Transformer equipment and box-type substation

Abstract

The embodiment of the utility model provides voltage transformation equipment and a box-type substation comprising the same, and relates to the technical field of power distribution. Wherein the box-type substation comprises an equipment box and transformation equipment arranged in the equipment box, the transformation equipment comprises a transformer, a radiator and a fixing assembly, and the radiator is connected with the transformer and used for radiating heat of the transformer; the fixing assembly comprises a first pressing strip, a first pull rod and a second pull rod, the first pressing strip is located on the side, away from the transformer, of the radiator, one ends of the first pull rod and the second pull rod are connected with the transformer, the other ends are connected with the first pressing strip, the radiator is located between the first pull rod and the second pull rod, and the first pressing strip abuts against the radiator. The possibility that the radiator falls off from the transformation equipment can be reduced, and the radiator is installed and connected more stably.

Description

Technical Field

[0001] The present application relates to the field of power distribution technology, and in particular to a transformer device and a box-type transformer substation. Background Art

[0002] In the photovoltaic power generation system, the box-type substation integrates transformers, distribution cabinets and other equipment in a container, providing a highly integrated power distribution solution for the photovoltaic power station grid-connected scenario. With the rapid development of new energy industries such as photovoltaics, the application of box-type substations has become more and more popular, and the capacity of box-type substations has become larger and larger. However, the increase in the capacity of the box-type substation will increase the size of the transformer. When the size of the transformer increases, the radiator that dissipates heat for the transformer will also increase.

[0003] In the related art, the radiator is installed on the bottom plate of the box-type substation (for example, on the bottom plate of the container) through the bottom support legs. However, when the volume of the radiator increases, the radiator may fall off due to vibration during transportation, increasing the risk of damage to the radiator, thereby affecting the installation and use of the entire box-type substation. Utility Model Content

[0004] The present application provides a transformer device and a box-type substation including the transformer device, which reduces the possibility of a radiator falling off the transformer device and makes the installation and connection of the radiator more stable.

[0005] In order to achieve the above objectives, this application adopts the following technical solutions:

[0006] In a first aspect of the present application, a box-type substation is provided, which includes an equipment box and a transformer equipment arranged in the equipment box, the transformer equipment includes a transformer, a radiator and a fixing assembly, the radiator is connected to the transformer and is used to dissipate heat for the transformer; the fixing assembly includes a first pressure strip, a first pull rod and a second pull rod, the first pressure strip is located on the side of the radiator away from the transformer, the first pull rod and the second pull rod are both connected to the transformer at one end and connected to the first pressure strip at the other end, the radiator is located between the first pull rod and the second pull rod, and the first pressure strip presses the radiator.

[0007] A voltage transformation device is arranged inside a box-type substation. The radiator in the voltage transformation device dissipates heat for the transformer. In addition to being fixed to the transformer through a structure directly connected to the transformer, the radiator is further fixed by a first pressing strip. That is, under the connection of the first pull rod and the second pull rod, the first pressing strip protects the radiator on the side of the radiator away from the transformer. When there is a risk of the radiator falling (or, when there is a tendency to move away from the transformer), the first pressing strip will press against the radiator, reducing the possibility of the radiator falling off and making the connection between the radiator and the transformer more stable. In addition, the first pull rod and the second pull rod are located on both sides of the radiator. When the radiator shakes laterally, the first pull rod and the second pull rod can limit the shaking degree of the radiator, further reducing the possibility of the radiator falling off.

[0008] In an optional embodiment, the voltage transformation device further includes an elastic buffer pad, and the buffer pad is arranged between the first pressing strip and the radiator.

[0009] Arranging a buffer pad between the first pressing strip and the radiator can isolate the first pressing strip and the radiator, reducing the possibility of the radiator being damaged, deformed or painted due to direct contact with the first pressing strip. In addition, the first pressing strip is elastic and can also play a buffering role. When the radiator vibrates (for example, the radiator vibrates during transportation or installation), the arrangement of the buffer pad can reduce the impact force when the radiator collides with the first pressing strip, playing a protective role for both the radiator and the first pressing strip.

[0010] In an optional embodiment, the buffer pad is strip-shaped and extends along the length direction of the first pressing strip.

[0011] The buffer pad extending along the length direction of the first pressing strip can better isolate the first pressing strip and the radiator, enabling more areas between the radiator and the first pressing strip to be provided with the buffer pad, further reducing the possibility of the radiator or the first pressing strip being damaged during the transportation and installation of the voltage transformation device.

[0012] In an optional embodiment, the fixing assembly further includes a plurality of nuts. The first pull rod and the second pull rod both pass through the first pressing strip and are each threadedly connected to at least one nut, and the first pressing strip is clamped between the plurality of nuts and the radiator.

[0013] When installing the first pressing strip, install the first pressing strip at the ends of the first pull rod and the second pull rod, and make the first pull rod and the second pull rod pass through the first pressing strip. Then tighten the nuts at the ends of the first pull rod and the second pull rod to make the nuts press against the first pressing strip. Under the limitation of the nuts, the first pressing strip can press against the radiator when the radiator shakes, reducing the possibility of the radiator falling off, making the connection between the radiator and the transformer more stable, and reducing the possibility of the radiator falling off.

[0014] In an optional embodiment, the transformer includes a liquid storage tank, an iron core and a winding wound on the iron core, the iron core and the winding are both arranged in the liquid storage tank, the liquid storage tank is provided with a liquid for cooling the iron core and the winding, the radiator is provided with a chamber connected to the internal space of the liquid storage tank, and the first pull rod and the second pull rod are both connected to the liquid storage tank.

[0015] The heat of the transformer is mainly generated from the internal iron core and windings. The liquid (for example, oil) is set in the liquid storage tank and immerses the iron core and windings. The radiator is connected to the liquid storage tank. The liquid in the liquid storage tank will take away the heat inside the transformer and then enter the radiator for heat dissipation. After the liquid exchanges heat with the outside in the radiator, it returns to the liquid storage tank, and the cycle is used to achieve heat dissipation of the transformer. With the first pressure strip of the present application, in addition to being fixedly connected to the transformer through a structure (for example, a pipeline) connected to the liquid storage tank, the radiator will also be further fixed by connecting the first pressure strip to the first pull rod and the second pull rod, reducing the possibility of separation of the radiator and the liquid storage tank, making the connection between the radiator and the liquid storage tank more stable.

[0016] In an optional embodiment, the fixing component also includes a third pull rod, the radiator includes a plurality of heat dissipation components spaced apart along a first direction, each heat dissipation component includes a plurality of heat dissipation fins spaced apart along a second direction, a heat dissipation cavity is provided inside each heat dissipation fin, the cavity of the radiator includes the heat dissipation cavity of each heat dissipation fin, the third pull rod is arranged between two of the heat dissipation components, one end of the third pull rod is connected to the liquid storage tank, and the other end is connected to the first pressure strip, the first direction is perpendicular to the second direction, and both are perpendicular to the vertical direction.

[0017] The third tie rod serves to connect the liquid storage tank and the first pressure strip. The third tie rod is arranged between two adjacent heat dissipation components, so that the third tie rod cooperates with the first tie rod and the second tie rod to connect the first pressure strip and the liquid storage tank. When the radiator is long, the fixing component also has sufficient protection capability, which reduces the possibility of the first pressure strip breaking the first tie rod and the second tie rod due to excessive impact, and further enhances the stability of the connection between the radiator and the liquid storage tank. In addition, when the heat dissipation components on both sides of the third tie rod shake toward the third tie rod, the third tie rod can limit the shaking degree of the heat dissipation components, so that the heat dissipation components and the entire radiator are more stably connected to the liquid storage tank.

[0018] In an optional embodiment, the fixing assembly further includes a second pressure strip, which is located on a side of the heat sink away from the transformer and connected to the transformer, and the second pressure strip and the first pressure strip are distributed in a vertical direction, and the second pressure strip presses against the heat sink.

