Fireproof and anti-explosion plugging structure capable of being repeatedly disassembled and assembled

Abstract

The fireproof and anti-explosion plugging structure capable of being repeatedly disassembled and assembled comprises composite plates and a keel frame, the keel frame comprises a counter-fire face frame and a back-fire face frame, and the composite plates are spliced on the counter-fire face frame and the back-fire face frame of the keel frame to form fireproof and anti-explosion composite plates; the splicing gaps of the composite plates are filled and sealed by fireproof materials; and gaps between the composite plates on the counter-fire surface frame and the back-fire surface frame and the converter transformer bushing are filled and sealed by fireproof materials. According to the fireproof and anti-explosion plugging structure, the fireproof and anti-explosion composite plates are modularized, the detachable stainless steel keel frame is combined, flexible arrangement of the fireproof and anti-explosion plugging structure in different construction spaces is achieved, the construction difficulty is low, and the modularized composite plates are convenient to overhaul, disassemble and assemble; the fireproof and anti-explosion panels made of various materials are overlapped to form the integrated composite board, so that a good fireproof and anti-explosion effect is achieved; the composite board adopts a staggered joint splicing method, and gaps are filled with fireproof materials for sealing, so that the fireproof capability of the structure is improved.

Description

Technical Field

[0001] This application belongs to the field of fireproof and explosion-proof technology, specifically relating to a reusable fireproof and explosion-proof sealing structure. Background Technology

[0002] The valve hall is mainly used to house converter valves and related equipment. The sealing of the bushing opening on the valve side of the converter transformer is a weak point in the firewall of the valve hall. In the event of an internal fault, there is a possibility of fire and explosion accidents. The reliability of the converter station operation directly affects the power transmission and the safety of personnel and equipment.

[0003] The existing converter valve side bushing sealing scheme for converter stations mainly adopts a two-layer structure design of "fireproof sealing system + explosion-proof door". However, the separate design of fireproof sealing and explosion-proof door has exposed significant problems in actual projects: First, gaps exist in the opening, which cannot guarantee complete resistance to blast impact; Second, the size and weight are large, the construction space is narrow, the construction is difficult, and the maintenance and disassembly are cumbersome and time-consuming; Third, the cost of fireproof boards and explosion-proof doors is very high, and large-scale promotion is not economically viable; Fourth, a single structure is difficult to meet the requirements of explosion resistance and fire resistance.

[0004] To improve the fire safety of converter stations, there is an urgent need for a fireproof and explosion-proof sealing structure that occupies little space, has strong explosion-proof and fire-resistant capabilities, and can be repeatedly disassembled and reassembled. Utility Model Content

[0005] To address at least one of the aforementioned deficiencies, this application proposes a reusable fireproof and explosion-proof sealing structure for integrated fireproof and explosion-proof sealing of the bushing opening on the valve side of a valve hall converter transformer.

[0006] Embodiments of this application provide a reusable fireproof and explosion-proof sealing structure, comprising a composite panel and a keel frame, wherein the composite panel and the keel frame are detachably connected.

[0007] The composite panel includes a first composite panel, a second composite panel, a third composite panel, a fourth composite panel, and a staggered composite panel. The keel frame includes a fire-facing frame and a back-fire frame. The fire-facing frame and the back-fire frame are connected in parallel by several supporting keels. The gap between the fire-facing frame and the back-fire frame is filled with fireproof material.

[0008] The fire-facing frame is divided into a first region, a second region, and a staggered region, with the staggered region located between the first region and the second region. The first composite panel is disposed in the first region, the second composite panel is disposed in the second region, and the staggered composite panel is disposed in the staggered region. The unfired frame is divided into a third region and a fourth region, with the third composite panel disposed in the third region and the fourth composite panel disposed in the fourth region.

