An explosion-proof pressure relief wall for prefabricated substations and a prefabricated substation

Abstract

This invention belongs to the field of prefabricated substation technology, providing an explosion-proof pressure relief wall for prefabricated substations and a prefabricated substation itself. The explosion-proof pressure relief wall includes columns, mounting bases, buffer walls, and pressure relief walls. There are at least two columns arranged in a straight line. Mounting bases are positioned between any two adjacent columns. Each mounting base is equipped with a prefabricated wall panel structure, which consists of pressure relief walls and buffer walls. Buffer walls are arranged from top to bottom along the height of the mounting base in the first area of ​​the corresponding mounting base. Pressure relief walls are arranged from top to bottom along the height of the mounting base in the second area of ​​the corresponding mounting base. It can effectively alleviate the generated and accumulated explosive pressure during an explosion, achieving a buffering effect. The pressure relief walls quench the flames generated by the explosion, achieving both pressure relief and flame arrestion functions, and possessing higher pressure relief and flame retardant performance.

Description

Technical Field

[0001] This invention belongs to the field of prefabricated substation technology, and particularly relates to an explosion-proof pressure relief wall for prefabricated substations and a prefabricated substation. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] A substation is a location in a power system that transforms voltage and current, receiving and distributing electrical energy. The transformer is the main equipment in a substation; it's a power device that uses the principle of electromagnetic induction to convert alternating current into different voltages, currents, and other parameters. Oil-immersed transformers, in particular, have their core and windings immersed in an oil tank filled with insulating oil to enhance insulation and improve cooling. When a transformer experiences severe overload, short circuit, or insulation damage, the insulating oil, subjected to high temperatures or electric arcs, decomposes, producing a large amount of hydrocarbon gas mixture. This causes a rapid increase in internal pressure, leading to an explosion of the primary transformer and subsequent structural damage to the transformer tank. After the primary transformer explosion, insulating oil, the gas mixture, and oil mist are violently released through the rupture in the transformer tank. The leaking insulating oil forms a pool on the ground, which can ignite and cause a pool fire. When the leaked pyrolysis products—the gas mixture and oil mist—mix with air and ignite, a secondary explosion occurs. When these situations occur in confined or congested areas, they can lead to extremely powerful explosions, threatening personnel and equipment and causing severe socio-economic losses.

[0004] When constructing a substation, the explosion-proof and pressure-relief performance of the external walls must be considered to address the aforementioned transformer explosion scenario. Chinese invention patent CN111894174A proposes a prefabricated substation explosion-proof and pressure-relief wall and its construction method. It utilizes a composite wall made of horseshoe-shaped aluminum alloy profiled sheets, a buffer material layer, and a fiber-reinforced lightweight concrete layer as an explosion-proof and pressure-relief wall to address fire and explosion prevention issues. It also incorporates spring devices connected to I-beam steel columns to achieve flexible connections, thereby improving deformation capacity and buffering performance. However, because this patent is applied to fire and explosion isolation between transformers, it relies on double-sided fire and explosion protection to isolate the transformers. For the external walls of a substation, firstly, double-sided fire and explosion protection is unnecessary, leading to resource waste; secondly, to prevent damage to the external walls and the spread of the blast wave after a transformer explosion, higher requirements are placed on explosion-proof, fire-resistant, pressure-relief, and flame-retardant performance.

[0005] In addition, Chinese invention patent CN106368489B proposes a protective wall for explosions and fires involving main transformers. This wall relies on firewalls installed on the transformer's fire wall and site protection walls located at the transformer's distribution equipment area and along roadsides to prevent the spread of fire to adjacent transformers and surrounding electrical equipment, and to prevent reignition of the fire during an explosion. While applicable to the external walls of substations and possessing some fire resistance, its method of blocking the fire source—using the wall to enclose the fire—is ineffective at quickly releasing the shockwave and heat generated by the explosion. This leads to the accumulation of explosive pressure and flames in front of the wall, causing continuous pressure and increased load until the wall fails. Therefore, its explosion resistance is relatively low. Summary of the Invention

[0006] To address the technical problems mentioned above, this invention provides a prefabricated substation explosion-proof pressure relief wall and a prefabricated substation, which can effectively alleviate the generated and accumulated explosion pressure during an explosion, achieving a buffering effect. At the same time, the pressure relief wall quenches the flames generated by the explosion, thereby achieving the dual functions of pressure relief and fire prevention, and possessing higher pressure relief and flame retardant performance.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A prefabricated substation explosion-proof pressure relief wall, comprising:

[0009] Columns, mounting bases, buffer walls, and pressure relief walls;

[0010] There are at least two columns, and all columns are arranged in a straight line.

