Duplex single-hanging-point V-shaped suspension string of disc-shaped suspension insulator

Abstract

The utility model discloses a disc-shaped suspension insulator duplex single-hanging-point V-shaped suspension string which comprises a spacing frame, the spacing frame is provided with a fast-assembly mechanism, the top of the spacing frame is provided with two V-shaped disc-shaped insulator strings, the outer sides of the two disc-shaped insulator strings are provided with a voltage-sharing mechanism, the fast-assembly mechanism comprises a support frame, and the support frame is provided with a fixed support. A plurality of wire seats are arranged on the outer side of the supporting frame, a connecting seat is fixedly connected to one end of each wire seat, a movable cover is rotationally connected to each connecting seat, and an embedded clamping block is fixedly connected to the end of each movable cover. According to the disc-shaped suspension insulator duplex single-hanging-point V-shaped suspension string, wires are placed on the wire base, the movable cover is rotated, so that the magnetic embedded clamping block at the end of the movable cover is inserted into the wire base, then the rotating head is rotated to press the embedded clamping block, and then the rotating head is pressed inwards for locking, so that the multiple wires are rapidly installed at the same time, and the installation efficiency is improved. And the installation efficiency and convenience are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, specifically to a disc-type suspension insulator double-connected single-point V-type suspension string. Background Technology

[0002] The disc-type suspension insulator double-connection single-suspension point V-type suspension string is an important structure in overhead transmission lines used to support conductors and limit wind deflection. The double-connection structure distributes the load, reduces the stress on a single string, and lowers the risk of disconnection. For example, in 220kV and above lines, the double-connection single-suspension point can replace the traditional single-suspension point double-connection suspension string, improving safety redundancy. The V-shaped arrangement balances wind load and mechanical strength through angle adjustment, preventing the insulator string from becoming loose or dislodged under pressure. In the existing technology, when installing the disc-type suspension insulator double-connection single-suspension point V-type suspension string with conductor groups, workers need to install multiple conductors one by one using bolts, which makes the installation efficiency and convenience less than ideal. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a disc-type suspension insulator double-connected single-point V-type suspension string, which solves the problem that when installing a conductor group with a disc-type suspension insulator double-connected single-point V-type suspension string, workers need to install multiple conductors one by one using bolts, which makes the installation efficiency and convenience less than ideal.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: a double-connected single-hanging-point V-shaped suspension string of disc-shaped suspension insulators, including a spacer frame, a quick-installation mechanism on the spacer frame, two V-shaped disc-shaped insulator strings on the top of the spacer frame, and a voltage equalization mechanism on the outer side of the two disc-shaped insulator strings;

[0005] The quick-assembly mechanism includes a support frame with multiple wire seats on its outer side. Each wire seat has a connecting seat fixedly connected to one end. A movable cover is rotatably connected to the connecting seat. An embedded locking block is fixedly connected to the end of the movable cover. A pressure block is rotatably connected inside the wire seat. A rotating shaft is fixedly connected to the end of the pressure block. A steel wire rope is mounted on the rotating shaft. A tensioning shaft is fixedly connected to one end of each steel wire rope. A D-shaped groove is opened inside the tensioning shaft. A D-shaped rod is slidably connected inside the D-shaped groove. A rotating head is fixedly connected to the end of the D-shaped rod. A limit block is fixedly connected to the rotating head. An elastic locking block is fixedly connected to the limit block.

[0006] Preferably, the support frame is fixedly installed on the spacer, and one end of each of the multiple wire seats is rotatably connected to the movable cover via a connecting seat, so that the movable cover can rotate around the connecting seat as the center.

[0007] Preferably, the cross-sectional shape of the embedded card block is set to L-shape, and a magnet block is fixedly connected inside the embedded card block, so that after the embedded card block is inserted into the wire seat, it can be initially magnetically attracted and fixed by the magnet block.

[0008] Preferably, the bottom end of the pressure block is rotatably connected to the inner wall of the wire seat via a rotating shaft, and the top end of the pressure block is set as a free end, so that the pressure block can rotate around the rotating shaft.

