Low-noise box-type substation sound absorbing and insulating wall structure

Abstract

The present application relates to the technical field of van-type transformer substation, in particular to a low-noise box-type transformer substation sound-absorbing and sound-insulating wall structure, which comprises a supporting outer framework, an accumulation component equidistantly installed around the inside of the supporting outer framework, and a ceiling fixedly installed at the top end of the supporting outer framework, wherein the accumulation component comprises an inner core device and a supporting device, the inner core device is equidistantly placed inside the supporting device, and the inner core device comprises a supporting cover, a sound-absorbing inner core layer, a supporting chassis, a gas guide hole, a positioning block, a supporting side slide rod, a limiting interception net, a guide inner sleeve, a positioning hole, a positioning rod, an invaginated groove, a displacement sliding block, a supporting side plate and a first spring; the positioning hole is symmetrically formed in one side of the inside of the guide inner sleeve; the limiting interception net is slidingly inserted into the other side of the inside of the guide inner sleeve; and the supporting side slide rod is fixedly installed at the side end of the limiting interception net away from the positioning hole. Through the arrangement of the accumulation component, the van-type transformer substation is realized to be internally multi-layer sandwiched and combinedly installed.

Description

Technical Field

[0001] This invention relates to the field of prefabricated substation technology, specifically to a sound-absorbing and sound-insulating wall panel structure for a low-noise prefabricated substation. Background Technology

[0002] A prefabricated box-type substation is a compact indoor / outdoor power distribution device that combines high-voltage switchgear, distribution transformers, and low-voltage power distribution equipment according to a specific wiring scheme. It is widely used in residential areas, commercial centers, industrial and mining enterprises, hospitals, schools, and other places. The noise of a box-type substation mainly comes from electromagnetic noise and mechanical noise generated by the transformer during operation. Electromagnetic noise is mainly caused by the magnetostriction of the silicon steel sheets in the iron core and the electromagnetic force between the winding coils. It is low-frequency noise with a maximum sound pressure level between 250 and 500 Hz. It has the characteristics of long wavelength, strong diffraction and transmission capabilities, and small attenuation with distance, making it difficult to effectively control through conventional sound insulation methods. Mechanical noise is mainly caused by the operation of cooling fans and equipment vibration, and is classified as medium- to high-frequency noise.

[0003] Currently, most existing prefabricated substation enclosures use simple sandwich structures, which have the following shortcomings: First, single-layer steel plates have limited sound insulation effects on low-frequency noise, making it difficult to meet the environmental protection requirements of noise-sensitive areas such as residential areas. Second, some sandwich structures only use a single sound-absorbing material for filling, lacking targeted treatment of mid- and low-frequency noise, resulting in insufficient overall noise reduction. This prevents existing prefabricated substations from having built-in multi-layer sandwich structures and modular installation functions. Therefore, an improved device is needed to address these issues. Summary of the Invention

[0004] To address the problems in the prior art, this invention provides a sound-absorbing and sound-insulating wall panel structure for a low-noise box-type substation.

[0005] The technical solution adopted by this invention to solve its technical problem is: a sound-absorbing and insulating wall panel structure for a low-noise box-type substation, including a supporting outer frame, with storage components equidistantly installed around the inner perimeter of the supporting outer frame, and a canopy fixedly installed at the top of the supporting outer frame. Each storage component includes an inner core device and a supporting device. The inner core device is equidistantly placed inside the supporting device. The inner core device includes a supporting outer cover, a sound-absorbing inner core layer, a supporting base frame, air ducts, positioning blocks, supporting side slide rods, a limiting interception net, a guide inner sleeve, positioning holes, positioning rods, recessed grooves, displacement sliders, supporting side plates, and a first spring. The positioning holes are symmetrically opened on one side of the guide inner sleeve, and the limiting interception net is slidably inserted into the other side of the guide inner sleeve. The side slide rod is fixedly installed on the side end of the limiting interception net away from the positioning hole. The support base is fixedly installed on the inner bottom end of the guide inner sleeve. The air duct is equidistantly opened on the inner bottom end of the guide inner sleeve, and the air duct is located below the support base. The support outer cover is fixedly installed on both sides of the guide inner sleeve. The positioning block is fixedly installed on the top and bottom of the side end of the guide inner sleeve near the support side slide rod. The recessed groove is opened at the center of the side end of the support side slide rod away from the limiting interception net. The support side plate is fixedly installed in the inner center of the recessed groove. The displacement slider is slidably inserted into the inner bottom and top of the support side plate. The first spring is fixedly installed between the displacement slider and the support side plate. The positioning rod is fixedly installed on the side end of the displacement slider away from the first spring.