[0009] Alternatively, the fire-facing frame can be divided into a first region and a second region, with the first composite panel disposed in the first region and the second composite panel disposed in the second region; or the unfire-facing frame can be divided into a third region, a fourth region, and a staggered region, with the staggered region located between the third region and the fourth region, the third composite panel disposed in the third region, the fourth composite panel disposed in the fourth region, and the staggered composite panel disposed in the staggered region.

[0010] After the first composite plate / third composite plate is disposed in the first region / third region, it forms holes corresponding to the bushings of the converter transformer. The holes in the first region and the third region are located in opposite positions.

[0011] Preferably, the composite board includes an explosion-proof board, a calcium silicate fireproof board, a ceramic fiber board, a magnesium oxide board, ceramic fiber paper, and a stainless steel board stacked in sequence, wherein the stainless steel board of the composite board set on the fire-facing frame is close to the unfire-facing frame, and the stainless steel board of the composite board set on the unfire-facing frame is close to the fire-facing frame.

[0012] Preferably, the calcium silicate fireproof board and the ceramic fiber board are bonded together with adhesive, the ceramic fiber board and the magnesium oxide board are bonded together with adhesive, and the explosion-proof board, calcium silicate fireproof board, ceramic fiber board, magnesium oxide board, ceramic fiber paper and stainless steel board are nailed together to form an integrated composite board.

[0013] Preferably, the explosion-proof plate includes a first stainless steel plate, a second stainless steel plate, and a concrete plate located between the first stainless steel plate and the second stainless steel plate.

[0014] Preferably, the concrete slab is an ultra-high performance concrete slab with a compressive strength of not less than 150 MPa, a flexural strength of not less than 20 MPa, and a heat resistance of not less than 1100℃.

[0015] Preferably, the first / third region of the fire-facing frame / backfire-facing frame includes four first main keels as a first border, two second main keels within the first border, and several secondary keels between the two second main keels.

[0016] The four first main keels that form the first frame are connected end to end to form a rectangular frame; the second main keel is set inside the first frame, parallel to the first main keel located above and below the first frame, and connected to the first main keel located to the left and right of the first frame; a plurality of secondary keels are set between the two second main keels, the plurality of secondary keels including a first keel perpendicular to the second main keel, a second keel parallel to the second main keel, and a third keel connected to the first keel and the second main keel;

[0017] The inscribed circular hole formed by the second main keel, the first keel and the third keel serves as the hole;

[0018] The second / fourth region of the fire-facing frame / backfire-facing frame includes four first main keels serving as the second border, several second main keels horizontally inside the second border, and several fourth secondary keels vertically.

[0019] The four first main keels that form the second frame are connected end to end to form a rectangular frame. The second main keel is located inside the second frame, parallel to the first main keel located above and below the second frame, and connected to the first main keel located to the left and right of the second frame. The plurality of fourth secondary keels are connected to the first main keel located above and below the second frame, and perpendicular to the first main keel located above and below the second frame.

[0020] The first main keel at the left and right positions of the first frame and the first main keel at the left and right positions of the second frame are connected accordingly;

[0021] The main keel is connected to the main keel, the main keel to the secondary keel, and the secondary keel to the secondary keel through a detachable structure.

[0022] Preferably, the thickness of the explosion-proof plate is 8-16 mm;

[0023] And / or, the thickness of the calcium silicate fireproof board is 8-16 mm;

[0024] And / or, the thickness of the ceramic fiberboard is 4 to 10 mm;

[0025] And / or, the thickness of the magnesium oxide board is 8-15 mm;

[0026] And / or, the ceramic fiber paper has a thickness of 2 mm;

[0027] And / or, the thickness of the stainless steel plate is 0.2 to 1 mm.

[0028] Preferably, the width of the main keel in the horizontal direction is 160mm and the thickness is 40-80mm.

[0029] And / or, the width of the main keel in the longitudinal direction is 100mm and the thickness is 40-80mm.

[0030] And / or, the width of the secondary keel is 80mm and the thickness is 40-80mm.

