Low temperature rise short-circuit resistant transformer

Abstract

The application discloses a low-temperature-rise anti-burst short-circuit type transformer and relates to the technical field of transformers. A transformer core is arranged at the top end of an integrated support frame arranged in the middle of the inner side of a transformer insulation box, a transformer coil is arranged at the side end of the transformer core, an electric connection processing wire group is arranged at the top end of the inner side of the transformer insulation box, a transmission motor is arranged at the middle of the bottom end of the transformer insulation box through a motor base, an inner hollow counter-jet stirring frame is connected to the output shaft of the transmission motor, and a linkage motor is arranged at the bottom end of the inner side of the transformer insulation box through a motor base. The application performs overflow discharge treatment on the liquid level and oil vapor of oil liquid through an overflow discharge pipe, a suspension treatment cylinder and a liquid level detector, and cooperates with a cooling heat insulation box and an overflow storage box to rapidly treat hot steam and high-temperature oil liquid, so that the internal pressure caused by the hot steam generated due to the temperature rise of the oil liquid is reduced, and the internal thermal expansion damage is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and in particular to a low-temperature-rise and sudden short-circuit-resistant transformer. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are the primary coil, secondary coil and iron core. Its main functions include voltage conversion, current conversion, impedance conversion, isolation, and voltage stabilization. Through structural optimization, material upgrades and process improvements, the anti-sudden short-circuit transformer has significantly improved its mechanical strength and insulation performance under short-circuit impact.

[0003] The patent application number CN201610238500.8 mentions a "low leakage reactance power transformer with current limiting inductor function". This patent combines the core blocks in the core block to move to the gap of the unclosed core ring, and then merges with the core ring to form a complete closed core to perform transformer work. The magnetic resistance is changed to change the external performance of the electrical equipment. It is used as a transformer under normal circumstances and as a short-circuit inductor under fault conditions, and can withstand large short-circuit currents.

[0004] However, when cooling the existing oil-immersed transformers, they only use the internal oil circulation or contact with external heat sinks for air cooling. As a result, when encountering overload operation or short circuit, the internal oil heats up rapidly, boiling and thermal expansion occur, causing internal pressure damage to the transformer. In addition, the rapid temperature rise and continuous high temperature will accelerate the aging of the insulation material and cause thermal melting and peeling, which greatly affects the transformer's operating stability and its ability to cope with sudden short circuits. Summary of the Invention

[0005] The present invention provides a low-temperature-rise sudden short-circuit-resistant transformer, which can effectively solve the problem raised in the above background technology that the existing oil-immersed transformer, when cooling, only uses the internal oil to circulate on its own or to contact with the external heat sink for air cooling, which causes the internal oil to heat up rapidly and boil and expand thermally when encountering overload operation or short circuit, causing the transformer to be compressed and damaged. In addition, the rapid temperature rise and continuous high temperature will accelerate the aging of the insulation material and cause thermal melting and peeling, which greatly affects the stability of the transformer operation and its ability to cope with sudden short circuits.

[0006] To achieve the above object, the present invention provides the following technical solution: a low-temperature-rise anti-sudden short-circuit transformer, comprising a transformer insulation box, wherein a multi-cavity series matching component is provided at a side end of the transformer insulation box;

[0007] The multi-cavity serial assembly includes an integrated support frame;

[0008] The middle part of the inside of the variable voltage insulation box is provided with an integrated support frame, the top end of the integrated support frame is provided with a transformer core through fixing bolts, the side end of the transformer core is provided with a variable voltage coil, and the top end of the inside of the variable voltage insulation box is provided with an electric connection processing wire group;

[0009] The middle part of the bottom end of the variable voltage insulation box is provided with a transmission motor through a motor base, and the output shaft of the transmission motor is connected with an empty internal spray stirring frame through clamping.

[0010] The bottom end of the inside of the variable voltage insulation box is provided with a linkage motor through a motor base, the output shaft of the linkage motor is connected with a linkage gear through clamping, and the inside of the variable voltage insulation box is rotatably connected with a bearing gear frame near the linkage gear.

[0011] The top end of the bearing gear frame is connected with a multi-spray collision pipe frame, and a plurality of external spray impact heads are embedded and arranged in the multi-spray collision pipe frame.

[0012] According to the above technical scheme, the transformer core, the variable voltage coil and the electric connection processing wire group are all placed in the inside of the variable voltage insulation box, the empty internal spray stirring frame is rotatably arranged in the inside of the variable voltage insulation box, and the linkage gear is connected with the bearing gear frame.

[0013] According to the above technical scheme, the top end of the variable voltage insulation box is provided with a cooling and heat insulation box, the bottom end of the variable voltage insulation box is provided with an overflow storage box, and the side end of the variable voltage insulation box is connected with a curved double pipe through equal spacing.

[0014] The bottom end of the variable voltage insulation box is connected with an upward separation pipe frame through equal spacing corresponding to the position of the overflow storage box, and the side end of the upward separation pipe frame is connected with a feeding fixed pipe through a connector corresponding to the position of the empty internal spray stirring frame.

[0015] The top end of the variable voltage insulation box is connected with an overflow discharge pipe through equal spacing on one side, the top end of the variable voltage insulation box is connected with a dispersion exchange box through clamping corresponding to the position of the upward separation pipe frame, and the inside of the cooling and heat insulation box is embedded with a condenser.

