CN115133443B - Bury case with pit box autogenous pressure formula compaction contact and become - Google Patents
Bury case with pit box autogenous pressure formula compaction contact and become Download PDFInfo
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- CN115133443B CN115133443B CN202210940277.7A CN202210940277A CN115133443B CN 115133443 B CN115133443 B CN 115133443B CN 202210940277 A CN202210940277 A CN 202210940277A CN 115133443 B CN115133443 B CN 115133443B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/46—Boxes; Parts thereof or accessories therefor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/46—Boxes; Parts thereof or accessories therefor
- H02B1/48—Mounting of devices therein
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B7/00—Enclosed substations, e.g. compact substations
- H02B7/06—Distribution substations, e.g. for urban network
- H02B7/08—Underground substations
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformer Cooling (AREA)
Abstract
The invention discloses a buried box transformer in self-pressing type pressing contact with a pit box body, wherein an enclosed cavity formed by a partition plate and a metal pit box is filled with insulating liquid, the insulating liquid and the metal pit box are integrally arranged, enough air gaps between the wall of the insulating liquid and the pit box are reduced to form benign convection, the occupied space of the metal pit box is favorably reduced, and an insulating liquid circulating cooling pipeline is formed among an oil inlet pipe, a first corrugated heat exchange pipe, a third corrugated heat exchange pipe, a second corrugated heat exchange pipe and an oil return pipe, so that the three-stage cooling treatment of the insulating liquid is realized, the heat dissipation of the insulating liquid is rapid, and the heat dissipation effect of the insulating liquid is improved.
Description
Technical Field
The invention relates to the technical field of underground box-type transformers, in particular to an underground box-type transformer in self-pressing type pressing contact with a pit box body.
Background
At present, the buried box transformer is one of the more commonly used transformers, the transformer is mainly buried in the buried box, the structure can greatly save the space above the ground, but the transformer body is completely buried below the ground, so the heat generated by the transformer during working is easily restricted in the narrow space between the transformer body and the buried box.
The traditional underground transformer radiates heat through flowing of insulating liquid filled inside, heat generated by an iron core and a winding can be absorbed through the insulating liquid and then transferred to an insulating liquid shell wall, the underground transformer enables the underground transformer to be in natural convection contact with ambient air by means of radiation of the insulating liquid shell wall, air convection heat exchange cooling is achieved, the radiating effect of the underground transformer is enabled to be dependent on the metal area of the insulating liquid shell wall, and the insulating liquid shell wall and a pit box have enough air gaps to form good convection.
When the heat dissipation effect of the traditional underground transformer is improved, the heat dissipation of the transformer is in direct proportion to the capacity of insulating liquid, along with the increase of the capacity of the insulating liquid, the surface area of the transformer needs to be increased relatively, so that the appearance of the transformer is extremely large, and in addition, enough air gaps need to be reserved in a narrow space of a pit box, so that the occupied space of the pit box is increased; meanwhile, the air fluidity in a narrow space of the pit box is poor, and the heat dissipation effect of the transformer is affected.
In the prior art, as in patent CN113224678B, "a landscape pavilion type underground box transformer station", a ventilation and heat dissipation system is disposed in a pit protection box, and according to the principle that hot air rises and cold air sinks, a natural convection space is formed on the basis of fully utilizing the limited installation space of the pit protection box, so as to form a good gas convection effect, so that heat can be rapidly discharged, the temperature of a transformer can be stabilized, and the operation safety of the underground transformer can be ensured; however, the following defects exist in the practical process: the ventilation and heat dissipation system is arranged in an air gap reserved in a narrow space of the pit protection box, the occupied space of the pit protection box can be increased, the ventilation and heat dissipation system is arranged between the outer protection box and the core protection box, heat generated by the transformer is accumulated in the core protection box in advance, heat is dissipated through a convection air port formed in the core protection box, convection ventilation is used for air cooling heat exchange of the wall of the insulating fluid casing, heat dissipation inside the insulating fluid is slow, and the heat dissipation effect is poor.
