the first torsion spring are respectively fixedly connected with the splicing rod and the inner wall of the second connecting pipe. Two ends of the second torsion spring are respectively fixedly connected with the second ejector rod and the first ejector rod.

[0014] Preferably, expandable fireproof putty is arranged in both the cylindrical structure and the gap.

[0015] The present invention discloses the following technical effects:

[0016] A composite structure for fixing a high-voltage wall bushing on a firewall provided by the present invention. The steel plate is installed in a reserved installation hole in the firewall main body through a connection component, ensuring the convenient installation of the steel plate. After installation, fireproof boards are installed on both sides of the steel plate, and the two fireproof boards are spliced on both sides of the steel plate through a splicing component, realizing the fireproof treatment of the steel plate and at the same time being able to seal the connection component, ensuring the overall coating of the steel plate and the connection component, reducing the influence of fire, and the splicing component ensures the convenient and accurate installation of prefabricated plates such as fireproof boards, improving the overall construction efficiency. The gap between the firewall main body and the fireproof board is further sealed through the provided sealing component, preventing fire from entering through the gap and affecting the internal steel plate. The structure of this application is simple and the installation is convenient, meeting the installation requirements of high-voltage wall bushings with different voltage levels and at the same time meeting the fireproof requirements, improving the overall construction efficiency, suitable for batch production and installation, and meeting the requirements of electrical installation safety, reliability and convenience during the modular construction of an assembled substation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is Figure 1 a partial enlarged view of part A in

[0020] Figure 3 It is Figure 1 a partial enlarged view of part B in

[0021] Figure 4 It is Figure 1 a partial enlarged view of part C in

[0022] Figure 5 It is a schematic diagram of an arc-shaped groove structure;

[0023] Figure 6 It is a schematic diagram of the installation completion state;

[0024] Among them, 1 is the firewall main body; 2 is the reserved installation hole; 3 is the steel plate; 4 is the fireproof board; 5 is the high-voltage through-wall bushing; 6 is the connecting frame; 7 is the through hole; 8 is the first threaded pipe; 9 is the reserved groove; 10 is the second threaded pipe; 11 is the connecting bolt; 12 is the arc-shaped groove; 13 is the connecting block; 14 is the connecting groove; 15 is the threaded rod; 16 is the first connecting pipe; 17 is the second connecting pipe; 18 is the connecting hole; 19 is the positioning groove; 20 is the positioning ring; 21 is the positioning rod; 22 is the positioning hole; 23 is the buckle; 24 is the annular clamping block; 25 is the push rod; 26 is the push block; 27 is the splicing rod; 28 is the splicing block; 29 is the splicing hole; 30 is the first ejector rod; 31 is the second ejector rod; 32 is the sealing frame; 33 is the spring; 34 is the first torsion spring; 35 is the second torsion spring; 36 is the annular sealing block. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the drawings and specific implementation manners.

[0027] Refer to Figures 1-6 , the present invention provides a composite structure for fixing a high-voltage through-wall bushing on a firewall, including a firewall main body 1. A reserved installation hole 2 is opened on the firewall main body 1, and a composite board assembly is arranged in the reserved installation hole 2; the composite board assembly includes a steel plate 3 and two fireproof boards 4. A high-voltage through-wall bushing 5 is fixedly connected to the middle of the steel plate 3. A connecting component is arranged on the outer side wall of the steel plate 3, and the steel plate 3 is fixedly connected to the reserved installation hole 2 through the connecting component; the fireproof board 4 is adapted to the reserved installation hole 2. The two fireproof boards 4 are respectively attached to both sides of the steel plate 3 and are limited and connected through a splicing component. One side of the fireproof board 4 close to the steel plate 3 is arranged corresponding to the connecting component, and a sealing component is arranged on the side of the fireproof board 4 away from the steel plate 3. The sealing component is arranged corresponding to the inner side wall of the reserved installation hole 2.

[0028] For a further optimized solution, the connecting component includes a connecting frame 6 fixedly connected to the outer side wall of the steel plate 3. A number of through holes 7 are evenly arranged at equal intervals along the circumferential direction on the outer side wall of the connecting frame 6. A number of first threaded pipes 8 are fixedly connected in the through holes 7. A number of reserved slots 9 are evenly arranged at equal intervals along the circumferential direction on the inner side wall of the reserved installation hole 2. A number of second threaded pipes 10 are fixedly connected in the reserved slots 9. The first threaded pipes 8 and the second threaded pipes 10 are arranged correspondingly. One end of the connecting frame 6 is an open structure. A connecting bolt 11 is arranged in the connecting frame 6. The first threaded pipes 8 and the second threaded pipes 10 are respectively threadedly connected to the connecting bolt 11.

