Magnetic fluid cooling transformer

Abstract

The invention provides a magnetofluid cooling transformer, and relates to the field of transformers, the magnetofluid cooling transformer comprises a transformer shell, annular cooling pipe fittings are installed on the right side in the transformer shell in a rectangular array shape, and each annular cooling pipe fitting is filled with magnetofluid; and a water cooling mechanism is mounted on the transformer shell. Through the arrangement of the annular cooling pipe fitting, the magnetic fluid and the permanent magnet, the magnetic fluid can flow under the pushing action of magnetic force, then a traditional circulating water pump can be replaced, electric energy loss is effectively reduced, and the economical efficiency and reliability of operation of the transformer are improved; the problems that heat dissipation modes of an existing outdoor large transformer are divided into natural heat dissipation, air cooling heat dissipation and water cooling heat dissipation, natural heat dissipation is only suitable for small-capacity or low-load transformers, air cooling heat dissipation is limited in efficiency in a high-load or high-temperature environment, and although water cooling heat dissipation is good in cooling effect, a circulating water pump needs to operate all the time, and heat dissipation efficiency is poor are solved. And the loss of electric energy is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transformers, and in particular to a magnetic fluid cooling transformer. BACKGROUND

[0002] As a crucial device in power systems, transformers undertake key tasks such as voltage transformation, power distribution and transmission, and their performance directly affects the stability, reliability and economy of power systems. With the continuous growth of power demand and the continuous expansion of power grid scale, higher requirements are placed on the capacity, efficiency and reliability of transformers. During operation, the windings and cores of transformers generate a large amount of heat, and if not effectively dissipated in time, the internal temperature of the transformer will rise, the insulation performance will decrease, and even faults will occur, seriously affecting the service life of the transformer and the stable operation of the power system.

[0003] The existing heat dissipation methods for outdoor large transformers mainly include natural heat dissipation, air-cooled heat dissipation and water-cooled heat dissipation. The natural heat dissipation method is only suitable for small-capacity or low-load transformers and is difficult to apply to outdoor large transformers. Although the air-cooled heat dissipation can enhance the heat dissipation effect by forced air convection through the fan, the air itself has a low thermal conductivity, and its heat dissipation efficiency is obviously limited in high-load or high-temperature environments, making it difficult to ensure the stable operation of outdoor large transformers. The last water-cooled heat dissipation has obvious cooling effect, but the circulating water pump needs to operate all the time, increasing the loss of electric energy. Moreover, the water-cooled heat dissipation device with water pipe circulation has a reduced heat dissipation effect in high-temperature outdoor conditions, as the temperature of the water pipe outside the transformer, which usually lowers the water temperature through air, is also high. SUMMARY

[0004] The present application relates to a magnetic fluid cooling transformer, which solves the problem that the existing heat dissipation methods for outdoor large transformers mainly include natural heat dissipation, air-cooled heat dissipation and water-cooled heat dissipation. The natural heat dissipation is only suitable for small-capacity or low-load transformers, the air-cooled heat dissipation has a low air thermal conductivity and limited efficiency in high-load or high-temperature environments, and the water-cooled heat dissipation has a good cooling effect but requires the circulating water pump to operate all the time, increasing the loss of electric energy and reducing the heat dissipation efficiency of the water pipe in high-temperature conditions.

[0005] The application discloses a magnetic fluid cooling transformer.

[0006] Further, the transformer shell is internally provided with a temperature sensor, and a control box is arranged on the left end surface of the transformer shell.

[0007] Further, a permanent magnet is arranged on the right upper end surface in the annular cooling pipe, a liquid adding port is arranged on the right upper end surface outside the annular cooling pipe, and a threaded sealing cover is threadedly connected to the upper end of the liquid adding port.

[0008] Further, the magnetic fluid comprises micro magnetic particles, transformer cooling oil and a surfactant, the transformer cooling oil is used as a base carrier liquid of the magnetic particles and the surfactant, the surfactant is oleic acid, the oleic acid surfactant can effectively stabilize the micro magnetic particles, and the micro magnetic particles account for 8%-12% of the volume fraction of the entire magnetic fluid solution.

