High-voltage power distribution cabinet with bunch concentration mechanism

Abstract

The invention relates to the technical field of adhesives, in particular to a high-voltage power distribution cabinet with a wire harness concentration mechanism. Comprising a cabinet body, the cabinet body comprises a signal cavity at the top and a cable cavity at the bottom, a mounting plate is arranged in the cable cavity, and a plurality of groups of wiring modules are arranged on the mounting plate in an array and used for connecting high-voltage cables; wherein the mounting plate is arranged in the cable cavity in a manner of being perpendicular to the horizontal plane and is movably connected to the rear wall of the cable cavity in the horizontal direction; the mounting plate is connected with the rear wall of the cable cavity through a plurality of air cylinders, and the tail ends of output shafts of the air cylinders are hinged to the mounting plate through universal joints; the interior of the cable cavity is divided into a plurality of wiring modules, magnetic field superposition caused by parallel distribution of a plurality of high-voltage cables can be avoided, the influence of the magnetic field is reduced, the cables can be distributed more orderly, and operators can conveniently maintain, inspect and find corresponding cables in the later period after partition arrangement.

Description

Technical Field

[0001] The invention relates to the technical field of adhesives, in particular to a high-voltage distribution cabinet with a wire harness collection mechanism. Background Art

[0002] High-voltage distribution cabinet refers to an electrical product with a voltage level of 3.6kV to 550kV, which plays the role of switching, controlling or protecting in the power generation, transmission, distribution, power conversion and consumption of the power system. High-voltage distribution cabinet is an important part of power transmission and transformation equipment, and occupies a very important position in the entire power industry.

[0003] As the amount of electricity transported increases, high-voltage distribution cabinets are also constantly being improved to adapt to the power transmission needs of different voltages and meet the heat dissipation levels under different working conditions.

[0004] For example, a Chinese patent with publication number CN104617504B discloses a high-voltage power distribution cabinet, including a cabinet body, a cabinet door is arranged at the front of the cabinet body; the cabinet body is characterized in that a first transverse partition and a second transverse partition are arranged inside the cabinet body, the middle position of the upper surface of the first transverse partition is convex upward, and the lower surface of the first transverse partition is concave upward corresponding to the convex part of the upper surface; the middle position of the upper surface of the second transverse partition is concave downward, and the lower surface of the second transverse partition is convex downward corresponding to the concave part of the upper surface;

[0005] It also includes a temperature sensor, a controller, a fan, and a flexible air supply duct; the temperature sensor is arranged inside the cabinet, and the temperature signal collected by the temperature sensor is input into the controller, and the controller controls the start and stop of the fan; the flexible air supply duct includes an input port and two output ports, the air outlet of the fan is connected to the input port of the flexible air supply duct, and the output port of the flexible air supply duct is respectively connected to the air inlets of the two horizontal partitions.

[0006] The invention effectively solves the problem of heat dissipation inside the distribution cabinet, and the cabinet space utilization rate is extremely high.

[0007] However, when the lines in the distribution cabinet are transmitting high-voltage current, when multiple current-carrying wires are distributed in parallel, the power-frequency magnetic fields they generate will overlap with 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 and interfere with the secondary control circuit. In addition, during opening and closing operations or short-circuit faults, transient large currents will also induce pulse magnetic fields, accelerate the aging of components in the distribution cabinet, and affect the stability of the high-frequency signal transmission lines in the cabinet.

[0008] In order to solve the above problems, the present invention provides a high-voltage power distribution cabinet with a wire harness collection mechanism. Summary of the invention

[0009] The object of the present invention is to provide a high-voltage power distribution cabinet with a wire harness and line collection mechanism to solve the problems raised in the above-mentioned background technology.

[0010] In order to solve the above technical problems, the present invention provides the following technical solutions: a high-voltage power distribution cabinet with a cable harness mechanism, comprising a cabinet body, the cabinet body comprising a signal cavity at the top and a cable cavity at the bottom, and a

[0011] The mounting plate is arranged 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 modules are arranged in several groups in the array, and each group of wiring modules is connected to the mounting plate in the vertical direction through movable parts;

[0013] The wiring module includes a wiring board and a high-voltage cable. Each wiring board is provided with at least one set of wire troughs. Each set of wire troughs is adapted to two sets of high-voltage cables. Each set of high-voltage cables contains three high-voltage wires. The three high-voltage wires are connected to the wire troughs along the vertical direction and at an angle of 30 to 60 degrees to the vertical.