[0016] The bottom end of the cooling and heat insulation box and the variable voltage insulation box is connected with a quick exchange pipe through equal spacing, the top end and the bottom end of the inside of the variable voltage insulation box are both provided with a temperature detector, and the inside of the cooling and heat insulation box and the overflow storage box is connected with an upward return pipe.

[0017] According to the above technical scheme, the top end of the inside of the variable voltage insulation box is connected with a support processing rod through sliding, the top end of the support processing rod is provided with a suspension processing cylinder, and the bottom end of the support processing rod is provided with a liquid level detector.

[0018] The side end of the variable voltage insulation box is connected with a horizontal air cooling exchange frame, and the side end of the overflow storage box is provided with a plurality of longitudinal processing exchange frames through equal spacing.

[0019] A circulating pump is installed through a motor seat at the position of the multi-jet collision pipe rack corresponding to one end of the inner side of the load-bearing gear rack and the position of the upper punch separation pipe rack and the quick exchange pipe corresponding to the bottom end of the transformer insulation box. A limiting valve is embedded in one end of the overflow external discharge pipe and the quick exchange pipe, and an insulating terminal is installed on the top of the power connection processing line group.

[0020] According to the above technical solution, the top of the power connection processing line group is installed through the inside of the cooling insulation box, the input fixed pipe is installed in the inner side of the inner air spray stirring rack, and one end of the multi-spray collision pipe rack is connected to one end of the circulating pump through an adapter.

[0021] According to the above technical solution, the curved double-pass pipe is sleeved and connected to the upper punch separation pipe rack, the dispersed exchange box is placed inside the cooling insulation box, and the cross-sections of the dispersed exchange box and the horizontal air-cooled exchange rack are in the shape of a U.S. dollar.

[0022] According to the above technical solution, the transformer insulation box, the cooling and heat insulation box and the overflow storage box are filled with transformer oil, and the overflow discharge pipe is connected to the curved double-pass pipe in a sleeve manner;

[0023] The input ends of the transmission motor, linkage motor, condenser and cooler, temperature detector, liquid level detector, circulation pump and limiting valve are all electrically connected to the output end of the external controller;

[0024] The input terminal of the external controller is electrically connected to the output terminal of the external power supply.

[0025] According to the above technical solution, a cleaning coupling assembly is provided at the side end of the overflow storage box;

[0026] The cleaning and matching assembly includes a separation and processing box;

[0027] The bottom end of the overflow storage box is connected to a separation treatment box, the top end of the separation treatment box is connected to a plurality of lower row treatment pipes at equal intervals, and the top end of the separation treatment box is connected to an upper row treatment pipe;

[0028] An interception screen is installed in the middle of the inner side of the separation and treatment box, and a molecular sieve cage is installed at the top of the inner side of the separation and treatment box;

[0029] An outer row threaded pipe is connected to one side of the bottom end of the separation treatment box, and the side end of the outer row threaded pipe is connected to the centralized treatment barrel through a thread;

[0030] A plurality of connecting bolts are equidistantly installed at the bottom of the separation and processing box, and a plurality of side ends of the connecting bolts are clamped with supporting load-bearing frames;

[0031] A liquid storage fixed barrel is installed on one side of the top of the cooling insulation box, an air pump is installed on the other side of the top of the cooling insulation box, a flushing cooling pipe rack is connected through the bottom of the liquid storage fixed barrel, and a booster pump is installed at the side end of the cooling insulation box corresponding to the position of the liquid storage fixed barrel through a motor seat;

[0032] Several impact processing holes are evenly spaced on the inner side of the horizontal air-cooled exchange rack. The lower row of processing pipes, upper row of processing pipes, outer row of threaded pipes and one end of the flushing cooling pipe rack are all embedded with control valves, and a backup power supply is clamped on the inner side of the supporting load-bearing frame.

[0033] According to the above technical solution, the bottom end of the lower row treatment pipe is installed through the bottom end of the interception mesh plate, the top end of the upper row treatment pipe is embedded and installed inside the overflow storage box, and the centralized treatment barrel is clamped and installed on the side end of the supporting load-bearing frame.

[0034] According to the above technical solution, the top end of the support and load-bearing frame is connected to the bottom end of the separation treatment box, and the flushing and cooling pipe rack is embedded and installed inside the impact treatment hole;

[0035] The input ends of the air pump, booster pump and control valve are all electrically connected to the output end of the external controller;

[0036] The input end of the external controller is electrically connected to the output end of the backup power supply.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] 1. Equipped with multi-cavity serial matching components, the oil in the transformer insulation box is discharged into the inner side of the overflow storage box through the overflow external discharge pipe and quick exchange, the circulating pump and the rising return pipe drive the oil into the inner side of the cooling insulation box, the condenser cooler is used to cool the oil in the cooling insulation box, and the limiting hair and quick exchange pipe are used to return the oil to the transformer insulation box. The transmission motor drives the internal air-to-air spray stirring rack to drive the oil stirring and rotating, the linkage motor and the linkage gear drive the bearing gear rack to rotate, the circulating pump and the multi-spray collision pipe rack are used to extract the oil flow, and the external circulation heat exchange, condensation cooling, internal stirring and equalization and direct hedge washing cooling are used to make the transformer overloaded. Or when there is a short circuit, the internal oil can be quickly cooled and replaced to reduce the rate of temperature rise, and it can still be cooled quickly after the short circuit is disconnected to achieve oil temperature stabilization treatment, avoid it from heating up too quickly in a short time or the internal components are operated in a high temperature environment for a long time, which leads to accelerated aging of the insulation material or hot melt peeling. The oil level and oil vapor are discharged through the overflow discharge pipe, suspension treatment cylinder and liquid level detector, and the hot steam and high-temperature oil are quickly treated in conjunction with the cooling insulation box and overflow storage box to reduce the internal pressure caused by hot steam generated by oil temperature rise, which leads to internal thermal expansion damage.

