Phase modulation device suitable for power distribution network

Abstract

The invention provides a phase modulation device suitable for a power distribution network, and relates to the technical field of phase modulation. The phase modulation device suitable for the power distribution network comprises a telegraph pole, a fixing structure is installed in the middle of the telegraph pole, a connecting rod is fixedly connected to one side of the fixing structure, two vertical rotating nodes are arranged at the end, away from the fixing structure, of the connecting rod, one vertical rotating node is fixedly connected with the connecting rod, and the other vertical rotating node is fixedly connected with the connecting rod. A telescopic rod is fixedly connected between the two vertical rotating joints, a rotating connecting table is fixedly connected to the ends, away from the connecting rod, of the vertical rotating joints, and a phase modulation box is fixedly connected to one side of the rotating connecting table. The device is composed of a fixing structure, a connecting rod, a rotating node and a phase modulation device, and the fixing device is used for fixing the phase modulation device on an electric pole to achieve a fixing effect; the connecting rod and the rotating node are used for connecting the phase modulation device with the fixing device, and can rotate and stretch out and draw back to adjust the phase modulation device to a proper position.

Description

Technical Field

[0001] The present invention relates to the technical field of phase modulation, and in particular to a phase modulation device suitable for a power distribution network. Background Art

[0002] In the current distribution network line switching project, in order to prevent equipment damage and system failure caused by incorrect line phase sequence connection, it is necessary to check the phase sequence of the two connected lines to ensure the accuracy of the connection phase sequence. In 10 kV and 0.4 kV lines, the line cannot be connected at the switching point due to phase sequence mismatch. To ensure the success of the line switching, it is necessary to adjust the phase sequence of one line at the substation outlet interval, primary and secondary fusion switches, etc. The power outage and implementation are more troublesome. To ensure that the line can be connected at the switching point, a phase adjustment device is required to adjust the phase sequence. The application of this device at the switching point can solve the problem that the line cannot be switched due to asymmetric phase sequence of the two lines.

[0003] The existing phase-shifting boxes are relatively large in size and mass, and distribution network line cutting and modification projects often require high-altitude operations. Engineers need to constantly adjust their positions and fix the wires during climbing and wiring. The work is highly dangerous and cumbersome, and faces many inconveniences, especially in small spaces or high-altitude operations. This inconvenience is particularly prominent and cannot meet the work needs in various complex environments.

[0004] To this end, we have developed a new phase-shifting device suitable for distribution networks. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies of the prior art, the present invention provides a phase adjustment device suitable for a power distribution network, which solves the problem that the existing phase adjustment box cannot be fixed and is inconvenient to move in a small space or high altitude environment.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a phase adjustment device suitable for a power distribution network, comprising a power pole, a fixed structure is installed in the middle of the power pole, a connecting rod is fixedly connected to one side of the fixed structure, and two vertical rotation nodes are arranged at one end of the connecting rod away from the fixed structure, one of the vertical rotation nodes is fixedly connected to the connecting rod, a telescopic rod is fixedly connected between the two vertical rotation nodes, the telescopic end of the telescopic rod is fixedly connected to a horizontal rotation node, the horizontal rotation node is fixedly connected to another vertical rotation node, the vertical rotation node is fixedly connected to a rotating connecting platform at one end away from the connecting rod, and a phase adjustment box is fixedly connected to one side of the rotating connecting platform.

[0009] Through the above technical solution, the telescopic rod adjusts the length of the connecting rod according to the actual situation of the line; the vertical rotation node can rotate 300 degrees to facilitate position adjustment; the horizontal rotation node can rotate 300 degrees to facilitate position adjustment, and the connecting structure connects the phase adjustment device with the fixing device, and can be telescopic, rotated, and folded, so that the phase adjustment device can be easily adjusted to a suitable position.

[0010] Preferably, the fixing structure includes two clamps, a semicircular rubber pad is fixedly connected to the inner side of the clamp, a U-shaped groove and a square groove are provided at one end of the clamp, the U-shaped groove and the square groove are cross-arranged up and down, a first screw is rotatably connected to the inner side of the square groove, and a first fastening nut is threadedly connected to the threaded end of the first screw.

[0011] Through the above technical solution, the screw nut plays the role of fixing the clamp, and the clamp is fixed on the pole; the screw tightens the semicircular rubber pad, and the semicircular rubber pad inside the clamp contacts the pole, which plays an anti-slip role and stably fixes the phase adjustment device on the pole.