[0029] By corresponding the first threaded pipes 8 and the second threaded pipes 10 one by one and threadedly connecting the connecting bolt 11 into the first threaded pipes 8 and the second threaded pipes 10 in sequence, the installation of the steel plate 3 in the reserved installation hole 2 is realized, ensuring the convenience of installation and the stability after installation. And later, when the fireproof board 4 is spliced, it extends between the adjacent first threaded pipes 8 and second threaded pipes 10 to realize the overall covering of the six sides of the steel plate 3, reducing the probability of flame entry and ensuring the overall fireproof effect.

[0030] For a further optimized solution, a clamping groove is arranged along the circumferential direction on the side of the fireproof board 4 close to the steel plate 3. The shape of the clamping groove is adapted to the structure composed of the steel plate 3 and the connecting frame 6. A number of arc-shaped grooves 12 are evenly arranged at equal intervals along the circumferential direction at one end of the clamping groove close to the reserved installation hole 2. The two opposite arc-shaped grooves 12 on the two fireproof boards 4 are spliced into a cylindrical structure. The first threaded pipes 8 and the second threaded pipes 10 are located inside the cylindrical structure.

[0031] The two fireproof boards 4 are spliced on both sides of the steel plate 3. When splicing, the two arc-shaped grooves 12 correspond, and the first threaded pipes 8 and the second threaded pipes 10 are covered in the cylindrical structure composed of the arc-shaped grooves 12, realizing the fireproof sealing of the first threaded pipes 8 and the second threaded pipes 10. At the same time, the clamping groove is buckled on the structure composed of the steel plate 3 and the connecting frame 6, further realizing the comprehensive sealing and covering of the connecting frame 6, the steel plate 3, the first threaded pipes 8 and the second threaded pipes 10, avoiding the influence of flame entry on the connecting frame 6, the steel plate 3, the first threaded pipes 8 and the second threaded pipes 10 made of metal materials, and ensuring the overall fireproof effect.

[0032] A further optimized solution is provided, on one side of the fireproof panel 4 close to the steel plate 3, a plurality of grooves are provided at equal intervals along the circumferential direction, and the splicing assembly includes a connecting block 13 fixed in the groove, a connecting groove 14 is provided in the connecting block 13, a threaded rod 15 is threadedly connected to the connecting groove 14, a first connecting pipe 16 and a second connecting pipe 17 are respectively fixed to the two threaded rods 15 on the two fireproof panels 4, a plurality of connecting holes 18 are provided at equal intervals along the circumferential direction on the steel plate 3, the first connecting pipe 16 and the second connecting pipe 17 are respectively extended into the connecting holes 18 and are connected by means of splicing parts, a positioning groove 19 is provided on the connecting block 13, a positioning ring 20 is fixed to the threaded rod 15, the positioning groove 19 and the positioning ring 20 are matched, a plurality of positioning members are provided at equal intervals along the circumferential direction in the connecting block 13, and the positioning members and the positioning ring 20 are provided correspondingly.

[0033] The fireproof board 4 is a prefabricated board, and the threaded rod 15 and the splicing parts are prefabricated parts. The two are installed on site, which ensures convenient installation on site while facilitating production and transportation. At the same time, the threaded rod 15 on the fireproof board 4 is accurately positioned by the positioning parts during installation, which ensures the accurate positioning of the two fireproof boards 4 when they are connected through the splicing parts in the later stage. During batch construction, there is no need to classify and transport the boards. The splicing can be completed by randomly selecting two fireproof boards 4, which ensures the overall installation efficiency.

[0034] A further optimized solution is provided, in which a cavity is provided in the connecting block 13, and the positioning member includes a positioning rod 21 slidably connected in the cavity, and a plurality of positioning holes 22 are provided at equal intervals along the circumferential direction on the side of the positioning ring 20 close to the positioning groove 19, and one end of the positioning rod 21 extends out of the connecting block 13 and is adapted to the positioning hole 22, and a buckle 23 is fixedly connected to the other end of the positioning rod 21, and an annular clamping block 24 is fixedly connected in the cavity, and the buckle 23 and the annular clamping block 24 are arranged correspondingly, and a plurality of circular holes are provided at equal intervals along the circumferential direction in the connecting groove 14, and a push rod 25 is slidably connected in the circular hole, and one end of the push rod 25 is arranged correspondingly to the threaded rod 15, and the other end of the push rod 25 extends into the cavity and is fixedly connected to one end of a push block 26, and the other end of the push block 26 is arranged correspondingly to the buckle 23.