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

[0015] Each set of wiring modules is provided with an aluminum box covering it, and an aluminum plate is provided between the mounting plate and the wiring modules.

[0016] More optimally, the terminal board is provided with a number of wiring sockets corresponding to the wire ducts, and the wiring sockets are arranged toward the wire ducts along the vertical direction and at an angle of 30 to 60 degrees with the vertical line to clamp the high-voltage wires and determine the extension direction of the high-voltage wires.

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

[0018] More optimally, three aluminum wire sleeves are provided in each wire box, each wire sleeve is sleeved with a high-voltage wire, and the wire sleeves are clamped in the wiring socket and extend to the corresponding wire slot.

[0019] More optimally, bus boxes are provided on both sides of the mounting plate and are arranged perpendicular to the horizontal plane. The bus boxes are made of aluminum. The wire boxes are slidably connected to the bus boxes and communicated with them. The high-voltage cables are passed through the bus boxes and passed into each wire box.

[0020] More optimally, a connecting plate fixed to the mounting plate is provided outside the bus box, the bus box is fixed on the connecting plate, and the movable parts are located on the side of the wiring module, including a movable rack fixed on the wiring module along the vertical direction and a movable gear fixed on the extension section of the connecting plate and used to drive the movable rack to rise and fall.

[0021] Preferably, the movable member further comprises a rotating shaft rotatably connected to the extended section of the connecting plate, a movable worm wheel, and a movable worm for driving the movable worm wheel to rotate;

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

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

[0024] Preferably, the connecting plate is provided with a sliding groove and a mounting groove, and the connecting module is slidably connected in the sliding groove through a sliding plate; the aluminum plate is embedded in the mounting groove.

[0025] Preferably, the mounting plate and the rear wall of the cable cavity are connected by a plurality of cylinders, and the end of the output shaft of the cylinder is hinged to the mounting plate through a universal joint.

[0026] Preferably, the angle at which the high-voltage wire accesses the wire groove is 45°, and the inclination angles of the high-voltage wires on both symmetric sides are the same.

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

[0028] (1) In the present invention, a plurality of wiring modules are separated in the cable cavity, which can avoid the magnetic field superposition caused by the parallel distribution of multiple high-voltage cables, reduce the magnetic field influence, and also make the cable distribution more orderly. After the partition setting, it is convenient for the operator to perform later maintenance inspection and find the corresponding cables. At the same time, in the form of split conductors (three high-voltage wires), the conductor radius is equivalently increased, the reactance is reduced and the magnetic field distribution is improved, and the three high-voltage wires arranged on each wiring module are connected to the wire groove in different directions, further disrupting the distribution direction of the high-voltage cables. The opposite cable distribution directions can cancel the corresponding magnetic fields, greatly reducing the power frequency magnetic field in the cabinet.

[0029] (2) In the present invention, when the three high-voltage wires are arranged in parallel, a receiving space is separated by an aluminum partition, which can reduce the magnetic field influence between adjacent high-voltage wires; or an aluminum wire sleeve is arranged outside each high-voltage wire, which not only reduces the magnetic field influence, but also can protect the cable, but significantly increases the production cost and the maintenance difficulty. Therefore, it is optional to entangle and interweave the three high-voltage wires to form a twist shape, which can not only improve the cable strength, but also make the magnetic fields between the three high-voltage wires cancel each other, thereby reducing the overall power frequency magnetic field.

[0030] (3) In the present invention, the interval between cables is also an important influencing factor for magnetic field superposition. For high-voltage wires of different sizes, the optimal spacing is different. Therefore, the present invention sets the wiring module to be adjustable in height, that is, the spacing can be adjusted according to high-voltage wires of different sizes to achieve the best adjustment effect in a limited space.

