A substation built inside a transformer

Abstract

The present invention discloses a substation with a built-in transformer, which includes one or more prefabricated cabins. Each prefabricated cabin is provided with corresponding functional modules according to functional requirements. The functional modules include a transformer module, an electrical equipment module, and an auxiliary function module. The transformer module, the electrical equipment module, and the auxiliary function module are divided into modules according to functions. Each functional module is spliced horizontally, and the transformer module is arranged beside the electrical equipment module and the auxiliary function module. Each functional module is prefabricated and wired in the factory respectively, and each is used as an independent transportation and installation unit, and is installed by means of top hoisting. Through reasonable module division and layout, the substation improves the degree of factory prefabrication of the prefabricated cabin, and realizes the optimal module division, the optimal factory prefabrication, the optimal transportation cost, and the optimal on-site construction.

Description

Technical Field

[0001] The present invention relates to the technical field of substations, and in particular to a substation with a built-in transformer. Background Art

[0002] Traditional substations are generally in the civil engineering mode, which requires on-site construction and erection, and has disadvantages such as long construction periods, large impacts on the surrounding environment, and large floor areas. With the increasing tension of urban land use and the continuous improvement of the residential density of residents, the construction of new substations in the city center has problems such as affecting the normal life of residents and the surrounding living environment. In addition, the construction of substations in harsh environments such as high altitudes also has problems such as long construction periods, poor environments, difficult construction, and high labor intensity of personnel.

[0003] To solve the above problems, prefabricated substation cabins with prefabricated cabin structures are widely used. High-voltage equipment, low-voltage equipment, secondary equipment, bus bridges and other electrical equipment are integrated in the prefabricated cabin, and auxiliary equipment such as corridors, ceilings, air ducts, stairs, and air conditioners are also integrated.

[0004] Traditional prefabricated substation cabins mostly adopt the layout of single-layer paving or double-layer layout. When facing substation schemes with 3 main transformers or more, the floor area is large, and the improvement of factory prefabrication level reaches a bottleneck. Moreover, for substations with built-in transformers, how to reasonably divide and layout the transformers, other electrical equipment modules, and auxiliary modules such as corridors in the cabin is the key to achieving the best module division, the best factory prefabrication, the best transportation cost, and the best on-site construction.

[0005] The above information disclosed in this background art is only used to increase the understanding of the background art of the present application. Therefore, it may include prior art that is not known to those of ordinary skill in the art. Summary of the Invention

[0006] In view of the problems pointed out in the background art, the present invention proposes a substation with a built-in transformer. Through reasonable module division and layout of the transformer module, other electrical equipment modules, and auxiliary function modules, the factory prefabrication level of the prefabricated cabin is improved, and the best module division, the best factory prefabrication, the best transportation cost, and the best on-site construction are achieved.

[0007] To achieve the above invention purpose, the present invention is implemented by adopting the following technical solutions:

[0008] The present invention provides a substation with a built-in transformer, including one or more layers of prefabricated cabins. Each layer of the prefabricated cabin is provided with corresponding function modules according to functional requirements. The function modules include a transformer module, an electrical equipment module, and an auxiliary function module;

[0009] The transformer module, the electrical equipment module, and the auxiliary function module are divided into modules according to their functions. Each functional module is spliced horizontally on each layer, and the transformer module is arranged beside the electrical equipment module and the auxiliary function module;

[0010] Each functional module is prefabricated and wired separately in the factory, and each is used as an independent transportation and installation unit, and is installed by means of top hoisting.

[0011] In some embodiments of the present application, positioning structures are provided at the bottom and top of each functional module as needed. Two adjacent functional modules on the left and right are horizontally positioned and spliced through the positioning structure, and two adjacent functional modules above and below are vertically positioned and spliced through the positioning structure.

[0012] In some embodiments of the present application, a certain functional module in the first-layer prefabricated cabin is selected as the first installation module I, and positioning structures are respectively provided at one end and / or both ends of the bottom of the first installation module I;

[0013] Fix the first installation module I to the prefabricated cabin foundation;

[0014] Install a positioning structure at the bottom end of one end of the second installation module I, and install the other end of the second installation module I on the positioning structure adjacent to it and provided on the first installation module I to achieve the horizontal splicing of the first installation module I and the second installation module I;

[0015] And so on, complete the horizontal splicing of all modules in the first-layer prefabricated cabin, and the last installed module does not need to install a positioning structure;

[0016] Select a certain functional module in the Nth layer (N = 2, 3,...) prefabricated cabin as the first installation module N, install the positioning structure on the top of the first layer, and respectively provide positioning structures at one end and / or both ends of the bottom of the first installation module N;

[0017] Fix the first installation module N to the top of the first-layer prefabricated cabin;

[0018] Install a positioning structure at the bottom end of one end of the second installation module N, and install the other end of the second installation module N on the positioning structure adjacent to it and provided on the first installation module N to achieve the horizontal splicing of the first installation module N and the second installation module N;

[0019] And so on, complete the horizontal splicing of all functional modules in the Nth layer prefabricated cabin, and the last installed functional module does not need to install a positioning structure.

[0020] In some embodiments of the present application, the positioning structure includes a positioning member and a guiding member;

[0021] A plurality of guiding columns are provided on the positioning member, guiding holes are provided on the guiding member, and the guiding member is arranged at the bottom of the functional module;

[0022] During splicing, the positioning member is installed on one of the functional modules to be spliced, and one of the guiding columns is passed through the guiding hole on the corresponding functional module, and then the guiding holes on the remaining functional modules to be spliced are correspondingly inserted into the remaining guiding columns.

[0023] In some embodiments of the present application, the size of each functional module is a standard modular size;

[0024] The standard modular size = the minimum size in each functional module + an integer multiple of the reference modular size, and the reference modular size is a preset fixed value.

[0025] In some embodiments of the present application, the transformer module includes a transformer device and a transformer cabin, and the transformer device is arranged in the transformer cabin

[0026] In some embodiments of the present application, the electrical equipment module includes an electrical equipment and an electrical equipment cabin, and the electrical equipment is arranged in the electrical equipment cabin;

[0027] A support frame barrel structure is arranged inside the electrical equipment cabin, and at least one of a bus duct, a cable duct, and a pressure relief duct is arranged in the internal space surrounded by the support frame barrel structure;

[0028] In some embodiments of the present application, the auxiliary functional module includes a corridor integration module, the bottom of which is provided with a floor and the top is provided with a ceiling, and an air duct and / or a bus bridge are arranged in the space between the ceiling and the top beam of the corridor integration module.