[0006] Specifically, the support device includes a guide carriage, a door panel cover, a door frame, and a door panel. The guide carriage is symmetrically fixedly installed on both sides of the door frame. The door panel is rotatably hinged to the inner side of the door frame. The door panel cover is fixedly installed at the rear end of the door panel.

[0007] Specifically, a positioning device is fixedly installed around the interior of the supporting outer frame. The positioning device includes a guide keyway, a positioning frame, a bottom cavity, a flow guide pipe, a handle, a first insert rod, an L-shaped connecting rod, a second insert rod, a third insert rod, a connecting vertical rod, a displacement inner plate, a receiving cavity, and a second spring. The guide keyway is symmetrically opened inside the positioning frame. The bottom cavity is fixedly installed at equal intervals at the bottom of the positioning frame. The flow guide pipe is symmetrically fixedly installed at the bottom front end of the positioning frame. The receiving cavity is symmetrically fixedly installed at the top rear end of the positioning frame. The second spring is fixedly installed at the bottom of the receiving cavity. The displacement inner plate is fixedly installed at the top end of the second spring. The L-shaped connecting rod slides through the top end of the receiving cavity and connects to the displacement inner plate. The handle is fixedly installed between the two L-shaped connecting rods. The first insert rod is symmetrically fixedly installed at the bottom end of the L-shaped connecting rod near the handle. The connecting vertical rod is fixedly installed at the bottom end of the L-shaped connecting rod near the handle, and the connecting vertical rod is located inside the first insert rod. The third insert rod is fixedly installed at the bottom end of the connecting vertical rod. The second insert rod is fixedly installed at the bottom end of the L-shaped connecting rod.

[0008] Specifically, the guide carriage is slidably inserted into the inside of the guide keyway, the first insert rod, the third insert rod and the second insert rod are slidably inserted into the inside of the guide carriage respectively, and the guide inner sleeve is equidistantly slidably inserted into the inside of the door panel outer cover.

[0009] Specifically, the positioning block has a circular hole inside, the width of the support base is smaller than the width of the air duct, the support side plate has symmetrical movable grooves inside, and the top of the door panel cover has positioning holes at equal intervals inside.

[0010] Specifically, the guide inner sleeve has an installation hole at the side end near the support slide rod that is adapted to the limiting interception net, and the third insert rod, the first insert rod and the second insert rod are respectively vertically aligned with the guide keyway.

[0011] Specifically, the guide carriage has a square hole at its rear end, the door panel cover is hollow inside, and the side end of the door panel cover has a placement groove.

[0012] Specifically, the bottom cavity has symmetrical air holes at the top and bottom, the positioning frame has an air channel at the bottom inside, and the guide pipe and the bottom cavity are connected to the air channel. The top of the receiving cavity has a guide hole.

[0013] Specifically, the rear end of the positioning frame is fixedly equipped with an anti-detachment back plate, and the guide keyway is aligned with the anti-detachment back plate. The inner wall of the limiting interception net is attached to the outer surface of the sound-absorbing inner core layer. The top of the support base is provided with a placement groove. The positioning rod is aligned with the positioning block. The outer surface of the displacement slider is attached to the inner surface of the recessed groove.