[0011] The mounting base is positioned between any two adjacent columns;

[0012] Each mounting base is equipped with a prefabricated wall panel structure; the prefabricated wall panel structure consists of a pressure relief wall and a buffer wall.

[0013] The buffer walls are arranged from top to bottom along the height direction of the mounting base on the first area of ​​the corresponding mounting base;

[0014] The pressure relief walls are arranged from top to bottom along the height direction of the mounting base on the second area of ​​the corresponding mounting base.

[0015] In one embodiment, the buffer wall includes a first plate, a second plate, and a buffer element;

[0016] The first plate is mounted on the corresponding mounting base and is located near the transformer.

[0017] The second plate is mounted on the mounting base and is located away from the transformer.

[0018] The buffer is disposed on the second plate and in contact with the first plate.

[0019] In one embodiment, the buffer includes a frame, deformable side panels, and a surrounding edge;

[0020] A contact plate that contacts the first plate is provided on one side of the frame.

[0021] One end of the deformable side plate is disposed on the other side of the frame and forms a funnel-shaped structure with the frame;

[0022] The surrounding edge is located at the other end of the deformable side plate and is connected to the second plate.

[0023] In one embodiment, the pressure relief wall includes a fire-resistant panel assembly, a ventilation panel assembly, and a partition panel assembly;

[0024] The fire-resistant plate assembly is mounted on the mounting base;

[0025] The ventilation panel assembly is located on the side of the flame arrestor panel assembly closest to the transformer.

[0026] The partition plate assembly is located on the outer side of the fire-resistant plate assembly away from the transformer, and the partition plate assembly is provided with a through channel.

[0027] In one embodiment, the fire-resistant plate assembly includes: a first plate frame assembly, an installation mesh, a clamping mesh, and a fire-resistant mesh;

[0028] The first plate frame assembly is snapped onto the corresponding mounting base;

[0029] The installation mesh is located inside the first plate frame group and near the outer end of the first plate frame group.

[0030] The clamping mesh is connected inside the first plate frame group and close to the inner end of the first plate frame group. The clamping mesh is parallel to the mounting mesh and can slide on the first plate frame group in a direction perpendicular to the first plate frame group. The clamping mesh is in contact with the ventilation plate group.

[0031] One side of the fire-resistant mesh is disposed on the installation mesh, and the other side is in contact with the clamping mesh; when the clamping mesh slides toward the installation mesh, it squeezes the fire-resistant mesh, causing the mesh size of the fire-resistant mesh to shrink.

[0032] In one embodiment, the fire-resistant mesh is obtained by stacking multiple pieces of metal mesh, and each piece of metal mesh is coated with fire-retardant paint.

[0033] In one embodiment, the fire-resistant mesh is composed of multiple sub-mesh blocks, each of which includes a mounting ring and a connecting rod; there are two mounting rings arranged opposite each other, and at least two connecting rods, each of which is inclined and has its two ends respectively disposed on the two mounting rings.

[0034] In one embodiment, the ventilation panel assembly includes: a second panel frame, a movable panel, a partition panel, and a control pipe assembly;

[0035] The second plate frame is movably snapped onto the first plate frame assembly, and a sealing plate is provided on the contact surface with the clamping mesh;

[0036] The movable plate is snapped onto the second plate frame, and the end located away from the sealing plate can be compressed and slid towards the sealing plate in a direction perpendicular to the second plate frame; the second plate frame, the sealing plate, and the movable plate constitute a placement cavity;

[0037] The partition plate is disposed within the second plate frame and divides the placement cavity into sub-cavities arranged in a matrix; each of the sealing plates is provided with a first through hole corresponding to the sub-cavity, and each of the movable plates is provided with a second through hole corresponding to the sub-cavity;

[0038] The control tubes are arranged one-to-one in the sub-cavity, and their two ends are respectively connected to the first through hole and the second through hole.