[0012] Preferably, the clamp is rotatably connected to a second screw at the middle part of one end away from the first screw, one end of the second screw is slidably connected to another clamp, the through-end of the second screw is threadedly connected to a second fastening nut, the clamp is rotatably connected to a fixing frame at its own end, two fixing columns are provided inside the fixing frame, the two fixing columns are symmetrically arranged, one of the fixing columns is fixedly connected to the fixing frame, and the other fixing column is fixedly connected to a sliding block near one end of the fixing frame, a first sliding groove is provided at the middle part of the inner side of the fixing frame, and the sliding block is meshed and slidably connected with the first sliding groove.

[0013] Through the above technical solution, the slider slides in the first slide groove, and the distance between the two fixing columns can be adjusted to adapt to different diameters of electric poles, thereby improving the versatility and adaptability of the phase adjustment device. The fixing frame is connected to the clamp through the second screw and the second fastening nut, so that the fixing frame can be stably fixed on the electric pole, further enhancing the stability of the phase adjustment device.

[0014] Preferably, a plurality of sliding columns are provided at one end of the two fixed columns close to each other, a spring is provided in the middle of the sliding column, both ends of the plurality of sliding columns are slidably connected with the fixed columns, the through ends of the sliding columns are fixedly connected with limiting plates, the upper and lower ends of the fixed columns are fixedly connected with fixed rotating rods, the fixed rotating rods are rotatably connected with the two ends of the fixed frame, the middle part of the fixed rotating rod is rotatably connected with the clamp, one of the fixed rotating rods is provided with a first limiting sliding groove on both sides of the rotating end of the fixed frame, and the first limiting sliding groove is located at the upper and lower ends of the movable fixed column.

[0015] Through the above technical solution, when the two fixed columns slide in the first sliding groove through the slider to adjust the distance between them to adapt to telephone poles of different diameters, the design of the sliding column enables the fixed columns to maintain a certain elastic connection. In the process of the fixed columns approaching each other, the sliding column slides inside the fixed column, and the spring is compressed, providing a certain buffering effect between the fixed columns, so that the two fixed columns can fit more closely on the surface of the telephone pole.

[0016] Preferably, the vertical rotation node includes two symmetrical connecting columns, a cavity is provided inside the connecting columns, an opening is provided on the surface of the connecting column, the opening is connected to the cavity, an I-shaped cylinder is rotatably connected through the two connecting columns, two ends of the I-shaped cylinder are respectively located inside the two cavities, a second sliding gasket is fixedly connected to the inner wall of the cavity, a first sliding gasket is fixedly connected to the inner side of the I-shaped cylinder, and the first sliding gasket is rotatably connected to the second sliding gasket.

[0017] Through the above technical solution, the I-shaped cylinder design between the two connecting columns enables the vertical rotation node to achieve 300-degree rotation, providing greater flexibility and operating space for the phase adjustment device. The combination of the first sliding gasket and the second sliding gasket between the I-shaped cylinder and the connecting column not only ensures the smooth rotation of the I-shaped cylinder inside the connecting column, but also improves the stability and durability of the rotation node.

[0018] Preferably, the surfaces of both ends of the I-shaped cylinder are rotatably connected to limiting columns, the surfaces of the limiting columns are rotatably connected to bearings, the bearings are fixedly connected to the I-shaped cylinder, the limiting column is fixedly connected to a threaded rod at one end away from the I-shaped cylinder, an internal threaded plate is threadedly connected to the middle part of the threaded rod, the internal threaded plate is fixedly connected to the inner wall of the cavity, and the I-shaped cylinder is fixedly connected to a hexagonal nut at one end away from the limiting column.

[0019] Through the above technical solution, the design of the limit column and the threaded rod allows the rotation angle of the I-shaped cylinder to be limited and locked, thereby ensuring that the phase adjustment device can remain stable after being adjusted to the appropriate position, preventing displacement or loosening in natural environments such as wind and sun. The addition of the bearing further improves the smoothness and stability of the rotation of the limit column, making the rotation operation of the I-shaped cylinder more flexible and convenient.

[0020] Preferably, a sliding cavity is provided inside the telescopic rod, and a plurality of fixed sliding grooves and second limiting sliding grooves are provided on the inner wall of the sliding cavity, and the plurality of fixed sliding grooves and second limiting sliding grooves are arranged in a cross shape. A sliding column is slidably connected through the sliding cavity, and the upper and lower ends of the sliding column are fixedly connected with limiting convex plates, and the limiting convex plates are meshed and slidably connected with the second limiting sliding grooves. Fixed convex plates are fixedly connected on both sides of the sliding column, and the fixed convex plates are meshed and slidably connected with the fixed sliding grooves. A horizontal rotation node is fixedly connected to the through end of the sliding column, and a rotation damping is provided in the middle of the horizontal rotation node.

