Thermal insulation top cover assembly and box-type substation

Abstract

The embodiment of the utility model provides a heat preservation top cover assembly and a box-type substation, and relates to the technical field of substations. The heat preservation top cover assembly comprises a top cover body, a heat preservation and insulation layer, an installation piece and a fixing piece. Wherein the top cover main body is used for being connected with a box transformer substation body of the box-type substation, and the inner side surface of the top cover main body is connected with the mounting piece. The heat preservation and insulation layer is located inside the top cover body. The fixing piece is detachably connected with the mounting piece, and the heat preservation and insulation layer is pressed between the mounting piece and the fixing piece. According to the heat preservation top cover assembly provided by the embodiment of the utility model, the heat preservation and insulation layer is arranged on the inner side of the top cover main body, so that the heat preservation and insulation effect of the top of the box-type substation can be effectively improved, and the operation safety of internal components of the box-type substation body is improved. In addition, through detachable connection of the fixing piece and the mounting piece, the heat preservation and insulation layer is pressed between the mounting piece and the fixing piece, the heat preservation and insulation layer is fixed firmly, and disassembly and assembly of the heat preservation and insulation layer are very convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer substations, in particular to a thermal insulation top cover component and a box-type transformer substation. Background Art

[0002] A box-type substation (abbreviated as box-type substation) is a compact complete distribution device that combines high-voltage switchgear distribution transformers, low-voltage switchgear, electric energy metering equipment and reactive power compensation devices in one or several boxes according to a certain wiring scheme.

[0003] However, the top insulation effect of the box-type substation in the prior art is poor. Under the condition of long-term sunlight and being in a high-temperature area, the temperature inside the box rises quickly and is high during the day; condensation is easily formed at night, which poses a safety hazard when the internal components of the box-type substation are in operation. Utility Model Content

[0004] The utility model solves the technical problem that the top of the box-type substation in the prior art has poor thermal insulation effect, condensation is easily formed at night, and there are safety hazards when the internal components are running.

[0005] In order to solve the above problems, an embodiment of the utility model provides a thermal insulation top cover assembly and a box-type substation.

[0006] The embodiment of the utility model is achieved as follows:

[0007] In a first aspect, an embodiment of the utility model provides a thermal insulation top cover assembly, comprising a top cover body, a thermal insulation layer, a mounting member and a fixing member;

[0008] The top cover body is used to be connected to the box-type transformer body of the box-type transformer substation, and the inner side surface of the top cover body is connected to the mounting member;

[0009] The thermal insulation layer is located inside the top cover body;

[0010] The fixing member is detachably connected to the mounting member, and the thermal insulation layer is pressed between the mounting member and the fixing member.

[0011] The thermal insulation top cover assembly provided by the embodiment of the utility model can effectively improve the thermal insulation effect of the top of the box-type substation by arranging a thermal insulation layer on the inner side of the top cover body, so that condensation is not easily formed inside the box-type substation body at night, and the safety of the components inside the box-type substation body during operation is improved, so that the internal components are effectively protected. In addition, the thermal insulation layer is pressed between the mounting member and the fixing member by detachably connecting the fixing member and the mounting member, which not only fixes the thermal insulation layer firmly, but also makes it very easy to disassemble and assemble the thermal insulation layer.

[0012] Further, in an optional embodiment, the fixing member includes a bearing portion, a connecting portion and a fixing portion;

[0013] The bearing portion, the connecting portion and the fixing portion are sequentially connected to form a plate-like structure having a Z-shaped longitudinal section;

[0014] The fixing portion is detachably connected to the mounting member so that the thermal insulation layer is at least partially pressed between the bearing portion and the mounting member.

[0015] Further, in an optional embodiment, the fixing portion is provided with a first mounting hole, the mounting member is provided with a second mounting hole, and the first mounting hole and the second mounting hole are connected by self-drilling and self-tapping screws or rivets.

[0016] Further, in an optional embodiment, the top cover body includes a top cover plate and a top cover fixing member, and the top cover plate is provided with a bent portion bent downward;

[0017] The mounting member is connected to both the top cover plate and the bending portion;

[0018] The top cover fixing piece is connected to the inner side of the bending portion and is used to be connected to the box-type transformer body.