[0009] Further, the temperature of the magnetic fluid on the left side in the annular cooling pipe is higher than that of the magnetic fluid on the right side in the annular cooling pipe.

[0010] Further, the water cooling mechanism comprises a shunt pipe, a converging pipe, a circulating pump, a liquid adding tank and a Chinese character F-shaped heat dissipation pipe, the shunt pipe and the converging pipe are fixedly arranged on the upper and lower sides of the rear end surface of the transformer shell, the shunt pipe is connected with the outlet of the circulating pump, the converging pipe is connected with the inlet of the circulating pump, and the circulating pump is arranged on the rear end surface of the transformer shell, the top of the shunt pipe is provided with a liquid adding pipe, the upper end of the liquid adding pipe is connected with the outlet of the bottom of the liquid adding tank, the liquid adding tank is arranged on the upper part of the rear side of the transformer shell, the top of the liquid adding tank is provided with a liquid adding pipe port, and a threaded cover is threadedly connected to the upper end of the liquid adding pipe port, and the Chinese character F-shaped heat dissipation pipe is uniformly arranged between the outlet of the front end of the shunt pipe and the inlet of the front end of the converging pipe.

[0011] Further, the spray cooling mechanism comprises a shunt pipe, a spray shell A, a spray shell B, a liquid infusion pump, a liquid suction pipe, a filter screen and a liquid infusion pipe, the spray shell A and the spray shell B are connected to the shunt pipe in a uniform manner, the spray shell A is installed on the right side of the upper end face of the top cover plate through a support, and the spray shell B is installed on the front side of the upper end face of the top cover plate through a support; the liquid infusion pipe is connected to the liquid inlet of the shunt pipe, and the lower end of the liquid infusion pipe is connected to the liquid outlet at the upper part of the liquid infusion pump; the liquid infusion pump is installed on the left side of the front end face of the transformer shell, and the liquid suction pipe is connected to the liquid suction port at the lower part of the liquid infusion pump; the filter screen is installed at the lower end of the liquid suction pipe; the distance between the lower surface of the filter screen and the bottom end face of the inside of the transformer shell is two to three centimeters.

[0012] Further, the liquid level monitoring mechanism comprises a bottom plate, vertical guide rods, a top plate, a sliding plate, a floating block, support sliding rods, a pressing plate and a pressing switch, the bottom plate is fixedly installed on the right side of the front part of the bottom end face of the liquid collecting tank, four vertical guide rods are fixedly connected to the upper end face of the bottom plate, the top plate is fixedly connected to the upper ends of the four vertical guide rods, the sliding plate is slidingly connected to the outside of the four vertical guide rods, the floating block is fixedly connected to the bottom of the sliding plate, two support sliding rods are fixedly connected between the upper ends of the two support sliding rods and the top plate, and the pressing plate is fixedly connected to the upper end face of the pressing plate.

[0013] Further, the liquid level monitoring mechanism further comprises a counterweight, an audible and visual alarm and a waterproof soft film, the counterweight is fixedly installed on the middle part of the upper end face of the pressing plate, the audible and visual alarm is installed on the top of the pressing plate, and the waterproof soft film is arranged on the upper end face of the top plate and located outside the pressing switch.

[0014] Further, when the distance between the bottom end face of the floating block and the bottom end face of the inside of the liquid collecting tank is twenty to thirty centimeters, the bottom end face of the pressing plate is in close contact with the upper surface of the waterproof soft film, and the button on the pressing switch is in a pressed state.

[0015] The magnetic fluid cooling transformer has the following advantages: In the application, the right end of the annular cooling pipe is located outside the right side of the transformer shell, so that the temperature of the magnetic fluid on the right side of the inside of the annular cooling pipe is lower than that of the magnetic fluid on the left side, thereby forming magnetic heat convection. According to the principle of magnetic heat convection, the magnetic fluid at the cold end moves to the hot end, thereby driving the magnetic fluid in the annular cooling pipe to circulate and flow, achieving the cooling effect of the transformer. Since the magnetic fluid can flow under the action of magnetic force, the traditional circulating water pump can be replaced, thereby effectively reducing the power consumption and improving the economy and reliability of the operation of the transformer.