Disclosure of Invention
The invention aims to provide a buried box transformer in self-pressing contact with a pit box body, which is used for solving the problem that the occupied space of the pit box is increased due to heat dissipation of a transformer and the problem that the heat dissipation in an insulating liquid is slow.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a bury case with pit box autogenous pressure formula contact and become, is including burying the metal pit case in the pit underground, the baffle of integrative structure is equipped with in the metal pit incasement, it has insulating liquid to fill in the closed cavity that baffle and metal pit case enclose, the top mouth end of metal pit case becomes the cabinet through a plurality of locking mechanical system connecting box, on the both sides inner wall of case becomes the cabinet respectively fixed connection one-level cold water tank and tertiary cold water tank, just the second grade tuber pipe is installed at the top that the case becomes the cabinet, be provided with ripple heat exchange tube one in the one-level cold water tank, be provided with ripple heat exchange tube three in the diode tuber pipe, be provided with ripple heat exchange tube two in the tertiary cold water tank, loop through the tube coupling between ripple heat exchange tube one, ripple heat exchange tube three and the ripple heat exchange tube two, the one end of ripple heat exchange tube one is passed through the tube coupling circulating pump, the inlet pipe is connected to the circulating pump of entrance point and is advanced oil pipe, the one end that the circulating pump was kept away from to advance oil pipe runs through the baffle and stretches out downwards, the one end that ripple heat exchange tube three is kept away from the ripple heat exchange tube is connected with one end of oil pipe and is returned oil pipe, the baffle runs through and stretches out downwards, the other end that returns oil pipe and stretches out downwards.
As a further scheme of the invention: and the pipe orifice ends at two sides of the secondary air pipe are respectively communicated with an air port arranged on the box transformer substation cabinet, and a dustproof net is arranged in the air port.
As a further scheme of the invention: the outside of case becomes the cabinet is provided with the fan, the fan is installed on the weather shield, and weather shield body structure connects case and becomes the cabinet, just the fan is used for disturbing the wind and flows into in the wind gap.
As a further scheme of the invention: and a plurality of gravity heat pipes are inserted and installed on the first-stage cold water tank and the third-stage cold water tank, and the heat dissipation ends of the gravity heat pipes extend out of the box transformer substation cabinet.
As a further scheme of the invention: the locking mechanism comprises an arc-shaped locking block, a reset spring and a supporting plate, the supporting plate is obliquely arranged on the bottom wall of the box transformer substation cabinet, the supporting plate is connected with the arc-shaped locking block through the reset spring, and the arc-shaped locking block is used for being inserted into a lock hole formed in the top end of the metal pit box.
As a further scheme of the invention: the anti-seepage liquid plate is arranged between the top opening end of the metal pit box and the bottom end face of the box transformer substation cabinet, the anti-seepage liquid plate is embedded at the top opening position of the pit, a plurality of inserting rods are uniformly distributed on the bottom end face of the box transformer substation cabinet, and the inserting rods are used for inserting and connecting the anti-seepage liquid plate.
As a further scheme of the invention: the bottom of the box transformer substation cabinet is provided with a sealing platform of an integrated structure, the sealing platform is in a conical platform shape, a sealing sleeve is sleeved on the sealing platform, and the sealing platform is connected with the top opening end of the metal pit box in a sealing mode through the sealing sleeve.
As a further scheme of the invention: install level sensor and temperature sensor are inserted respectively on the interior diapire of case becomes cabinet, level sensor and temperature sensor's response end is equallyd divide and is run through the baffle respectively and stretch out downwards, level sensor and temperature sensor are equallyd divide do not electric connection controller.
As a further scheme of the invention: an integral structure is connected with an oil supplementing pipe on the oil return pipe, and the oil supplementing pipe penetrates through the pipe orifice end of the box transformer substation cabinet and is inserted and connected with a sealing cap.
As a further scheme of the invention: the oil inlet pipe is provided with a solenoid valve, and the solenoid valve is electrically connected with the controller.
The invention has the beneficial effects that:
(1) The insulating liquid is filled in the closed cavity formed by the partition board and the metal pit box in a surrounding mode, heat generated by the working of the transformer is absorbed by the insulating liquid, the absorbed heat is conveniently and directly transferred to the ground through the contacted metal pit box, continuous heat dissipation between the metal pit box and the ground is realized, in addition, the insulating liquid and the metal pit box are integrally arranged, the situation that the wall of the insulating liquid shell has enough air gaps with the metal pit box to form good convection is reduced, and the occupied space of the metal pit box is favorably reduced;
(2) Under the slow condition of metal hole case and ground heat dissipation, the circulating pump is through advancing oil pipe and taking out from fluid in the insulating liquid oil pocket, fluid gets into in the one-level cold water tank in advance, carry out one-level cooling heat dissipation through ripple heat exchange tube one and cooling water liquid, one-level refrigerated fluid is carried to ripple heat exchange tube three in, be convenient for carry out second grade forced air cooling heat dissipation, second grade forced air cooling fluid is carried to ripple heat exchange tube two in, carry out tertiary cooling heat dissipation through ripple heat exchange tube two and cooling water liquid, make the insulating liquid circulation of high temperature carry out tertiary cooling and handle, obtain low temperature insulating liquid fast and get into the insulating liquid oil cavity that baffle and metal hole case enclose through returning oil pipe, realize insulating liquid heat dissipation rapidly, improve insulating liquid radiating effect.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a sectional view of the interior of the box-to-substation cabinet of the present invention;
FIG. 3 is a schematic cross-sectional view of a metal crate of the present invention;
FIG. 4 is a schematic cross-sectional view of a box transformer substation cabinet of the present invention;
FIG. 5 is a schematic view of the locking mechanism between the metal pit box and the box-to-transformer cabinet of the present invention;
FIG. 6 is a schematic cross-sectional view of a primary cold water tank of the present invention;
fig. 7 is a schematic cross-sectional view of a secondary air duct of the present invention.