[0019] The second pressing strip and the first pressing strip fix the radiator at different positions in the vertical direction respectively. When the shaking amplitude of the radiator is large, it can better stabilize the radiator, reduce the possibility that a single pressing strip (for example, the first pressing strip) falls off due to excessive impact, play a better fixing role for the radiator, and also limit the shaking amplitude of the radiator.

[0020] In an optional implementation manner, the voltage conversion device further includes an elastic buffer column, and the buffer column is located between the transformer and the radiator, and the buffer column is fixed on the transformer or the radiator.

[0021] When the radiator shakes towards the transformer side, the buffer column plays a role in supporting the radiator and reduces the risk of the radiator colliding with the transformer. Moreover, the buffer column is elastic. When the buffer column abuts against the radiator and the transformer at the same time, it can reduce the shaking amplitude of the radiator, play a role in stabilizing the radiator, and further reduce the risk of the radiator separating from the transformer.

[0022] In an optional implementation manner, a low-voltage chamber, a voltage conversion chamber, and a high-voltage chamber are arranged in the equipment box in a first direction. The low-voltage chamber and the high-voltage chamber are located on different sides of the voltage conversion chamber. The voltage conversion device is arranged in the voltage conversion chamber. A low-voltage power distribution cabinet is arranged in the low-voltage chamber, and a high-voltage power distribution cabinet is arranged in the high-voltage chamber. Both the low-voltage power distribution cabinet and the high-voltage power distribution cabinet are electrically connected to the transformer. The transformer is used to change the voltage input by one of the low-voltage power distribution cabinet and the high-voltage power distribution cabinet and output it to the other. The radiator is located on the side of the transformer in a second direction. The first direction and the second direction are perpendicular and both are perpendicular to the vertical direction.

[0023] Taking a photovoltaic system as an example, the low-voltage power distribution cabinet will collect the low-voltage alternating current output by the inverter, then send it to the transformer for boosting, and finally merge the boosted alternating current into the power grid through the high-voltage power distribution cabinet. The radiator is located on the side of the transformer in the second direction, which can make full use of the space on the side of the transformer, making the arrangement of the transformer and the radiator in the voltage conversion chamber more reasonable. Moreover, the radiator is arranged far away from the low-voltage power distribution cabinet or the high-voltage power distribution cabinet, which is beneficial to the heat dissipation of the radiator and also beneficial to the electrical connection between the transformer and the low-voltage power distribution cabinet and the high-voltage power distribution cabinet.

[0024] In an optional implementation manner, the equipment box further includes a support column arranged in the voltage conversion chamber. The equipment box includes a cuboid frame with the length direction parallel to the first direction. The cuboid frame includes four frame columns extending in the first direction. The four frame columns include two first frame columns distributed in the vertical direction and two second frame columns distributed in the vertical direction. Both ends of the support column are detachably connected to a first frame column respectively, or one end of the support column is detachably connected to the higher one of the two first frame columns, and the other end is detachably connected to the higher one of the two second frame columns.

[0025] When the transformer is large, the length or width of the transformer room will increase. Support columns are set in the transformer room, and the rectangular frame is connected and supported by the support columns, so that the strength of the transformer room and the rectangular frame is stronger. In this way, the structure of the equipment box is strengthened, the rigidity and strength of the equipment box are improved, and the swing amplitude of the equipment box during transportation is reduced. In addition, the detachable setting of the support column also facilitates the installation or maintenance of the transformer equipment.

[0026] According to a second aspect of the present application, a transformer device is provided, which includes a transformer, a radiator and a fixing assembly, wherein the radiator is connected to the transformer and is used to dissipate heat for the transformer; the fixing assembly includes a first pressure strip, a first pull rod and a second pull rod, wherein the first pressure strip is located on a side of the radiator facing away from the transformer, the first pull rod and the second pull rod are both connected to the transformer at one end and connected to the first pressure strip at the other end, the radiator is located between the first pull rod and the second pull rod, and the first pressure strip presses against the radiator.

[0027] Under the connection of the first pull rod and the second pull rod, the first pressure strip protects the radiator on the side of the radiator away from the transformer. When the radiator is at risk of falling, the first pressure strip will press the radiator, reducing the possibility of the radiator falling off and making the connection between the radiator and the transformer more stable. In addition, the first pull rod and the second pull rod are located on both sides of the radiator. When the radiator shakes sideways, the first pull rod and the second pull rod can also limit the shaking range of the radiator.

[0028] In an optional implementation, the transformer device further includes an elastic buffer pad, which is disposed between the first pressure strip and the heat sink.

[0029] The buffer pad serves to isolate the first pressure strip from the radiator, reducing the possibility that the first pressure strip may damage, deform or peel the radiator due to contact with the radiator. In addition, the first pressure strip is elastic and can also serve as a buffer. When the radiator vibrates, the buffer pad can reduce the impact force when the radiator collides with the first pressure strip, thus protecting both the radiator and the first pressure strip.

[0030] In an optional implementation, the transformer device further includes an elastic buffer column, the buffer column is located between the transformer and the radiator, and the buffer column is fixed on the transformer or the radiator.

[0031] When the radiator shakes toward the transformer, the buffer column supports the radiator, reducing the risk of the radiator colliding with the transformer. In addition, the buffer column is elastic. When the two ends of the buffer column abut the radiator and the transformer respectively, the amplitude of the radiator shaking can be reduced, stabilizing the radiator and further reducing the risk of the radiator and the transformer being separated.

[0032] In an alternative embodiment, the voltage transformation device further includes a protective cover disposed on top of the radiator. An accommodation groove is provided on the side of the protective cover facing the radiator, and the top of the radiator extends into the accommodation groove.

[0033] The protective cover is provided on the top of the radiator, which plays a role in protecting the radiator and reduces the possibility of damage to the radiator caused by heavy objects falling during transportation. The top of the radiator extends (or is snapped) into the accommodation groove of the protective cover, and the top of the radiator abuts against the inner wall of the accommodation groove, reducing the risk of the protective cover falling off the radiator and making the protective cover more stable after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 FIG. is a schematic structural diagram of a photovoltaic power distribution system provided by an embodiment of the present application;

[0035] Figure 2 FIG. is a schematic structural diagram of a box-type substation provided by an embodiment of the present application;

[0036] Figure 3 FIG. is a schematic structural diagram of another box-type substation provided by an embodiment of the present application;

[0037] Figure 4 FIG. is a schematic structural diagram of a voltage transformation device provided by an embodiment of the present application;

[0038] Figure 5 FIG. is a schematic diagram of a fixing component provided by an embodiment of the present application;

[0039] Figure 6 FIG. is a schematic diagram of the internal structure of a transformer provided by an embodiment of the present application;

[0040] Figure 7 FIG. is a schematic structural diagram of a radiator provided by an embodiment of the present application;

[0041] Figure 8 FIG. is a schematic structural diagram of another radiator provided by an embodiment of the present application;

[0042] Figure 9 FIG. is a schematic structural diagram of a first pressing strip provided by an embodiment of the present application;

[0043] Figure 10 FIG. is a schematic structural diagram of another first pressing strip provided by an embodiment of the present application;

[0044] Figure 11 FIG. is a schematic structural diagram of yet another first pressing strip provided by an embodiment of the present application;

[0045] Figure 12 FIG. is a schematic structural diagram of a buffer pad provided by an embodiment of the present application;

[0046] Figure 13 Structural schematic diagram of another voltage transformation device provided by an embodiment of the present application;

[0047] Figure 14 Structural schematic diagram of a buffer column provided by an embodiment of the present application;

[0048] Figure 15 Structural schematic diagram of a protective cover provided by an embodiment of the present application;

[0049] Figure 16 Structural schematic diagram of a receiving groove provided by an embodiment of the present application.