[0016] In the application, the temperature sensor is used to monitor the temperature inside the transformer shell in real time. When the temperature inside the transformer shell exceeds the preset value, the control box starts the circulating pump, and the cooling liquid with heat inside the Z-shaped heat dissipation pipe is pushed to the front side of the Z-shaped heat dissipation pipe. Through the circulating water cooling effect of the water cooling mechanism, further cooling effect can be brought to the inside of the transformer shell, thereby greatly improving the efficiency of the transformer during operation. When the temperature inside the transformer shell is lower than the preset value, the control box turns off the circulating pump to avoid energy waste, achieving intelligent energy saving and high-efficiency cooling.

[0017] In the application, the spraying cooling mechanism is provided. In summer, the maintenance personnel add cooling liquid into the collecting tank, and start the liquid pump through the control box. The cooling liquid is delivered to the spraying shell A and the spraying shell B through the liquid suction pipe, the liquid delivery pipe and the shunt pipe, and is sprayed on the right outer wall of the annular cooling pipe and the front outer wall of the Z-shaped heat dissipation pipe, respectively, to cool and flush the surface dust, so as to ensure the heat exchange efficiency. The sprayed cooling liquid is recycled through the filter screen after being collected in the collecting tank. After the high-temperature period ends, the cooling liquid can be taken out for reuse next year, thereby significantly reducing the maintenance cost of the transformer in summer.

[0018] In the application, the liquid level monitoring mechanism is provided. When the cooling liquid is added into the collecting tank, the floating block can float on the surface of the cooling liquid in the collecting tank under the action of buoyancy. When the cooling liquid in the collecting tank is consumed during use, the liquid level of the cooling liquid in the collecting tank will gradually decrease. When the distance between the bottom end surface of the floating block and the bottom end surface of the collecting tank is 20-30 cm, the button on the press switch is in a pressed state. At this time, the control box will turn off the liquid pump to avoid the emptying of the liquid pump and improve the service life of the liquid pump. At the same time, the sound and light alarm is started to give effective warning to the maintenance personnel, thereby improving the reliability of the spraying cooling mechanism during operation. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the application, the drawings of the application will be briefly introduced below.

[0020] In the drawings: Figure 1 A structural schematic diagram of the overall structure of the application is shown; Figure 2 A structural schematic diagram of the rear view of the application is shown; Figure 3 A structural schematic diagram of the application in a split state is shown; Figure 4 A structural schematic diagram of the transformer shell of the application is shown. Figure 5 A structure schematic diagram of a magnetic fluid cooling pipe of the application is shown in the figure; Figure 6 A structure schematic diagram of a water cooling mechanism of the application is shown in the figure; Figure 7 A structure schematic diagram of a spray cooling mechanism of the application is shown in the figure; Figure 8 A structure schematic diagram of a liquid level monitoring mechanism of the application is shown in the figure; Figure 9 A structure schematic diagram of a waterproof soft film of the application is shown in the figure.

[0021] List of reference signs 1, transformer housing; 101, top cover plate; 102, support column; 103, liquid collecting groove; 104, iron core; 105, winding; 106, temperature sensor; 107, control box; 2, annular cooling pipe; 201, magnetic fluid; 202, permanent magnet; 203, liquid inlet; 204, threaded sealing cover; 3, water cooling mechanism; 301, shunt pipe; 302, confluence pipe; 303, circulating pump; 304, liquid adding tank; 305, Z-shaped heat dissipation pipe; 4, spray cooling mechanism; 401, shunt pipe; 402, spray shell A; 403, spray shell B; 404, liquid delivery pump; 405, liquid suction pipe; 406, filter screen; 407, liquid delivery pipe; 5, liquid level monitoring mechanism; 501, bottom plate; 502, vertical guide rod; 503, top plate; 504, sliding plate; 505, floating block; 506, support sliding rod; 507, pressing plate; 508, counterweight; 509, audible and visual alarm; 5010, waterproof soft film; 5011, pressing switch. DETAILED DESCRIPTION