[0039] In one embodiment, each of the control tube assemblies includes: a first tube body, a second tube body, and a sealing plate;

[0040] The first tube is mounted on the sealing plate and its port is opposite to the first through hole.

[0041] One end of the second tube is movably sleeved on the outer wall of the first tube, and the other end of the second tube is set on the movable plate with its port facing the second through hole.

[0042] All the sealing pieces are petal-shaped structures, and one end of the sealing piece is distributed circumferentially on the inner wall of the second tube with the central axis of the second tube as the center.

[0043] When the second tube is not driven by the compression and sliding of the movable plate, the end of the sealing plate away from the first tube is in a closed state;

[0044] When the second tube is compressed and slid along the first tube by the movable plate, the end of the sealing plate away from the first tube is in an open state.

[0045] In one embodiment, the mounting base includes: a foundation column base and a traction rope;

[0046] The basic column bases are distributed in pairs at intervals and are set on two adjacent columns in a one-to-one correspondence.

[0047] The traction rope is installed between the foundation columns and is used to tighten and reinforce the foundation columns.

[0048] A second aspect of the present invention provides a prefabricated substation.

[0049] A prefabricated substation includes the explosion-proof pressure relief wall for prefabricated substations as described above.

[0050] The beneficial effects of this invention are:

[0051] (1) The present invention uses a combination of buffer wall and pressure relief wall with column and mounting base to block the explosion flame in a targeted manner and has better pressure relief performance. In particular, the pressure of the explosion accumulates on the buffer wall and causes the first plate to squeeze the buffer component. The buffer component reduces the pressure by its own deformation, thus having pressure relief performance.

[0052] (2) The pressure relief wall of the present invention forms a ventilation channel, so the flame will gather in its vicinity. When the flame passes through the pressure relief wall, the flame arrestor mesh is compressed due to the explosion, causing the mesh size to shrink. As the flame passes through the clamping mesh and the flame arrestor mesh in sequence, it will first undergo a first division and heat exchange with the metal after passing through the clamping mesh, and then undergo heat exchange with the metal after passing through the flame arrestor mesh, and be quenched, thus achieving flame arrest. At the same time, the pressure of the explosion accumulates on the pressure relief wall, which will cause the movable plate to move and the ventilation plate assembly to move as a whole, thereby also reducing the explosion pressure.

[0053] Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0054] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0055] Figure 1 This is a partial sectional view of the prefabricated substation explosion-proof pressure relief wall according to an embodiment of the present invention;

[0056] Figure 2 This is a partial exploded view of the prefabricated substation explosion-proof pressure relief wall according to an embodiment of the present invention;

[0057] Figure 3 A cross-sectional view of the buffer wall in an embodiment of the present invention;

[0058] Figure 4 This is an exploded view of the pressure relief wall according to an embodiment of the present invention;

[0059] Figure 5 This is a schematic diagram of the ventilation panel assembly according to an embodiment of the present invention;

[0060] Figure 6 This is a partial cross-sectional view of the ventilation panel assembly according to an embodiment of the present invention;

[0061] Figure 7 This is a diagram showing the structural changes of the control tube assembly under compression according to an embodiment of the present invention;

[0062] Figure 8 This is a cross-sectional view of the buffer component according to an embodiment of the present invention;

[0063] Figure 9 This is a schematic diagram of the structure of the buffer component according to an embodiment of the present invention;

[0064] Figure 10 This is a schematic diagram of the structure of the fire-resistant mesh according to an embodiment of the present invention;

[0065] Figure 11 This is a schematic diagram of the structure of a sub-network block according to an embodiment of the present invention;

[0066] Figure 12 This is a top view of a subnet block according to an embodiment of the present invention.

