A high-voltage power distribution cabinet with a belt line hub mechanism

Abstract

The application relates to the technical field of adhesives, in particular to a high-voltage power distribution cabinet with a belt line collecting mechanism. The cabinet body comprises a signal cavity at the top and a cable cavity at the bottom, the cable cavity is provided with a mounting plate, a plurality of groups of wiring modules are arranged on the mounting plate and are used for arranging and connecting high-voltage cables; wherein the mounting plate is arranged in the cable cavity and is movably connected to the rear wall of the cable cavity in the horizontal direction; the mounting plate and the rear wall of the cable cavity are connected through a plurality of air cylinders, the output shaft of the air cylinder is hingedly connected to the mounting plate through a universal joint, the cable cavity is divided into a plurality of wiring modules, the magnetic field superposition caused by the parallel distribution of the plurality of high-voltage cables can be avoided, the influence of the magnetic field is reduced, the cables can be more orderly distributed, and after the partition setting, the maintenance and inspection and the search for the corresponding cables by the operators in the later period are facilitated.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of adhesives, in particular to a high-voltage power distribution cabinet with a bundle line collecting mechanism. BACKGROUND

[0002] The high-voltage power distribution cabinet refers to an electric product with the functions of on-off, control or protection in power generation, power transmission, power distribution, power conversion and consumption, and the voltage level is 3.6kV-550kV. The high-voltage power distribution cabinet is an important component of power transmission and transformation equipment and plays a very important role in the entire electric power industry.

[0003] With the increase of power transportation capacity, the high-voltage power distribution cabinet is continuously improved to adapt to the power transmission demand of different voltages and meet the heat dissipation level under different working conditions.

[0004] For example, the high-voltage power distribution cabinet disclosed in Chinese Patent No. CN104617504B comprises a cabinet body, and a cabinet door is arranged at the front part of the cabinet body. The features are that a first transverse partition plate and a second transverse partition plate are arranged inside the cabinet body, the middle position of the upper surface of the first transverse partition plate is upwardly protruded, the lower surface of the first transverse partition plate is upwardly recessed corresponding to the protruded part of the upper surface; the middle position of the upper surface of the second transverse partition plate is downwardly recessed, and the lower surface of the second transverse partition plate is downwardly protruded corresponding to the recessed part of the upper surface.

[0005] It also comprises a temperature sensor, a controller, a fan and a flexible air supply pipe. The temperature sensor is arranged inside the cabinet body, the temperature signal collected by the temperature sensor is input to the controller, the controller controls the start and stop of the fan, the flexible air supply pipe comprises an input port and two output ports, the air outlet of the fan is connected to the input port of the flexible air supply pipe, and the output ports of the flexible air supply pipe are respectively connected to the air inlets of the two transverse partition plates.

[0006] The application effectively solves the problem of heat dissipation in the power distribution cabinet, and the space utilization rate of the cabinet body is extremely high.

[0007] However, when the line in the power distribution cabinet transmits high-voltage current, when multiple current-carrying wires are distributed in parallel, the power frequency magnetic field generated thereby will be superimposed on each other, resulting in a significant increase in the magnetic field strength in the local area. At this time, the magnetic field strength may exceed the equipment tolerance standard, interfering with the secondary control loop. In addition, during the on-off operation or short-circuit fault, the transient large current will also induce a pulse magnetic field, accelerating the aging of the components in the power distribution cabinet and affecting the stability of the high-frequency signal transmission line in the cabinet.

[0008] In order to solve the above problems, the application provides a high-voltage power distribution cabinet with a bundle line collecting mechanism. SUMMARY

[0009] The purpose of the application is to provide a high-voltage power distribution cabinet with a bundle line collecting mechanism to solve the problems raised in the background art.

