CN112234488B - Outdoor prefabricated substation for urban power grid transformation - Google Patents

Outdoor prefabricated substation for urban power grid transformation Download PDF

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Publication number
CN112234488B
CN112234488B CN202011250324.2A CN202011250324A CN112234488B CN 112234488 B CN112234488 B CN 112234488B CN 202011250324 A CN202011250324 A CN 202011250324A CN 112234488 B CN112234488 B CN 112234488B
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China
Prior art keywords
heat exchange
box body
transformer substation
fixed
transformer
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CN112234488A (en
Inventor
张祖生
梁晶晶
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Zhongze Electric Technology Co ltd
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Zhongze Electric Technology Co ltd
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/56Cooling; Ventilation
    • H02B1/565Cooling; Ventilation for cabinets
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26Casings; Parts thereof or accessories therefor
    • H02B1/28Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26Casings; Parts thereof or accessories therefor
    • H02B1/46Boxes; Parts thereof or accessories therefor
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26Casings; Parts thereof or accessories therefor
    • H02B1/46Boxes; Parts thereof or accessories therefor
    • H02B1/48Mounting of devices therein
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26Casings; Parts thereof or accessories therefor
    • H02B1/50Pedestal- or pad-mounted casings; Parts thereof or accessories therefor
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/54Anti-seismic devices or installations
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B7/00Enclosed substations, e.g. compact substations
    • H02B7/06Distribution substations, e.g. for urban network

Abstract

The invention relates to the technical field of power equipment, in particular to an outdoor prefabricated substation for transforming an urban power grid, which comprises a prefabricated base, a box body base and a substation box body, wherein a plurality of lower fixed sleeves and shock-absorbing seats are welded on the upper end surface of the prefabricated base, and a plurality of upper fixed rods and shock-absorbing balls are welded on the bottom end of the box body base; a transformer substation box body is fixed at the upper end of a box body base, the interior of the transformer substation box body is sequentially divided into a high-pressure chamber, a transformer chamber and a low-pressure chamber through a first galvanized plate and a second galvanized plate, a heat exchange plate is fixed at the top end of the transformer substation box body, a heat exchange container is fixed on the upper end surface of the heat exchange plate, the outer wall of the heat exchange container is communicated with a liquid inlet pipe and a liquid outlet pipe, a shed roof is fixed on the outer wall of the heat exchange container, and a plurality of heat exchange fins are fixed at the bottom end of the heat exchange plate; the heat exchange container can be adjusted to dissipate heat and cool or heat and melt a snow layer according to the change of the weather environment, and the adaptability is strong; simultaneously, the assembly is very convenient, the stability is excellent, and the shock resistance is excellent.

Description

Outdoor prefabricated substation for urban power grid transformation
Technical Field
The invention relates to the technical field of power equipment of a dispatching system, in particular to an outdoor prefabricated substation for urban power grid transformation.
Background
An outdoor prefabricated substation is a novel power supply corollary device. Along with the deepening of urban and rural power grid transformation and construction in China, a technical support product which meets the automatic development requirement of intelligent remote data acquisition of a power grid, improves power supply reliability and increases urban attractiveness needs to be designed to replace the original spider-net-type overhead incoming line product, the design is convenient to approach a load center, so that the investment of electrical equipment and cables is saved, the technical optimization of a power transmission and distribution system is realized, and the outdoor intelligent prefabricated substation has strong flexibility and reliability and is applied to an outdoor intelligent prefabricated substation which is uniformly matched with a residential community for power supply.
At present, the discovery of the fault of the automatic equipment of the transformer substation mainly depends on manual routing inspection, and the fault elimination of the automatic equipment of the transformer substation completely depends on manual on-site defect elimination; the utility model discloses an outdoor prepackage type transformer substation as patent number 201821636190.6 relates to a transformer substation, including the transformer substation body, install in the delivery pump of transformer substation body one side, the raceway of being connected with the delivery pump, with water piping connection and install in a plurality of condenser tube of the inboard top surface of transformer substation and with water piping connection and install in the spraying assembly of the outside top surface of transformer substation. The utility model has good heat dissipation effect, reduces the high temperature inside the transformer substation, and provides good working environment for the equipment inside the transformer substation; however, the utility model still has some disadvantages: heat dissipation or melting can not be carried out according to the change of the weather environment, when the weather is hot, the internal electrical devices of the transformer substation are in a high-temperature environment, short circuit fire accidents are caused, and when the weather is rainy and snowy, snow layers are easy to accumulate on the roof of the transformer substation, so that collapse accidents are caused; the impact force of a plurality of angle directions can not be buffered, and the shock resistance is poor.