[0021] Through the above technical scheme, the sliding cavity design inside the telescopic rod and the meshing and sliding connection between the sliding column and the fixed slide groove and the second limit slide groove make it possible to accurately and stably adjust the length of the telescopic rod. At the same time, the meshing of the fixed convex plate and the fixed slide groove further enhances the stability of the telescopic rod to prevent shaking or deviation during the adjustment process. The horizontal rotation node connected to the through-end of the sliding column and its internal rotation damping design enable the horizontal rotation node to rotate flexibly during the rotation process and remain stable at any position, providing strong support for the precise adjustment of the phase adjustment device.

[0022] Preferably, a handle is fixedly connected to the top of the phase-adjusting box, a plurality of wiring holes are arranged on the two side surfaces of the phase-adjusting box, a plurality of line connection copper plates are arranged on the inner side of the phase-adjusting box, joints are fixedly connected on both sides of the line connection copper plates, the joints are slidably connected to the wiring holes, an insulating material is arranged between the plurality of line connection copper plates, a plurality of fixing holes are arranged on the surface of the line connection copper plates, a plurality of fixing holes are slidably connected with fixing rods, and both ends of the fixing rods are fixedly connected to the inner wall of the phase-adjusting box.

[0023] Through the above technical solution, the insulating material on the inner side of the line connection copper plate ensures the safe isolation of the wires and effectively prevents safety accidents caused by short circuits. The combined design of the fixing holes and the fixing rods not only ensures the stability of the line connection copper plate, but also improves the structural strength of the entire phase-shifting box. The function of the phase-shifting device is to adjust each phase of the line on both sides of the line to the corresponding position through this device, so that the lines will not cross, ensuring that the switching plan can be implemented.

[0024] Preferably, the phase-shifting box includes a 4*4 type 0.4 kV phase-shifting box, a 3*3 type 10 kV phase-shifting box and a 3*6 type 10 kV phase-shifting box, the 4*4 type 0.4 kV phase-shifting box is composed of 4 line connection copper plates (803) and each line connection copper plate is provided with 4 joints, the 3*3 type 10 kV phase-shifting box is composed of 3 line connection copper plates and each line connection copper plate is provided with 3 joints, and the 3*6 type 10 kV phase-shifting box is composed of 6 line connection copper plates and each line connection copper plate is provided with 3 joints.

[0025] Through the above technical solution, a variety of phase-shifting boxes are formed. The differences in the number of line connection copper plates and the number of connectors inside each phase-shifting box enable them to meet the adjustment needs of power grids of different scales and complexities.

[0026] (III) Beneficial effects

[0027] The present invention provides a phase adjustment device suitable for a power distribution network, which has the following beneficial effects:

[0028] 1. This phase-adjusting device suitable for distribution network is composed of four parts: a fixed structure, a connecting rod and a rotating node, and a phase-adjusting device. The function of the fixing device is to fix the phase-adjusting device on the pole to play a fixing role; the function of the connecting rod and the rotating node is to connect the phase-adjusting device with the fixing device, and can rotate and retract to adjust the phase-adjusting device to a suitable position.

[0029] 2. This phase-adjusting device is suitable for distribution networks. Line connection copper plates and insulating materials are arranged inside the box, and inlet and outlet holes are arranged. Three line connection copper plates are placed for 10 kV, and each copper plate is provided with 3 inlet holes and 3 outlet holes. Four line connection copper plates are placed for 0.4 kV, and each copper plate is provided with 4 inlet holes and 4 outlet holes. Through the above structure, a 10 kV line is formed in single-circuit connection, double-circuit direct connection, double-circuit cross connection and other connection modes to meet a variety of usage conditions. Therefore, the line to be adjusted is passed through the inlet and outlet holes of the phase-adjusting device, the phase sequence of the lines on both sides is adjusted to the matching position, and the line is cut and modified. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a three-dimensional schematic diagram of the fixing structure of the present invention;

[0032] Figure 3 It is a three-dimensional schematic diagram of the fixing frame structure of the present invention;

[0033] Figure 4 It is a schematic cross-sectional view of the vertical rotation node structure of the present invention;

[0034] Figure 5 It is a half-section schematic diagram of the telescopic rod structure of the present invention;

[0035] Figure 6 It is a partial cross-sectional view of the internal structure of each phase-adjusting box of the present invention;

[0036] Figure 7 Schematic diagram of the copper plates used for 10 kV and 0.4 kV of the present invention;

[0037] Figure 8This is a 10 kV scenario-1 pole and line connection diagram of the present invention;

[0038] Fig. 9 This is a wiring diagram for a 10 kV scenario of the present invention;

[0039] Fig.10 This is the pole and line connection diagram for the 10 kV scenario 2 of the present invention;

[0040] Fig.11 This is the 10 kV scenario 2 wiring diagram of the present invention;

[0041] Fig.12 This is a three-pole and line connection diagram for a 10 kV scenario of the present invention;