[0050] Reference numerals:

[0051] 10 - Photovoltaic power distribution system;

[0052] 100 - Box-type substation;

[0053] 110 - Equipment box; 101 - Low-voltage chamber; 1011 - Low-voltage power distribution cabinet; 1012 - Low-voltage lead; 102 - Voltage transformation chamber; 103 - High-voltage chamber; 1031 - High-voltage power distribution cabinet; 1032 - High-voltage lead; 1033 - Auxiliary transformer; 1034 - Auxiliary distribution box; 104 - Frame column; 1041 - First frame column; 1042 - Second frame column; 105 - Protective plate; 106 - First partition; 107 - Second partition; 108 - Support column; 109 - Protective door;

[0054] 120 - Voltage transformation device;

[0055] 1 - Transformer; 11 - Liquid storage tank; 111 - Low-voltage outlet; 112 - High-voltage outlet; 12 - Iron core; 13 - Winding; 14 - Adjustment box; 15 - Adjustment pipe; 16 - Airbag;

[0056] 2 - Radiator; 21 - Heat dissipation component; 211 - Liquid inlet pipe; 212 - Liquid outlet pipe; 213 - Heat sink;

[0057] 3 - Fixing component; 311 - First pressing strip; 312 - Second pressing strip; 321 - First pull rod; 322 - Second pull rod; 323 - Third pull rod; 324 - Fourth pull rod; 325 - Fifth pull rod; 326 - Sixth pull rod; 327 - Seventh pull rod; 328 - Eighth pull rod; 33 - Nut;

[0058] 4 - Buffer pad;

[0059] 5 - Buffer column; 51 - Step hole; 52 - Step surface;

[0060] 6 - Protective cover; 61 - Receiving groove; 611 - Sub-groove; 7111 - Deep groove; 7112 - Shallow groove; 72 - Binding strap;

[0061] 200 - Photovoltaic module; 300 - Inverter; 400 - Switch box; 500 - Step - up substation; 600 - Power grid. Detailed implementation manners

[0062] Next, the technical solutions in the embodiments of the present application will be 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 of the embodiments.

[0063] In the present application, unless otherwise clearly specified and defined, the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", etc. may include but is not limited to the orientation defined relative to the schematic placement of components in the accompanying drawings. Among them, these directional terms can be relative concepts. They are used for relative description and clarification, and they can change accordingly with the change of the orientation of the components placed in the accompanying drawings, and should not be understood as a limitation to the present application.

[0064] In the present application, terms such as "first", "second", etc. are only used for descriptive purposes, to distinguish one element from another, and should not be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features.

[0065] In the present application, unless otherwise clearly specified and defined, the meaning of "a plurality" is two or more.

[0066] In the present application, unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can 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 can be understood according to specific circumstances. Additionally, when describing pipelines or channels, the "connected" and "coupled" used in the present application have the meaning of conducting. The specific meaning needs to be understood in combination with the context.

[0067] In addition, in the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Exactly, using words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0068] In the drawings of the embodiments of the present application, entity structures such as components and assemblies are represented by guiding lines; hollow structures such as openings, holes, spaces, and cavities are represented by guiding lines with arrows.

[0069] An embodiment of the present application provides a box-type substation 100. Among them, the box-type substation 100 can be applied in any suitable scenario. For example, Figure 1 Exemplarily, the application of the box-type substation 100 in the photovoltaic power distribution system 10 is shown. Refer to Figure 1 , in addition to the box-type substation 100 of the present application, the photovoltaic power distribution system 10 may further include photovoltaic modules 200 (or solar cell modules), inverters 300, switch boxes 400, step-up substations 500 (in some other examples, the step-up substation 500 may not be additionally provided), etc.

[0070] In one example, refer to Figure 1 , the photovoltaic module 200 can directly convert solar energy into electrical energy by using the photovoltaic effect. The photovoltaic module 200 usually includes a plurality of solar cells connected in series or in parallel to achieve a certain rated output power and voltage. The inverter 300 (for example, a photovoltaic inverter) can convert the variable DC voltage generated by the photovoltaic module 200 into alternating current. After passing through the switch box 400 for controlling on and off, it is sent to the box-type substation 100 of the present application for voltage transformation. After the voltage transformation, the voltage will be input to the step-up substation 500 for boosting (in some other examples, the step-up substation 500 may not be additionally provided), and finally fed back to the power grid 600 (in some other examples, it can also be connected to an intelligent sub-array controller).

[0071] Figure 2 Exemplarily, the structure of a box-type substation 100 is shown. Refer to Figure 2 , the box-type substation 100 includes an equipment box 110 and a voltage transformation device 120 disposed in the equipment box 110. In some examples, the equipment box 110 can be a container. For example, the equipment box 110 is a container that meets international standards, a container that meets regional standards, and so on. The equipment box 110 is in the form of a container, which has the advantages of high standardization, good sealing performance, low breakage rate, etc., can improve the safety and efficiency of transporting the equipment box 110, and reduce the transportation cost.

[0072] In other examples, the equipment box 110 can also be a box with any specifications and dimensions, in a square, cylindrical shape, or without an obvious shape.

[0073] In one example, refer to Figure 2, the equipment box 110 may include a cuboid frame with its length direction parallel to the first direction. The height direction of the cuboid frame may be the vertical direction, the first direction is perpendicular to the vertical direction, the width direction of the cuboid frame may be the second direction, and the second direction is perpendicular to the first direction and also perpendicular to the vertical direction. Among them, the cuboid frame has twelve frame columns 104( Figure 2 in which some of the frame columns 104 are blocked), four frame columns 104 are distributed along the vertical direction, another four frame columns 104 are distributed along the first direction, and another four frame columns 104 are distributed along the second direction. The twelve frame columns 104 are connected by a connecting structure (for example, the corner fittings of a container) to form the above-mentioned cuboid frame by overlapping.

[0074] In addition, the equipment box 110 may further include a protective plate 105. The protective plate 105 is installed on the outer side of the cuboid frame to protect the equipment inside the cuboid frame. For example, protective plates 105 may be provided at both the top and bottom of the cuboid frame, protective plates 105 may also be provided at both ends of the cuboid frame in the first direction, and protective plates 105 may also be provided on both sides of the cuboid frame in the second direction. To facilitate observing the equipment inside the equipment box 110, Figure 2 some of the protective plates 105 are hidden in the figure.

[0075] In other examples, the equipment box 110 may also be a box body formed by fixing multiple metal plates to enclose each other, or a box body formed by a mesh hollow structure. The structure of the equipment box 110 is not limited to the examples given in this application.

[0076] To facilitate installing different equipment in the equipment box 110, a low-voltage chamber 101, a transformer chamber 102, and a high-voltage chamber 103 are provided in the equipment box 110 and distributed along the first direction (which may be the length direction of the equipment box 110). The low-voltage chamber 101 and the high-voltage chamber 103 are located on different sides of the transformer chamber 102. Multiple partitions are provided in the equipment box 110 to separate the above three chambers, for example, a first partition 106 and a second partition 107. Among them, the low-voltage chamber 101 and the transformer chamber 102 are on both sides of the first partition 106, and the transformer chamber 102 and the high-voltage chamber 103 are on both sides of the second partition 107.

[0077] The transformer equipment 120 is arranged in the transformer chamber 102. A low-voltage power distribution cabinet 1011 is arranged in the low-voltage chamber 101. The low-voltage power distribution cabinet 1011 reserves switches (such as AC input / output switches, remote / local conversion switches, etc.) and sockets for external equipment. A high-voltage power distribution cabinet 1031 is arranged in the high-voltage chamber 103. For example, the high-voltage power distribution cabinet 1031 may be a CVC-type or DVC-type SF 6 ring main unit. When the high-voltage power distribution cabinet 1031 is of the CVC type SF 6In an example of a ring main unit, the high-voltage switchgear cabinet 1031 may include one circuit breaker cabinet (V cabinet) and two load switch cabinets (C cabinets); when the high-voltage switchgear cabinet 1031 is in the form of DVC and SF 6 In an example of a ring main unit, the high-voltage switchgear cabinet 1031 may include one direct incoming line cabinet (D cabinet), one circuit breaker cabinet (V cabinet), and one load switch cabinet (C cabinet).