[0067] Among them, 1-column, 2-mounting base, 21-foundation column base, 22-traction rope, 3-buffer wall, 31-first plate, 32-second plate, 33-buffer component, 331-frame, 332-contact plate, 333-deformation side plate, 334-edge, 4-pressure relief wall, 41-fireproof plate assembly, 411-first plate frame assembly, 412-installation net, 413-clamping net, 414-fireproof net, 42-ventilation plate assembly, 421-second plate frame, 422-sealing plate, 4220-first through hole, 423-movable plate, 4230-second through hole, 424-partition plate, 43-partition plate assembly, 5-sub-net block, 50-grid plate, 51-installation ring, 52-connecting rod, 6-control pipe assembly, 61-first pipe body, 62-second pipe body, 63-sealing plate. Detailed Implementation

[0068] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0069] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0070] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0071] Example 1

[0072] Combination Figure 1 The prefabricated substation explosion-proof pressure relief wall of this embodiment includes a column 1, a mounting base 2, a buffer wall 3, and a pressure relief wall 4.

[0073] In this embodiment, there are multiple columns 1, arranged in a straight line. There are also multiple mounting bases 2, each positioned one-to-one between adjacent columns 1. Figures 1-3 As shown, there are multiple buffer walls 3, and the multiple buffer walls 3 are divided into batches with the same number as the mounting bases 2. Each batch of buffer walls 3 is arranged on the mounting base 2 from top to bottom along the height direction of the mounting base 2.

[0074] according to Figure 3 In this embodiment, the buffer wall 3 includes a first plate 31 disposed on the corresponding mounting base 2 and close to the transformer side, a second plate 32 disposed on the mounting base 2 and away from the transformer side, and a buffer member 33 disposed on the second plate 32 and in contact with the first plate 31.

[0075] As a preferred option, such as Figure 8 and Figure 9 As shown, the buffer 33 includes a frame 331, a deformable side plate 333, and a surrounding edge 334. A contact plate 332 is provided on one side of the frame 331 to contact the first plate 31. One end of the deformable side plate 333 is located on the other side of the frame 331 and forms a funnel-shaped structure with the frame 331. The surrounding edge 334 is located at the other end of the deformable side plate 333 and is connected to the second plate 32.

[0076] It should be noted that in other embodiments, those skilled in the art can set the specific structure of the buffer wall 3 and the buffer member 33 according to the actual situation, which will not be described in detail here.

[0077] like Figure 3 As shown, there are multiple pressure relief walls 4, which are divided into batches with the same number as the mounting bases 2. Each batch of pressure relief walls 4 is arranged from top to bottom along the height direction of the mounting base 2 in the empty space of the mounting base 2. The pressure relief walls 4 and the buffer walls 3 constitute a prefabricated wall panel structure installed on the mounting base 2.

[0078] Each pressure relief wall 4 includes a fire-resistant plate assembly 41 installed on the corresponding mounting base 2, a ventilation plate assembly 42 installed on the side of the fire-resistant plate assembly 41 near the transformer, and a partition plate assembly 43 installed on the outer side of the fire-resistant plate assembly 41 away from the transformer.

[0079] For example, the partition panel 43 is made of magnesium oxide board, and a through channel with a diameter of 0.5 mm is opened on the magnesium oxide board. The through channel is used to connect the outside of the substation explosion-proof pressure relief wall with the fire-resistant panel 41 so that the pressure relief wall 4 is in a ventilated state after the ventilation panel 42 is opened.

[0080] It should be noted that: such as Figure 4 As shown, there are multiple through channels, and the aperture can be 0.2-0.6 mm. The specific aperture size and number of through channels can be set by those skilled in the art according to the actual situation, and will not be described in detail here.

[0081] like Figure 4 As shown, the fire-resistant plate assembly 41 includes a first plate frame assembly 411, an installation mesh 412, a clamping mesh 413, and a fire-resistant mesh 414.

[0082] The first frame assembly 411 is snapped onto the mounting base 2. The mounting mesh 412 is disposed within the first frame assembly 411 and near its outer end. The clamping mesh 413 is snapped into the first frame assembly 411 and near its inner end. The clamping mesh 413 is parallel to the mounting mesh 412 and can slide on the first frame assembly 411 in a direction perpendicular to the first frame assembly 411. The clamping mesh 413 contacts the ventilation plate assembly 42. One side of the fire-resistant mesh 414 is disposed on the mounting mesh 412, and the other side contacts the clamping mesh 413. When the clamping mesh 413 slides towards the mounting mesh 412, it compresses the fire-resistant mesh 414, causing the mesh size of the fire-resistant mesh 414 to decrease.