Disclosure of Invention
The invention provides an outdoor prefabricated substation for urban power grid transformation, aiming at the problems in the background technology.
The invention is realized by the following technical scheme:
an outdoor prefabricated substation for urban power grid transformation comprises a prefabricated base, a box body base and a substation box body, wherein a plurality of fixing holes are formed in the periphery of the upper end surface of the prefabricated base, a first fixing bolt is installed in each fixing hole, a plurality of lower fixing sleeves and shock absorption seats are welded on the upper end surface of the prefabricated base, and a plurality of upper fixing rods and shock absorption balls are welded at the bottom end of the box body base; the upper end of box base is fixed with the transformer substation box, transformer substation box is inside cuts apart into hyperbaric chamber, transformer room and low-pressure chamber from the left right side through first galvanized sheet and second galvanized sheet in proper order, transformer substation box's top is fixed with the heat transfer board, the up end of heat transfer board is fixed with heat transfer container, heat transfer container's inside is provided with the heater strip, heat transfer container's outer wall intercommunication has feed liquor pipe and drain pipe, the feed liquor pipe with all be equipped with the electronic valve on the drain pipe, still be equipped with the vacuum pump on the feed liquor pipe, the feed liquor end of feed liquor pipe inserts to depositing inside the liquid box, heat transfer container's outer wall is fixed with the shed top, the bottom mounting of heat transfer board has a plurality of heat transfer fins, just heat transfer fin's bottom by the roof of transformer substation box passes and enters inside the transformer substation box.
As a further improvement of the scheme, the upper fixing rods and the lower fixing sleeve are arranged oppositely one by one from top to bottom, and the inner wall of the lower fixing sleeve is sleeved with the upper fixing rods.
As a further improvement of the above scheme, the outer wall of the upper fixing rod is provided with a first strip-shaped groove, the outer wall of the lower fixing sleeve is provided with a second strip-shaped groove, and a second fixing bolt is arranged inside the first strip-shaped groove and the second strip-shaped groove.
As a further improvement of the scheme, the plurality of shock absorption seats and the shock absorption balls are arranged in a vertically opposite mode, each shock absorption seat comprises a supporting block and a rubber pad, a semi-spherical groove is formed in the upper surface of each supporting block, and the rubber pads are fixed on the inner walls of the semi-spherical grooves.
As a further improvement of the scheme, the diameter of the semi-spherical groove in the shock absorption seat is larger than that of the shock absorption ball, and the shock absorption ball is made of metal materials.
As a further improvement of the scheme, the first galvanized plate and the second galvanized plate are both provided with door openings, and isolation doors are hinged in the door openings.
As a further improvement of the scheme, an access door is arranged on the front side wall of the transformer substation box body and is located in front of the transformer room, and ventilation windows are further arranged on the left side wall and the right side wall of the transformer substation box body.
As a further improvement of the above scheme, a high-voltage bus, a high-voltage circuit breaker and a voltage transformer are arranged in the high-voltage chamber; the transformer room is inside to be equipped with transformer and support frame, the indoor portion of low-voltage is female arranging and low-voltage circuit breaker including the low pressure.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, when the outdoor prefabricated substation is in a relatively hot weather, the electric devices in the outdoor prefabricated substation emit large amount of heat, the electronic valves on the liquid inlet pipe and the liquid outlet pipe can be opened, the cooling liquid in the liquid storage box is pumped into the heat exchange container from the liquid inlet pipe through the vacuum pump and then is led out through the liquid outlet pipe, and meanwhile, the bottom end of the heat exchange container is connected with the plurality of heat exchange fins through the heat exchange plate, so that the cooling liquid can rapidly bring out the heat in the outdoor prefabricated substation, thus the outdoor prefabricated substation is at a proper temperature, and short circuit and fire disasters caused by overhigh temperature are avoided; when the outdoor prefabricated substation is in rainy and snowy weather, thick snow can be accumulated on the roof of the outdoor prefabricated substation, the cooling liquid in the liquid storage tank can be extracted into the heat exchange container by using the vacuum pump, so that the heating wire is electrified and heats the cooling liquid, and the heat exchange container can heat the roof, so that the snow on the roof can be quickly melted and fall off, and the outdoor prefabricated substation can be effectively prevented from being crushed by the snow; in addition, the bottom end of the heat exchange container is connected with the plurality of heat exchange fins through the heat exchange plate, and the bottom ends of the heat exchange fins extend into the transformer substation box body, so that heat generated by electric devices in the transformer substation box body can be conducted into the heat exchange container, and finally the heat is transmitted to the shed top, the snow on the shed top can be melted, the heat is recycled, heating wires can be omitted, and the waste of electric energy is reduced; in conclusion, the heat exchange container can be adjusted to dissipate heat and cool or heat and melt a snow layer according to changes of weather environments, and the heat exchange container is high in adaptability, flexible to operate and use and has a great market prospect.