[0019] Further, in an optional embodiment, a distance H between the upper surface of the top cover fixing member and the bearing portion on a vertical plane is ≥35 mm.

[0020] Further, in an optional embodiment, a distance D between an end surface of the top cover fixing piece away from the bending portion and the connecting portion in a horizontal plane is ≥30 mm.

[0021] Further, in an optional embodiment, the mounting member includes a first side plate, a mounting plate and a second side plate;

[0022] The first side plate, the mounting plate and the second side plate are sequentially connected to form a plate-like structure with a U-shaped longitudinal section;

[0023] One end of the first side plate away from the mounting plate is welded to the top cover plate, and the second side plate is attached to and welded to the bent portion;

[0024] The mounting plate is attached to the fixing portion and is detachably connected thereto.

[0025] Further, in an optional embodiment, the roof body further includes a supporting longitudinal beam and a reinforcing cross beam;

[0026] The supporting longitudinal beam and the reinforcing cross beam are both connected to the inner side surface of the top cover plate, the supporting longitudinal beam is arranged at the middle position of the top cover plate, and one end of the reinforcing cross beam is connected to the supporting longitudinal beam;

[0027] The supporting longitudinal beam is detachably connected to the thermal insulation layer.

[0028] Further, in an optional embodiment, the number of the fixing parts and the number of the mounting parts each include two, and the two ends of the thermal insulation layer are respectively fixed to the corresponding mounting parts through the fixing parts.

[0029] In a second aspect, the utility model provides a box-type substation, comprising a box-type transformer body and a heat-insulating top cover assembly as described in any one of the aforementioned embodiments, the heat-insulating top cover assembly comprising a top cover body, a heat-insulating layer, a mounting member and a fixing member; the top cover body is connected to the box-type transformer body. The inner side surface of the top cover body is connected to the mounting member; the heat-insulating layer is located on the inner side of the top cover body; the fixing member is detachably connected to the mounting member, and the heat-insulating layer is pressed between the mounting member and the fixing member.

[0030] The technical effect of the box-type substation provided by the embodiment of the utility model is similar to the technical effect of the thermal insulation top cover assembly provided by the embodiment of the utility model. By arranging a thermal insulation layer on the inner side of the top cover body, the thermal insulation effect of the top of the box-type substation can be effectively improved, so that condensation is not easily formed inside the box-type substation body at night, and the safety of the components inside the box-type substation body during operation is improved, so that the internal components are effectively protected. In addition, the fixing part and the mounting part are detachably connected to realize the thermal insulation layer being pressed between the mounting part and the fixing part, which not only fixes the thermal insulation layer firmly, but also makes it very convenient to disassemble and assemble the thermal insulation layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A schematic diagram of the three-dimensional structure of the thermal insulation top cover assembly provided in an embodiment of the utility model;

[0033] Figure 2 for Figure 1 A schematic diagram of the structure of the thermal insulation top cover assembly after the thermal insulation layer is hidden;

[0034] Figure 3 A schematic cross-sectional view of the heat preservation top cover assembly provided in an embodiment of the utility model;

[0035] Figure 4 for Figure 3Schematic diagram of the local structure at IV in FIG.

[0036] icon:

[0037] 10- Insulation top cover assembly;

[0038] 100-top cover body; 110-top cover plate; 111-bending portion; 120-top cover fixing piece; 121-top cover fixing hole; 122-first fixing plate; 123-connecting plate; 124-second fixing plate; 130-supporting longitudinal beam; 140-reinforcement beam;

[0039] 200- thermal insulation layer;

[0040] 300-mounting member; 310-second mounting hole; 320-first side plate; 330-mounting plate; 340-second side plate;

[0041] 400 -fixing member; 410 -bearing portion; 420 -connecting portion; 430 -fixing portion; 431 -first mounting hole. DETAILED DESCRIPTION

[0042] The top insulation effect of the box-type substation in the prior art is poor. Under the condition of long-term sunlight and being in a high-temperature area, the temperature inside the box rises quickly and is high during the day; condensation is easily formed at night, which poses a safety hazard when the internal components of the box-type substation are in operation.

[0043] In view of this, an embodiment of the utility model provides a thermal insulation top cover assembly and a box-type substation using the thermal insulation top cover assembly, which can effectively improve the thermal insulation effect of the top of the box-type substation, make it difficult for condensation to form inside the box-type substation at night, improve the safety of internal components during operation, and effectively protect the internal components.