[0031] The thickness of the main keel and the secondary keel should be consistent.

[0032] Preferably, stainless steel edging is provided on the fire-facing frame and the unfacing surface, and the stainless steel edging covers the first main keel at the lower left and right positions of the first frame and the first main keel at the upper left and right positions of the second frame.

[0033] And / or, stainless steel pressure strips are provided at the positions of the second main keel, the first keel and the third keel that form the inscribed circle.

[0034] Based on the above, this application provides a reusable fireproof and explosion-proof sealing structure. By modularizing fireproof and explosion-proof composite panels and combining them with a detachable stainless steel keel frame, the fireproof and explosion-proof sealing structure can be flexibly set up in different construction spaces. The construction difficulty is low, and the modular composite panels are easy to inspect and disassemble. Fireproof and explosion-proof panels of various materials are stacked to form an integrated composite panel, which has good fireproof and explosion-proof effects. The composite panels adopt a staggered splicing method, and the gaps are filled and sealed with fireproof materials to improve the fire resistance of the structure. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 A schematic diagram of the fire-facing side of a reusable fireproof and explosion-proof sealing structure provided in this application.

[0037] Figure 2 A schematic diagram of the unexposed side of a reusable fireproof and explosion-proof sealing structure provided in this application.

[0038] Figure 3 A schematic diagram of the fire-facing frame of a reusable fireproof and explosion-proof sealing structure provided in this application.

[0039] Figure 4 A schematic diagram of the unexposed frame of a reusable fireproof and explosion-proof sealing structure provided in this application.

[0040] Figure 5A cross-sectional view of a composite panel for a reusable fireproof and explosion-proof sealing structure provided in this application.

[0041] Figure 6 A cross-sectional view of an explosion-proof plate for a reusable fireproof and explosion-proof sealing structure provided in this application.

[0042] Figure 7 A schematic diagram of a stainless steel edging structure for a reusable fireproof and explosion-proof sealing structure provided in this application.

[0043] Figure 8 A schematic diagram of a stainless steel pressure strip for a reusable fireproof and explosion-proof sealing structure provided in this application.

[0044] In the diagram: 1. Keel frame; 101. Fire-facing frame; 102. Fire-resistant frame; 2. First zone; 3. First composite panel; 4. Second zone; 5. Second composite panel; 6. Third zone; 7. Third composite panel; 8. Fourth zone; 9. Fourth composite panel; 10. Staggered composite panel; 11. Explosion-resistant panel; 111. First stainless steel perforated plate; 112. Second stainless steel perforated plate; 113. Concrete slab; 12. Calcium silicate fireproof board; 13. Ceramic fiber board; 14. Magnesium oxide board; 15. Ceramic fiber paper; 16. Stainless steel plate; 17. First main keel; 18. Second main keel; 19. First keel; 20. Second keel; 21. Third keel; 22. Fourth keel; 23. Supporting keel; 24. Stainless steel edging; 25. Stainless steel strip. Detailed Implementation

[0045] This application provides a reusable fireproof and explosion-proof sealing structure. To make the purpose, technical solution, and effects of this application clearer and more explicit, the following detailed description is provided with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining this application and are not intended to limit this application.

[0046] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this application means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connections or wireless coupling. The term “and / or” as used herein includes all or any units and all combinations of one or more associated listed items.

[0047] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0048] The application content will be further explained below with reference to the accompanying drawings and the description of the embodiments.

[0049] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this application. To better illustrate the following embodiments, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product; it is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0050] Example 1

[0051] This application proposes a reusable, detachable, fireproof, and explosion-proof sealing structure, including a composite panel and a keel frame 1, such as... Figure 1-4 As shown, the composite panel includes a first composite panel 3, a second composite panel 5, a third composite panel 7, a fourth composite panel 9, and a staggered composite panel 10. The keel frame 1 includes a fire-facing frame 101 and a fire-resistant frame 102. The fire-facing frame 101 and the fire-resistant frame 102 are connected in parallel relative to each other by a plurality of supporting keels 23. The gap between the fire-facing frame 101 and the fire-resistant frame 102 is filled with fireproof material.

