An integrated excitation system structure

Abstract

The present invention relates to an integrated excitation system structure, the innovation of which lies in: comprising a cabinet, a regulating and control unit, an excitation power unit, a demagnetization and protection device, a fan cover, and a fan; the interior of the cabinet is provided with a first chamber and a second chamber arranged in parallel; the demagnetization and protection device includes a demagnetization switch, a protection circuit, and a demagnetization resistor; the regulating and control unit, the protection circuit, and the demagnetization resistor are all arranged in the first chamber; the excitation power unit and the demagnetization switch are arranged in the second chamber; the cabinet is provided with a double-leaf cabinet door, and the cabinet door arranged at the second chamber of the cabinet has a heat dissipation air inlet; the fan cover is arranged at the top of the cabinet and above the second chamber, and the air intake of the fan cover is connected to the second chamber of the cabinet; the fan is installed in the fan cover. The present invention not only occupies a small space, but also has a high degree of integration and a compact structure; it is also easy to assemble, has a low production cost, and is very convenient to transport.

Description

Technical Field

[0001] The present invention relates to an excitation system structure, in particular to an integrated excitation system structure. Background Art

[0002] Existing excitation systems, including the regulation and control unit, excitation power unit, and demagnetization and protection devices, are each housed in a separate cabinet. Each cabinet measures 2260*800*1000. In practice, these cabinets must be combined for installation. After the individual cabinets are assembled, they are hoisted separately and connected together. The entire system occupies a floor space of 2260*2400*1000. This conventional excitation system not only occupies a large space but also has high production costs, is time-consuming to assemble, and is inconvenient to transport.

[0003] Currently, the market for excitation products for large units has shrunk significantly, while the market for small and medium-sized units has steadily grown, reaching a significant volume. In the cabinet sector, with the increasing trend toward integration, the number of components within cabinets is increasing, and their distribution is becoming increasingly dense. This has led to a growing demand for convenient installation and transport, as well as a compact footprint. Therefore, optimizing the structure of excitation panels to adapt to the market environment is imperative. Summary of the Invention

[0004] The purpose of the present invention is to provide an integrated excitation system structure which not only occupies a small space but also has a high degree of integration and a compact structure. It also has the advantages of easy assembly, low production cost and very convenient transportation.

[0005] In order to achieve the above object, the technical solution of the present invention is: an integrated excitation system structure, the innovation of which is: including a cabinet, a regulation and control unit, an excitation power unit, a demagnetization and protection device, a fan cover and a fan,

[0006] The cabinet is provided with a first chamber and a second chamber arranged in parallel. The demagnetization and protection device includes a demagnetization switch, a protection circuit and a demagnetization resistor. The adjustment and control unit, the protection circuit and the demagnetization resistor are all arranged in the first chamber, and the adjustment and control unit is located in the upper part of the first chamber, and the protection circuit and the demagnetization resistor are located in the lower part of the first chamber. The excitation power unit and the demagnetization switch are arranged in the second chamber, and the excitation power unit is located in the upper part of the second chamber, and the demagnetization switch is located in the lower part of the second chamber.

[0007] The control end of the regulation and control unit is electrically connected to the corresponding input end of the excitation power unit, the input end of the demagnetization switch and the protection circuit are electrically connected to the corresponding DC output end of the excitation power unit respectively, and the demagnetization resistor is electrically connected to the corresponding connection end of the demagnetization switch.

[0008] The cabinet body is provided with a double-leaf cabinet door, and the cabinet door provided at the second chamber of the cabinet body has a heat dissipation air inlet. The fan cover is provided on the top of the cabinet body and is located above the second chamber, and the air intake of the fan cover is connected to the second chamber of the cabinet body. The fan is installed in the fan cover.