[0078] In some other examples, the low-voltage switchgear cabinet 1011 and the high-voltage switchgear cabinet 1031 may be any suitable switchgear cabinet or control cabinet.

[0079] Both the low-voltage switchgear cabinet 1011 and the high-voltage switchgear cabinet 1031 are electrically connected to the voltage transformation device 120 (for example, electrically connected through cables). In some examples, the low-voltage switchgear cabinet 1011 collects the low-voltage alternating current output by the upstream device (for example, the inverter 300), then sends it to the voltage transformation device 120 for boosting, and finally outputs the boosted alternating current through the high-voltage switchgear cabinet 1031, for example, connecting to the power grid 600. In some other examples, it may be that the high-voltage switchgear cabinet 1031 collects the high-voltage alternating current output by the upstream device, then sends it to the voltage transformation device 120 for stepping down, and finally outputs the stepped-down alternating current through the low-voltage switchgear cabinet 1011.

[0080] It should be noted that the "low voltage" and "high voltage" in the "low-voltage room 101" and "high-voltage room 103" of the present application, as well as the "low voltage" and "high voltage" in the "low-voltage switchgear cabinet 1011" and "high-voltage switchgear cabinet 1031", are all relative concepts. For example, boosting is to raise the low voltage to high voltage, and stepping down is to lower the high voltage to low voltage, which is not a limitation on the voltage range. That is, the "low voltage" in the present application does not limit the voltage range, nor does the "high voltage". It is only the "high voltage" and "low voltage" after comparing the voltages on the input side and output side of the voltage transformation device 120, and the "low voltage" and "high voltage" should not be understood as a limitation on the voltage range of the present application. Under some standards, the "high voltage" in the present application may also be referred to as "medium voltage". For example, on both sides of the voltage transformation room 102 are the low-voltage room 101 and the medium-voltage room, and a medium-voltage switchgear cabinet is arranged in the medium-voltage room.

[0081] In addition, an auxiliary transformer 1033 and an auxiliary distribution box 1034 may also be arranged in the low-voltage room 101 or the high-voltage room 103. In Figure 2 the example, the auxiliary transformer 1033 and the auxiliary distribution box 1034 are arranged in the high-voltage room 103. The auxiliary transformer 1033 can provide power for the secondary equipment (such as smoke sensors, lighting lamps, etc.) in the box-type substation 100, and the auxiliary distribution box 1034 can be used as a switch control box for the secondary equipment and other auxiliary equipment.

[0082] When the volume of the voltage transformation device 120 is large, the size of the voltage transformation chamber 102 for accommodating the voltage transformation device 120 will also be large, and the length or width of the middle space of the equipment box 110 will be large. In this way, when the equipment box 110 is transported and installed, there will be risks such as shaking and breaking. Therefore, a connection structure or a support structure needs to be set up to enhance the structural strength of the equipment box 110. Figure 3 Another structure of the box-type substation 100 is exemplarily shown. The equipment box 110 may further include support columns 108 arranged in the voltage transformation chamber 102. The support columns 108 play a role in strengthening the structure of the equipment box 110, improving the stiffness and strength of the equipment box 110, reducing the swing amplitude during the transportation of the equipment box 110, and also reducing the risk of damage to the equipment box 110.

[0083] In Figure 3 In the illustrated example, the equipment box 110 includes a rectangular parallelepiped frame with its length direction parallel to the first direction. The rectangular parallelepiped frame includes four frame columns 104 extending along the first direction. The four frame columns 104 include two first frame columns 1041 distributed in the vertical direction and two second frame columns 1042 distributed in the vertical direction ( Figure 3 The second frame column 1042 at the rear bottom in Figure 3 is blocked). Among them, a plurality of support columns 108 are provided and divided into three parts. One part of the support columns 108 (support columns 108a) are each connected to one first frame column 1041 at both ends; another part of the support columns 108 (located at the back of the equipment box 110 in Figure 3 , so it is blocked) are each connected to one second frame column 1042 at both ends; and another part of the support columns 108 (support columns 108b) are connected to the higher one of the two first frame columns 1041 at one end and the higher one of the two second frame columns 1042 at the other end. That is, this part of the support columns 108 (support columns 108b) are all located at the top of the rectangular parallelepiped frame.

[0084] Among them, one or more support columns 108a can be provided. In Figure 3In the illustrated example, a plurality of support columns 108a are provided and are spaced apart along the first direction. The extending directions of two adjacent support columns 108a may be different. For example, between two support columns 108a extending in the vertical direction, there is provided a support column 108a extending obliquely (the included angle between the extending direction and the vertical direction is not equal to 90°). In this way, the plurality of support columns 108a can block more space on the side of the transformer chamber 102 and play a protective role to a certain extent. Therefore, in this example, a protective plate 105 may not be provided on the outside of the support column 108a (in some other examples, it may also be provided). In addition, the number and layout mode of the support columns 108 between the two second frame columns 1042 may be the same as or different from the number and layout direction of the support columns 108a, and the present application does not make specific limitations thereon.

[0085] One or more support columns 108b may be provided. Each support column 108b may extend along the second direction or extend obliquely (the included angle between the extending direction and the second direction is not equal to 90°), as long as both ends of each support column 108b are respectively connected to a first frame column 1041 located above and a second frame column 1042 located above. In Figure 3 In the illustrated example, a plurality of support columns 108b are provided and are spaced apart along the first direction, and the extending directions of the plurality of support columns 108b are parallel (or rather, the extending directions are the same).

[0086] To facilitate the disassembly of the support column 108, each support column 108 is detachably connected to the cuboid frame. For example, both ends of the support column 108a are detachably connected to a first frame column 1041 respectively. For another example, one end of the support column 108b is detachably connected to the higher one of the two first frame columns 1041, and the other end is connected to the higher one of the two second frame columns 1042. Among them, the above-mentioned detachable connection may be connected through detachable structures such as bolts and nuts, and the staff can remove the support column 108 according to the disassembly steps.

[0087] Among them, the detachable setting of the support column 108a can play the role of the protective door 109. After the plurality of support columns 108a are installed, they can support the transformer chamber 102 while enhancing the structural strength of the equipment box 110, and play a protective role to prevent irrelevant personnel or relatively large objects from entering the transformer chamber 102, while taking into account ventilation and heat dissipation. When it is necessary to repair the transformer equipment 120, the plurality of support columns 108a can be removed to facilitate the entry of the staff.

[0088] The detachable setting of the support column 108b facilitates the disassembly and assembly of the voltage transformation device 120. For example, after removing the support column 108b, the voltage transformation device 120 can be hoisted into the equipment box 110 from above the equipment box 110, or hoisted out from the top of the equipment box 110. When the support column 108b is installed, it can act as a connecting beam (or cross beam) to improve the stiffness and strength of the equipment box 110 and reduce the swing amplitude during the transportation of the equipment box 110. In addition, for better protection of the voltage transformation device 120, a protective plate 105 can be laid above the support column 108b ( Figure 3 the protective plate 105 above the middle support column 108b is not shown).

[0089] In other examples, the support column 108 is fixedly connected (without an obvious detachable connection structure) to the cuboid frame. For example, the end of the support column 108 is fixedly welded to the corresponding frame column 104. In other examples, only some of the support columns 108 can be detachably connected to the cuboid frame. For example, the support column 108b is detachable, but the support column 108a is not detachable.