[0052] In one optional embodiment, the fire-facing frame 101 is divided into a first region 2, a second region 4, and a staggered region, with the staggered region located between the first region 2 and the second region 4. A first composite panel 3 is disposed in the first region 2 and detachably connected to the fire-facing frame 101. A second composite panel 5 is disposed in the second region 4 and detachably connected to the fire-facing frame 101. The staggered composite panel 10 is disposed in the staggered region. The unfired frame 102 is divided into a third region 6 and a fourth region 8, with a third composite panel 7 disposed in the third region 6 and detachably connected to the unfired frame 102. A fourth composite panel 9 is disposed in the fourth region 8 and detachably connected to the fire-facing frame 101.

[0053] In another optional embodiment, the fire-facing frame 101 can be divided into a first region 2 and a second region 4 by region. The first composite plate 3 is disposed in the first region 2 and is detachably connected to the fire-facing frame 101. The second composite plate 5 is disposed in the second region 4 and is detachably connected to the fire-facing frame 101. The unfire-facing frame 102 is divided into a third region 6, a fourth region 8, and a staggered region by region. The staggered region is located between the third region 6 and the fourth region 8. The third composite plate 7 is disposed in the third region 6 and is detachably connected to the unfire-facing frame 102. The fourth composite plate 9 is disposed in the fourth region 8 and is detachably connected to the fire-facing frame 101. The staggered composite plate 10 is disposed in the staggered region.

[0054] For example, in this embodiment, the two staggered composite panels 10 are arranged between the third region 6 and the fourth region 8. The position of the staggered composite panel 10 corresponds to the connection seam position of the first region 2 and the second region 4 on the fire-facing frame. The staggered composite panels 10 are staggered on the fire-facing frame or the unfire-facing frame to prevent flames from passing through the gaps.

[0055] In this embodiment, the first region 2 includes four first composite panels 3 of the same size and rectangular shape. To facilitate splicing, a certain distance is reserved at the splicing point of the first composite panels 3. The sum of the areas of the four first composite panels 3 is slightly smaller than the area of ​​the fire-facing frame 101. In specific implementation, multiple first composite panels 3 can be set according to the area of ​​the fire-facing frame 101 and the specifications of the first composite panels 3, such as 1×2, 2×3, 3×3, etc.

[0056] The second region 4 includes four second composite plates 5 with semi-circular openings. The circular hole formed by splicing two second composite plates 5 with matching openings is the cross-sectional shape of the converter transformer bushing. The gap between the second composite plate 5 and the converter transformer bushing is filled and sealed with 3M1000NS fireproof sealant to improve the sealing performance of the sealing device.

[0057] Similarly, the third region 6 includes four rectangular third composite panels 7 of the same size. The sum of the areas of the four third composite panels 7 is slightly smaller than the area of ​​the backfire frame 102. In specific implementation, different numbers of third composite panels 7 can be set according to the area of ​​the backfire frame 102 and the specifications of the third composite panels.

[0058] Similarly, the fourth region 8 includes four fourth composite plates 9 with semi-circular openings. The circular hole formed by splicing two fourth composite plates 9 with matching openings is the cross-sectional shape of the converter transformer bushing. The gap between the fourth composite plate 9 and the converter transformer bushing is filled and sealed with fireproof material to improve the sealing performance of the sealing device.

[0059] In a preferred embodiment, such as Figure 5 As shown, the composite panel structure, from the outside to the inside, consists of: an explosion-proof panel 11, a calcium silicate fireproof panel 12, a ceramic fiber panel 13, a magnesium oxide panel 14, a ceramic fiber paper 15, and a stainless steel panel 16. The stainless steel panel 16 of the composite panel set on the fire-facing frame 101 is closer to the fire-repellent frame 102, and the stainless steel panel 16 of the composite panel set on the fire-repellent frame 102 is closer to the fire-facing frame 101.