[0010] In order to solve the above technical problems, the present application provides the following technical solutions: a high-voltage distribution cabinet with a belt line concentrator mechanism, comprising a cabinet body, the cabinet body comprises a signal cavity at the top and a cable cavity at the bottom, the cable cavity is provided with

[0011] A mounting plate is provided in the cable cavity perpendicular to the horizontal plane and is movably connected to the rear wall of the cable cavity in the horizontal direction;

[0012] The wiring module is arrayed with a plurality of groups, and each group of wiring modules is connected to the mounting plate in the vertical direction through a movable part;

[0013] The wiring module comprises a wiring board and a high-voltage cable, and each wiring board is provided with at least one group of wire slots, each group of wire slots is adapted to two groups of high-voltage cables, each group of high-voltage cables contains three high-voltage wires, and the three high-voltage wires are respectively connected to the wire slots in the vertical direction and at an angle of 30-60° with the vertical line;

[0014] An aluminum wire box is provided outside the high-voltage cable, and the three high-voltage wires are arranged in parallel or twisted and interlaced in the wire box to form a twisted distribution;

[0015] An aluminum box is provided outside each group of wiring modules to cover them, and an aluminum plate is provided between the mounting plate and the wiring module.

[0016] More preferably, a plurality of wiring sockets corresponding to the wire slots are provided on the wiring board, and the wiring sockets are arranged towards the wire slots in the vertical direction and at an angle of 30-60° with the vertical line to clamp the high-voltage wires and determine the extension direction of the high-voltage wires.

[0017] More preferably, when the high-voltage wires are arranged in parallel in the wire box, the wire box is divided into corresponding accommodation spaces by an aluminum partition to accommodate the high-voltage wires.

[0018] More preferably, three aluminum wire sleeves are provided in each wire box, and each wire sleeve accommodates one high-voltage wire, the wire sleeve is clamped in the wiring socket and extends towards the corresponding wire slot.

[0019] More preferably, bus boxes perpendicular to the horizontal plane are provided on both sides of the mounting plate, the bus boxes are made of aluminum, the wire boxes are slidably connected to the bus boxes and communicate with them, and the high-voltage cables are divided and passed through the wire boxes through the bus boxes.

[0020] More preferably, a connecting plate fixed to the mounting plate is provided outside the bus box, the bus box is fixed to the connecting plate, the movable part is located on the side surface of the wiring module, and the movable part comprises a movable rack fixed to the wiring module in the vertical direction and a movable gear fixed to the extended section of the connecting plate and used to drive the movable rack to move up and down.

[0021] More preferably, the movable part further comprises a rotating shaft rotatably connected to the extended section of the connecting plate, a movable worm gear, and a movable worm used to drive the movable worm gear to rotate;

[0022] Both the movable worm gear and the movable gear are coaxially fixed on the rotating shaft;

[0023] The movable worm extends beyond the connecting plate.

[0024] In a more optimized configuration, the connecting plate has a sliding groove and a mounting groove, and the wiring module is slidably connected in the sliding groove via a sliding plate; the aluminum plate is embedded in the mounting groove.

[0025] In a more optimized configuration, the mounting plate is connected to the rear wall of the cable cavity by several cylinders, and the end of the cylinder output shaft is hinged to the mounting plate by a universal joint.

[0026] In a more optimized configuration, the high-voltage line is connected to the cable tray at an angle of 45°, and the inclination angles of the high-voltage lines on both symmetrical sides are the same.

[0027] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0028] (1) This invention divides the cable cavity into several wiring modules, which can avoid the magnetic field superposition caused by the parallel distribution of multiple high-voltage cables, reduce the influence of the magnetic field, and make the cable distribution more orderly. After the partitioning, it is convenient for operators to carry out later maintenance and inspection and find the corresponding cables. At the same time, by splitting the conductors (three high-voltage lines), the conductor radius is effectively increased, the reactance is reduced and the magnetic field distribution is improved. Moreover, the three high-voltage lines set on each wiring module are connected to the cable tray in different directions, which further disrupts the distribution direction of the high-voltage cables. The opposite cable distribution directions can cancel out the corresponding magnetic fields, which greatly reduces the power frequency magnetic field in the cabinet.