[0029] In some embodiments of the present application, the auxiliary functional module further includes a stair environmental control integration module, the inside of which is separated into an environmental control compartment and a stair compartment by a partition structure, an air conditioning device is arranged in the environmental control compartment, and a stair is arranged in the stair compartment.

[0030] Compared with the prior art, the advantages and positive effects of the present invention are:

[0031] The substation disclosed in the present application has a built-in transformer, divides the transformer module, the electrical equipment module, and the auxiliary functional module according to functions, and each module can be arbitrarily combined and arranged according to user needs.

[0032] The transformer module, electrical equipment module, and auxiliary function module are all prefabricated and wired in the factory respectively, and then transported to the customer site as transportation units, and then spliced as independent installation units, greatly improving the degree of factory prefabrication of the prefabricated cabin, achieving the optimal module division, the optimal factory prefabrication, the optimal transportation cost, and the optimal on-site construction.

[0033] One form of the electrical equipment module in this application only includes electrical equipment and does not include other auxiliary function modules such as corridors. Another form includes electrical equipment and corridor modules. Their common feature is that the electrical equipment is highly integrated in the same cabin, and prefabrication and wiring are completed in the factory. The sound production quality inspection mechanism in the factory effectively guarantees the product quality and avoids the technical problems of large on-site wiring workload and difficult wiring quality control in the prior art.

[0034] The support structure in the electrical equipment module not only plays the role of improving the structural strength, but also integrates the functions of wire routing and pressure relief, which helps to improve the internal structural compactness and further reduce the floor area of the cabin.

[0035] This application standardizes the interfaces between modules, standardizes and modularizes the module sizes, making each module have strong interchangeability and the feasibility of factory prefabrication.

[0036] The sizes of all modules are standard modular sizes. By setting the standard modular sizes, the modules can conveniently and quickly meet the expansion of substation equipment and the increase in maintenance space by increasing the number of modules, while reducing the types of modules.

[0037] In this application, each module adopts the method of top hoisting and bottom positioning to achieve rapid splicing and installation, improving the on-site installation efficiency and reliability.

[0038] After reading the specific implementation manners of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become clearer. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] 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 accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0040] Figure 1 Schematic diagram of a substation structure with a transformer built-in according to an embodiment;

[0041] Figure 2 Schematic diagram of a layout scheme of a modular prefabricated cabin according to an embodiment;

[0042] Figure 3 Another layout schematic diagram of the modular prefabricated cabin according to the embodiment;

[0043] Figure 4 Another layout schematic diagram of the modular prefabricated cabin according to the embodiment;

[0044] Figure 5 The "mu" - shaped segmentation method of each module in the prefabricated cabin in the prior art;

[0045] Figure 6 The segmentation method according to the module in the prefabricated cabin according to the embodiment;

[0046] Figure 7 The structural schematic diagram of the electrical equipment module according to the embodiment;

[0047] Figure 8 The structural schematic diagram of the support structure according to the embodiment;

[0048] Figure 9 is Figure 8 The structural schematic diagram after omitting the first side seal plate of the shown structure;

[0049] Figure 10 The sliding installation structure between the electrical equipment and the base according to the embodiment;

[0050] Figure 11 The horizontal splicing structure between two adjacent modules according to the embodiment;

[0051] Figure 12 is Figure 11 The enlarged view of part J in

[0052] Figure 13 is Figure 12 The exploded view of the shown structure;

[0053] Figure 14 The structural schematic diagram of the positioning part according to the embodiment;

[0054] Figure 15 The structural schematic diagram when two modules at the end are spliced vertically according to the embodiment;

[0055] Figure 16 The top view of a single module of the prefabricated cabin according to the embodiment;

[0056] Figure 17 is Figure 16 The front view in the A direction of the shown structure;

[0057] Figure 18 is Figure 16 The sectional view in the A - A direction of the shown structure;

[0058] Figure 19 Another layout schematic diagram of the partition structure according to the embodiment;

[0059] Figure 20 is Figure 19 The front view in the direction B of the structure shown;

[0060] Figure 21 is Figure 19 The sectional view taken along the line B - B of the structure shown;

[0061] Figure 22 Schematic diagram of the fixing structure for stacking the cabins up and down according to the embodiment;

[0062] Figure 23 The fixing structure for stacking the cabins up and down according to the embodiment;

[0063] Figure 24 Exploded view of the fixing structure for stacking the cabins up and down according to the embodiment;

[0064] Figure 25 Schematic diagram of the structure of the corridor integration module according to the embodiment;

[0065] Figure 26 Top view of the stair environmental control integration module according to the embodiment.

[0066] Reference numerals:

[0067] 10 - Prefabricated cabin, 11 - Corridor;

[0068] 21 - Transformer equipment, 22 - Transformer cabin;

[0069] 100 - Cabin, 110 - Base, 120 - Top beam, 130 - Support frame tube structure, 131 - Support frame wall, 132 - Connecting beam, 1321 - First connecting beam, 1322 - Second connecting beam, 133 - Angle support plate, 141 - Bus duct, 142 - Wiring duct, 143 - Pressure relief duct, 150 - Cable support, 151 - Fixing hole, 161 - First side sealing plate, 162 - Second side sealing plate, 1621 - Opening, 170 - Door body, 180 - Removable sealing plate, 181 - First removable sealing plate, 182 - Second removable sealing plate, 190 - Hoisting ring;

[0070] 200 - Electrical equipment;

[0071] 300 - Positioning structure, 310 - Positioning part, 311 - Substrate, 312 - Connecting part, 313 - Positioning column, 314 - First connecting hole, 320 - Guide part, 321 - Guide hole, 322 - Second connecting hole, 330 - Bolt;

[0072] 410 - Slide rail, 420 - Plastic wing nut;

[0073] 500 - Hoisting part;

[0074] 600 - Partition structure, 610 - Split escape door partition, 611 - First door frame, 612 - Opposite doors, 620 - Bi - direction single - opening door closer door partition, 621 - Second door frame, 622 - Bi - direction single - opening door closer door, 630 - Support - type partition, 631 - Support frame;

[0075] 700 - Fixing structure, 710 - First fixing beam, 720 - Second fixing beam, 721 - Arc - shaped bending part, 730 - Anti - rotation fixing part, 731 - Anti - rotation part, 7311 - First abutting wall, 7312 - Second abutting wall, 732 - Nut, 740 - Fastener, 750 - Gasket;

[0076] 800 - Corridor integrated module, 810 - Floor, 820 - Ceiling, 830 - Air duct, 831 - Air outlet, 840 - Bus duct;

[0077] 900 - Stair environmental control integrated module, 910 - Environmental control compartment, 911 - Air - conditioning equipment, 920 - Stairwell compartment, 921 - Stair;

[0078] R - Unit module, R1 - Electrical equipment module, R2 - Corridor module, R3 - Transformer module;

[0079] M1 - First module;

[0080] M2 - Second module;

[0081] K1 - Lower - layer module;

[0082] K2 - Upper - layer module;

[0083] W1 - Depth direction of the cabinet; W2 - Width direction of the cabinet;

[0084] H - Dividing line between the upper - layer module and the lower - layer module.