[0083] Among them, the fire-resistant mesh 414 is made by stacking multiple pieces of metal mesh, and each piece of metal mesh is coated with fire-retardant paint.

[0084] In this embodiment, as Figure 5 and Figure 6 As shown, the ventilation panel assembly 42 includes a second panel frame 421, a movable panel 423, a partition panel 424, and a control pipe assembly 6.

[0085] The second plate frame 421 is movably engaged with the first plate frame assembly 411, and a sealing plate 422 is provided on the contact surface with the clamping mesh 413. A movable plate 423 is engaged with the second plate frame 421 and located at the end away from the sealing plate 422, and can be compressed and slid towards the sealing plate 422 in a direction perpendicular to the second plate frame 421. The second plate frame 421, sealing plate 422, and movable plate 423 constitute a placement cavity. A partition plate 424 is disposed within the second plate frame 421 and divides the placement cavity into sub-cavities arranged in a matrix. Each sealing plate 422 has a first through hole 4220 corresponding to a sub-cavity, and each movable plate 423 has a second through hole 4230 corresponding to a sub-cavity. Multiple control pipe assemblies 6 are provided, each corresponding to a sub-cavity, with both ends connected to the first through hole 4220 and the second through hole 4230, respectively. Dividing the placement cavity into sub-cavities arranged in a matrix can initially divide the flame during its propagation, allowing the flame to propagate into each sub-cavity with the airflow. Furthermore, the connection between the sub-cavities can be controlled using the control tube group 6.

[0086] It should be noted that in other embodiments, those skilled in the art can configure the ventilation panel assembly into other structures according to the actual situation, which will not be described in detail here.

[0087] like Figure 7 As shown, each control tube assembly 6 includes a first tube body 61, a second tube body 62, and a sealing plate 63. The first tube body 61 is mounted on the sealing plate 422 and its port is opposite to the first through hole 4220. One end of the second tube body 62 is movably sleeved on the outer wall of the first tube body 61, and the other end is mounted on the movable plate 423 and its port is opposite to the second through hole 4230.

[0088] There are multiple sealing plates 63, each with a petal-shaped structure. One end of each sealing plate 63 is circumferentially distributed on the inner wall of the second tube 62, centered on its central axis. When the second tube 62 is not compressed or slid by the movable plate 423, the ends of the sealing plates 63 furthest from the first tube 61 are closed. When the second tube 62 is compressed or slid along the first tube 61 by the movable plate 423, the ends of the sealing plates 63 furthest from the first tube 61 are open.

[0089] When no explosion occurs, the sealing plate 63 is in the closed state, and the first through hole 4220 and the second through hole 4230 are blocked and not connected by the sealing plate 63. When the movable plate 423 is compressed and slid, the sealing plate 63 will gradually open. When an explosion occurs, the powerful shock wave gathers in front of the movable plate 423, causing the movable plate 423 to be compressed and slid, and the sealing plate 63 will be in the fully open state.

[0090] It should be noted that in other embodiments, those skilled in the art can specifically configure the structure of the control tube group according to the actual situation, which will not be described in detail here.

[0091] like Figure 3 As shown, the mounting base 2 includes foundation column bases 21 and traction ropes 22. The foundation column bases 21 are spaced apart and correspondingly installed on adjacent columns 1. The traction ropes 22 are positioned between the foundation column bases 21 and used to tighten and reinforce them. By further tightening and reinforcing the foundation column bases 21 using the traction ropes 22, the buffer wall 3 and pressure relief wall 4 can not only be more securely installed on the foundation column bases 21, but also, in the event of an explosion, the deformation of the traction ropes 22 can reduce and buffer the pressure generated by the explosion.