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the described embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0023] Embodiment one: please refer to Figures 1 to 9 : The application provides a magnetic fluid cooling transformer, which comprises a transformer shell 1, a core 104 is arranged in the transformer shell 1, and a winding 105 is wound on the core 104; a plurality of annular cooling pipe fittings 2 are arranged in a rectangular array on the right side in the transformer shell 1, and each annular cooling pipe fitting 2 is filled with magnetic fluid 201; a water cooling mechanism 3 is arranged on the transformer shell 1, a top cover plate 101 is arranged on the top of the transformer shell 1, and a spraying cooling mechanism 4 is arranged on the front side and the right side of the upper end surface of the top cover plate 101; a liquid collecting tank 103 is fixedly connected to the bottom of the transformer shell 1 through a support column 102, the lower end of the support column 102 is fixedly connected to the inner bottom end surface of the liquid collecting tank 103, and the upper end of the support column 102 is fixedly connected to the bottom end surface of the transformer shell 1; a liquid level monitoring mechanism 5 is arranged in the liquid collecting tank 103 and used for monitoring the liquid level of the cooling liquid in the liquid collecting tank 103 in real time.

[0024] A temperature sensor 106 is arranged in the transformer shell 1, and a control box 107 is arranged on the left end surface of the transformer shell 1; the temperature sensor 106 is used for monitoring the temperature in the transformer shell 1 in real time.

[0025] A permanent magnet 202 is arranged on the right side of the upper end surface in the annular cooling pipe fitting 2, a liquid inlet 203 is arranged on the right side of the upper end surface outside the annular cooling pipe fitting 2, a threaded sealing cover 204 is threadedly connected to the upper end of the liquid inlet 203, and the magnetic fluid 201 can be conveniently filled into the annular cooling pipe fitting 2.

[0026] The magnetic fluid 201 comprises magnetic particles, transformer cooling oil and a surfactant; the transformer cooling oil is used as a base carrier liquid of the magnetic particles and the surfactant; the surfactant is oleic acid; the oleic acid surfactant can effectively stabilize the magnetic particles; and the volume fraction of the magnetic particles in the entire magnetic fluid 201 solution is 8%-12%.

[0027] The temperature of the magnetic fluid 201 on the left side in the annular cooling pipe fitting 2 is higher than that of the magnetic fluid 201 on the right side in the annular cooling pipe fitting 2; when the magnetic fluid 201 is in a non-isothermal state, the magnetic force in the magnetic fluid 201 is unbalanced due to the temperature difference; the unbalanced state drives the magnetic fluid 201 to perform macroscopic convective motion; specifically, the saturation magnetization of the temperature-sensitive magnetic fluid 201 is significantly reduced with the increase of the temperature; the temperature sensitivity leads to the occurrence of the magnetic heat convection phenomenon, thereby forming the magnetic heat convection.

[0028] The water cooling mechanism 3 comprises a shunt pipe 301, a collecting pipe 302, a circulating pump 303, a liquid adding tank 304, a Z-shaped heat dissipation pipe 305, the shunt pipe 301 and the collecting pipe 302 are fixedly installed on the upper and lower sides of the rear end face of the transformer shell 1 respectively, the shunt pipe 301 is connected with the liquid outlet of the circulating pump 303, the collecting pipe 302 is connected with the liquid inlet of the circulating pump 303, and the circulating pump 303 is installed on the rear end face of the transformer shell 1, the top of the shunt pipe 301 is provided with a liquid adding pipe, the upper end of the liquid adding pipe is connected with the liquid outlet at the bottom of the liquid adding tank 304, the liquid adding tank 304 is installed on the upper part of the rear side of the transformer shell 1, the top of the liquid adding tank 304 is provided with a liquid adding pipe opening, and the upper end of the liquid adding pipe opening is threadedly connected with a threaded cover, the Z-shaped heat dissipation pipe 305 is connected between the liquid outlet at the front end of the shunt pipe 301 and the liquid inlet at the front end of the collecting pipe 302 in a uniform manner, the liquid adding tank 304, the shunt pipe 301, the collecting pipe 302 and the Z-shaped heat dissipation pipe 305 are filled with cooling liquid, through the cooperation of the water cooling mechanism 3 and the temperature sensor 106, the temperature inside the transformer shell 1 can be monitored in real time through the temperature sensor 106, when the temperature inside the transformer shell 1 exceeds the preset value, the control box 107 starts the water cooling mechanism 3, through the circulating water cooling and heat dissipation effect of the water cooling mechanism 3, further cooling effect can be brought to the inside of the transformer shell 1, and therefore the efficiency of the transformer during operation is greatly improved.