[0060] Specifically, the explosion-proof board 11 has a thickness of 8mm, the calcium silicate fireproof board 12 has a thickness of 8mm, the ceramic fiber board 13 has a thickness of 4mm, the magnesium oxide board 14 has a thickness of 8mm, the ceramic fiber paper 15 has a thickness of 2mm, and the stainless steel board 16 has a thickness of 0.2mm.

[0061] Optional, such as Figure 6 As shown, the explosion-proof plate 11 includes a first stainless steel perforated plate 111, a second stainless steel perforated plate 112, and a concrete plate 112 located between the first stainless steel perforated plate 111 and the second stainless steel perforated plate 112. The thickness of the first stainless steel perforated plate 111 and the second stainless steel perforated plate 112 is 0.1 mm. The concrete plate 112 can be made of ultra-high performance concrete with a compressive strength of not less than 150 MPa, a flexural strength of not less than 20 MPa, and a heat resistance of not less than 1100℃, thereby improving the explosion-proof and fire-resistant performance of the integrated fireproof and explosion-proof sealing.

[0062] Optionally, the material between the first stainless steel perforated plate 111 and the second stainless steel perforated plate 112 can also be cement fiberboard.

[0063] In specific implementation, the calcium silicate fireproof board 12, the ceramic fiber board 13, and the magnesium oxide board 14 are bonded with high-temperature resistant adhesive, and the explosion-proof board 11, calcium silicate fireproof board 12, ceramic fiber board 13, magnesium oxide board 14, ceramic fiber paper 15, and stainless steel plate 16 are nailed together into an integrated composite board using air gun nails (200-300mm spacing, positive and negative nails). The overall thickness of the composite board is 100mm, the explosion-proof reflective overpressure peak value is above 800KPa, and it meets the fire resistance limit of more than 4 hours under the standard of HC (hydrocarbon) temperature rise curve.

[0064] In a preferred embodiment, the first region 2 / third region 6 of the fire-facing frame 101 / off-fire frame 102 includes four first main keels 17 serving as a first border, two second main keels 18 within the first border, and a plurality of secondary keels between the two second main keels 18.

[0065] The four first main keels 17, which form the first frame, are connected end to end to form a rectangular frame; the second main keel 18 is disposed inside the first frame, parallel to the first main keels 17 located at the top and bottom of the first frame, and connected to the first main keels 17 located at the left and right of the first frame; a plurality of secondary keels are disposed between the two second main keels 18, including a first keel 19 perpendicular to the second main keel 18, a second keel 20 parallel to the second main keel 18, and a third keel 21 connected to the first keel 19 and the second main keel 18;

[0066] The inscribed circular hole formed by the second main keel 18, the first keel 19 and the third keel 21 serves as the hole, and the hole corresponds to the bushing of the converter transformer.

[0067] The second region 4 / fourth region 6 of the fire-facing frame 101 / fire-repellent frame 102 includes four first main keels 17 serving as the second border, several second main keels 18 horizontally inside the second border, and several fourth secondary keels 22 vertically.

[0068] The four first main keels 17, which form the second frame, are connected end to end to form a rectangular frame. The second main keel 18 is located inside the second frame, parallel to the first main keels 17 located at the top and bottom of the second frame, and connected to the first main keels 17 located at the left and right of the second frame. The plurality of fourth secondary keels 22 are connected to the first main keels 17 located at the top and bottom of the second frame, and are perpendicular to the first main keels 17 located at the top and bottom of the second frame.

[0069] The first main keel 17 at the left and right positions of the first frame and the first main keel 17 at the left and right positions of the second frame are connected accordingly.