[0035] The buckle 23 is a metal elastic buckle, which is clamped on the annular block 24. When the threaded rod 15 is threadedly connected to the connecting groove 14, the bottom end of the threaded rod 15 gradually pushes the push rod 25, and the push rod 25 pushes the push block 26 to separate the buckle 23 from the annular block 24. After separation, the positioning rod 21 extends out of the cavity, and at this time the positioning ring 20 is located in the positioning groove 19. When the positioning hole 22 corresponds to the positioning rod 21, the positioning rod 21 is clamped in the positioning hole 22, which limits the rotation of the threaded rod 15. At the same time, it ensures that the angles of the two corresponding threaded rods 15 on the two fireproof panels 4 after installation are consistent, which ensures accurate positioning during splicing through splicing parts in the later stage, which is convenient for installation.

[0036] For a further optimized solution, the splicing member includes a plurality of splicing rods 27. One end of each splicing rod 27 is hinged to the inner wall of the second connecting pipe 17, and a splicing block 28 is fixedly connected to the other end of the splicing rod 27. A plurality of splicing holes 29 are formed in the inner side wall of the first connecting pipe 16. The splicing block 28 extends out of the second connecting pipe 17 and is adapted to the splicing holes 29. A first ejector rod 30 is slidably connected to one end of the second connecting pipe 17 close to the first connecting pipe 16. One end of the first ejector rod 30 is arranged corresponding to the inner wall of the first connecting pipe 16, and the other end of the first ejector rod 30 extends into the second connecting pipe 17, and one ends of a plurality of second ejector rods 31 are hinged along the circumferential direction. The other ends of the second ejector rods 31 are arranged corresponding to the splicing rods 27.

[0037] After the two threaded rods 15 are accurately positioned, by pushing the fireproof boards 4 into the two sides of the steel plate 3 respectively, both the first connecting pipe 16 and the second connecting pipe 17 are square pipes. On the premise of their accurate positioning, the second connecting pipe 17 extends into the first connecting pipe 16. At the same time, the first ejector rod 30 contacts the inner wall of the first connecting pipe 16 and is extruded into the second connecting pipe 17. The second ejector rods 31 are in sliding contact with the splicing rods 27, driving the splicing blocks 28 to extend into the splicing holes 29 to realize the clamping connection between the first connecting pipe 16 and the second connecting pipe 17, so as to realize the installation of the two fireproof boards 4 on the two sides of the steel plate 3. The installation is convenient and the construction efficiency is guaranteed.

[0038] For a further optimized solution, the sealing assembly includes a sealing frame 32. An annular sealing block 36 is fixedly connected to one side of the sealing frame 32 close to the fireproof board 4. There is a gap between the fireproof board 4 and the reserved installation hole 2. The annular sealing block 36 is adapted to the gap. The side of the fireproof board 4 away from the steel plate 3 abuts against the sealing frame 32 respectively.

[0039] After the fireproof board 4 is installed, there is a certain gap between it and the reserved installation hole 2. The gap is sealed by buckling the annular sealing block 36, so as to prevent the flame from entering through the gap and affecting the internal steel plate 3. Specifically, a plurality of arc-shaped grooves 12 are also formed on one side of the annular sealing block 36 close to the steel plate 3 to realize the buckling and sealing of the second threaded pipe 10.

[0040] For a further optimized solution, a spring 33 is sleeved on the positioning rod 21. Both ends of the spring 33 are fixedly connected to the inner wall of the cavity and the side wall of the positioning rod 21 respectively.

[0041] Under the acting force applied by the spring 33, when the buckle 23 is separated from the annular clamping block 24, the positioning rod 21 extends out of the connecting block 13 under the acting force of the spring 33 and extends into the positioning hole 22, realizing the precise positioning of the two threaded rods 15, ensuring the precise positioning during the subsequent connection of the first connecting pipe 16 and the second connecting pipe 17, and thus ensuring their stable connection. In addition, the spring 33 also endows the positioning rod 21 with a certain telescopic function. When there is a certain deviation between the positioning hole 22 and the positioning rod 21 when the buckle 23 is disengaged, the spring 33 ensures that the positioning rod 21 contracts in the cavity, and by slightly rotating the positioning ring 20, the positioning hole 22 is aligned with the positioning rod 21, enabling it to be clamped in the positioning hole 22.