[0085] S - Section line between modules in the same - layer prefabricated cabin. Detailed implementation mode

[0086] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts belong to the scope of protection of the present application.

[0087] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "center", "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 application and simplifying the description, 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 thus should not be construed as a limitation to the present application.

[0088] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0089] In the description of the present application, it should be noted that, unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application may be understood according to specific circumstances.

[0090] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0091] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not in itself indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0092] [Transformer-integrated substation, modular prefabricated cabin]

[0093] The substation in this embodiment includes one or more prefabricated cabins, and the prefabricated cabin is a modular prefabricated cabin. The prefabricated cabin can be one layer, Figure 2 as shown; it can also be multiple layers, such as Figure 3 and Figure 4 shown, Figure 3 and Figure 4 are two different forms of three-layer layout methods.

[0094] Each layer of the prefabricated cabin is provided with corresponding functional modules according to functional requirements. The functional modules include a transformer module, an electrical equipment module, and an auxiliary function module.

[0095] Such as Figure 1 the prefabricated cabin shown includes a transformer module R3, an electrical equipment module R1, and an auxiliary function module, Figure 6 the prefabricated cabin shown only includes an electrical equipment module and an auxiliary function module.

[0096] The transformer module, the electrical equipment module, and the auxiliary function module are divided according to functions. Each functional module is spliced in the horizontal direction of each layer, and the transformer module is arranged beside the electrical equipment module and the auxiliary function module.

[0097] Each functional module (including the transformer module, the electrical equipment module, and the auxiliary function module) is prefabricated and wired in the factory respectively, and each is used as an independent transportation and installation unit, and is installed by means of top hoisting.

[0098] Referring to Figure 1 , the transformer module R3 includes a transformer device 21 and a transformer cabin 22, and the transformer device 21 is arranged in the transformer cabin 22.

[0099] The electrical equipment module is the core module of the prefabricated cabin, and it integrates the main electrical equipment of the substation, such as high-voltage equipment, medium-voltage equipment, low-voltage equipment, secondary equipment, bus bridges, etc.

[0100] The electrical equipment module can be a high-voltage equipment module, a medium-voltage equipment module, a low-voltage equipment module, a secondary equipment module, etc.

[0101] The auxiliary function module is a non-core module of the prefabricated cabin, and it integrates the auxiliary equipment and functions of the substation, such as corridors, stairs, lighting, air conditioning, air ducts, floors, wall panels, ceilings, etc.

[0102] The auxiliary function module can be a corridor module, a stair module, an environmental control module, etc.

[0103] The transformer module, electrical equipment module, and auxiliary function module can be arbitrarily combined and arranged according to user requirements.

[0104] One form of the electrical equipment module in this application only includes electrical equipment and does not include other auxiliary function modules such as corridors. Another form includes electrical equipment and corridor modules. Their common feature is that the electrical equipment is highly integrated in the same module cabin, and prefabrication and wiring are completed in the factory. The sound production quality inspection mechanism inside the factory effectively guarantees the product quality and avoids the technical problems of large on-site wiring workload and difficult wiring quality control in the prior art.

[0105] Similarly, the auxiliary function module can highly integrate the structures that realize the auxiliary functions in the same module cabin, and complete prefabrication and wiring in the factory.

[0106] The settings of the transformer module, the core electrical equipment module, and the non-core auxiliary function module can bring the following beneficial effects:

[0107] The traditional prefabricated cabin segmentation method is in the shape of a Chinese character "mu". Taking Figure 5 one of the layout methods of the single-layer prefabricated cabin shown as an example for "mu" segmentation, among the multiple modules formed by the segmentation, except for the unit module R on the side only including corridor 11, each of the other unit modules R includes electrical equipment 200 and corridor 11. The "mu" segmentation method makes these electrical equipment in different segmented modules, resulting in the fact that the primary and secondary connections between the equipment can only be completed after on-site cabin splicing. The on-site workload is large, the equipment integration degree is not high, and the quality problems are difficult to control.

[0108] However, this application adopts a brand-new form of division according to function modules. Referring to Figure 6 , each row of corridor 11 is divided into an independent corridor module R2, and each row of electrical equipment 200 is divided into an independent electrical equipment module R1, so that the electrical equipment 200 is highly integrated in the same electrical equipment module R1. First, complete the production and assembly of each electrical equipment module R1 and corridor module R2 in the factory, and then transport them to the customer site for splicing with the unit module as the transportation unit, which greatly reduces the workload at the customer site and improves the on-site assembly efficiency.

[0109] Figure 6 Only one specific layout method of the prefabricated cabin containing electrical equipment 200 and corridor 11 is shown. In actual applications, according to customer requirements, different functional electrical equipment modules (such as high-voltage electrical equipment modules, medium-voltage electrical equipment modules, low-voltage electrical equipment modules, etc.), auxiliary function modules (such as corridor modules, stair modules, environmental control modules, etc.), and transformer modules can be arbitrarily combined to achieve the best effects of segmentation, factory prefabrication, transportation cost, and on-site construction.

[0110] The present application standardizes the interfaces between modules, standardizes and modularizes the module sizes, so that the modules have strong interchangeability and the feasibility of factory prefabrication.

[0111] The dimensions of each transformer module, each electrical equipment module and each auxiliary function module are standard modular dimensions. By setting the standard modular dimensions, the modules can be easily and quickly increased in number to meet the needs of substation equipment expansion and increased operation and maintenance space, while reducing the types of modules.

