Prefabricated batten assembly type firewall for transformer substation main transformer

Abstract

The utility model relates to the technical field of firewalls of transformer substations, and discloses a prefabricated batten assembly type firewall for a main transformer of a transformer substation, which comprises a cast-in-place concrete foundation base, a first side column assembly is connected to the position, located at the cup-opening-shaped mounting groove, of the left side of the inner wall of the cast-in-place concrete foundation base through C35 micro-expansion fine aggregate concrete in a pouring mode, and a first middle column assembly is connected to the position, located on the right side of the first side column assembly, of the inner wall of the cast-in-place concrete foundation base through C35 micro-expansion fine aggregate concrete in a pouring mode. By adopting the prefabricated batten assembly type structure, the components of the firewall are modularly designed, so that the mounting and dismounting processes are simpler and more convenient, the construction efficiency is improved, and meanwhile, the use of the prefabricated parts can reduce on-site wet operation and reduce environmental pollution and labor cost.

Description

Technical Field

[0001] The utility model relates to the technical field of substation firewalls, in particular to a precast slab assembled firewall for a main transformer in a substation. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change the AC voltage. Its main components are the primary coil, secondary coil, and iron core (magnetic core). Its main functions include: voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization (magnetic saturation transformer), etc. It can be classified by use as: distribution transformer, power transformer, fully enclosed transformer, combined transformer, dry-type transformer, oil-immersed transformer, single-phase transformer, electric furnace transformer, rectifier transformer, etc. In order to prevent the occurrence of short-circuit fires in the main transformer of a substation, a firewall is generally set between two adjacent main transformers to avoid the situation where a fire in one main transformer causes the adjacent main transformer to burn out.

[0003] However, when installing the existing firewalls used for main transformers in substations, the overall on-site casting method is generally adopted, which will lead to a long overall construction period of the entire firewall, affecting the normal use of the substation, and the overall fire prevention performance of the on-site cast firewall is poor.

[0004] Therefore, we propose a precast slab assembled firewall for a main transformer in a substation. Content of the Utility Model

[0005] The utility model mainly solves the technical problems existing in the above-mentioned prior art, and provides a precast slab assembled firewall for a main transformer in a substation.

[0006] To achieve the above object, the utility model adopts the following technical solutions. A precast strip panel assembled firewall for a main transformer in a substation includes a cast-in-place concrete foundation base. Cup-shaped installation grooves are respectively formed at the top of the cast-in-place concrete foundation base. A first side column assembly is connected by pouring C35 slightly expanded fine aggregate concrete at the left inner wall of the cast-in-place concrete foundation base at the cup-shaped installation groove. A first middle column assembly is connected by pouring C35 slightly expanded fine aggregate concrete at the inner wall of the cast-in-place concrete foundation base on the right side of the first side column assembly. A second middle column assembly is connected by pouring C35 slightly expanded fine aggregate concrete at the inner wall of the cast-in-place concrete foundation base on the right side of the first middle column assembly, and the structure of the second middle column assembly is the same as that of the first middle column assembly. A second side column assembly is connected by pouring C35 slightly expanded fine aggregate concrete at the inner wall of the cast-in-place concrete foundation base on the right side of the second middle column assembly. A first foundation bottom beam assembly is arranged at the left top of the cast-in-place concrete foundation base. A second foundation bottom beam assembly is arranged at the middle top of the cast-in-place concrete foundation base. A third foundation bottom beam assembly is arranged at the right top of the cast-in-place concrete foundation base. A first upper top beam assembly is arranged at the top of the first side column assembly, and the right bottom of the first upper top beam assembly is fixedly connected to the top of the first middle column assembly. A second upper top beam assembly is arranged at the right top of the first middle column assembly, and the right bottom of the second upper top beam assembly is fixedly connected to the top of the second middle column assembly. A third upper top beam assembly is arranged at the right top of the second middle column assembly, and the right bottom of the third upper top beam assembly is fixedly connected to the top of the second side column assembly. First precast firewall panels are uniformly arranged on the left wall surface of the second side column assembly. Second precast firewall panels are uniformly arranged on the left wall surface of the second middle column assembly. Third precast firewall panels and precast ladder embedded parts firewall panels are respectively arranged on the left wall surface of the first middle column assembly. Fourth precast firewall panels are arranged at the upper end of the first precast firewall panels on the left wall surface of the second side column assembly. Fifth precast firewall panels are arranged at the upper end of the second precast firewall panels on the left wall surface of the second middle column assembly. Sixth precast firewall panels are arranged at the upper end of the third precast firewall panels on the left wall surface of the first middle column assembly.