[0039] 2. The oil in the transformer insulation box is extracted through the circulation pump and the upper punch separation pipe rack, and the oil is impact-discharged into the dispersed exchange box. The oil is dispersed through the dispersed exchange box, and the low-temperature oil in the cooling insulation box is heat-exchanged with the dispersed exchange box to cool the oil. The heat dissipation area outside the transformer insulation box is increased by using the curved double-pass pipe, the upper punch separation pipe rack, the overflow external discharge pipe and the horizontal air-cooled exchange rack. The multi-spray collision pipe rack, the upper punch separation pipe rack, the curved double-pass pipe and the inner air spray stirring rack are used to drive the continuous flow of the oil, directly cooling the transformer core while balancing the oil temperature at multiple locations, so that the temperature of the transformer can be maintained constant during daily operation, avoiding the occurrence of rapid temperature rise in a short time or at a certain location, and extending the service life of the transformer.

[0040] 3. Through three-chamber oil flow replacement, top oil cooling and reflux, bottom overflow exhaust collection and multi-position serial buffering, the internal oil can be quickly discharged and cooled in the event of short circuit or overload, reducing the temperature rise rate of the oil and transformer core. In conjunction with the external oil circulation pipeline and external air-cooling heat dissipation components, it effectively solves the problem in the existing technology that the oil-immersed transformer, during the cooling process, only uses the internal oil to circulate by itself or contact with the external heat sink for air cooling, resulting in rapid temperature rise of the internal oil in the event of overload or short circuit, resulting in increased internal pressure and heat damage to the equipment. It effectively improves the transformer's ability to cope with emergencies, and through buffering treatment and continuous and constant coordination, reduces the probability of component damage due to heat and pressure, ensures the stability of transformer operation, and extends the service life of the transformer.

[0041] 4. A cleaning coupling assembly is provided. The control valve opens the lower and upper treatment pipes, and the oil flows into the inner side of the separation treatment box along the lower treatment pipe. The large particles of impurities and suspended solids in the oil are intercepted and treated by the interception mesh plate. The molecular sieve in the molecular sieve cage adsorbs and purifies the pickling substances and small particles of impurities in the oil. The oil flows back to the inner side of the overflow storage box. During long-term use, the transformer can automatically purify the oil inside to avoid flocculation and denaturation due to air, moisture and high temperature in the oil, ensuring the insulation and heat conduction effect of the oil. Through the booster pump, liquid storage fixed barrel and flushing cooling pipe rack The cleaning liquid is discharged into the impact treatment hole and the horizontal air-cooled exchange rack, and the cleaning liquid is used to impact clean the surface of the curved double-pass pipe, the upper punch separation pipe rack, the overflow external discharge pipe and the horizontal air-cooled exchange rack. The air pump and the flushing cooling pipe rack are used to continuously flush and cool the curved double-pass pipe, the upper punch separation pipe rack, the overflow external discharge pipe and the side end of the horizontal air-cooled exchange rack. Through the mutual cooperation of external cleaning treatment and wind cleaning cooling, the external contact area of ​​the transformer with the air can be guaranteed when it is used for a long time, avoiding the reduction of heat dissipation efficiency due to impurity accumulation, improving the stability of the transformer in long-term operation, and reducing the tediousness of maintenance for staff.

[0042] In summary, by cooperating with each other through the multi-cavity serial matching components and the cleaning matching components, and through the multi-chamber oil flow treatment, the oil is cooled and the oil is deslagging and deacidifying. Therefore, during long-term use, the oil can be in a clean state, ensuring the insulation and heat conduction effects of the oil. Through external air-cooled replacement treatment and external slag cleaning components, the efficiency of external heat exchange is guaranteed, and the efficiency of transformer heat dissipation is improved. At the same time, by using self-cleaning components, the transformer can perform self-slag cleaning during operation, reducing the tedious operation of maintenance personnel and reducing the labor intensity of staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0044] In the attached figure:

[0045] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0046] Figure 2 It is a structural schematic diagram of the multi-cavity serial matching assembly of the present invention;

[0047] Figure 3 It is a schematic diagram of the installation structure of the decentralized exchange box of the present invention;

[0048] Figure 4 Schematic diagram of the installation structure of the limiting valve of the present invention;

[0049] Figure 5 It is a schematic diagram of the installation structure of the external spray impact head of the present invention;

[0050] Figure 6 This is a schematic diagram of the installation structure of the rising return pipe of the present invention;

[0051] Figure 7 It is a schematic structural diagram of the cleaning coupling assembly of the present invention;

[0052] Figure 8 This is a schematic diagram of the installation structure of the flushing and cooling pipe rack of the present invention;

