An American box-type substation

Abstract

The present invention relates to the field of transformer substation equipment, specifically an American box-type transformer substation, including a high- and low-voltage cabinet and a transformer cabinet installed at the rear of the high- and low-voltage cabinet; the high- and low-voltage cabinet is equipped with a heat dissipation mechanism, and the heat dissipation mechanism includes an air intake mechanism installed at the bottom of the high- and low-voltage cabinet, a central air duct arranged in the middle of the high- and low-voltage cabinet inner cavity to divide the high- and low-voltage cabinet inner cavity into a high-pressure chamber and a low-pressure chamber, and an exhaust pipe connected to the upper end of the central air duct and installed on the top of the high- and low-voltage cabinet. The present invention divides the chamber by connecting the high-voltage cabinet and the low-voltage cabinet and arranging a central air duct in the middle thereof, and at the same time, by providing an exhaust pipe, an air flow dispersion cylinder equipped with an air jet pipe, a reciprocating mechanism driving the air flow dispersion cylinder to swing back and forth, and an air outlet and an air inlet opened at the upper and lower ends of the central air duct, so as to realize that the air flow is evenly distributed and flows in the high-pressure chamber and the low-pressure chamber, and is gathered in the central air duct to use the "chimney effect" to quickly discharge the air flow with heat.

Description

Technical Field

[0001] The invention relates to the field of transformer substation equipment, in particular to an American box-type transformer substation. Background Art

[0002] The American box-type substation has a compact structure and mostly uses a fully sealed oil tank and a fully insulated design. It generally adopts a herringbone structure. The high-voltage cabinet and the low-voltage cabinet are arranged on the front side, and the transformer is arranged on the back side. In daily use, heat is dissipated by opening heat dissipation shutters on the side walls of the high-voltage cabinet and the low-voltage cabinet. The heat dissipation efficiency of the natural air cooling method is limited.

[0003] When the temperature inside the high-voltage cabinet or the low-voltage cabinet is too high, it is easy to damage the electrical switch equipment, which is not conducive to the operation and maintenance of the American box-type substation under high temperature conditions. Summary of the invention

[0004] Based on the deficiencies in the prior art mentioned in the above background technology, the present invention provides an American box-type substation.

[0005] The present invention overcomes the above technical problems by adopting the following technical solutions, specifically:

[0006] An American box-type substation, comprising:

[0007] High and low voltage cabinets and transformer cabinets installed behind the high and low voltage cabinets;

[0008] The high and low voltage cabinets are equipped with a heat dissipation mechanism, which includes an air intake mechanism installed at the bottom of the high and low voltage cabinets, a central air duct arranged in the middle of the inner cavity of the high and low voltage cabinets to divide the inner cavity of the high and low voltage cabinets into a high pressure chamber and a low pressure chamber, and an exhaust pipe connected to the upper end of the central air duct and installed on the top of the high and low voltage cabinets; the lower part of the central air duct is provided with a lower air inlet connected to the inner cavity of the high and low voltage cabinets, and the upper part is provided with an upper air outlet connected to the inner cavity of the high and low voltage cabinets;

[0009] The air intake mechanism includes an air extraction pipe which is installed through the side walls of the high and low pressure cabinets and fixedly connected to a dustproof net at the outer end, an air flow dispersion cylinder which is installed in the high and low pressure cabinets and is rotatably connected to the air extraction pipe, an air injection pipe which is equidistantly installed on the air flow dispersion cylinder and is connected to the inner cavity of the air flow dispersion cylinder, a fan impeller which is installed in the air extraction pipe and is located inside the dustproof net, and a rotating shaft which is fixedly connected to the fan impeller and is connected to a driving mechanism after passing through the air flow dispersion cylinder.

[0010] The air flow dispersion cylinder is connected to a reciprocating drive mechanism that drives the air flow dispersion cylinder to rotate reciprocally. The reciprocating drive mechanism includes a semicircular gear ring installed at the lower part of the air flow dispersion cylinder, a rack plate meshed at the lower end of the semicircular gear ring and longitudinally slidably connected to the high and low pressure rails, a rectangular frame fixedly installed at the end of the rack plate and provided with a vertical slide groove, a traction rod that passes through the rectangular frame and is fixedly connected to an eccentric groove disk, and a transmission assembly connecting the drive mechanism and the eccentric groove disk.

[0011] Preferably, an impeller roller is installed in the central air duct, and the impeller roller is connected to a connecting shaft installed in the central air duct and connected to the rotating shaft through a transmission gear set.