In the figure: 1. a pit; 2. a metal pit box; 200. a lock hole; 3. a partition plate; 4. a box transformer substation cabinet; 5. a primary cold water tank; 6. a tertiary cold water tank; 7. a corrugated heat exchange tube I; 8. a corrugated heat exchange tube II; 9. a circulation pump; 10. an oil inlet pipe; 11. a secondary air duct; 12. a corrugated heat exchange tube III; 13. an oil return pipe; 14. a gravity heat pipe; 15. a tuyere; 16. a dust screen; 17. a rain shield; 18. a fan; 19. a liquid seepage prevention plate; 20. inserting a rod; 21. a sealing table; 22. sealing sleeves; 23. an arc-shaped locking block; 24. a return spring; 25. a support plate; 26. a controller; 27. a liquid level sensor; 28. a temperature sensor; 29. supplementing an oil pipe; 30. a sealing cap; 31. an electromagnetic valve.
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.
In the description of the present invention, it is to be understood that the terms indicating an orientation or positional relationship are based on the orientation or positional relationship shown in the drawings only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention; in the description of the present invention, "plurality" means at least two, such as two, three, etc., unless specifically limited otherwise.
Referring to fig. 1-7, the invention relates to a self-pressing type pressing contact buried box transformer with a pit box body, which comprises a metal pit box 2 buried in a pit 1, wherein a partition plate 3 with an integrated structure is arranged in the metal pit box 2, an enclosed cavity enclosed by the partition plate 3 and the metal pit box 2 is filled with insulating liquid, the insulating liquid adopts environment-friendly insulating vegetable oil, the insulating liquid can be prevented from leaking abnormally from the metal pit box 2 and does not influence the soil environment of the pit 1, an insulating liquid filling cavity is enclosed by the partition plate 3 and the metal pit box 2, an iron core and a winding of a transformer assembly are convenient to install and arrange on the partition plate 3, heat generated by the transformer during working is absorbed by the insulating liquid, the absorbed heat is convenient to be directly transferred to the ground through the contacted metal pit box 2, continuous heat dissipation between the metal pit box 2 and the ground is realized, in addition, the insulating liquid and the metal pit box 2 are integrally arranged, so that enough air gaps between the insulating liquid and the pit 1 box are reduced to form benign convection, and the occupied space of the metal pit box 2 is favorably reduced.
When the metal pit box 2 and the box-type substation cabinet 4 are installed, an anti-seepage liquid plate 19 is arranged between the top end of the metal pit box 2 and the bottom end face of the box-type substation cabinet 4, the anti-seepage liquid plate 19 is embedded in the top opening of the pit 1, a plurality of insertion rods 20 are uniformly distributed on the bottom end face of the box-type substation cabinet 4, the insertion rods 20 are used for being inserted and connected with the anti-seepage liquid plate 19, surface water liquid can be prevented from entering the metal pit box 2 through the arranged anti-seepage liquid plate 19, the box-type substation cabinet 4 is convenient to position and install with the anti-seepage liquid plate 19 through the insertion rods 20, a sealing table 21 of an integrated structure is arranged at the bottom of the box-type substation cabinet 4, the sealing table 21 is in a conical table shape, a sealing sleeve 22 is sleeved on the sealing table 21, the sealing table 21 is connected with the top opening end of the metal pit box 2 through the sealing sleeve 22, the box-type substation cabinet 4 is installed with the metal pit box 2 in a pressing mode, the sealing table 21 and the sealing sleeve 22 are used for sealing the top opening end of the metal pit box 2, and further enhancing the sealing effect that anti-seepage liquid enters the metal pit box 2.