[0029] The spray cooling mechanism 4 comprises a shunt pipe 401, a spray shell A 402, a spray shell B 403, a liquid conveying pump 404, a liquid suction pipe 405, a filter screen 406 and a liquid conveying pipe 407, the spray shell A 402 and the spray shell B 403 are connected on the shunt pipe 401 in a uniform manner, the spray shell A 402 is installed on the upper end face of the top cover plate 101 through a support on the right side, and the spray shell B 403 is installed on the upper end face of the top cover plate 101 through a support on the front side, the liquid inlet of the shunt pipe 401 is connected with the liquid conveying pipe 407, the lower end of the liquid conveying pipe 407 is connected with the liquid outlet at the upper part of the liquid conveying pump 404, the liquid conveying pump 404 is installed on the left side of the front end face of the transformer shell 1, the liquid suction pipe 405 is connected with the liquid inlet at the lower part of the liquid conveying pump 404, the filter screen 406 is installed at the lower end of the liquid suction pipe 405, and the distance between the lower surface of the filter screen 406 and the bottom end face inside the transformer shell 1 is two to three centimeters, the spray shell A 402 is located above the right side of the annular cooling pipe 2, the spray shell B 403 is located above the front side of the Z-shaped heat dissipation pipe 305, and the spray heads are arranged at the bottoms of the spray shell A 402 and the spray shell B 403, through the arrangement of the spray cooling mechanism 4, the right side outer wall of the annular cooling pipe 2 and the front side outer wall of the Z-shaped heat dissipation pipe 305 can be sprayed and cooled in summer.

[0030] In the embodiment two, based on the embodiment one, Figure 1 , Figure 8 and Figure 9As shown, the liquid level monitoring mechanism 5 includes a base plate 501, vertical guide rods 502, a top plate 503, a sliding plate 504, a float block 505, a support slide rod 506, a pressing plate 507, and a pressing switch 5011. The base plate 501 is fixedly installed inside the bottom right front part of the liquid collection tank 103, and four vertical guide rods 502 are fixedly connected to the upper end of the base plate 501. The top plate 503 is fixedly connected to the upper end of the four vertical guide rods 502, and the sliding plate 504 is slidably connected to the outside of the four vertical guide rods 502. The float block 505 is fixedly connected to the bottom of the sliding plate 504, and two support slide rods 506 penetrating the top plate 503 are fixedly connected to the upper end of the sliding plate 504. The support slide rods 506 are slidably connected to the top plate 503, and the upper ends of the two support slide rods 506 are fixedly connected together. A press plate 507 is attached; a press switch 5011 is installed in the middle of the upper end face of the top plate 503; the liquid level monitoring mechanism 5 also includes a counterweight 508, an audible and visual alarm 509, and a waterproof membrane 5010. The counterweight 508 is fixedly installed in the middle of the upper end face of the press plate 507, and the audible and visual alarm 509 is installed on the top of the press plate 507. The waterproof membrane 5010 is set on the upper end face of the top plate 503 and is located outside the press switch 5011. The waterproof membrane 5010 is made of thermoplastic polyurethane, which has good sun protection and waterproof effect, providing reliable waterproof effect for the press switch 5011. The thermoplastic polyurethane material also has excellent elasticity and flexibility, avoiding obstruction when pressing the button on the press switch 5011.