2. According to the invention, the upper end surface of the prefabricated base is also welded with a plurality of lower fixed sleeves and shock-absorbing seats, the bottom end of the box body base is welded with a plurality of upper fixed rods and shock-absorbing balls, when the outdoor prefabricated substation is assembled, the upper fixed rods and the lower fixed sleeves can be inserted in a one-to-one correspondence manner, the shock-absorbing balls and the shock-absorbing seats can be inserted in a one-to-one correspondence manner, and then the upper fixed rods and the lower fixed sleeves can be fixedly installed by utilizing second fixing bolts, so that the outdoor prefabricated substation is very convenient to assemble and has excellent stability; in addition, when the damping ball enters the upper end of the rubber pad in the damping seat, the rubber pad can buffer impact force from the damping ball in multiple angle directions, and therefore the outdoor preassembled transformer substation has excellent shock resistance.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic structural view of the present invention with the front side plate and the access door of the substation box removed;
FIG. 3 is an assembled view of the present invention with the front side plate and access door of the substation enclosure removed;
FIG. 4 is a perspective view of a pre-assembled base of the present invention;
FIG. 5 is an assembled view of the damper base according to the present invention;
fig. 6 is a schematic structural view of the heat exchange container and its peripheral components in the present invention.
The system comprises a prefabricated base 1, a box base 2, a transformer substation box 3, a fixing hole 4, a high-pressure chamber 5, a transformer chamber 6, a low-pressure chamber 7, a damping seat 8, a supporting block 801, a rubber pad 802, a hemispherical groove 803, a first fixing bolt 9, a lower fixing sleeve 10, an upper fixing rod 11, a damping ball 12, a first galvanized plate 13, a second galvanized plate 14, a heat exchange plate 15, a heat exchange container 16, a heating wire 17, a liquid inlet pipe 18, a liquid outlet pipe 19, an electronic valve 20, a vacuum pump 21, a liquid storage tank 22, a shed roof 23, a heat exchange fin 24, a first strip groove 25, a second strip groove 26, a second fixing bolt 27, a door opening 28, an isolation door 29, an access door 30 and a ventilation window 31.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
The invention will be further described with reference to fig. 1 to 6.
As shown in fig. 1, 2 and 5, an outdoor prefabricated substation for transforming an urban power grid comprises a prefabricated base 1, a box body base 2 and a substation box body 3, wherein a plurality of fixing holes 4 are formed in the periphery of the upper end surface of the prefabricated base 1, a first fixing bolt 9 is installed in each fixing hole 4, a plurality of lower fixing sleeves 10 and shock absorption seats 8 are welded on the upper end surface of the prefabricated base 1, and a plurality of upper fixing rods 11 and shock absorption balls 12 are welded at the bottom end of the box body base 2; a transformer substation box body 3 is fixed at the upper end of the box body base 2, the interior of the transformer substation box body 3 is sequentially divided into a high-voltage chamber 5, a transformer chamber 6 and a low-voltage chamber 7 from left to right through a first galvanized plate 13 and a second galvanized plate 14, and a high-voltage bus, a high-voltage circuit breaker and a voltage transformer are arranged in the high-voltage chamber 5; a transformer and a support frame are arranged in the transformer chamber 6, a low-voltage bus and a low-voltage circuit breaker are arranged in the low-voltage chamber 7, door openings 28 are formed in the first galvanized plate 13 and the second galvanized plate 14, and isolation doors 29 are hinged in the door openings 28; a heat exchange plate 15 is fixed at the top end of the substation box body 3, a heat exchange container 16 is fixed on the upper end face of the heat exchange plate 15, a heating wire 17 is arranged inside the heat exchange container 16, the outer wall of the heat exchange container 16 is communicated with a liquid inlet pipe 18 and a liquid outlet pipe 19, electronic valves 20 are arranged on the liquid inlet pipe 18 and the liquid outlet pipe 19, a vacuum pump 21 is further arranged on the liquid inlet pipe 18, the liquid inlet end of the liquid inlet pipe 18 is inserted into a liquid storage box 22, a shed roof 23 is fixed on the outer wall of the heat exchange container 16, a plurality of heat exchange fins 24 are fixed at the bottom end of the heat exchange plate 15, and the bottom ends of the heat exchange fins 24 penetrate through a top plate of the substation box body 3 and enter the substation box body 3; an access door 30 is opened to the preceding lateral wall of transformer substation box 3, and access door 30 is located the place ahead of transformer room 6, and ventilation window 31 is all still installed to the left and right lateral wall of transformer substation box 3.