[0007] Preferably, the first side column assembly includes a first side column main body. A first insertion column is fixedly installed at the bottom of the first side column main body, and the outer wall of the first insertion column is movably inserted into the inner wall of the cast-in-place concrete foundation base at the cup-shaped installation groove. A first fireproof panel installation card slot is formed on the right wall surface of the first side column main body. The outer left sides of the third precast firewall panel, the precast ladder embedded parts firewall panel and the sixth precast firewall panel are respectively movably clamped with the inner wall of the first side column main body at the first fireproof panel installation card slot. A first embedded transfer and lifting steel pipe is arranged on the front surface of the first side column main body. A first ladder embedded part is arranged inside the first side column main body. A first reserved steel bar is arranged at the top of the first side column main body. A first cast-in-place enlarged column head is arranged at the top of the first side column main body at the first reserved steel bar.

[0008] Preferably, the first middle column assembly includes a first middle column main body. A second insertion column is fixedly installed at the bottom of the first middle column main body, and the outer wall of the second insertion column is movably inserted into the inner wall of the cast-in-place concrete foundation base at the cup-shaped installation groove. A second fireproof board installation card slot is formed on the left side wall surface of the first middle column main body, and the outer right sides of the third precast fireproof wall board, the precast ladder embedment fireproof wall board, and the sixth precast fireproof wall board are movably clamped to the inner wall of the first middle column main body at the second fireproof board installation card slot. A third fireproof board installation card slot is formed on the right side wall surface of the first middle column main body, and the outer left sides of the second precast fireproof wall board and the fifth precast fireproof wall board are movably clamped to the inner wall of the first middle column main body at the third fireproof board installation card slot. A second embedded transfer and lifting steel pipe is arranged on the front surface of the first middle column main body. A second reserved steel bar is arranged at the top of the first middle column main body, and a second cast-in-place enlarged column head is arranged at the top of the first middle column main body at the position of the second reserved steel bar.

[0009] Preferably, the second side column assembly includes a second side column main body. A third insertion column is fixedly installed at the bottom of the second side column main body, and the outer wall of the third insertion column is movably inserted into the inner wall of the cast-in-place concrete foundation base at the cup-shaped installation groove. A fourth fireproof board installation card slot is formed on the left side wall surface of the second side column main body, and the outer right sides of the first precast fireproof wall board and the fourth precast fireproof wall board are movably clamped to the inner wall of the second side column main body at the fourth fireproof board installation card slot. A third embedded transfer and lifting steel pipe is arranged on the front surface of the second side column main body. A third reserved steel bar is arranged at the top of the second side column main body, and a third cast-in-place enlarged column head is arranged at the top of the second side column main body at the position of the third reserved steel bar.

[0010] Preferably, the first foundation bottom beam assembly includes a first foundation bottom beam main body. First card slot mortise joints are arranged on the left and right side wall surfaces of the first foundation bottom beam main body, and the ends of the first card slot mortise joints away from the first foundation bottom beam main body are respectively movably clamped to the first fireproof board installation card slot and the second fireproof board installation card slot. A first installation groove is formed at the top of the first foundation bottom beam main body, and the lower end of the outer wall of the third precast fireproof wall board is movably clamped to the inner wall of the first foundation bottom beam main body at the first installation groove. A first preset steel bar lifting ring is arranged at the top of the first foundation bottom beam main body.

[0011] Preferably, the second basic bottom beam assembly includes a second basic bottom beam main body. Second card slot mortise joints are provided on the left and right side wall surfaces of the second basic bottom beam main body, and the ends of the second card slot mortise joints away from the second basic bottom beam main body are respectively movably engaged with the third fireproof board installation card slot and the left side inner wall of the second middle column assembly. A second installation groove is formed in the top of the second basic bottom beam main body, and the inner wall of the second basic bottom beam main body at the position of the second installation groove is movably engaged with the lower end of the outer wall of the second precast fireproof wall panel. A second preset steel bar lifting ring is provided on the top of the second basic bottom beam main body.

[0012] Preferably, the third basic bottom beam assembly includes a third basic bottom beam main body. Third card slot mortise joints are provided on the left and right side wall surfaces of the third basic bottom beam main body, and the ends of the third card slot mortise joints away from the third basic bottom beam main body are respectively movably engaged with the right side inner wall of the second middle column assembly and the fourth fireproof board installation card slot. A third installation groove is formed in the top of the third basic bottom beam main body, and the inner wall of the third basic bottom beam main body at the position of the third installation groove is movably engaged with the lower end of the outer wall of the first precast fireproof wall panel. A third preset steel bar lifting ring is provided on the top of the third basic bottom beam main body.