[0012] Preferably, a drying mechanism is also provided in the exhaust pipe, the drying mechanism comprising a first air permeable plate installed on the inner side of the fan impeller, a second air permeable plate close to the air flow dispersion tube, and a water absorbent filled in a drying chamber formed by the first air permeable plate and the second air permeable plate.

[0013] Preferably, a brush plate fixedly connected to the rotating shaft and abutting against the surface of the dustproof net is installed on the outside of the exhaust pipe, and the exhaust pipe is provided with an annular cavity for the brush plate to rotate, and a dust exhaust port connected to the annular cavity is provided at the lower end of the annular cavity.

[0014] Preferably, a bottom equipment box is provided outside the airflow dispersion tube in the high and low pressure cabinet, which is nested at the bottom of the high and low pressure cabinet and has a mesh plate nested on the top, and the mesh plate is movably connected to the bottom equipment box.

[0015] Preferably, the driving mechanism includes a driving motor installed in the bottom equipment box, and the driving motor is connected to the rotating shaft through a transmission belt for transmission.

[0016] Preferably, the transmission assembly includes a transmission shaft whose outer end is fixedly connected to the eccentric groove disk and whose inner end is rotatably connected to the central air duct through a bearing seat, and a reduction gear set connecting the transmission shaft and the rotating shaft.

[0017] Preferably, an I-shaped guide rail fixedly connected to the bottom plates of the high and low voltage cabinets is embedded at the lower end of the rack plate.

[0018] Preferably, an impeller cavity for accommodating a fan impeller is formed between the dustproof net installed in the exhaust pipe and the first air permeable plate.

[0019] Preferably, a group of air intake mechanisms arranged in mirror symmetry are installed at the lower part of the high and low pressure cabinets, wherein the rotating shafts arranged in mirror symmetry are connected for transmission via connecting shafts.

[0020] After adopting the above structure, the present invention has the following advantages compared with the prior art:

[0021] The present invention divides the chamber by connecting the high-pressure cabinet and the low-pressure cabinet and arranging a central air duct in the middle thereof, and at the same time, by providing an exhaust pipe, an air flow dispersion cylinder equipped with an injection pipe, a reciprocating mechanism for driving the air flow dispersion cylinder to swing back and forth, and air outlets and air inlets provided at the upper and lower ends of the central air duct, the air flow is evenly distributed in the high-pressure chamber and the low-pressure chamber, and is gathered into the central air duct to utilize the "chimney effect" to quickly discharge the hot air flow.

[0022] The present invention dries the airflow entering the high and low pressure cabinets by filling a water absorbent in a drying cavity surrounded by a first air permeable plate and a second air permeable plate in an air extraction pipe, thereby preventing moisture from entering the cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of an American box-type substation.

[0024] Figure 2 This is a schematic diagram of the internal structure of high and low voltage cabinets in an American box-type substation.

[0025] Figure 3 This is a schematic diagram of the internal structure of the bottom equipment box in an American box-type substation.

[0026] Figure 4 This is a schematic diagram of the assembly structure of the exhaust pipe and air flow dispersion cylinder in an American box-type substation.

[0027] Figure 5 This is a schematic diagram of the internal structure of the exhaust pipe and air flow dispersion cylinder in an American box-type substation.

[0028] Figure 6 This is a schematic diagram of the rear perspective structure of the high and low voltage cabinets in an American box-type substation.

[0029] Figure 7 This is a structural diagram of the driving mechanism in an American box-type substation.

[0030] In the figure: 1, high and low voltage cabinet; 2, transformer cabinet; 3, exhaust pipe; 301, annular cavity; 302, dust outlet; 303, impeller cavity; 304, drying cavity; 4, exhaust pipe; 5, equipment installation plate; 6, support rod; 7, bottom equipment box; 8, mesh plate; 9, central air duct; 10, upper air outlet; 11, lower air inlet; 12, air flow dispersion cylinder; 13, jet pipe; 14, dust net; 15, the first A ventilation plate; 16, fan impeller; 17, second ventilation plate; 18, water absorbent; 19, rotating shaft; 20, brush plate; 21, transmission belt; 22, driving motor; 23, semicircular gear ring; 24, rack plate; 25, guide rail; 26, rectangular frame; 27, traction rod; 28, eccentric groove plate; 29, transmission shaft; 30, reduction gear set; 31, connecting shaft; 32, impeller roller; 33, mounting cylinder. DETAILED DESCRIPTION

[0031] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0032] See also Figures 1 to 7 In one embodiment of the present invention, an American box-type substation includes:

[0033] A high and low voltage cabinet 1 and a transformer cabinet 2 installed at the rear of the high and low voltage cabinet 1;

[0034] The high and low voltage cabinet 1 is equipped with a heat dissipation mechanism, which includes an air intake mechanism installed at the bottom of the high and low voltage cabinet 1, a central air duct 9 arranged in the middle of the inner cavity of the high and low voltage cabinet 1 to divide the inner cavity of the high and low voltage cabinet 1 into a high pressure chamber and a low pressure chamber, and an exhaust pipe 4 connected to the upper end of the central air duct 9 and installed on the top of the high and low voltage cabinet 1; the lower part of the central air duct 9 is provided with a lower air inlet 11 connected to the inner cavity of the high and low voltage cabinet 1, and the upper part is provided with an upper air outlet connected to the inner cavity of the high and low voltage cabinet 1;

[0035] The air intake mechanism includes an air extraction pipe 3 which is installed through the side wall of the high and low pressure cabinet 1 and fixedly connected to a dustproof net 14 at the outer end, an air flow dispersion tube 12 which is installed in the high and low pressure cabinet 1 and is rotatably connected to the air extraction pipe 3, an air injection pipe 13 which is equidistantly installed on the air flow dispersion tube 12 and is connected to the inner cavity of the air flow dispersion tube 12, a fan impeller 16 which is installed in the air extraction pipe 3 and is located inside the dustproof net 14, and a rotating shaft 19 which is fixedly connected to the fan impeller 16 and is connected to a driving mechanism after passing through the air flow dispersion tube 12;

[0036] The air flow dispersion cylinder 12 is connected to a reciprocating drive mechanism that drives the air flow dispersion cylinder 12 to rotate reciprocatingly, and the reciprocating drive mechanism includes a semicircular gear ring 23 installed at the lower part of the air flow dispersion cylinder 12, a rack plate 24 meshed at the lower end of the semicircular gear ring 23 and longitudinally slidably connected to the high and low pressure rails 1, a rectangular frame 26 fixedly installed at the end of the rack plate 24 and provided with a vertical slide groove, a traction rod 27 that passes through the rectangular frame 26 and is fixedly connected to an eccentric groove disk 28, and a transmission assembly connecting the drive mechanism and the eccentric groove disk 28.

[0037] Specifically, the driving mechanism drives the rotating shaft 19 to rotate, and the rotating shaft 19 drives the fan impeller 16 to rotate. The fan impeller 16 draws the external airflow into the airflow dispersion tube 12 through the dustproof net 14 at the front end of the exhaust pipe 3 and sprays it out from the jet pipe 13. At the same time, the driving mechanism drives the eccentric groove plate 28 to rotate through the transmission assembly, and the eccentric groove plate 28 drives the traction rod 27 to make a circular motion. The traction rod 27 drives the rack plate 24 to move back and forth longitudinally through the rectangular frame 26. The rack plate 24 drives the semicircular gear ring 23 to swing back and forth, and the semicircular gear ring 23 drives the airflow dispersion tube 12 to rotate back and forth. The airflow dispersion tube 12 drives the jet pipe 13 to swing back and forth, so that the airflow is evenly distributed in the chamber of the high and low pressure cabinet 1. As the airflow rises, the airflow takes away the heat on the equipment and enters the central air duct 9 through the upper air outlet 10 of the central air duct 9. Under the action of the "chimney effect", the airflow is discharged through the exhaust pipe 4, thereby achieving efficient heat dissipation.

[0038] It should be noted that in order to improve the effect of airflow in removing heat, the high and low voltage cabinet 1 is provided with an equipment installation plate 5 suspended in the middle of the high and low voltage cabinet 1 by a support rod 6, and various electrical equipment such as load switches and fuses are installed on the equipment installation plate 5.

[0039] In this embodiment, a bottom equipment box 7 is provided outside the air flow dispersion tube 12 in the high and low pressure cabinet 1 and is nested at the bottom of the high and low pressure cabinet 1 and has a mesh plate 8 nested on the top. The mesh plate 8 is movably connected to the bottom equipment box 7.

[0040] Specifically, the air intake mechanism is protected by providing a bottom equipment box 7 and a mesh plate 8 movably connected thereto, thereby preventing the air intake mechanism from being damaged during maintenance of the electrical equipment.

[0041] In this embodiment, the driving mechanism includes a driving motor 22 installed in the bottom equipment box 7 , and the driving motor 22 is connected to the rotating shaft 19 through a transmission belt 21 for transmission.

