Low-temperature-rise three-dimensional heat-dissipation Huai-type box transformer substation low-voltage chamber for smart power grid

Abstract

The invention belongs to the technical field of electrical equipment of a power grid, and particularly relates to a low-temperature-rise three-dimensional heat dissipation Washan box-type transformer substation low-voltage chamber for an intelligent power grid, which comprises a transformer substation main body and a top cover fixed at the top of the transformer substation main body, and is characterized in that a draught hood is fixedly mounted on the top cover in a penetrating manner; an air inlet shutter is fixedly installed on the side wall of the transformation chamber main body in a penetrating mode, a dust cleaning assembly is fixedly installed on the side, away from the transformation chamber main body, of the air inlet shutter, the dust cleaning assembly comprises a frame, and an annular filter screen is rotatably installed on the frame. Cold air entering the transformer chamber body can be filtered through the annular filter screen, and then in the rotating process of the annular filter screen, part of hot air exhausted by the draught hood can conduct back flushing, dredging, cleaning and heating on the annular filter screen from inside to outside; drying of winged insects on the annular filter screen can be accelerated through heating, and then the dried winged insects on the annular filter screen can be easily scraped off through the scraping and sweeping suction mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of power grid electrical equipment, and in particular to a Chinese-style box-type transformer low-voltage chamber with low-temperature rise and three-dimensional heat dissipation for a smart grid. Background Art

[0002] Hua-style box-type substations (Hua-style box-type substations) are widely used in power distribution systems due to their compact structure and high protection level. However, their low-voltage compartments have the following problems in long-term operation:

[0003] Excessive temperature rise: Traditional low-voltage rooms rely on natural convection or forced air cooling for heat dissipation, which has low heat dissipation efficiency. This can cause components in the cabinet (such as circuit breakers and capacitors) to have excessive temperature rise, shortening their lifespan or even causing failure.

[0004] Dust accumulation: Existing heat dissipation designs require external air intake for air circulation, but the air intake lacks an efficient dust removal structure. Dust enters the cabinet with the airflow and adheres to the surface of electrical components, which not only increases temperature rise (dust hinders heat dissipation) but may also cause safety hazards such as discharge and short circuit.

[0005] In the prior art, a filter is added to the air inlet of the low-pressure chamber to filter dust in the air. However, in an environment with a large number of flying insects, the cleaning method of the existing air inlet filter is likely to crush the flying insects, causing their body fluids mixed with dust to stick to the filter, which is likely to cause clogging of the filter mesh and subsequent cleaning is also very troublesome. Therefore, a Chinese-style box-type transformer low-pressure chamber with low-temperature rise and three-dimensional heat dissipation for smart grids is proposed. Summary of the Invention

[0006] In order to solve the shortcomings of the prior art, the present invention proposes a Chinese-style box-type transformer low-voltage chamber with low-temperature rise and three-dimensional heat dissipation for smart grids.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a low-voltage box transformer chamber with low-temperature rise and three-dimensional heat dissipation for smart grid, comprising a transformer chamber main body and a top cover fixed on the top of the transformer chamber main body, an exhaust hood is fixedly installed through the top cover, and an air intake louver is fixedly installed through the side wall of the transformer chamber main body, and a dust removal component is fixedly installed on the side of the air intake louver away from the transformer chamber main body, and the dust removal component includes a frame, and an annular filter is rotatably installed on the frame, and the annular filter is used to filter the cold air entering the transformer chamber main body. During the rotation of the annular filter, the exhaust hood uses part of the hot air discharged from the transformer chamber entity to backblow and heat a part of the annular filter, and then scrapes and cleans the heated and dried part of the annular filter, and finally uses part of the cold air to enter the transformer chamber main body to cool down the scraped part of the annular filter.