[0031] (4) In the present invention, the operator can rotate the movable worm extending from the side to drive the movable worm wheel and the movable gear, so that the wiring module can move up and down to adjust the spacing, thereby achieving the purpose of reducing the magnetic field superposition effect. In addition, the self-locking property of the worm wheel can also make the wiring module stay at any height, which is convenient for the operator to adjust and fix. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is an overall schematic diagram of Example 1;

[0033] Figure 2 It is a structural diagram of the mounting plate in Example 1;

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

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

[0036] Figure 5 A structural diagram for displaying moving parts;

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

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

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] The present invention provides a high-voltage power distribution cabinet with a wire harness and wire collection mechanism, such as Figure 1 and Figure 2As shown, the cabinet 1 includes a signal cavity 11 at the top and a cable cavity 12 at the bottom. A mounting plate 2 is provided in the cable cavity 12. A plurality of wiring modules 3 are arranged in an array on the mounting plate 2 for arranging high-voltage cables. The mounting plate 2 is arranged in the cable cavity 12 perpendicular to the horizontal plane and is movably connected to the rear wall of the cable cavity 12 in the horizontal direction. The mounting plate 2 is connected to the rear wall of the cable cavity 12 through a plurality of cylinders 21. The end of the output shaft of the cylinder 21 is hinged to the mounting plate 2 through a universal joint.

[0041] In this way, when performing maintenance, the operator can push out the entire installation plate 2 together with several wiring modules by adjusting the cylinder 21, and can also adjust the angle of the installation plate 2 by individually controlling the cylinders 21 in different positions, thereby facilitating maintenance.

[0042] like Figures 3 to 6 As shown, the wiring module 3 array is provided with several groups, and each group of wiring modules 3 is connected to the mounting plate 2 in the vertical direction through the movable member 4. The wiring module 3 includes a wiring board 31 and a high-voltage cable. Each wiring board 31 is provided with at least one group of wire troughs 32. Each group of wire troughs 32 is adapted to two groups of high-voltage cables. Each group of high-voltage cables includes three high-voltage wires 5. The three high-voltage wires 5 are connected to the wire troughs 32 along the vertical direction and at an angle of 30 to 60 degrees with the vertical.

[0043] The wiring board 31 is provided with a number of wiring sockets 33 corresponding to the number of the wire troughs 32. The wiring sockets 33 are arranged toward the wire troughs 32 along the vertical direction and at an angle of 30 to 60 degrees with the vertical line, so as to clamp the high-voltage wire 5 and determine the extension direction of the high-voltage wire 5. The angle at which the high-voltage wire 5 is connected to the wire trough 32 is preferably 45 degrees, and the inclination angles of the high-voltage wires 5 on both sides of the symmetry are the same.

[0044] An aluminum wire box 6 is arranged outside the high-voltage cable, and three high-voltage wires 5 are arranged in parallel or twisted and interwoven in a braided shape in the wire box 6; an aluminum box 34 covering the wiring module 3 is arranged outside each group of wiring modules, and an aluminum plate 7 is arranged between the mounting plate 2 and the wiring module 3. When the high-voltage wires 5 are arranged in parallel in the wire box 6, the wire box 6 can be provided with corresponding accommodation spaces divided by aluminum partitions to accommodate the high-voltage wires 5.

[0045] As an optimization, three aluminum wire sleeves 51 may be provided in each wire box 6 , each wire sleeve 51 having a high-voltage wire 5 sleeved therein, and the wire sleeve 51 is clamped in the wiring socket 33 and extends to the corresponding wire slot 32 .

[0046] Due to the dense distribution of cables inside the high-voltage switchgear cabinet and the large current passing through, when multiple current-carrying conductors are distributed in parallel, the working magnetic fields generated by them are superimposed on each other, resulting in a significant increase in the magnetic field intensity inside the cabinet 1; when the current is too large, it may exceed the equipment tolerance standard and interfere with the control circuit. Therefore, the present invention uses a vertical layered distribution mode. First, the control cables are placed in the signal cavity 11 at the top, and the high-voltage cables are 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, several wiring modules 3 are separated in the cable cavity 12, which can avoid the magnetic field superposition caused by the parallel distribution of multiple high-voltage cables, reduce the magnetic field influence, and also make the cable distribution more orderly. After the partition setting, it is convenient for the operator to perform later maintenance inspection and find the corresponding cables. At the same time, in the form of split conductors (three high-voltage lines 5), the conductor radius is equivalently increased, the reactance is reduced, and the magnetic field distribution is improved. Moreover, the three high-voltage lines 5 arranged on each wiring module 3 are connected to the wire groove 32 in different directions, further disrupting the distribution direction of the high-voltage cables. The opposite cable distribution directions can cancel out the corresponding magnetic fields, greatly reducing the power frequency magnetic field inside the cabinet 1.