[0070] In specific implementation, the first main keel 17, which serves as the frame, and the two second main keels 18 can be connected using M16 non-magnetic stainless steel bolts with a strength grade of A2 group 80. The bolt consists of one ordinary nut, one tightening nut, and two flat washers (one on the bolt head side and one on the nut). The bolt length is laid out according to the length of 2 to 3 threads exposed above the nut, and the bolt spacing is 150mm. The main keel and the secondary keel can be connected by welding, with full welding on both sides. The welded ends are beveled around all sides, and the welding material used is A102 (E308-16). Alternatively, they can be connected by a detachable structure.

[0071] In a preferred embodiment, similar to the first region 2 and the second region 4,

[0072] The third region 6 includes four first main keels 17 forming a first border, two second main keels 18 within the first border, and several secondary keels between the two second main keels 18.

[0073] The four first main keels 17, which form the first frame, are connected end to end to form a rectangular frame; the second main keel 18 is disposed inside the first frame, parallel to the first main keels 17 located at the top and bottom of the first frame, and connected to the first main keels 17 located at the left and right of the first frame; a plurality of secondary keels are disposed between the two second main keels 18, including a first keel 19 perpendicular to the second main keel, a second keel 20 parallel to the second main keel 18, and a third keel 21 connected to the first keel 19 and the second main keel 18;

[0074] The inscribed circular hole formed by the second main keel 18, the first keel 19 and the third keel 21 serves as the hole, and the hole corresponds to the bushing of the converter transformer.

[0075] The fourth region includes four first main keels 17 forming a second border, several second main keels 18 horizontally inside the second border, and several fourth secondary keels 22 vertically.

[0076] The four first main keels 17, which form the second frame, are connected end to end to form a rectangular frame. The second main keel 18 is located inside the second frame, parallel to the first main keels 17 located at the top and bottom of the second frame, and connected to the first main keels 17 located at the left and right of the second frame. The plurality of fourth secondary keels 22 are connected to the first main keels 17 located at the top and bottom of the second frame, and are perpendicular to the first main keels 17 located at the top and bottom of the second frame.

[0077] The first main keel 17 at the left and right positions of the first frame and the first main keel 17 at the left and right positions of the second frame are connected accordingly.

[0078] Preferably, the fire-facing frame 101 and the fire-repellent frame 102 are connected and supported by several supporting keels 23, and fireproof material is filled between the two frames. The fireproof material can be fireproof cotton or other materials with good fireproof effect.

[0079] In this embodiment, the width of the first main keel 17 and the second main keel 18 located at the top and bottom positions of the first and second borders is 160mm, the width of the first main keel 17 located at the left and right positions of the first and second borders is 100mm, the width of the first keel, the second keel, the third keel and the fourth keel is 80mm, and the thickness of all main keels and all secondary keels is consistent, which is 40mm.

[0080] In one alternative implementation, such as Figure 7 As shown, stainless steel edging 24 is provided on the fire-facing frame 101 and the fire-repellent frame 102. The stainless steel edging 24 covers the first main keel 17 at the lower left and right positions of the first frame and the first main keel 17 at the upper left and right positions of the second frame, thereby improving the sealing performance and fireproof and explosion-proof strength of the entire sealing structure.

[0081] Further, such as Figure 8 As shown, stainless steel pressure strips 25 can also be installed at the positions of the second main keel 18, the first keel 19 and the third keel 21 that form the inscribed circle to improve the sealing performance and fire resistance and explosion resistance of the gap between the composite plate and the converter transformer bushing.

[0082] Example 2

[0083] This application proposes a reusable, detachable, fireproof, and explosion-proof sealing structure, comprising a composite panel and a keel frame 1, such as... Figure 1-4 The composite panel shown includes a first composite panel 3, a second composite panel 5, a third composite panel 7, a fourth composite panel 9, and a staggered composite panel 10. The keel frame 1 includes a fire-facing frame 101 and a back-facing frame 102. The fire-facing frame 101 and the back-facing frame 102 are connected in parallel relative to each other by a plurality of supporting keels 23. The gap between the fire-facing frame 101 and the back-facing frame 102 is filled with fireproof material.

