Distribution box for reactive power compensation power transmission and wiring method thereof

Abstract

The invention discloses a distribution box for reactive power compensation power transmission and a wiring method thereof, the distribution box comprises a cabinet body and a cabinet door installed in front of the cabinet body, and the upper part of the cabinet door is provided with a secondary element installation area; the wiring assembly is positioned in the secondary element mounting area; the wiring assembly comprises an insulation shielding outer tube, an insulation shielding inner tube and a wire. The number of the insulation shielding inner pipes is multiple, all the insulation shielding inner pipes are fixedly installed in the insulation shielding outer pipe in the axial direction, a wire is arranged in each insulation shielding inner pipe, each wire is erected in the center of the corresponding insulation shielding inner pipe in a suspended mode through a support, and the wires and the support can slide relative to each other. And therefore, the wires can axially move in the corresponding insulation shielding inner pipes. According to the invention, one wire is distributed in each insulation shielding inner tube, the problem of wire disorder does not exist, circuits are easier to sort, the possibility of wiring errors is reduced, meanwhile, later troubleshooting is also facilitated, and the maintenance difficulty is low.

Description

Technical Field

[0001] The invention belongs to the technical field of distribution boxes, and in particular relates to a distribution box used for reactive power compensation power transmission and a wiring method thereof. Background Art

[0002] The distribution box for reactive power compensation transmission is usually called reactive power compensation distribution box, which is used for the exchange of electric field and magnetic field in the circuit, and to establish and maintain the electric power of the magnetic field in the electrical equipment. In the power system, many electrical equipment (such as motors, transformers, etc.) need to consume reactive power during operation. If the reactive power cannot be reasonably compensated, it will lead to problems such as increased current, increased line loss, and decreased voltage quality.

[0003] The conventional reactive power compensation distribution box structure is divided into:

[0004] 1. Primary components (main circuit components, generally with relatively large rated power and large operating current). Main circuit components include main switch (knife-fuse switch, fuse group, circuit breaker), circuit breakers and fuses of various numbers, contactors (compound switches, contactless switches), thermal protection components (thermal relays), filter reactors, power capacitors, etc.

[0005] 2. Secondary components (i.e. control circuit components, with smaller rated power and operating current). Control circuit components include power compensation controller (the core brain of the capacitor cabinet, which is responsible for calculating the power factor and reactive power and other related parameters of the power grid, thereby controlling the contactor or contactless switch to sequentially put the capacitor bank in or out, so that the power factor of the power grid remains within a normal range and ensure the relevant interests of the electricity user), small fuses and display instruments, etc.

[0006] The cabinet door of the distribution box is a side-opening door. Usually the secondary components are installed on the inside of the cabinet door, and the display or indicating parts of the secondary components are exposed on the cabinet door. For example, the display screen part of the power compensation controller, the pointer part of the display instrument, the button knob part of the control key, etc. are all embedded in the mounting holes of the cabinet door to form an exposed structure.

[0007] The primary components are electrically connected with thick copper wires or thick copper sheets, and the secondary components are electrically connected with thinner soft copper wires. The circuits of the secondary components are complex and numerous. The existing reactive power compensation distribution box does not have a dedicated wiring and wiring structure designed for the secondary component circuits. The shortcomings are as follows:

[0008] 1. Since there is no industry implementation standard, the quality of wiring and wiring depends on the experience and personal habits of electrical engineers. Without the constraints of the implementation standard, electrical engineers may arbitrarily wire and arrange the wires for other reasons such as urging the work and convenience. The chaotic wiring and wiring is not only unsightly, but also has a great impact on line combing, wiring and other operations. It is also not conducive to later troubleshooting and increases the difficulty of maintenance.

