Dry-type transformer with epoxy resin pouring structure

Abstract

The utility model provides a dry-type transformer with an epoxy resin pouring structure. The dry-type transformer comprises a shell, a transformer coil, a water cooling device and a fire extinguishing device, the transformer coil is mounted at the inner bottom of the shell; the water cooling device comprises a plurality of heat conducting plates inserted between transformer coils, the two ends of each heat conducting plate are connected with heat gathering rings, a condensation pipe is arranged in each heat gathering ring, and the upper end and the lower end of each condensation pipe are connected with a water inlet pipe and a water outlet pipe respectively. During use, heat generated after the transformer is started is transmitted to the heat gathering ring through the heat conducting plate to be gathered, the cooling fins are opened to condense water in the water tank, then the driving water pump pumps condensate water to supply water to the main water conveying pipeline, the condensate water is introduced into the condensation pipe through the main water conveying pipeline and the water inlet pipe, cold and heat exchange is conducted, and the rapid heat dissipation capacity is achieved; and the heat-exchanged water is converged to the main drainage pipeline through the water outlet pipe and returns to the water tank again, so that water recycling is realized, and resources are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a dry-type transformer with an epoxy resin casting structure. Background Art

[0002] Epoxy resin dry-type transformers use epoxy resin as their insulation material. High and low voltage windings are wound with copper strip (foil), then epoxy resin is poured and cured in a vacuum, resulting in a high-strength fiberglass reinforced plastic (FRP) structure. Insulation grades are F and H. Epoxy resin dry-type transformers offer excellent electrical performance, strong lightning surge and short-circuit resistance, and are compact and lightweight.

[0003] Conventional heat dissipation in dry-type transformers is achieved through fans, which force cool air into the transformer to accelerate heat dissipation. However, this method is inefficient and fails to quickly dissipate the heat generated by the transformer. This can lead to damage due to thermal overload.

[0004] To this end, we propose a dry-type transformer with an epoxy resin casting structure to solve the problem of low internal heat dissipation efficiency of the transformer in the existing technology, which affects the service life of the transformer. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a dry-type transformer with an epoxy resin casting structure, which is used to solve the problem of low internal heat dissipation efficiency of the transformer in the prior art, which affects the service life of the transformer.

[0006] To achieve the above-mentioned and other related purposes, the present invention provides a dry-type transformer with an epoxy resin casting structure, comprising: a housing, a transformer coil, a water cooling device, and a fire extinguishing device;

[0007] The transformer coil is mounted on the inner bottom of the housing;

[0008] The water cooling device includes a plurality of heat conducting plates inserted between the transformer coils, the left and right ends of each heat conducting plate are connected to a heat collecting ring, each heat collecting ring is provided with a condenser tube inside, the upper and lower ends of each condenser tube are respectively connected to a water inlet pipe and a water outlet pipe, the other end of each water inlet pipe is connected to the same main water supply pipe, and each water outlet pipe is connected to the same main drainage pipe;

[0009] The fire extinguishing device is located inside the shell and is used to detect and extinguish fire on the transformer coil.

[0010] Preferably, the upper end of the heat-collecting ring is closed and penetrated by a water inlet pipe, and the outer surface of the heat-collecting ring is adhered with a heat-insulating layer.

[0011] Preferably, the condenser is a spiral structure, and a one-way valve is installed on the water outlet pipe.

[0012] Preferably, the other ends of the main water supply pipeline and the main drainage pipeline are both connected to the same water tank, a cooling plate is installed on the water tank, and the water tank supplies water to the main water supply pipeline by driving a water pump.

[0013] Preferably, the fire extinguishing device includes a smoke sensor installed on the top of the shell, the transformer coil is surrounded by a frame, both sides of the lower end of the frame are connected to electric push rods, the two electric push rods are respectively located on both sides of the inner bottom of the shell, the inner side wall of the frame is connected to several flame sensors, the upper end of the frame is connected to several fixing brackets, and each fixing bracket is connected to a fire extinguisher.

[0014] Preferably, a switch assembly is provided at the bottom of the fixing frame, and the switch assembly includes a motor, the output end of the motor is connected to a screw, the screw is threadedly connected to a slider, the two ends of the slider are slidably connected to the inner side walls of the two ends of the fixing frame and the middle is penetrated by the screw, the upper end of the slider is connected to an extrusion block, the fire extinguisher is arranged at an angle and the press switch is located just above the extrusion block, and can be pushed by the extrusion block to cause the fire extinguisher to spray dry powder.