[0042] In a further optimized solution, a first torsion spring 34 and a second torsion spring 35 are respectively arranged between the splicing rod 27 and the inner wall of the second connecting pipe 17 and between the second ejector rod 31 and the first ejector rod 30. The two ends of the first torsion spring 34 are fixedly connected to the splicing rod 27 and the inner wall of the second connecting pipe 17 respectively, and the two ends of the second torsion spring 35 are fixedly connected to the second ejector rod 31 and the first ejector rod 30 respectively.

[0043] The first torsion spring 34 ensures that when in the non-spliced state, the splicing rod 27 is in an inclined and contracted state and contracts into the second connecting pipe 17. The second torsion spring 35 ensures that when the second ejector rod 31 contacts the splicing rod 27, it applies a pressure to drive the splicing rod 27 to rotate. When the splicing rod 27 rotates, it drives the splicing block 28 to extend out of the second connecting pipe 17 and at the same time makes the splicing block 28 slide in contact with the inner wall of the first connecting pipe 16 during the splicing process. When the fireproof board 4 abuts against the steel plate 3, the splicing block 28 is aligned with the splicing hole 29 and is clamped in the splicing hole 29, realizing the portable installation of the two fireproof boards 4.

[0044] In a further optimized solution, expandable fireproof putty is provided in both the cylindrical structure and the gap.

[0045] The gap is filled with expandable fireproof putty and the annular sealing block is bonded in the gap, and the sealing frame 32 is bonded to the firewall main body 1 and the fireproof board 4 to seal the gap and prevent flames from entering the gap. Further, before splicing the cylindrical structure, expandable fireproof putty is respectively injected into the two arc-shaped grooves 12. After splicing, the space between the first threaded pipe 8, the second threaded pipe 10 and the cylindrical structure is filled with expandable fireproof putty, ensuring the fireproof effect and preventing flames from entering the gap and affecting the steel plate 3 and the connecting frame 6.

[0046] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0047] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A composite structure for fixing a high-voltage wall bushing on a firewall, comprising a firewall main body (1), and a reserved installation hole (2) is formed on the firewall main body (1). Characterized in that: A composite board assembly is arranged in the reserved installation hole (2); the composite board assembly includes a steel plate (3) and two fireproof boards (4), a high-voltage wall bushing (5) is fixedly connected to the middle of the steel plate (3), a connecting component is arranged on the outer side wall of the steel plate (3), and the steel plate (3) is fixedly connected to the reserved installation hole (2) through the connecting component; the fireproof board (4) is adapted to the reserved installation hole (2), the two fireproof boards (4) are respectively attached to both sides of the steel plate (3), and are limited and connected through a splicing component, one side of the fireproof board (4) close to the steel plate (3) is correspondingly arranged with the connecting component, and a sealing component is arranged on the side of the fireproof board (4) far from the steel plate (3), and the sealing component is correspondingly arranged with the inner side wall of the reserved installation hole (2); A plurality of grooves are formed in the side of the fireproof board (4) close to the steel plate (3) at equal intervals in the circumferential direction. The splicing component includes a connecting block (13) fixedly connected in the groove, a connecting groove (14) is formed in the connecting block (13), a threaded rod (15) is threadedly connected in the connecting groove (14), a first connecting pipe (16) and a second connecting pipe (17) are respectively fixedly connected to the two threaded rods (15) on the two fireproof boards (4), a plurality of connecting holes (18) are formed in the steel plate (3) at equal intervals in the circumferential direction, the first connecting pipe (16) and the second connecting pipe (17) respectively extend into the connecting holes (18) and are limited and connected through a splicing part, a positioning groove (19) is formed in the connecting block (13), a positioning ring (20) is fixedly connected to the threaded rod (15), the positioning groove (19) is adapted to the positioning ring (20), and a plurality of positioning parts are arranged in the connecting block (13) at equal intervals in the circumferential direction, and the positioning parts are correspondingly arranged with the positioning ring (20); The sealing component includes a sealing frame (32), an annular sealing block (36) is fixedly connected to the side of the sealing frame (32) close to the fireproof board (4), a gap is arranged between the fireproof board (4) and the reserved installation hole (2), the annular sealing block (36) is adapted to the gap, and the side of the fireproof board (4) far from the steel plate (3) is respectively abutted against the sealing frame (32).