[0053] Figure 9 It is a schematic diagram of the installation structure of the control valve of the present invention;

[0054] Numbers in the figure: 1, transformer insulation box;

[0055] 2. Multi-cavity serial assembly; 201. Integrated support frame; 202. Fixing bolts; 203. Transformer core; 204. Transformer coil; 205. Power connection line group; 206. Transmission motor; 207. Internal air spray mixing frame; 208. Linkage motor; 209. Linkage gear; 210. Load-bearing gear frame; 211. Multi-spray collision pipe frame; 212. External spray impact head; 213. Cooling insulation box; 214. Overflow storage box; 215. Bending double-pass pipe; 21 6. Upper separation pipe rack; 217. Input fixed pipe; 218. Overflow discharge pipe; 219. Distributed exchange box; 220. Condenser cooler; 221. Quick exchange pipe; 222. Temperature detector; 223. Upflow return pipe; 224. Support treatment rod; 225. Suspended treatment cylinder; 226. Liquid level detector; 227. Horizontal air-cooled exchange rack; 228. Vertical treatment exchange rack; 229. Circulation pump; 230. Limit valve; 231. Wiring insulation terminal;

[0056] 3. Clear the matching components; 301. Separation treatment box; 302. Lower row treatment pipe; 303. Upper row treatment pipe; 304. Intercepting mesh plate; 305. Molecular sieve cage; 306. External row threaded pipe; 307. Centralized treatment barrel; 308. Connecting bolts; 309. Support load-bearing frame; 310. Liquid storage fixed barrel; 311. Air pump; 312. Flushing and cooling pipe rack; 313. Booster pump; 314. Impact treatment hole; 315. Control valve; 316. Backup power supply. DETAILED DESCRIPTION

[0057] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0058] Example: Figure 1-9 As shown, the present invention provides a technical solution, a low temperature rise and sudden short circuit resistant transformer, comprising a transformer insulation box 1, a multi-cavity series matching component 2 is provided at the side end of the transformer insulation box 1;

[0059] The multi-cavity serial assembly 2 includes an integrated support frame 201, fixing bolts 202, a transformer core 203, a transformer coil 204, an electrical processing line group 205, a transmission motor 206, an internal air spray stirring frame 207, a linkage motor 208, a linkage gear 209, a bearing gear frame 210, a multi-spray collision pipe frame 211, an external spray impact head 212, a cooling and heat insulation box 213, an overflow storage box 214, a curved two-way pipe 215, an upper punch separation pipe frame 216, an input fixed pipe 217, an overflow external discharge pipe 218, a dispersed exchange box 219, a condenser cooler 220, a quick exchange pipe 221, a temperature detector 222, a rising reflux pipe 223, a support processing rod 224, a suspension processing cylinder 225, a liquid level detector 226, a horizontal air cooling exchange frame 227, a vertical processing exchange frame 228, a circulation pump 229, a limiting valve 230 and a wiring insulation terminal 231;

[0060] An integrated support frame 201 is installed in the middle of the inner side of the transformer insulation box 1. A transformer core 203 is installed on the top of the integrated support frame 201 through fixing bolts 202. A transformer coil 204 is installed on the side end of the transformer core 203. A power connection wire group 205 is installed on the top of the inner side of the transformer insulation box 1. The transformer core 203, transformer coil 204 and power connection wire group 205 are all placed inside the transformer insulation box 1 to achieve voltage isolation and voltage processing.

[0061] A transmission motor 206 is installed in the middle of the bottom end of the transformer insulation box 1 through a motor seat. The output shaft of the transmission motor 206 is clamped with an inner air-spraying stirring rack 207. The inner air-spraying stirring rack 207 is rotatably installed inside the transformer insulation box 1 to achieve flushing and cooling treatment and transformer oil circulation treatment;

[0062] A linkage motor 208 is installed at the bottom of the inner side of the transformer insulation box 1 through the motor seat. The output shaft of the linkage motor 208 is clamped with a linkage gear 209. A bearing gear frame 210 is rotatably connected to the inner side of the transformer insulation box 1 near the linkage gear 209. The linkage gear 209 is meshed with the bearing gear frame 210 to realize gear meshing transmission processing.

[0063] The top of the bearing gear frame 210 is clamped with a multi-jet collision pipe frame 211, and a plurality of external jet impact heads 212 are evenly embedded and installed inside the multi-jet collision pipe frame 211;

[0064] A cooling and heat insulation box 213 is installed at the top of the transformer insulation box 1. The top of the power connection processing line group 205 is installed through the inside of the cooling and heat insulation box 213 to achieve top power connection processing and ensure the stability of power connection. An overflow storage box 214 is installed at the bottom of the transformer insulation box 1. The insides of the transformer insulation box 1, the cooling and heat insulation box 213 and the overflow storage box 214 are filled with transformer oil to ensure the stability of multi-position cooling. A curved two-way pipe 215 is equidistantly connected to the side end of the transformer insulation box 1.