[0009] Preferably, the two ends of the wire rope are fixedly connected to the tensioning shaft and the rotating shaft respectively, and the tensioning shaft is rotatably connected to the inner wall of the support frame, so that the tensioning shaft can drive multiple rotating shafts to rotate synchronously through the wire rope, thereby simultaneously locking multiple conductor seats.

[0010] Preferably, a limiting groove is provided on the inner wall of the support frame, and the limiting groove matches the limiting block, so that the limiting block can limit the rotating head and prevent it from rotating.

[0011] Preferably, the equalizing mechanism includes an equalizing ring, a locking seat on the equalizing ring, the equalizing ring being disposed on the outside of the disc insulator string, and a mounting hole on the locking seat, with a mounting bolt inside the mounting hole, which can play a good role in equalizing pressure.

[0012] This utility model provides a disc-shaped suspension insulator with a double-connected single-point V-type suspension string. Compared with the prior art, it has the following advantages:

[0013] 1. This disc-shaped suspension insulator double-connected single-point V-type suspension string allows for the rapid installation of multiple conductors simultaneously by placing the conductor on the conductor seat, rotating the movable cover to insert the magnetically attached insert block at the end of the cover into the conductor seat, rotating the rotating head to press the insert block, and then pressing the rotating head inward to lock it. This effectively improves installation efficiency and convenience.

[0014] 2. This disc-shaped suspension insulator double-connected single-point V-shaped suspension string uses mounting bolts screwed into the mounting holes and locking seats to lock the equalizing ring on the outside of the disc-shaped insulator string. The equalizing ring evenly distributes the high voltage around the object, ensuring that there is no potential difference between the different parts of the ring, thereby achieving the effect of equalizing voltage and playing a very good role in equalizing voltage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the quick-assembly mechanism of this utility model.

[0017] Figure 3 This is a schematic diagram of the connection structure between the rotating head and multiple pressure blocks of this utility model.

[0018] Figure 4 This is a schematic diagram of the pressure equalization mechanism of this utility model.

[0019] In the diagram: 1. Spacer; 2. Quick-installation mechanism; 201. Support frame; 202. Conductor seat; 203. Connecting seat; 204. Movable cover; 205. Embedded locking block; 206. Pressure block; 207. Wire rope; 208. Tensioning shaft; 209. D-groove; 210. D-rod; 211. Rotating head; 212. Limiting block; 213. Elastic locking block; 3. Disc insulator string; 4. Equalizing mechanism; 401. Equalizing ring; 402. Locking seat; 403. Mounting hole; 404. Mounting bolt. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-3 This utility model provides a technical solution: a double-connected single-suspension point V-shaped suspension string of disc-shaped suspension insulators, including a spacer 1, a quick-installation mechanism 2 on the spacer 1, two V-shaped disc-shaped insulator strings 3 on the top of the spacer 1, and an equalizing mechanism 4 on the outside of the two disc-shaped insulator strings 3. Multiple conductors can be quickly installed at the same time through the quick-installation mechanism 2, which effectively improves the installation efficiency and convenience.

