Sound barrier equipment for extra-high voltage converter station

Abstract

The invention relates to the technical field of power transmission equipment, and provides extra-high voltage converter station sound barrier equipment which comprises a concrete base, a plurality of windproof columns are poured at the top of the concrete base and distributed at equal intervals in the length direction of the concrete base, and a building block enclosing wall is built between every two adjacent windproof columns. A sound insulation barrier structure is arranged at the tops of the multiple windproof columns and comprises multiple first steel beams, damping shock absorbers are fixedly connected to the bottoms of the multiple first steel beams, the multiple damping shock absorbers are fixedly connected to the tops of the corresponding windproof columns, and second steel beams are clamped to the tops of the multiple first steel beams. Reinforcing assemblies are arranged at the joints of the first steel beams and the corresponding second steel beams, and barrier plates are fixedly connected between every two adjacent first steel beams and between every two adjacent second steel beams. The first steel beams are connected with the windproof columns through the damping vibration absorbers, vibration energy caused by wind vibration or earthquakes is effectively absorbed, and the risk of fatigue and loosening of bolts is remarkably reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of power transmission equipment, and in particular to a sound barrier device for an ultra-high voltage converter station. Background Art

[0002] As core nodes for long-distance, high-capacity power transmission, noise pollution control at ultra-high voltage (UHV) converter stations has become a key industry challenge. As voltage levels increase to ±800 kV and above, equipment operating noise is becoming lower-frequency and higher-intensity (primarily from magnetostrictive noise from converter transformers and airflow noise from valve hall cooling fans).

[0003] After searching, the Chinese patent (publication number: CN202359874U) discloses "a combined fence of a UHV DC converter station, the fence comprising a lower part and an upper part, wherein the lower part is a concrete block fence, the upper part is a sound barrier, and the sound barrier comprises steel columns, steel beams and sound insulation panels fixed between the steel columns and the steel beams. In another preferred embodiment, the fence further comprises a sound-absorbing tube located on the upper part of the sound barrier and connected to the sound barrier."

[0004] However, during the implementation of the technical solutions of this type of patent, there are certain technical defects in the technical solutions of this type of patent: First, the upper sound barrier (3-6m high) of this patent is connected to the wind-resistant columns of the lower concrete wall through anchor bolts. In strong wind / earthquake areas, the tall, thin-walled steel structure is prone to bolt fatigue and loosening due to wind vibration or resonance.

[0005] Second, this type of patent does not take into account the impact of the strong electromagnetic environment of the UHV converter station. Metal sound barriers (steel columns, steel beams, galvanized sound insulation panels) may generate corona discharge or electromagnetic interference near high-voltage equipment, and no electromagnetic shielding measures are set up, which may cause equipment failure, radio interference or safety hazards, and does not meet the strict EMC requirements of UHV converter stations.

[0006] In view of this, the present invention proposes a UHV converter station sound barrier device. Summary of the Invention

[0007] The present invention provides a UHV converter station sound barrier device, which solves the problem in the prior art that anchor bolts are easily loosened in wind vibration or resonance environments.

[0008] The technical solution of the present invention is as follows: A sound barrier device for an ultra-high voltage converter station, comprising a concrete base, a plurality of windbreak columns cast on the top of the concrete base, the plurality of windbreak columns being equidistantly distributed along the length direction of the concrete base, a brick wall being built between two adjacent windbreak columns, a sound insulation barrier structure being arranged on the tops of the plurality of windbreak columns, the sound insulation barrier structure comprising a plurality of first steel beams corresponding one to one to the windbreak columns, the bottoms of the plurality of first steel beams being fixedly connected to damping vibration absorbers, the plurality of damping vibration absorbers being fixedly connected to the tops of the corresponding windbreak columns, the tops of the plurality of first steel beams being clamped with second steel beams, reinforcement components being arranged at the connections between the plurality of first steel beams and the corresponding second steel beams, and barrier plates being fixedly connected between adjacent two first steel beams and between adjacent two second steel beams.