[0112] Standard module size = minimum size of each functional module + integer multiple of reference module size. Reference module size is a preset fixed value. Reference module is calculated based on the actual size of prefabricated cabin and substation.

[0113] The introduction of standard modules and benchmark modules makes the cabin shape standardized to the greatest extent possible, thus realizing the prefabricated production of modules.

[0114] In some embodiments of the present application, a plurality of symmetrically arranged hoisting parts are provided on the top of each transformer module, each electrical equipment module and each auxiliary function module, so that the top hoisting installation method of each module is also realized.

[0115] In accordance with the top hoisting method, positioning structures 300 are provided at the bottom and top of each functional module as required, and two adjacent functional modules on the left and right are horizontally positioned and spliced ​​through the positioning structures 300, and two adjacent functional modules on the top and bottom are vertically positioned and spliced ​​through the positioning structures 300. This improves the efficiency and reliability of on-site installation. The specific structure of the positioning structure 300 will be described in detail below.

[0116] In some embodiments of the present application, each module (transformer module, electrical equipment module and auxiliary function module) includes a cabin 100, and the cabin 100 is composed of a base 110 and a top beam 120 to form a cabin frame. According to different requirements of the modules, support structures of different types and structures are provided between the base 110 and the top beam 120.

[0117] [Electrical equipment core module, support frame tube structure]

[0118] For the specific structure of the electrical device module, in some embodiments of the present application, refer to Figure 7 The electrical equipment module includes a cabin 100 and an electrical equipment 200 disposed in the cabin 100 .

[0119] The cabin 100 is a frame structure assembled by welding profiles and / or plates. A vertical support frame tube structure 130 is provided in the cabin 100. At least one of a bus channel 141, a cable channel 142 and a pressure relief channel 143 is provided in the internal space surrounded by the support frame tube structure 130.

[0120] The electrical equipment module composed of the cabin body 100 and the electrical equipment 200 is transported to the customer site as an independent transportation unit and spliced with other electrical equipment modules or auxiliary function modules.

[0121] The support frame barrel structure 130 not only improves the overall structural strength of the cabin body 100, but also integrates the functions of wire routing and pressure relief, which helps to improve the internal structural compactness of the cabin body 100 and further reduces the floor area of the cabin body.

[0122] The busbar channel 141, the cable channel 142 and the pressure relief channel 143 are reasonably selected and configured according to the type of electrical equipment 200 installed in the cabin body 100. For example, the pressure relief channel 143 is only required to be configured when medium-voltage equipment is installed in the cabin body 100.

[0123] It should be noted that the entire internal space surrounded by the support frame barrel structure 130 can be regarded as a cable channel.

[0124] When the prefabricated cabin is in a multi-layer layout, the installation spaces on the support frame barrel structures 130 of the upper and lower layers are connected, which is convenient for wire routing of electrical equipment between the upper and lower cabin bodies, is more conducive to the assembly of the modular prefabricated cabin, and improves the production and assembly efficiency.

[0125] According to the length of the cabin body 100, multiple support frame barrel structures 130 can be arranged along the length direction of the cabin body 100 to meet the strength support requirements. Figure 7 In the shown structure, there are three support frame barrel structures 130, and the electrical equipment 200 is arranged between two adjacent support frame barrel structures 130.

[0126] For the specific structure of the cabin body 100, in some embodiments of the present application, referring to Figure 7 , the support frame barrel structure 130 is connected between the base 110 and the top beam 120 of the cabin body, and the electrical equipment 200 is slidably arranged on the base 110.

[0127] Taking medium and low voltage electrical equipment as an example, referring to Figure 6 , the dimension W1 of the electrical equipment 200 in the cabinet depth direction is generally fixed, while the cabinet width dimension W2 of the electrical equipment 200 is variable, and the electrical equipment 200 can slide along the cabinet width W2 direction to realize the position adjustment of each electrical equipment 200, which is convenient for installation.

[0128] For the specific structure of the sliding installation of the electrical equipment, in some embodiments of the present application, referring to Figure 10, a slide rail 410 is provided on the base 110. The slide rail 410 extends along the cabinet width W2 direction of the electrical equipment. The bottom of the cabinet body of the electrical equipment 200 is slidably arranged in the slide rail 410 through a plastic wing nut 420. By sliding the plastic wing nut 420 along the slide rail 410, the sliding adjustment of the electrical equipment 200 is realized.

[0129] The top beam 120 is for integrated ceiling decoration (not shown). The ceiling decoration includes an installation beam and a ceiling decorative board. The installation beam is fixed to the frame of the top beam 120. The ceiling decorative board adopts a modular design. It is first assembled into pieces and then integrally installed on the installation beam, so as to be integrally integrated onto the top beam 120 to form the ceiling decoration.

[0130] Regarding the specific structure of the support frame tube structure 130, in some specific embodiments of the present application, the support frame tube structure 130 and the base 110 can be fixedly connected. At this time, the bottom of the support frame tube structure 130 is fixedly connected to the base 110 through bolts.

[0131] The support frame tube structure 130 and the base 110 can also be slidably connected (this connection method is not shown). At this time, a chute is provided on the base 110, and the bottom of the support frame tube structure 130 can be slidably arranged in the chute through a plastic wing nut.

[0132] The sliding connection method is convenient for adjusting the position of the support frame tube structure 130 to match electrical equipment of different sizes.

[0133] Generally, the support frame tube structures 130 arranged at both ends of the electrical equipment module generally adopt a fixed connection method, while the support frame tube structure 130 located in the middle can adopt a sliding connection method.

[0134] In some embodiments of the present application, referring to Figure 8 and Figure 9 , the support frame tube structure 130 includes two relatively arranged support wall frames 131. Each support wall frame 131 is welded or assembled by metal profiles. A connecting beam 132 is arranged between the two support wall frames 131. The bottom of the support frame wall 131 is connected to the base 110, and the top of the support frame wall 131 is connected to the top beam 120.

[0135] The busbar channel 141, the cable channel 142, and the pressure relief channel 143 are all fixedly arranged inside the support wall frame 131.

[0136] Furthermore, the connecting beam 132 includes a first connecting beam 1321 and a second connecting beam 1322. The first connecting beam 1321 is arranged at the top corner positions of the two support wall frames 131, presenting an L-shaped structure, which plays a role in connecting and fixing both the top and the side of the support wall frame 131. A plurality of second connecting beams 1322 are arranged between the two first connecting beams 1321.