As shown in fig. 3 and 4, a plurality of upper fixing rods 11 are arranged opposite to the lower fixing sleeve 10 one by one, and the upper fixing rods 11 are sleeved on the inner wall of the lower fixing sleeve 10; the outer wall of the upper fixing rod 11 is provided with a first strip-shaped groove 25, the outer wall of the lower fixing sleeve 10 is provided with a second strip-shaped groove 26, and a second fixing bolt 27 is arranged inside the first strip-shaped groove 25 and the second strip-shaped groove 26.
As shown in fig. 6, a plurality of shock absorbing seats 8 and shock absorbing balls 12 are arranged oppositely one above the other, each shock absorbing seat 8 comprises a supporting block 801 and a rubber pad 802, a hemispherical groove 803 is formed in the upper surface of the supporting block 801, and the rubber pad 802 is fixed on the inner wall of the hemispherical groove 803; the diameter of the semi-spherical groove 803 in the shock absorption seat 8 is larger than that of the shock absorption ball 12, and the shock absorption ball 12 is made of metal materials. .
When the prefabricated base is assembled, firstly, a soil pit is dug on the bottom surface, then concrete is poured on the bottom surface of the soil pit, after the concrete is completely condensed, the prefabricated base 1 is placed on the upper surface of the concrete, and a plurality of fixing holes 4 are formed in the periphery of the upper end surface of the prefabricated base 1, so that the prefabricated base 1 can be fixed on the upper surface of the concrete by using first fixing bolts 9; then, a transformer substation box body 3 is hoisted by utilizing crane equipment, a plurality of lower fixing sleeves 10 and shock-absorbing seats 8 are welded on the upper end face of the preassembled type base 1, a plurality of upper fixing rods 11 and shock-absorbing balls 12 are welded on the bottom end of the box body base 2, the upper fixing rods 11 and the lower fixing sleeves 10 at the bottom end of the box body base 2 can be inserted in an up-and-down one-to-one corresponding mode, the shock-absorbing balls 12 and the shock-absorbing seats 8 can be inserted in an up-and-down one-to-one corresponding mode, and the upper fixing rods 11 and the lower fixing sleeves 10 can be fixedly installed by utilizing second fixing bolts 27, so that the outdoor preassembled type transformer substation is very convenient to assemble, and is excellent in stability; in addition, when the damping balls 12 enter the upper ends of the rubber pads 802 in the damping seats 8, the rubber pads 802 can buffer impact forces from the damping balls 12 in multiple angular directions, so that the outdoor prefabricated substation has excellent shock resistance.
When the outdoor prefabricated substation is in a hot weather, the electric devices in the outdoor prefabricated substation emit a large amount of heat, the electronic valves 20 on the liquid inlet pipe 18 and the liquid outlet pipe 19 can be opened, the cooling liquid in the liquid storage tank 22 is pumped into the heat exchange container 16 from the liquid inlet pipe 18 through the vacuum pump 21 and then is led out from the liquid outlet pipe 19, meanwhile, the bottom end of the heat exchange container 16 is connected with the heat exchange fins 24 through the heat exchange plate 15, and the cooling liquid can rapidly take out the heat in the outdoor prefabricated substation, so that the outdoor prefabricated substation is at a proper temperature, and short circuit and fire caused by overhigh temperature are avoided; when the outdoor prefabricated substation is in rainy and snowy weather, thick snow can be accumulated on the roof of the outdoor prefabricated substation, at the moment, the cooling liquid in the liquid storage tank 22 can be extracted into the heat exchange container 16 by using the vacuum pump 21, so that the heating wire 17 is electrified and heats the cooling liquid, the heat exchange container 16 can heat the roof 23, the snow on the roof 23 can be quickly melted and fall off, and the outdoor prefabricated substation can be effectively prevented from being crushed by the snow; in addition, the bottom end of the heat exchange container 16 is connected with the plurality of heat exchange fins 24 through the heat exchange plates 15, and the bottom ends of the heat exchange fins 24 extend into the substation box body 3, so that heat generated by electric devices in the substation box body 3 can be transmitted into the heat exchange container 16 and finally transmitted to the shed roof 23, the melting of snow on the shed roof 23 is facilitated, the recycling of the heat is realized, the heating wires 17 can be omitted, and the waste of electric energy is reduced; in conclusion, the heat exchange container 16 can be adjusted to dissipate heat and cool or heat and melt a snow layer according to changes of weather environments, and the heat exchange container is high in adaptability, flexible to operate and use and has a great market prospect.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (8)

