CN111769473A - Bury chinese formula box transformer of formula wind-powered electricity generation - Google Patents

Bury chinese formula box transformer of formula wind-powered electricity generation Download PDF

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Publication number
CN111769473A
CN111769473A CN202010537876.5A CN202010537876A CN111769473A CN 111769473 A CN111769473 A CN 111769473A CN 202010537876 A CN202010537876 A CN 202010537876A CN 111769473 A CN111769473 A CN 111769473A
Authority
CN
China
Prior art keywords
pipe
box
plate
wire
inlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010537876.5A
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Chinese (zh)
Inventor
叶灿华
黄志文
夏欣
游波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huaxiang Xiangneng Technology Co Ltd
Original Assignee
Huaxiang Xiangneng Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huaxiang Xiangneng Technology Co Ltd filed Critical Huaxiang Xiangneng Technology Co Ltd
Priority to CN202010537876.5A priority Critical patent/CN111769473A/en
Publication of CN111769473A publication Critical patent/CN111769473A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • H02B7/08Underground substations
    • 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
    • H02B1/56Cooling; Ventilation
    • H02B1/565Cooling; Ventilation for cabinets

Abstract

The invention discloses a buried wind power Hua type box transformer, which comprises a box body, a high-voltage cabinet, a low-voltage cabinet, a transformer, a wire inlet pipe and a wire outlet pipe, wherein the box body is provided with a box body; the box body comprises a top plate and a bottom plate which are horizontally arranged, and a first box plate, a second box plate, a third box plate and a fourth box plate which are vertically arranged; the first box plate and the second box plate are opposite; the third box plate and the fourth box plate are opposite; the high-voltage cabinet and the low-voltage cabinet are both arranged in the box body; the transformer comprises an oil tank; the oil tank comprises a first side plate and a second side plate which are oppositely arranged; when the box transformer substation is used, the box transformer substation is arranged underground, so that the occupied area is saved, the concealment is strong, and the anti-theft capacity is greatly improved; the box body of the box transformer substation is of a full-sealing structure, can be waterproof and impermeable when being installed underground, and is high in reliability.

Description

Bury chinese formula box transformer of formula wind-powered electricity generation
Technical Field
The invention relates to the technical field of electrical equipment, in particular to a buried wind power Hua-type box transformer substation.
Background
The box transformer (hereinafter referred to as box transformer) is an electrical device in which a transformer, a high-voltage switch element and a low-voltage switch cabinet element are all arranged in a box body, and has the advantages of high integration level, convenience in installation and wide application range; the power generation system is widely installed on power stations and power load points and used for boosting or reducing the voltage of input power; the wind power box transformer is a box transformer used by a wind power plant and is also called a pre-installed substation or a pre-installed substation.
The Hua type box transformer substation is different from an European type box transformer substation and an American type box transformer substation, and the box transformer substations are divided into the American type box transformer substation, the European type box transformer substation and the Hua type box transformer substation in the current market; the American box transformer is characterized in that elements such as a transformer, a high-voltage load switch and a fuse are all placed in a transformer oil tank, and the elements are immersed in oil, so that the volume of the elements is greatly reduced, and the structure of the American box transformer is more compact; the European box transformer is characterized in that a transformer and common high-voltage electrical equipment are arranged in the same metal shell box body with a partition, so that the volume of the European box transformer is larger. The Hua type box transformer substation switch cabinet integrates the advantages of American style and European style, the shell box body is reserved, the oil tank of the transformer is arranged outside the box body, heat dissipation is facilitated, the structure is more compact than that of the European type box transformer substation, and the Guhua type box transformer substation is more and more popular in the market.
The Chinese box type transformer substation adopted by the existing wind power plant is generally arranged on the ground, and the wind power plant is generally positioned in a remote area, so that the supervision capability is weak, and the box type transformer substation has the risk of being stolen.