[0029] (2) In this invention, when the three high-voltage lines are set in parallel, the space to be accommodated is separated by aluminum partitions, which can reduce the magnetic field influence between adjacent high-voltage lines; or aluminum wire sleeves are set outside each high-voltage line, which not only reduces the magnetic field influence, but also protects the cable, but significantly increases the production cost and maintenance difficulty. Therefore, the three high-voltage lines can be twisted and intertwined to form a braid shape, which not only improves the cable strength, but also makes the magnetic fields between the three high-voltage lines cancel each other out, thereby reducing the overall power frequency magnetic field.

[0030] (3) In this invention, the spacing between cables is also an important factor affecting the superposition of magnetic fields. The optimal spacing varies for high-voltage lines of different sizes. Therefore, this invention sets the wiring module to be height adjustable, so that the spacing can be adjusted according to the high-voltage lines of different sizes, achieving the best adjustment effect within a limited space.

[0031] (4) in the present application, the operator can rotate the side extending movable worm, drive the movable worm wheel and movable gear, thereby making the wiring module up and down to adjust the spacing, so as to reduce the magnetic field superposition effect. In addition, the self-locking of the worm wheel and the worm can also make the wiring module stay at any height, which is convenient for the operator to adjust and fix. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is the overall schematic diagram of example 1;

[0033] Figure 2 It is the structure diagram of the mounting plate in example 1;

[0034] Figure 3 It is the overall structure diagram of the wiring module;

[0035] Figure 4 It is the internal schematic diagram of the wiring module;

[0036] Figure 5 It is the structure diagram for showing the movable part;

[0037] Figure 6 It is the schematic diagram for showing the connection structure between the wiring module and the connecting plate.

[0038] Among them, 1, cabinet; 11, signal cavity; 12, cable cavity; 2, mounting plate; 21, air cylinder; 3, wiring module; 31, wiring board; 32, wire slot; 33, wiring card seat; 34, aluminum box; 35, sliding plate; 4, movable part; 41, movable rack; 42, movable gear; 43, rotating shaft; 44, movable worm wheel; 45, movable worm; 5, high-voltage wire; 51, wire sleeve; 6, wire box; 7, aluminum plate; 8, bus box; 9, connecting plate; 91, sliding groove; 92, mounting groove. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0040] The present application provides a high-voltage power distribution cabinet with a belt line collection mechanism, which comprises a cabinet body, a signal cavity, a cable cavity, a mounting plate, an air cylinder, a wiring module, a wiring board, a wire slot, a wiring card seat, an aluminum box, a sliding plate, a movable part, a movable rack, a movable gear, a rotating shaft, a movable worm wheel, a movable worm, a high-voltage wire, a wire sleeve, a wire box, an aluminum plate, a bus box, a connecting plate, a sliding groove and a mounting groove. Figure 1 and Figure 2As shown, including cabinet 1, cabinet 1 includes the top signal cavity 11 and the bottom cable cavity 12, the cable cavity 12 is provided with mounting plate 2, the mounting plate 2 is provided with a plurality of groups of wiring modules 3, which are used to arrange high-voltage cables. Among them, the mounting plate 2 is perpendicular to the horizontal plane and is movably connected to the rear wall of the cable cavity 12. The mounting plate 2 and the rear wall of the cable cavity 12 are connected by a plurality of air cylinders 21, and the output shaft of the air cylinder 21 is connected to the mounting plate 2 by a universal joint.

[0041] When the operator is repairing, the mounting plate 2 and the wiring module can be pushed out by adjusting the air cylinder 21, and the angle of the mounting plate 2 can be adjusted by separately controlling the air cylinder 21 at different positions, so as to facilitate the repair.

[0042] As shown, Figures 3 to 6 The wiring module 3 is arranged in a plurality of groups, and each group of wiring modules 3 is connected to the mounting plate 2 in the vertical direction by a movable part 4. The wiring module 3 includes a wiring board 31 and a high-voltage cable, and each wiring board 31 is provided with at least one group of wire grooves 32. Each group of wire grooves 32 is adapted to two groups of high-voltage cables, and each group of high-voltage cables contains three high-voltage wires 5, which are respectively connected to the wire grooves 32 in the vertical direction and at an angle of 30-60° to the vertical.