[0014] The beneficial effects of this invention are:

[0015] First, this invention features five inner core devices arranged inside a support device, each with a different sound-absorbing inner core material, enabling them to perform different functions. Simultaneously, a limiting and intercepting net stably confines the sound-absorbing inner core within the guide sleeve. The support outer cover, in conjunction with the guide sleeve, independently encloses the sound-absorbing inner core within the guide sleeve. Furthermore, the interconnected air vents, bottom cavity, and flow channel allow excess heat within the guide sleeve to be absorbed and dissipated outwards through the flow channel. The multiple different sound-absorbing inner cores arranged inside the support device, stacked one on top of the other, effectively isolate and block noise within the device, significantly reducing noise levels and completing the multi-layered, built-in placement of the sound-absorbing inner cores.

[0016] Second, this invention allows the guide slide to slidably insert into the guide keyway, enabling the door panel to quickly slide and embed into the positioning frame. Simultaneously, the elasticity of the second spring causes the L-shaped connecting rod to move downwards, allowing the first, third, and second insert rods to be inserted into the guide slides at different positions. This eliminates the need for on-site welding, allowing the door frame to be installed into the positioning frame. Furthermore, the elasticity of the first spring causes the positioning rod to slide into the positioning block and the support side slide rod, thus confining the limiting interception net inside the guide inner sleeve and preventing it from detaching. This completes the combined installation of the limiting interception net and the door frame. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a three-dimensional structural diagram of the main body from a frontal perspective in this invention;

[0019] Figure 2 This is a frontal perspective three-dimensional structural diagram of the accumulated component in this invention;

[0020] Figure 3 This is a three-dimensional structural diagram of the inner core device from a frontal view in this invention;

[0021] Figure 4 In this invention Figure 3 A magnified view of part A;

[0022] Figure 5 This is a partial cross-sectional schematic diagram of the support device in this invention;

[0023] Figure 6 This is a schematic diagram of the assembly of the positioning device and the supporting outer frame in this invention;

[0024] Figure 7 This is a partial cross-sectional schematic diagram of the positioning device in this invention;

[0025] Figure 8 In this invention Figure 7 Enlarged view of a portion of point B in the middle;

[0026] Figure 9 This is a three-dimensional structural diagram of the positioning device from the rear view in this invention;

[0027] Figure 10 In this invention Figure 9 A magnified view of a portion of point C in the middle.

[0028] In the diagram: 1-Storage component, 2-Supporting outer frame, 3-Roof, 4-Inner core device, 5-Supporting device, 6-Supporting outer cover, 7-Sound-absorbing inner core layer, 8-Supporting base frame, 9-Air duct, 10-Positioning block, 11-Supporting side slide rod, 12-Limiting interception net, 13-Guide inner sleeve, 14-Positioning hole, 15-Positioning rod, 16-Inner recess, 17-Displacement slider, 18-Supporting side plate, 19-First spring, 20-Guide slide, 21-Door panel outer cover, 22-Door frame, 23-Door panel, 24-Positioning device, 25-Guide keyway, 26-Positioning frame, 27-Bottom cavity, 28-Flow guide pipe, 29-Handle, 30-First insert rod, 31-L-shaped connecting rod, 32-Second insert rod, 33-Third insert rod, 34-Connecting vertical rod, 35-Displacement inner plate, 36-Accommodation cavity, 37-Second spring. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0030] The invention will be further described below with reference to the accompanying drawings.

[0031] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the sound-absorbing and sound-insulating wall panel structure of the low-noise box-type substation of the present invention includes a supporting outer frame 2. Storage components 1 are equidistantly installed around the interior perimeter of the supporting outer frame 2. A canopy 3 is fixedly installed at the top of the supporting outer frame 2. The storage components 1 include an inner core device 4 and a supporting device 5. The inner core device 4 is equidistantly placed inside the supporting device 5. The inner core device 4 includes a supporting outer cover 6, a sound-absorbing inner core layer 7, a supporting base frame 8, an air duct 9, a positioning block 10, a supporting side slide rod 11, a limiting interception net 12, a guide inner sleeve 13, positioning holes 14, a positioning rod 15, an indented groove 16, a displacement slider 17, a supporting side plate 18, and a first spring 19. The positioning holes 14 are symmetrically opened on one side of the inside of the guide inner sleeve 13. The limiting interception net 12 is slidably inserted into the other side of the inside of the guide inner sleeve 13. The supporting side slide rod 11 is fixedly installed... The support base 8 is fixedly installed on the inner bottom of the guide sleeve 13, with air vents 9 equidistantly opened on the inner bottom of the guide sleeve 13 and located below the support base 8. The support cover 6 is fixedly installed on both sides of the guide sleeve 13. The positioning block 10 is fixedly installed on the top and bottom of the side end of the guide sleeve 13 near the support side slide rod 11. The recessed groove 16 is opened at the center of the side end of the support side slide rod 11 away from the limit interception net 12. The support side plate 18 is fixedly installed at the center of the inside of the recessed groove 16. The displacement slider 17 is slidably inserted into the bottom and top of the inside of the support side plate 18. The first spring 19 is fixedly installed between the displacement slider 17 and the support side plate 18. The positioning rod 15 is fixedly installed on the side end of the displacement slider 17 away from the first spring 19.