[0009] In the above technical solution, insulating plates are provided on the cabinet and on the left and right sides of the excitation power unit, and transparent organic glass plates are provided on the front and back sides, so that a sealed structure is formed around the excitation power unit; a first support beam is provided in the second chamber of the cabinet, and the excitation power unit is installed on the first support beam, and the excitation power unit includes a plurality of power device groups, each power device group includes a thyristor and a radiator, and side sealing plates are provided on the left and right sides of each thyristor, and a positive air duct sealing plate is provided between adjacent thyristors. The control end of the regulation and control unit is electrically connected to the trigger end of the thyristor, and the input end and protection circuit of the demagnetization switch are electrically connected to the corresponding DC output end of the thyristor respectively. The cooling air entering through the heat dissipation air inlet on the cabinet passes through the second chamber of the cabinet, passes through the radiator, rises to the fan cover, and is finally discharged through the fan.

[0010] In the above technical solution, the fan cover includes a fan cover shell, a fan mounting frame, a top cover plate and a top rotating blade. The fan cover shell is installed at the opening at the top of the second chamber of the cabinet, and a partition net is provided at the opening of the second chamber of the cabinet. The fan is arranged in the inner cavity of the fan cover shell, and the fan is fixedly connected to the fan mounting frame. The fan mounting frame is detachably connected to the fan cover shell, the top cover plate is fixedly connected to the top of the fan cover shell, and the top rotating blade is fixed on the top cover plate as a fan operation indication identification.

[0011] In the above technical solution, the fan cover is connected as a whole by four front, rear, left and right sealing plates. A fan support beam is mounted on the top of the left and right sealing plates of the fan cover, and the fan mounting frame is detachably connected to the fan support beam.

[0012] In the above technical solution, the inner walls of the left and right closing plates of the fan housing are provided with reinforcing ribs for enhancing structural stability and a fan wire binding frame serving as a fan wire binding interface.

[0013] In the above technical solution, a second support beam is provided at the upper part of the first chamber of the cabinet, the adjustment and control unit is provided on the second support beam of the cabinet, a third support beam is provided at the lower part of the second chamber of the cabinet, the protection circuit and the demagnetization resistor are installed on the third support beam, and the protection circuit is located above the demagnetization resistor; a fourth support beam is provided at the lower part of the second chamber of the cabinet, and the demagnetization switch is installed on the fourth support beam.

[0014] In the above technical solution, a plurality of evenly arranged lifting rings for facilitating lifting are provided on the top of the cabinet.

[0015] In the above technical solution, guide rails are provided on the top of the cabinet and on both sides along its length direction.

[0016] The positive effects of the present invention are: after adopting the integrated excitation system structure of the present invention, since the present invention includes a cabinet, a regulating and control unit, an excitation power unit, a demagnetization and protection device, a fan cover and a fan,

[0017] The cabinet is provided with a first chamber and a second chamber arranged in parallel. The demagnetization and protection device includes a demagnetization switch, a protection circuit and a demagnetization resistor. The adjustment and control unit, the protection circuit and the demagnetization resistor are all arranged in the first chamber, and the adjustment and control unit is located in the upper part of the first chamber, and the protection circuit and the demagnetization resistor are located in the lower part of the first chamber. The excitation power unit and the demagnetization switch are arranged in the second chamber, and the excitation power unit is located in the upper part of the second chamber, and the demagnetization switch is located in the lower part of the second chamber.

[0018] The control end of the regulation and control unit is electrically connected to the corresponding input end of the excitation power unit, the input end of the demagnetization switch and the protection circuit are electrically connected to the corresponding DC output end of the excitation power unit respectively, and the demagnetization resistor is electrically connected to the corresponding connection end of the demagnetization switch.

[0019] The cabinet body is provided with a double-leaf cabinet door, and the cabinet door provided at the second chamber of the cabinet body has a heat dissipation air inlet. The fan cover is provided on the top of the cabinet body and is located above the second chamber, and the air intake of the fan cover is connected to the second chamber of the cabinet body. The fan is installed in the fan cover;

[0020] The present invention integrates the regulation and control unit, excitation power unit and demagnetization and protection device into a cabinet with a size of 2260*1400*1000. This makes the excitation product structure develop towards miniaturization and integration, which not only reduces production costs and occupies less space, but also replaces the existing technology of multiple independent single cabinets and cabinet installation technology solutions, making installation and transportation very convenient, without considering the lifting and installation of multiple cabinets, and reducing the difficulty and labor cost of subsequent maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of a specific embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the present invention after the cabinet door is opened;