[0043] The wiring board 31 is provided with a corresponding number of wiring card seats 33, which are arranged in the vertical direction and at an angle of 30-60° to the vertical towards the wire grooves 32, and are used to clamp the high-voltage wires 5 and determine the extension direction of the high-voltage wires 5. The angle of the high-voltage wires 5 connected to the wire grooves 32 is preferably 45°, and the inclination angles of the high-voltage wires 5 on both sides are the same.

[0044] An aluminum box 6 is provided outside the high-voltage cable, and three high-voltage wires 5 are arranged in parallel or twisted and interlaced in the aluminum box 6 to form a twisted distribution. Each group of wiring modules 3 is provided with an aluminum box 34 covering it, and an aluminum plate 7 is provided between the mounting plate 2 and the wiring module 3. When the high-voltage wires 5 are arranged in parallel in the aluminum box 6, the aluminum box 6 can be divided into corresponding accommodation spaces by an aluminum partition to accommodate the high-voltage wires 5.

[0045] As an optimization, three aluminum wire sleeves 51 can be provided in each aluminum box 6, and each wire sleeve 51 can accommodate one high-voltage wire 5. The wire sleeve 51 is clamped in the wiring card seat 33 and extends towards the corresponding wire groove 32.

[0046] Due to the dense distribution of cables in the high-voltage distribution cabinet, the current is large, so when multiple current-carrying wires are distributed in parallel, the working condition magnetic field generated by them is superimposed on each other, resulting in a significant increase in the magnetic field strength in the cabinet 1; when the current is too large, it may exceed the equipment tolerance standard and interfere with the control loop. Therefore, the vertical layered distribution mode is used in the present application, the control cable is placed in the signal cavity 11 at the top, and the high-voltage cable is placed in the cable cavity 12 at the bottom, after the two are separated, the influence of the magnetic field in the cable cavity 12 on the control circuit is greatly reduced.

[0047] Secondly, the cable cavity 12 is divided into several wiring modules 3, which can avoid the magnetic field superposition caused by the parallel distribution of multiple high-voltage cables, reduce the influence of the magnetic field, and also make the cable distribution more orderly, after partitioning, it is convenient for the operator to maintain and check in the later period and find the corresponding cable. At the same time, in the form of split conductor (three high-voltage lines 5), the equivalent radius of the conductor is increased, the reactance is reduced, and the magnetic field distribution is improved, and the three high-voltage lines 5 arranged on each wiring module 3 are connected to the wire slot 32 in different directions, which further disrupts the distribution direction of the high-voltage cable. The opposite cable distribution direction can offset the corresponding magnetic field, greatly reducing the power frequency magnetic field in the cabinet 1.

[0048] Among them, when the angle is 45°, the maximum offset effect can be achieved, and the power frequency magnetic field reduction effect is most significant.

[0049] In order to further reduce the mutual influence between multiple high-voltage cables, when the three high-voltage lines 5 are arranged in parallel, an aluminum partition is arranged to divide the containing space, which can reduce the magnetic field influence between adjacent high-voltage lines 5; or an aluminum wire sleeve 51 is arranged outside each high-voltage line 5, which not only reduces the magnetic field influence, but also protects the cable, but significantly increases the production cost and maintenance difficulty, therefore, the three high-voltage lines 5 can be entangled and interwoven to form a spiral shape, which not only improves the cable strength, but also offsets the magnetic field between the three high-voltage lines 5, thereby reducing the overall power frequency magnetic field.

[0050] In addition, an aluminum box 34 and an aluminum plate 7 are arranged outside each group of wiring modules 3, the arrangement of the aluminum box 34 and the aluminum plate 7 can shield the magnetic field interference and reduce the influence of the magnetic field in the cable cavity 12 on the elements in the signal cavity 11.