[0044] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0045] See also Figure 1 The embodiment of the utility model provides a thermal insulation top cover assembly 10, which is applied to a box-type substation (not shown). The box-type substation includes a box-type substation body (not shown) and the above-mentioned thermal insulation top cover assembly 10. The thermal insulation top cover assembly 10 is installed on the top of the box-type substation body, which can effectively improve the thermal insulation effect of the top of the box-type substation body.

[0046] See also Figure 1 to Figure 3The thermal insulation top cover assembly 10 includes a top cover body 100, a thermal insulation layer 200, a mounting member 300 and a fixing member 400. The top cover body 100 is used to connect with the box transformer body of the box-type substation, and the inner side of the top cover body 100 is connected with the mounting member 300. The thermal insulation layer 200 is located on the inner side of the top cover body 100. The fixing member 400 is detachably connected to the mounting member 300, and the thermal insulation layer 200 is pressed between the mounting member 300 and the fixing member 400. In this embodiment, the thermal insulation layer 200 can optionally adopt an insulating rock wool board, or other flame retardant and thermal insulation materials.

[0047] The thermal insulation top cover assembly 10 provided by the embodiment of the utility model can effectively improve the thermal insulation effect of the top of the box-type substation by arranging the thermal insulation layer 200 on the inner side of the top cover body 100, so that condensation is not easily formed inside the box-type substation body at night, and the safety of the components inside the box-type substation body during operation is improved, so that the internal components are effectively protected. In addition, the fixing member 400 and the mounting member 300 are detachably connected to realize the thermal insulation layer 200 being pressed between the mounting member 300 and the fixing member 400, which not only fixes the thermal insulation layer 200 firmly, but also facilitates the disassembly and assembly of the thermal insulation layer 200.

[0048] See also Figure 2 and Figure 4 The roof body 100 includes a roof plate 110 , a roof fixing member 120 , a supporting longitudinal beam 130 and a reinforcing cross beam 140 .

[0049] The top cover plate 110 is roughly in the shape of a "human", that is, both the left and right sides of the top cover plate 110 are inclined downward to drain the rainwater and sewage on the top cover plate 110 downward. The top cover plate 110 is provided with a bending portion 111 that is bent downward. In this embodiment, both the left and right sides of the top cover plate 110 are provided with a bending portion 111 that is bent downward. It should be understood that the bending portion 111 and the top cover plate 110 can be integrally formed, and the bending portion 111 is formed by bending the left and right sides of the top cover plate 110 downward respectively.

[0050] The supporting longitudinal beam 130 and the reinforcing cross beam 140 are both connected to the inner side of the top cover plate 110, the supporting longitudinal beam 130 is arranged in the middle position of the top cover plate 110, and one end of the reinforcing cross beam 140 is connected to the supporting longitudinal beam 130. The supporting longitudinal beam 130 and the reinforcing cross beam 140 can play a role of supporting and reinforcing the top cover plate 110. In this embodiment, the supporting longitudinal beam 130 is connected to the top inner side of the "human" shaped top cover plate 110. Further optionally, the supporting longitudinal beam 130 is roughly an inverted U-shaped structure, and its top surface is fitted with the inner side of the top cover plate 110, and is connected to the intersection position in the middle of the "human" shaped top cover plate 110. The reinforcing cross beam 140 is arranged roughly vertically with the supporting longitudinal beam 130, and the reinforcing cross beam 140 can be selected as multiple, and the multiple reinforcing cross beams 140 are distributed on the left and right sides of the supporting longitudinal beam 130, and the multiple reinforcing cross beams 140 on the left and right sides are arranged in sequence.

[0051] The top cover fixing member 120 is connected to the inner side of the bent portion 111 and is used to connect to the box transformer body, so that the entire insulation top cover assembly 10 is easily installed on the box transformer body. The top cover fixing member 120 is provided with a top cover fixing hole 121, which is used for detachable connection with the box transformer body, for example, it can be installed by fasteners such as bolts, so that the entire insulation top cover assembly 10 can be easily disassembled and assembled.

