Suspension type flexible anti-seismic structure of high-voltage direct-current converter valve tower

Abstract

The invention discloses a suspension type flexible anti-seismic structure of a high-voltage direct-current converter valve tower, which comprises two top fixing pieces, the lower surfaces of the two top fixing pieces are fixedly connected with a suspension rope, the outer surface of the suspension rope is fixedly connected with a plurality of damping blocks, and the damping blocks are fixedly connected with the top fixing pieces. A plurality of single valves are arranged on one side of the damping block, a bottom shielding cover is fixedly connected to the lowermost end of the suspension rope, an S-shaped bridge frame is arranged among the multiple single valves, and a main water path is arranged on one side of the S-shaped bridge frame. Vibration caused by the suspension rope can be absorbed and reduced through the damping blocks. When the suspension rope vibrates, the connecting ring is driven to deflect. When the connecting ring deflects, the flexible connecting plate can ensure tight connection between the connecting ring and the supporting frame. And meanwhile, the flexible connecting plates which are arranged in parallel up and down can achieve the effect of limiting the distance between the two parts. And the buffer rods between the flexible connecting plates can reduce vibration for protection.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-voltage direct current transmission, in particular to a suspension type flexible anti-seismic structure of a high-voltage direct current converter valve tower. BACKGROUND

[0002] A high-voltage direct current transmission system is a system for realizing power transmission in a direct current mode. Since stable direct current power transmission has no inductive and reactive power loss, and there is no problem of capacitive charging of a transmission line, direct current transmission is suitable for high-voltage and large-capacity long-distance power transmission, and plays an important role in the energy channel in China's West-to-East power transmission. The direct current transmission system converts the alternating current power source of the sending end power grid into direct current power through rectification and sends it out, and converts the received direct current power source into alternating current power through inversion and supplies it to the receiving end power grid, which has the characteristics of asynchronous power supply and relative isolation between the sending and receiving ends, and therefore has important applications in decoupling and interconnection of large regional power grids in China.

[0003] According to the prior art, the publication number CN110380624B discloses a converter valve tower. At least two upper and lower stacked valve layers, a grading ring arranged above the uppermost valve layer, and a water leakage detection mechanism arranged below the lowermost valve layer are provided. Each valve layer includes two valve modules arranged side by side, and a maintenance platform capable of being detached and translated is arranged between the valve modules in the same layer. The valve modules in the same layer are electrically connected by a pipe bus, the adjacent valve layers are electrically connected by a cross-layer pipe bus, the ends of the adjacent valve layers are connected by a cable-stayed insulator, and at least two cooling water pipes are arranged in the valve modules in the same column.

[0004] In the comparative document, the pipe bus is used to effectively reduce the horizontal size of the valve layer and the floor area of the valve tower, and facilitate the installation of the valve layer. However, there is no corresponding arrangement for shock absorption, which may easily cause damage to electrical components due to vibration. SUMMARY

[0005] The present application aims to provide a suspension type flexible anti-seismic structure of a high-voltage direct current converter valve tower to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a top fixing member, the number of the top fixing member is two, the lower surface of the two top fixing members is fixedly connected with a suspension rope, the outer surface of the suspension rope is fixedly connected with a plurality of shock-absorbing blocks, one side of the shock-absorbing block is provided with a plurality of single-weight valves, the lowermost end of the suspension rope is fixedly connected with a bottom shielding cover, an S-shaped bridge is arranged between the plurality of single-weight valves, and a main waterway is arranged on one side of the S-shaped bridge.

[0007] Preferably, the single valve comprises a support frame, a shielding cover is arranged on the support frame, a support plate is arranged in the support frame, a damping capacitor is arranged in the middle of the support plate, a saturable reactor is arranged on one side of the damping capacitor, and a cooling water channel is arranged on the other side of the damping capacitor, and the cooling water channel is communicated with a main water channel.