[0032] like Figure 5 The support device 5 includes a guide slide 20, a door panel cover 21, a door frame 22, and a door panel 23. The guide slide 20 is symmetrically fixed on both sides of the door frame 22. The door panel 23 is rotatably hinged to the inner side of the door frame 22. The door panel cover 21 is fixedly installed on the rear end of the door panel 23. The positioning rod 15 can pass through the positioning block 10 and be inserted into the inside of the door panel cover 21, so that the guide inner sleeve 13 can be restricted inside the door panel cover 21.

[0033] like Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10A positioning device 24 is fixedly installed around the inside of the supporting outer frame 2. The positioning device 24 includes a guide keyway 25, a positioning frame 26, a bottom cavity 27, a flow guide pipe 28, a handle 29, a first insert rod 30, an L-shaped connecting rod 31, a second insert rod 32, a third insert rod 33, a connecting vertical rod 34, a displacement inner plate 35, a receiving cavity 36, and a second spring 37. The guide keyway 25 is symmetrically opened inside the positioning frame 26. The bottom cavity 27 is fixedly installed at equal intervals at the bottom inside the positioning frame 26. The flow guide pipe 28 is symmetrically fixedly installed at the bottom front end of the positioning frame 26. The receiving cavity 36 is symmetrically fixedly installed at the top rear end of the positioning frame 26. The second spring 37 is fixedly installed at the bottom inside the receiving cavity 36. The inner displacement plate 35 is fixedly installed on the top of the second spring 37. The L-shaped connecting rod 31 slides through the top of the receiving cavity 36 and connects with the inner displacement plate 35. The handle 29 is fixedly installed between the two L-shaped connecting rods 31. The first insertion rod 30 is symmetrically fixedly installed on the bottom of the L-shaped connecting rod 31 near the handle 29. The connecting vertical rod 34 is fixedly installed on the bottom of the L-shaped connecting rod 31 near the handle 29, and the connecting vertical rod 34 is located inside the first insertion rod 30. The third insertion rod 33 is fixedly installed on the bottom of the connecting vertical rod 34. The second insertion rod 32 is fixedly installed on the bottom of the L-shaped connecting rod 31. The back of the anti-detachment back plate of the rear end of the positioning frame 26 is provided with an insertion hole that matches the guide slide 20, so that the guide slide 20 can easily pass through the anti-detachment back plate.

[0034] The guide slide 20 is slidably inserted into the guide keyway 25. The first insert rod 30, the third insert rod 33, and the second insert rod 32 are slidably inserted into the guide slide 20. The guide inner sleeve 13 is equidistantly slidably inserted into the door panel cover 21. The positioning block 10 has a round hole inside. The width of the support base 8 is smaller than the width of the air duct 9. The support side plate 18 has symmetrical movable grooves inside. The top of the door panel cover 21 has equidistant positioning holes inside. The guide inner sleeve 13 has an installation hole at its side end near the support side slide rod 11 that matches the limiting interception net 12. The third insert rod 33, the first insert rod 30, and the second insert rod 32 are perpendicularly aligned with the guide keyway 25. The internal rear end has a square hole, the interior of the door panel cover 21 is hollow, and the side end of the door panel cover 21 has a placement groove. The top and bottom of the bottom cavity 27 have symmetrical air holes. The bottom of the positioning frame 26 has an air passage, and the guide pipe 28 and the bottom cavity 27 are connected to the air passage. The top of the receiving cavity 36 has a guide hole. The rear end of the positioning frame 26 is fixedly installed with an anti-detachment back plate, and the guide keyway 25 is aligned with the anti-detachment back plate. The inner wall of the limiting interception net 12 is attached to the outer surface of the sound-absorbing inner core layer 7. The top of the support base 8 has a placement groove. The positioning rod 15 is aligned with the positioning block 10. The outer surface of the displacement slider 17 is attached to the inner surface of the recessed groove 16.