[0042] Fig.13 This is the 10 kV scenario three-wire diagram of the present invention;

[0043] Fig.14 This is a four-pole and line connection diagram for a 10 kV scenario of the present invention;

[0044] Fig.15 This is the 10 kV scenario four-wiring diagram of the present invention;

[0045] Fig.16 A five-pole and line connection diagram for a 10 kV scenario of the present invention;

[0046] Fig.17 This is the 10 kV scenario five wiring diagram of the present invention;

[0047] Fig.18 This is a six-pole and line connection diagram for a 10 kV scenario of the present invention;

[0048] Fig.19 It is the six-wiring diagram of the 10 kV scenario of the present invention;

[0049] Fig. 20 This is a pole and line connection diagram for a 0.4 kV scenario of the present invention;

[0050] Fig.21 This is a wiring diagram for 0.4 kV scenario 1 of the present invention;

[0051] Fig. 22 This is the pole and line connection diagram for the 0.4 kV scenario 2 of the present invention;

[0052] Fig.23 This is the wiring diagram for 0.4 kV scenario 2 of the present invention.

[0053] Among them, 1. electric pole; 2. fixed structure; 201. clamp; 202. semicircular rubber pad; 203. first fastening nut; 204. first screw; 205. U-shaped groove; 206. square groove; 207. second screw; 208. fixed frame; 209. second fastening nut; 210. first slide groove; 211. limit plate; 212. first limit slide groove; 213. fixed rotating rod; 214. slider; 215. fixed column; 216. spring; 217. slide column; 3. connecting rod; 4. vertical rotation node; 401. connecting column; 402. opening; 403. cavity; 404. first sliding pad Plate; 405, I-shaped cylinder; 406, threaded rod; 407, hexagonal nut; 408, bearing; 409, second sliding gasket; 410, limit column; 411, internal thread plate; 5, telescopic rod; 501, sliding cavity; 502, fixed slide groove; 503, second limit slide groove; 504, limit convex plate; 505, sliding column; 506, fixed convex plate; 6, horizontal rotation node; 601, rotation damping; 7, rotation connection table; 8, phase adjustment box; 801, wiring hole; 802, fixing hole; 803, line connection copper plate; 804, joint; 805, insulating material; 806, fixing rod; 9, handle. DETAILED DESCRIPTION

[0054] 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.

[0055] Embodiment 1:

[0056] like Figures 1 to 17 As shown, a phase adjustment device suitable for a power distribution network comprises a power pole 1, a fixed structure 2 is installed in the middle of the power pole 1, a connecting rod 3 is fixedly connected to one side of the fixed structure 2, two vertical rotation nodes 4 are arranged at one end of the connecting rod 3 away from the fixed structure 2, one of the vertical rotation nodes 4 is fixedly connected to the connecting rod 3, a telescopic rod 5 is fixedly connected between the two vertical rotation nodes 4, the telescopic end of the telescopic rod 5 is fixedly connected to a horizontal rotation node 6, the horizontal rotation node 6 is fixedly connected to another vertical rotation node 4, a rotating connecting platform 7 is fixedly connected to one end of the vertical rotation node 4 away from the connecting rod 3, a phase adjustment box 8 is fixedly connected to one side of the rotating connecting platform 7, and the phase adjustment device can be adjusted to a suitable position for easy operation by operators.

[0057] like Figure 2As shown, the fixing structure 2 includes two clamps 201, a semicircular rubber pad 202 is fixedly connected to the inner side of the clamp 201, a U-shaped groove 205 and a square groove 206 are arranged at one end of the clamp 201, the U-shaped groove 205 and the square groove 206 are arranged crosswise up and down, a first screw rod 204 is rotatably connected to the inner side of the square groove 206, and a first fastening nut 203 is threadedly connected to the threaded end of the first screw 204, and the first screw 204 and the second screw 207 are rotated to fasten using the first fastening nut 203 and the second fastening nut 209.

[0058] like Figure 2 As shown, the clamp 201 is rotatably connected to the middle part of one end away from the first screw 204 with the second screw 207, one end of the second screw 207 is slidably connected to the other clamp 201, the second screw 207 is threadedly connected to the second fastening nut 209 at the through end, and the clamp 201 is rotatably connected to the fixing frame 208 at this end, and two fixing columns 215 are arranged inside the fixing frame 208, and the two fixing columns 215 are symmetrically arranged, one of which is fixedly connected to the fixing frame 208, and the other fixing column 215 is fixedly connected to the slider 214 near one end of the fixing frame 208, and the first slide groove 210 is arranged in the middle part of the inner side of the fixing frame 208, and the slider 214 is meshed and slidably connected with the first slide groove 210, and the arrangement of the semicircular rubber pad 202 can effectively increase the friction between the clamp 201 and the pole 1, and enhance the stability of the fixation.