[0008] Preferably, the frame is provided with two rectangular openings, the annular filter screen passes through the two rectangular openings and is slidingly connected to the inner wall of the rectangular opening, two vertical plates 1 are fixedly installed on the top of the frame, two driving rollers are rotatably installed between the two vertical plates 1, the two driving rollers are located inside the annular filter screen and are meshed with the annular filter screen, two vertical plates 2 are fixedly installed on the bottom of the frame, a driven roller 2 is rotatably installed between the two vertical plates 2, the driven roller 2 is located inside the annular filter screen and is rollingly connected to the annular filter screen.

[0009] Preferably, a reduction motor is fixedly mounted on the vertical plate, the output shaft of the reduction motor is fixedly connected to the end of the corresponding driving roller, and a plurality of conical top rods are fixedly mounted on the side of the driving roller, and the conical top rods are adapted to the filter holes on the annular filter screen.

[0010] Preferably, a rectangular box is fixedly installed on the top of the frame, and the rectangular box is located below two conical top rods. The rectangular box is inside the annular filter screen, and both sides of the rectangular box are slidably connected to the inner wall of the annular filter screen. A plurality of air jet holes distributed at equal intervals are provided on the inner walls of both sides of the rectangular box. A duct is fixedly installed through one side of the rectangular box, and an air collecting hood is fixedly installed on the end of the duct away from the rectangular box. A plurality of air outlets are provided on the side wall of the exhaust hood, and the air collecting hood is fixedly connected to the side of the air outlet and is communicated with one of the air outlets.

[0011] Preferably, a scraping and suction mechanism is fixedly installed on the top of the frame, and a driven roller is rotatably installed between the inner walls on both sides of the frame. The driven roller is located on the outside of the annular filter and is rollingly connected to the annular filter. A guide plate is fixedly installed between the top inner walls of the frame, and the driven roller is located between the annular filter and the guide plate. A cooling chamber is formed between the annular filter and the guide plate, and the scraping and suction mechanism is connected to the cooling chamber.

[0012] Preferably, the scraping and suction mechanism includes a suction box, which passes through the frame and is fixedly connected to the frame. The suction box is provided with an opening one on the side close to the annular filter screen, and a scraper is fixedly installed on the bottom inner wall of the opening one. The scraper is slidably connected to the outer side surface of the annular filter screen. The bottom of the suction box is provided with an opening three connected to the cooling chamber, and the suction box is also provided with an opening two connected to the opening one and the opening three. The inner wall of the suction box is fixedly provided with a horizontal plate extending into the opening two.

[0013] Preferably, positioning strip one, positioning strip two and positioning strip three are fixedly installed on the inner wall of the frame, positioning strip one is located inside the annular filter and is slidingly connected to the inner walls on both sides of the annular filter, positioning strip two and positioning strip three are distributed on both sides of the annular filter and are slidingly connected to the two sides of the annular filter respectively.

[0014] Preferably, a switch cabinet body and a control transformer body are fixedly installed in the transformer chamber body, and the control transformer body is close to the air intake louver.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention can filter the cold air entering the transformer chamber body through the annular filter. Then, during the rotation of the annular filter, part of the hot air discharged through the exhaust hood can back-blow, clean, and heat the annular filter from the inside out. The heating can accelerate the drying of the flying insects on the annular filter. After that, the dried flying insects on the annular filter can be easily scraped off by the scraping and suction mechanism.

[0017] 2. The scraping and suction mechanism can also use a portion of the cold air flowing through the dust removal component into the transformer chamber body to cool down the heated part of the annular filter, ensuring that the cold air entering the transformer chamber body will not come into contact with the higher temperature part of the annular filter, ensuring that the air entering the transformer chamber body through the dust removal component and the air intake louvers is always cold air. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view structural diagram of a low-voltage chamber of a Chinese-style box-type transformer with low-temperature rise and three-dimensional heat dissipation for smart grids proposed by the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the air intake louvers and dust removal components in the low-voltage chamber of a Chinese-style box-type transformer with low-temperature rise and three-dimensional heat dissipation for smart grids proposed by the present invention. Figure 1 ;