[0137] The first connecting beam 1321 and the second connecting beam 1322 are formed by sheet metal bending or profile welding, and are fixed to the support wall frame 131 by bolts or welding.

[0138] Furthermore, angle support plates 133 are welded between the horizontal beams and vertical beams constituting the support wall frame 131 to further improve the structural strength.

[0139] Furthermore, a plurality of symmetrically distributed lifting rings 190 are provided at the top of the support wall frame 131 to facilitate top lifting by lifting tools and facilitate installation.

[0140] Furthermore, a first side sealing plate 161 is provided on the outer side of the support frame wall 131 to block the internal installation space of the support frame barrel structure 130.

[0141] The first side sealing plate 161 is made of metal sheet metal by painting or spraying, and is fixed to the outer side of the support wall frame 131 by bolts or welding.

[0142] Furthermore, a detachable sealing plate 180 is provided on the first side sealing plate 161, and the detachable sealing plate 180 is used to block the bus duct 141 and the pressure relief duct 143. The one facing the bus duct 141 is defined as the first detachable sealing plate 181, and the one facing the pressure relief duct 143 is defined as the second detachable sealing plate 182.

[0143] The detachable sealing plate 180 is also made of metal sheet metal or spraying, and is installed on the support wall frame 131 by bolts.

[0144] When the electrical equipment module does not require bus routing, the bus duct 141 is blocked by the first detachable sealing plate 181; when the cabin 100 requires bus routing, the first detachable sealing plate 181 is removed.

[0145] When the electrical equipment module does not require pressure relief, the pressure relief duct 143 is blocked by the second detachable sealing plate 182; when the cabin 100 requires pressure relief, the second detachable sealing plate 182 is removed.

[0146] Furthermore, a second side sealing plate 162 and a door body 170 are arranged up and down on the sides of the two support wall frames 131.

[0147] The second side sealing plate 162 is made of metal sheet metal by painting or spraying, and is fixed to the support wall frame 131 by bolts or welding for connecting the two support wall frames 131.

[0148] An opening 1621 communicating with the pressure relief duct 143 is provided on the second side sealing plate 162 to achieve pressure relief.

[0149] The door body 170 can be in the form of a single-leaf door or a double-leaf door, which is convenient for operators to enter the inside of the support frame structure 130 for line maintenance and the like.

[0150] Furthermore, a plurality of cable brackets 150 are provided on the inner side of the support wall frame 131, and fixing holes 151 for fixing cables are provided on the cable brackets 150.

[0151] The cable brackets 150 are made of metal profiles or welded by hot plates. Flanges (not marked) are welded on the end sides of the profiles, and the flanges are fixed to the support wall frame 131 by bolts or welding.

[0152] The number and installation positions of the cable brackets 150 can be specifically set according to the wiring requirements.

[0153] Furthermore, a wiring groove 142 is provided on the inner side of the support wall frame 131. The wiring groove 142 is formed by bending a metal plate, and its surface can be treated by painting or plastic spraying. It includes a groove body and a groove cover plate. The groove body and the groove cover are fixed by bolts. The entire wiring groove 142 can be fixed to the support wall frame 131 by bolts or welding.

[0154] A wire climbing frame is designed inside the groove body of the wiring groove for fixing secondary cables.

[0155] The number and installation positions of the wiring grooves 142 can be specifically set according to the wiring requirements.

[0156] The cable brackets 150 and the wiring grooves 142 are used for the wiring of different types of wires.

[0157] Regarding the specific structure of the busbar channel 141, in some embodiments of the present application, the busbar channel 141 is assembled by busbar enclosures formed by bending stainless steel plates, steel plates, aluminum plates, etc. The busbar enclosures are fixed to each other and to the support wall frame 131 by bolts.

[0158] Furthermore, an insulator bracket (not shown) is provided inside the busbar channel 141 for installing and fixing the insulators of the copper bars.

[0159] The busbar channel 141 can realize the through connection of the copper bars of the switchgear equipment on both sides of the support structure and has an anti-eddy current function.

[0160] Regarding the specific structure of the pressure relief channel 143, in some embodiments of the present application, the pressure relief channel 143 is assembled by pressure relief enclosures formed by bending metal sheet metals. The pressure relief enclosures are fixed to each other and to the support wall frame 131 by bolts.

[0161] The pressure relief channel 143 can penetrate the pressure relief channels of the switchgear on both sides of the support frame structure 130 and export the cabinet pressure relief to the outside of the cabin through the support structure.

[0162] [Auxiliary function non-core module]

[0163] The auxiliary function module can integrate various functions inside according to user requirements. This application provides two forms of auxiliary function modules.

[0164] The first type of auxiliary function module is the corridor integration module 800. Refer to Figure 25 , which includes a base 110 and a top beam 120. A floor 810 is provided on the base 110, and a ceiling 820 is provided below the top beam 120. An air duct 830 and / or a busbar bridge 840 are provided between the ceiling 820 and the top beam 120. The air duct 830 is connected to an air outlet 831 through a pipe to supply conditioned air to the indoor space.

[0165] In the structure as Figure 6 shown, the corridor module R2 is the corridor integration module 800, which is arranged between two electrical equipment modules R1 and at one end of the electrical equipment module R1 to form a corridor space, providing space for the maintenance of the electrical equipment 200.

[0166] Of course, in other embodiments, the installation position and direction of the corridor integration module 800 can be flexibly arranged according to requirements.

[0167] More specifically, the corridor integration module 800 can be integral or split.

[0168] The integral corridor integration module means that a support upright is provided between the base 110 and the top beam 120 of the corridor integration module. The base 110, top beam 120, support columns, ceiling 820, air duct 830, busbar bridge 840, etc. are prefabricated and wired in the factory first, and then transported to the customer site as a complete transportation unit, and then spliced with other modules, greatly shortening the on-site installation time and improving the on-site installation efficiency.

[0169] The split corridor integration module means that there is no support upright connecting the base 110 and the top beam 120 of the corridor integration module. During the factory prefabrication stage, the floor 810 is first assembled with the base 110 to form an independent unit, and then the top structures such as the top beam 120, ceiling 820, air duct 830, busbar bridge 840, etc. are assembled to form another independent unit. Then, these two parts of the unit are transported in a multi-layer stacking manner, saving transportation vehicles and transportation costs. After arriving at the customer site, the above two independent units are spliced with other surrounding modules by means of bolt piercing, etc., and then the on-site installation of the split corridor integration module is completed.