[0009] 2. The thick copper sheet or copper wire used between the primary components was originally exposed. After being bent into a suitable shape according to the installation position, an insulating heat shrink tube is put on the outside and covered on the outer surface of the copper sheet or copper wire by burning. Most electrical engineers only put insulating heat shrink tubes in the middle of the copper sheet or copper wire, and the ends near the copper sheet or copper wire and the terminal parts are still exposed. Since a large current passing through the exposed copper wire will generate a strong electromagnetic field around it, although the wire of the secondary component has an insulating layer, the shielding performance of the insulating layer is poor, which will cause strong interference to the wire of the secondary component and affect the transmission of electrical signals. This is one of the reasons for the failure of the secondary component control. Summary of the invention

[0010] In view of the deficiencies in the prior art, the present invention provides a distribution box for reactive power compensation transmission, comprising a cabinet body and a cabinet door installed in front of the cabinet body, wherein a secondary component installation area is provided on the upper portion of the cabinet door; and further comprising a wiring assembly located in the secondary component installation area; the wiring assembly comprises an insulating shielding outer tube, an insulating shielding inner tube and a wire; the insulating shielding inner tubes are provided with a plurality of wires, all of which are fixedly installed axially inside the insulating shielding outer tube, a wire is provided inside each insulating shielding inner tube, and each wire is suspended and mounted at the center of the corresponding insulating shielding inner tube through a bracket, and the wire and the bracket can slide relative to each other, thereby allowing the wire to slide inside the corresponding insulating shielding inner tube. Axial movement; the tube wall of each insulating shielding inner tube is provided with through holes distributed along the axial direction, all the through holes are facing the tube wall of the insulating shielding outer tube, and each through hole is directly opposite to the wire inside the corresponding insulating shielding inner tube; the tube wall of the insulating shielding outer tube is provided with wiring holes corresponding to all the through holes, and the aperture of the through holes is equal to that of the wiring holes; it also includes an inverted Y-shaped wiring terminal, the upper end of the wiring terminal is provided with a countersunk hole for wiring, and the width of the lower part of the wiring terminal is not less than the aperture of the wiring hole and the lower part of the wiring terminal can be bent elastically toward the middle opening, and one of the through holes is extended through the lower part of the wiring terminal and the wiring terminal is rotated, so that the wire in the through hole is wrapped around the lower part of the wiring terminal.

[0011] The beneficial effects of the distribution box for reactive power compensation transmission in the present invention are:

[0012] 1. Compared with the existing installation of secondary components, the wiring assembly replaces the existing scattered wire arrangement operation, does not rely on the experience and personal habits of electrical engineers, has high wiring quality, and avoids the influence of other factors on the wiring quality.

[0013] 2. There is one wire in each insulated shielded inner tube, so there is no problem of wire interlacing or confusion. It is easier to sort out the lines, reducing the possibility of wiring errors. It is also conducive to later troubleshooting and has low maintenance difficulty.

[0014] 3. The wiring assembly adopts double-layer shielding technology to effectively isolate the electromagnetic field interference generated by the primary component area, provide a stable environment for the control signal transmission of the secondary component, reduce the probability of control deviation or failure of the secondary component, and improve the protection level of the secondary component.

[0015] Preferably, all the insulating shielding inner tubes are distributed in three layers along the radial direction of the insulating shielding outer tube through the pipe rack, and the insulating shielding inner tubes of each layer are evenly distributed along the circumferential direction, and the three layers of insulating shielding inner tubes are staggered. The through hole of each insulating shielding inner tube may be connected to the shielded insulated wire, and the three layers of insulating shielding inner tubes are staggered to make installation space for the shielded insulated wire. In addition, there are multiple pipe racks, all of which are evenly distributed along the axial direction of the insulating shielding outer tube, and all of which are staggered with the wiring holes; multiple brackets are provided between each insulating shielding inner tube and the corresponding wire, all of which are evenly distributed along the axial direction of the wire, and all of which are staggered with the through hole. Similarly, the pipe rack and the bracket need to be staggered with the through hole and the wiring hole, also in order not to affect the wiring operation of the shielded insulated wire.