[0052] See also Figure 4 In order to further facilitate the disassembly and assembly of the thermal insulation top cover assembly 10 and the transformer body, in this embodiment, the top cover fixing member 120 is roughly a plate-like structure with a Z-shaped longitudinal section, that is, the top cover fixing member 120 is a plate-like structure bent to form a structure with a Z-shaped longitudinal section. Optionally, the top cover fixing member 120 includes a first fixing plate 122, a connecting plate 123 and a second fixing plate 124, and the first fixing plate 122, the connecting plate 123 and the second fixing plate 124 are sequentially connected to form a plate-like structure with a Z-shaped longitudinal section, and the first fixing plate 122 is perpendicular to the connecting plate 123, and the connecting plate 123 is perpendicular to the second fixing plate 124. Among them, the top cover fixing hole 121 is set on the first fixing plate 122, and the second fixing plate 124 is welded to the bending portion 111.

[0053] In addition, the fixing member 400 includes a bearing portion 410, a connecting portion 420 and a fixing portion 430. The bearing portion 410, the connecting portion 420 and the fixing portion 430 are sequentially connected to form a plate-like structure with a Z-shaped longitudinal section, and the bearing portion 410 is perpendicular to the connecting portion 420, and the connecting portion 420 is perpendicular to the fixing portion 430. The fixing portion 430 is detachably connected to the mounting member 300, so that the thermal insulation layer 200 is at least partially pressed between the bearing portion 410 and the mounting member 300. In this way, during installation, the thermal insulation layer 200 can be placed on the mounting member 300 first, and the fixing portion 430 is detachably connected to the mounting member 300, so that the thermal insulation layer 200 is at least partially pressed between the bearing portion 410 and the mounting member 300, which can ensure that the thermal insulation layer 200 is firmly fixed and facilitate the disassembly and assembly of the fixing portion 430, thereby facilitating the disassembly and assembly of the thermal insulation layer 200.

[0054] It should be noted that the bearing portion 410, the connecting portion 420 and the fixing portion 430 are sequentially connected to form a plate-like structure with a Z-shaped longitudinal section, that is, the fixing member 400 is bent from a plate-like structure to form a structure with a Z-shaped longitudinal section, thereby forming the bearing portion 410, the connecting portion 420 and the fixing portion 430. In this way, a step shape is formed between the bearing portion 410 and the connecting portion 420, and after the fixing portion 430 is connected to the mounting member 300, the thermal insulation layer 200 is at least partially pressed in the space formed between the bearing portion 410 and the mounting member 300.

[0055] In order to facilitate disassembly and assembly, in this embodiment, the fixing portion 430 is provided with a first mounting hole 431, and the mounting member 300 is provided with a second mounting hole 310, and the first mounting hole 431 and the second mounting hole 310 are connected by self-drilling self-tapping screws or rivets. By adopting the self-drilling self-tapping screws or rivet connection, it is very convenient to detachably connect the fixing portion 430 and the mounting member 300, thereby facilitating the disassembly and assembly of the thermal insulation layer 200.

[0056] Optionally, the number of the fixing member 400 and the mounting member 300 includes two, and the two ends of the thermal insulation layer 200 are fixed to the corresponding mounting members 300 through the fixing members 400. In this way, the thermal insulation layer 200 can be partially pressed between the fixing member 400 and the mounting member 300, which is convenient for the disassembly and assembly of the thermal insulation layer 200. When fixing the thermal insulation layer 200, one end of the thermal insulation layer 200 can be placed on the mounting member 300, and then the end of the thermal insulation layer 200 can be fixed to the mounting member 300 by self-drilling self-tapping screws or rivets, and then the other end of the thermal insulation layer 200 is fixed in the same way, so as to fix the thermal insulation layer 200.

[0057] In addition, the mounting member 300 is connected to both the top cover plate 110 and the bending portion 111, so that the mounting member 300 can strengthen the top cover plate 110 and provide a stable installation foundation for the thermal insulation layer 200. In this embodiment, the mounting member 300 includes a first side plate 320, a mounting plate 330 and a second side plate 340. Among them, the first side plate 320, the mounting plate 330 and the second side plate 340 are connected in sequence to form a plate-like structure with a U-shaped longitudinal section. The end of the first side plate 320 away from the mounting plate 330 is welded to the top cover plate 110, and the second side plate 340 is attached to and welded to the bending portion 111. The mounting plate 330 is attached to and detachably connected to the fixing portion 430. The second mounting hole 310 is provided on the mounting plate 330 so as to be connected to the fixing portion 430.