[0022] The quick-installation mechanism 2 includes a support frame 201. Multiple wire seats 202 are provided on the outer side of the support frame 201. These wire seats 202 are evenly fixed on the spacer frame 1, facilitating the installation of multiple wires. Each wire seat 202 has a connecting seat 203 fixedly connected to one end. A movable cover 204 is rotatably connected to the connecting seat 203. The support frame 201 is fixedly installed on the spacer frame 1. Each end of the multiple wire seats 202 is rotatably connected to the movable cover 204 via the connecting seat 203, allowing the movable cover 204 to rotate around the connecting seat 203. The movable cover 204 is rotated, and an embedded locking block 205 is fixedly connected to its end. The embedded locking block 205 has an L-shaped cross-section, and a magnet is fixedly connected inside the embedded locking block 205. This allows the embedded locking block 205 to be initially magnetically attracted and fixed after being inserted into the wire seat 202. A pressure block 206 is rotatably connected inside the wire seat 202, and a rotating shaft is fixedly connected to its end. The bottom end of the pressure block 206 is rotatably connected to the inner wall of the wire seat 202 through the rotating shaft. The top end of the pressure block 206 is set as a free end, allowing the pressure block 206 to rotate freely. 6. The shaft can rotate around a pivot. A steel wire rope 207 is mounted on the pivot. One end of each steel wire rope 207 is fixedly connected to a tensioning shaft 208. Both ends of the steel wire ropes 207 are fixedly connected to the tensioning shaft 208 and the pivot, respectively. The tensioning shaft 208 is rotatably connected to the inner wall of the support frame 201, allowing the tensioning shaft 208 to drive multiple pivots to rotate synchronously via the steel wire ropes 207. This enables simultaneous locking of multiple conductor seats 202. The tensioning shaft 208 has a D-shaped groove 209 inside, and a D-shaped groove 209 is slidably connected inside. The D-shaped rod 210 has a rotating head 211 fixedly connected to its end. A limiting block 212 is fixedly connected to the rotating head 211, and an elastic locking block 213 is fixedly connected to the limiting block 212. A limiting groove is opened on the inner wall of the support frame 201. The limiting groove matches the limiting block 212, so that the limiting block 212 can limit the rotating head 211 and prevent it from rotating. The elastic locking block 213 can use its own elasticity to lock into the limiting groove and lock the limiting block 212 in place, making it difficult for it to come out easily and improving stability.

[0023] Please see Figure 1 and Figure 4 The equalizing mechanism 4 includes an equalizing ring 401, a locking seat 402 on the equalizing ring 401, and the equalizing ring 401 is located on the outside of the disc insulator string 3. The locking seat 402 has a mounting hole 403, and a mounting bolt 404 is provided inside the mounting hole 403. The mounting bolt 404 can be screwed into the mounting hole 403, and the equalizing ring 401 is locked to the outside of the disc insulator string 3 by the locking seat 402. The equalizing ring 401 distributes the high voltage evenly around the object, ensuring that there is no potential difference between the different parts of the ring, thereby achieving the effect of equalizing the voltage and playing a very good role in equalizing the voltage.

[0024] During operation, the wire is placed on the wire holder 202, and the movable cover 204 is rotated so that the magnetic insert block 205 at the end of the movable cover 204 is inserted into the wire holder 202 for initial fixation using magnetic attraction. Then, the rotating head 211 is rotated, which drives the D-shaped rod 210 to rotate. The D-shaped rod 210 drives the tensioning shaft 208 to rotate through the D-shaped groove 209. The tensioning shaft 208 rotates to wind up the steel wire rope 207. After the steel wire rope 207 is wound up, it drives the rotating shaft to rotate. The rotating shaft drives the pressure block 206 to rotate. The pressure block 206 rotates to press the insert block 205. Then, the rotating head 211 is pressed inward to insert the limiting block 212 into the limiting groove for limiting. The elastic block 213 is used to prevent loosening, which allows for the rapid installation of multiple wires at the same time, effectively improving installation efficiency and convenience.

[0025] Visible corona voltage test and radio interference voltage test were conducted on the double-connected single-point V-type suspension string of this disc suspension insulator.

[0026] Visible corona voltage test

[0027] Experimental setup: During the suspension string test, the simulated conductor consists of a six-split conductor with a split spacing of 500mm (conductor model: 1 / G2A-1000 / 80). The effective length of the conductor is 16m. Shielding rings with a ring diameter of 1.5m are added to both ends of the conductor. The simulated crossarm is suspended under the suspension insulator string. Suspension clamps and other hardware are installed in the middle of the simulated conductor.

[0028] Test method: Gradually increase the voltage applied to the test sample until corona is observed, maintain for 5 minutes, and record the voltage as the corona initiation voltage; then gradually decrease the voltage applied to the test sample until the corona disappears, maintain for 5 minutes, and record the voltage as the corona extinguishing voltage. Repeat the test 3 times, and take the average value as the corona initiation voltage and corona extinguishing voltage of the test sample.