[0059] like Figure 3 As shown, a plurality of sliding columns 217 are arranged near one end of two fixed columns 215, a spring 216 is arranged in the middle of the sliding column 217, both ends of the plurality of sliding columns 217 are slidably connected with the fixed columns 215, the through ends of the sliding columns 217 are fixedly connected with the limiting plates 211, the upper and lower ends of the fixed columns 215 are fixedly connected with fixed rotating rods 213, the fixed rotating rods 213 are rotatably connected with both ends of the fixed frame 208, the middle part of the fixed rotating rod 213 is rotatably connected with the clamp 201, one of the fixed rotating rods 213 is provided with first limiting sliding grooves 212 on both sides of the rotating end of the fixed frame 208, the first limiting sliding grooves 212 are located at the upper and lower ends of the movable fixed columns 215, the design of the fixed frame 208 and the fixed column 215 in the fixed structure 2 allows the distance between the clamps 201 of the fixed structure 2 to be adjusted when necessary to adapt to the electric poles 1 of different diameters.

[0060] like Figure 4As shown, the vertical rotation node 4 includes two symmetrical connecting columns 401, a cavity 403 is arranged inside the connecting column 401, an opening 402 is arranged on the surface of the connecting column 401, the opening 402 is connected with the cavity 403, an I-shaped cylinder 405 is rotatably connected through the two connecting columns 401, both ends of the I-shaped cylinder 405 are respectively located inside the two cavities 403, a second sliding gasket 409 is fixedly connected to the inner wall of the cavity 403, a first sliding gasket 404 is fixedly connected to the inner side of the I-shaped cylinder 405, the first sliding gasket 404 is rotatably connected to the second sliding gasket 409, and the combination of the I-shaped cylinder 405, the limiting column 410 and the threaded rod 406 in the vertical rotation node 4 ensures the stability and controllability of the rotation.

[0061] like Figure 4 As shown, the surfaces of both ends of the I-shaped cylinder 405 are rotatably connected to the limiting columns 410, and the surfaces of the limiting columns 410 are rotatably connected to bearings 408, and the bearings 408 are fixedly connected to the I-shaped cylinder 405. The limiting column 410 is fixedly connected to a threaded rod 406 at one end away from the I-shaped cylinder 405, and an internal threaded plate 411 is threadedly connected to the middle part of the threaded rod 406, and the internal threaded plate 411 is fixedly connected to the inner wall of the cavity 403. The I-shaped cylinder 405 is fixedly connected to a hexagonal nut 407 at one end away from the limiting column 410. By rotating the hexagonal nut 407, the position of the limiting column 410 can be adjusted, thereby adjusting the damping and angle range of the vertical rotation.

[0062] like Figure 5 As shown, a sliding cavity 501 is arranged inside the telescopic rod 5, and a plurality of fixed sliding grooves 502 and second limiting sliding grooves 503 are arranged on the inner wall of the sliding cavity 501. The plurality of fixed sliding grooves 502 and second limiting sliding grooves 503 are arranged in a cross shape. A sliding column 505 is slidably connected through the sliding cavity 501. The upper and lower ends of the sliding column 505 are fixedly connected with limiting convex plates 504. The limiting convex plates 504 are meshed and slidably connected with the second limiting sliding groove 503. Fixed convex plates 506 are fixedly connected on both sides of the sliding column 505. The fixed convex plates 506 are meshed and slidably connected with the fixed sliding groove 502. A horizontal rotation node 6 is fixedly connected to the through end of the sliding column 505, and a rotation damper 601 is arranged in the middle of the horizontal rotation node 6.

[0063] like Figure 6As shown, a handle 9 is fixedly connected to the top of the phase-adjusting box 8, a plurality of wiring holes 801 are arranged on the surfaces of both sides of the phase-adjusting box 8, a plurality of line connection copper plates 803 are arranged on the inner side of the phase-adjusting box 8, joints 804 are fixedly connected to both sides of the line connection copper plates 803, the joints 804 are slidably connected to the wiring holes 801, an insulating material 805 is arranged between the plurality of line connection copper plates 803, a plurality of fixing holes 802 are arranged on the surface of the line connection copper plates 803, a plurality of fixing holes 802 are slidably connected to fixing rods 806, both ends of the fixing rods 806 are fixedly connected to the inner wall of the phase-adjusting box 8, and the wiring holes 801 on both sides of the phase-adjusting box 8 allow the wires to be easily connected and connected, which is convenient for power distribution. The phase-shifting work of the network is facilitated. The phase-shifting box 8 is divided into a single-circuit 10 kV line, a double-circuit connected line 10 kV line and a 0.4 kV line. The single-circuit 10 kV phase-shifting box 8 is composed of 3 line connection copper plates 803, and each line connection copper plate 803 is provided with 6 joints 804; the double-circuit connected line 10 kV line phase-shifting box 8 is composed of two single-circuit 10 kV phase-shifting boxes, the double-circuit cross-connected 10 kV phase-shifting box 8 is composed of 6 line connection copper plates 803, and each line connection copper plate 803 is provided with 6 joints 804, and the 0.4 kV line phase-shifting box 8 is composed of 4 line connection copper plates 803, and each line connection copper plate 803 is provided with 6 joints 804.