[0031] When the distance between the bottom surface of the floating block 505 and the bottom surface inside the liquid collection tank 103 is 20 to 30 centimeters, the bottom surface of the pressing plate 507 is in close contact with the upper surface of the waterproof membrane 5010. At this time, the button on the pressing switch 5011 is in the pressing state. At this time, the control box 107 will turn off the infusion pump 404 to avoid the infusion pump 404 from cavitation and improve the service life of the infusion pump 404. At the same time, the audible and visual alarm 509 will be activated to provide an effective warning to maintenance personnel and improve the reliability of the spray cooling mechanism 4 during operation.

[0032] The working principle of this invention: During operation, the heat generated by the core 104 and winding 105 accumulates on the upper side inside the transformer casing 1. This heat is then transferred through the left side wall of the annular cooling pipe 2 to the magnetic fluid 201 inside the annular cooling pipe 2. Figure 1As shown, since the right end of the annular cooling pipe 2 is outside the right side of the transformer shell 1, the temperature of the magnetic fluid 201 inside the annular cooling pipe 2 on the right side is lower than that on the left side. When the magnetic fluid 201 is in a non-isothermal state, the magnetic force inside the magnetic fluid 201 will be unbalanced due to the temperature difference, which will drive the magnetic fluid 201 to perform macroscopic convective motion. Specifically, the saturation magnetization of the temperature-sensitive magnetic fluid 201 will decrease significantly with the increase of temperature. This temperature sensitivity leads to the occurrence of magnetic heat convection, thereby forming magnetic heat convection. According to the principle of magnetic heat convection, the magnetic fluid 201 at the cold end (right end) will move to the hot end (left end), thereby driving the magnetic fluid 201 inside the annular cooling pipe 2 to circulate and flow, achieving the cooling effect of the transformer. Since the magnetic fluid 201 can flow under the action of magnetic force, it is not necessary to additionally provide a circulating water pump for driving, thereby reducing the loss of electric energy. The permanent magnet 202 is installed on the upper end face of the right side inside the annular cooling pipe 2. The cold end of the magnetic fluid 201 is on the right side of the permanent magnet 202, and the hot end of the magnetic fluid 201 is on the left side of the permanent magnet 202. The magnetic field generated by the permanent magnet 202 can magnetize the magnetic fluid 201 flowing through the magnetic field, thereby providing a constant magnetic field for the magnetic fluid 201 inside the annular cooling pipe 2.

[0033] Then the temperature inside the transformer shell 1 is monitored in real time by the temperature sensor 106. When the temperature inside the transformer shell 1 exceeds the preset value, the control box 107 starts the circulating pump 303, and the cooling liquid inside the collecting pipe 302 is delivered to the inside of the distributing pipe 301 through the circulating pump 303, so that the cooling liquid inside the distributing pipe 301, the H-shaped heat dissipation pipe 305 and the collecting pipe 302 flows in the clockwise direction, as shown in Figure 1 As shown, since the front end of the H-shaped heat dissipation pipe 305 is outside the front side of the transformer shell 1, the temperature of the cooling liquid inside the H-shaped heat dissipation pipe 305 on the front side will be lower than that on the rear side. Then, after flowing in the clockwise direction, the cooling liquid with heat on the rear side inside the H-shaped heat dissipation pipe 305 is pushed to the front side inside the H-shaped heat dissipation pipe 305. The cooling liquid with heat is cooled by the front side of the H-shaped heat dissipation pipe 305. In this way, through the circulating water cooling effect of the water cooling mechanism 3, further cooling effect can be brought to the inside of the transformer shell 1, thereby greatly improving the efficiency of the transformer during operation. Moreover, when it is monitored that the temperature inside the transformer shell 1 is lower than the preset value, the control box 107 will be closed, thereby being more energy-saving.