In the process of installing the box transformer substation cabinet 4 and the metal pit box 2 in a pressing contact manner, the top opening end of the metal pit box 2 is connected with the box transformer substation cabinet 4 through a plurality of locking mechanisms, each locking mechanism comprises an arc-shaped locking block 23, a reset spring 24 and a supporting plate 25, the supporting plate 25 is obliquely arranged on the bottom wall of the box transformer substation cabinet 4, the supporting plate 25 is connected with the arc-shaped locking block 23 through the reset spring 24, the arc-shaped locking block 23 is used for being inserted into a locking hole 200 formed in the top opening end of the metal pit box 2, the arc-shaped locking block 23 included in each locking mechanism can elastically extend out or retract along a sealing table 21 and a sealing sleeve 22, when the arc-shaped locking block 23 is extruded by the reset spring 24 to extend out, the arc-shaped locking block 23 is convenient to lock the locking hole 200 formed in the top opening end of the metal pit box 2, and the box 4 and the metal pit box 2 are pressed and self-locked; when the box transformer substation cabinet 4 on the metal pit box 2 is disassembled, the box transformer substation cabinet 4 is lifted upwards, and the arc-shaped locking block 23 can be extruded and retracted along the inner wall of the metal pit box 2, so that the box transformer substation cabinet 4 and the metal pit box 2 are released from being pressed and connected in a self-locking mode.
The box becomes on the both sides inner wall of cabinet 4 respectively fixed connection one-level cold water tank 5 and tertiary cold water tank 6, and second grade tuber pipe 11 is installed at the top of box transformer cabinet 4, be provided with ripple heat exchange tube one 7 in the one-level cold water tank 5, be provided with ripple heat exchange tube three 12 in the second grade tuber pipe 11, be provided with ripple heat exchange tube two 8 in the tertiary cold water tank 6, ripple heat exchange tube one 7, loop through the tube coupling between ripple heat exchange tube three 12 and the ripple heat exchange tube two 8, the one end of ripple heat exchange tube one 7 is through tube coupling circulating pump 9, the entrance point of circulating pump 9 connects into oil pipe 10, the one end that advances oil pipe 10 and keep away from circulating pump 9 runs through baffle 3 and stretches out downwards, the one end that ripple heat exchange tube three 8 kept away from ripple heat exchange tube three 12 is connected back oil pipe 13, the other end that returns oil pipe 13 runs through baffle 3 and stretches out downwards, advance oil pipe 10, ripple heat exchange tube one 7, ripple heat exchange tube three 12, form insulating liquid circulation cooling tube between ripple heat exchange tube two 8 and the oil pipe 13.
The temperature sensor 28 is inserted and installed on the inner bottom wall of the box transformer substation cabinet 4, the sensing ends of the temperature sensor 28 respectively penetrate through the partition plate 3 and extend downwards, the temperature sensor 28 is electrically connected with the controller 26, the controller 26 is an S7-300PLC controller 26, the temperature sensor 28 is a pt100 temperature sensor 28, the temperature in an insulating liquid oil cavity formed by the partition plate 3 and the metal pit box 2 is monitored in real time through the temperature sensor 28, under the condition that the metal pit box 2 slowly dissipates heat with the ground, the electromagnetic valve 31 on the oil inlet pipe 10 is controlled to be opened through the controller 26, the circulating pump 9 is controlled to work through the controller 26, the circulating pump 9 pumps oil from the insulating liquid oil cavity through the oil inlet pipe 10, the oil enters the primary cold water tank 5 in advance, primary cooling heat dissipation is performed through the corrugated heat exchange pipe I7 and cooling water liquid, the primary cooling oil is conveyed into the corrugated heat exchange pipe III 12 to facilitate secondary air cooling heat dissipation, the secondary air cooling oil is conveyed into the corrugated heat exchange pipe II 8, tertiary cooling heat dissipation is performed through the oil return through the corrugated heat exchange pipe II 8 and cooling oil, the cooling heat dissipation is performed through the tertiary cooling liquid circulation, the high-temperature insulating liquid circulation, the low-temperature insulating liquid is quickly, the insulating liquid enters the insulating liquid insulation cavity formed by the partition plate 3 and the insulating liquid enclosure 2, and the insulating liquid enclosure effect is improved.
