A low-temperature-rise three-dimensional heat dissipation Chinese-style box transformer substation low-voltage chamber for smart grid

Abstract

The application belongs to the technical field of power grid electrical equipment, and particularly relates to a low-temperature-rise three-dimensional heat dissipation Huashi box transformer substation low-voltage chamber for smart grids, which comprises a transformer chamber main body and a top cover fixed on the top of the transformer chamber main body, an air extraction cover is fixedly installed on the top cover in a penetrating mode, air inlet louvers are fixedly installed on the side wall of the transformer chamber main body in a penetrating mode, and a dust removal assembly is fixedly installed on the side of the air inlet louvers away from the transformer chamber main body. The dust removal assembly comprises a frame, and an annular filter screen is rotatably installed on the frame. The cold air entering the transformer chamber main body can be filtered through the annular filter screen. During the rotation of the annular filter screen, the hot air discharged through the air extraction cover can blow, dredge and heat the annular filter screen from the inside to the outside. The flying insects on the annular filter screen can be dried through heating. The dried flying insects on the annular filter screen can be easily scraped off through the scraping and sucking mechanism.

Description

Technical Field

[0001] This invention relates to the field of power grid electrical equipment technology, and in particular to a low-voltage compartment of a Chinese-style prefabricated transformer substation with low-temperature rise and three-dimensional heat dissipation for smart grids. Background Technology

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

[0003] Excessive temperature rise: Traditional low-pressure chambers rely on natural convection or forced air cooling for heat dissipation, which has low heat dissipation efficiency. Especially in high-temperature environments, this can easily lead to shortened lifespan or even failure of components inside the cabinet (such as circuit breakers and capacitors) due to excessive temperature rise.

[0004] Dust accumulation: Existing heat dissipation designs require external air intake to achieve 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 aggravates the temperature rise (dust hinders heat dissipation) but may also cause safety hazards such as discharge and short circuit.

[0005] In existing technologies, a filter screen is added to the air inlet of the low-pressure chamber to filter dust in the air. However, in environments with many flying insects, the existing air inlet filter screen cleaning method easily crushes the flying insects, causing their body fluids to mix with dust and stick to the filter screen, which easily causes the filter screen pores to become clogged. Moreover, subsequent cleaning is also very troublesome. Therefore, a low-temperature rise three-dimensional heat dissipation Hua-style box-type transformer low-pressure chamber for smart grids is proposed. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, this invention proposes a low-voltage room for smart grid transformers with low-temperature rise and three-dimensional heat dissipation.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a low-voltage chamber of a smart grid transformer substation with low-temperature rise and three-dimensional heat dissipation, comprising a transformer chamber body and a top cover fixed to the top of the transformer chamber body. A ventilation hood is fixedly installed through the top cover. An air intake louver is fixedly installed through the side wall of the transformer chamber body. A dust removal component is fixedly installed on the side of the air intake louver away from the transformer chamber body. The dust removal component includes a frame, on which an annular filter is rotatably installed. The annular filter is used to filter the cold air entering the transformer chamber body. During the rotation of the annular filter, the ventilation hood back-blown and heated a portion of the annular filter using some of the hot air discharged from the transformer chamber body. Then, the heated and dried portion of the annular filter is scraped and cleaned. Finally, some of the cold air to be entered into the transformer chamber body is used to cool the scraped portion of the annular filter.

[0008] Preferably, the frame has two rectangular openings, the annular filter screen passes through the two rectangular openings and is slidably connected to the inner wall of the rectangular openings, two upright plates are fixedly installed on the top of the frame, two drive rollers are rotatably installed between the two upright plates, the two drive rollers are inside the annular filter screen and are engaged with the annular filter screen, and two upright plates are fixedly installed on the bottom of the frame, a driven roller is rotatably installed between the two upright plates, the driven roller is inside the annular filter screen and is tumbledly connected to the annular filter screen.

[0009] Preferably, a geared motor is fixedly installed on the upright plate, the output shaft of the geared motor is fixedly connected to the end of the corresponding drive roller, and multiple conical top rods are fixedly installed on the side of the drive roller, the conical top rods being adapted to the filter holes on the annular filter screen.

[0010] Preferably, a rectangular box is fixedly installed on the top of the frame. The rectangular box is located below two conical top rods and is inside the annular filter screen. Both sides of the rectangular box are slidably connected to the inner wall of the annular filter screen. Multiple air jet holes are evenly distributed on both sides of the inner wall of the rectangular box. A duct is fixedly installed through one side of the rectangular box. An air-gathering hood is fixedly installed at the end of the duct away from the rectangular box. Multiple air outlets are opened on the side wall of the exhaust hood. The air-gathering hood is fixedly connected to the side of the air outlet and communicates with one of the air outlets.