[0015] Preferably, the four corners of the frame extend outward to form guide blocks, and the interior of the shell is provided with sliding rods corresponding to the positions of the four guide blocks, and each of the guide blocks is penetrated by the corresponding sliding rod.

[0016] Preferably, a plurality of steering wheels are connected to the lower end of the shell, and a temperature sensor is connected to the inner top of the shell.

[0017] As described above, the utility model discloses a dry-type transformer with an epoxy resin cast structure, which has the following beneficial effects: the utility model transfers the heat after the transformer is started to the heat collecting ring through the heat conducting plate, opens the cooling plate to condense the water inside the water tank, and then drives the water pump to extract the condensed water to supply water to the main water supply pipeline. The condensed water is passed into the condensing pipe through the main water supply pipeline and the water inlet pipe to exchange heat and realize rapid heat dissipation capability; the water after heat exchange is gathered into the main drainage pipe through the outlet pipe and returned to the water tank, realizing water recycling and saving resources.

[0018] At the same time, after the smoke sensor senses the fire inside the shell, it starts the electric push rod to drive the frame to rise and fall, uses the flame sensor to sense the specific location of the fire, and sends a signal to stop the electric push rod from running, automatically opens the fire extinguisher at the sensed position, and performs the fire extinguishing operation, thereby effectively extinguishing the fire point inside the transformer, avoiding the blind spots of one-way fire extinguishing and the low fire extinguishing efficiency.

[0019] Therefore, the utility model effectively overcomes various shortcomings of the prior art and has high industrial utilization value. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Shown is a three-dimensional diagram of a dry-type transformer with an epoxy resin casting structure according to the present invention.

[0021] Figure 2 Shown is a cross-sectional view of the heat-collecting ring of a dry-type transformer with an epoxy resin casting structure according to the present invention.

[0022] Figure 3 The diagram shows the condenser pipe connection structure of a dry-type transformer with an epoxy resin casting structure according to the present invention.

[0023] Figure 4 Shown is a front view of a dry-type transformer with an epoxy resin casting structure according to the present invention.

[0024] Figure 5 Shown is a connection diagram of the switch assembly of a dry-type transformer with an epoxy resin casting structure according to the present invention.

[0025] Component number description

[0026] 1. Housing; 10. Transformer coil; 11. Sliding rod;

[0027] 2. Water cooling device; 20. Heat conducting plate; 21. Heat collecting ring; 22. Condenser; 23. Water inlet pipe; 24. Water outlet pipe; 25. Main water supply pipe; 26. Main drainage pipe; 27. Insulation layer; 28. Water tank; 29. ​​Cooling plate;

[0028] 3. Fire extinguishing device; 30. Smoke sensor; 31. Frame; 32. Electric push rod; 33. Flame sensor; 34. Fixing bracket; 35. Fire extinguisher; 36. Switch assembly; 360. Motor; 361. Screw; 362. Slider; 363. Extrusion block; 37. Guide block. DETAILED DESCRIPTION

[0029] The following describes the implementation of the present invention through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0030] See also Figures 1 to 5. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of this utility model. Therefore, they have no substantive technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by this utility model without affecting the efficacy and purpose that can be achieved by this utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of this utility model. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of this utility model without substantially changing the technical content.

[0031] like Figure 1-5 As shown, the present invention provides a dry-type transformer with an epoxy resin casting structure, comprising: a housing 1, a transformer coil 10, a water cooling device 2, and a fire extinguishing device 3; the transformer coil 10 is mounted on the inner bottom of the housing 1 and is cast with epoxy resin, achieving advantages such as good electrical performance, strong lightning strike resistance, strong short-circuit resistance, small size and light weight. The water cooling device 2 includes a plurality of heat conducting plates 20 interspersed between the transformer coils 10, each heat conducting plate 20 being connected to a heat collecting ring 21 at both ends, each heat collecting ring 21 being provided with a condensing pipe 22 inside, each condensing pipe 22 being connected to a water inlet pipe 23 and a water outlet pipe 24 at both ends, respectively, each water inlet pipe 23 being connected to the same main water supply pipe 25 at the other end, and each water outlet pipe 24 being connected to the same main drainage pipe 26. During operation, the input end of the main water supply pipe 25 is connected to a condensate source. After the transformer is started, the transformer coil 10 generates a large amount of heat, which is transferred to the heat collection ring 21 through the heat conducting plate 20 for collection. Condensate is then introduced into the main water supply pipe 25. This condensate then flows through the main water supply pipe 25 and the water inlet pipe 23 into the condenser tube 22, exchanging heat and cold for rapid heat dissipation. A fire extinguishing device 3 is located within the housing 1 and is used to detect and extinguish fires on the transformer coil 10.