Disclosure of Invention
The invention mainly aims to provide a buried wind power Hua-type box transformer substation, and aims to solve the problem that the Hua-type box transformer substation adopted by the existing wind power plant is generally placed on the ground and has the risk of being stolen.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a buried wind power Hua type box transformer comprises a box body, a high-voltage cabinet, a low-voltage cabinet, a transformer, a wire inlet pipe and a wire outlet pipe;
the box body comprises a top plate and a bottom plate which are horizontally arranged, and a first box plate, a second box plate, a third box plate and a fourth box plate which are vertically arranged; the first box plate and the second box plate are opposite; the third box plate and the fourth box plate are opposite; the high-voltage cabinet and the low-voltage cabinet are both arranged in the box body;
the transformer comprises an oil tank; the oil tank comprises a first side plate and a second side plate which are oppositely arranged; mineral oil is arranged in the oil tank; the oil tank is embedded in the first box plate in a sealing manner; the first side plate is positioned in the box body; a high-voltage wiring terminal and a low-voltage wiring terminal are embedded in the first side plate; the high-voltage wiring terminal is connected to the high-voltage cabinet; the low-voltage wiring terminal is connected to the low-voltage cabinet; the second side plate is positioned outside the box body; the second side plate is also connected with a plurality of radiating fins;
the second box plate is provided with a plurality of wire outlets and a plurality of wire inlets; the bottom end of the wire inlet pipe is embedded into the wire inlet, and the outer wall of the bottom end of the wire inlet pipe is hermetically connected with the inner wall of the wire outlet; the bottom end of the wire outlet pipe is embedded into the wire outlet, and the outer wall of the bottom end of the wire outlet pipe is hermetically connected with the inner wall of the wire outlet; the inlet pipe is vertically arranged, and the top end of the inlet pipe is higher than the top plate; the wire outlet pipe is vertically arranged, and the top end of the wire outlet pipe is higher than the top plate;
the cable also comprises an incoming cable and an outgoing cable; one end of the incoming cable penetrates through the incoming pipe and is connected to the low-voltage cabinet; the other end of the incoming cable is connected with an output cable of the power station; one end of the outgoing cable penetrates through the outgoing pipe and is connected to the high-voltage cabinet; and the other end of the outgoing cable is connected with an external power transmission line.
Preferably, the device also comprises an access pipe and a cover plate; the top plate is provided with an entrance and an exit; the bottom end and the top end of the access pipe are both open; the bottom end of the inlet and outlet pipe is hermetically connected with the outer wall of the top plate; the inlet and outlet pipe is vertically covered with the inlet and outlet; the cover plate is hinged to the top end of the access pipe, and the cover plate can seal the access pipe in a sealing mode.
Preferably, the inlet and the outlet are round ports; the inlet and outlet pipe is a round pipe; the top end of the access pipe is provided with a top surface; the top surface is provided with an annular groove; the cover plate comprises an inner side surface and an outer side surface; the inner side surface is close to the top surface; the inner side surface is provided with an annular protrusion matched with the annular groove.
Preferably, the cover plate is provided with a plurality of through holes; the top surface is provided with a plurality of screw holes; the number of the through holes is consistent with that of the screw holes; the through holes correspond to the screw holes one to one;
when the cover plate rotates to the state that the inner side surface is in contact with the top surface in an attaching mode, each through hole is right opposite to the corresponding screw hole; the bolt also comprises a plurality of bolts; the number of the bolts is consistent with that of the through holes; the bolt penetrates through the through hole and is screwed into the screw hole.
Preferably, the top surface is also provided with an annular rubber layer in a fitting manner.
Preferably, a gasket is further arranged between the bolt and the outer side face.
Preferably, a vertical ladder is further arranged in the box body; the vertical ladder is connected between the bottom plate and the access.
Preferably, the wire inlet pipe comprises a wire inlet upper pipe, a wire inlet middle pipe and a wire inlet lower pipe which are sequentially communicated from top to bottom; the inlet wire upper pipe is U-shaped, and an opening of the inlet wire upper pipe faces downwards; the incoming line middle pipe is vertically arranged; the inlet wire lower pipe is a bent pipe; the open end of the incoming line lower pipe is embedded into the incoming line port; and the outer wall of the opening end of the incoming line lower pipe is hermetically connected with the inner wall of the incoming line opening.
Preferably, the number of the wire inlet and the wire outlet is 3; the quantity of inlet wire pipe with go out the spool is 3.
Preferably, the top plate is also provided with a lifting lug in a connecting manner.