[0016] Preferably, both the insulating shielding outer tube and the insulating shielding inner tube are bendable, and a bendable shaping tube is provided inside the insulating shielding outer tube, the shaping tube coincides with the center line of the insulating shielding outer tube, and a bendable shaping iron wire is provided inside the shaping tube; all pipe racks are fixed between the insulating shielding outer tube and the shaping tube. Since the terminal distributions of the secondary component installation area of ​​reactive power compensation distribution boxes of different specifications and types are different, it is necessary to plan the wiring accordingly according to the specific distribution of secondary components. The insulating shielding outer tube and the insulating shielding inner tube are made of flexible insulating materials and can be bent arbitrarily. The iron wire arranged inside the shaping tube can maintain the bent shape after bending, so as to avoid the insulating shielding outer tube and the insulating shielding inner tube from rebounding after bending, and the plastic effect is good.

[0017] Preferably, all wiring holes are provided with detachable hole plugs, and all wires extend from one end of the insulating shielding outer tube, and are electrically connected to the secondary component control wires of the cabinet one by one after extending. The same wire may have a primary connection point or multiple connection points. According to the circuit connection requirements, the appropriate wiring hole can be selected and the hole plug can be removed, which is convenient to operate.

[0018] Preferably, a symbol is provided at the end of each wire, and the outer surfaces of all the hole plugs corresponding to the same guide are provided with the same symbol as the wire. The symbol of the hole plug of each wire corresponding to the wiring hole of the wire is consistent, which has high recognition, reduces the probability of wiring errors, and reduces the difficulty of later line sorting, making it easier to troubleshoot.

[0019] Preferably, the insulating shielding outer tube is suspended and fixed to the inner side of the cabinet door by a tube clamp. Since the insulating shielding outer tube is cylindrical, many wiring holes are distributed on its tube wall, and the wiring operation is not affected after being suspended, and each wiring hole can be wired, and the wiring difficulty is low.

[0020] Preferably, the middle parts of the two branch arms at the lower part of the terminal block are bent outwards respectively, thereby forming a circular space between the two branch arms that fits the wire; the lower end of each branch arm is bent outwards respectively, thereby forming an eight-shaped opening at the lower ends of the two branch arms. The eight-shaped opening at the lower end of the terminal block plays a leading role in the process of the wire being inserted into the circular space, guiding the two branch arms of the terminal block to be inserted from both sides of the wire, and the terminal block can accurately contact the wire after being inserted into the through hole to avoid misalignment.

[0021] The present invention also provides a wiring method for a distribution box for reactive power compensation transmission. Based on the above distribution box for reactive power compensation transmission, the steps are as follows:

[0022] 1. Pre-wire, plan the installation path of the wiring assembly according to the distribution of the secondary component terminals, and the installation path is planned based on the most terminals. Then bend the wiring assembly according to the installation path, and the wire in the shaping tube will keep the bending shape of the wiring assembly after bending, and then suspend the wiring assembly on the side of the cabinet door along the installation path.

[0023] 2. Wiring preparation: Each terminal of the secondary component is equipped with a shielded insulated wire and a terminal. One end of the shielded insulated wire is connected to the terminal, and the other end of the shielded insulated wire is inserted into the blind hole of the corresponding terminal. The outside of the blind hole is squeezed with wire crimping pliers to connect the shielded insulated wire to the terminal.

[0024] 3. Select the wiring position and wiring. For each terminal, select the nearest wiring hole. After removing the hole plug, insert a branch arm of a terminal obliquely into the wiring hole, and then squeeze the other branch arm to reduce the opening amplitude of the terminal and insert it into the wiring hole. Use the same method to insert the terminal into the through hole below. After the lower part of the terminal is inserted into the through hole, the opening of the terminal is stuck on the wire. The terminal continues to move downward, so that the wire slides through the opening of the wire and is stuck in the circular space. Turn the upper end of the terminal exposed to the insulating shielding outer tube so that the wire is wrapped around the lower part of the terminal to complete the connection between the terminal and the wire. Repeat the wiring operation to complete the connection of the remaining terminals in turn. Finally, according to the circuit connection requirements, the wires at the end of the wiring assembly are electrically connected to the secondary component control lines of the cabinet according to the symbols, and the wiring is completed.

[0025] The wiring method of the distribution box for reactive power compensation power transmission in the present invention has the following advantages:

[0026] 1. The wiring terminal is connected to the nearest or closer wiring hole to minimize the length of the shielded insulated wire. The routing of the shielded insulated wire is unique and less dependent on the experience of electrical engineers, effectively solving low-quality wiring problems such as random wiring and staggered wiring.