[0013] Preferably, the first upper top beam assembly includes a first upper top beam main body. First end reserved steel bars are provided on the left and right side wall surfaces of the first upper top beam main body, and the outer walls of the first end reserved steel bars are respectively fixedly connected with the inner walls of the first cast-in-place enlarged column head and the second cast-in-place enlarged column head. A first hoisting steel pipe is provided on the front surface of the first upper top beam main body, and a second ladder embedment is provided inside the first upper top beam main body.

[0014] Preferably, the second upper top beam assembly includes a second upper top beam main body. Second end reserved steel bars are provided on the left and right side wall surfaces of the second upper top beam main body, and the outer walls of the second end reserved steel bars are respectively fixedly connected with the inner walls of the second cast-in-place enlarged column head and the second middle column assembly. A second hoisting steel pipe is provided on the front surface of the second upper top beam main body.

[0015] Preferably, the third upper top beam assembly includes a third upper top beam main body. Third end reserved steel bars are provided on the left and right side wall surfaces of the third upper top beam main body, and the outer walls of the third end reserved steel bars are respectively fixedly connected with the inner walls of the second middle column assembly and the third cast-in-place enlarged column head. A third hoisting steel pipe is provided on the front surface of the third upper top beam main body.

[0016] Beneficial effects

[0017] The utility model provides a precast slab assembled firewall for a substation main transformer. It has the following beneficial effects:

[0018] (1) This precast panel assembled firewall for the main transformer of a substation adopts a precast panel assembled structure, modularizes the components of the firewall, making the installation and disassembly processes more convenient, improving the construction efficiency. At the same time, the use of precast components can reduce on-site wet operations, reducing environmental pollution and labor costs.

[0019] (2) This precast panel assembled firewall for the main transformer of a substation can effectively isolate the fire source and prevent the spread of fire by setting multiple precast firewall panels, improving the safety performance of the main transformer of the substation. At the same time, the movable snap connection method between components makes the firewall have good overall stability and can effectively resist the influence of natural disasters such as external wind force and earthquakes.

[0020] (3) This precast panel assembled firewall for the main transformer of a substation is convenient for hoisting operations during transportation and installation by setting embedded transfer hoisting steel pipes and preset steel bar lifting rings, improving the construction convenience. In addition, each component of the firewall can be precast and produced according to actual needs, with good flexibility and customizability, and can adapt to the installation requirements of different main transformers of substations. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall front structure of the present utility model;

[0022] Figure 2 is a schematic diagram of the front structure of the first side column assembly, the first middle column assembly, the second middle column assembly and the second side column assembly of the present utility model;

[0023] Figure 3 is a schematic diagram of the front structure of the first basic bottom beam assembly, the second basic bottom beam assembly and the third basic bottom beam assembly of the present utility model;

[0024] Figure 4 is a schematic diagram of the front structure of the first upper top beam assembly, the second upper top beam assembly and the third upper top beam assembly of the present utility model.

[0025] Legend: 10, cast-in-place concrete foundation base; 11, first side column assembly; 12, first middle column assembly; 13, second middle column assembly; 14, second side column assembly; 15, first foundation bottom beam assembly; 16, second foundation bottom beam assembly; 17, third foundation bottom beam assembly; 18, first top beam assembly; 19, second top beam assembly; 20, third top beam assembly; 21, first precast firewall panel; 22, second precast firewall panel; 23, third precast firewall panel; 24, precast ladder embedded part firewall panel; 25, fourth precast firewall panel; 26, fifth precast firewall panel; 27, sixth precast firewall panel; 28, cup-shaped installation groove; 29, first side column main body; 30, first inserted column; 31, first firewall panel installation card slot; 32, first embedded transfer and lifting steel pipe; 33, first ladder embedded part; 34, first reserved steel bar; 35, first cast-in-place enlarged column head; 36, first middle column main body; 37, second inserted column; 38, second firewall panel installation card slot; 39, third firewall panel installation card slot; 40, second embedded transfer and lifting steel pipe; 41, second reserved steel bar; 42, second cast-in-place enlarged column head; 43, second side column main body; 44, third inserted column; 45, fourth firewall panel installation card slot; 46, third embedded transfer and lifting steel pipe; 47, third reserved steel bar; 48, third cast-in-place enlarged column head; 49, first foundation bottom beam main body; 50, first card slot mortise joint; 51, first installation groove; 52, first preset steel bar lifting ring; 53, second foundation bottom beam main body; 54, second card slot mortise joint; 55, second installation groove; 56, second preset steel bar lifting ring; 57, third foundation bottom beam main body; 58, third card slot mortise joint; 59, third installation groove; 60, third preset steel bar lifting ring; 61, first top beam main body; 62, first end reserved steel bar; 63, first lifting steel pipe; 64, second ladder embedded part; 65, second top beam main body; 66, second end reserved steel bar; 67, second lifting steel pipe; 68, third top beam main body; 69, third end reserved steel bar; 70, third lifting steel pipe. Detailed implementation manners