[0009] Preferably, the bottoms of several second steel beams are fixedly connected with plug rods, and the tops of several first steel beams are provided with slots that slide with the plug rods.

[0010] Preferably, both ends of the first steel beam and the second steel beam are provided with assembly grooves, and the barrier plates are slidably fitted in the corresponding assembly grooves.

[0011] Preferably, the first steel beam includes a manganese-iron alloy layer, the inner side of the manganese-iron alloy layer is fixedly connected to a first honeycomb frame, and the honeycomb grooves of the first honeycomb frame are filled with sound-absorbing cotton.

[0012] Preferably, the barrier plate comprises a foam aluminum layer, the inner side of the foam aluminum layer is fixedly connected to a second honeycomb frame, and the inner side of the second honeycomb frame is filled with glass wool.

[0013] Preferably, the reinforcement assembly includes two symmetrically distributed connecting seats, a plurality of first connecting bolts are arranged between the two connecting seats, and the two connecting seats are fixedly connected by the first connecting bolts. A plurality of second connecting bolts are arranged at the same end of the two connecting seats, and the two connecting seats are fixedly connected to the corresponding first steel beam and second steel beam respectively through the second connecting bolts.

[0014] Preferably, the reinforcement assembly further comprises a plurality of reinforcing ribs fixedly connected to the inner side of the connecting seat, and the plurality of reinforcing ribs are equidistantly distributed along the width direction of the connecting seat.

[0015] Preferably, the outer sides of the first steel beam and the second steel beam are sprayed with an electromagnetic shielding paint layer, and the first connecting bolts and the second connecting bolts are both plastic bolts.

[0016] Preferably, a sealing assembly is provided between several of the barrier panels and the block walls, the sealing assembly comprising a sealing plate, the sealing plate being fixedly connected between the barrier panels and the block walls, the bottom of the sealing plate being fixedly connected with a connecting plate which is perpendicular to the sealing plate, and the connecting plate being fixedly connected to the block walls by bolts.

[0017] The working principle and beneficial effects of the present invention are: 1. The first steel beam is connected to the windproof column through a damping vibration isolator, which effectively absorbs the vibration energy caused by wind vibration or earthquake, and significantly reduces the risk of bolt fatigue loosening. The first steel beam and the second steel beam are positioned by plug rods and slots, and combined with reinforcement components (connecting seat + reinforcing ribs) to form a rigid connection frame, which improves the overall structural stability and enhances the ability to resist wind pressure.

[0018] 2. The manganese-iron alloy layer of the first steel beam absorbs electromagnetic waves through hysteresis loss, reducing the outward radiation of electromagnetic interference (EMI) from the equipment. The outer side of the steel beam is sprayed with an electromagnetic shielding paint layer to form a continuous conductive mesh structure to reflect high-frequency electromagnetic waves. The reinforcement components use plastic bolts to completely avoid the risk of corona discharge caused by metal bolts in strong electric fields, meeting the EMC requirements of ultra-high voltage converter stations.

[0019] 3. The first steel beam is filled with sound-absorbing cotton, which is combined with a honeycomb frame structure to absorb medium and high-frequency noise. The double filling design of foam aluminum layer (highly efficient sound absorption of medium and high frequencies) + glass wool (specializing in low-frequency noise) covers the full-band noise (such as the low-frequency noise of the commutator magnetostrictive transformer and the medium and high-frequency airflow noise of the fan). The sealing component (sealing plate + connecting plate) closes the gap between the barrier plate and the block wall, blocking the sound wave leakage path.