Compared with the prior art, the invention at least has the following beneficial effects:
the invention provides a buried wind power Chinese box transformer substation (hereinafter referred to as box transformer substation), which is arranged underground when in use, so that the occupied area is saved, the concealment is strong, and the anti-theft capacity is greatly improved; the box body of the box transformer substation is of a full-sealing structure, can be waterproof and seepage-proof when being installed underground, and has high reliability; and because the oil tank of the transformer is arranged on the first box plate of the box body in a penetrating manner, the second side plate of the oil tank is also connected with the radiating fins, when the box transformer is arranged underground, the temperature of underground soil is lower than that of the ground, and through contact heat exchange, the radiating effect of the box transformer is good, no extra radiating device needs to be configured, the structure is simplified, and the production and manufacturing cost is saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic perspective view of an embodiment of an underground wind power hua-box type transformer substation of the present invention;
FIG. 2 is a schematic top view of an embodiment of a buried wind power Hua-type box transformer substation of the present invention;
FIG. 3 is a schematic side structure diagram of an embodiment of a buried wind power Hua-type box transformer substation according to the present invention;
FIG. 4 is an enlarged view of detail A in FIG. 3;
fig. 5 is a partial sectional view of an inlet and outlet pipe and a cover plate of an embodiment of the buried wind power hua-box type transformer substation.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a buried wind power Hua type box transformer.
Referring to fig. 1-5, an embodiment of an underground wind-power hua-type box transformer (hereinafter referred to as a box transformer substation) includes a box body 100, a high-voltage cabinet 520, a low-voltage cabinet 510, a transformer 200, an incoming line tube 300, and an outgoing line tube 400.
The box body 100 comprises a top plate 110 and a bottom plate 120 which are horizontally arranged, and a first box plate 130, a second box plate 140, a third box plate 150 and a fourth box plate 160 which are vertically arranged; the first and second boxboards 130, 140 are diametrically opposed; the third and fourth boxboards 150, 160 are diametrically opposed; the high-voltage cabinet 520 and the low-voltage cabinet 510 are both disposed in the cabinet 100. Namely, the first box plate 130, the second box plate 140, the third box plate 150, the fourth box plate 160, the top plate 110 and the bottom plate 120 are connected to form a closed box 100.
The transformer 200 includes an oil tank; the oil tank comprises a first side plate 210 and a second side plate 220 which are oppositely arranged; mineral oil is arranged in the oil tank, namely the transformer 200 is an oil-immersed transformer and depends on the mineral oil in the oil tank for heat dissipation, and the working principle of the transformer is not described again; the oil tank is embedded in the first tank plate 130 in a sealing manner; the first side plate 210 is located inside the case 100; a high-voltage terminal (not shown) and a low-voltage terminal (not shown) are embedded in the first side plate 210; the high-voltage wiring terminal is connected to the high-voltage cabinet 520 through a cable; the low-voltage wiring terminal is connected to the low-voltage cabinet 510 through a cable; the second side plate 220 is positioned outside the case 100; the second side plate 220 is also connected with a plurality of heat radiating fins 230. When the box transformer substation is installed underground, the oil tank and the radiating fins 230 can be in full contact with underground soil to exchange heat, and heat dissipation is facilitated.
The second box plate 140 is provided with a plurality of outlet ports 142 and a plurality of inlet ports 141; the bottom end of the wire inlet pipe 300 is embedded into the wire inlet 141, and the outer wall of the bottom end of the wire inlet pipe 300 is hermetically connected (welded) with the inner wall of the wire outlet 142; the bottom end of the outlet pipe 400 is embedded into the outlet 142, and the outer wall of the bottom end of the outlet pipe 400 is hermetically connected (welded) with the inner wall of the outlet 142; the wire inlet pipe 300 is vertically arranged, and the top end of the wire inlet pipe 300 is higher than the top plate 110; the wire outlet pipe 400 is vertically arranged, and the top end of the wire outlet pipe 400 is higher than the top plate 110.
The box transformer further comprises an incoming cable (not shown) and an outgoing cable (not shown); one end of the incoming cable penetrates through the incoming pipe 300 and is connected to the low-voltage cabinet 510; the other end of the incoming cable is connected with an output cable of the power station; one end of the outgoing cable penetrates through the outgoing line pipe 400 and is connected to the high-voltage cabinet 520; the other end of the outgoing cable is connected with an external power transmission line, and the box transformer substation is applied to a wind power plant and used as a voltage boosting box transformer substation to boost the electric energy of the wind power plant and then transmit the boosted electric energy to the power transmission line.
Through setting up inlet wire pipe 300 and outlet wire pipe 400, arrange the inlet wire cable of case transformer substation in inlet wire pipe 300, arrange the outlet wire cable of case transformer substation in outlet wire pipe 400, when the case transformer substation installed in the underground, inlet wire pipe 300 all stretched out in ground with outlet wire pipe 400, set up like this, can strengthen the waterproof sealing nature of the underground part of case transformer substation, prevent groundwater infiltration box 100, promote this case transformer substation's job durability and stability.