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

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

[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 slidably 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 slidably connected to both sides of the annular filter, respectively.

[0014] Preferably, a switch cabinet body and a control transformer body are fixedly installed inside the transformer chamber body, with the control transformer body located near the air intake louvers.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The present invention can filter the cold air entering the transformer chamber through the annular filter screen. Then, during the rotation of the annular filter screen, some of the hot air discharged through the exhaust hood can back-blown, clean and heat the annular filter screen from the inside to the outside. Heating can accelerate the drying of flying insects on the annular filter screen. Then, the dried flying insects on the annular filter screen 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 to cool down the heated part of the annular filter, ensuring that the cold air entering the transformer chamber does not come into contact with the hotter part of the annular filter, and ensuring that the air entering the transformer chamber through the dust removal component and the air intake louvers is always cold air. Attached Figure Description

[0018] Figure 1 This is a front view schematic diagram of the low-voltage compartment of a Hua-style prefabricated substation with low-temperature rise three-dimensional heat dissipation for smart grids proposed in this invention.

[0019] Figure 2 This invention presents a schematic diagram of the air intake louvers and dust removal components in the low-voltage compartment of a Hua-style prefabricated substation for low-temperature rise three-dimensional heat dissipation in smart grid applications. Figure 1 ;

[0020] Figure 3 This invention presents a schematic diagram of the air intake louvers and dust removal components in the low-voltage compartment of a Hua-style prefabricated substation for low-temperature rise three-dimensional heat dissipation in smart grid applications. Figure 2 ;

[0021] Figure 4 This is a side sectional view of the air intake louvers and dust removal components in the low-voltage compartment of a Hua-style prefabricated substation for low-temperature rise three-dimensional heat dissipation in smart grids, as proposed in this invention.

[0022] Figure 5 for Figure 4 A magnified structural diagram of part A in the middle;

[0023] Figure 6 for Figure 4 A magnified structural diagram of part B in the middle section;

[0024] Figure 7 This is a schematic diagram of the scraping and suction mechanism in the low-voltage chamber of a Chinese-style prefabricated substation for low-temperature rise three-dimensional heat dissipation in smart grids, as proposed in this invention.

[0025] Figure 8 This is a cross-sectional view of a dust removal component in the low-voltage compartment of a Chinese-style prefabricated substation for low-temperature rise three-dimensional heat dissipation in smart grids, as proposed in this 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 prefabricated substation with low-temperature rise three-dimensional heat dissipation for smart grids, as proposed in this invention.

[0027] In the diagram: 1. Transformer chamber main body; 2. Top cover; 3. Switch cabinet main body; 4. Control transformer main body; 5. Exhaust hood; 51. Air outlet; 6. Air inlet louver; 7. Dust removal assembly; 71. Frame; 711. Rectangular opening; 712. Vertical plate one; 713. Gear motor; 714. Vertical plate two; 715. Positioning strip one; 716. Positioning strip two; 717. Positioning strip three; 72. Annular filter screen; 73. Drive roller; 731. Conical top rod; 74. Driven roller one; 741. Cooling chamber; 75. Guide plate; 76. Rectangular box; 761. Air jet hole; 77. Scraping and suction mechanism; 771. Suction box; 772. Opening one; 773. Scraper; 774. Horizontal plate; 775. Opening two; 776. Opening three; 78. Driven roller two; 79. Guide tube; 791. Air collection hood. Detailed Implementation

[0028] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please refer to Figures 1-9 This invention provides a technical solution: a low-voltage chamber for a smart grid with low-temperature rise and three-dimensional heat dissipation in a Chinese-style box-type transformer substation, comprising a transformer chamber body 1 and a top cover 2 fixed to the top of the transformer chamber body 1. A ventilation hood 5 is fixedly installed through the top cover 2. An air inlet 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 inlet louver 6 away from the transformer chamber body 1. The dust removal component 7 includes a frame 71, on which an annular filter 72 is rotatably installed. 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 ventilation hood 5 uses some of the hot air discharged from the transformer chamber body 1 to back-blow and heat a portion of the annular filter 72. Then, the heated and dried portion of the annular filter 72 is scraped and cleaned. Finally, some of the cold air to be entered into the transformer chamber body 1 is used to cool the scraped portion of the annular filter 72.