[0029] Experimental results: Experimental conditions: t1 = 22.0℃, t W =16.0℃, P1=101.6kPa, position correction factor k=1.00; suspension height correction factor k: -1.00; weather correction factor k: -1.00. The test results are shown in the table below.

[0030]

[0031] Radio interference voltage test

[0032] Test setup: Same as visible corona voltage test.

[0033] Test method: First, apply 120% of the specified voltage to the test sample and maintain it for 5 minutes. Then, reduce the voltage to 30% of the specified voltage. Gradually increase the voltage until it reaches 120% of the specified voltage, and then gradually decrease the voltage back to 30% of the specified voltage. During the second voltage reduction process, record the applied voltage and the radio interference voltage value simultaneously. Typically, each voltage step is 10% of the specified voltage value.

[0034] Experimental results: Experimental conditions: t1 = 22.0℃, t W =16.0℃, P1=101.6kPa, the test results are shown in the table below.

[0035]

[0036] The above tests show that the double-connected single-point V-type suspension string of this disc-shaped suspension insulator meets the technical requirements.

[0037] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A disc-type suspension insulator double-connected single-point V-shaped suspension string, including a spacer (1), characterized in that: The spacer (1) is provided with a quick-installation mechanism (2), and the top of the spacer (1) is provided with two V-shaped disc insulator strings (3), and the outside of the two disc insulator strings (3) is provided with a voltage equalization mechanism (4). The quick-assembly mechanism (2) includes a support frame (201). Multiple wire seats (202) are provided on the outer side of the support frame (201). A connecting seat (203) is fixedly connected to one end of each wire seat (202). A movable cover (204) is rotatably connected to the connecting seat (203). An embedded locking block (205) is fixedly connected to the end of the movable cover (204). A pressure block (206) is rotatably connected inside the wire seat (202). A rotating shaft is fixedly connected to the end of the pressure block (206). The rotating shaft is provided with steel wire ropes (207), and one end of each of the steel wire ropes (207) is fixedly connected to a tensioning shaft (208). The tensioning shaft (208) has a D-shaped groove (209) inside, and a D-shaped rod (210) is slidably connected inside the D-shaped groove (209). A rotating head (211) is fixedly connected to the end of the D-shaped rod (210), and a limit block (212) is fixedly connected to the rotating head (211). An elastic locking block (213) is fixedly connected to the limit block (212).

2. The disc-shaped suspension insulator double-connected single-point V-type suspension string according to claim 1, characterized in that: The support frame (201) is fixedly installed on the spacer frame (1), and one end of each of the multiple wire seats (202) is rotatably connected to the movable cover (204) through the connecting seat (203).

3. The disc-type suspension insulator double-connected single-point V-type suspension string according to claim 1, characterized in that: The cross-sectional shape of the embedded card block (205) is set to L-shape, and a magnet block is fixedly connected inside the embedded card block (205).

4. The disc-shaped suspension insulator double-connected single-point V-type suspension string according to claim 1, characterized in that: The bottom end of the pressure block (206) is rotatably connected to the inner wall of the wire seat (202) via a rotating shaft, and the top end of the pressure block (206) is set as a free end.

5. The disc-shaped suspension insulator double-connected single-point V-type suspension string according to claim 1, characterized in that: The two ends of the wire rope (207) are fixedly connected to the tension shaft (208) and the rotating shaft, respectively, and the tension shaft (208) is rotatably connected to the inner wall of the support frame (201).

6. The disc-shaped suspension insulator double-connected single-point V-type suspension string according to claim 1, characterized in that: The support frame (201) has a limiting groove on its inner wall, and the limiting groove matches the limiting block (212).

7. The disc-shaped suspension insulator double-connected single-point V-type suspension string according to claim 1, characterized in that: The pressure equalization mechanism (4) includes a pressure equalization ring (401), and a locking seat (402) is provided on the pressure equalization ring (401).

8. The disc-type suspension insulator double-connected single-point V-type suspension string according to claim 7, characterized in that: The equalizing ring (401) is located on the outside of the disc insulator string (3), and the locking seat (402) has an installation hole (403) and an installation bolt (404) inside the installation hole (403).

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