[0026] Embodiment 1: A precast slab assembled firewall for a main transformer of a substation, as Figure 1As shown in the figure, it includes a cast-in-place concrete foundation base 10. Cup-shaped installation grooves 28 are respectively formed at the top of the cast-in-place concrete foundation base 10. At the cup-shaped installation groove 28 on the left side of the inner wall of the cast-in-place concrete foundation base 10, a first side column assembly 11 is connected by pouring with C35 slightly expanded fine aggregate concrete. On the right side of the first side column assembly 11 on the inner wall of the cast-in-place concrete foundation base 10, a first middle column assembly 12 is connected by pouring with C35 slightly expanded fine aggregate concrete. On the right side of the first middle column assembly 12 on the inner wall of the cast-in-place concrete foundation base 10, a second middle column assembly 13 is connected by pouring with C35 slightly expanded fine aggregate concrete, and the structure of the second middle column assembly 13 is the same as that of the first middle column assembly 12. On the right side of the second middle column assembly 13 on the inner wall of the cast-in-place concrete foundation base 10, a second side column assembly 14 is connected by pouring with C35 slightly expanded fine aggregate concrete. A first foundation bottom beam assembly 15 is arranged on the left side of the top of the cast-in-place concrete foundation base 10. A second foundation bottom beam assembly 16 is arranged in the middle of the top of the cast-in-place concrete foundation base 10. A third foundation bottom beam assembly 17 is arranged on the right side of the top of the cast-in-place concrete foundation base 10. A first upper top beam assembly 18 is arranged at the top of the first side column assembly 11, and the right side of the bottom of the first upper top beam assembly 18 is fixedly connected to the top of the first middle column assembly 12. A second upper top beam assembly 19 is arranged on the right side of the top of the first middle column assembly 12, and the right side of the bottom of the second upper top beam assembly 19 is fixedly connected to the top of the second middle column assembly 13. A third upper top beam assembly 20 is arranged on the right side of the top of the second middle column assembly 13, and the right side of the bottom of the third upper top beam assembly 20 is fixedly connected to the top of the second side column assembly 14. First precast fire wall panels 21 are uniformly arranged on the left side wall surface of the second side column assembly 14. Second precast fire wall panels 22 are uniformly arranged on the left side wall surface of the second middle column assembly 13. Third precast fire wall panels 23 and precast ladder embedment fire wall panels 24 are respectively arranged on the left side wall surface of the first middle column assembly 12. Fourth precast fire wall panels 25 are arranged at the upper end of the first precast fire wall panels 21 on the left side wall surface of the second side column assembly 14. Fifth precast fire wall panels 26 are arranged at the upper end of the second precast fire wall panels 22 on the left side wall surface of the second middle column assembly 13. Sixth precast fire wall panels 27 are arranged at the upper end of the third precast fire wall panels 23 on the left side wall surface of the first middle column assembly 12. By adopting a precast strip assembly structure, the components of the fire wall are modularly designed, making the installation and disassembly processes more convenient, improving the construction efficiency. At the same time, the use of precast components can reduce on-site wet operations, reducing environmental pollution and labor costs.