[0035] The working principle is as follows: During use, the sound-absorbing inner core layer 7 is installed inside the limiting interception net 12, and multiple sound-absorbing inner core layers 7 of different materials are set inside the door panel cover 21, so that the noise generated during the operation of the equipment can be absorbed and isolated. When the sound-absorbing inner core layer 7 inside the door panel cover 21 needs to be replaced, the door panel 23 can be flipped outward and opened, so that the side end of the door panel cover 21 near the support side slide rod 11 can be exposed outward. At this time, the two displacement sliders 17 can be pressed towards the center of the support side plate 18, so that the displacement sliders 17 can move while moving, and the positioning rod 15 can be moved until the end of the positioning rod 15 is pulled out from the inside of the positioning block 10, which can release the support side slide rod 11, unlock the support side slide rod 11, and then the support side slide rod 11 can be released. Pull the side slide bar 11 outwards until the limiting interception net 12 is completely pulled out from the inside of the guide inner sleeve 13, releasing the sound-absorbing inner core layer 7. Then, remove the sound-absorbing inner core layer 7 separately from the inside of the guide inner sleeve 13, and then move and insert the new sound-absorbing inner core layer 7 into the inside of the guide inner sleeve 13. At the same time, the limiting interception net 12 can be moved and inserted into the inside of the guide inner sleeve 13 until the insert plate of the limiting interception net 12 away from the side end of the supporting side slide bar 11 is inserted into the inside of the positioning hole 14, which can support the limiting interception net 12 to be stably placed inside the guide inner sleeve 13. When the supporting side slide bar 11 is about to move to fit with the guide inner sleeve 13, the displacement slider 17 can repeat the above steps, causing the positioning rod 15 to enter the inside of the supporting side slide bar 11, thereby supporting the side slide bar 11. The top of rod 11 can be flush with the bottom of positioning block 10 until the supporting sliding rod 11 is completely in contact with the guide inner sleeve 13. Then, the displacement slider 17 is released. The elasticity of the first spring 19 will drive the positioning rod 15 to move and reset quickly, so that the positioning rod 15 can be inserted into the interior of positioning block 10. At this time, the limiting interception net 12 and the supporting base frame 8 can restrict the sound-absorbing inner core layer 7 to be placed vertically inside the guide inner sleeve 13. Furthermore, it is interconnected with the bottom cavity 27 through the air duct 9, and the bottom cavity 27 is interconnected with the flow guide pipe 28. The flow guide pipe 28 can be connected to the external negative pressure equipment, so that the heat accumulated inside the guide inner sleeve 13 can be absorbed and discharged, avoiding the phenomenon of excessive heat in the sound-absorbing inner core layer 7 inside the guide inner sleeve 13. The door panel outer cover 21 has five sound-absorbing inner core layers 7 inside, each made of a different material. From the inside out, they are: a perforated sound-absorbing panel layer, a first damping constraint layer, a gradient sound-absorbing layer, a second damping constraint layer, and an outer protective panel layer. A first air layer is formed between the perforated sound-absorbing panel layer and the first damping constraint layer. A honeycomb support frame is provided between the first damping constraint layer and the gradient sound-absorbing layer for support. At the same time, a second air layer is formed between the second damping constraint layer and the outer protective panel layer to enhance sound insulation. By repeating the above steps, the five sound-absorbing inner core layers 7 can be replaced, completing the rapid replacement of the sound-absorbing inner core layers 7. When the door panel 23 needs to be installed, the guide slide 20 can be moved into the guide keyway 25.This allows the door frame 22 to slide accurately into the interior of the positioning frame 26 until the rear end of the door frame 