When the buried wind power Hua type box transformer substation is used, the box transformer substation is installed underground, so that the occupied area is saved, the concealment is strong, and the anti-theft capacity is greatly improved; the box body 100 of the box transformer substation is of a full-sealing structure, can be waterproof and seepage-proof when being installed underground, and has high reliability; and because the oil tank of the transformer 200 is arranged on the first box plate 130 of the box body 100 in a penetrating manner, and the second side plate 220 of the oil tank is also connected with the radiating fins 230, when the box transformer is arranged underground, the temperature of underground soil is lower than that of the ground, and through contact heat exchange, the radiating effect of the box transformer is good, no extra radiating device needs to be configured, the structure is simplified, and the production and manufacturing cost is saved.
In addition, as shown in fig. 1, 3 and 5, the box transformer further comprises an access pipe 710 and a cover plate 720; the top plate 110 is provided with an entrance 111; the bottom end and the top end of the access pipe 710 are both open; the bottom end of the inlet/outlet pipe 710 is hermetically connected (welded) with the outer wall of the top plate 110; the inlet and outlet pipe 710 vertically covers the inlet and outlet 111; the cover plate 720 is hinged to the top end of the access pipe 710, and the cover plate 720 can seal the access pipe 710. Through above-mentioned technical scheme, when the case becomes to install in the underground, the top of discrepancy pipe 710 stretches out in ground and apart from ground take the altitude (preferred 30cm), the maintainer of being convenient for comes in and goes out box 100 in order to maintain the case and become, be different from the tradition articulate the apron 720 in the mode of the roof 110 that the case becomes, traditional apron 720 buries underground, the easy infiltration, and the apron 720 of this scheme is located on the ground for box 100's leakproofness is better, and waterproof performance is better.
Meanwhile, the inlet and outlet 111 is a circular opening; the inlet and outlet pipe 710 is a circular pipe; a top surface 711 is formed at the top end of the inlet/outlet pipe 710; the top surface 711 is provided with an annular groove 712; cover plate 720 includes an inner side 721 and an outer side 723; medial side 721 is adjacent top 711; the inner side surface 721 is provided with an annular protrusion 724 that fits the annular groove 712; when the cover plate 720 is rotated until the inner side surface 721 comes into close contact with the top surface 711, the annular protrusion 724 is fitted into the annular groove 712. This arrangement provides better sealing of the cover plate 720 over the access tube 710.
Meanwhile, the cover plate 720 is provided with a plurality of through holes 723; the top surface 711 is provided with a plurality of screw holes 713; the number of the through holes 723 is the same as that of the screw holes 713; the through holes 723 correspond to the screw holes 713 one to one. When the cover plate 720 rotates until the inner side surface 721 contacts the top surface 711, each through hole 723 is opposite to the corresponding screw hole 713; a plurality of bolts 730; the number of bolts 730 is the same as the number of through holes 723; the bolt 730 is inserted through the through hole 723 and screwed into the screw hole 713.
Through above-mentioned technical scheme for when apron 720 covers the top of discrepancy pipe 710, connect inseparabler, sealing performance is better, and water-proof effects is better.
In addition, an annular rubber layer (not shown) is attached to the top surface 711. By providing an annular rubber layer, the seal of the connection between the cover plate 720 and the access tube 710 is further increased. And a gasket 740 is also provided between the bolt 730 and the outer side 723. By providing the spacer 740, the contact area can be increased, the pressure can be dispersed, and the bolt 730 can be prevented from loosening.
In addition, a vertical ladder (not shown) is also provided in the cabinet 100; the vertical ladder is connected between the bottom plate 120 and the entrance 111, so that the maintainers can conveniently enter and exit the box body.
In addition, as shown in fig. 1 and fig. 2, the incoming line pipe 300 includes an incoming line upper pipe 310, an incoming line middle pipe 320, and an incoming line lower pipe 330 that are sequentially communicated from top to bottom; the upper inlet pipe 310 is U-shaped, and the opening of the upper inlet pipe 310 faces downwards (to prevent rainwater from entering); the incoming line middle pipe 320 is vertically arranged; the incoming lower tube 330 is a 90 degree elbow; the open end of the incoming line lower pipe 330 is embedded into the incoming line port 141; and the outer wall of the open end of the incoming line lower pipe 330 is hermetically connected (welded) with the inner wall of the incoming line port 141.