[0027] Embodiment 2: On the basis of Embodiment 1, as Figure 2As shown in the figure, the first side column assembly 11 includes a first side column main body 29. A first insertion column 30 is fixedly installed at the bottom of the first side column main body 29, and the outer wall of the first insertion column 30 is movably inserted into the inner wall of the cast-in-place concrete foundation base 10 at the cup-shaped installation groove 28. A first fireproof board installation card slot 31 is provided on the right side wall surface of the first side column main body 29. The inner wall of the first side column main body 29 at the first fireproof board installation card slot 31 is movably clamped with the left outer walls of the third precast firewall board 23, the precast ladder embedded part firewall board 24, and the sixth precast firewall board 27 respectively. A first embedded transfer and lifting steel pipe 32 is provided on the front surface of the first side column main body 29. A first ladder embedded part 33 is provided inside the first side column main body 29. A first reserved steel bar 34 is provided at the top of the first side column main body 29. A first cast-in-place enlarged column head 35 is provided at the top of the first side column main body 29 at the first reserved steel bar 34. The first middle column assembly 12 includes a first middle column main body 36. A second insertion column 37 is fixedly installed at the bottom of the first middle column main body 36, and the outer wall of the second insertion column 37 is movably inserted into the inner wall of the cast-in-place concrete foundation base 10 at the cup-shaped installation groove 28. A second fireproof board installation card slot 38 is provided on the left side wall surface of the first middle column main body 36. The inner wall of the first middle column main body 36 at the second fireproof board installation card slot 38 is movably clamped with the right outer walls of the third precast firewall board 23, the precast ladder embedded part firewall board 24, and the sixth precast firewall board 27 respectively. A third fireproof board installation card slot 39 is provided on the right side wall surface of the first middle column main body 36. The inner wall of the first middle column main body 36 at the third fireproof board installation card slot 39 is movably clamped with the left outer walls of the second precast firewall board 22 and the fifth precast firewall board 26 respectively. A second embedded transfer and lifting steel pipe 40 is provided on the front surface of the first middle column main body 36. A second reserved steel bar 41 is provided at the top of the first middle column main body 36. A second cast-in-place enlarged column head 42 is provided at the top of the first middle column main body 36 at the second reserved steel bar 41. The second side column assembly 14 includes a second side column main body 43. A third insertion column 44 is fixedly installed at the bottom of the second side column main body 43, and the outer wall of the third insertion column 44 is movably inserted into the inner wall of the cast-in-place concrete foundation base 10 at the cup-shaped installation groove 28. A fourth fireproof board installation card slot 45 is provided on the left side wall surface of the second side column main body 43. The inner wall of the second side column main body 43 at the fourth fireproof board installation card slot 45 is movably clamped with the right outer walls of the first precast firewall board 21 and the fourth precast firewall board 25 respectively. A third embedded transfer and lifting steel pipe 46 is provided on the front surface of the second side column main body 43. A third reserved steel bar 47 is provided at the top of the second side column main body 43. A third cast-in-place enlarged column head 48 is provided at the top of the second side column main body 43 at the third reserved steel bar 47. By arranging multiple precast firewall boards, the fire source can be effectively isolated, the spread of fire can be blocked, and the safety performance of the main transformer in the substation is improved. At the same time, the movable clamping connection method between the components makes the firewall have better overall stability.It can effectively resist the influence of natural disasters such as external wind force and earthquakes.,