[0020] 4. The porous structure of the foam aluminum layer can absorb the impact of flying objects, the honeycomb frame support prevents the filling material from settling and deformation, the manganese-iron alloy layer improves the surface hardness of the steel beam and resists the wear and tear of flying sand in strong wind areas; the electromagnetic shielding paint layer also has anti-corrosion function. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Figure 1 This is a structural schematic diagram of a UHV converter station sound barrier device according to the present invention; Figure 2 Schematic diagram of the structure of the sound insulation barrier structure of the present invention; Figure 3 It is a structural schematic diagram of the first steel beam of the present invention; Figure 4 for Figure 3 A schematic diagram of the enlarged structure of part A; Figure 5 It is a schematic diagram of the disassembled structure of the barrier plate and the second steel beam of the present invention; Figure 6 Schematic diagram of the internal structure of the first steel beam of the present invention; Figure 7 Schematic diagram of the internal structure of the barrier plate of the present invention; Figure 8 It is a structural schematic diagram of the reinforcement assembly of the present invention; Figure 9 It is a structural schematic diagram of the sealing assembly of the present invention.

[0023] In the figure: 1. Concrete base; 2. Windbreak column; 3. Block wall; 4. Sound insulation barrier structure; 41. First steel beam; 411. Damping vibration absorber; 412. Manganese-iron alloy layer; 413. First honeycomb frame; 414. Sound-absorbing cotton; 42. Barrier plate; 421. Foam aluminum layer; 422. Second honeycomb frame; 423. Glass wool; 43. Second steel beam; 431. Assembly groove; 432. Slot; 44. Insert rod; 45. Reinforcement assembly; 451. Connecting seat; 452. Reinforcement rib; 453. First connecting bolt; 454. Second connecting bolt; 46. Sealing assembly; 461. Sealing plate; 462. Connecting plate. DETAILED DESCRIPTION

[0024] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making any creative efforts are within the scope of protection of the present invention.

[0025] like Figures 1 to 9 As shown, this embodiment proposes a UHV converter station sound barrier device, including a concrete base 1, a plurality of windbreak columns 2 are cast on the top of the concrete base 1, and the plurality of windbreak columns 2 are equidistantly distributed along the length direction of the concrete base 1. A block wall 3 is built between each adjacent windbreak column 2, and a sound insulation barrier structure 4 is provided on the top of the plurality of windbreak columns 2. The sound insulation barrier structure 4 includes a plurality of first steel beams 41 corresponding to the windbreak columns 2 one by one, and the bottoms of the plurality of first steel beams 41 are fixedly connected with damping vibration absorbers 411, and the plurality of damping vibration absorbers 411 are fixedly connected to the tops of the corresponding windbreak columns 2. The tops of the plurality of first steel beams 41 are clamped with second steel beams 43, and reinforcement components 45 are provided at the connections between the plurality of first steel beams 41 and the corresponding second steel beams 43. Barrier plates 42 are fixedly connected between the two adjacent first steel beams 41 and between the two adjacent second steel beams 43.

[0026] The first steel beam 41 and the windproof column 2 are connected and fixed by a damping vibration absorber 411. Since the damping vibration absorber 411 has a buffering performance, this can avoid the problem of bolt fatigue loosening of the first steel beam 41 due to wind vibration or resonance during strong winds or earthquakes.

[0027] Furthermore, the bottoms of several second steel beams 43 are fixedly connected with plug rods 44, the tops of several first steel beams 41 are provided with slots 432 that slide with the plug rods 44, and both ends of the first steel beams 41 and the second steel beams 43 are provided with assembly grooves 431, and the barrier plates 42 slide with the corresponding assembly grooves 431.

[0028] The coordinated design of the insertion rod 44 and the slot 432 allows the first steel beam 41 and the second steel beam 43 to be accurately positioned, and then the reinforcement component 45 is fixed to the reinforcement component 45, so that the first steel beam 41 and the second steel beam 43 can be quickly fixed during installation. Similarly, the design of the assembly groove 431 can ensure that the barrier plate 42 can be quickly assembled to the corresponding first steel beam 41 and the inner side of the second steel beam 43, which can reduce the overall structural assembly time and thus improve installation efficiency.

[0029] Furthermore, the first steel beam 41 includes a manganese-iron alloy layer 412 , the inner side of the manganese-iron alloy layer 412 is fixedly connected to a first honeycomb frame 413 , and the honeycomb grooves of the first honeycomb frame 413 are filled with sound-absorbing cotton 414 .