[0064] The phase-shifting box 8 includes a 4*4 type 0.4 kV phase-shifting box 807, a 3*3 type 10 kV phase-shifting box 808 and a 3*6 type 10 kV phase-shifting box 809. The 4*4 type 0.4 kV phase-shifting box 807 consists of 4 line-connecting copper plates 803 and each line-connecting copper plate 803 is provided with 4 joints 804. The 3*3 type 10 kV phase-shifting box 808 consists of 3 line-connecting copper plates 803 and each line-connecting copper plate 803 is provided with 3 joints 804. The 3*6 type 10 kV phase-shifting box 809 consists of 6 line-connecting copper plates 803 and each line-connecting copper plate 803 is provided with 3 joints 804.

[0065] Embodiment 2:

[0066] The specific use scenarios of the phase shifting box in the switching of 10 kV double-circuit lines on the same pole and single-pole lines and 0.4 kV single-trunk lines are as follows:

[0067] 10 kV scenario 1: Single-pole line T-connection change, such as Figure 8 As shown;

[0068] Specific connection method: Fig. 9 As shown, line ABC enters the phase-adjusting box 8, and the three-phase lines ABC are respectively connected to three line connection copper plates 803, so that the three lines on the upper and lower sides can be connected without cross connection.

[0069] 10 kV scenario 2: Single-pole line connection on both sides, such as Fig.10 As shown;

[0070] Specific connection method: Fig.11 As shown, line ABC enters the phase-adjusting box 8, and the three-phase lines ABC are respectively connected to three line connection copper plates 803, so that the three lines on the left and right sides can be connected without cross connection.

[0071] 10kV scenario 3: Two straight lines connected on the same pole, such as Fig.12 As shown;

[0072] A phase adjustment device is added on both the north and south sides to correctly adjust the phase sequence of the double-circuit lines and connect them.

[0073] North side connection Fig.13 As shown in the upper half, the three-phase lines of line CAB entering the phase-adjusting box 8 are respectively connected to three line connection copper plates 803 to realize the connection of three lines on this side.

[0074] South side connection Fig.13 As shown in the lower half, line ABC enters the phase-adjusting box 8, and the three-phase lines ABC are respectively connected to three line connection copper plates 803 to realize the connection of three lines on this side.

[0075] 10kV scenario 4: Two lines connected on the same pole with double-circuit angles, such as Fig.14 As shown;

[0076] A phase adjustment device is added on both the north and south sides to correctly adjust the phase sequence of the double-circuit lines and connect them.

[0077] Left side connection Fig.15 As shown in the upper part, the left line CAB enters the phase-shifting box 8, and the three-phase lines of CAB are respectively connected to the three line connection copper plates 803 to realize the connection of the three lines on this side.

[0078] The right side connection is as follows Fig.15 As shown in the lower half, the right connecting line CBA enters the phase-adjusting box 8, and the three-phase lines of CBA are respectively connected to the three line connection copper plates 803 to realize the connection of the three lines on this side.

[0079] 10 kV scenario 5: Double-circuit straight-line lines on the same pole are cross-connected, such as Fig.16 As shown;

[0080] The specific connection method is to set 6 circuit connection copper plates 803 inside the phase adjustment box, and connect them as follows Fig.17 As shown, the sizes of the six copper plates 803 are adjusted and integrated into a phase adjustment device to connect the left end on the north side with the right end on the south side, and the left end on the south side with the right end on the north side.

[0081] 10 kV scenario 6: Double-circuit angle line cross connection on the same pole, such as Fig.18 As shown;

[0082] Specific connection method: Fig.19 As shown, the principle is the same as that of scenario 5, which connects the left end of the north side with the right end of the south side, and the left end of the south side with the right end of the north side.

[0083] 0.4 kV scenario 1: Single-pole line down-connection phase change, such as Fig. 20 As shown;

[0084] Specific connection method: Fig.21 As shown, the upper line ABCN enters the phase-adjusting box 8, and the four-phase lines of ABCN are respectively connected to the four line connection copper plates 803, so that the four lines on the upper and lower sides can be connected without cross connection.