[0034] During hot summer weather, maintenance personnel can add anti-corrosion coolant (or a mixture of water and anti-corrosion additives) into the collection tank 103. Then, the infusion pump 404 is started via the control box 107, and the coolant inside the collection tank 103 is delivered to the infusion pipe 407, the distribution pipe 401, the spray housing A402, and the spray housing B403 via the suction pipe 405. The coolant is then sprayed onto the right side of the annular cooling pipe 2 through the spray nozzle at the bottom of the spray housing A402, cooling the outer wall of the right side of the annular cooling pipe 2. The coolant is also sprayed onto the front side of the U-shaped heat dissipation pipe 305 through the spray nozzle at the bottom of the spray housing B403, cooling the outer wall of the annular cooling pipe 2. The outer front wall of the U-shaped heat dissipation tube 305 is sprayed with coolant for cooling. The sprayed coolant also washes away the dust adhering to the outer right side of the annular cooling tube 2 and the outer front wall of the U-shaped heat dissipation tube 305, preventing it from affecting the heat exchange of the annular cooling tube 2 and the U-shaped heat dissipation tube 305, thereby improving the heat dissipation effect of the annular cooling tube 2 and the U-shaped heat dissipation tube 305. The sprayed coolant is collected in the collection tank 103 and then filtered by the filter screen 406 for recycling. After the high temperature weather in summer, the coolant in the collection tank 103 can be taken out for reuse the following year, thereby effectively reducing the maintenance cost of this transformer in the high temperature weather in summer.

[0035] The following points should be noted in this article: 1. The accompanying drawings of the embodiments of the present invention only involve the structures involved in the embodiments of the present invention; other structures can refer to general designs.

[0036] 2. Where there is no conflict, the embodiments of the present invention and the features thereof can be combined with each other to obtain new embodiments.

[0037] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A magnetohydrodynamic cooled transformer, comprising: A transformer housing (1) is provided, with an iron core (104) installed inside the housing and a winding (105) wound around the iron core (104). The housing is characterized in that annular cooling pipes (2) are installed in a rectangular array on the right side inside the housing, and each annular cooling pipe (2) is filled with magnetic fluid (201). A water cooling mechanism (3) is installed on the housing (1), and a top cover plate (101) is installed on the top of the housing (1), with a spray cooling mechanism (4) installed on the front and right sides of the top end of the top cover plate (101). A liquid collection tank (103) is fixedly connected to the bottom of the housing (1) by a support column (102), and the lower end of the support column (102) is fixedly connected to the bottom surface inside the liquid collection tank (103), and the upper end of the support column (102) is fixedly connected to the bottom surface of the housing (1). A liquid level monitoring mechanism (5) is provided inside the liquid collection tank (103).

2. A magnetohydrodynamic cooling transformer according to claim 1, characterized in that: A temperature sensor (106) is installed inside the transformer casing (1), and a control box (107) is installed on the left end face of the transformer casing (1).

3. A magnetohydrodynamic cooling transformer according to claim 1, characterized in that: A permanent magnet (202) is installed on the upper right side of the inner side of the annular cooling pipe (2), and a liquid inlet (203) is provided on the upper right side of the outer side of the annular cooling pipe (2), and a threaded sealing cap (204) is connected to the upper end of the liquid inlet (203) by a thread.

4. A magnetohydrodynamic cooling transformer according to claim 1, characterized in that: The magnetic fluid (201) includes tiny magnetic particles, transformer cooling oil, and surfactant. The transformer cooling oil serves as the base carrier for the magnetic particles and surfactant, and the surfactant is oleic acid. The tiny magnetic particles account for 8%-12% of the total volume fraction of the magnetic fluid (201) solution.

5. A magnetohydrodynamic cooling transformer according to claim 1, characterized in that: The temperature of the magnetic fluid (201) on the left side inside the annular cooling pipe (2) is higher than the temperature of the magnetic fluid (201) on the right side inside the annular cooling pipe (2).