[0092] In this embodiment, the two foundation column bases 21 are distributed on opposite sides with an inclination, and the cross-sectional structures of the first plate 31 and the first plate frame group 411 are both isosceles trapezoids. During actual assembly, the relatively larger side is located on the indoor side of the substation, and the relatively smaller side is located on the outdoor side of the substation. When an explosion occurs, the isosceles trapezoidal structure can effectively prevent the shock wave from knocking the first plate 31 and the first plate frame group 411 off the foundation column base 21.

[0093] In this embodiment, the column 1 is provided with a fastening bolt for securing the traction rope 22. The tension of the traction rope 22 can be adjusted by using the fastening bolt.

[0094] The working principle of the prefabricated substation explosion-proof pressure relief wall in this embodiment is as follows:

[0095] When no explosion occurs, the ventilation panel assembly is in the closed state. When the ventilation panel assembly is opened, it compresses the clamping mesh, causing the mesh to slide closer to the mounting mesh along a direction perpendicular to the first panel frame assembly, compressing the flame-retardant mesh and reducing its mesh size. At this time, the flame generated by the explosion will propagate into each sub-cavity with the airflow, initially divided by each sub-cavity, and further divided by the clamping mesh with the airflow. The explosion flame is quenched by the division of the sub-cavities and the clamping mesh, as well as by the heat absorption of the clamping mesh. The pressure generated by the explosion will be released through this channel and discharged outdoors. Simultaneously, the pressure from the explosion accumulates on the buffer wall, causing the first panel to compress the buffer component, which reduces the pressure through its own deformation.

[0096] It should be noted that pressure relief walls can form ventilation channels, which can cause flames to gather in their vicinity. Therefore, pressure relief walls serve a dual purpose of pressure relief and fire prevention, while buffer walls serve a pressure relief function.

[0097] The following is combined Figures 1-9 The working process of the prefabricated substation explosion-proof pressure relief wall in this embodiment will be described in detail below:

[0098] When no explosion occurs, the sealing plate 63 is in the closed state, and the first through hole 4220 and the second through hole 4230 are blocked and not connected by the sealing plate 63.

[0099] When there is an airflow difference between the indoor and outdoor areas of the substation, the movable plate 423 will be slightly compressed and slid, and the sealing plate 63 will open slightly to allow airflow.

[0100] When an explosion occurs, the powerful shock wave gathers in front of the movable plate 423, causing it to compress and slide, and the sealing plate 63 will be fully open. Further, the sealing plate 422 will compress the clamping mesh 413, which slides towards the mounting mesh 412 along the direction perpendicular to the first plate frame group 411, compressing the fire-resistant mesh 414 and causing the mesh size of the clamping mesh 413 to decrease. At this time, the flame generated by the explosion will propagate into each sub-cavity with the airflow, first being divided by each sub-cavity, and then further divided by the clamping mesh 413 with the airflow. The explosion flame is quenched by the division within the sub-cavities, the clamping mesh 413, and the heat absorption of the clamping mesh 413. The pressure generated by the explosion will be released through this channel to the outside. Simultaneously, the pressure from the explosion, gathered on the buffer wall 3, will cause the first plate 31 to compress the buffer member 33, which will reduce the pressure through its own deformation. It should be noted that the pressure relief wall 4 will form a ventilation channel, so the flame will gather in its vicinity. Therefore, the pressure relief wall 4 plays a dual role of pressure relief and fire prevention, while the buffer wall 3 plays a role of pressure relief.

[0101] It should be noted that: In this embodiment, the number of buffer walls 3 and pressure relief walls 4 is selected according to the assembly principle that the two pressure relief walls 4 are not adjacent. That is, selective assembly is carried out according to the assembly method that each pressure relief wall 4 is adjacent to a buffer wall 3, and the ratio of the number of pressure relief walls 4 to the number of buffer walls 3 is 1:1-8.

[0102] Among them, the traction ropes 22 are arranged in two rows along the thickness direction of the explosion-proof pressure relief wall, and the horizontal traction ropes 22 are interconnected and form a single structure, and as shown in the figure. Figure 2 As shown, the traction rope 22 on the side closest to the transformer passes through the first plate 31 when it corresponds to the buffer wall 3, and the traction rope 22 on the other side passes through the second plate 32 when it corresponds to the buffer wall 3.