[0090] In other examples, one or more support columns 108 (non-detachable connection or detachable connection) can be provided only between the two first frame columns 1041, that is, only one or more support columns 108a are provided, and no support columns 108 are provided between the two second frame columns 1042 and on the top of the cuboid frame. In other examples, one or more support columns 108 (non-detachable connection or detachable connection) can be provided only on the top of the cuboid frame, that is, only one or more support columns 108b are provided, and no support columns 108 are provided between the two first frame columns 1041 and the two second frame columns 1042.

[0091] In some other examples, referring to Figure 2 , the support column 108a can also not be provided. In this example, a protective door 109 for opening or closing the transformer chamber 102 can be provided. Among them, the protective door 109 can be provided on one side in the second direction of the transformer chamber 102, or on both sides in the second direction of the transformer chamber 102. For the convenience of heat dissipation of the voltage transformation device 120, the protective door 109 can be a mesh door or a hollowed-out door.

[0092] In some other examples, a protective door 109 for opening or closing the transformer chamber 102 can be provided on one side in the second direction of the equipment box 110, and a plurality of support columns 108 located in the transformer chamber 102 and connected to the upper and lower opposite frame columns 104 can be provided on the other side.

[0093] The embodiment of the present application also provides a voltage transformation device 120, Figure 4 exemplarily shows the structure of a voltage transformation device 120. Referring toFigure 4 The transformer device 120 includes a transformer 1 and a heat sink 2, wherein the heat sink 2 is connected to the transformer 1 and is used to dissipate heat for the transformer 1. When the volume of the transformer 1 increases, the heat sink 2 for dissipating heat for the transformer 1 will also increase accordingly. In order to further fix the heat sink 2, the transformer device 120 may further include a fixing component 3.

[0094] Figure 5 The structure of a fixing assembly 3 is shown as an example. Figure 4 and Figure 5 The fixing assembly 3 includes a first pressure strip 311, a first pull rod 321 and a second pull rod 322. The first pressure strip 311 is located on the side of the radiator 2 away from the transformer 1. The first pull rod 321 and the second pull rod 322 are connected to the transformer 1 at one end (for example, welded or bolted), and connected to the first pressure strip 311 at the other end. The radiator 2 is located between the first pull rod 321 and the second pull rod 322. The first pressure strip 311 is used to press the radiator 2.

[0095] exist Figure 4 and Figure 5 In the example shown, the heat sink 2 is located on one side of the transformer 1 in the second direction, the first tie rod 321 and the second tie rod 322 are distributed along the first direction, and the space between the first tie rod 321 and the second tie rod 322 is used to place the heat sink 2. In other examples, the heat sink 2 can be located on one side of the transformer 1 in the first direction, and the first tie rod 321 and the second tie rod 322 are distributed along the second direction.

[0096] In order to facilitate the connection of the first pressure strip 311, the first pull rod 321 and the second pull rod 322 may extend toward a side away from the transformer 1, for example, Figure 4 and Figure 5 In the example shown, the first tie rod 321 and the second tie rod 322 extend outward from the transformer 1 along the second direction.

[0097] Under the connection of the first pull rod 321 and the second pull rod 322, the first pressure strip 311 protects the radiator 2 on the side of the radiator 2 away from the transformer 1. When the radiator 2 is in risk of falling (or, has a tendency to move toward the side away from the transformer 1), the first pressure strip 311 will press the radiator 2. In addition to being fixed to the transformer 1 through a structure directly connected to the transformer 1, the radiator 2 is further fixed to the transformer 1 through the first pressure strip 311, which reduces the possibility of the radiator 2 falling off and makes the connection between the radiator 2 and the transformer 1 more stable.

[0098] In addition, the first pull rod 321 and the second pull rod 322 are located on both sides of the radiator 2. When the radiator 2 shakes sideways, for example, when it shakes toward the first pull rod 321 or the second pull rod 322, the first pull rod 321 and the second pull rod 322 can limit the shaking degree of the radiator 2, further reducing the possibility of the radiator 2 falling off the transformer 1.

[0099] In some examples, the transformer device 120 may be a liquid-cooled transformer device, such as an oil-immersed transformer device. Figure 6 The structure of the transformer 1 in the oil-immersed transformer device 120 is shown by way of example.

[0100] Reference Figure 6 The transformer 1 includes a liquid storage tank 11 (for example, an oil tank), an iron core 12, and a winding 13 wound on the iron core 12. The iron core 12 and the winding 13 are both arranged in the liquid storage tank 11. The present application does not impose any specific restrictions on the shape of the iron core 12, the number of windings 13, and the winding method of the winding 13, as long as the function of voltage transformation can be achieved. In addition, in some examples, the transformer 1 may also include a clamp (attached) for clamping the iron core 12. Figure 6 Not shown), a base that plays a supporting role (attached Figure 6 Not shown), a liquid pump for liquid flow (attached Figure 6 Not shown), a conductive bar and a bushing for connecting or assisting in connecting the leads (attached Figure 6 ), etc., which are not limited in this application.

[0101] Among them, low voltage distribution cabinet 1011 (auxiliary reference Figure 2 ) through a plurality of low voltage leads 1012 and a transformer 120 (auxiliary reference Figure 2 )Electrical connection, high voltage distribution cabinet 1031 (auxiliary reference Figure 2 ) is electrically connected to the transformer device 120 through a plurality of high-voltage leads 1032. The liquid storage tank 11 is provided with a low-voltage outlet 111 and a high-voltage outlet 112. One end of the plurality of low-voltage leads 1012 is connected to the corresponding low-voltage bushing in the liquid storage tank 11, and the other end extends out of the liquid storage tank 11 through the low-voltage outlet 111, and extends into the low-voltage chamber 101 to be electrically connected to the low-voltage distribution cabinet 1011. One end of the plurality of high-voltage leads 1032 is connected to the corresponding high-voltage bushing in the liquid storage tank 11, and the other end extends out of the liquid storage tank 11 through the high-voltage outlet 112, and extends into the high-voltage chamber 103 to be electrically connected to the high-voltage distribution cabinet 1031.

[0102] In the example where the equipment box 110 includes the first partition 106 and the second partition 107 (see also Figure 3) The low-voltage outlet 111 can be located on the side of the liquid storage tank 11 facing the first partition 106, and the high-voltage outlet 112 can be located on the side of the liquid storage tank 11 facing the second partition 107, which is beneficial to the electrical connection between the transformer 1 and the low-voltage power distribution cabinet 1011 and the high-voltage power distribution cabinet 1031. In addition, the radiator 2 can be located on the side of the transformer 1 in the second direction. In this way, the space on the side of the transformer 1 is fully utilized, and the placement of the transformer 1 and the radiator 2 in the transformer chamber 102 is more reasonable. Moreover, the radiator 2 is far away from the low-voltage power distribution cabinet 1011 and the high-voltage power distribution cabinet 1031, which is beneficial to the heat dissipation of the radiator 2.

[0103] Continue to refer to Figure 6 , a liquid (for example, oil) for cooling the iron core 12 and the winding 13 is provided in the liquid storage tank 11. A chamber communicating with the internal space of the liquid storage tank 11 is provided in the radiator 2. The heat of the transformer 1 is mainly generated from the internal iron core 12 and winding 13. The liquid in the liquid storage tank 11 can submerge the iron core 12 and the winding 13 (or submerge a part of the iron core 12 and the winding 13). The radiator 2 and the liquid storage tank 11 are interconnected. The liquid in the liquid storage tank 11 will take away the heat inside the transformer 1 and then enter the radiator 2 for heat dissipation. After the liquid exchanges heat with the outside in the radiator 2, it will return to the liquid storage tank 11, and circulate in this way to achieve the heat dissipation of the transformer 1.