In the embodiment, the inner walls of the first corrugated heat exchange tube 7, the third corrugated heat exchange tube 12 and the second corrugated heat exchange tube 8 are more complicated than those of smooth straight tubes, oil in the tubes is fully disturbed and influenced, the oil is forced to flow in a turbulent manner, the heat transfer capacity of the heat exchange tubes is enhanced, the flow of the oil in the tubes is enhanced, and the oil continuously forms a turbulent flow to enhance the heat transfer effect.
In this implementation, the both sides nose end of secondary air pipe 11 respectively with the 15 intercommunication settings in wind gap that set up on the case becomes cabinet 4, be provided with dust screen 16 in the wind gap 15, the outside that the case becomes cabinet 4 is provided with fan 18, fan 18 installs on weather shield 17, the integrative structural connection case of weather shield 17 becomes cabinet 4, and fan 18 is used for disturbing the distinguished and admirable entering wind gap 15 in, be convenient for control fan 18 work through controller 26, fan 18 is convenient for blow outdoor wind and flows through in wind gap 15 gets into secondary air pipe 11, the forced air cooling effect of ripple heat exchange tube three 12 is strengthened in the forced air cooling of convection current.
In the implementation, a plurality of gravity heat pipes 14 are inserted and installed on the primary cold water tank 5 and the tertiary cold water tank 6, the heat dissipation ends of the gravity heat pipes 14 extend out of the box transformer substation 4, when one end of each gravity heat pipe 14 entering the cold water tank is heated, liquid in the capillary wick evaporates and vaporizes, steam flows to the heat dissipation end under a small pressure difference to release heat and condense into liquid, the liquid flows back to the evaporation section along the porous material under the action of capillary force, and the circulation is repeated, so that the heat is transferred from the heating end to the heat dissipation end of each heat pipe, and high-temperature water liquid after heat exchange in the primary cold water tank 5 and the tertiary cold water tank 6 can be dissipated and discharged.
Inserting installation level sensor 27 on the interior diapire of case transformer substation cabinet 4, level sensor 27 induction end all runs through baffle 3 and stretches out downwards, level sensor 27 and temperature sensor 28 are equallyd divide respectively electric connection controller 26, level sensor 27's model can adopt MD-L500, can detect insulating liquid's liquid level through level sensor 27 how much, return oil pipe 13 goes up integrative structural connection and mends oil pipe 29, mend oil pipe 29 and run through the nose of case transformer substation cabinet 4 and insert and connect sealing cap 30, when the liquid level is less in the insulating liquid oil chamber that baffle 3 and metal pit case 2 enclose, can mend insulating liquid from mending oil pipe 29 through opening sealing cap 30 on mend oil pipe 29, satisfy the volume of the required insulating liquid of transformer how much.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (7)
1. The buried box transformer substation is in self-pressing type pressing contact with a pit box body and comprises a metal pit box (2) buried in a pit (1), and is characterized in that a partition plate (3) of an integrated structure is arranged in the metal pit box (2), insulating liquid is filled in a sealed cavity enclosed by the partition plate (3) and the metal pit box (2), the top opening end of the metal pit box (2) is connected with a box transformer cabinet (4) through a plurality of locking mechanisms, the inner walls of the two sides of the box transformer cabinet (4) are respectively and fixedly connected with a first-stage cold water box (5) and a third-stage cold water box (6), a plurality of gravity heat pipes (14) are inserted and installed on the first-stage cold water box (5) and the third-stage cold water box (6), a heat dissipation end of the gravity heat pipes (14) outwards extends out of the box transformer cabinet (4), a second-stage air pipe (11) is installed at the top of the box transformer cabinet (4), a first-stage corrugated heat exchange pipe (7) is arranged in the first-stage cold water box (5), a third-stage heat exchange pipe (12) is arranged in the third-stage cold water box (6), a first-stage heat exchange pipe (8) is connected with a first-stage heat exchange pipe (9), and a second-stage heat-exchange pipe (9) is connected with a first-stage heat-exchange pipe (9) through a first-circulating pump (9), advance oil pipe (10) and keep away from the one end of circulating pump (9) and run through baffle (3) and stretch out downwards, the one end that corrugated heat exchange tube three (12) was kept away from in corrugated heat exchange tube two (8) is connected back the one end of oil pipe (13), the other end that returns oil pipe (13) runs through baffle (3) and stretches out downwards, the both sides tube socket end of second grade tuber pipe (11) sets up with wind gap (15) intercommunication that sets up on case transformer cabinet (4) respectively, be provided with dust screen (16) in wind gap (15), the outside of case transformer cabinet (4) is provided with fan (18), install fan (18) on weather shield (17), weather shield (17) an organic whole structural connection case transformer cabinet (4), just fan (18) are used for disturbing the distinguished and admirable entering wind gap (15) in.