Through the technical scheme, the structure of the wire inlet pipe 300 is perfected, so that the connection sealing performance between the wire inlet pipe 300 and the box body 100 is better.
The wire outlet pipe 400 comprises a wire outlet upper pipe 410, a wire outlet middle pipe 420 and a wire outlet lower pipe 430 which are sequentially communicated from top to bottom; the upper outgoing pipe 410 is U-shaped, and the opening of the upper outgoing pipe 410 faces downwards (to prevent rainwater from entering); the outlet middle pipe 420 is vertically arranged; the outlet lower pipe 430 is a 90-degree elbow; the open end of the outlet lower tube 430 is embedded into the outlet 142; and the outer wall of the open end of the outlet lower tube 430 is hermetically connected (welded) with the inner wall of the outlet 142.
Through the technical scheme, the structure of the wire outlet pipe 400 is perfected, so that the connection sealing performance between the wire outlet pipe 400 and the box body 100 is better.
Meanwhile, the box transformer substation generally adopts three-phase power, so that the number of the incoming line ports 141 and the outgoing line ports 142 is 3; the number of the inlet pipes 300 and the outlet pipes 400 is 3.
In addition, the top plate 110 is also provided with a lifting lug (not shown) in a connecting manner, so that the box transformer substation is convenient to hoist and transport.
Meanwhile, as shown in fig. 1 to 4, the box-type substation further comprises a ventilation pipe 600, an axial flow fan 810, a moisture absorption grating 820, a floating ball 640, a connecting pipe 630, a connecting rod 650 and a sealing plate 660; the ventilation pipe 600 comprises a ventilation middle pipe 620 and a ventilation upper pipe 610 communicated with the ventilation middle pipe 620, the ventilation upper pipe 610 is a U-shaped pipe, the opening of the ventilation upper pipe 610 faces downwards (the external rainwater immersion is reduced), the fourth box plate 160 is provided with a vent 161, the vent 161 is communicated with a connecting pipe 630, the outer wall of the connecting pipe 630 is hermetically connected (welded) with the inner wall of the vent 161, the other end of the connecting pipe 630 is communicated with the ventilation middle pipe 620, the ventilation middle pipe 620 is a circular pipe, the connecting pipe 630 still has a certain distance (at least 30cm) from the bottom end of the ventilation middle pipe 620, the floating ball 640 is located at the inner bottom of the ventilation middle pipe 620, the difference between the diameter of the floating ball 640 and the inner diameter of the ventilation middle pipe 620 is less than 2mm (preferably 2mm in this embodiment, in order to reduce the shaking of the floating ball 640), the sealing plate 660 is hinged to the inner wall, the other end of the link 650 is hinged to the middle of the sealing plate 660.
The axial flow fan 810 is disposed inside the downward opening of the upper ventilation pipe 610, and the moisture absorption grill 820 is disposed inside the upper ventilation pipe 610 and above the axial flow fan 810.
Through above-mentioned technical scheme, can realize the ventilation to box 100, because of the underground environment is shady and cool relatively, when the air is more moist in box 100, the condensation phenomenon easily appears in box 100, cause the potential safety hazard to the normal operating of the electrical equipment of box, in order to prevent this type of condition, deal with the inside duty ventilation of box 100, and because of moisture absorption grid 820, can dry the air that gets into in box 100, in order to keep the drying of the air in box 100, prevent the condensation phenomenon.