[0085] 0.4 kV scenario 2: Single-pole line connection on both sides, such as Fig. 22 As shown;

[0086] Specific connection method: Fig.23 As shown, the right line ABCN enters the phase-adjusting box 8, and the four-phase lines of ABCN are respectively connected to the four line connection copper plates 803, so that the four lines on the left and right sides can be connected without cross connection.

[0087] Working principle:

[0088] In practical application, the phase adjustment device firstly fixes and installs the electric pole 1 through the fixing structure 2. Specifically, two clamps 201 are respectively placed on both sides of the electric pole 1, and the clamps 201 are tightly fitted to the electric pole 1 by rotating the first screw 204 and the second screw 207, and tightening them with the first fastening nut 203 and the second fastening nut 209, so as to complete the fixation. The setting of the semicircular rubber pad 202 can effectively increase the friction between the clamp 201 and the electric pole 1, and enhance the stability of the fixation. At the same time, the fixing frame in the fixing structure 2 The design of the fixing column 208 and the fixing column 215 allows the distance between the clamp 201 of the fixing structure 2 to be adjusted when necessary to adapt to the electric poles 1 of different diameters. The phase adjustment box 8 can be freely rotated in the vertical direction through the connecting rod 3 and the vertical rotation node 4. The combination of the I-shaped cylinder 405, the limiting column 410 and the threaded rod 406 in the vertical rotation node 4 ensures the stability and controllability of the rotation. The position of the limiting column 410 can be adjusted by rotating the hexagonal nut 407, thereby adjusting the damping and angle range of the vertical rotation. The telescopic rod 5 and The design of the horizontal rotation node 6 allows the phase-adjusting box 8 to be telescopic and rotatable in the horizontal direction. The sliding of the sliding column 505 in the sliding cavity 501, as well as the constraints of the fixed slide groove 502 and the second limit slide groove 503, ensure the stable telescopic extension of the telescopic rod 5, and the rotation damping 601 in the horizontal rotation node 6 can adjust the damping of the horizontal rotation as needed to meet the operation requirements in different situations. The line to be adjusted passes through the inlet and outlet holes of the phase-adjusting box 8, and the phase sequence of the lines on both sides is adjusted to a matching position for placing the line connection copper plate 803 and the insulator Insulation material 805 is used, and joints 804 are provided. Multiple line connection copper plates 803 are placed at 10 kV. Multiple joints 804 are provided on each copper plate to connect one side of the line to the line connection copper plate 803 through the joint 804. After the line on one side is connected, it is adjusted to the position corresponding to the line on the other side through the line connection copper plate 803, and the line is output through the wiring hole 801. The phase-adjusting box 8 is provided with a fixing rod 806 to facilitate the fixing of the copper plate. Insulating material 805 is filled in the phase-adjusting box 8 to prevent short circuit between the line connection copper plates 803, thereby ensuring that the switching plan can be implemented.

[0089] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A phase adjustment device suitable for a power distribution network, comprising a power pole (1), characterized in that: A fixed structure (2) is installed in the middle of the electric pole (1), a connecting rod (3) is fixedly connected to one side of the fixed structure (2), two vertical rotation nodes (4) are arranged at one end of the connecting rod (3) away from the fixed structure (2), one of the vertical rotation nodes (4) is fixedly connected to the connecting rod (3), a telescopic rod (5) is fixedly connected between the two vertical rotation nodes (4), the telescopic end of the telescopic rod (5) is fixedly connected to a horizontal rotation node (6), the horizontal rotation node (6) is fixedly connected to another vertical rotation node (4), the vertical rotation node (4) is fixedly connected to a rotating connection platform (7) at one end away from the connecting rod (3), and a phase adjustment box (8) is fixedly connected to one side of the rotating connection platform (7).

2. A phase modulation device suitable for a power distribution network according to claim 1, characterized in that: The fixing structure (2) comprises two clamps (201), a semicircular rubber pad (202) is fixedly connected to the inner side of the clamp (201), a U-shaped groove (205) and a square groove (206) are arranged at one end of the clamp (201), the U-shaped groove (205) and the square groove (206) are arranged crosswise up and down, a first screw rod (204) is rotatably connected to the inner side of the square groove (206), and a first fastening nut (203) is threadedly connected to the threaded end of the first screw rod (204).

3. A phase modulation device suitable for a power distribution network according to claim 2, characterized in that: A second screw rod (207) is rotatably connected to the middle of one end of the clamp (201) away from the first screw rod (204); one end of the second screw rod (207) is slidably connected to another clamp (201); a second fastening nut (209) is threadedly connected to the through end of the second screw rod (207); and the clamp (201) is rotatably connected to a fixing frame (208) at its own end.