[0103] like Figure 3As shown, when the traction rope 22 corresponds to the pressure relief wall 4, both traction ropes 22 pass through the fire arrestor plate assembly 41, and the two traction ropes 22 respectively pass through the installation net 412 and the clamping net 413. When an explosion occurs, the sliding of the first plate 31, the deformation of the second plate 32, and the sliding of the installation net 412 will all cause the traction rope 22 to be stressed and deformed, thus tightening it. This transfers the force to the entire traction rope 22 for reduction, effectively preventing the strong shock wave from accumulating at a certain point and causing a large instantaneous impact on the buffer wall 3 or pressure relief wall 4 at that point, leading to damage.

[0104] Example 2

[0105] The difference between this embodiment and Embodiment 1 is that: Figure 10 As shown, the fire-resistant mesh 414 consists of multiple sub-mesh blocks 5, each sub-mesh block 5 including a mounting ring 51 and a connecting rod 52. Figure 11 As shown, there are two mounting rings 51, which are arranged opposite to each other. There are multiple connecting rods 52, which are inclined and have their ends respectively set on the two mounting rings 51.

[0106] Specifically, after the fire-resistant mesh 414 is squeezed by the clamping mesh 413, the distance between the two mounting rings 51 becomes smaller, which further causes the mesh channel formed by the connecting rods 52 to become denser, resulting in a smaller mesh size.

[0107] In this embodiment, two adjacent sub-mesh blocks 5 are connected by corresponding mounting rings 51. The connected mounting rings 51 form a mesh plate 50. One mesh plate 50 is set on the mounting mesh 412, and the other mesh plate 50 is in contact with the clamping mesh 413.

[0108] like Figure 11 and Figure 12 As shown, in this embodiment, the mounting ring 51 is a regular polygon, one end of the connecting rod 52 is disposed on the side of one of the regular polygons of the mounting ring 51, and the other end is disposed on the adjacent side of the other mounting ring 51 and the corresponding side of that side. The connecting rod 52 is distributed in a spiral shape.

[0109] like Figure 11 and Figure 12 As shown, the connecting rods 52 are respectively set at the vertices and midpoints of the polygonal sides of the mounting ring 51.

[0110] It is understood that in other embodiments, the shape of the mounting ring 51 may also be other shapes, such as a circle, etc. Those skilled in the art can make specific settings according to the actual situation, which will not be described in detail here.

[0111] It should be noted that in this embodiment, the sub-mesh block 5 is made of metal, and both the mounting ring 51 and the connecting rod 52 are coated with fire-retardant paint. After the explosion, the connecting rod 52 will deform under pressure, and will spring back to its original position after the shock wave dissipates and the force is completely reduced. The connecting rod 52 will form a sufficiently small slit between the two mounting rings 51 to quench the flame. Figure 11 and Figure 12 This is a structural diagram of the sub-grid block. To facilitate understanding of its dimensions, the effective area of ​​the actual mounting ring 51 can be specifically set by those skilled in the art according to the actual situation, for example, 6-9mm. 2 .

[0112] Example 3

[0113] This embodiment provides a prefabricated substation, which includes the prefabricated substation explosion-proof pressure relief wall as described in either Embodiment 1 or Embodiment 2 above.

[0114] It should be noted that, except for the explosion-proof pressure relief wall, the prefabricated substation in this embodiment can be implemented using existing structures, which will not be elaborated here.