[0048] Among them, when the angle is 45°, the maximum cancellation effect can be achieved, and the reduction effect of the power frequency magnetic field is the 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, a containing space is separated by an aluminum partition, 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 can protect the cable. However, it significantly increases the production cost and maintenance difficulty. Therefore, it is optional to entangle and interweave the three high-voltage lines 5 to form a twist shape. In addition to improving the cable strength, it can also make the magnetic fields between the three high-voltage lines 5 cancel each other out, thereby reducing the overall power frequency magnetic field.

[0050] In addition, the present invention also sets an aluminum box 34 and an aluminum plate 7 outside each group of wiring modules 3. The settings of the aluminum box 34 and the aluminum plate 7 can shield magnetic field interference and reduce the influence of the magnetic field in the cable cavity 12 on the components in the signal cavity 11.

[0051] On both sides of the mounting plate 2, there are bus boxes 8 arranged perpendicular to the horizontal plane. The bus boxes 8 are made of aluminum. The wire boxes 6 are slidably connected to the bus boxes 8 and communicate with them. The high-voltage cables are respectively passed through the wire boxes 6 via the bus boxes 8. The bus boxes 8 are fixed on the connecting plate 9. The moving part 4 is located on the side of the wiring module 3, including a moving rack 41 fixed on the wiring module 3 along the vertical direction and a moving gear 42 fixed on the extension section of the connecting plate 9 and used to drive the moving rack 41 to move up and down.

[0052] The movable member 4 further includes a rotating shaft 43 rotatably connected to the extended section of the connecting plate 9, a movable worm gear 44, and a movable worm 45 for driving the rotation of the movable worm gear 44; both the movable worm gear 44 and the movable gear 42 are coaxially fixed on the rotating shaft 43; the movable worm 45 extends outside the connecting plate 9. A sliding groove 91 and a mounting groove 92 are formed on the connecting plate 9, and the connecting module is slidably connected in the sliding groove 91 through a sliding plate 35; the aluminum plate 7 is embedded in the mounting groove 92.

[0053] The bus box 8 is provided to shield the high magnetic field generated by the large bundle of high-voltage wires 5 when the wires are connected to the power distribution cabinet. Therefore, the bus box 8 has a relatively large thickness and can achieve a good shielding effect. Moreover, the spacing between the wires is also an important influencing factor for magnetic field superposition. For high-voltage wires 5 of different sizes, their optimal spacing is different. Therefore, in the present invention, the wiring module 3 is set to be height-adjustable, that is, the spacing can be adjusted according to high-voltage wires 5 of different sizes, so as to achieve the best adjustment effect in a limited space.

[0054] Due to the setting of the movable member 4, the operator can drive the movable worm gear 44 and the movable gear 42 by rotating the movable worm 45 extending from the side, so that the wiring module 3 moves up and down to adjust the spacing, so as to achieve the purpose of reducing the magnetic field superposition effect. In addition, the self-locking property of the worm and worm gear can also make the wiring module 3 stay at any height, which is convenient for the operator to adjust and fix.

[0055] To verify the use effect of the present invention, the present invention conducts a test experiment with two power distribution cabinets of different structures. In the test, the embodiment is the power distribution cabinet of the present invention; in Comparative Example 1, only vertical layered distribution and modular wiring are adopted, and aluminum shielding is not used; Comparative Example 2 is a common power distribution cabinet, which does not adopt vertical layered distribution and modular setting of the wiring module. The number of wires and the wire spacing of the three are the same.

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

[0057] Table 1 Test result table of the embodiment and two comparative examples

[0058] Parameter Embodiment Comparative Example 1 Relative reduction in the embodiment Comparative Example 2 Relative reduction in the embodiment Magnetic field strength (0.1 - 10 MHz) 0.04 mT 0.11 mT 64％ 0.25 mT 84％ Common-mode interference voltage of the signal line 1.2V 4V 70％ 12V 90％ Grounding resistance 1.8 Ω 4.3 Ω 58.1％ 8 Ω 77.5％

[0059] As can be seen from Table 1, in the present invention, by adopting the three methods of vertical layered distribution, modular wiring, and aluminum shielding, and synergistically, compared with the common power distribution cabinet, the magnetic field intensity is reduced by 84%, the common-mode interference voltage of the signal wire is reduced by 90%, and the grounding resistance is reduced by 77.5%, showing a significant reduction. Even in Comparative Example 1 with a lower cost and without aluminum shielding, its effect is significantly better than that of the common power distribution cabinet. Therefore, the present invention has significant advantages in reducing the magnetic field.