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

[0031] The frame 71 has 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 openings 711. Two upright plates 712 are fixedly installed on the top of the frame 71. Two drive rollers 73 are rotatably installed between the two upright plates 712. The two drive rollers 73 are inside the annular filter 72 and are engaged with the annular filter 72. Two upright plates 714 are fixedly installed on the bottom of the frame 71. A driven roller 78 is rotatably installed between the two upright plates 714. The driven roller 78 is inside the annular filter 72 and is tumbledly connected to the annular filter 72.

[0032] A geared motor 713 is fixedly installed on the upright plate 712. The output shaft of the geared motor 713 is fixedly connected to the end of the corresponding drive roller 73. Multiple conical push rods 731 are fixedly installed on the side of the drive roller 73. The conical push rods 731 are adapted to the filter holes on the annular filter screen 72.

[0033] Furthermore, the tapered push rod 731 on the side of the drive roller 73 is used to insert into the filter holes on the annular filter screen 72, so that the annular filter screen 72 can rotate synchronously during the rotation of the drive roller 73, and the tapered push rod 731 can push and clear the foreign objects blocking the filter holes during the insertion of the annular filter screen 72.

[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 and is inside the annular filter screen 72. Both sides of the rectangular box 76 are slidably connected to the inner wall of the annular filter screen 72. Multiple air jet holes 761 are evenly distributed on both sides of the inner wall of the rectangular box 76. A duct 79 is fixedly installed through one side of the rectangular box 76. A gas-concentrating hood 791 is fixedly installed at the end of the duct 79 away from the rectangular box 76. Multiple air outlets 51 are opened on the side wall of the exhaust hood 5. The gas-concentrating hood 791 is fixedly connected to the side of the air outlets 51 and communicates with one of the air outlets 51.

[0035] A scraping and suction mechanism 77 is fixedly installed through the top of the frame 71. 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 screen 72 and is tumbledly connected to the annular filter screen 72. A guide plate 75 is fixedly installed between the inner walls at the top 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. 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. The suction box 771 has an opening 772 on the side near the annular filter screen 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 screen 72. The bottom of the suction box 771 has an opening 776 that communicates with the cooling chamber 741. The suction box 771 also has an opening 775 that communicates with the opening 772 and the opening 776. A horizontal plate 774 extending into the opening 775 is fixedly installed on the inner wall of the suction box 771.

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

[0038] Furthermore, the two sets of positioning strips 715, 716 and 717 can limit the rotation of the annular filter 72, preventing it from jumping during rotation.

[0039] The main body of the transformer room 1 is fixedly installed with the main body of the switch cabinet 3 and the main body of the control transformer 4. The main body of the control transformer 4 is close to the air inlet louver 6.

[0040] In this embodiment: When in use, the exhaust hood 5 is activated and the air intake louvers 6 open synchronously with the exhaust hood 5. After the external cold air is filtered by the annular filter 72, it enters the transformer chamber body 1 through the opened air intake louvers 6. The cold air cools down the control transformer body 4 and the switch cabinet body 3 and then becomes hot air. The hot air is then discharged through multiple air outlets 51.

[0041] Some hot air enters the gas-gathering hood 791 from one of the air outlets 51. After entering the gas-gathering hood 791, the hot air enters the rectangular box 76 through the duct 79 and is then discharged through the jet holes 761 on both sides.

[0042] As the exhaust hood 5 rotates, the geared motor 713 simultaneously starts, driving the drive roller 73 to rotate and thus rotating the annular filter screen 72. The rotation direction of the annular filter screen 72 is as follows: Figures 4-6 As shown;

[0043] The rotation direction of the annular filter 72 is as follows Figures 4-6As shown, the hot air discharged from the multiple jet holes 761 on the left side can backflush and heat the annular filter 72, and the dust and flying insects blocked in the filter holes of the annular filter 72 will be blown out, while 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 the scraper 773, the dust and dried insect carcasses on the outer surface of the annular filter 72 are scraped off by the scraper 773 and fall onto 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 blows the dust and dried insect carcasses that fall onto the horizontal plate 774 into the second opening 775 and out through the second opening 775. When hot air flows from left to right in the second opening 775, the area below the horizontal plate 774 will be under negative pressure. At this time, 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 that has been scraped by the scraper 773. Then the hot air enters the second opening 775 through the third opening 776 and is discharged, thus ensuring that the cold air entering the transformer chamber body 1 will not come into contact with the hotter part of the annular filter 72.