22 contacts the anti-detachment back plate at the rear end of the positioning frame 26. When the guide slide 20 is about to penetrate the anti-detachment back plate, the handle 29 can be pushed upwards, causing the first insert rod 30, the third insert rod 33, and the second insert rod 32 to move upwards to their extreme positions. This facilitates the smooth penetration of the guide slide 20 through the anti-detachment back plate at the rear end of the positioning frame 26. When the door frame 22 moves rearwards to contact the anti-detachment back plate at the rear end of the positioning frame 26, the square holes inside the multiple guide slides 20 can be vertically aligned with the first insert rod 30, the third insert rod 33, and the second insert rod 32 at different positions. At this point, the handle 29 can be released. The elasticity of the second spring 37 will cause the displacement inner plate 35 and the L-shaped connecting rod 31 to move downwards, thereby... The connecting rod 31 can drive the first insert rod 30, the third insert rod 33, and the second insert rod 32 at different positions to insert into the interior of the guide slide 20, thus confining the door frame 22 inside the positioning frame 26 and completing the quick installation of the positioning frame 26. During use, the gap between the limiting interception net 12 and the supporting outer cover 6 allows the air vent 9 to absorb air from the guide inner sleeve 13 and the supporting outer cover 6. Simultaneously, a small gap between the supporting side slide rod 11 and the guide inner sleeve 13 facilitates airflow. The interconnection between the air vent 9, the bottom cavity 27, and the guide pipe 28 facilitates the discharge of hot air. Furthermore, the sliding of the guide slide 20 within the guide keyway 25 allows the door frame 22 to be accurately slidably installed into the positioning frame 26, completing the operation.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sound-absorbing and sound-insulating wall panel structure for a low-noise box-type substation, comprising a supporting outer frame (2), wherein storage components (1) are equidistantly installed around the interior perimeter of the supporting outer frame (2), and a canopy (3) is fixedly installed at the top of the supporting outer frame (2), characterized in that: The storage component (1) includes an inner core device (4) and a support device (5). The inner core device (4) is equidistantly placed inside the support device (5). The inner core device (4) includes a support outer cover (6), a sound-absorbing inner core layer (7), a support base frame (8), an air duct (9), a positioning block (10), a support side slide rod (11), a limiting interception net (12), a guide inner sleeve (13), a positioning hole (14), a positioning rod (15), an indented groove (16), a displacement slider (17), a support side plate (18), and a first spring (19). The positioning hole (14) is symmetrically opened on one side of the inside of the guide inner sleeve (13). The limiting interception net (12) is slidably inserted into the other side of the inside of the guide inner sleeve (13). The support side slide rod (11) is fixedly installed on the side of the limiting interception net (12) away from the positioning hole (14). The support base frame (8) is fixedly installed on the guide inner sleeve. The air vents (9) are equidistantly opened at the bottom of the inner sleeve (13), and the air vents (9) are located below the support base (8). The support cover (6) is fixedly installed on both sides of the inner sleeve (13). The positioning block (10) is fixedly installed on the top and bottom of the side end of the inner sleeve (13) near the support side slide rod (11). The recessed groove (16) is opened at the center of the side end of the support side slide rod (11) away from the limiting interception net (12). The support side plate (18) is fixedly installed in the center of the recessed groove (16). The displacement slider (17) is slidably inserted into the bottom and top of the support side plate (18). The first spring (19) is fixedly installed between the displacement slider (17) and the support side plate (18). The positioning rod (15) is fixedly installed on the side end of the displacement slider (17) away from the first spring (19).