[0028] Embodiment 3: On the basis of Embodiment 1 and Embodiment 2, as Figure 3 - Figure 4As shown, the first foundation bottom beam assembly 15 includes a first foundation bottom beam main body 49. First card slot mortise joints 50 are provided on the left and right side wall surfaces of the first foundation bottom beam main body 49. And the ends of the first card slot mortise joints 50 away from the first foundation bottom beam main body 49 are respectively movably engaged with the first fireproof board installation card slot 31 and the second fireproof board installation card slot 38. A first installation groove 51 is formed at the top of the first foundation bottom beam main body 49. And the inner wall of the first foundation bottom beam main body 49 at the position of the first installation groove 51 is movably engaged with the lower end of the outer wall of the third precast fireproof wall panel 23. A first preset steel bar lifting ring 52 is provided at the top of the first foundation bottom beam main body 49. The second foundation bottom beam assembly 16 includes a second foundation bottom beam main body 53. Second card slot mortise joints 54 are provided on the left and right side wall surfaces of the second foundation bottom beam main body 53. And the ends of the second card slot mortise joints 54 away from the second foundation bottom beam main body 53 are respectively movably engaged with the third fireproof board installation card slot 39 and the left side inner wall of the second middle column assembly 13. A second installation groove 55 is formed at the top of the second foundation bottom beam main body 53. And the inner wall of the second foundation bottom beam main body 53 at the position of the second installation groove 55 is movably engaged with the lower end of the outer wall of the second precast fireproof wall panel 22. A second preset steel bar lifting ring 56 is provided at the top of the second foundation bottom beam main body 53. The third foundation bottom beam assembly 17 includes a third foundation bottom beam main body 57. Third card slot mortise joints 58 are provided on the left and right side wall surfaces of the third foundation bottom beam main body 57. And the ends of the third card slot mortise joints 58 away from the third foundation bottom beam main body 57 are respectively movably engaged with the right side inner wall of the second middle column assembly 13 and the fourth fireproof board installation card slot 45. A third installation groove 59 is formed at the top of the third foundation bottom beam main body 57. And the inner wall of the third foundation bottom beam main body 57 at the position of the third installation groove 59 is movably engaged with the lower end of the outer wall of the first precast fireproof wall panel 21. A third preset steel bar lifting ring 60 is provided at the top of the third foundation bottom beam main body 57. The first upper top beam assembly 18 includes a first upper top beam main body 61. First end reserved steel bars 62 are provided on the left and right side wall surfaces of the first upper top beam main body 61. And the outer walls of the first end reserved steel bars 62 are respectively fixedly connected with the inner walls of the first cast-in-place enlarged column head 35 and the second cast-in-place enlarged column head 42. A first hoisting steel pipe 63 is provided on the front surface of the first upper top beam main body 61. A second ladder embedding part 64 is arranged inside the first upper top beam main body 61. The second upper top beam assembly 19 includes a second upper top beam main body 65. Second end reserved steel bars 66 are provided on the left and right side wall surfaces of the second upper top beam main body 65. And the outer walls of the second end reserved steel bars 66 are respectively fixedly connected with the inner walls of the second cast-in-place enlarged column head 42 and the second middle column assembly 13. A second hoisting steel pipe 67 is provided on the front surface of the second upper top beam main body 65. The third upper top beam assembly 20 includes a third upper top beam main body 68. Third end reserved steel bars 69 are provided on the left and right side wall surfaces of the third upper top beam main body 68,Moreover, the outer walls of the reserved steel bars 69 at the third end are fixedly connected to the inner walls of the second middle column assembly 13 and the third cast-in-place enlarged column head 48 respectively. A third hoisting steel pipe 70 is arranged on the front surface of the third upper beam main body 68. By providing embedded transfer hoisting steel pipes and preset steel bar lifting rings, the hoisting operation during transportation and installation is facilitated, improving the construction convenience. In addition, each component of the firewall can be prefabricated according to actual needs, having good flexibility and customizability, and being able to adapt to the installation requirements of different substation main transformers.,

[0029] The working principle of the present utility model: First, according to the installation requirements of the substation main transformer, prefabricate and produce the first middle column assembly, the second middle column assembly, the second side column assembly, the first foundation bottom beam assembly, the second foundation bottom beam assembly, the third foundation bottom beam assembly, the first upper beam assembly, the second upper beam assembly, the third upper beam assembly, the first prefabricated firewall panel, the second prefabricated firewall panel, the third prefabricated firewall panel, the prefabricated ladder embedded part firewall panel, the fourth prefabricated firewall panel, the fifth prefabricated firewall panel and the sixth prefabricated firewall panel. Each component is connected to each other through an active snap connection method to form a complete firewall structure. During the installation process of the substation main transformer, assemble each component according to the preset position, and perform hoisting operations through the embedded transfer hoisting steel pipes and the preset steel bar lifting rings to ensure the accurate installation of each component. Each component of the firewall is tightly connected together through the active snap connection method to form a strong barrier, which can effectively isolate the fire source and prevent the spread of fire, improving the safety performance of the substation main transformer. At the same time, each component of the firewall has good overall stability and can effectively resist the influence of external natural disasters such as wind force and earthquake, ensuring the stable operation of the substation main transformer. In addition, each component of the firewall can be prefabricated according to actual needs, having good flexibility and customizability, and being able to adapt to the installation requirements of different substation main transformers, improving the construction efficiency and construction quality.