[0032] In one embodiment, the upper end of the heat-collecting ring 21 is sealed and penetrated by the water inlet pipe 23. This sealing reduces the rate at which heat escapes from the heat-collecting ring 21, facilitating heat collection for heat exchange in the condenser tube 22. A heat-insulating layer 27 is applied to the outer surface of the heat-collecting ring 21 to isolate the heat from the heat-collecting ring 21 and prevent the heat from escaping, which could reduce the heat exchange efficiency of the condenser tube 22.

[0033] In one embodiment, the condenser 22 is a spiral structure, which is beneficial for increasing the contact area with the hot air and improving the efficiency of heat exchange. A one-way valve is installed on the water outlet pipe 24 to prevent water backflow.

[0034] In one embodiment, the other ends of the main water supply pipe 25 and the main drainage pipe 26 are both connected to a common water tank 28. The water tank 28 can be placed on top of the housing 1 for easy movement with the housing 1. Cooling fins 29 are installed on the water tank 28 to condense and cool the water in the water tank 28. The water tank 28 supplies water to the main water supply pipe 25 by driving a water pump.

[0035] In one embodiment, the fire extinguishing device 3 includes a smoke sensor 30 mounted on the top of the housing 1. The transformer coil 10 is surrounded by a frame 31. Electric push rods 32 are connected to both sides of the lower end of the frame 31. Two electric push rods 32 are located on either side of the inner bottom of the housing 1. Several flame sensors 33 are connected to the inner sidewalls of the frame 31. The upper end of the frame 31 is connected to several fixing brackets 34, each of which is connected to a fire extinguisher 35. During use, the smoke sensor 30 first senses the fire inside the housing 1. The electric push rods 32 are then activated to drive the frame 31 up and down. The flame sensor 33 senses the specific location of the fire and sends a signal to stop the electric push rods 32, opening the fire extinguisher 35 at the corresponding location to extinguish the fire. The fire extinguishing device 3 can effectively extinguish the fire at the starting point inside the transformer, avoiding the blind spots and low fire extinguishing efficiency of one-way fire extinguishing.

[0036] In one embodiment, a switch assembly 36 is provided at the bottom of the mounting bracket 34. The switch assembly 36 includes a motor 360 located at the inner bottom of the mounting bracket 34. The output end of the motor 360 is connected to a screw 361, which is threadedly connected to a slider 362. The slider 362 is slidably connected to the inner sidewalls of the mounting bracket 34 at both ends, and the screw 361 penetrates the middle. The upper end of the slider 362 is connected to a squeeze block 363. The fire extinguisher 35 is tilted, and the push switch is located directly above the squeeze block 363. The squeeze block 363 can be used to push the fire extinguisher 35 to spray dry powder. During use, by starting the motor 360, the motor 360 drives the screw 361 to rotate, which pushes the slider 362 upward along the mounting bracket 34. The slider 362 drives the squeeze block 363 upward to squeeze the switch of the fire extinguisher 35, thereby electrically opening the fire extinguisher 35. This reduces the time required to open the housing 1 and improves fire extinguishing efficiency.

[0037] In one embodiment, the four corners of the frame 31 extend outward to form guide blocks 37. Slide rods 11 are positioned within the housing 1, corresponding to the positions of the four guide blocks 37. Each guide block 37 is penetrated by a corresponding slide rod 11. The slide rods 11 and guide blocks 37 cooperate to restrict the frame 31 from moving up and down along the slide rods 11, preventing deflection and enhancing the stability of the frame 31.

[0038] In an embodiment, the lower end of the shell 1 is connected with a plurality of steering wheels, and the transformer is moved conveniently through the steering wheels.

[0039] The specific use process of the utility model is as follows: the heat after the start of the transformer is gathered through the heat-conducting plate 20 and the heat-collecting ring 21, the cooling sheet 29 is opened to condense the water in the water tank 28, the driving water pump extracts the condensed water to supply water to the main water supply pipeline 25, the condensed water is introduced into the condensing pipe 22 through the main water supply pipeline 25 and the water inlet pipe 23, and the condensed water is exchanged, the heat dissipation capacity is fast, the water after heat exchange is gathered to the main water discharge pipeline 26 and is returned to the water tank 28, water circulation is realized, and resources are saved.