1. The utility model provides an urban power network reforms transform outdoor prepackage type transformer substation, includes prepackage type base (1), box base (2) and transformer substation box (3), its characterized in that: a plurality of fixing holes (4) are formed in the periphery of the upper end face of the preassembled base (1), a first fixing bolt (9) is installed in each fixing hole (4), a plurality of lower fixing sleeves (10) and shock absorption seats (8) are welded on the upper end face of the preassembled base (1), and a plurality of upper fixing rods (11) and shock absorption balls (12) are welded at the bottom end of the box body base (2); the upper end of the box body base (2) is fixed with the transformer substation box body (3), the interior of the transformer substation box body (3) is sequentially divided into a high-voltage chamber (5), a transformer chamber (6) and a low-voltage chamber (7) from left to right through a first galvanized plate (13) and a second galvanized plate (14), a heat exchange plate (15) is fixed at the top end of the transformer substation box body (3), a heat exchange container (16) is fixed on the upper end surface of the heat exchange plate (15), a heating wire (17) is arranged in the heat exchange container (16), the outer wall of the heat exchange container (16) is communicated with a liquid inlet pipe (18) and a liquid outlet pipe (19), the liquid inlet pipe (18) and the liquid outlet pipe (19) are both provided with electronic valves (20), the liquid inlet pipe (18) is also provided with a vacuum pump (21), the liquid inlet end of the liquid inlet pipe (18) is inserted into the liquid storage box (22), the liquid storage box (22) is internally provided with cooling liquid which can take out heat inside the outdoor prefabricated substation to play a role in heat dissipation, a shed roof (23) is fixed on the outer wall of the heat exchange container (16), a plurality of heat exchange fins (24) are fixed at the bottom end of the heat exchange plate (15), and the bottom ends of the heat exchange fins (24) penetrate through the top plate of the substation box body (3) and enter the substation box body (3).
2. The urban power grid transformation outdoor preassembled transformer substation of claim 1, characterized in that: the upper fixing rods (11) and the lower fixing sleeves (10) are vertically arranged in a one-to-one opposite mode, and the inner walls of the lower fixing sleeves (10) are sleeved with the upper fixing rods (11).
3. The urban power grid transformation outdoor preassembled transformer substation of claim 1, characterized in that: the outer wall of the upper fixing rod (11) is provided with a first strip-shaped groove (25), the outer wall of the lower fixing sleeve (10) is provided with a second strip-shaped groove (26), and a second fixing bolt (27) is arranged in the first strip-shaped groove (25) and the second strip-shaped groove (26).
4. The urban power grid transformation outdoor preassembled transformer substation of claim 1, characterized in that: the shock absorption seats (8) and the shock absorption balls (12) are arranged in a vertically opposite mode, each shock absorption seat (8) comprises a supporting block (801) and a rubber pad (802), a semi-spherical groove (803) is formed in the upper surface of each supporting block (801), and the rubber pads (802) are fixed on the inner wall of each semi-spherical groove (803).
5. The urban power grid transformation outdoor preassembled transformer substation of claim 4, wherein: the diameter of the hemispherical groove (803) in the shock absorption seat (8) is larger than that of the shock absorption ball (12), and the shock absorption ball (12) is made of metal materials.
6. The urban power grid transformation outdoor preassembled transformer substation of claim 1, characterized in that: the first galvanized plate (13) and the second galvanized plate (14) are both provided with door openings (28), and isolating doors (29) are hinged in the door openings (28).
7. The urban power grid transformation outdoor preassembled transformer substation of claim 1, characterized in that: an access door (30) has been seted up to the preceding lateral wall of transformer substation box body (3), access door (30) are located the place ahead of transformer room (6), ventilation window (31) are all still installed to the left and right lateral wall of transformer substation box body (3).
8. The urban power grid transformation outdoor preassembled transformer substation of claim 1, characterized in that: a high-voltage bus, a high-voltage circuit breaker and a voltage transformer are arranged in the high-voltage chamber (5); the transformer chamber (6) is internally provided with a transformer and a support frame, and the low-voltage chamber (7) is internally provided with a low-voltage busbar and a low-voltage circuit breaker.
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