[0060] The above are only alternative embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural or equivalent process transformation made by using the content of the specification and drawings of the present invention under the inventive concept of the present invention, or directly or indirectly applied to other related technical fields, shall similarly be included within the patent protection scope of the present invention.

Claims

1. A high-voltage power distribution cabinet with a cable harnessing mechanism, comprising a cabinet body (1), wherein the cabinet body (1) comprises 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 A mounting plate (2) is arranged in the cable cavity (12) perpendicular to a horizontal plane and is movably connected to a rear wall of the cable cavity (12) in a horizontal direction; Wiring modules (3), the array is provided with a plurality of groups, each group of the wiring modules (3) is connected to the mounting plate (2) in a vertical direction via a movable part (4); The wiring module (3) comprises a wiring board (31) and a high-voltage cable, each wiring board (31) is provided with at least one group of wire troughs (32), each group of wire troughs (32) is adapted to two groups of the high-voltage cables, each group of the high-voltage cables comprises three high-voltage wires (5), and the three high-voltage wires (5) are respectively connected to the wire troughs (32) along a vertical direction and in a direction with an angle of 30 to 60 degrees with the vertical line; An aluminum wire box (6) is arranged outside the high-voltage cable, and the three high-voltage wires (5) are arranged in parallel or twisted and interwoven in the wire box (6) to form a twisted shape; Each group of the wiring modules (3) is provided with an aluminum box (34) covering the wiring modules, and an aluminum plate (7) is provided between the mounting plate (2) and the wiring modules (3).

2. A high-voltage power distribution cabinet with a cable harness and cable collection mechanism according to claim 1, characterized in that: The wiring board (31) is provided with a number of wiring clamps (33) corresponding to the number of the wire ducts (32). The wiring clamps (33) are arranged along the vertical direction and in a direction with an angle of 30 to 60 degrees with the vertical line toward the wire duct (32) to clamp the high-voltage wire (5) and determine the extension direction of the high-voltage wire (5).

3. A high-voltage power distribution cabinet with a cable harness and cable collection mechanism according to claim 1, characterized in that: When the high-voltage wires (5) are arranged in parallel in the wire box (6), the wire box (6) is divided into corresponding accommodation spaces by aluminum partitions to accommodate the high-voltage wires (5).

4. A high-voltage power distribution cabinet with a cable harness and cable collection mechanism according to claim 2, characterized in that: Three aluminum wire sleeves (51) are provided in each of the wire boxes (6), one of the high-voltage wires (5) is sleeved in each of the wire sleeves (51), and the wire sleeves (51) are clamped in the wiring clamping seat (33) and extend toward the corresponding wire slot (32).

5. A high-voltage power distribution cabinet with a cable harness and cable collection mechanism according to claim 1, characterized in that: The two side surfaces of the mounting plate (2) are provided with bus boxes (8) arranged perpendicular to the horizontal plane, the bus boxes (8) are made of aluminum, the wire boxes (6) are slidably connected to the bus boxes (8) and communicated with them, and the high-voltage cables are passed through the bus boxes (8) and are distributed in each of the wire boxes (6).

6. A high-voltage power distribution cabinet with a cable harness and cable collection 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 a vertical direction and a movable gear (42) fixed on an extension section of the connecting plate (9) and used to drive the movable rack (41) to rise and fall.

7. A high-voltage power distribution cabinet with a cable harness and cable collection mechanism according to claim 6, characterized in that: The movable member (4) further comprises a rotating shaft (43) rotatably 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 outside the connecting plate (9).

8. A high-voltage power distribution cabinet with a cable harness and cable collection mechanism according to claim 7, characterized in that: A sliding groove (91) and a mounting groove (92) are formed in the connecting plate (9), and the connecting module is slidably connected in the sliding groove (91) through a sliding plate (35); the aluminum plate (7) is embedded in the mounting groove (92).

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

10. A high-voltage power distribution cabinet with a cable harness and cable collection mechanism according to claim 1, characterized in that: The angle at which the high-voltage wire (5) accesses the wire groove (32) is 45°, and the inclination angles of the high-voltage wires (5) on both symmetric sides are the same.

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