[0040] When the smoke sensor 30 senses the fire in the shell 1, the electric push rod 32 is started, the frame 31 is driven to ascend and descend, the flame sensor 33 is used to sense the specific position of the fire, a signal is sent to stop the operation of the electric push rod 32, the motor 360 of the sensed position is started, the motor 360 drives the screw rod 361 to rotate, the screw rod 361 drives the sliding block 362 to move upwards along the fixed frame 34, the sliding block 362 drives the extrusion block 363 to move upwards to extrude the switch of the fire extinguisher 35, the fire extinguisher 35 is automatically opened, the fire extinguishing operation is carried out, the internal fire point of the transformer is effectively extinguished, the problem that there is a dead angle in one-way fire extinguishing and the fire extinguishing efficiency is low is avoided.

[0041] Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

[0042] The above-mentioned embodiments only exemplarily illustrate the principle and effect of the utility model, and are not used to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and category of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A dry-type transformer with an epoxy resin casting structure, characterized in that: include: A housing (1), a transformer coil (10), a water cooling device (2), and a fire extinguishing device (3); The transformer coil (10) is mounted on the inner bottom of the housing (1); The water cooling device (2) includes a plurality of heat conducting plates (20) inserted between the transformer coils (10), the left and right ends of each heat conducting plate (20) are connected to heat collecting rings (21), the interior of each heat collecting ring (21) is provided with a condenser (22), the upper and lower ends of each condenser (22) are respectively connected to a water inlet pipe (23) and a water outlet pipe (24), the other end of each water inlet pipe (23) is connected to the same main water supply pipe (25), and each water outlet pipe (24) is connected to the same main drainage pipe (26); The fire extinguishing device (3) is located inside the housing (1) and is used to detect and extinguish fire on the transformer coil (10).

2. The dry-type transformer with epoxy resin casting structure according to claim 1, characterized in that: The upper end of the heat-collecting ring (21) is closed and penetrated by the water inlet pipe (23), and the outer surface of the heat-collecting ring (21) is adhered with a heat-insulating layer (27).

3. The dry-type transformer with epoxy resin casting structure according to claim 1, characterized in that: The condenser pipe (22) is a spiral structure, and a one-way valve is installed on the water outlet pipe (24).

4. The dry-type transformer with epoxy resin casting structure according to claim 1, characterized in that: The other ends of the main water supply pipeline (25) and the main drainage pipeline (26) are both connected to the same water tank (28). A cooling plate (29) is installed on the water tank (28). The water tank (28) supplies water to the main water supply pipeline (25) by driving a water pump.

5. The dry-type transformer with epoxy resin casting structure according to claim 1, characterized in that: The fire extinguishing device (3) includes a smoke sensor (30) installed on the top of the shell (1), a frame (31) surrounds the transformer coil (10), and electric push rods (32) are connected to both sides of the lower end of the frame (31). The two electric push rods (32) are respectively located on both sides of the inner bottom of the shell (1). The inner side wall of the frame (31) is connected to a plurality of flame sensors (33), and the upper end of the frame (31) is connected to a plurality of fixing frames (34), and each fixing frame (34) is connected to a fire extinguisher (35).

6. The dry-type transformer with epoxy resin casting structure according to claim 5, characterized in that: A switch assembly (36) is provided at the bottom of the fixing frame (34), and the switch assembly (36) includes a motor (360). The output end of the motor (360) is connected to a screw (361), and the screw (361) is threadedly connected to a slider (362). The two ends of the slider (362) are slidably connected to the inner side walls of the two ends of the fixing frame (34), and the middle part is penetrated by the screw (361). The upper end of the slider (362) is connected to an extrusion block (363). The fire extinguisher (35) is tilted and the press switch is located just above the extrusion block (363). The fire extinguisher (35) can be pushed by the extrusion block (363) to spray dry powder from the fire extinguisher (35).

7. The dry-type transformer with epoxy resin casting structure according to claim 5, characterized in that: The four corners of the frame (31) extend outward to form guide blocks (37), and the interior of the housing (1) is provided with slide bars (11) corresponding to the positions of the four guide blocks (37), and each guide block (37) is penetrated by the corresponding slide bar (11).

8. The dry-type transformer with epoxy resin casting structure according to claim 1, characterized in that: The lower end of the shell (1) is connected to a plurality of steering wheels, and the inner top of the shell (1) is connected to a temperature sensor.

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