[0027] 2. After the terminal is inserted into the through hole, it will directly contact the corresponding wire. By turning the terminal 1-3 times, the wire can be wrapped around the lower part of the terminal. The wiring operation is simple and the wiring efficiency is high.

[0028] 3. The insulated shielding outer tube and the insulated shielding inner tube shield the connection points of the wires and the shielded insulated wires inside. After coming out from the terminal leads of the secondary components, they pass through the shielded insulated wires and wires. The signal shielding coverage rate is as high as 98%. Compared with the existing wiring method, the shielding effect of the electromagnetic field is significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a structural schematic diagram of a distribution box used for reactive power compensation power transmission in the present invention;

[0031] Figure 2 A schematic cross-section of the wiring assembly of the present invention Figure 1 ;

[0032] Figure 3 A schematic cross-section of the wiring assembly of the present invention Figure 2 ;

[0033] Figure 4 A three-dimensional diagram of the wiring assembly of the present invention;

[0034] Figure 5 It is a schematic diagram of the structure of the wiring terminal in the present invention;

[0035] Figure 6 for Figure 5 Left view of

[0036] Figure 7 for Figure 5 Stereoscopic image of

[0037] Figure 8 for Figure 2 Schematic diagram after a terminal block is inserted into a wiring hole in the wiring hole;

[0038] Fig. 9 for Figure 8 Schematic diagram of the terminal after one rotation;

[0039] Figure numerals: wiring assembly 1, cabinet body 2, cabinet door 3, secondary component installation area 4, insulating shielding outer tube 5, insulating shielding inner tube 6, wire 7, pipe rack 8, shaping tube 9, iron wire 10, through hole 11, wiring hole 12, bracket 13, hole plug 14, wiring terminal 15, countersunk hole 16, circular space 17, opening 18, secondary component control line 19. DETAILED DESCRIPTION

[0040] In view of the deficiencies in the prior art, the inventor of this case has proposed the technical solution of the present invention after long-term research and extensive practice. The following will further explain the technical solution, its implementation process and principle, etc. in conjunction with the drawings in the embodiments of this application and specific implementation cases.

[0041] It should be noted that the embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention. The described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, the present invention covers any substitution, modification, equivalent method and scheme made on the spirit, principle and scope of the present invention defined by the claims. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In the description of this application, unless otherwise clearly specified and limited, the technical or scientific terms used should have the usual meanings understood by persons with general skills in the field to which this application belongs. Terms such as "install", "connect", and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a conflicting connection, or an integrated connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] Embodiment 1;

[0044] like Figure 1 As shown, the first embodiment provides a distribution box for reactive power compensation transmission, including a wiring assembly 1, a cabinet 2, and a cabinet door 3 installed in front of the cabinet 2, the side of the cabinet door 3 is hinged to the left or right side of the front of the cabinet door 3 through a hinge, and a secondary component installation area 4 is provided on the upper part of the back of the cabinet door 3. Common secondary components include power compensation controllers, voltage display meters, current display meters, etc. The wiring assembly 1 is installed in the secondary component installation area 4, and the wiring assembly 1 is connected between the secondary component of the cabinet door 3 and the secondary component control line 19 of the cabinet 2.

[0045] In order to improve the wiring quality, the wiring assembly 1 in this embodiment replaces the existing control line, and the specific structure is as follows:

[0046] like Figure 2 and Figure 3 As shown, the wiring assembly 1 includes an insulating shielding outer tube 5, an insulating shielding inner tube 6 and a wire 7. The insulating shielding inner tube 6 is provided with a plurality of insulating shielding inner tubes. The specific number of the insulating shielding inner tubes 6 is not limited in this embodiment. The specific number of the insulating shielding inner tubes 6 is determined according to the number of terminals of all secondary components on the cabinet door 3. For example, if there are 48 terminals in total, 48 insulating shielding inner tubes 6 are used, or more than 48 insulating shielding inner tubes 6 can be used, and the remaining insulating shielding inner tubes 6 are used as spares or other control lines. Specifically, the insulating shielding outer tube 5 is suspended and fixed to the inner side of the cabinet door 3 by a pipe clamp. The insulating shielding inner tube 6 is fixedly installed inside the insulating shielding outer tube 5 along the axial direction. Specifically, all the insulating shielding inner tubes 6 are distributed in three layers along the radial direction of the insulating shielding outer tube 5 through a pipe rack 8, and the insulating shielding inner tubes 6 of each layer are evenly distributed along the circumferential direction and the three layers of insulating shielding inner tubes 6 are staggered. The through hole 11 of each insulating shielding inner tube 6 may be connected to the shielding insulated wire, and the three layers of insulating shielding inner tubes 6 are staggered to make room for the installation of the shielding insulated wire. In addition, there are multiple pipe racks 8 , all of which are evenly distributed along the axial direction of the insulating shielding outer tube 5 , and all of which are offset from the wiring holes 12 .

[0047] The terminals of the secondary components may be distributed on a straight line or on a curve. In order to allow the insulating shielding inner tube 6 and the insulating shielding outer tube 5 to bend arbitrarily and maintain the bent shape, the insulating shielding outer tube 5 and the insulating shielding inner tube 6 can be bent. A bendable shaping tube 9 is provided inside the insulating shielding outer tube 5. The shaping tube 9 coincides with the center line of the insulating shielding outer tube 5, and a bendable and shaped iron wire 10 is provided inside the shaping tube 9; all pipe racks 8 are fixed between the insulating shielding outer tube 5 and the shaping tube 9. Due to different specifications and types of reactive power compensation distribution boxes, the distribution of the terminals in the secondary component installation area 4 is different, and the wiring needs to be planned accordingly according to the specific distribution of the secondary components. The insulating shielding outer tube 5 and the insulating shielding inner tube 6 are made of flexible insulating materials and can be bent arbitrarily. The iron wire 10 provided inside the shaping tube 9 can maintain the bent shape after bending, so as to avoid the insulating shielding outer tube 5 and the insulating shielding inner tube 6 from rebounding after bending, and the plastic effect is good.

[0048] like Figure 4 As shown, in this embodiment, a wire 7 is arranged inside each insulating shielding inner tube 6, and each wire 7 is suspended and erected in the center of the corresponding insulating shielding inner tube 6 through a bracket 13, and the wire 7 and the bracket 13 can slide relative to each other, so that the wire 7 can move axially inside the corresponding insulating shielding inner tube 6. The wire 7 can move axially in the insulating shielding inner tube 6, providing a movable space for the wire 7 to be wound around the lower part of the wiring terminal 15. The wall of each insulating shielding inner tube 6 is provided with through holes 11 distributed along the axial direction, all of which face the wall of the insulating shielding outer tube 5, and each through hole 11 is directly opposite to the wire 7 inside the corresponding insulating shielding inner tube 6. The number of through holes 11 is not limited in this embodiment, and the number of through holes 11 can be selected according to the number of wiring terminals 15. Correspondingly, the wall of the insulating shielding outer tube 5 is provided with wiring holes 12 corresponding to all the through holes 11, and the apertures of the through holes 11 and the wiring holes 12 are equal. A plurality of brackets 13 are provided between each insulating shielding inner tube 6 and the corresponding wire 7. The number of brackets 13 is determined according to the length of the wire 7. This embodiment does not impose any restrictions thereon. However, in order to ensure the supporting effect, all brackets 13 need to be evenly distributed along the axial direction of the wire 7, and all brackets 13 are staggered with the through hole 11. For example, a bracket 13 is provided every 5-10 cm. Similarly, the pipe rack 8 and brackets 13 need to be staggered with the through hole 11 and the wiring hole 12, also in order not to affect the wiring operation of the shielded insulated wire. In addition, all wiring holes 12 are provided with detachable hole plugs 14. All wires 7 extend from one end of the insulating shielding outer tube 5, and after extending, they are electrically connected one by one with the secondary component control line 19 of the cabinet 2. The same wire 7 may have a primary connection point or multiple connection points. According to the circuit connection requirements, a suitable wiring hole 12 is selected, and the hole plug 14 can be removed, which is convenient to operate.