[0030] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A precast slab assembled firewall for a main transformer in a substation, comprising a cast-in-place concrete foundation base (10), characterized in that: The top of the cast-in-place concrete foundation base (10) is respectively provided with cup-shaped installation grooves (28). On the left side of the inner wall of the cast-in-place concrete foundation base (10) at the position of the cup-shaped installation groove (28), a first side column assembly (11) is connected by pouring micro-expansion fine aggregate concrete with a first cast-in-place enlarged column head (35). On the right side of the first side column assembly (11) on the inner wall of the cast-in-place concrete foundation base (10), a first middle column assembly (12) is connected by pouring micro-expansion fine aggregate concrete with a first cast-in-place enlarged column head (35). On the right side of the first middle column assembly (12) on the inner wall of the cast-in-place concrete foundation base (10), a second middle column assembly (13) is connected by pouring micro-expansion fine aggregate concrete with a first cast-in-place enlarged column head (35), and the structure of the second middle column assembly (13) is the same as that of the first middle column assembly (12). On the right side of the second middle column assembly (13) on the inner wall of the cast-in-place concrete foundation base (10), a second side column assembly (14) is connected by pouring micro-expansion fine aggregate concrete with a first cast-in-place enlarged column head (35). A first foundation bottom beam assembly (15) is arranged on the left side of the top of the cast-in-place concrete foundation base (10), a second foundation bottom beam assembly (16) is arranged in the middle of the top of the cast-in-place concrete foundation base (10), and a third foundation bottom beam assembly (17) is arranged on the right side of the top of the cast-in-place concrete foundation base (10). A first upper top beam assembly (18) is arranged on the top of the first side column assembly (11), and the right side of the bottom of the first upper top beam assembly (18) is fixedly connected to the top of the first middle column assembly (12). A second upper top beam assembly (19) is arranged on the right side of the top of the first middle column assembly (12), and the right side of the bottom of the second upper top beam assembly (19) is fixedly connected to the top of the second middle column assembly (13). A third upper top beam assembly (20) is arranged on the right side of the top of the second middle column assembly (13), and the right side of the bottom of the third upper top beam assembly (20) is fixedly connected to the top of the second side column assembly (14). First precast fire wall panels (21) are uniformly arranged on the left side wall surface of the second side column assembly (14), second precast fire wall panels (22) are uniformly arranged on the left side wall surface of the second middle column assembly (13), third precast fire wall panels (23) and precast ladder embedded fire wall panels (24) are respectively arranged on the left side wall surface of the first middle column assembly (12), fourth precast fire wall panels (25) are arranged on the upper end of the first precast fire wall panels (21) on the left side wall surface of the second side column assembly (14), fifth precast fire wall panels (26) are arranged on the upper end of the second precast fire wall panels (22) on the left side wall surface of the second middle column assembly (13), and sixth precast fire wall panels (27) are arranged on the upper end of the third precast fire wall panels (23) on the left side wall surface of the first middle column assembly (12).

2. The prefabricated strip panel assembled firewall for the main transformer of a substation according to claim 1, wherein: The first side column assembly (11) includes a first side column main body (29). A first insertion column (30) is fixedly installed at the bottom of the first side column main body (29). The outer wall of the first insertion column (30) is movably inserted into the inner wall of the cast-in-place concrete foundation base (10) at the cup-shaped installation groove (28). A first fireproof board installation card slot (31) is formed on the right side wall surface of the first side column main body (29). The inner wall of the first side column main body (29) at the first fireproof board installation card slot (31) is respectively movably engaged with the outer walls of the third precast firewall board (23), the precast ladder embedded part firewall board (24), and the sixth precast firewall board (27) on the left side. A first embedded transfer and lifting steel pipe (32) is arranged on the front surface of the first side column main body (29). A first ladder embedded part (33) is arranged inside the first side column main body (29). A first reserved steel bar (34) is arranged at the top of the first side column main body (29). A first cast-in-place enlarged column head (35) is arranged at the top of the first side column main body (29) at the first reserved steel bar (34).

3. The prefabricated slab assembled firewall for the main transformer of the substation according to claim 1, wherein: The first middle column assembly (12) includes a first middle column main body (36). A second insertion column (37) is fixedly installed at the bottom of the first middle column main body (36). The outer wall of the second insertion column (37) is movably inserted into the inner wall of the cast-in-place concrete foundation base (10) at the cup-shaped installation groove (28). A second fireproof board installation card slot (38) is formed on the left side wall surface of the first middle column main body (36). The inner wall of the first middle column main body (36) at the second fireproof board installation card slot (38) is respectively movably engaged with the outer walls of the third precast firewall board (23), the precast ladder embedded part firewall board (24), and the sixth precast firewall board (27) on the right side. A third fireproof board installation card slot (39) is formed on the right side wall surface of the first middle column main body (36). The inner wall of the first middle column main body (36) at the third fireproof board installation card slot (39) is respectively movably engaged with the outer walls of the second precast firewall board (22) and the fifth precast firewall board (26) on the left side. A second embedded transfer and lifting steel pipe (40) is arranged on the front surface of the first middle column main body (36). A second reserved steel bar (41) is arranged at the top of the first middle column main body (36). A second cast-in-place enlarged column head (42) is arranged at the top of the first middle column main body (36) at the second reserved steel bar (41).