[0065] An upper punch separation pipe rack 216 is penetrated at the position of the overflow storage box 214 corresponding to the bottom end of the transformer insulation box 1, and a curved two-way pipe 215 is sleeved and connected to the upper punch separation pipe rack 216. The overflow outer discharge pipe 218 is sleeved and connected to the curved two-way pipe 215, so as to realize multiple groups of cooling coordination and overflow circulation treatment, thereby improving the cooling effect. A feed fixed pipe 217 is connected to the position of the inner air-to-air spray stirring rack 207 through an adapter at the side end of the upper punch separation pipe rack 216. The feed fixed pipe 217 is sleeved and installed on the inner side of the inner air-to-air spray stirring rack 207, so as to realize the injection of transformer oil at the position of the inner air-to-air spray stirring rack 207, and to throw out the transformer oil through rotation and centrifugation, thereby realizing multi-position circulation treatment.

[0066] An overflow external discharge pipe 218 is connected to one side of the top of the transformer insulation box 1. A dispersed exchange box 219 is clamped at the position of the upper punch separation pipe rack 216 at the top of the transformer insulation box 1. The dispersed exchange box 219 is placed inside the cooling and heat insulation box 213. The cross-section of the dispersed exchange box 219 and the horizontal air-cooled exchange rack 227 is in the shape of a circle, which realizes the clamping alignment and contact cooling treatment, ensuring the stability and effect of the cooling. A condenser cooler 220 is embedded in the inside of the cooling and heat insulation box 213.

[0067] A quick exchange tube 221 is equidistantly connected through the cooling insulation box 213 and the bottom end of the transformer insulation box 1. A temperature detector 222 is installed at the top and bottom ends of the inner side of the transformer insulation box 1. A rising return pipe 223 is connected through the inner side of the cooling insulation box 213 and the overflow storage box 214.

[0068] A supporting rod 224 is slidably connected to the top of the inner side of the transformer insulation box 1, a suspension processing cylinder 225 is installed on the top of the supporting rod 224, and a liquid level detector 226 is installed on the bottom of the supporting rod 224;

[0069] A horizontal air-cooling exchange rack 227 is clamped on the side of the transformer insulation box 1, and a number of longitudinal processing exchange racks 228 are evenly installed on the side of the overflow storage box 214;

[0070] A circulating pump 229 is installed via a motor base at one end of the inner side of the bearing gear rack 210, corresponding to the position of the multi-jet collision pipe rack 211, and at the bottom end of the transformer insulation box 1, corresponding to the position of the upper punch separation pipe rack 216 and the position of the quick exchange pipe 221. One end of the multi-jet collision pipe rack 211 is connected to one end of the circulating pump 229 via an adapter to achieve transformer oil circulation, thereby achieving spray cooling treatment. A limiting valve 230 is embedded in one end of the overflow external discharge pipe 218 and the quick exchange pipe 221, and an insulating terminal 231 is installed at the top of the power connection processing line group 205.

[0071] For stable operation of the equipment, the input ends of the transmission motor 206, linkage motor 208, condenser cooler 220, temperature detector 222, liquid level detector 226, circulation pump 229 and limiting valve 230 are all electrically connected to the output end of the external controller;

[0072] The input terminal of the external controller is electrically connected to the output terminal of the external power supply.

[0073] A cleaning coupling assembly 3 is provided at the side end of the overflow storage box 214;

[0074] The cleaning assembly 3 includes a separation treatment box 301, a lower treatment pipe 302, an upper treatment pipe 303, an interception screen 304, a molecular sieve cage 305, an outer row of threaded pipes 306, a centralized treatment barrel 307, connecting bolts 308, a supporting load-bearing frame 309, a liquid storage fixed barrel 310, an air pump 311, a flushing and cooling pipe rack 312, a booster pump 313, an impact treatment hole 314, a control valve 315 and a backup power supply 316;

[0075] The bottom of the overflow storage box 214 is connected to a separation treatment box 301. The top of the separation treatment box 301 is evenly connected to a plurality of lower treatment pipes 302. The top of the separation treatment box 301 is also connected to an upper treatment pipe 303.

[0076] An interception mesh plate 304 is installed in the middle of the inner side of the separation and treatment box 301. The bottom end of the lower treatment pipe 302 is installed through the bottom end of the interception mesh plate 304. The top end of the upper treatment pipe 303 is embedded in the inner side of the overflow storage box 214 to achieve the circulation and circulation filtration of the transformer oil. A molecular sieve cage 305 is installed at the top end of the inner side of the separation and treatment box 301.

[0077] An outer threaded pipe 306 is connected to one side of the bottom end of the separation treatment box 301, and a side end of the outer threaded pipe 306 is connected to a centralized treatment barrel 307 through a thread;

[0078] Several connecting bolts 308 are installed at equal intervals at the bottom of the separation and processing box 301. The side ends of the multiple connecting bolts 308 are clamped with support and load-bearing frames 309. The top of the support and load-bearing frame 309 is clamped with the bottom of the separation and processing box 301 to support and fix it, ensuring the stability of the limited clamping. The centralized processing barrel 307 is clamped and installed on the side end of the support and load-bearing frame 309 to achieve a stable clamping connection and ensure the stability of the support positioning;

[0079] A liquid storage fixed barrel 310 is installed on one side of the top of the cooling and heat insulation box 213, and an air pump 311 is installed on the other side of the top of the cooling and heat insulation box 213. A flushing and cooling pipe rack 312 is connected to the bottom of the liquid storage fixed barrel 310. The flushing and cooling pipe rack 312 is embedded in the inner side of the impact treatment hole 314 to achieve rapid cooling and steady cleaning. A booster pump 313 is installed at the side end of the cooling and heat insulation box 213 corresponding to the position of the liquid storage fixed barrel 310 through a motor base;

[0080] Several impact treatment holes 314 are evenly spaced inside the horizontal air-cooled exchange rack 227. Control valves 315 are embedded in the lower row of treatment pipes 302, the upper row of treatment pipes 303, the outer row of threaded pipes 306, and one end of the flushing cooling pipe rack 312. A backup power supply 316 is clamped inside the support and load-bearing frame 309.