[0104] In addition, refer to Figure 6 , the transformer 1 may further include an adjustment tank 14 capable of adjusting the internal hydraulic pressure of the liquid storage tank 11. The adjustment tank 14 can be arranged above the liquid storage tank 11 and fixedly connected to the liquid storage tank 11. The same liquid as the liquid inside the liquid storage tank 11 is provided inside the adjustment tank 14. The adjustment tank 14 and the liquid storage tank 11 are connected through an adjustment pipe 15 (auxiliary reference Figure 4 ). An airbag 16 is provided inside the adjustment tank 14. When the internal hydraulic pressure in the liquid storage tank 11 is too high, the liquid in the liquid storage tank 11 will be squeezed into the adjustment pipe 15 and then enter the adjustment tank 14 to squeeze the airbag 16. At this time, the airbag 16 shrinks. When the internal hydraulic pressure in the liquid storage tank 11 is relatively low, the airbag 16 inside the adjustment tank 14 expands, and the hydraulic pressure inside the adjustment tank 14 will enter the liquid storage tank 11 through the adjustment pipe 15, so as to achieve the adjustment of the internal pressure of the liquid storage tank 11.

[0105] On the basis that the voltage conversion device 120 is a liquid-cooled voltage conversion device, Figure 7Exemplarily, the structure of a radiator 2 is shown, wherein the radiator 2 includes a plurality of (e.g., five) heat dissipation components 21 arranged at intervals in a first direction. Each heat dissipation component 21 includes a liquid inlet pipe 211, a liquid outlet pipe 212, and a plurality of heat dissipation fins 213 distributed at intervals in a second direction. In each heat dissipation component 21, the liquid inlet pipe 211 and the liquid outlet pipe 212 are distributed in the vertical direction. For example, the liquid inlet pipe 211 is above the liquid outlet pipe 212, and the liquid inlet pipe 211 and the liquid outlet pipe 212 in each heat dissipation component 21 are both communicated with the liquid storage tank 11. The plurality of heat dissipation fins 213 in each heat dissipation component 21 are located between the liquid inlet pipe 211 and the liquid outlet pipe 212 in this heat dissipation component 21. A heat dissipation cavity (located inside the heat dissipation fin 213 and not shown in the drawings) is provided inside each heat dissipation fin 213, and the plurality of heat dissipation fins 213 in each heat dissipation component 21 are both communicated with the liquid inlet pipe 211 and the liquid outlet pipe 212 in this heat dissipation component 21.

[0106] That is, in Figure 7 the illustrated example, the liquid in the liquid storage tank 11 will enter the corresponding heat dissipation component 21 from the plurality of liquid inlet pipes 211 respectively, that is, enter the plurality of heat dissipation fins 213 of the corresponding heat dissipation component 21, and then flow back into the liquid storage tank 11 through the liquid outlet pipe 212 of the corresponding heat dissipation component 21 to complete the heat dissipation cycle. It can be understood that the chambers of the radiator 2 include the heat dissipation cavities of each heat dissipation fin 213, the internal spaces of each liquid inlet pipe 211, and the internal spaces of each liquid outlet pipe 212.

[0107] Wherein, return Figure 4 and Figure 5 , both the first pull rod 321 and the second pull rod 322 are connected to the liquid storage tank 11. And, in order to better fix the radiator 2, the fixing component 3 may further include a third pull rod 323. For auxiliary reference Figure 7 , the third pull rod 323 is arranged between two of the heat dissipation components 21. One end of the third pull rod 323 is connected to the liquid storage tank 11, and the other end is connected to the first pressing strip 311.

[0108] The third pull rod 323 also plays a role in connecting the liquid storage tank 11 and the first pressing strip 311. The third pull rod 323 cooperates with the first pull rod 321 and the second pull rod 322 to jointly connect the first pressing strip 311 and the liquid storage tank 11, enabling the fixing component 3 to have sufficient protection ability for the radiator 2, reducing the possibility that the first pull rod 321 and the second pull rod 322 are broken or pulled off due to excessive impact (the radiator 2 impacts the first pressing strip 311 due to shaking), and further enhancing the connection stability between the radiator 2 and the liquid storage tank 11. And, when the heat dissipation components 21 on both sides of the third pull rod 323 shake towards the third pull rod 323, the third pull rod 323 can limit the shaking degree of the heat dissipation components 21, making the connection between the heat dissipation components 21 on both sides and the liquid storage tank 11 more stable.

[0109] In addition, in Figure 5 and Figure 7 the example shown, the fixing component 3 may further include a fourth tie rod 324, a fifth tie rod 325, and a sixth tie rod 326. That is, a tie rod may be provided between any two adjacent heat dissipation components 21. The first tie rod 321, the second tie rod 322... and the sixth tie rod 326 are all used to connect the liquid storage tank 11 and the first pressing strip 311, and jointly share the impact force when the radiator 2 shakes.

[0110] In addition to being fixedly connected to the transformer 1 through the structure (such as the liquid inlet pipe 211 and the liquid outlet pipe 212) communicating with the liquid storage tank 11, the radiator 2 is further fixed through the first pressing strip 311, reducing the possibility of the radiator 2 being separated from the liquid storage tank 11 and making the connection between the radiator 2 and the liquid storage tank 11 more stable.

[0111] In other examples, referring to Figure 8 , the radiator 2 may only include a liquid inlet pipe 211, a liquid outlet pipe 212, and a plurality of heat dissipation fins 213 distributed in the second direction. The liquid inlet pipe 211 and the liquid outlet pipe 212 are distributed in the vertical direction and are both communicated with the liquid storage tank 11. The plurality of heat dissipation fins 213 are located between the liquid inlet pipe 211 and the liquid outlet pipe 212. The two ends of each heat dissipation fin 213 are respectively communicated with the liquid inlet pipe 211 and the liquid outlet pipe 212. The plurality of heat dissipation fins 213 are located between the first tie rod 321 and the second tie rod 322. And, one set or more sets of the radiator 2 and the fixing component 3 in this example may be provided on the side of the transformer 1.

[0112] In some other examples, the voltage transformation device 120 may be an air-cooled voltage transformation device 120. The radiator 2 includes a plurality of heat dissipation fins arranged at intervals in the first direction, and the plurality of heat dissipation fins are fixed on the outer shell of the transformer 1. The first tie rod 321 and the second tie rod 322 are distributed in the first direction, and the plurality of heat dissipation fins are all located between the first tie rod 321 and the second tie rod 322. The first pressing strip 311 presses against the plurality of heat dissipation fins.

[0113] To further reduce the shaking amplitude of the radiator 2, in some examples, referring back to Figure 4 , the fixing component 3 further includes a second pressing strip 312. The second pressing strip 312 is located on the side of the radiator 2 away from the transformer 1. The second pressing strip 312 and the first pressing strip 311 are distributed in the vertical direction. The second pressing strip 312 is used to press against the radiator 2.

[0114] In Figure 4 the example shown, with reference to Figure 5, the second pressing strip 312 can be connected to the transformer 1 through a pull rod structure such as a seventh pull rod 327 and an eighth pull rod 328, that is, the second pressing strip 312 can be connected to the transformer 1 in the same way as the first pressing strip 311, and together with the first pressing strip 311, press against the radiator 2, reducing the possibility that a single pressing strip (for example, the first pressing strip 311) falls off due to excessive impact of the radiator 2, and playing a better fixing role for the radiator 2.

[0115] In other examples, the second pressing strip 312 can also be connected to the transformer 1 by means of a connecting rope or a chain, as long as the second pressing strip 312 can press against the radiator 2.

[0116] Figure 8 The positional relationship between the first pressing strip 311 and the second pressing strip 312 in this example is also shown. In other examples, the second pressing strip 312 can also be arranged above the first pressing strip 311, and the present application does not make specific restrictions on this.

[0117] The first pull rod 321 and the second pull rod 322 can be connected to the first pressing strip 311 in any suitable way. For example, in Figure 7 and Figure 8 In the two examples shown, the first pull rod 321 and the second pull rod 322 are both connected to the first pressing strip 311 through nuts 33, that is, the fixing assembly 3 further includes a plurality of nuts 33. The first pull rod 321 and the second pull rod 322 both pass through the first pressing strip 311 and are each threadedly connected to at least one nut 33, and the first pressing strip 311 is clamped between the plurality of nuts 33 and the radiator 2.