[0170] The second type of auxiliary function module is the stair environmental control integration module 900. Refer to Figure 26, which also forms a cabin structure with a base, a top beam, and a circumferential support frame. Inside it, an environmental control compartment 910 and a stairwell compartment 920 are separated by a partition structure 600. An air conditioning device 911 is provided in the environmental control compartment 910, and a stair 921 is provided in the stairwell compartment 920.

[0171] During the factory prefabrication stage of this module, first integrate the partition structure 600, the air conditioning device 911, the stair 921, etc. into the cabin, then transport the whole module to the site, and then splice it with other modules.

[0172] [Splicing and positioning structure]

[0173] For the specific splicing and positioning structure of each module, in some embodiments of the present application, each module is spliced horizontally through a positioning structure 300. A positioning structure 300 is provided at the bottom of each module, and a lifting part 500 is provided at the top of each module.

[0174] The lifting part 500 can be a lifting lug / and or a lifting ring, and the lifting points are symmetrically distributed to ensure the balance of each module during lifting. At the same time, the present application also innovatively introduces auxiliary lifting points to further improve the lifting balance by adding auxiliary lifting points during lifting.

[0175] For the specific structure of the positioning structure 300, in some embodiments of the present application, refer to Figures 11 to 12 , where Figure 11 In the shown structure, two electrical equipment modules can be spliced, or an electrical equipment module can be spliced with other auxiliary function modules, or a transformer module can be spliced with an electrical equipment module or an auxiliary function module, etc. For ease of description, the two modules to be spliced are defined as the first module M1 and the second module M2.

[0176] The positioning structure 300 includes a positioning member 310 and a guiding member 320. A plurality of guiding columns 313 are provided on the positioning member 310, a guiding hole 321 is provided on the guiding member 320, and the guiding member 320 is provided at the bottom of the cabin 100.

[0177] During splicing, first install the positioning member 310 on one of the modules to be spliced (such as the first module M1), and make one of the guiding columns 313 pass through the guiding hole 321 of the corresponding module (i.e., the first module M1). Then, insert the guiding holes 321 on the remaining modules to be spliced (i.e., the second module M2) corresponding to the remaining guiding columns 313, and cooperate with the top lifting, then the quick splicing of two adjacent modules can be easily completed.

[0178] Specifically, the positioning member 310 includes a substrate 311, a connecting portion 312, and positioning columns 313. The connecting portion 312 is vertically disposed at the middle position of the substrate 311. A first connecting hole 314 is formed on the connecting portion 312 for fixing the entire positioning member 310 to the bottom of the cabin. A plurality of positioning columns 313 are perpendicularly disposed on the substrate 311, and the plurality of positioning columns 313 are respectively located on both sides of the connecting portion 312 for positioning and connecting adjacent cabins.

[0179] For the convenience of processing, the substrate 311, the connecting portion 312, and the positioning columns 313 are connected by welding. Of course, other assembly forms such as bolt connection can also be adopted. Here, only one implementation method is proposed and no specific limitation is made.

[0180] The guiding member 320 is in a plate-like structure and is horizontally formed at the bottom of the module cabin. A guiding hole 321 is formed on the guiding member 320. During the positioning process, the positioning column 313 penetrates into the corresponding guiding hole 321 to realize the splicing between adjacent modules.

[0181] A second connecting hole 322 is formed on the bottom side wall of the module cabin. In the installed state, the second connecting hole 322 corresponds to the first connecting hole 314. The bolt 330 passes through the first connecting hole 314 and the second connecting hole 322 to fix the positioning member 310 on the module cabin.

[0182] Figures 11 to 13 In the shown structure, two positioning columns 313 are provided on the positioning member for splicing between two adjacent modules.

[0183] If four adjacent modules need to be spliced in a cross shape, four positioning columns 313 are required for the positioning member 310. Refer to Figure 13 , and the installation process can refer to the splicing process of two modules and will not be elaborated here.

[0184] For the splicing of upper and lower layer modules, refer to Figure 15 , install the positioning member 310 on the top of the K1 cabin of the lower layer module, install the guiding member 320 on the bottom of the K2 cabin of the upper layer module, and realize the rapid splicing of the upper and lower layer modules through the positioning of the positioning member 310 and the guiding member 320.

[0185] [Upper and lower stacked fixed structure]

[0186] When the upper and lower modules are stacked, they are positioned and fixed through the fixed structure as shown in Figures 22 to 24 .

[0187] Specifically, the fixed structure 700 includes a first fixed beam 710, a second fixed beam 720, an anti-rotation fixing portion 730, and a fastener 740.

[0188] The first fixing beam 710 is fixedly arranged on the top of the lower module K1, and a plurality of first fixing holes (not labeled) are arranged along the length direction of the first fixing beam 710.

[0189] The second fixing beam 720 is fixedly arranged on the bottom side of the upper module K2, and a plurality of second fixing holes (not labeled) are arranged along the length direction of the second fixing beam 720.

[0190] The anti-rotation fixing part 730 includes an anti-rotation part 731 and a nut 732. The anti-rotation part 731 is an L-shaped structure, which has a first abutting wall 7311 abutting against the top surface of the second fixing beam 720 and a second abutting wall 7312 abutting against the side surface of the second fixing beam 720. The nut 732 is arranged on the first abutting wall 7311.

[0191] During installation, place the upper module K2 on top of the lower module K1, place the anti-rotation fixing part 730 at the position of the fixing point to be fixed, and then pass the fastener 740 from bottom to top through the first fixing hole, the second fixing hole and the nut 732, so as to realize the fixation of the upper module K2 and the lower module K1.

[0192] The anti-rotation fixing part 730 is a key component of the fixing structure 700. There is no need to separately design a fixing point to ensure the correspondence of the upper and lower fixing points. The number of fixing points can be increased or decreased according to actual needs, avoiding the problem of misalignment of the upper and lower fixing holes caused by factors such as errors, and improving the installation efficiency.

[0193] Both the first fixing hole and the second fixing hole are oblong holes or long strip holes, and the spacing distance between adjacent two first fixing holes and the spacing distance between adjacent two second fixing holes are both fixed modular dimensions, which is convenient for the alignment and connection of the upper and lower fixing holes when stacking the upper and lower modules.