[0020] Figure 3 This is a schematic diagram of the structure of the air intake louvers and dust removal components in the low-voltage chamber of a Chinese-style box-type transformer with low-temperature rise and three-dimensional heat dissipation for smart grids proposed by the present invention. Figure 2 ;

[0021] Figure 4 This is a side cross-sectional view of the air intake louvers and dust removal components in the low-voltage chamber of a Chinese-style box-type transformer with low-temperature rise and three-dimensional heat dissipation for smart grids proposed by the present invention;

[0022] Figure 5 for Figure 4 Schematic diagram of the enlarged structure of part A;

[0023] Figure 6 for Figure 4 Schematic diagram of the enlarged structure of part B;

[0024] Figure 7 This is a schematic diagram of the structure of a scraping and suction mechanism in a low-voltage chamber of a Chinese-style box-type transformer with low-temperature rise and three-dimensional heat dissipation for smart grids proposed by the present invention;

[0025] Figure 8 This is a cross-sectional view of a dust removal assembly in a low-voltage chamber of a Chinese-style box-type transformer with low-temperature rise and three-dimensional heat dissipation for smart grids proposed by the present invention;

[0026] Figure 9 This is a schematic diagram of the high-temperature gas convection direction in the low-voltage chamber of a Chinese-style box-type transformer with low-temperature rise and three-dimensional heat dissipation for smart grids proposed by the present invention.

[0027] In the figure: 1. Transformer chamber body; 2. Top cover; 3. Switchgear cabinet body; 4. Control transformer body; 5. Exhaust hood; 51. Air outlet; 6. Air inlet louver; 7. Dust removal assembly; 71. Frame; 711. Rectangular opening; 712. Vertical plate 1; 713. Reducer motor; 714. Vertical plate 2; 715. Positioning strip 1; 716. Positioning strip 2; 717. Positioning strip 3; 72. Annular filter; 73. Driving roller; 731. Conical ejector rod; 74. Driven roller 1; 741. Cooling chamber; 75. Guide plate; 76. Rectangular box; 761. Jet hole; 77. Sweeping and suction mechanism; 771. Suction box; 772. Opening 1; 773. Scraper; 774. Horizontal plate; 775. Opening 2; 776. Opening 3; 78. Driven roller 2; 79. Conduit; 791. Gas hood. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Please refer to Figures 1-9 The present invention provides a technical solution: a Chinese-style box-type transformer low-voltage chamber with low-temperature rise and three-dimensional heat dissipation for smart grid, comprising a transformer chamber main body 1 and a top cover 2 fixed on the top of the transformer chamber main body 1, an exhaust hood 5 is fixedly installed through the top cover 2, an air intake louver 6 is fixedly installed through the side wall of the transformer chamber main body 1, and a dust removal component 7 is fixedly installed on the side of the air intake louver 6 away from the transformer chamber main body 1, and the dust removal component 7 includes a frame 71, and an annular filter screen 72 is rotatably installed on the frame 71. The annular filter screen 72 is used to filter the cold air entering the transformer chamber main body 1. During the rotation of the annular filter screen 72, the exhaust hood 5 uses part of the hot air discharged from the transformer chamber main body 1 to backblow and heat a part of the annular filter screen 72, and then scrapes and cleans the heated and dried part of the annular filter screen 72, and finally uses part of the cold air to be entered into the transformer chamber main body 1 to cool the scraped part of the annular filter screen 72.

[0030] Furthermore, an exhaust fan is provided in the exhaust hood 5, and the air intake louver 6 is driven by a motor. The exhaust fan in the exhaust hood 5 and the motor on the air intake louver 6 are opened and closed synchronously. The annular filter 72 is made of metal (such as stainless steel) and has good thermal conductivity.