[0058] It should be understood that the mounting member 300 is formed by bending a plate-like structure into a U-shaped structure in longitudinal section, thereby forming a first side plate 320, a mounting plate 330 and a second side plate 340 connected in sequence. By setting the mounting member 300 as a plate-like structure with a U-shaped longitudinal section, it can not only ensure the connection with the top cover plate 110 and the bent portion 111, but also play a good reinforcement role on the top cover plate 110, and through the mounting plate 330, it is convenient to fit and detachably connect with the fixing portion 430, so as to fix the thermal insulation layer 200.

[0059] In addition, in order to further enhance the reinforcing effect of the mounting member 300 on the top cover plate 110, the mounting member 300 is in an elongated shape as a whole, and the end of the mounting member 300 in the length direction is connected to the reinforcing cross beam 140. As an example, the end surfaces of the same end of the first side plate 320, the mounting plate 330 and the second side plate 340 are all welded to the reinforcing cross beam 140.

[0060] Optionally, the spacing H between the upper surface of the top cover fixing member 120 and the bearing portion 410 on the vertical plane is ≥35mm. In this way, it can be considered that the bending portion 111 is heightened to ensure the above-mentioned spacing H ≥35mm, thereby leaving enough space for the connection between the top cover fixing member 120 and the transformer body, ensuring the connection between the top cover fixing member 120 and the transformer body, and then ensuring that the entire thermal insulation top cover assembly 10 is installed on the top of the transformer body. It should be noted that in this embodiment, when measuring the spacing H, the spacing between the upper surface of the first fixing plate 122 and the bearing portion 410 on the vertical plane can be measured.

[0061] Optionally, the spacing D between the end face of the top cover fixing member 120 away from the bending portion 111 and the connecting portion 420 in the horizontal plane is ≥30mm. In this way, it can be considered that the mounting member 300 is widened to ensure the above-mentioned spacing D ≥30mm. It should be noted that in the vertical direction, a gap is formed between the end face of the top cover fixing member 120 away from the bending portion 111 and the connecting portion 420, and the gap corresponds to the position of the first mounting hole 431 and the second mounting hole 310 to facilitate installation operations. By setting the spacing D ≥ 30mm, sufficient operating space can be reserved for the connection between the fixing portion 430 and the mounting member 300, thereby ensuring the connection between the fixing portion 430 and the mounting member 300, and further ensuring the fixation of the thermal insulation layer 200. In addition, it should be noted that when measuring the spacing D, the spacing between the end face of the first fixing plate 122 away from the bending portion 111 and the connecting portion 420 in the horizontal plane can be measured.

[0062] Please refer to Figure 2 to Figure 4 In addition, if the thermal insulation layer 200 needs to be set to a wider width, since the thermal insulation layer 200 is fixed at both ends, the middle of the thermal insulation layer 200 may be bent downward, affecting the fixing effect of the thermal insulation layer 200. In order to solve the above technical problems, in other embodiments of the utility model, based on the thermal insulation top cover assembly 10 provided in the above embodiment, the supporting longitudinal beam 130 can be detachably connected to the thermal insulation layer 200. For example, the middle of the thermal insulation layer 200 can be fastened to the supporting longitudinal beam 130 by long bolts, etc., so as to prevent the middle of the thermal insulation layer 200 from bending downward.

[0063] In summary, the thermal insulation top cover assembly 10 and the box-type substation provided by the embodiment of the utility model can effectively improve the thermal insulation effect of the top of the box-type substation by setting the thermal insulation layer 200 on the inner side of the top cover body 100. The thermal insulation effect is good, so that condensation is not easy to form inside the box-type substation body at night, and the safety of the components inside the box-type substation body during operation is improved, so that the internal components are effectively protected. In addition, the fixing member 400 and the mounting member 300 are detachably connected to realize the thermal insulation layer 200 being pressed between the mounting member 300 and the fixing member 400, which not only fixes the thermal insulation layer 200 firmly, but also facilitates the disassembly and assembly of the thermal insulation layer 200. The thermal insulation layer 200 is arranged on the inner side of the top cover body 100, which can be used as a suspended ceiling. In this way, the plate is not sealed separately, and the suspended ceiling layer is set separately. And the thermal insulation rock wool board can be optionally used to make the suspended ceiling on the top of the box-type substation body flat, smooth and beautiful. In addition, the parts of the thermal insulation top cover assembly 10, such as the top cover plate 110, the fixing part 400, the mounting part 300, the top cover fixing part 120, etc., are obtained by bending a plate-like structure, which can greatly reduce the use of angle steel, steel section and other structures, thereby forming a frameless structure, which can not only ensure structural strength and reduce costs, but also facilitate installation.