[0115] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A prefabricated explosion-proof pressure relief wall of a substation, characterized in that, include: The column, mounting base, buffer wall, and pressure relief wall; each pressure relief wall includes a fire-resistant panel assembly, a ventilation panel assembly, and a partition panel assembly. The fire-resistant plate assembly is mounted on the mounting base; The ventilation panel assembly is located on the side of the flame arrestor panel assembly closest to the transformer. The partition plate assembly is disposed on the outer side of the fire-resistant plate assembly away from the transformer, and the partition plate assembly is provided with a through channel; the fire-resistant plate assembly includes: a first plate frame assembly, an installation mesh, a clamping mesh, and a fire-resistant mesh; The first plate frame assembly is snapped onto the corresponding mounting base; The installation mesh is located inside the first plate frame group and near the outer end of the first plate frame group. The clamping mesh is connected inside the first plate frame group and close to the inner end of the first plate frame group. The clamping mesh is parallel to the mounting mesh and can slide on the first plate frame group in a direction perpendicular to the first plate frame group. The clamping mesh is in contact with the ventilation plate group. One side of the fire-resistant mesh is disposed on the installation mesh, and the other side is in contact with the clamping mesh; when the clamping mesh slides toward the installation mesh, it squeezes the fire-resistant mesh, causing the mesh size of the fire-resistant mesh to shrink. The fire-resistant mesh is composed of multiple sub-mesh blocks, each sub-mesh block including mounting rings and connecting rods; there are two mounting rings arranged opposite each other, and there are at least two connecting rods, each connecting rod is inclined and its two ends are respectively set on the two mounting rings; There are at least two columns, and all columns are arranged in a straight line. The mounting base is positioned between any two adjacent columns; Each mounting base is equipped with a prefabricated wall panel structure; the prefabricated wall panel structure consists of a pressure relief wall and a buffer wall. The buffer walls are arranged from top to bottom along the height direction of the mounting base on the first area of ​​the corresponding mounting base; The pressure relief walls are arranged from top to bottom along the height direction of the mounting base on the second area of ​​the corresponding mounting base.

2. The assembled substation explosion vent wall of claim 1, wherein, The buffer wall includes a first plate, a second plate, and a buffer component; The first plate is mounted on the corresponding mounting base and is located near the transformer. The second plate is mounted on the mounting base and is located away from the transformer. The buffer is disposed on the second plate and in contact with the first plate.

3. The assembled substation explosion vent wall of claim 2, wherein, The buffer component includes a frame, deformable side panels, and a surrounding edge; A contact plate that contacts the first plate is provided on one side of the frame. One end of the deformable side plate is disposed on the other side of the frame and forms a funnel-shaped structure with the frame; The surrounding edge is located at the other end of the deformable side plate and is connected to the second plate.

4. The assembled substation explosion vent wall of claim 1, wherein, The ventilation panel assembly includes: a second panel frame, a movable panel, a partition panel, and a control pipe assembly; The second plate frame is movably snapped onto the first plate frame assembly, and a sealing plate is provided on the contact surface with the clamping mesh; The movable plate is snapped onto the second plate frame, and the end located away from the sealing plate can be compressed and slid towards the sealing plate in a direction perpendicular to the second plate frame; the second plate frame, the sealing plate, and the movable plate constitute a placement cavity; The partition plate is disposed within the second plate frame and divides the placement cavity into sub-cavities arranged in a matrix; each of the sealing plates is provided with a first through hole corresponding to the sub-cavity, and each of the movable plates is provided with a second through hole corresponding to the sub-cavity; The control tube groups are arranged one-to-one in the sub-cavities, and their two ends are respectively connected to the first through hole and the second through hole; each control tube group includes: a first tube body, a second tube body and a sealing plate; The first tube is mounted on the sealing plate and its port is opposite to the first through hole. One end of the second tube is movably sleeved on the outer wall of the first tube, and the other end of the second tube is set on the movable plate with its port facing the second through hole. All the sealing pieces are petal-shaped structures, and one end of the sealing piece is distributed circumferentially on the inner wall of the second tube with the central axis of the second tube as the center. When the second tube is not driven by the compression and sliding of the movable plate, the end of the sealing plate away from the first tube is in a closed state; When the second tube is compressed and slid along the first tube by the movable plate, the end of the sealing plate away from the first tube is in an open state.

5. The assembled substation explosion vent wall of claim 1, wherein, The mounting base includes: a foundation column base and a traction rope; The basic column bases are distributed in pairs at intervals and are set on two adjacent columns in a one-to-one correspondence. The traction rope is installed between the foundation columns and is used to tighten and reinforce the foundation columns.

6. A prefabricated electrical substation, characterized by Includes the prefabricated substation explosion-proof pressure relief wall as described in any one of claims 1-5.

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