[0049] like Figure 5 , Figure 6 and Figure 7 As shown, this embodiment also includes an inverted Y-shaped terminal 15, the upper end of the terminal 15 is provided with a countersunk hole 16 for wiring, and the width of the lower part of the terminal 15 is not less than the aperture of the wiring hole 12, and the lower part of the terminal 15 can be bent toward the middle opening 18 for elastic deformation, and the lower part of the terminal 15 is inserted into one of the through holes 11 and the terminal 15 is rotated, so that the wire 7 in the through hole 11 is wound around the lower part of the terminal 15. Further, the middle parts of the two branch arms at the lower part of the terminal 15 are bent outward respectively, so as to form a circular space 17 adapted to the wire 7 between the two branch arms; the lower end of each branch arm is bent outward respectively, so as to form an eight-shaped opening 18 at the lower ends of the two branch arms. The eight-shaped opening 18 at the lower end of the terminal 15 plays a leading role in the process of the wire 7 being inserted into the circular space 17, guiding the two branch arms of the terminal 15 to be inserted from both sides of the wire 7. After the terminal 15 is inserted into the through hole 11, it can accurately contact the wire 7 to avoid misalignment.

[0050] In order to avoid confusion and errors in wiring, a symbol is provided at the end of each wire 7 in this embodiment, and the outer surfaces of all the hole plugs 14 corresponding to the same guide are provided with the same symbol as the symbol of the wire 7. The symbol of the hole plug 14 of each wire 7 that corresponds to the wiring hole 12 corresponding to the wire 7 is consistent, with high recognition, reducing the probability of wiring errors, and reducing the difficulty of later line combing, making it easier to troubleshoot. For example, if the symbol at the end of one of the wires 7 is A, then all the hole plugs 14 corresponding to the wire 7 are marked in sequence with A1, A2, A3...An, or all standard symbols A. If the end of another wire 7 is B, then all the hole plugs 14 corresponding to the wire 7 are marked in sequence with B1, B2, B3...Bn, or all standard symbols B. According to this method, the other wires 7 are marked in sequence, and the line combing is clear and error-prone.

[0051] In this embodiment, each insulating shielding inner tube 6 is provided with a wire 7, and there is no problem of interlacing or confusion of the wires 7, which makes it easier to sort out the lines, reduces the possibility of wiring errors, and is also conducive to later troubleshooting, and the difficulty of maintenance is low. The wiring assembly 1 adopts double-layer shielding technology to effectively isolate the electromagnetic field interference generated by the primary component area, provide a stable environment for the control signal transmission of the secondary component, reduce the probability of control deviation or failure of the secondary component, and improve the protection level of the secondary component.

[0052] Embodiment 2:

[0053] Embodiment 2 provides a wiring method for a distribution box for reactive power compensation transmission. Based on the distribution box for reactive power compensation transmission of embodiment 1, the method is as follows:

[0054] First, the wiring is required. According to the distribution of the terminals of the secondary components, the installation path of the wiring assembly 1 is planned. The installation path is planned based on the most terminals. Then the wiring assembly 1 is bent according to the installation path. After bending, the wire 10 in the shaping tube 9 maintains the bending shape of the wiring assembly 1. Then, the wiring assembly 1 is suspended and fixed on the side of the cabinet door 3 along the installation path.

[0055] The second step is wiring preparation. Each terminal of the secondary component is equipped with a shielded insulated wire and a terminal 15. One end of the shielded insulated wire is connected to the terminal, and the other end of the shielded insulated wire is inserted into the blind hole of the corresponding terminal 15. The outer side of the blind hole is squeezed by crimping pliers to connect the shielded insulated wire to the terminal 15.