[0081] For stable operation of the equipment, the input terminals of the air pump 311, the booster pump 313 and the control valve 315 are all electrically connected to the output terminal of the external controller;

[0082] The input terminal of the external controller is electrically connected to the output terminal of the backup power supply 316 .

[0083] The working principle and use process of the present invention are as follows: When the transformer is in use, the transformer coil 204 performs voltage step-up and step-down processing. During operation, the conductor resistance loss, iron core magnetic loss, conductor skin effect and proximity effect, loss caused by leakage magnetic flux and dielectric loss cause the equipment to generate heat. The heat is transferred to the interior of the transformer oil through the transformer core 203 and the transformer coil 204. At this time, the transmission motor 206 drives the internal air-to-air spray stirring rack 207 to rotate along the transformer insulation box 1. The internal air-to-air spray stirring rack 207 promotes the rotation of the oil, driving the oil to perform spiral impact cooling on the transformer coil 204 and the transformer core 203. Continuous slow stirring drives the liquid flow, achieving liquid impact cooling treatment and balancing the temperature of the liquid flow at multiple positions inside.

[0084] The oil in the transformer insulation box 1 is extracted by the circulation pump 229 and the multi-spray collision pipe rack 211. The oil drives the oil along the multi-spray collision pipe rack 211 and the external spray impact head 212 to directly flush the surface of the transformer core 203 and the transformer coil 204. The linkage motor 208 drives the linkage gear 209 to rotate along the transformer insulation box 1. The linkage gear 209 drives the bearing gear rack 210 to engage and transmit. The bearing gear rack 210 drives the multi-spray collision pipe rack 211 to rotate along the transformer insulation box 1 and the integrated support frame 201, realizing multi-position impact cooling treatment, driving the oil circulation transposition, and realizing the oil cooling treatment of the equipment, thereby continuously and repeatedly cooling the internal transformer core 203, transformer coil 204 and power connection processing line group 205, and utilizing the flow of oil to realize steady internal self-cooling treatment;

[0085] The oil in the transformer insulation box 1 is driven by the circulation pump 229 and the upper separation pipe rack 216 to impact the inner side of the dispersion exchange box 219 along the upper separation pipe rack 216. When impacting the inner side of the dispersion exchange box 219, the oil is impacted and separated, and the oil is dispersed to form an oil curtain. At the same time, the condenser cooler 220 is used to cool the oil in the cooling insulation box 213. When the hot oil is sprayed and dispersed into the dispersion exchange box 219, the low-temperature oil contacts the high-temperature dispersion exchange box 219 to absorb heat. The oil dispersed inside is cooled and circulated to the inside of the transformer insulation box 1. At this time, the temperature detectors 222 at the top and bottom are used to detect the oil at multiple positions. When the oil is extracted, the oil will float up and down. At the same time, when the oil is stirred and rotated, the oil will float and flow along the curved two-way pipe 215. At the same time, when the oil floats, the excess oil will flow along the overflow external discharge pipe 218 and be discharged into the inside of the overflow storage box 214 to achieve oil overflow treatment;

[0086] The oil in the transformer insulation box 1 is driven to circulate through the upper punch separation pipe rack 216, the overflow external discharge pipe 218 and the curved two-way pipe 215. The air-cooling contact area of ​​the transformer insulation box 1 is increased by the horizontal air-cooling exchange rack 227, the upper punch separation pipe rack 216, the overflow external discharge pipe 218 and the curved two-way pipe 215, thereby improving the stability and steady effect of normal operation. The supporting treatment rod 224 is driven to move up and down along the transformer insulation box 1 through the suspended treatment cylinder 225, and the liquid level detector 226 is driven to move up and down to detect the oil level in the transformer insulation box 1. When the liquid level is low, the limiting valve 230 opens the quick exchange pipe 221, and the quick exchange pipe 221 injects the oil in the cooling insulation box 213 from the quick exchange pipe 221 into the inner side of the transformer insulation box 1, thereby realizing rapid oil replenishment and timely replenishment of the transformer interior.

[0087] When the transformer is overloaded, the internal temperature will exceed 85°C in normal operation. At this time, the condenser cooler 220 continuously and quickly cools the oil in the cooling insulation box 213. At this time, the quick exchange pipe 221 at the position of the cooling insulation box 213 and the transformer insulation box 1 is opened, and the low-temperature transformer oil is put into the transformer insulation box 1. At this time, the transmission motor 206 drives the internal air-to-air spray stirring rack 207 to rotate, promotes the flow and mixing of the oil, and discharges the hot oil into the inside of the overflow storage box 214. At this time, the circulating pump 229 and the rising return pipe 223 extract the oil in the overflow storage box 214 and inject the oil into the cooling insulation box 213. On the inside, the oil is cooled along the cooling and heat insulation box 213, mixedly cooled in the transformer insulation box 1, and extendedly stored in the overflow storage box 214, and the longitudinal processing exchange rack 228 is used to perform heat exchange treatment on the oil in the overflow storage box 214, so as to realize multi-position circulation and cooling treatment of the oil. In the process of overload operation, the transformer coil 204 inside the transformer can be prevented from being affected by high temperature due to overload, and the temperature of the transformer oil can be quickly controlled to reduce the speed of oil temperature rise. When the transformer is short-circuited, the above components can be used to simultaneously cooperate to achieve internal rapid cooling treatment and limit the temperature rise speed of the oil in a short time.