[0042] Specifically, the driving motor 22 drives the rotating shaft 19 to rotate through the transmission belt 21 , and the rotating shaft 19 drives the fan impeller 16 to rotate.

[0043] In this embodiment, the transmission assembly includes a transmission shaft 29 whose outer end is fixedly connected to the eccentric groove disk 28 and whose inner end is rotatably connected to the central air duct 9 through a bearing seat, and a reduction gear set 30 connecting the transmission shaft 29 and the rotating shaft 19; the transmission shaft 29 is fixedly connected to the eccentric groove disk 28.

[0044] Specifically, the rotating shaft 19 drives the transmission shaft 29 to rotate through the reduction gear set 30, and the transmission shaft 29 drives the eccentric groove disk 28 to rotate.

[0045] In this embodiment, an impeller cavity 303 for accommodating a fan impeller 16 is formed between the dustproof net 14 installed in the exhaust pipe 3 and the first air permeable plate 15 .

[0046] In this embodiment, an I-shaped guide rail 25 which is fixedly connected to the bottom plate of the high and low voltage cabinet 1 is embedded in the lower end of the rack plate 24 .

[0047] Specifically, the stability of the rack plate 24 during the longitudinal reciprocating movement is improved so that the rack plate 24 maintains contact with the semicircular gear ring 23 .

[0048] In another embodiment of the present invention, a group of air intake mechanisms arranged in mirror symmetry are installed at the lower part of the high and low voltage cabinets 1, wherein the mirror-symmetrical rotating shafts 19 are connected for transmission via a connecting shaft 31.

[0049] Specifically, by providing a group of air intake mechanisms that are arranged in mirror symmetry, the heat dissipation effect is improved.

[0050] In another embodiment of the present invention, an impeller roller 32 is installed in the central air duct 9, and the impeller roller 32 is connected to a connecting shaft 31 installed in the central air duct 9 and connected to the rotating shaft 19 through a transmission gear set. The impeller roller 32 is rotatably installed on a mounting cylinder 33 set in the central air duct 9, and the transmission gear set is nested in the mounting cylinder 33.

[0051] Specifically, an active impeller roller 32 is provided in the central air duct 9 to force the airflow in the central air duct 9 to move upward, thereby increasing the airflow velocity and the heat dissipation velocity.

[0052] In addition, it should be noted that a temperature sensor and a PLC controller are provided in the high and low voltage cabinet 1. When the temperature is too high, the drive motor 22 is started to realize automatic control, which is energy-saving and efficient.

[0053] In another embodiment of the present invention, a drying mechanism is further provided in the exhaust pipe 3, and the drying mechanism includes a first air permeable plate 15 installed on the inner side of the fan impeller 16, a second air permeable plate 17 close to the air flow dispersion tube 12, and a water absorbent 18 filled in a drying chamber 304 formed by the first air permeable plate 15 and the second air permeable plate 17.

[0054] Specifically, the gas entering the high and low voltage cabinet 1 is dried by a water absorber to prevent moisture from entering the high and low voltage cabinet 1 to corrode electrical equipment and cause a short circuit accident.

[0055] In another embodiment of the present invention, a brush plate 20 fixedly connected to the rotating shaft 19 and abutting against the surface of the dustproof net 14 is installed on the outer side of the exhaust pipe 3, and the exhaust pipe 3 is provided with an annular cavity 301 for the brush plate 20 to rotate, and the lower end of the annular cavity 301 is provided with a dust exhaust port 302 connected thereto.

[0056] Specifically, by providing the brush plate 20, the annular cavity 301 and the dust outlet 302, the dust screen 14 is cleaned by utilizing centrifugal force, thereby ensuring the permeability of the dust screen 14, avoiding the dust screen 14 from being blocked and reducing the speed of the incoming air flow, and ensuring the heat dissipation effect.

[0057] The above description is only for the best embodiment of the present invention, but it should not be understood as limiting the claims. The present invention is not limited to the above embodiments, and its specific structure is allowed to be changed. However, all changes made within the protection scope of the independent claims of the present invention are within the protection scope of the present invention.