[0023] Figure 3 This is a structural diagram of the assembly of the excitation power unit and the cabinet of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the fan cover and the fan after being assembled;

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the fan cover of the present invention;

[0026] In the figure, 1-cabinet, 11-cabinet door, 12-insulation board, 13-transparent organic glass board, 14-first support beam, 15-side blocking plate, 16-positive air duct blocking plate, 17-partition, 2-regulation and control unit, 3-excitation power unit, 31-thyristor, 32-radiator, 4-demagnetization and protection device, 41-demagnetization switch, 42-protection circuit, 43-demagnetization resistor, 5-fan cover, 51-fan cover, 511-sealing plate, 512-fan support beam, 513-reinforcement rib, 514-fan wire binding rack, 52-fan mounting frame, 53-top cover plate, 54-top rotor, 6-fan, 7-lifting ring, 8-guide rail. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings and given embodiments, but the present invention is not limited thereto.

[0028] like Figure 1 、 2 , 3, 4, and 5 show an integrated excitation system structure, including a cabinet 1, a regulation and control unit 2, an excitation power unit 3, a demagnetization and protection device 4, a fan cover 5, and a fan 6.

[0029] The cabinet 1 is provided with a first chamber and a second chamber arranged in parallel. The demagnetization and protection device 4 includes a demagnetization switch 41, a protection circuit 42 and a demagnetization resistor 43. The regulation and control unit 2, the protection circuit 42 and the demagnetization resistor 43 are all arranged in the first chamber, and the regulation and control unit 2 is located in the upper part of the first chamber, and the protection circuit 42 and the demagnetization resistor 43 are located in the lower part of the first chamber. The excitation power unit 3 and the demagnetization switch 41 are arranged in the second chamber, and the excitation power unit 3 is located in the upper part of the second chamber, and the demagnetization switch 41 is located in the lower part of the second chamber.

[0030] The control end of the regulation and control unit 2 is electrically connected to the corresponding input end of the excitation power unit 3, the input end of the demagnetization switch 41 and the protection circuit 42 are electrically connected to the corresponding DC output end of the excitation power unit 3, and the demagnetization resistor 43 is electrically connected to the corresponding connection end of the demagnetization switch 41.

[0031] The cabinet body 1 is provided with a double-leaf cabinet door 11, and the cabinet door 11 located at the second chamber of the cabinet body 1 has a heat dissipation air inlet. The fan cover 5 is provided at the top of the cabinet body 1 and is located above the second chamber, and the air intake of the fan cover 5 is connected to the second chamber of the cabinet body 1. The fan 6 is installed in the fan cover 5.

[0032] like Figure 2 、 3 As shown, in order to achieve a better heat dissipation effect, insulating plates 12 are provided on the cabinet 1 and on the left and right sides of the excitation power unit 3, and transparent organic glass plates 13 are provided on the front and back sides to form a sealed structure around the excitation power unit 3; a first support beam 14 is provided in the second chamber of the cabinet 1, and the excitation power unit 3 is mounted on the first support beam 14, and the excitation power unit 3 includes a plurality of power device groups, each of which includes a thyristor 31 and a radiator 32, and a side blocking plate 15 is provided on the left and right sides of each thyristor 31, respectively, and a positive air duct blocking plate 16 is provided between adjacent thyristors 31, the control end of the regulation and control unit 2 is electrically connected to the trigger end of the thyristor 31, the input end and the protection circuit 42 of the demagnetization switch 41 are respectively electrically connected to the corresponding DC output end of the thyristor 31, and the cooling air entering through the heat dissipation air inlet on the cabinet 1 passes through the second chamber of the cabinet 1, passes through the radiator 32, rises to the fan cover 5, and is finally discharged through the fan 6. In order to ensure that the air entering from the bottom of the cabinet 1 flows out only through the gaps between the fins of the radiator 32 to achieve the maximum heat dissipation effect, the present invention adopts the installation layout of each unit in the cabinet 1 and the design of the avoidance structure, which can significantly reduce the front and rear dimensions of the air cavity, ensuring that the front and rear transparent organic glass panels fit as closely as possible with the excitation power unit 3, which is conducive to improving the heat dissipation effect.