The air introduced from the outside can be discharged out of the case 100 through the inlet duct 300 and the outlet duct 400, thereby achieving circulation of the air. And through setting up floater 640, connecting rod 650 and closing plate 660, when external rainwater invaded ventilation well pipe 620, the rainwater can gather in the bottom of ventilation well pipe 620, and along with the rainwater of gathering increases, floater 640 rises, and then promotes closing plate 660 and rotates and seal up the sealed even pipe 630 to prevent that the rainwater of gathering from soaking in box 100, promoted the operational reliability and the stability that this case becomes.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. A buried wind power Hua type box transformer is characterized by comprising a box body, a high-voltage cabinet, a low-voltage cabinet, a transformer, a wire inlet pipe and a wire outlet pipe;
the box body comprises a top plate and a bottom plate which are horizontally arranged, and a first box plate, a second box plate, a third box plate and a fourth box plate which are vertically arranged; the first box plate and the second box plate are opposite; the third box plate and the fourth box plate are opposite; the high-voltage cabinet and the low-voltage cabinet are both arranged in the box body;
the transformer comprises an oil tank; the oil tank comprises a first side plate and a second side plate which are oppositely arranged; mineral oil is arranged in the oil tank; the oil tank is embedded in the first box plate in a sealing manner; the first side plate is positioned in the box body; a high-voltage wiring terminal and a low-voltage wiring terminal are embedded in the first side plate; the high-voltage wiring terminal is connected to the high-voltage cabinet; the low-voltage wiring terminal is connected to the low-voltage cabinet; the second side plate is positioned outside the box body; the second side plate is also connected with a plurality of radiating fins;
the second box plate is provided with a plurality of wire outlets and a plurality of wire inlets; the bottom end of the wire inlet pipe is embedded into the wire inlet, and the outer wall of the bottom end of the wire inlet pipe is hermetically connected with the inner wall of the wire outlet; the bottom end of the wire outlet pipe is embedded into the wire outlet, and the outer wall of the bottom end of the wire outlet pipe is hermetically connected with the inner wall of the wire outlet; the inlet pipe is vertically arranged, and the top end of the inlet pipe is higher than the top plate; the wire outlet pipe is vertically arranged, and the top end of the wire outlet pipe is higher than the top plate;
the cable also comprises an incoming cable and an outgoing cable; one end of the incoming cable penetrates through the incoming pipe and is connected to the low-voltage cabinet; the other end of the incoming cable is connected with an output cable of the power station; one end of the outgoing cable penetrates through the outgoing pipe and is connected to the high-voltage cabinet; and the other end of the outgoing cable is connected with an external power transmission line.
2. The buried wind-powered Huacheng transformer substation of claim 1, further comprising an inlet and outlet pipe and a cover plate; the top plate is provided with an entrance and an exit; the bottom end and the top end of the access pipe are both open; the bottom end of the inlet and outlet pipe is hermetically connected with the outer wall of the top plate; the inlet and outlet pipe is vertically covered with the inlet and outlet; the cover plate is hinged to the top end of the access pipe, and the cover plate can seal the access pipe in a sealing mode.
3. The buried wind-powered Huacheng transformer substation of claim 2, wherein the access port is a circular port; the inlet and outlet pipe is a round pipe; the top end of the access pipe is provided with a top surface; the top surface is provided with an annular groove; the cover plate comprises an inner side surface and an outer side surface; the inner side surface is close to the top surface; the inner side surface is provided with an annular protrusion matched with the annular groove.
4. The buried wind-powered Huacheng transformer substation of claim 3, wherein the cover plate is provided with a plurality of through holes; the top surface is provided with a plurality of screw holes; the number of the through holes is consistent with that of the screw holes; the through holes correspond to the screw holes one to one;
when the cover plate rotates to the state that the inner side surface is in contact with the top surface in an attaching mode, each through hole is right opposite to the corresponding screw hole; the bolt also comprises a plurality of bolts; the number of the bolts is consistent with that of the through holes; the bolt penetrates through the through hole and is screwed into the screw hole.
5. The buried wind-power Hua-type box transformer substation of claim 3, wherein the top surface is further provided with an annular rubber layer in an attached manner.
6. The buried wind-powered Huacheng transformer substation of claim 4, wherein a gasket is further arranged between the bolt and the outer side surface.
7. The buried wind-power Hua-type box transformer substation according to claim 2, wherein a vertical ladder is further arranged in the box body; the vertical ladder is connected between the bottom plate and the access.
8. The buried wind-powered Huacheng transformer substation of claim 1, wherein the wire inlet pipe comprises a wire inlet upper pipe, a wire inlet middle pipe and a wire inlet lower pipe which are sequentially communicated from top to bottom; the inlet wire upper pipe is U-shaped, and an opening of the inlet wire upper pipe faces downwards; the incoming line middle pipe is vertically arranged; the inlet wire lower pipe is a bent pipe; the open end of the incoming line lower pipe is embedded into the incoming line port; and the outer wall of the opening end of the incoming line lower pipe is hermetically connected with the inner wall of the incoming line opening.
9. The buried wind-power Hua-Box type transformer substation of claim 1, wherein the number of the wire inlets and the number of the wire outlets are 3; the quantity of inlet wire pipe with go out the spool is 3.
10. The buried wind-power Hua-Box type transformer according to any one of claims 1 to 9, wherein the top plate is further provided with a lifting lug in a connecting manner.
CN202010537876.5A 2020-06-12 2020-06-12 Bury chinese formula box transformer of formula wind-powered electricity generation Pending CN111769473A (en)

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