2. The composite structure for fixing a high-voltage wall bushing on a firewall according to claim 1, Characterized in that: The connecting component includes a connecting frame (6) fixedly connected to the outer side wall of the steel plate (3). A plurality of through holes (7) are equidistantly arranged along the circumference on the outer side wall of the connecting frame (6). A plurality of first threaded pipes (8) are fixedly connected in the through holes (7). A plurality of reserved grooves (9) are equidistantly arranged along the circumference on the inner side wall of the reserved installation hole (2). A plurality of second threaded pipes (10) are fixedly connected in the reserved grooves (9). The first threaded pipes (8) and the second threaded pipes (10) are arranged in correspondence. One end of the connecting frame (6) is an open structure. A connecting bolt (11) is arranged in the connecting frame (6). The first threaded pipes (8) and the second threaded pipes (10) are respectively threadedly connected to the connecting bolt (11).

3. The composite structure for fixing a high-voltage wall bushing on a firewall according to claim 2, wherein: On one side of the fireproof board (4) close to the steel plate (3), a clamping groove is arranged along the circumference. The shape of the clamping groove is adapted to the structure formed by the steel plate (3) and the connecting frame (6). A plurality of arc-shaped grooves (12) are equidistantly arranged along the circumference at one end of the clamping groove close to the reserved installation hole (2). The two arc-shaped grooves (12) on the two opposite fireproof boards (4) are spliced into a cylindrical structure. The first threaded pipes (8) and the second threaded pipes (10) are located in the cylindrical structure.

4. The composite structure for fixing a high-voltage wall bushing on a firewall according to claim 1, wherein: A cavity is formed in the connecting block (13). The positioning member includes a positioning rod (21) slidably connected in the cavity. A plurality of positioning holes (22) are equidistantly arranged along the circumference on one side of the positioning ring (20) close to the positioning groove (19). One end of the positioning rod (21) extends out of the connecting block (13) and is adapted to the positioning holes (22). The other end of the positioning rod (21) is fixedly connected with a buckle (23). An annular clamping block (24) is fixedly connected in the cavity. The buckle (23) and the annular clamping block (24) are arranged in correspondence. A plurality of circular holes are equidistantly arranged along the circumference in the connecting groove (14). A push rod (25) is slidably connected in the circular holes. One end of the push rod (25) corresponds to the threaded rod (15). The other end of the push rod (25) extends into the cavity and is fixedly connected with one end of a push block (26). The other end of the push block (26) corresponds to the buckle (23).

5. The composite structure for fixing a high-voltage wall bushing on a firewall according to claim 4, wherein: The splicing member includes a plurality of splicing rods (27). One end of each splicing rod (27) is hinged to the inner wall of the second connecting pipe (17), and a splicing block (28) is fixedly connected to the other end of the splicing rod (27). A plurality of splicing holes (29) are formed in the inner side wall of the first connecting pipe (16). The splicing block (28) extends out of the second connecting pipe (17) and is adapted to the splicing hole (29). A first ejector rod (30) is slidably connected to one end of the second connecting pipe (17) close to the first connecting pipe (16). One end of the first ejector rod (30) is arranged corresponding to the inner wall of the first connecting pipe (16), and the other end of the first ejector rod (30) extends into the second connecting pipe (17), and one ends of a plurality of second ejector rods (31) are hinged along the circumferential direction. The other ends of the second ejector rods (31) are arranged corresponding to the splicing rods (27).

6. A composite structure for fixing a high-voltage wall bushing on a firewall according to claim 4, characterized in that: A spring (33) is sleeved on the positioning rod (21), and two ends of the spring (33) are fixedly connected to the inner wall of the cavity and the side wall of the positioning rod (21) respectively.

7. A composite structure for fixing a high-voltage wall bushing on a firewall according to claim 5, characterized in that: A first torsion spring (34) and a second torsion spring (35) are respectively arranged between the splicing rod (27) and the inner wall of the second connecting pipe (17) and between the second ejector rod (31) and the first ejector rod (30). Two ends of the first torsion spring (34) are fixedly connected to the splicing rod (27) and the inner wall of the second connecting pipe (17) respectively. Two ends of the second torsion spring (35) are fixedly connected to the second ejector rod (31) and the first ejector rod (30) respectively.

8. A composite structure for fixing a high-voltage wall bushing on a firewall according to claim 3, characterized in that: Expansive fireproof putty is arranged in both the cylindrical structure and the gap.

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