4. A phase modulation device suitable for a power distribution network according to claim 3, characterized in that: Two fixing columns (215) are arranged inside the fixing frame (208), and the two fixing columns (215) are symmetrically arranged, one of the fixing columns (215) is fixedly connected to the fixing frame (208), and the other fixing column (215) is fixedly connected to a sliding block (214) near one end of the fixing frame (208), and a first sliding groove (210) is arranged in the middle of the inner side of the fixing frame (208), and the sliding block (214) is meshed and slidably connected with the first sliding groove (210).

5. A phase modulation device suitable for a power distribution network according to claim 4, characterized in that: A plurality of sliding columns (217) are arranged near one end of the two fixed columns (215), a spring (216) is arranged in the middle of the sliding column (217), both ends of the plurality of sliding columns (217) are slidably connected with the fixed columns (215), the through ends of the sliding columns (217) are fixedly connected with the limiting plates (211), the upper and lower ends of the fixed columns (215) are fixedly connected with fixed rotating rods (213), the fixed rotating rods (213) are rotatably connected with the two ends of the fixed frame (208), the middle part of the fixed rotating rod (213) is rotatably connected with the clamp (201), one of the fixed rotating rods (213) is provided with first limiting sliding grooves (212) on both sides of the rotating ends of the fixed frame (208), and the first limiting sliding grooves (212) are located at the upper and lower ends of the movable fixed column (215).

6. A phase modulation device suitable for a power distribution network according to claim 1, characterized in that: The vertical rotation node (4) comprises two symmetrical connecting columns (401), wherein a cavity (403) is arranged inside the connecting column (401), and an opening (402) is arranged on the surface of the connecting column (401), wherein the opening (402) is communicated with the cavity (403), and an I-shaped cylinder (405) is rotatably connected through the two connecting columns (401), wherein two ends of the I-shaped cylinder (405) are respectively located inside the two cavities (403), and a second sliding gasket (409) is fixedly connected to the inner wall of the cavity (403), and a first sliding gasket (404) is fixedly connected to the inner side of the I-shaped cylinder (405), and the first sliding gasket (404) is rotatably connected to the second sliding gasket (409).

7. A phase modulation device suitable for a power distribution network according to claim 6, characterized in that: The surfaces of both ends of the I-shaped cylinder (405) are rotatably connected to the limiting columns (410), the surfaces of the limiting columns (410) are rotatably connected to bearings (408), the bearings (408) are fixedly connected to the I-shaped cylinder (405), one end of the limiting column (410) away from the I-shaped cylinder (405) is fixedly connected to a threaded rod (406), the middle part of the threaded rod (406) is threadedly connected to an internal threaded plate (411), the internal threaded plate (411) is fixedly connected to the inner wall of the cavity (403), and one end of the I-shaped cylinder (405) away from the limiting column (410) is fixedly connected to a hexagonal nut (407).

8. A phase modulation device suitable for a power distribution network according to claim 1, characterized in that: The telescopic rod (5) is provided with a sliding cavity (501) inside, and the inner wall of the sliding cavity (501) is provided with a plurality of fixed sliding grooves (502) and second limiting sliding grooves (503), and the plurality of fixed sliding grooves (502) and second limiting sliding grooves (503) are arranged in a cross-shaped manner. A sliding column (505) is slidably connected to the inside of the sliding cavity (501), and the upper and lower ends of the sliding column (505) are fixedly connected to limiting convex plates (504), and the limiting convex plates (504) are meshed and slidably connected to the second limiting sliding grooves (503).

9. A phase modulation device suitable for a power distribution network according to claim 8, characterized in that: The sliding column (505) is fixedly connected with fixed convex plates (506) on both sides, and the fixed convex plates (506) are meshed and slidably connected with the fixed sliding groove (502). The through end of the sliding column (505) is fixedly connected with a horizontal rotation node (6), and a rotation damper (601) is arranged in the middle of the horizontal rotation node (6).

10. A phase modulation device suitable for a power distribution network according to claim 1, characterized in that: A handle (9) is fixedly connected to the top of the phase-adjusting box (8), a plurality of wiring holes (801) are arranged on the surfaces of both sides of the phase-adjusting box (8), a plurality of circuit connection copper plates (803) are arranged on the inner side of the phase-adjusting box (8), joints (804) are fixedly connected to both sides of the circuit connection copper plates (803), the joints (804) are slidably connected to the wiring holes (801), an insulating material (805) is arranged between the plurality of circuit connection copper plates (803), a plurality of fixing holes (802) are arranged on the surface of the circuit connection copper plates (803), a plurality of fixing holes (802) are slidably connected to fixing rods (806), and both ends of the fixing rods (806) are fixedly connected to the inner wall of the phase-adjusting box (8).

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