2. The buried box transformer substation with self-pressing type pressing contact with a pit box body is characterized in that the locking mechanism comprises an arc-shaped locking block (23), a return spring (24) and a support plate (25), the support plate (25) is obliquely arranged on the bottom wall of the box transformer substation cabinet (4), the support plate (25) and the arc-shaped locking block (23) are connected through the return spring (24), and the arc-shaped locking block (23) is used for being inserted into a locking hole (200) formed in the top opening end of the metal pit box (2).
3. The buried box transformer substation with self-pressing type pressing contact with a pit box body is characterized in that a liquid seepage prevention plate (19) is arranged between the top opening end of the metal pit box (2) and the bottom end face of the box transformer substation cabinet (4), the liquid seepage prevention plate (19) is buried in the top opening of the pit (1), a plurality of inserting rods (20) are uniformly distributed on the bottom end face of the box transformer substation cabinet (4), and the inserting rods (20) are used for inserting and connecting the liquid seepage prevention plate (19).
4. The buried box transformer substation with the self-pressing type compression contact with the pit box body as claimed in claim 1, characterized in that a sealing table (21) of an integrated structure is arranged at the bottom of the box transformer substation cabinet (4), the sealing table (21) is in a conical table shape, a sealing sleeve (22) is sleeved on the sealing table (21), and the sealing table (21) is connected with the top opening end of the metal pit box (2) in a sealing mode through the sealing sleeve (22).
5. The buried box transformer substation with a self-pressing type pressing contact with a pit box body as claimed in claim 1, characterized in that a liquid level sensor (27) and a temperature sensor (28) are respectively inserted and installed on an inner bottom wall of the box transformer substation cabinet (4), sensing ends of the liquid level sensor (27) and the temperature sensor (28) respectively penetrate through the partition plate (3) and extend downwards, and the liquid level sensor (27) and the temperature sensor (28) are respectively electrically connected with the controller (26).
6. The buried box transformer substation with the self-pressing type pressing contact with the pit box body as claimed in claim 1, wherein the oil return pipe (13) is integrally connected with an oil supply pipe (29), and the oil supply pipe (29) penetrates through the pipe orifice end of the box transformer substation cabinet (4) and is inserted and connected with a sealing cap (30).
7. The buried box transformer substation with the self-pressing type pressing contact with the pit box body as claimed in claim 1, wherein the oil inlet pipe (10) is provided with a solenoid valve (31), and the solenoid valve (31) is electrically connected with the controller (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210940277.7A CN115133443B (en) | 2022-08-05 | 2022-08-05 | Bury case with pit box autogenous pressure formula compaction contact and become |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210940277.7A CN115133443B (en) | 2022-08-05 | 2022-08-05 | Bury case with pit box autogenous pressure formula compaction contact and become |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115133443A CN115133443A (en) | 2022-09-30 |
| CN115133443B true CN115133443B (en) | 2023-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210940277.7A Active CN115133443B (en) | 2022-08-05 | 2022-08-05 | Bury case with pit box autogenous pressure formula compaction contact and become |
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| CN (1) | CN115133443B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117039685B (en) * | 2023-08-10 | 2024-02-20 | 申恒电力设备有限公司 | Energy-saving box-type transformer substation |
| CN117079934B (en) * | 2023-10-13 | 2023-12-29 | 内蒙古北科交大机器人有限公司 | Temperature control device and power distribution device of distribution transformer |
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| JPH0737725A (en) * | 1993-07-13 | 1995-02-07 | Fujikura Ltd | Heat pipe cooling type underground transformer and its installation |
| CN102646501A (en) * | 2012-03-28 | 2012-08-22 | 江苏昆山通用电气有限公司 | Heat radiation device of transformer |
| CN105225795A (en) * | 2015-10-19 | 2016-01-06 | 成都九十度工业产品设计有限公司 | A kind of buried oil cooling system of oil-filled transformer |
| CN107103978A (en) * | 2017-05-16 | 2017-08-29 | 天晟电气股份有限公司 | A kind of buried oil-filled transformer with step cooler |
| CN112864896A (en) * | 2021-01-27 | 2021-05-28 | 广东佰昌电力设备有限公司 | Totally enclosed liquid cooling heat dissipation formula buries box-type substation entirely |
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