[0031] Two rectangular openings 711 are provided on the frame 71, and the annular filter screen 72 passes through the two rectangular openings 711 and is slidingly connected to the inner wall of the rectangular opening 711. Two vertical plates 712 are fixedly installed on the top of the frame 71, and two driving rollers 73 are rotatably installed between the two vertical plates 712. The two driving rollers 73 are located inside the annular filter screen 72 and are meshed with the annular filter screen 72. Two vertical plates 714 are fixedly installed on the bottom of the frame 71, and a driven roller 78 is rotatably installed between the two vertical plates 714. The driven roller 78 is located inside the annular filter screen 72 and is rollingly connected to the annular filter screen 72.

[0032] A reduction motor 713 is fixedly mounted on the vertical plate 712 , and the output shaft of the reduction motor 713 is fixedly connected to the end of the corresponding driving roller 73 . A plurality of conical top rods 731 are fixedly mounted on the side of the driving roller 73 , and the conical top rods 731 are adapted to the filter holes on the annular filter screen 72 .

[0033] Furthermore, the conical push rod 731 on the side of the driving roller 73 is used to insert into the filter holes on the annular filter 72, so that the annular filter 72 can be driven to rotate synchronously during the rotation of the driving roller 73, and when the conical push rod 731 is inserted into the filter holes of the annular filter 72, foreign matter blocked in the filter holes can be pushed and cleared.

[0034] A rectangular box 76 is fixedly installed on the top of the frame 71. The rectangular box 76 is located below the two conical top rods 731. The rectangular box 76 is inside the annular filter 72. Both sides of the rectangular box 76 are slidably connected to the inner wall of the annular filter 72. A plurality of air jet holes 761 are provided on the inner walls of both sides of the rectangular box 76 at equal intervals. A duct 79 is fixedly installed on one side of the rectangular box 76. An air collecting hood 791 is fixedly installed on the end of the duct 79 away from the rectangular box 76. A plurality of air outlets 51 are provided on the side wall of the exhaust hood 5. The air collecting hood 791 is fixedly connected to the side of the air outlet 51 and is connected to one of the air outlets 51.

[0035] A scraping and suction mechanism 77 is fixedly installed on the top of the frame 71, and a driven roller 74 is rotatably installed between the inner walls on both sides of the frame 71. The driven roller 74 is located on the outside of the annular filter screen 72 and is rollingly connected to the annular filter screen 72. A guide plate 75 is fixedly installed between the top inner walls of the frame 71. The driven roller 74 is located between the annular filter screen 72 and the guide plate 75. A cooling chamber 741 is formed between the annular filter screen 72 and the guide plate 75, and the scraping and suction mechanism 77 is connected to the cooling chamber 741.

[0036] The scraping and suction mechanism 77 includes a suction box 771, which passes through the frame 71 and is fixedly connected to the frame 71. An opening 1 772 is provided on the side of the suction box 771 close to the annular filter screen 72. A scraper 773 is fixedly installed on the bottom inner wall of the opening 1 772. The scraper 773 is slidably connected to the outer side surface of the annular filter screen 72. An opening 3 776 is provided at the bottom of the suction box 771, which is connected to the cooling chamber 741. The suction box 771 is also provided with an opening 2 775 that is connected to the opening 1 772 and the opening 3 776. A horizontal plate 774 extending into the opening 2 775 is fixedly installed on the inner wall of the suction box 771.

[0037] Positioning bar 1 715, positioning bar 2 716 and positioning bar 3 717 are fixedly installed on the inner wall of the frame 71. Positioning bar 1 715 is located inside the annular filter screen 72 and is slidably connected to the inner walls on both sides of the annular filter screen 72. Positioning bar 2 716 and positioning bar 3 717 are distributed on both sides of the annular filter screen 72 and are slidably connected to the two sides of the annular filter screen 72 respectively.

[0038] Furthermore, the two sets of positioning bars 1 715 , 2 716 and 3 717 can limit the position of the annular filter screen 72 during the rotation process, thereby preventing the annular filter screen 72 from jumping during the rotation process.