6. A magnetohydrodynamic cooling transformer according to claim 1, characterized in that: The water cooling mechanism (3) includes a shunt pipe (301), a manifold pipe (302), a circulating pump (303), a liquid filling tank (304), and a U-shaped heat dissipation pipe (305). The shunt pipe (301) and the manifold pipe (302) are respectively fixedly installed on the upper and lower sides of the rear end face of the transformer casing (1). The shunt pipe (301) is connected to the outlet of the circulating pump (303), and the manifold pipe (302) is connected to the suction port of the circulating pump (303). The circulating pump (303) is installed on the transformer. The rear end face of the transformer housing (1) has a liquid filling pipe at the top of the shunt pipe (301), and the upper end of the liquid filling pipe is connected to the liquid outlet at the bottom of the liquid filling tank (304). The liquid filling tank (304) is installed on the upper rear side of the transformer housing (1), and the top of the liquid filling tank (304) has a liquid filling pipe port, and the upper end of the liquid filling pipe port is connected to a threaded cap by a thread. The liquid outlet at the front end of the shunt pipe (301) and the liquid inlet at the front end of the manifold (302) are uniformly connected by a U-shaped heat dissipation pipe (305).

7. A magnetohydrodynamic cooling transformer according to claim 1, characterized in that: The spray cooling mechanism (4) includes a distribution pipe (401), a spray housing A (402), a spray housing B (403), a pump (404), a suction pipe (405), a filter screen (406), and a delivery pipe (407). The distribution pipe (401) is uniformly connected to the spray housing A (402) and the spray housing B (403). The spray housing A (402) is mounted on the right side of the upper end face of the top cover plate (101) by a bracket, and the spray housing B (403) is mounted on the top cover plate (101) by a bracket. On the front side of the upper end; the inlet of the diversion pipe (401) is connected to the infusion fitting (407), and the lower end of the infusion fitting (407) is connected to the upper outlet of the infusion pump (404). The infusion pump (404) is installed on the left side of the front end face of the transformer shell (1), and the lower suction port of the infusion pump (404) is connected to the suction fitting (405). The lower end of the suction fitting (405) is equipped with a filter screen (406), and the distance between the lower surface of the filter screen (406) and the inner bottom face of the transformer shell (1) is two to three centimeters.

8. A magnetohydrodynamic cooling transformer according to claim 1, characterized in that: The liquid level monitoring mechanism (5) includes a base plate (501), vertical guide rods (502), a top plate (503), a sliding plate (504), a float block (505), a support slide rod (506), a pressing plate (507), and a pressing switch (5011). The base plate (501) is fixedly installed on the front right side of the bottom end face inside the liquid collection tank (103), and four vertical guide rods (502) are fixedly connected to the upper end face of the base plate (501). The top plate (503) is fixedly connected to the upper end of the four vertical guide rods (502). Furthermore, a sliding plate (504) is slidably connected to the outside of the four vertical guide rods (502). A floating block (505) is fixedly connected to the bottom of the sliding plate (504). Two support slide rods (506) that penetrate the top plate (503) are fixedly connected to the upper surface of the sliding plate (504). The support slide rods (506) are slidably connected to the top plate (503). A pressing plate (507) is fixedly connected between the upper ends of the two support slide rods (506). A pressing switch (5011) is installed in the middle of the upper surface of the top plate (503).

9. A magnetohydrodynamic cooling transformer according to claim 8, characterized in that: The liquid level monitoring mechanism (5) also includes a counterweight (508), an audible and visual alarm (509), and a waterproof membrane (5010). The counterweight (508) is fixedly installed in the middle of the upper end face of the pressing plate (507), and the audible and visual alarm (509) is installed on the top of the pressing plate (507). The waterproof membrane (5010) is set on the upper end face of the top plate (503), and the waterproof membrane (5010) is located outside the pressing switch (5011).

10. A magnetohydrodynamic cooling transformer according to claim 9, characterized in that: When the distance between the bottom surface of the floating block (505) and the bottom surface inside the liquid collection tank (103) is 20 to 30 centimeters, the bottom surface of the pressing plate (507) is in close contact with the upper surface of the waterproof membrane (5010), and the button on the pressing switch (5011) is in the pressing state.

Images