[0056] Finally, select the wiring position and wiring, select the wiring hole 12 that is closer to each wiring terminal 15, and remove the hole plug 14. Figure 8 As shown in the figure, after inserting one branch arm of a terminal 15 obliquely into the wiring hole 12, squeeze the other branch arm to reduce the width of the figure-eight opening 18 of the terminal 15 and then insert it into the wiring hole 12. Use the same method to insert the terminal 15 into the through hole 11 below. After the lower part of the terminal 15 is inserted into the through hole 11, the figure-eight opening 18 of the terminal 15 is stuck on the wire 7. The terminal 15 continues to move downward, so that the wire 7 slides through the figure-eight opening 18 and is stuck in the circular empty space 17, as shown in the figure-eight opening 18 of the terminal 15. Fig. 9 As shown, the upper end of the terminal 15 exposed from the insulating shielding outer tube 5 is rotated so that the wire 7 is wrapped around the lower part of the terminal 15 to complete the connection between the terminal 15 and the wire 7. Repeat the wiring operation to complete the connection of the remaining terminals 15 in sequence. Finally, according to the circuit connection requirements, the wire 7 at the end of the wiring assembly 1 is electrically connected to the secondary element control line 19 of the cabinet 2 according to the symbol, and the wiring is completed.

[0057] Compared with the installation of the existing secondary components, the wiring method of this embodiment uses the wiring assembly 1 to replace the existing scattered wire arrangement operation, does not rely on the experience and personal habits of electrical engineers, has high wiring quality, and avoids the influence of other factors on the wiring quality. In addition, the wiring terminal 15 adopts the principle of proximity to minimize the length of the shielded insulated wire. The routing of the shielded insulated wire is unique, which has little dependence on the experience of electrical engineers and effectively solves the low-quality wiring problems such as random wiring and staggered wiring.

[0058] It should be understood that the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, some simple deductions or substitutions can be made without departing from the concept of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A distribution box for reactive power compensation transmission, comprising a cabinet (2) and a cabinet door (3) installed in front of the cabinet (2), wherein a secondary component installation area (4) is provided on the upper part of the cabinet door (3); Features: It also includes a wiring assembly (1) located in the secondary component installation area (4); the wiring assembly (1) includes an insulating shielding outer tube (5), an insulating shielding inner tube (6) and a wire (7); a plurality of insulating shielding inner tubes (6) are provided, all of which are fixedly installed in the axial direction inside the insulating shielding outer tube (5), and a wire (7) is provided inside each insulating shielding inner tube (6), and each wire (7) is suspended and mounted at the center of the corresponding insulating shielding inner tube (6) through a bracket (13), and the wire (7) and the bracket (13) can slide relative to each other, so that the wire (7) can move axially inside the corresponding insulating shielding inner tube (6); The wall of each insulating shielding inner tube (6) is provided with through holes (11) distributed along the axial direction, all the through holes (11) are oriented toward the wall of the insulating shielding outer tube (5), and each through hole (11) is directly opposite to the wire (7) inside the corresponding insulating shielding inner tube (6); the wall of the insulating shielding outer tube (5) is provided with wiring holes (12) corresponding to all the through holes (11) one by one, and the apertures of the through holes (11) and the wiring holes (12) are equal; The invention also comprises an inverted Y-shaped wiring terminal (15), wherein the upper end of the wiring terminal (15) is provided with a countersunk hole (16) for wiring, and the width of the lower part of the wiring terminal (15) is not less than the hole diameter of the wiring hole (12), and the lower part of the wiring terminal (15) can be bent toward the middle opening (18) to elastically deform, and the lower part of the wiring terminal (15) is extended into one of the through holes (11) and the wiring terminal (15) is rotated, so that the wire (7) in the through hole (11) is wound around the lower part of the wiring terminal (15).

2. A distribution box for reactive power compensation transmission according to claim 1, characterized in that: All the insulating shielding inner tubes (6) are distributed in three layers along the radial direction of the insulating shielding outer tube (5) through the tube rack (8); the insulating shielding inner tubes (6) of each layer are evenly distributed along the circumferential direction and the three layers of insulating shielding inner tubes (6) are staggered.

3. A distribution box for reactive power compensation transmission according to claim 2, characterized in that: The pipe racks (8) are provided in plurality, all of which are evenly distributed along the axial direction of the insulating shielding outer tube (5), and all of which are offset from the wiring holes (12); a plurality of brackets (13) are provided between each insulating shielding inner tube (6) and the corresponding wire (7), all of which are evenly distributed along the axial direction of the wire (7), and all of which are offset from the through holes (11).