[0194] The first fixing beam 710 is fixedly arranged on the top beam 120 on the lower module K1 by welding or bolts, and the second fixing beam 720 is fixedly arranged on the bottom side of the base 110 on the upper module K2 by welding or bolts.

[0195] In this embodiment, the first fixing beam 710 is an inverted U-shaped structure, which has high structural strength, and the first fixing hole is opened at the top of the first fixing beam 710.

[0196] In this embodiment, the second fixing beam 720 is a C-shaped slide rail, and one side surface of the C-shaped slide rail is fixedly connected to the bottom side surface of the upper module (that is, the side surface of the base 110).

[0197] When the anti-rotation fixing part 730 is placed on the second fixing beam 720, the first abutting wall 7311 abuts against the top surface of the C-shaped slide rail, and the second abutting wall 7312 abuts against the other side surface of the C-shaped slide rail, playing an anti-rotation role and improving the connection reliability.

[0198] Further, arc-shaped bending portions 721 that bend inwardly towards the inside of the C-shaped slide rail are respectively provided at the bottoms of the two sides of the C-shaped slide rail. When the upper module K2 is placed on top of the lower module K1, the bottom of the arc-shaped bending portion 721 abuts against the first fixing beam 710. When the upper cabin needs to adjust its position, the arc-shaped structure facilitates movement along the first fixing beam 710.

[0199] The nut 732 is a riveted nut, which is riveted to the top of the first abutting wall 7311 and forms an integral body with the anti-rotation member 731.

[0200] The fastener 740 is a bolt. A gasket 750 is provided between the fastener 740 and the first fixing beam 710 to reduce local stress and improve the structural reliability.

[0201] [Partition structure]

[0202] In some embodiments of the present application, a partition structure 600 is provided inside each prefabricated cabin. The partition structure 600 can be arranged along the length or width direction of the prefabricated cabin, and can be flexibly arranged as needed to achieve the flexibility of the partitioned compartments.

[0203] The partition structure 600 is slidably arranged to facilitate adjusting the position of the partition structure 600.

[0204] The partition structure 600 includes a door-type partition and / or a support-type partition 630.

[0205] The door-type partition serves to partition compartments, provide passage, and offer a certain degree of support.

[0206] The support-type partition 630 serves to partition compartments and provide support.

[0207] The partition structure 600 in the present application has multiple types, realizing multiple functions. And multiple types of partitions can be flexibly combined and used as needed inside the cabin. Meanwhile, in conjunction with the flexibility of the installation position, the versatility and usage flexibility of the partition structure 600 can be greatly improved, and it helps to improve the installation efficiency.

[0208] Regarding the sliding installation method of the partition structure 600, in some embodiments of the present application, refer to Figure 21 , slide rails 410 are respectively provided on the base 110 and the top beam 120 of the module. The bottom of the partition structure 600 is slidably connected to the slide rail 410 through a plastic wing nut 420, and the top of the partition structure 600 is slidably connected to the slide rail 410 through a plastic wing nut 420.

[0209] The slide rail 410 is made of C-shaped steel and is welded or bolt-fixed at appropriate positions on the base 110 and the top beam 120 according to actual needs.

[0210] Both the bottom and the top of the partition structure 600 are provided with mounting holes, and it is installed on the slide rail 410 through bolts and plastic wing nuts 420. By sliding the plastic wing nuts 420 along the slide rail 410, the sliding of the partition structure 600 is realized.

[0211] After the partition structure 600 slides to a proper position, it can be fixed to the slide rail 410 through angle steel and bolts at the side end of the partition structure 600 to realize the final fixation of the position.

[0212] Regarding the specific structure of the door type partition, in some embodiments of the present application, referring to Figure 16 and Figure 17 , the door type partition includes a pair of opening escape door partitions 610. The pair of opening escape door partitions 610 includes a first door frame 611. A pair of opening doors 612 are provided on the first door frame 611, and it also includes auxiliary accessories such as an escape lock, a door shaft, a lock rod, etc.

[0213] The bottom of the first door frame 611 is slidably connected to the base 110, and the top of the first door frame 611 is slidably connected to the top beam 120 to realize the sliding installation of the opening escape door partition 610.

[0214] In Figure 16 the shown structure, the pair of opening escape door partitions 610 are provided in two and are oppositely arranged on two side support frames in the length direction of the module.

[0215] In some embodiments of the present application, referring to Figure 16 and Figure 18 , the door type partition further includes a two-way single-opening door closer door partition 620. The two-way single-opening door closer door partition 620 includes a second door frame 621. A two-way single-opening door closer door 622 is provided on the second door frame 621, and it also includes auxiliary accessories such as a door closer, a door shaft, etc.

[0216] The bottom of the second door frame 621 is slidably connected to the base 110, and the top of the second door frame 621 is slidably connected to the top beam 120 to realize the sliding installation of the two-way single-opening door closer door partition 620.

[0217] In Figure 16 the shown structure, the two-way single-opening door closer door partition 620 is arranged along the width direction of the cabin body, and the internal space of the cabin body is divided into two left and right compartments.

[0218] Regarding the specific structure of the support partition 630, in some embodiments of the present application, the support partition 630 is a support frame 631 formed by profiles and / or plates through welding and / or assembly, meeting the requirements of support strength.

[0219] The bottom of the support frame 631 is slidably connected to the base 110, and the top of the support frame 631 is slidably connected to the top beam 120 to realize the sliding installation of the support frame 631.

[0220] The outer side of the support frame 631 can be provided with fireproof materials and decorative surfaces to improve fireproof performance and external aesthetics.

[0221] In Figure 19 and Figure 20 In the structure shown, the support partition 630 is arranged along the length direction of the cabin body, and a lifting part 500 for hoisting is arranged at the top of the support frame 631, which is convenient for hoisting operations.