[0045] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A low-voltage compartment of a transformer substation with low-temperature rise and three-dimensional heat dissipation for smart grids, comprising a transformer compartment body (1) and a top cover (2) fixed to the top of the transformer compartment body (1), characterized in that: A ventilation hood (5) is fixedly installed through the top cover (2), and an air inlet louver (6) is fixedly installed through the side wall of the transformer chamber body (1). A dust removal assembly (7) is fixedly installed on the side of the air inlet louver (6) away from the transformer chamber body (1). The dust removal assembly (7) includes a frame (71). 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 ventilation hood (5) back-blown and heated a portion of the annular filter (72) through a portion of the hot air discharged from the transformer chamber body (1). Then, the heated and dried portion of the annular filter (72) is scraped and cleaned. Finally, a portion of the cold air to be entered into the transformer chamber body (1) is used to cool the scraped portion of the annular filter (72). The frame (71) has two rectangular openings (711), and the annular filter (72) passes through the two rectangular openings (711) and is slidably connected to the inner wall of the rectangular openings (711). The top of the frame (71) is fixedly installed with two upright plates (712), and two drive rollers (73) are rotatably installed between the two upright plates (712). The two drive rollers (73) are inside the annular filter (72) and are engaged with the annular filter (72). The bottom of the frame (71) is fixedly installed with two upright plates (714), and a driven roller (78) is rotatably installed between the two upright plates (714). The driven roller (78) is inside the annular filter (72) and is tumbledly connected to the annular filter (72). A geared motor (713) is fixedly installed on the upright plate (712). The output shaft of the geared motor (713) is fixedly connected to the end of the corresponding drive roller (73). Multiple conical top rods (731) are fixedly installed on the side of the drive roller (73). The conical top rods (731) are adapted to the filter holes on the annular filter screen (72).

2. The low-voltage compartment of a prefabricated transformer substation with low-temperature rise three-dimensional heat dissipation for smart grids according to claim 1, characterized in that: A rectangular box (76) is fixedly installed on the top of the frame (71). The rectangular box (76) is located below two conical top rods (731). The rectangular box (76) is inside the annular filter screen (72). Both sides of the rectangular box (76) are slidably connected to the inner wall of the annular filter screen (72). Multiple air jet holes (761) are evenly distributed on both sides of the inner wall of the rectangular box (76). A duct (79) is fixedly installed through one side of the rectangular box (76). A gas-gathering hood (791) is fixedly installed at the end of the duct (79) away from the rectangular box (76). Multiple air outlets (51) are opened on the side wall of the exhaust hood (5). The gas-gathering hood (791) is fixedly connected to the side of the air outlet (51) and communicates with one of the air outlets (51).

3. The low-voltage compartment of a prefabricated transformer substation with low-temperature rise three-dimensional heat dissipation for smart grids according to claim 1, characterized in that: A scraping and suction mechanism (77) is fixedly installed through the top of the frame (71). 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 tumbledly connected to the annular filter (72). A guide plate (75) is fixedly installed between the inner walls at the top of the frame (71). 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). The scraping and suction mechanism (77) is connected to the cooling chamber (741).

4. The low-voltage compartment of a Hua-style prefabricated substation with low-temperature rise three-dimensional heat dissipation for smart grids according to claim 3, characterized in that: 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). The suction box (771) has an opening (772) on one side near 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) that communicates with the cooling chamber (741). The suction box (771) is also provided with an opening (775) that communicates with the opening (772) and the opening (776). A horizontal plate (774) extending into the opening (775) is fixedly installed on the inner wall of the suction box (771).

5. The low-voltage compartment of a Hua-style prefabricated substation with low-temperature rise three-dimensional heat dissipation for smart grids according to claim 1, characterized in that: Positioning strip one (715), positioning strip two (716) and positioning strip three (717) are fixedly installed on the inner wall of the frame (71). Positioning strip one (715) is located inside the annular filter (72) and is slidably connected to the inner walls on both sides of the annular filter (72). Positioning strip two (716) and positioning strip three (717) are distributed on both sides of the annular filter (72) and are slidably connected to both sides of the annular filter (72) respectively.

6. The low-voltage compartment of a Hua-style prefabricated substation with low-temperature rise three-dimensional heat dissipation for smart grids according to claim 1, characterized in that: The main body of the transformer chamber (1) is fixedly installed with a switch cabinet body (3) and a control transformer body (4), and the control transformer body (4) is close to the air inlet louver (6).

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