[0118] Among them, Figure 9 An exemplary structure in which the end of the first pull rod 321 is threadedly connected to a nut 33 is shown. In other examples, the end of the first pull rod 321 can be threadedly connected to two nuts 33 or three nuts 33. In the example where a plurality of nuts 33 are connected to the end of the first pull rod 321, except for the nut 33 that directly contacts the first pressing strip 311, the remaining nuts 33 can prevent the nut 33 that directly contacts the first pressing strip 311 from loosening.

[0119] Similarly, the end of the second pull rod 322 can also be threadedly connected to one nut 33 or a plurality of nuts 33. In the example where the first pressing strip 311 is also connected to the transformer 1 through pull rods such as a third pull rod 323 and a fourth pull rod 324, the third pull rod 323, the fourth pull rod 324 and other pull rods can also be connected to the first pressing strip 311 by connecting nuts 33 to their ends, and the present application will not elaborate here.

[0120] It can be understood that in the example of setting the second pressing strip 312, the second pressing strip 312 can also be connected to the pull rods thereon (such as the seventh pull rod 327, the eighth pull rod 328, etc. mentioned above) by means of nuts 33.

[0121] In other examples, the first pull rod 321 and the second pull rod 322 can be connected to the first pressing strip 311 by welding, and the third pull rod 323, the fourth pull rod 324, etc. can also be connected to the first pressing strip 311 by welding.

[0122] In addition, in order to reduce the possibility of the first pressing strip 311 being bent or broken, in one example, referring to Figure 9 , the cross-section of the first pressing strip 311 perpendicular to its own length direction can be in a "C" shape. In other examples, the cross-section of the first pressing strip 311 perpendicular to its own length direction can also be in other shapes. For example, Figure 10 an example is exemplarily shown in which the cross-section of the first pressing strip 311 perpendicular to its own length direction is in a "U" shape, Figure 11 an example is exemplarily shown in which the cross-section of the first pressing strip 311 perpendicular to its own length direction is in an "L" shape (the first pressing strip 311 in this example can be an angle steel). Through the above design method, the structural strength of the first pressing strip 311 can be increased.

[0123] When the radiator 2 contacts the first pressing strip 311, there is a risk that the first pressing strip 311 scratches the radiator 2. Therefore, in one example, the variable voltage device 120 further includes an elastic buffer pad 4, Figure 12 the structure of the buffer pad 4 is exemplarily shown, referring to Figure 12 , the buffer pad 4 can be arranged between the first pressing strip 311 and the radiator 2 (auxiliary reference Figures 9 to 11 ). Arranging the buffer pad 4 between the first pressing strip 311 and the radiator 2 can play a role in isolating the first pressing strip 311 and the radiator 2, and reduce the possibility that the radiator 2 is damaged, deformed or painted due to direct contact with the first pressing strip 311.

[0124] Since the first pressing strip 311 has elasticity, it can also play a buffering role. When the radiator 2 vibrates (for example, the radiator 2 vibrates during transportation or installation), the arrangement of the buffer pad 4 can reduce the impact force when the radiator 2 collides with the first pressing strip 311, and play a protective role for both the radiator 2 and the first pressing strip 311.

[0125] In one example, referring to Figure 12The buffer pad 4 is in the shape of a long strip, and the buffer pad 4 extends along the length direction of the first pressure strip 311, so that the first pressure strip 311 and the radiator 2 can be better isolated, so that there is more area between the radiator 2 and the first pressure strip 311 to set the buffer pad 4, further reducing the possibility of damage to the radiator 2 during transportation and installation of the transformer device 120. In this example, the first tie rod 321 and the second tie rod 322 will also pass through the buffer pad 4 before passing through the first pressure strip 311.

[0126] In other examples, the buffer pad 4 may be in the shape of a square sheet and may be provided in plurality, and the plurality of buffer pads 4 may be arranged at intervals along the length direction of the first pressure strip 311. In this example, the buffer pad 4 may avoid the first pull rod 321 and the second pull rod 322, or avoid other pull rods (for example, the third pull rod 323, the fourth pull rod 324, etc.).

[0127] In addition, the buffer pad 4 can be made of any suitable material, for example, the buffer pad 4 can be a rubber pad, which can not only play a buffering role, but also increase friction, thereby reducing the possibility of random movement of the first pressure strip 311. For another example, the buffer pad 4 can also be a sponge pad, which is not specifically limited in the present application.

[0128] Figure 13 The structure of another transformer 120 is shown as an example. Figure 13 In the example shown, two heat sinks 2 are provided and are located on both sides of the transformer 1 (for example, on both sides in the second direction), and both heat sinks 2 are connected to the transformer 1, wherein the heat sink 2 on one side can be reinforced on the heat sink 2 by connecting the first pressure strip 311 with the first tension rod 321 and the second tension rod 322 (in some examples, also including the third tension rod 323, the fourth tension rod 324, etc.), and the second pressure strip 312 and the first pressure strip 311 jointly fix the heat sink 2 on this side. The heat sink 2 on the other side can also be reinforced on the transformer 1 by a pressure strip structure similar to the first pressure strip 311 and the second pressure strip 312, and by corresponding tension rods, which will not be repeated in this application.

[0129] In order to further reduce the shaking amplitude of the radiator 2, in one example, Figure 13Taking the illustrated voltage transformation device 120 as an example, the voltage transformation device 120 may further include an elastic buffer column 5. The buffer column 5 is located between the transformer 1 and the radiator 2 and is fixedly connected to the transformer 1 or the radiator 2. For example, the buffer column 5 is fixed to the transformer 1. When the radiator 2 shakes towards the side of the transformer 1, the buffer column 5 plays a role in supporting the radiator 2, reducing the risk of the radiator 2 colliding with the buffer column 5. Moreover, since the buffer column 5 has elasticity, when the buffer column 5 abuts against both the radiator 2 and the transformer 1 at the same time, the amplitude of the shaking of the radiator 2 can be reduced, playing a role in stabilizing the radiator 2 and further reducing the risk of the radiator 2 being separated from the transformer 1. In other examples, the buffer column 5 may also be provided on the radiator 2.

[0130] Figure 14 Exemplarily shows the structure of the buffer column 5. Referring to Figure 14 , the buffer column 5 is a hollow structure and is internally provided with a stepped hole 51. The buffer column 5 is connected to the corresponding structure (for example, the transformer 1) by bolts. For example, in the example where the transformer 1 includes a liquid storage tank 11, the bolt passes through the stepped hole 51 and is threadedly connected to the liquid storage tank 11, and the head of the bolt abuts against and presses the stepped surface 52 of the stepped hole 51, thereby realizing the pressing and fixing of the buffer column 5.

[0131] The buffer column 5 can be made of any suitable material. For example, the buffer column 5 can be a rubber column, or a sponge column, or can also be spliced or assembled from a variety of materials. For example, a part of the buffer column 5 is a metal structure for fixing to the transformer 1, and the other part is a rubber structure for abutting against the radiator 2. In addition, in one example, the buffer column 5 can be a cylinder. Referring to Figure 13 and Figure 14 , in this example, the axis of the buffer column 5 is perpendicular to the surface of the transformer 1 used for connecting the buffer column 5. In other examples, the buffer column 5 can also be a prism, and the present application does not limit this.

[0132] In some examples, a structure for protecting the radiator 2 can also be provided. Figure 15 Exemplarily shows a protection structure for the radiator 2. For example, the voltage transformation device 120 further includes a protective cover 6. The protective cover 6 is provided on the top of the radiator 2, and the protective cover 6 plays a role in protecting the radiator 2, reducing the possibility of the radiator 2 being damaged by heavy objects falling during transportation.