4. A distribution box for reactive power compensation transmission according to claim 3, characterized in that: The insulating shielding outer tube (5) and the insulating shielding inner tube (6) are both bendable, a bendable shaping tube (9) is provided inside the insulating shielding outer tube (5), the shaping tube (9) coincides with the center line of the insulating shielding outer tube (5), and a bendable shaping iron wire (10) is provided inside the shaping tube (9); all the pipe racks (8) are fixed between the insulating shielding outer tube (5) and the shaping tube (9).

5. A distribution box for reactive power compensation transmission according to claim 4, characterized in that: All wiring holes (12) are provided with detachable hole plugs (14), and all wires (7) extend from one end of the insulating shielding outer tube (5) and are electrically connected to the secondary element control wires (19) of the cabinet (2) in a one-to-one correspondence after extending.

6. A distribution box for reactive power compensation transmission according to claim 5, characterized in that: The end of each conductor (7) is provided with a symbol, and the outer surfaces of all hole plugs (14) corresponding to the same conductor are provided with a symbol identical to that of the conductor (7).

7. A distribution box for reactive power compensation transmission according to any one of claims 1 to 6, characterized in that: The insulating shielding outer tube (5) is suspended and fixed to the inner side surface of the cabinet door (3) by means of a tube clamp.

8. A distribution box for reactive power compensation transmission according to claim 6, characterized in that: The middle parts of the two branch arms at the bottom of the wiring terminal (15) are bent outwards respectively, thereby forming a circular space (17) between the two branch arms that is compatible with the wire (7); the lower end of each branch arm is bent outwards respectively, thereby forming an eight-shaped opening (18) at the lower ends of the two branch arms.

9. A wiring method for a distribution box for reactive power compensation transmission, characterized in that: Based on the distribution box for reactive power compensation transmission described in claim 8, the steps are as follows: S1. Planning the installation path of the wiring assembly (1) according to the distribution of the wiring posts of the secondary components, wherein the installation path is planned based on the condition that the number of wiring posts passed by the path is the largest; S2, bending the wiring assembly (1) according to the installation path, and after bending, the wire (10) in the shaping tube (9) maintains the bending shape of the wiring assembly (1), and then suspending and fixing the wiring assembly (1) on the side of the cabinet door (3) along the installation path; S3. Each terminal of the secondary element is equipped with a shielded insulated wire and a terminal (15), one end of the shielded insulated wire is connected to the terminal, and the other end of the shielded insulated wire is inserted into the blind hole of the corresponding terminal (15), and the outer side of the blind hole is squeezed by a wire crimping pliers to connect the shielded insulated wire to the terminal (15); S4. Each wiring terminal (15) selects a wiring hole (12) that is closer to it, removes the hole plug (14), and then obliquely inserts one branch arm of a wiring terminal (15) into the wiring hole (12), and then squeezes the other branch arm to reduce the amplitude of the figure-eight opening (18) of the wiring terminal (15) and then inserts it into the wiring hole (12). The wiring terminal (15) is inserted into the through hole (11) below using the same method; S5. After the lower part of the wiring terminal (15) is inserted into the through hole (11), the eight-shaped opening (18) of the wiring terminal (15) is clamped on the wire (7), and the wiring terminal (15) continues to move downward, so that the wire (7) slides through the eight-shaped opening (18) and is clamped in the circular empty space (17), and the upper end of the wiring terminal (15) exposed outside the insulating shielding outer tube (5) is rotated, so that the wire (7) is wrapped around the lower part of the wiring terminal (15), and the connection between the wiring terminal (15) and the wire (7) is completed; S6, repeat S4 and S5 to complete the connection of the remaining wiring terminals (15) in sequence; S7. According to the circuit connection requirements, the wire (7) at the end of the wiring assembly (1) is electrically connected to the secondary element control wire (19) of the cabinet (2) in a one-to-one correspondence according to the symbol, and the wiring is completed.

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