[0030] The ferromanganese alloy layer 412 significantly enhances the supporting strength and wear resistance of the steel structure, reducing sand abrasion in strong wind areas to improve durability. Ferromanganese alloy has high magnetic permeability and resistivity, and can convert electromagnetic energy into heat energy through hysteresis loss and eddy current loss, thereby absorbing electromagnetic waves in specific frequency bands. Integrating the ferromanganese alloy layer into the converter station sound barrier can simultaneously provide acoustic noise reduction and electromagnetic shielding functions, reducing the outward radiation of electromagnetic interference generated by the valve hall and converter transformer, and avoiding the noise problem caused by corona discharge in traditional metal sound barriers. The first honeycomb frame 413 can not only enhance the strength of the steel structure, but also the inner side of the first honeycomb frame 413 is filled with sound-absorbing cotton 414 to absorb sound waves and further reduce noise.

[0031] Furthermore, the barrier plate 42 includes a foam aluminum layer 421 , the inner side of the foam aluminum layer 421 is fixedly connected to a second honeycomb frame 422 , and the inner side of the second honeycomb frame 422 is filled with glass wool 423 .

[0032] The honeycomb-like porous structure of the aluminum foam layer 421 provides extremely high specific strength, absorbing the impact energy from equipment misoperation or splashing objects, preventing the barrier from cracking and deformation. The hexagonal support network of the second honeycomb frame 422 enhances overall rigidity, preventing the glass wool layer 423 from settling or collapsing under pressure due to its own weight, distributing stress across the entire surface and reducing the risk of local deformation. In addition, the open-pore foam structure of the foam aluminum layer 421 forms a maze path for sound waves, consuming sound energy through friction and viscous loss. The micro-vibration between the fibers of the glass wool layer 423 converts sound energy into heat energy, efficiently absorbing low-frequency noise. The foam aluminum reduces mid- and high-frequency diffracted sound waves, and the glass wool suppresses low-frequency penetration, synergistically reducing mixed noise.

[0033] Furthermore, the reinforcement assembly 45 includes two symmetrically distributed connecting seats 451, and a plurality of first connecting bolts 453 are arranged between the two connecting seats 451. The two connecting seats 451 are fixedly connected by the first connecting bolts 453. A plurality of second connecting bolts 454 are arranged at the same end of the two connecting seats 451. The two connecting seats 451 are respectively fixedly connected to the corresponding first steel beam 41 and the second steel beam 43 through the second connecting bolts 454. A plurality of reinforcing ribs 452 are fixedly connected to the inner side of the connecting seat 451, and the plurality of reinforcing ribs 452 are equidistantly distributed along the width direction of the connecting seat 451.

[0034] The two connecting seats 451 are fixed by the second connecting bolts 454, and then the two connecting seats 45 are fixed to the first steel beam 41 and the second steel beam 43 by the first connecting bolts 453. In this way, a stable connection is maintained between the first steel beam 41 and the second steel beam 43. The design of the reinforcing ribs 452 can further enhance the strength of the overall structure, thereby greatly enhancing the compressive resistance of the first steel beam 41 and the second steel beam 43.

[0035] Furthermore, the outer sides of the first steel beam 41 and the second steel beam 43 are sprayed with an electromagnetic shielding paint layer, and the first connecting bolt 453 and the second connecting bolt 454 are both plastic bolts.

[0036] The electromagnetic shielding paint layer can form a continuous conductive mesh structure on the surface of the first steel beam 41 and the second steel beam 43, and suppress electromagnetic interference through reflection loss and hysteresis loss. The plastic bolts have insulating properties and can reduce electromagnetic influence.

[0037] Furthermore, a sealing assembly 46 is provided between several barrier panels 42 and the block wall 3. The sealing assembly 46 includes a sealing plate 461. The sealing plate 461 is fixedly connected between the barrier panel 42 and the block wall 3. The bottom of the sealing plate 461 is fixedly connected with a connecting plate 462 which is perpendicular to the sealing plate 461. The connecting plate 462 is fixedly connected to the block wall 3 by bolts.