[0051] The mounting plate 2 is provided with a bus box 8 perpendicular to the horizontal plane on both sides, the bus box 8 is made of aluminum, the wire box 6 is slidably connected to the bus box 8 and communicates with the bus box 8, and the high-voltage cable is divided and passed into each wire box 6 through the bus box 8. The bus box 8 is fixed on the connecting plate 9, the movable part 4 is located on the side of the wiring module 3, and includes a movable rack 41 fixed on the wiring module 3 in the vertical direction and a movable gear 42 fixed on the extended section of the connecting plate 9 and used to drive the movable rack 41 to ascend and descend.

[0052] The movable part 4 further comprises a rotating shaft 43 connected to the extended section of the connecting plate 9, a movable worm wheel 44, and a movable worm 45 for driving the movable worm wheel 44 to rotate; the movable worm wheel 44 and the movable gear 42 are coaxially fixed on the rotating shaft 43; the movable worm 45 extends out of the connecting plate 9. The connecting plate 9 is provided with a sliding groove 91 and a mounting groove 92; the wiring module 3 is slidingly connected in the sliding groove 91 through the sliding plate 35; and the aluminum plate 7 is embedded in the mounting groove 92.

[0053] The bus box 8 is arranged to shield the high magnetic field generated by the large bundle of high-voltage wires 5 when the cables are connected to the power distribution cabinet, and thus has a large thickness to achieve a good shielding effect. The spacing between the cables is also an important factor affecting the superposition of the magnetic field, and the optimal spacing is different for high-voltage wires 5 of different sizes. Therefore, the wiring module 3 is arranged to be adjustable in height, that is, the spacing can be adjusted according to the size of the high-voltage wire 5 to achieve the best adjustment effect in a limited space.

[0054] Due to the arrangement of the movable part 4, the operator can rotate the movable worm 45 extending out of the side surface to drive the movable worm wheel 44 and the movable gear 42, thereby moving the wiring module 3 up and down to adjust the spacing and achieve the purpose of reducing the superposition effect of the magnetic field. In addition, the self-locking property of the worm and the gear can enable the wiring module 3 to stop at any height, facilitating the adjustment and fixation of the operator.

[0055] To verify the use effect of the present application, two groups of power distribution cabinets with different structures are tested. In the test, the example is the power distribution cabinet of the present application; in the comparative example 1, only vertical layered distribution and modular wiring are used without using aluminum shielding; and in the comparative example 2, a common power distribution cabinet is used without using vertical layered distribution and modular wiring module. The number of cables and the spacing between the cables are the same for the three.

[0056] The parameters obtained after the test are shown in Table 1.

[0057] Table 1: Test results of the example and the two comparative examples

[0058] Parameter Example Comparative Example 1 Example Relative Reduction Comparative Example 2 Example Relative Reduction Magnetic field strength (0.1-10 MHz) 0.04 mT 0.11 mT 64％ 0.25 mT 84％ Signal line common mode interference voltage 1.2V 4V 70％ 12V 90％ Ground resistance 1.8 Ω 4.3 Ω 58.1％ 8 Ω 77.5％

[0059] As can be seen from Table 1, in the present application, the vertical layered distribution, modular wiring, and aluminum shielding are used in a synergistic manner, and compared with the common power distribution cabinet, the magnetic field strength is reduced by 84%, the common mode interference voltage of the signal line is reduced by 90%, and the grounding resistance is reduced by 77.5%, which is greatly reduced. Even the comparative example 1 which does not use aluminum shielding has a better effect than the common power distribution cabinet, and thus the present application has a significant advantage in reducing the magnetic field.