[0008] Preferably, the damping block comprises a connecting ring, the connecting ring is fixedly connected with a suspension rope, a flexible connecting plate is arranged on one side of the connecting ring, one end of the flexible connecting plate is fixedly connected with the single valve, a plurality of buffer rods are arranged between the flexible connecting plate and the single valve, and connecting plates are arranged at the upper and lower ends of the plurality of buffer rods.

[0009] Preferably, connecting shafts are arranged at both ends of the connecting plate, the connecting shafts are fixedly connected with the connecting ring and the single valve respectively, the buffer rods are fixedly connected with the connecting plates on the upper and lower sides through movable bases at both ends of the buffer rods, and a protective cover is arranged on the outer side of the connecting plate.

[0010] Preferably, the S-shaped bridge is internally provided with a mounting groove, one end of the S-shaped bridge is fixedly connected with a bunching port, a plurality of limiting strips are rotatably connected in the bunching port, and an adjusting device is arranged in the middle of the S-shaped bridge.

[0011] Preferably, the bunching port is funnel-shaped, and the limiting strips on the inner wall of the bunching port are fixedly connected with wire clamps.

[0012] Preferably, the adjusting device comprises a positioning plate, the positioning plate is circular, the positioning plate is fixedly arranged on the inner wall of the bending part of the S-shaped bridge, stretching belts are fixedly connected at both ends of the positioning plate, and receiving heads are arranged in the middle of the stretching belts.

[0013] Preferably, the receiving head comprises a rotating rod, a hole is arranged in the rotating rod, the stretching belt passes through the hole, a fixed shell is arranged on the outer side of the rotating rod, the fixed shell is fixedly connected with the S-shaped bridge, a ratchet gear is arranged at one end of the rotating rod, and the ratchet gear is rotatably connected with the fixed shell.

[0014] Compared with existing technologies, the advantages of this invention are: it can absorb and reduce vibrations from the suspension rope through shock-absorbing blocks. When the suspension rope vibrates, it causes the connecting ring to deflect. When the connecting ring deflects, the flexible connecting plate ensures a tight connection between the connecting ring and the support frame. Simultaneously, the vertically parallel flexible connecting plates limit the distance between them. The buffer rods between the flexible connecting plates reduce vibration and provide protection. During vibration, the S-shaped cable tray also vibrates, requiring protection of the internal wiring. When vibration occurs, the cable is pulled and moved. The cable itself is fixed to the inner wall of the cable tray by a limiting strip, with a length allowance. When pulled downwards, it causes the limiting strip to move downwards; when contracted, it returns to its original position under the action of the limiting strip, reducing friction with the S-shaped cable tray. The adjustment device of the S-shaped cable tray can adjust its length. By rotating the ratchet gear, the rotating rod can be rotated to stretch the tension band, thereby lengthening or reducing the length of the S-shaped cable tray. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a top view of the structure of the present invention;

[0017] Figure 3 This is a schematic diagram of the shock-absorbing block of the present invention;

[0018] Figure 4 This is a schematic diagram of the internal structure of the shock absorber block of the present invention;

[0019] Figure 5 This is a schematic diagram of the S-shaped cable tray structure of the present invention;

[0020] Figure 6 This is a schematic diagram of the internal structure of the S-shaped cable tray of the present invention.

[0021] In the diagram: 1. Top fixing component; 2. Suspension rope; 3. Shock absorber; 4. Single valve; 5. Support frame; 6. Shielding cover; 7. Support plate; 8. Connecting ring; 9. Connecting plate; 10. Buffer rod; 11. Connecting shaft; 12. Movable base; 13. S-shaped cable tray; 14. Mounting groove; 15. Binding opening; 16. Limiting strip; 17. Adjustment device; 18. Positioning plate; 19. Tension band; 20. Storage head; 21. Rotating rod; 22. Fixed shell; 23. Ratchet. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1-6 The embodiments provided by the present invention are as follows:

[0024] Example: Includes two top fixing members 1. Suspension ropes 2 are fixedly connected to the lower surfaces of the two top fixing members 1. The suspension ropes 2 serve a weighing function. Multiple shock-absorbing blocks 3 are fixedly connected to the outer surface of the suspension ropes 2, reducing vibrations transmitted from the suspension ropes 2. Multiple single-weight valves 4 are provided on one side of each shock-absorbing block 3. A bottom shield 6 is fixedly connected to the lowest end of each suspension rope 2. An S-shaped cable tray 13 is provided between the multiple single-weight valves 4, and a main water channel is provided on one side of the S-shaped cable tray 13. The S-shaped cable tray 13 serves to fix and install cables.

[0025] The single-phase valve 4 includes a support frame 5, a shielding cover 6 on the support frame 5, a support plate 7 inside the support frame 5, a damping capacitor in the middle of the support plate 7, a saturated reactor on one side of the damping capacitor, and a cooling water passage on the other side of the damping capacitor, which is connected to the main water passage. The cooling water passage can dissipate heat and cool the water under the action of the coolant from the main water passage.

[0026] The shock absorber block 3 includes a connecting ring 8, which is fixedly connected to the suspension rope 2. A flexible connecting plate 9 is provided on one side of the connecting ring 8, and one end of the flexible connecting plate 9 is fixedly connected to the single-weight valve 4. Multiple buffer rods 10 are provided between the flexible connecting plate 9 and the single-weight valve 4, and each of the multiple buffer rods 10 has a connecting plate 24 at both its upper and lower ends. The buffer rods 10 can reduce vibration and increase the buffering effect.

[0027] Both ends of the connecting plate 24 are provided with connecting shafts 11. The two connecting shafts 11 are fixedly connected to the connecting ring 8 and the single valve 4 respectively. Both ends of the buffer rod 10 are fixedly connected to the upper and lower connecting plates 24 through the movable base 12. The outer side of the connecting plate 24 is provided with a protective cover.

[0028] The S-shaped cable tray 13 has an installation groove 14 inside. One end of the S-shaped cable tray 13 is fixedly connected to a retaining opening 15. Multiple limiting strips 16 are rotatably connected inside the retaining opening 15. An adjustment device 17 is provided in the middle of the S-shaped cable tray 13.

[0029] The opening 15 is funnel-shaped, and a wire clip is fixedly connected to the limiting strip 16 on the inner wall of the opening 15.

[0030] The adjusting device 17 includes a positioning plate 18, which is circular and fixed to the inner wall of the bend of the S-shaped cable tray 13. Tension straps 19 are fixedly connected to both ends of the positioning plate 18, and a storage head 20 is provided in the middle of each tension strap 19. The storage head 20 includes a rotating rod 21 with a hole through which the tension straps 19 pass. A fixing shell 22 is provided on the outer side of the rotating rod 21 and is fixedly connected to the S-shaped cable tray 13. A ratchet gear is provided at one end of the rotating rod 21 and is rotatably connected to the fixing shell 22.

[0031] The shock absorber 3 absorbs and reduces the vibration transmitted by the suspension rope 2. When the suspension rope 2 vibrates, it causes the connecting ring 8 to deflect. When the connecting ring 8 deflects, the flexible connecting plate 9 ensures a tight connection between the connecting ring 8 and the support frame 5. At the same time, the vertically parallel flexible connecting plates 9 limit the distance between them. The buffer rod 10 between the flexible connecting plates 9 reduces vibration and provides protection. During vibration, the S-shaped cable tray 13 also vibrates, and the internal wiring needs to be protected. When vibration occurs, the cable is pulled and moved. The cable itself is fixed to the inner wall of the clamp 15 by the limiting strip 16, with a length allowance. When pulled downwards, it causes the limiting strip 16 to move downwards, and when contracted, it returns to its original position under the action of the limiting strip 16, reducing friction with the S-shaped cable tray 13. The adjustment device 17 of the S-shaped cable tray 13 can adjust its length. By rotating the ratchet gear, the rotating rod 21 can be rotated to stretch the tension band 19, thereby lengthening or decreasing the length of the S-shaped cable tray 13.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description; thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A suspended flexible seismic resistant structure of a high voltage direct current converter valve tower comprising a top fixing element (1), characterized in that: The number of the top fixing part (1) is two, the lower surface of the two top fixing parts (1) is fixedly connected with a suspension rope (2), the outer surface of the suspension rope (2) is fixedly connected with a plurality of damping blocks (3), one side of the damping block (3) is provided with a plurality of single-weight valves (4), the lowermost end of the suspension rope (2) is fixedly connected with a bottom shielding cover, an S-shaped bridge is arranged between the plurality of single-weight valves (4), and one side of the S-shaped bridge is provided with a main waterway.