[0038] The design of the sealing plate 461 can seal the gap between the barrier plate 42 and the block wall 3, thereby preventing noise waves from passing through the gap, thereby forming a comprehensive barrier to noise waves.

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A UHV converter station sound barrier device, comprising a concrete base (1), characterized in that: A plurality of windbreak columns (2) are cast on the top of the concrete base (1), and the plurality of windbreak columns (2) are equidistantly distributed along the length direction of the concrete base (1). A brick wall (3) is built between two adjacent windbreak columns (2). A sound insulation barrier structure (4) is provided on the top of the plurality of windbreak columns (2). The sound insulation barrier structure (4) includes a plurality of first steel beams (41) corresponding to the windbreak columns (2). The bottoms of the plurality of first steel beams (41) are fixedly connected to damping vibration absorbers (411). The plurality of damping vibration absorbers (411) are fixedly connected to the tops of the corresponding windbreak columns (2). The tops of the plurality of first steel beams (41) are clamped with second steel beams (43). A reinforcement assembly (45) is provided at the connection between the plurality of first steel beams (41) and the corresponding second steel beams (43). A barrier plate (42) is fixedly connected between two adjacent first steel beams (41) and between two adjacent second steel beams (43).

2. The UHV converter station sound barrier device according to claim 1, characterized in that: The bottoms of the plurality of second steel beams (43) are fixedly connected to an insertion rod (44), and the tops of the plurality of first steel beams (41) are provided with a slot (432) that is slidably engaged with the insertion rod (44).

3. The UHV converter station sound barrier device according to claim 1, characterized in that: Both ends of the first steel beam (41) and the second steel beam (43) are provided with assembly grooves (431), and the barrier plate (42) is slidably fitted in the corresponding assembly grooves (431).

4. The UHV converter station sound barrier device according to claim 1, characterized in that: The first steel beam (41) comprises a manganese-iron alloy layer (412), a first honeycomb frame (413) is fixedly connected to the inner side of the manganese-iron alloy layer (412), and the honeycomb grooves of the first honeycomb frame (413) are filled with sound-absorbing cotton (414).

5. The UHV converter station sound barrier device according to claim 1, characterized in that: The barrier plate (42) comprises a foam aluminum layer (421), the inner side of the foam aluminum layer (421) is fixedly connected to a second honeycomb frame (422), and the inner side of the second honeycomb frame (422) is filled with glass wool (423).

6. The UHV converter station sound barrier device according to claim 1, characterized in that: The reinforcement assembly (45) includes two symmetrically distributed connection seats (451). A plurality of first connection bolts (453) are provided between the two connection seats (451), and the two connection seats (451) are fixedly connected via the first connection bolts (453). A plurality of second connection bolts (454) are provided at the same end of the two connection seats (451), and the two connection seats (451) are fixedly connected to the corresponding first steel beam (41) and second steel beam (43) via the second connection bolts (454).

7. The UHV converter station sound barrier device according to claim 6, characterized in that: The reinforcement assembly (45) further comprises a plurality of reinforcing ribs (452) fixedly connected to the inner side of the connecting seat (451), wherein the plurality of reinforcing ribs (452) are distributed at equal intervals along the width direction of the connecting seat (451).

8. The UHV converter station sound barrier device according to claim 6, characterized in that: The outer sides of the first steel beam (41) and the second steel beam (43) are sprayed with an electromagnetic shielding paint layer, and the first connecting bolt (453) and the second connecting bolt (454) are both plastic bolts.

9. The UHV converter station sound barrier device according to claim 1, characterized in that: A sealing assembly (46) is provided between the barrier panels (42) and the block wall (3). The sealing assembly (46) comprises a sealing plate (461). The sealing plate (461) is fixedly connected between the barrier panels (42) and the block wall (3). A connecting plate (462) perpendicular to the sealing plate (461) is fixedly connected to the bottom of the sealing plate (461). The connecting plate (462) is fixedly connected to the block wall (3) via bolts.

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