[0222] [Installation method of modular prefabricated cabin]

[0223] Based on the prefabricated cabin modularly divided according to functions and the installation method of top lifting and bottom positioning, the installation method of the modular prefabricated cabin in this application is as follows:

[0224] Complete the prefabrication and wiring of each module (including transformer module, electrical equipment module and auxiliary function module) in the factory;

[0225] Transport each module to the customer site as an independent transportation unit;

[0226] During on-site installation:

[0227] Select a certain module (such as the first module at the end) in the first-layer prefabricated cabin as the first installation module I, and set positioning structures 300 at one end and / or both ends of the bottom of the first installation module I;

[0228] Fix the first installation module I to the prefabricated cabin foundation;

[0229] Install a positioning structure 300 at the bottom of one end of the second installation module I, and install the other end of the second installation module I on the positioning structure 300 adjacent to it and arranged on the first installation module I to achieve the horizontal splicing of the first installation module I and the second installation module I;

[0230] And so on, complete the horizontal splicing of all modules in the first-layer prefabricated cabin, and the last installed module does not need to install a positioning structure 300;

[0231] Select a certain module (such as the first module at the end) in the Nth layer (N = 2, 3,...) prefabricated cabin as the first installation module N, install the positioning structure 300 on the top of the first layer, and set positioning structures 300 at one end and / or both ends of the bottom of the first installation module N;

[0232] Fix the first installation module N to the top of the first-layer prefabricated cabin;

[0233] Install the positioning structure 300 at the bottom of one end of the second installation module N, and install the other end of the second installation module N on the positioning structure 300 adjacent to it and provided on the first installation module N, so as to realize the splicing of the first installation module N and the second installation module N in the horizontal direction;

[0234] And so on, complete the horizontal splicing of all modules in the Nth-layer prefabricated cabin, and the last installed module does not need to install the positioning structure 300.

[0235] In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0236] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A transformer - integrated substation, characterized in that, it includes multiple layers of prefabricated cabins, and corresponding functional modules are arranged in each layer of the prefabricated cabin according to functional requirements. The functional modules include a transformer module, an electrical equipment module, and an auxiliary function module; the transformer module, the electrical equipment module, and the auxiliary function module are divided into modules according to functions. Each functional module is spliced in the horizontal direction of each layer, and the transformer module is arranged beside the electrical equipment module and the auxiliary function module; each functional module is prefabricated and wired in the factory respectively, and each is used as an independent transportation and installation unit, and is installed by means of top - lifting; a support frame - barrel structure and electrical equipment are arranged in the cabin body of the electrical equipment module. At least one of a bus duct, a cable duct, and a pressure - relief duct is arranged in the internal space surrounded by the support frame - barrel structure for the electrical equipment to route wires and relieve pressure; the electrical equipment and the support frame - barrel structure are slidably arranged on the base of the cabin body, and the installation spaces on the support frame - barrel structures of the upper and lower layers are communicated; positioning structures are arranged at the bottom and top of the module as required. Two adjacent modules on the left and right are horizontally positioned and spliced through the positioning structure, and two adjacent modules on the upper and lower sides are vertically positioned and spliced through the positioning structure; each module is spliced in the horizontal direction through a positioning structure. The positioning structure includes a positioning part and a guiding part. The positioning part is provided with multiple guiding columns, the guiding part is provided with guiding holes, and the guiding part is arranged at the bottom of the cabin body; during splicing, first install the positioning part on one of the modules to be spliced, and make one of the guiding columns pass through the guiding hole on the corresponding module, and then insert the guiding holes on the remaining modules to be spliced corresponding to the remaining guiding columns. With the cooperation of top - lifting, the quick splicing of two adjacent modules can be easily completed; when the upper and lower modules are stacked, they are positioned and fixed through a fixing structure. The fixing structure includes a first fixing beam, a second fixing beam, an anti - rotation fixing part, and a fastener; the first fixing beam is fixedly arranged on the top of the lower - layer module, and multiple first fixing holes are arranged along the length direction of the first fixing beam; the second fixing beam is fixedly arranged on the bottom side of the upper - layer module, and multiple second fixing holes are arranged along the length direction of the second fixing beam; the anti - rotation fixing part includes an anti - rotation piece and a nut. The anti - rotation piece is an L - shaped structure, which has a first abutting wall abutting against the top surface of the second fixing beam and a second abutting wall abutting against the side surface of the second fixing beam, and the nut is arranged on the first abutting wall; during installation, place the upper - layer module on the top of the lower - layer module, place the anti - rotation fixing part at the position of the fixing point to be fixed, and then pass the fastener from bottom to top through the first fixing hole, the second fixing hole, and the nut, so as to realize the fixing of the upper - layer module and the lower - layer module.

2. The transformer - integrated substation according to claim 1, characterized in that, Select a certain functional module in the first - layer prefabricated cabin as the first installation module Ⅰ, and set positioning structures at one or both ends of the bottom of the first installation module Ⅰ; Fix the first installation module Ⅰ to the prefabricated cabin foundation; Install a positioning structure at the bottom of one end of the second installation module Ⅰ, and install the other end of the second installation module Ⅰ on the positioning structure adjacent to it and provided on the first installation module Ⅰ, to achieve the horizontal splicing of the first installation module Ⅰ and the second installation module Ⅰ; And so on, complete the horizontal splicing of all modules in the first - layer prefabricated cabin, and the last - installed module does not need to install a positioning structure; Select a certain functional module in the N - th layer (N = 2, 3,...) of the prefabricated cabin as the first installation module N, install the positioning structure on the top of the (N - 1) - th layer, and set positioning structures at one or both ends of the bottom of the first installation module N; Fix the first installation module N to the top of the (N - 1) - th layer prefabricated cabin; Install a positioning structure at the bottom of one end of the second installation module N, and install the other end of the second installation module N on the positioning structure adjacent to it and provided on the first installation module N, to achieve the horizontal splicing of the first installation module N and the second installation module N; And so on, complete the horizontal splicing of all functional modules in the N - th layer prefabricated cabin, and the last - installed functional module does not need to install a positioning structure.

3. The transformer - built substation according to claim 1, characterized in that, The size of each functional module is the standard modular size; The standard modular size = the minimum size in each functional module + an integer multiple of the reference modular size, and the reference modular size is a preset fixed value.

4. The transformer - built substation according to any one of claims 1 to 3, characterized in that, The transformer module includes a transformer device and a transformer cabin body, and the transformer device is arranged in the transformer cabin body.

5. The transformer - built substation according to any one of claims 1 to 3, characterized in that, The auxiliary functional module includes a corridor integration module, which has a floor at the bottom and a ceiling at the top, and an air duct and / or a busbar bridge are arranged in the space between the ceiling and the top beam of the corridor integration module.

6. The transformer - built substation according to any one of claims 1 to 3, characterized in that, The auxiliary functional module further includes a stair - environmental control integration module, which is internally divided into an environmental control compartment and a stair compartment by a partition structure. An air - conditioning device is arranged in the environmental control compartment, and a stair is arranged in the stair compartment.

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