[0033] like Figure 4 As shown, in order to make the structure more compact, convenient for assembly, and convenient for subsequent maintenance and overhaul, the fan cover 5 includes a fan cover 51, a fan mounting frame 52, a top cover plate 53 and a top rotor 54. The fan cover 51 is installed at the opening at the top of the second chamber of the cabinet 1, and a partition net 17 is provided at the opening of the second chamber of the cabinet 1. The fan 6 is arranged in the inner cavity of the fan cover 51, and the fan 6 is fixedly connected to the fan mounting frame 52. The fan mounting frame 52 is detachably connected to the fan cover 51. The top cover plate 53 is fixedly connected to the top of the fan cover 51. The top rotor 54 is fixed on the top cover plate 53 as an indication of the operation of the fan 6.

[0034] like Figure 4As shown, in order to further improve the rationality of the structure of the fan cover 51, the fan cover 51 is connected as a whole by four front, rear, left and right sealing plates 511, and a fan support beam 512 is mounted on the top of the left and right sealing plates 511 of the fan cover 51, and the fan mounting frame 52 is detachably connected to the fan support beam 512.

[0035] like Figure 4 As shown, in order to enhance the stability and rigidity of the fan casing structure and facilitate the wiring of the fan, the inner walls of the left and right covering plates 511 of the fan casing 51 are provided with reinforcing ribs 513 for enhancing the structural stability and a fan wire binding frame 514 serving as a fan wire binding interface.

[0036] Further, if Figure 2 As shown, in order to increase the safe creepage distance, a second support beam is provided at the upper part of the first chamber of the cabinet 1, the adjustment and control unit 2 is provided on the second support beam of the cabinet 1, and a third support beam is provided at the lower part of the second chamber of the cabinet 1. The protection circuit 42 and the demagnetization resistor 41 are installed on the third support beam, and the protection circuit 42 is located above the demagnetization resistor 41; a fourth support beam is provided at the lower part of the second chamber of the cabinet 1, and the demagnetization switch 41 is installed on the fourth support beam.

[0037] like Figure 1 、 2 As shown, in order to facilitate subsequent lifting and transportation, the top of the cabinet body 1 is provided with a plurality of evenly arranged lifting rings 7 for facilitating lifting.

[0038] like Figure 1 、 2 As shown, in order to facilitate subsequent use, guide rails 8 are provided on the top of the cabinet 1 and on both sides along its length.

[0039] During the use of the present invention, external three-phase AC current enters the excitation power unit 3, and the regulation and control unit 2 controls and coordinates the excitation power unit 3 through a trigger pulse signal. After coordinated control by the regulation and control unit 2, the excitation power unit 3 converts the AC power into DC power, and the DC power outputs the excitation current to the generator through the demagnetization switch 41. The protection circuit 42 is connected to the DC side output copper bus of the excitation power unit 3 through a secondary line, and the secondary line of the demagnetization resistor 43 is connected to the input copper bus of the demagnetization switch 41.

[0040] The regulation and control unit, excitation power unit and demagnetization and protection device described in the present invention are integrated in a cabinet, and the size of the cabinet is 2260*1400*1000. This makes the excitation product structure develop towards miniaturization and integration, which not only reduces production costs and occupies less space, but also replaces the existing technology of multiple independent single cabinets and cabinet installation technology solutions, making installation and transportation very convenient, without considering the lifting and installation of multiple cabinets, and reducing the difficulty of subsequent maintenance and labor costs.