4. The prefabricated strip panel assembled firewall for the main transformer of a substation according to claim 1, wherein: The second side column assembly (14) includes a second side column main body (43). A third insertion column (44) is fixedly installed at the bottom of the second side column main body (43). The outer wall of the third insertion column (44) is movably inserted into the inner wall of the cast-in-place concrete foundation base (10) at the cup-shaped installation groove (28). A fourth fireproof board installation card slot (45) is formed on the left side wall surface of the second side column main body (43). The outer walls of the first precast firewall board (21) and the fourth precast firewall board (25) are movably engaged with the inner wall of the second side column main body (43) at the fourth fireproof board installation card slot (45). A third embedded transfer and lifting steel pipe (46) is arranged on the front surface of the second side column main body (43). A third reserved steel bar (47) is arranged at the top of the second side column main body (43). A third cast-in-place enlarged column head (48) is arranged at the top of the second side column main body (43) at the position of the third reserved steel bar (47).

5. The precast slab assembled firewall for the main transformer of a substation according to claim 1, wherein: The first foundation bottom beam assembly (15) includes a first foundation bottom beam main body (49). First card slot mortise joints (50) are arranged on the left and right side wall surfaces of the first foundation bottom beam main body (49). The ends of the first card slot mortise joints (50) away from the first foundation bottom beam main body (49) are respectively movably engaged with the first fireproof board installation card slot (31) and the second fireproof board installation card slot (38). A first installation groove (51) is formed at the top of the first foundation bottom beam main body (49). The outer wall of the lower end of the third precast firewall board (23) is movably engaged with the inner wall of the first foundation bottom beam main body (49) at the first installation groove (51). A first preset steel bar lifting ring (52) is arranged at the top of the first foundation bottom beam main body (49).

6. The prefabricated slab assembled firewall for the main transformer of a substation according to claim 1, wherein: The second foundation bottom beam assembly (16) includes a second foundation bottom beam main body (53). Second card slot mortise joints (54) are arranged on the left and right side wall surfaces of the second foundation bottom beam main body (53). The ends of the second card slot mortise joints (54) away from the second foundation bottom beam main body (53) are respectively movably engaged with the third fireproof board installation card slot (39) and the left side inner wall of the second middle column assembly (13). A second installation groove (55) is formed at the top of the second foundation bottom beam main body (53). The outer wall of the lower end of the second precast firewall board (22) is movably engaged with the inner wall of the second foundation bottom beam main body (53) at the second installation groove (55). A second preset steel bar lifting ring (56) is arranged at the top of the second foundation bottom beam main body (53).

7. The prefabricated strip panel assembled firewall for the main transformer of a substation according to claim 1, characterized in that: The third basic bottom beam assembly (17) includes a third basic bottom beam body (57). Third card slot mortise joints (58) are provided on the left and right side wall surfaces of the third basic bottom beam body (57). The ends of the third card slot mortise joints (58) away from the third basic bottom beam body (57) are respectively movably engaged with the inner wall on the right side of the second middle column assembly (13) and the fourth fireproof board installation card slot (45). A third installation groove (59) is formed in the top of the third basic bottom beam body (57). The inner wall of the third basic bottom beam body (57) at the position of the third installation groove (59) is movably engaged with the lower end of the outer wall of the first precast fireproof wall panel (21). A third preset steel bar lifting ring (60) is provided on the top of the third basic bottom beam body (57).

8. The prefabricated slab assembled firewall for the main transformer of a substation according to claim 1, characterized in that: The first upper top beam assembly (18) includes a first upper top beam body (61). First end reserved steel bars (62) are provided on the left and right side wall surfaces of the first upper top beam body (61). The outer walls of the first end reserved steel bars (62) are respectively fixedly connected with the inner walls of the first cast-in-place enlarged column head (35) and the second cast-in-place enlarged column head (42). A first hoisting steel pipe (63) is provided on the front surface of the first upper top beam body (61). A second ladder embedment (64) is arranged inside the first upper top beam body (61). The second upper top beam assembly (19) includes a second upper top beam body (65). Second end reserved steel bars (66) are provided on the left and right side wall surfaces of the second upper top beam body (65). The outer walls of the second end reserved steel bars (66) are respectively fixedly connected with the inner walls of the second cast-in-place enlarged column head (42) and the second middle column assembly (13). A second hoisting steel pipe (67) is provided on the front surface of the second upper top beam body (65).

9. The precast slab assembled firewall for the main transformer of a substation according to claim 1, characterized in that: The third upper top beam assembly (20) includes a third upper top beam body (68). Third end reserved steel bars (69) are provided on the left and right side wall surfaces of the third upper top beam body (68). The outer walls of the third end reserved steel bars (69) are respectively fixedly connected with the inner walls of the second middle column assembly (13) and the third cast-in-place enlarged column head (48). A third hoisting steel pipe (70) is provided on the front surface of the third upper top beam body (68).

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