[0060] The above merely describes optional embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation made according to the content of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A high-voltage distribution cabinet with a cable bundle mechanism, comprising a cabinet body (1), the cabinet body (1) including a signal cavity (11) at the top and a cable cavity (12) at the bottom, characterized in that: The cable cavity (12) is provided with Mounting plate (2) is disposed perpendicular to the horizontal plane in the cable cavity (12) and is movably connected to the rear wall of the cable cavity (12) in the horizontal direction; Wiring modules (3) are arranged in an array of several groups, and each group of wiring modules (3) is connected to the mounting plate (2) in the vertical direction through a movable part (4); The wiring module (3) includes a wiring board (31) and high-voltage cables. Each wiring board (31) is provided with at least one set of wire grooves (32). Each set of wire grooves (32) is adapted to two sets of high-voltage cables. Each set of high-voltage cables includes three high-voltage wires (5). The three high-voltage wires (5) are respectively connected to the wire grooves (32) along the vertical direction and at an angle of 30 to 60° with the vertical. An aluminum junction box (6) is installed outside the high-voltage cable. The three high-voltage cables (5) are arranged in parallel or twisted and intertwined in the junction box (6) in a braided pattern. Each wiring module (3) is provided with an aluminum box (34) covering it, and an aluminum plate (7) is provided between the mounting plate (2) and the wiring module (3).

2. A high-voltage distribution cabinet with a bundled wire hub mechanism according to claim 1, characterized in that: The terminal block (31) is provided with a number of terminal brackets (33) corresponding to the number of the wire grooves (32). The terminal brackets (33) are arranged along the vertical direction and at an angle of 30 to 60° to the vertical towards the wire grooves (32) to clamp the high voltage line (5) and determine the extension direction of the high voltage line (5).

3. A high-voltage distribution cabinet with a bundled wire hub mechanism according to claim 1, characterized in that: When the high-voltage line (5) is arranged in parallel in the junction box (6), the junction box (6) is divided into corresponding receiving spaces by aluminum partitions to accommodate the high-voltage line (5).

4. A high-voltage distribution cabinet with a bundled wire hub mechanism according to claim 2, characterized in that: Each of the junction boxes (6) is provided with three aluminum wire sleeves (51), and each wire sleeve (51) is fitted with a high-voltage wire (5). The wire sleeve (51) is snapped into the wiring bracket (33) and extends into the corresponding wire groove (32).

5. A high-voltage distribution cabinet with a bundled wire hub mechanism according to claim 1, characterized in that: The mounting plate (2) has bus boxes (8) arranged perpendicular to the horizontal plane on both sides. The bus boxes (8) are made of aluminum. The wire box (6) is slidably connected to the bus box (8) and communicates with it. The high-voltage cable passes through the bus box (8) and is distributed in each of the wire boxes (6).

6. A high-voltage distribution cabinet with a bundled wire hub mechanism according to claim 5, characterized in that: The bus box (8) is provided with a connecting plate (9) fixed to the mounting plate (2). The bus box (8) is fixed on the connecting plate (9). The movable part (4) is located on the side of the wiring module (3) and includes a movable rack (41) fixed on the wiring module (3) along the vertical direction and a movable gear (42) fixed on the extension of the connecting plate (9) and used to drive the movable rack (41) to rise and fall.

7. A high-voltage distribution cabinet with a bundled wire hub mechanism according to claim 6, characterized in that: The movable component (4) also includes a rotating shaft (43) rotatably connected to the extension of the connecting plate (9), a movable worm gear (44), and a movable worm (45) for driving the movable worm gear (44) to rotate; The movable worm gear (44) and the movable gear (42) are both fixed coaxially on the rotating shaft (43); The movable worm (45) extends outside the connecting plate (9).

8. A high-voltage distribution cabinet with a bundled wire hub mechanism according to claim 7, characterized in that: The connecting plate (9) is provided with a sliding groove (91) and a mounting groove (92). The wiring module (3) is slidably connected in the sliding groove (91) via a sliding plate (35). The aluminum plate (7) is embedded in the mounting groove (92).

9. A high-voltage distribution cabinet with a bundled wire hub mechanism according to claim 1, characterized in that: The mounting plate (2) is connected to the rear wall of the cable cavity (12) by a number of cylinders (21), and the end of the output shaft of the cylinder (21) is hinged to the mounting plate (2) by a universal joint.

10. A high-voltage distribution cabinet with a bundled wire hub mechanism according to claim 1, characterized in that: The high-voltage line (5) is connected to the groove (32) at an angle of 45°, and the high-voltage line (5) on both sides of the symmetrical sides has the same tilt angle.

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