2. A suspended flexible seismic resistant structure of a high voltage DC converter valve tower according to claim 1, characterized in that: The single-weight valve (4) comprises a supporting frame (5), a shielding cover (6) is arranged on the supporting frame (5), the inside of the supporting frame (5) is provided with a supporting plate (7), the middle part of the supporting plate (7) is provided with a damping capacitor, one side of the damping capacitor is provided with a saturable reactor, and the other side of the damping capacitor is provided with a cooling waterway, which is communicated with the main waterway.

3. The suspended flexible seismic resistant structure of a high voltage DC converter valve tower according to claim 1, characterized in that: The damping block (3) comprises a connecting ring (8), the connecting ring (8) is fixedly connected with the suspension rope (2), one side of the connecting ring (8) is provided with a flexible connecting plate (9), one end of the flexible connecting plate (9) is fixedly connected with the single-weight valve (4), a plurality of buffer rods (10) are arranged between the flexible connecting plate (9) and the single-weight valve (4), and connecting plates (24) are arranged at the upper and lower ends of the plurality of buffer rods (10).

4. A suspended flexible seismic resistant structure of a high voltage DC converter valve tower according to claim 3, characterized in that: Both ends of the connecting plate (24) are provided with connecting shafts (11), the two connecting shafts (11) are fixedly connected with the connecting ring (8) and the single-weight valve (4) respectively, both ends of the buffer rod (10) are fixedly connected with the connecting plates (24) on the upper and lower sides through movable bases (12), and the outer side of the connecting plate (24) is provided with a protective cover.

5. A suspended flexible seismic resistant structure of a high voltage DC converter valve tower according to claim 4, characterized in that: The inside of the S-shaped bridge (13) is provided with a mounting groove (14), one end of the S-shaped bridge (13) is fixedly connected with a bunching port (15), a plurality of limiting strips (16) are rotatably connected in the inside of the bunching port (15), and the middle part of the S-shaped bridge (13) is provided with an adjusting device (17).

6. A suspended flexible seismic resistant structure of a high voltage DC converter valve tower according to claim 5, characterized in that: The bunching port (15) is funnel-shaped, and the limiting strips (16) on the inner wall of the bunching port (15) are fixedly connected with wire clamps.

7. A suspended flexible seismic resistant structure of a high voltage DC converter valve tower according to claim 1, characterized in that: The adjusting device (17) comprises a positioning plate (18), the positioning plate (18) is circular, the positioning plate (18) is fixedly arranged on the inner wall of the bending part of the S-shaped bridge (13), both ends of the positioning plate (18) are fixedly connected with stretching belts (19), and the middle part of the stretching belt (19) is provided with a receiving head (20).

8. A suspended flexible seismic resistant structure of a high voltage DC converter valve tower according to claim 7, characterized in that: The receiving head (20) comprises a rotating rod (21), a hole is formed in the rotating rod (21), the stretching belt (19) passes through the hole, a fixed shell (22) is arranged on the outer side of the rotating rod (21), the fixed shell (22) is fixedly connected with the S-shaped bridge (13), one end of the rotating rod (21) is provided with a ratchet gear (23), and the ratchet gear is rotatably connected with the fixed shell (22).

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