Claims

1. An American box-type substation, characterized in that: include: A high and low voltage cabinet (1) and a transformer cabinet (2) installed at the rear of the high and low voltage cabinet (1); The high and low voltage cabinet (1) is provided with a heat dissipation mechanism, which comprises an air intake mechanism installed at the bottom of the high and low voltage cabinet (1), a central air duct (9) arranged at the middle of the inner cavity of the high and low voltage cabinet (1) to divide the inner cavity of the high and low voltage cabinet (1) into a high pressure chamber and a low pressure chamber, and an exhaust pipe (4) connected to the upper end of the central air duct (9) and installed at the top of the high and low voltage cabinet (1); the lower part of the central air duct (9) is provided with a lower air inlet (11) connected to the inner cavity of the high and low voltage cabinet (1), and the upper part is provided with an upper air outlet connected to the inner cavity of the high and low voltage cabinet (1); The air intake mechanism comprises an exhaust pipe (3) which is installed through the side wall of the high and low pressure cabinet (1) and has a dust screen (14) fixedly connected to the outer end, an air flow dispersion tube (12) installed in the high and low pressure cabinet (1) and rotatably connected to the exhaust pipe (3), an air injection tube (13) which is installed equidistantly on the air flow dispersion tube (12) and communicates with the inner cavity of the air flow dispersion tube (12), a fan impeller (16) installed in the exhaust pipe (3) and located inside the dust screen (14), and a rotating shaft (19) which is fixedly connected to the fan impeller (16) and is connected to a driving mechanism after passing through the air flow dispersion tube (12); The air flow dispersion cylinder (12) is connected to a reciprocating drive mechanism for driving the air flow dispersion cylinder (12) to reciprocate, the reciprocating drive mechanism comprising a semicircular gear ring (23) installed at the lower part of the air flow dispersion cylinder (12), a rack plate (24) meshed with the lower end of the semicircular gear ring (23) and connected to the high and low voltage cabinets (1) in a longitudinal sliding manner, a rectangular frame (26) fixedly installed at the end of the rack plate (24) and provided with a vertical slide groove, a traction rod (27) passing through the rectangular frame (26) and fixedly connected to the eccentric groove disk (28), and a transmission assembly connecting the drive mechanism and the eccentric groove disk (28); an impeller roller (32) is installed in the central air duct (9), and the impeller roller (32) is connected to a connecting shaft (31) installed in the central air duct (9) and connected to the rotating shaft (19) through a transmission gear set; the drive mechanism comprises a drive motor (22) installed in the bottom equipment box (7), and the drive motor (22) is connected to the rotating shaft (19) through a transmission belt (21) for transmission.

2. An American box-type substation according to claim 1, characterized in that: A drying mechanism is also provided in the exhaust pipe (3), the drying mechanism comprising a first air permeable plate (15) mounted on the inner side of the fan impeller (16), a second air permeable plate (17) close to the air flow dispersion tube (12), and a water absorbent (18) filled in a drying chamber (304) enclosed by the first air permeable plate (15) and the second air permeable plate (17).

3. An American box-type substation according to claim 1, characterized in that: A brush plate (20) fixedly connected to the rotating shaft (19) and abutting against the surface of the dustproof net (14) is installed on the outside of the air extraction pipe (3). The air extraction pipe (3) is provided with an annular cavity (301) for the brush plate (20) to rotate, and a dust exhaust port (302) communicating with the annular cavity (301) is provided at the lower end of the annular cavity (301).

4. The American box-type substation according to claim 1, characterized in that: A bottom equipment box (7) is provided inside the high and low voltage cabinet (1) and is located outside the air flow dispersion cylinder (12). The bottom equipment box (7) is nested and installed at the bottom of the high and low voltage cabinet (1) and has a mesh plate (8) nested on the top. The mesh plate (8) is movably connected to the bottom equipment box (7).

5. An American box-type substation according to claim 4, characterized in that: The transmission assembly comprises a transmission shaft (29) whose outer end is fixedly connected to the eccentric groove plate (28) and whose inner end is rotationally connected to the central air duct (9) via a bearing seat, and a reduction gear set (30) connecting the transmission shaft (29) and the rotating shaft (19).

6. The American box-type substation according to claim 1, characterized in that: An I-shaped guide rail (25) is embedded at the lower end of the rack plate (24) and is fixedly connected to the bottom plate of the high and low voltage cabinet (1).

7. An American box-type substation according to claim 3, characterized in that: An impeller cavity (303) for accommodating a fan impeller (16) is formed between the dustproof net (14) installed in the exhaust pipe (3) and the first air permeable plate (15).

8. An American box-type substation according to claim 2, characterized in that: A group of air intake mechanisms arranged in mirror-symmetrical arrangement are installed at the lower part of the high and low pressure cabinets (1), wherein the mirror-symmetrically arranged rotating shafts (19) are connected for transmission via a connecting shaft (31).

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