[0039] A switch cabinet body 3 and a control transformer body 4 are fixedly installed in the transformer chamber body 1 , and the control transformer body 4 is close to the air intake louver 6 .

[0040] In this embodiment, when the exhaust hood 5 is activated, the air intake louvers 6 are opened synchronously with the exhaust hood 5. The external cold air is filtered by the annular filter 72 and then enters the interior of the transformer chamber body 1 through the opened air intake louvers 6. The cold air cools the control transformer body 4 and the switch cabinet body 3 and then turns into hot air. The hot air is then discharged through the multiple air outlets 51.

[0041] Part of the hot air enters the air collecting cover 791 from one of the air outlets 51. After entering the air collecting cover 791, the hot air passes through the conduit 79 into the rectangular box 76 and is discharged through the air injection holes 761 on both sides.

[0042] When the exhaust hood 5 rotates, the reduction motor 713 is turned on synchronously, and the reduction motor 713 drives the driving roller 73 to rotate and drives the annular filter 72 to rotate. The rotation direction of the annular filter 72 is as follows: Figure 4-Figure 6 As shown;

[0043] The rotation direction of the annular filter screen 72 is as follows: Figure 4-Figure 6As shown, the hot air discharged from the multiple air jet holes 761 on the left side can back-blow, dredge and heat the annular filter 72, so that the dust and flying insects clogged in the filter holes of the annular filter 72 will be blown out, and the flying insects attached to the outer surface of the annular filter 72 will be heated and dried;

[0044] like Figure 5 and Figure 7 As shown, when the rotating annular filter 72 passes through the scraper 773, the dust and dried insect corpses on the outer surface of the annular filter 72 will be scraped by the scraper 773 and fall on the horizontal plate 774. The hot air ejected from the multiple jet holes 761 on the left side of the rectangular box 76 passes through the filter holes on the annular filter 72 and can blow the dust and dried insect corpses falling on the horizontal plate 774 into the second opening 775 and be discharged through the second opening 775. When hot air flows from left to right in the second opening 775, the bottom of the horizontal plate 774 will be in a negative pressure state. At this time, the external cold air will pass through the annular filter 72 and enter the cooling chamber 741 to cool the part of the annular filter 72 scraped by the scraper 773, and then the hot air enters the second opening 775 through the third opening 776 and is discharged, thereby ensuring that the cold air entering the transformer chamber main body 1 will not come into contact with the part with higher temperature of the annular filter 72.

[0045] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A low-voltage box transformer chamber with low-temperature rise and three-dimensional heat dissipation for smart grid, comprising a transformer chamber body (1) and a top cover (2) fixed on the top of the transformer chamber body (1), characterized in that: An exhaust hood (5) is fixedly installed through the top cover (2), and an air intake louver (6) is fixedly installed through the side wall of the transformer chamber body (1). A dust removal component (7) is fixedly installed on the side of the air intake louver (6) away from the transformer chamber body (1). The dust removal component (7) includes a frame (71), and an annular filter (72) is rotatably installed on the frame (71). The annular filter (72) is used to filter the cold air entering the transformer chamber body (1). During the rotation of the annular filter (72), the exhaust hood (5) back-blows and heats a part of the annular filter (72) through part of the hot air discharged from the transformer chamber body (1), and then scrapes and cleans the heated and dried part of the annular filter (72), and finally uses part of the cold air to enter the transformer chamber body (1) to cool the scraped part of the annular filter (72).

2. The low-voltage room with low-temperature rise and three-dimensional heat dissipation for smart grids according to claim 1 is characterized by: The frame (71) is provided with two rectangular openings (711), the annular filter (72) passes through the two rectangular openings (711) and is slidably connected to the inner wall of the rectangular opening (711), two vertical plates (712) are fixedly installed on the top of the frame (71), two driving rollers (73) are rotatably installed between the two vertical plates (712), the two driving rollers (73) are located inside the annular filter (72) and are meshed with the annular filter (72), two vertical plates (714) are fixedly installed on the bottom of the frame (71), a driven roller (78) is rotatably installed between the two vertical plates (714), the driven roller (78) is located inside the annular filter (72) and is rollingly connected to the annular filter (72).