[0041] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. An integrated excitation system structure, characterized by: It includes a cabinet (1), a regulating and control unit (2), an excitation power unit (3), a demagnetization and protection device (4), a fan cover (5) and a fan (6), The cabinet (1) is provided with a first chamber and a second chamber arranged in parallel. The demagnetization and protection device (4) includes a demagnetization switch (41), a protection circuit (42) and a demagnetization resistor (43). The regulation and control unit (2), the protection circuit (42) and the demagnetization resistor (43) are all arranged in the first chamber, and the regulation and control unit (2) is located in the upper part of the first chamber, and the protection circuit (42) and the demagnetization resistor (43) are located in the lower part of the first chamber. The excitation power unit (3) and the demagnetization switch (41) are arranged in the second chamber, and the excitation power unit (3) is located in the upper part of the second chamber, and the demagnetization switch (41) is located in the lower part of the second chamber. The control end of the regulation and control unit (2) is electrically connected to the corresponding input end of the excitation power unit (3), the input end of the demagnetization switch (41) and the protection circuit (42) are electrically connected to the corresponding DC output end of the excitation power unit (3), and the demagnetization resistor (43) is electrically connected to the corresponding connection end of the demagnetization switch (41). The cabinet body (1) is provided with a double-leaf cabinet door (11), and the cabinet door (11) provided at the second chamber of the cabinet body (1) has a heat dissipation air inlet. The fan cover (5) is provided at the top of the cabinet body (1) and is located above the second chamber, and the air inlet of the fan cover (5) is connected to the second chamber of the cabinet body (1). The fan (6) is installed in the fan cover (5). Insulation plates (12) are provided on the cabinet (1) and on the left and right sides of the excitation power unit (3), and transparent organic glass plates (13) are provided on the front and rear sides, so that a sealed structure is formed around the excitation power unit (3); a first support beam (14) is provided in the second chamber of the cabinet (1), and the excitation power unit (3) is mounted on the first support beam (14), and the excitation power unit (3) includes a plurality of power device groups, each power device group includes a thyristor (31) and a heat sink (32), and the left and right sides of each thyristor (31) are divided into A side blocking plate (15) is provided, and a positive air duct blocking plate (16) is provided between adjacent thyristors (31). The control end of the regulating and control unit (2) is electrically connected to the trigger end of the thyristor (31), and the input end and the protection circuit (42) of the demagnetization switch (41) are electrically connected to the corresponding DC output end of the thyristor (31). The cooling air entering through the heat dissipation air inlet on the cabinet (1) passes through the second chamber of the cabinet (1), passes through the radiator (32), rises to the fan cover (5), and is finally discharged through the fan (6). The fan cover (5) comprises a fan cover shell (51), a fan mounting frame (52), a top cover plate (53) and a top rotating blade (54); the fan cover shell (51) is mounted at the opening of the top of the second chamber of the cabinet (1), and a partition net (17) is provided at the opening of the second chamber of the cabinet (1); the fan (6) is arranged in the inner cavity of the fan cover shell (51), and the fan (6) is fixedly connected to the fan mounting frame (52); the fan mounting frame (52) is detachably connected to the fan cover shell (51); the top cover plate (53) is fixedly connected to the top of the fan cover shell (51), and the top rotating blade (54) is fixed on the top cover plate (53) as an indication of the operation of the fan (6).

2. The integrated excitation system structure according to claim 1, characterized in that: The fan housing (51) is connected as a whole by four front, rear, left and right sealing plates (511); a fan support beam (512) is mounted on the top of the left and right sealing plates (511) of the fan housing (51); and the fan mounting frame (52) is detachably connected to the fan support beam (512).

3. The integrated excitation system structure according to claim 2, characterized in that: Reinforcing ribs (513) for enhancing structural stability and a fan wire binding frame (514) serving as a fan wire binding interface are provided on the inner walls of the left and right closing plates (511) of the fan housing (51).

4. The integrated excitation system structure according to claim 1, characterized in that: A second support beam is provided at the upper portion of the first chamber of the cabinet (1), the adjustment and control unit (2) is provided on the second support beam of the cabinet (1), a third support beam is provided at the lower portion of the second chamber of the cabinet (1), the protection circuit (42) and the demagnetization resistor (43) are installed on the third support beam, and the protection circuit (42) is located above the demagnetization resistor (43); a fourth support beam is provided at the lower portion of the second chamber of the cabinet (1), and the demagnetization switch (41) is installed on the fourth support beam.

5. The integrated excitation system structure according to claim 1, characterized in that: The top of the cabinet (1) is provided with a plurality of evenly arranged lifting rings (7) for facilitating lifting.

6. The integrated excitation system structure according to claim 1, characterized in that: Guide rails (8) are provided on the top of the cabinet (1) and on both sides along its length.

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