[0088] After the transformer has been running for a period of time, the control valve 315 opens the lower treatment pipe 302 and the upper treatment pipe 303, and the oil flows along the lower treatment pipe 302 into the inner side of the separation treatment box 301. When the oil enters the separation treatment box 301, the impurities and suspended solids in the oil are intercepted and processed by the interception mesh plate 304. The oil rises along the interception mesh plate 304 and is adsorbed by the molecular sieve in the molecular sieve cage 305. The pickling substances and small particles of impurities in the oil are intercepted and purified by the molecular sieve. The oil flows along the separation treatment box 301. 01 and the upper treatment pipe 303 discharge the oil upward, and return the oil to the inside of the overflow storage box 214. At this time, the circulating pump 229 and the rising return pipe 223 are used to inject the oil into the inside of the cooling insulation box 213, and finally return it to the inside of the transformer insulation box 1 through the cooling insulation box 213 and the quick exchange pipe 221, realizing the oil purification and reflux treatment. The intercepted impurities are pushed by the flow of oil along the outer row threaded pipe 306 into the inside of the centralized treatment barrel 307, realizing slag collection treatment, ensuring internal automatic slag cleaning treatment, and realizing continuous oil circulation treatment;

[0089] The cooling cleaning liquid in the liquid storage fixed barrel 310 is extracted by the booster pump 313, and the cooling cleaning liquid is discharged to the position of the horizontal air-cooling exchange rack 227 along the flushing cooling pipe rack 312 and the impact treatment hole 314, impacting and cleaning the curved double-pass pipe 215, the upper punch separation pipe rack 216, the overflow external discharge pipe 218 and the horizontal air-cooling exchange rack 227, and cooling their surfaces. The air pump 311 and the flushing cooling pipe rack 312 continuously flush and cool the side ends of the curved double-pass pipe 215, the upper punch separation pipe rack 216, the overflow external discharge pipe 218 and the horizontal air-cooling exchange rack 227, thereby accelerating the external air cooling, and cooperating with the backup power supply 316 to provide backup power supply to various components, so that when a short circuit occurs in the transformer and a power outage occurs, the normal operation of various cooling components can be effectively guaranteed, thereby improving the protection effect.

[0090] The transformer core 203 and the transformer coil 204 are fixed to the inner side of the integrated support frame 201 by means of fixing bolts 202, and the power connection line group 205 is fixed to the inner side of the transformer insulation box 1, and the transformer coil 204 is electrically connected to the power connection line group 205 by means of connecting cables to realize power connection processing, and external power connection is carried out through the wiring insulation terminal 231 to realize equipment fixing processing, so that the equipment can be installed quickly and steadily during adjustment and replacement of the internal transformer coil 204, and the support load-bearing frame 309 is installed to the bottom end of the separation processing box 301 by means of connecting bolts 308 to realize fixed connection of the transformer installation.

[0091] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A low-temperature-rise, short-circuit-resistant transformer, comprising a transformer insulation box (1), characterized in that: A multi-cavity serial matching component (2) is provided at a side end of the transformer insulation box (1); The multi-cavity serial assembly (2) comprises an integrated support frame (201); An integrated support frame (201) is installed at the middle of the inner side of the transformer insulation box (1), a transformer core (203) is installed at the top end of the integrated support frame (201) via fixing bolts (202), a transformer coil (204) is installed at the side end of the transformer core (203), and a power connection processing line group (205) is installed at the top end of the inner side of the transformer insulation box (1); A transmission motor (206) is installed at the middle of the bottom end of the transformer insulation box (1) through a motor seat, and an internal air-spraying stirring frame (207) is clamped on the output shaft of the transmission motor (206); A linkage motor (208) is mounted on the bottom inner end of the transformer insulation box (1) via a motor seat, a linkage gear (209) is clamped on the output shaft of the linkage motor (208), and a bearing gear frame (210) is rotatably connected to a position near the linkage gear (209) on the inner side of the transformer insulation box (1); The top end of the bearing gear rack (210) is clamped with a multi-jet collision pipe rack (211), and a plurality of external jet impact heads (212) are embedded and installed at equal intervals inside the multi-jet collision pipe rack (211); A cooling and heat insulation box (213) is installed at the top of the transformer insulation box (1), an overflow storage box (214) is installed at the bottom of the transformer insulation box (1), and a curved double-pass pipe (215) is equidistantly connected to the side end of the transformer insulation box (1); An upper punch separation pipe rack (216) is passed through the bottom of the transformer insulation box (1) at a position corresponding to the overflow storage box (214); an overflow external discharge pipe (218) is passed through one side of the top of the transformer insulation box (1); and an ascending return pipe (223) is passed through the inner sides of the cooling insulation box (213) and the overflow storage box (214); A circulating pump (229) is installed via a motor base at one end of the inner side of the bearing gear rack (210) corresponding to the position of the multi-jet collision pipe rack (211) and at the bottom end of the transformer insulation box (1) corresponding to the position of the upper punch separation pipe rack (216) and the position of the quick exchange pipe (221).