[0064] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A thermal insulation top cover assembly, characterized in that: It comprises a top cover body (100), a thermal insulation layer (200), a mounting member (300) and a fixing member (400); The top cover body (100) is used to be connected to a box-type transformer body of a box-type transformer station, and the inner side surface of the top cover body (100) is connected to the mounting member (300); The thermal insulation layer (200) is located inside the top cover body (100); The fixing member (400) is detachably connected to the mounting member (300), and the thermal insulation layer (200) is pressed between the mounting member (300) and the fixing member (400).

2. The thermal insulation top cover assembly according to claim 1, characterized in that: The fixing member (400) comprises a bearing portion (410), a connecting portion (420) and a fixing portion (430); The bearing portion (410), the connecting portion (420) and the fixing portion (430) are connected in sequence to form a plate-like structure with a Z-shaped longitudinal section; The fixing portion (430) is detachably connected to the mounting member (300), so that the thermal insulation layer (200) is at least partially pressed between the bearing portion (410) and the mounting member (300).

3. The thermal insulation top cover assembly according to claim 2, characterized in that: The fixing portion (430) is provided with a first mounting hole (431), and the mounting member (300) is provided with a second mounting hole (310), and the first mounting hole (431) and the second mounting hole (310) are connected by self-drilling and self-tapping screws or rivets.

4. The thermal insulation top cover assembly according to claim 2, characterized in that: The top cover body (100) comprises a top cover plate (110) and a top cover fixing member (120); the top cover plate (110) is provided with a bent portion (111) bent downward; The mounting member (300) is connected to both the top cover plate (110) and the bent portion (111); The top cover fixing member (120) is connected to the inner side of the bent portion (111) and is used to be connected to the box-type transformer body.

5. The thermal insulation top cover assembly according to claim 4, characterized in that: The distance H between the upper surface of the top cover fixing member (120) and the bearing portion (410) on the vertical plane is ≥35 mm.

6. The thermal insulation top cover assembly according to claim 4, characterized in that: The distance D between an end surface of the top cover fixing member (120) away from the bending portion (111) and the connecting portion (420) on a horizontal plane is ≥30 mm.

7. The thermal insulation top cover assembly according to claim 4, characterized in that: The mounting member (300) comprises a first side plate (320), a mounting plate (330) and a second side plate (340); The first side plate (320), the mounting plate (330) and the second side plate (340) are sequentially connected to form a plate-like structure with a U-shaped longitudinal section; One end of the first side plate (320) away from the mounting plate (330) is welded to the top cover plate (110), and the second side plate (340) is attached to and welded to the bent portion (111); The mounting plate (330) is attached to the fixing portion (430) and is detachably connected thereto.

8. The thermal insulation top cover assembly according to claim 4, characterized in that: The roof body (100) further comprises a supporting longitudinal beam (130) and a reinforcing cross beam (140); The supporting longitudinal beam (130) and the reinforcing cross beam (140) are both connected to the inner side surface of the top cover plate (110), the supporting longitudinal beam (130) is arranged at the middle position of the top cover plate (110), and one end of the reinforcing cross beam (140) is connected to the supporting longitudinal beam (130); The supporting longitudinal beam (130) is detachably connected to the thermal insulation layer (200).

9. The thermal insulation top cover assembly according to any one of claims 1 to 8, characterized in that: The number of the fixing members (400) and the number of the mounting members (300) are both two, and the two ends of the thermal insulation layer (200) are respectively fixed to the corresponding mounting members (300) through the fixing members (400).

10. A box-type substation, characterized in that: It comprises a transformer body and a heat-insulating top cover assembly (10) as claimed in any one of claims 1 to 9, wherein the top cover body (100) is connected to the transformer body.

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