[0133] In Figure 15 the illustrated example, two protective covers 6 can be provided to protect the radiators 2 on both sides. In the example where only one radiator 2 is provided (for example, Figure 4In the illustrated example), only one protective cover 6 can be provided, that is, the number of protective covers 6 can be the same as the number of radiators 2 to be protected. In other examples, the number of protective covers 6 can also be different from the number of radiators 2. It is possible that no protective cover 6 is provided on the top of some radiators 2, or multiple radiators 2 share one protective cover 6. The present application does not limit this.

[0134] Figure 16 An exemplary structure of a protective cover 6 is shown, with reference to Figure 15 , a receiving groove 61 is provided on the side of the protective cover 6 facing the radiator 2 to be protected, and the top of the radiator 2 extends into or is snapped into the receiving groove 61. The shape of the receiving groove 61 is adapted to the shape of the top of the radiator 2. For example, Figure 16 the shown receiving groove 61 is adapted to the top of Figure 13 one of the shown radiators 2. The receiving groove 61 includes a plurality of sub-grooves 611 for receiving the tops of the corresponding heat dissipation components 21 (with reference to Figure 7 ), and each sub-groove 611 includes a deep groove 6111 for receiving the liquid inlet pipe 211 and a shallow groove 6112 for receiving the heat dissipation fins 213. By extending the top of the radiator 2 into the receiving groove 61 of the protective cover 6, the top of the radiator 2 abuts against the inner wall of the receiving groove 61, reducing the risk of the protective cover 6 falling off the radiator 2 and increasing the stability during the installation of the protective cover 6.

[0135] To further fix the protective cover 6, a binding strap 62 can be provided to bind the protective cover 6 to the radiator 2. For example, with reference to Figure 15 , the binding strap 62 is wound around the outside of the protective cover 6 and the first pressing strip 311. In Figure 15 the shown example, each protective cover 6 is bound by two binding straps 62. In other examples, each protective cover 6 can be bound by one or more binding straps 62.

[0136] In addition, the material of the protective cover 6 can be selected according to requirements. For example, the protective cover 6 can be an EPE protective cover, a rubber protective cover or a sponge protective cover. The present application does not make specific limitations on this.

[0137] After the radiator 2 or the voltage transformation device 120 is installed, the protective cover 6 can be retained in the box-type substation 100, or the protective cover 6 can be disassembled to enable the radiator 2 to have a better heat dissipation effect. The present application does not limit the retention or removal of the protective cover 6 in the later stage.

[0138] As described above, it is only the specific implementation manner of the present application. However, the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claimed rights.

Claims

1. A box-type substation, characterized in that: It includes an equipment box and a transformer device arranged in the equipment box, and the transformer device includes: transformer; A radiator, the radiator being connected to the transformer and used to dissipate heat for the transformer; A fixing assembly, wherein the fixing assembly comprises a first pressure strip, a first pull rod and a second pull rod, wherein the first pressure strip is located on a side of the radiator facing away from the transformer, the first pull rod and the second pull rod are both connected to the transformer at one end and connected to the first pressure strip at the other end, the radiator is located between the first pull rod and the second pull rod, and the first pressure strip presses against the radiator.

2. The box-type substation according to claim 1, characterized in that: The transformer device further includes an elastic buffer pad, which is arranged between the first pressure strip and the heat sink.

3. The box-type substation according to claim 2, characterized in that: The buffer pad is in a strip shape and extends along the length direction of the first pressure strip.

4. The box-type substation according to any one of claims 1 to 3, characterized in that: The fixing assembly further includes a plurality of nuts. The first pull rod and the second pull rod both pass through the first pressure strip and are each threadedly connected to at least one of the nuts. The first pressure strip is clamped between the plurality of nuts and the heat sink.

5. The box-type substation according to any one of claims 1 to 3, characterized in that: The transformer includes a liquid storage tank, an iron core and a winding wound on the iron core. The iron core and the winding are both arranged in the liquid storage tank. The liquid storage tank is provided with a liquid for cooling the iron core and the winding. The radiator is provided with a chamber connected to the internal space of the liquid storage tank. The first pull rod and the second pull rod are both connected to the liquid storage tank.

6. The box-type substation according to claim 5, characterized in that: The fixing assembly further includes a third tie rod, the radiator includes a plurality of heat dissipation assemblies spaced apart along a first direction, each of the heat dissipation assemblies includes a plurality of heat dissipation fins spaced apart along a second direction, a heat dissipation cavity is provided inside each of the heat dissipation fins, the cavity of the radiator includes the heat dissipation cavity of each of the heat dissipation fins, the third tie rod is provided between two of the heat dissipation assemblies, one end of the third tie rod is connected to the liquid storage tank, and the other end is connected to the first pressure strip, The first direction and the second direction are perpendicular to each other and are both perpendicular to the vertical direction.

7. The box-type substation according to any one of claims 1 to 3, characterized in that: The fixing assembly further includes a second pressure strip, which is located on a side of the heat sink away from the transformer and connected to the transformer. The second pressure strip and the first pressure strip are distributed in a vertical direction, and the second pressure strip presses against the heat sink.

8. The box-type substation according to any one of claims 1 to 3, characterized in that: The transformer device further comprises an elastic buffer column, wherein the buffer column is located between the transformer and the radiator, and the buffer column is fixed on the transformer or the radiator.

9. The box-type substation according to any one of claims 1 to 3, characterized in that: The equipment box is provided with a low-voltage room, a transformer room and a high-voltage room distributed along a first direction, the low-voltage room and the high-voltage room are located on different sides of the transformer room, the transformer equipment is arranged in the transformer room, a low-voltage distribution cabinet is arranged in the low-voltage room, a high-voltage distribution cabinet is arranged in the high-voltage room, the low-voltage distribution cabinet and the high-voltage distribution cabinet are both electrically connected to the transformer, the transformer is used to change the voltage inputted by one of the low-voltage distribution cabinet and the high-voltage distribution cabinet, and output it to the other, the radiator is located on the side of the transformer in the second direction, The first direction and the second direction are perpendicular to each other and are both perpendicular to the vertical direction.

10. The box-type substation according to claim 9, characterized in that: The equipment box further comprises a support column arranged in the transformer chamber, the equipment box comprises a rectangular parallelepiped frame whose length direction is parallel to the first direction, the rectangular parallelepiped frame comprises four frame columns extending along the first direction, the four frame columns comprise two first frame columns distributed in the vertical direction and two second frame columns distributed in the vertical direction, The two ends of the support column are detachably connected to one of the first frame columns, or, One end of the support column is detachably connected to the higher one of the two first frame columns, and the other end of the support column is detachably connected to the higher one of the two second frame columns.

11. A transformer device, characterized in that: include: transformer; A radiator, the radiator being connected to the transformer and used to dissipate heat for the transformer; A fixing assembly, wherein the fixing assembly comprises a first pressure strip, a first pull rod and a second pull rod, wherein the first pressure strip is located on a side of the radiator facing away from the transformer, the first pull rod and the second pull rod are both connected to the transformer at one end and connected to the first pressure strip at the other end, the radiator is located between the first pull rod and the second pull rod, and the first pressure strip presses against the radiator.

12. The transformer device according to claim 11, characterized in that: The transformer device further includes an elastic buffer pad, which is arranged between the first pressure strip and the heat sink.

13. The transformer device according to claim 11 or 12, characterized in that: The transformer device further comprises an elastic buffer column, wherein the buffer column is located between the transformer and the radiator, and the buffer column is fixed on the transformer or the radiator.

14. The voltage transformation device according to claim 11 or 12, characterized in that: The transformer device further comprises a protective cover, which is arranged on the top of the radiator. A receiving groove is arranged on one side of the protective cover facing the radiator, and the top of the radiator extends into the receiving groove.

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