2. A low temperature rise and sudden short circuit resistant transformer according to claim 1, characterized in that: The transformer core (203), transformer coil (204) and power connection wire group (205) are all placed inside the transformer insulation box (1), the inner air-spraying stirring frame (207) is rotatably mounted inside the transformer insulation box (1), and the linkage gear (209) is meshedly connected with the bearing gear frame (210).

3. The low temperature rise and sudden short circuit resistant transformer according to claim 1, characterized in that: The side end of the upper punch separation pipe rack (216) is connected to an input fixed pipe (217) at a position corresponding to the inner air spray stirring rack (207) through an adapter; A dispersed exchange box (219) is clamped at a position corresponding to the upper punch separation pipe rack (216) on the top of the transformer insulation box (1), and a condenser cooler (220) is embedded and installed inside the cooling insulation box (213); The cooling insulation box (213) and the bottom end of the transformer insulation box (1) are equidistantly connected with a quick exchange tube (221), and the top and bottom ends of the inner side of the transformer insulation box (1) are both installed with a temperature detector (222).

4. The low temperature rise and sudden short circuit resistant transformer according to claim 3, characterized in that: A support processing rod (224) is slidably connected to the inner top of the variable voltage insulation box (1). A suspension processing cylinder (225) is installed at the top end of the support processing rod (224), and a liquid level detector (226) is installed at the bottom end of the support processing rod (224). A transverse air-cooled exchange frame (227) is clamped to the side end of the variable voltage insulation box (1), and a number of longitudinal processing exchange frames (228) are equidistantly installed on the side end of the overflow storage box (214). Restriction valves (230) are embedded at one ends of the overflow discharge pipe (218) and the quick exchange pipe (221), and a wiring insulation terminal (231) is installed at the top end of the power connection processing wire group (205).

5. The low temperature rise and sudden short circuit resistant transformer according to claim 3, characterized in that: The top end of the power connection processing wire group (205) penetrates and is installed inside the cooling and heat insulation box (213). The input fixed pipe (217) is sleeved and installed inside the inner hollow spray stirring frame (207). One end of the multi-spray collision pipe frame (211) is connected to one end of the circulating pump (229) through a connector.

6. The low temperature rise and sudden short circuit resistant transformer according to claim 4, characterized in that: The bent double-pass pipe (215) is sleeved and connected to the upward impact separation pipe frame (216). The dispersion exchange box (219) is placed inside the cooling and heat insulation box (213). The cross-sections of the dispersion exchange box (219) and the transverse air-cooled exchange frame (227) are in a shape of a Chinese character 'hui'.

7. The low temperature rise and sudden short circuit resistant transformer according to claim 4, characterized in that: Transformer oil is filled inside the variable voltage insulation box (1), the cooling and heat insulation box (213) and the overflow storage box (214). The overflow discharge pipe (218) is sleeved and connected to the bent double-pass pipe (215). The input ends of the drive motor (206), the linkage motor (208), the condensation cooler (220), the temperature detector (222), the liquid level detector (226), the circulating pump (229) and the restriction valve (230) are all electrically connected to the output end of an external controller. ​ 8. The low temperature rise and sudden short circuit resistant transformer according to claim 7, characterized in that: ​ ​ ​ ​ ​ ​ A liquid storage fixed barrel (310) is installed on one side of the top of the cooling heat insulation box (213), an air pump (311) is installed on the other side of the top of the cooling heat insulation box (213), a flushing cooling pipe rack (312) is connected through the bottom of the liquid storage fixed barrel (310), and a booster pump (313) is installed at the side of the cooling heat insulation box (213) corresponding to the position of the liquid storage fixed barrel (310) through a motor seat; A plurality of impact processing holes (314) are equidistantly installed on the inner side of the horizontal air-cooled exchange rack (227); a control valve (315) is embedded in one end of the lower row processing pipe (302), the upper row processing pipe (303), the outer row threaded pipe (306) and the flushing cooling pipe rack (312); and a backup power supply (316) is clamped on the inner side of the supporting load-bearing frame (309).

9. The low temperature rise and sudden short circuit resistant transformer according to claim 8, characterized in that: The bottom end of the lower row processing pipe (302) is installed through the bottom end of the intercepting mesh plate (304), the top end of the upper row processing pipe (303) is embedded and installed inside the overflow storage box (214), and the centralized processing barrel (307) is clamped and installed on the side end of the supporting load-bearing frame (309).

10. The low temperature rise and sudden short circuit resistant transformer according to claim 8, characterized in that: The top end of the supporting load-bearing frame (309) and the bottom end of the separation treatment box (301) are connected, and the flushing and cooling pipe rack (312) is embedded and installed inside the impact treatment hole (314); The input ends of the air pump (311), the booster pump (313) and the control valve (315) are all electrically connected to the output end of the external controller; The input end of the external controller is electrically connected to the output end of the backup power supply (316).

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