2. The sound-absorbing and sound-insulating wall panel structure of the low-noise box-type substation according to claim 1, characterized in that: The support device (5) includes a guide slide (20), a door panel cover (21), a door frame (22), and a door panel (23). The guide slide (20) is symmetrically fixed on both sides of the door frame (22). The door panel (23) is rotatably hinged to the inner side of the door frame (22). The door panel cover (21) is fixedly installed at the rear end of the door panel (23).

3. The sound-absorbing and sound-insulating wall panel structure of the low-noise box-type substation according to claim 2, characterized in that: Positioning devices (24) are fixedly installed around the inside of the supporting outer frame (2). The positioning devices (24) include guide keyways (25), positioning frames (26), bottom cavities (27), flow guide pipes (28), handles (29), first insert rods (30), L-shaped connecting rods (31), second insert rods (32), third insert rods (33), connecting vertical rods (34), displacement inner plates (35), receiving cavities (36), and second springs (37). The guide keyways (25) are symmetrically opened inside the positioning frames (26). The bottom cavities (27) are fixedly installed at equal intervals at the bottom of the positioning frames (26). The flow guide pipes (28) are symmetrically fixedly installed at the bottom front end of the positioning frames (26). The receiving cavities (36) are symmetrically fixedly installed at the top rear end of the positioning frames (26). The second spring (37) is fixedly installed at the bottom of the inner cavity (36), the displacement inner plate (35) is fixedly installed at the top of the second spring (37), the L-shaped connecting rod (31) slides through the top of the cavity (36) and connects with the displacement inner plate (35), the handle (29) is fixedly installed between the two L-shaped connecting rods (31), the first insert rod (30) is symmetrically fixedly installed at the bottom of the L-shaped connecting rod (31) near the handle (29), the connecting vertical rod (34) is fixedly installed at the bottom of the L-shaped connecting rod (31) near the handle (29), and the connecting vertical rod (34) is located inside the first insert rod (30), the third insert rod (33) is fixedly installed at the bottom of the connecting vertical rod (34), and the second insert rod (32) is fixedly installed at the bottom of the L-shaped connecting rod (31).

4. The sound-absorbing and sound-insulating wall panel structure of the low-noise box-type substation according to claim 3, characterized in that: The guide slide (20) is slidably inserted into the inside of the guide keyway (25), the first insert (30), the third insert (33) and the second insert (32) are respectively slidably inserted into the inside of the guide slide (20), and the guide inner sleeve (13) is equidistantly slidably inserted into the inside of the door panel cover (21).

5. The sound-absorbing and sound-insulating wall panel structure of the low-noise box-type substation according to claim 4, characterized in that: The positioning block (10) has a round hole inside, the width of the support base (8) is smaller than the width of the air duct (9), the support side plate (18) has symmetrical movable grooves inside, and the top of the door panel cover (21) has positioning holes at equal intervals inside.

6. The sound-absorbing and sound-insulating wall panel structure of the low-noise box-type substation according to claim 5, characterized in that: The guide inner sleeve (13) has an installation hole at the side end near the support side slide rod (11) that is compatible with the limiting interception net (12). The third insert rod (33), the first insert rod (30), and the second insert rod (32) are respectively vertically aligned with the guide keyway (25).

7. The sound-absorbing and sound-insulating wall panel structure of the low-noise box-type substation according to claim 6, characterized in that: The guide carriage (20) has a square hole at its rear end, the door panel cover (21) is hollow inside, and the side end of the door panel cover (21) has a placement groove.

8. The sound-absorbing and sound-insulating wall panel structure of the low-noise box-type substation according to claim 7, characterized in that: The bottom cavity (27) has symmetrical air holes at the top and bottom, the positioning frame (26) has an air channel at the bottom inside, and the guide pipe (28) and the bottom cavity (27) are connected to the air channel. The top of the receiving cavity (36) has a guide hole.

9. The sound-absorbing and sound-insulating wall panel structure of the low-noise box-type substation according to claim 8, characterized in that: The positioning frame (26) is fixedly installed with an anti-detachment back plate at its rear end, and the guide keyway (25) is aligned with the anti-detachment back plate. The inner wall of the limiting interception net (12) is attached to the outer surface of the sound-absorbing inner core layer (7). The top of the support base frame (8) is provided with a placement groove. The positioning rod (15) is aligned with the positioning block (10). The outer surface of the displacement slider (17) is attached to the inner surface of the recessed groove (16).

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