3. The low-voltage room with low-temperature rise and three-dimensional heat dissipation for smart grids according to claim 2, characterized in that: A reduction motor (713) is fixedly mounted on the vertical plate (712), and an output shaft of the reduction motor (713) is fixedly connected to the end of the corresponding driving roller (73). A plurality of conical top rods (731) are fixedly mounted on the side of the driving roller (73), and the conical top rods (731) are adapted to the filter holes on the annular filter screen (72).

4. The low-voltage room with low-temperature rise and three-dimensional heat dissipation for smart grids according to claim 2, characterized in that: A rectangular box (76) is fixedly installed on the top of the frame (71), and the rectangular box (76) is located below the two conical top rods (731). The rectangular box (76) is inside the annular filter (72). Both sides of the rectangular box (76) are slidably connected to the inner wall of the annular filter (72). A plurality of air injection holes (761) distributed at equal intervals are provided on the inner walls of both sides of the rectangular box (76). A duct (79) is fixedly installed through one side of the rectangular box (76), and an air collecting hood (791) is fixedly installed at one end of the duct (79) away from the rectangular box (76). A plurality of air outlets (51) are provided on the side wall of the exhaust hood (5), and the air collecting hood (791) is fixedly connected to the side of the air outlet (51) and communicated with one of the air outlets (51).

5. The low-voltage room with low-temperature rise and three-dimensional heat dissipation for smart grids according to claim 1 is characterized by: A scraping and suction mechanism (77) is fixedly installed on the top of the frame (71), and a driven roller (74) is rotatably installed between the inner walls on both sides of the frame (71). The driven roller (74) is located outside the annular filter (72) and is rollingly connected to the annular filter (72). A guide plate (75) is fixedly installed between the inner walls of the top of the frame (71), and the driven roller (74) is located between the annular filter (72) and the guide plate (75). A cooling chamber (741) is formed between the annular filter (72) and the guide plate (75), and the scraping and suction mechanism (77) is connected to the cooling chamber (741).

6. The low-voltage room with low-temperature rise and three-dimensional heat dissipation for smart grids according to claim 5, characterized in that: The scraping and suction mechanism (77) includes a suction box (771), the suction box (771) passes through the frame (71) and is fixedly connected to the frame (71), the suction box (771) is provided with an opening (772) on one side close to the annular filter (72), a scraper (773) is fixedly installed on the bottom inner wall of the opening (772), the scraper (773) is slidably connected to the outer side of the annular filter (72), the bottom of the suction box (771) is provided with an opening (776) connected to the cooling chamber (741), the suction box (771) is further provided with an opening (775) connected to the opening (772) and the opening (776), and the inner wall of the suction box (771) is fixedly provided with a horizontal plate (774) extending into the opening (775).

7. The low-voltage room with low-temperature rise and three-dimensional heat dissipation for smart grids according to claim 1, characterized in that: Positioning strip 1 (715), positioning strip 2 (716) and positioning strip 3 (717) are fixedly mounted on the inner wall of the frame (71), wherein positioning strip 1 (715) is located inside the annular filter (72) and is slidably connected to the inner walls on both sides of the annular filter (72), and positioning strip 2 (716) and positioning strip 3 (717) are distributed on both sides of the annular filter (72) and are slidably connected to the two sides of the annular filter (72).

8. The low-voltage room with low-temperature rise and three-dimensional heat dissipation for smart grids according to claim 1 is characterized by: A switch cabinet body (3) and a control transformer body (4) are fixedly installed in the transformer chamber body (1), and the control transformer body (4) is close to the air intake louver (6).

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