[0084] In one optional embodiment, the fire-facing frame 101 is divided into a first region 2, a second region 4, and a staggered region, with the staggered region located between the first region 2 and the second region 4. A first composite panel 3 is disposed in the first region 2 and detachably connected to the fire-facing frame 101. A second composite panel 5 is disposed in the second region 4 and detachably connected to the fire-facing frame 101. The staggered composite panel 10 is disposed in the staggered region. The unfired frame 102 is divided into a third region 6 and a fourth region 8, with a third composite panel 7 disposed in the third region 6 and detachably connected to the unfired frame 102. A fourth composite panel 9 is disposed in the fourth region 8 and detachably connected to the fire-facing frame 101.

[0085] In another optional embodiment, the fire-facing frame 101 can be divided into a first region 2 and a second region 4 by region. The first composite plate 3 is disposed in the first region 2 and is detachably connected to the fire-facing frame 101. The second composite plate 5 is disposed in the second region 4 and is detachably connected to the fire-facing frame 101. The unfire-facing frame 102 is divided into a third region 6, a fourth region 8, and a staggered region by region. The staggered region is located between the third region 6 and the fourth region 8. The third composite plate 7 is disposed in the third region 6 and is detachably connected to the unfire-facing frame 102. The fourth composite plate 9 is disposed in the fourth region 8 and is detachably connected to the fire-facing frame 101. The staggered composite plate 10 is disposed in the staggered region.

[0086] For example, in this embodiment, the two staggered composite panels 10 are arranged between the third region 6 and the fourth region 8. The position of the staggered composite panel 10 corresponds to the connection seam position of the first region 2 and the second region 4 on the fire-facing frame. The staggered composite panels 10 are staggered on the fire-facing frame or the unfire-facing frame to prevent flames from passing through the gaps.

[0087] In this embodiment, the first region 2 includes four first composite panels 3 of the same size and rectangular shape. To facilitate splicing, a certain distance is reserved at the splicing point of the first composite panels 3. The sum of the areas of the four first composite panels 3 is slightly smaller than the area of ​​the fire-facing frame 101. In specific implementation, multiple first composite panels 3 can be set according to the area of ​​the fire-facing frame 101 and the specifications of the first composite panels 3, such as 1×2, 2×3, 3×3, etc.

[0088] The second region 4 includes four second composite plates 5 with semi-circular openings. The circular hole formed by splicing two second composite plates 5 with matching openings is the cross-sectional shape of the converter transformer bushing. The gap between the second composite plate 5 and the converter transformer bushing is filled and sealed with 3M1000NS fireproof sealant to improve the sealing performance of the sealing device.

[0089] Similarly, the third region 6 includes four rectangular third composite panels 7 of the same size. The sum of the areas of the four third composite panels 7 is slightly smaller than the area of ​​the backfire frame 102. In specific implementation, different numbers of third composite panels 7 can be set according to the area of ​​the backfire frame 102 and the specifications of the third composite panels.

[0090] Similarly, the fourth region 8 includes four fourth composite plates 9 with semi-circular openings. The circular hole formed by splicing two fourth composite plates 9 with matching openings is the cross-sectional shape of the converter transformer bushing. The gap between the fourth composite plate 9 and the converter transformer bushing is filled and sealed with fireproof material to improve the sealing performance of the sealing device.

[0091] In a preferred embodiment, such as Figure 5 As shown, the composite panel structure, from the outside to the inside, consists of: an explosion-proof panel 11, a calcium silicate fireproof panel 12, a ceramic fiber panel 13, a magnesium oxide panel 14, a ceramic fiber paper 15, and a stainless steel panel 16. The stainless steel panel 16 of the composite panel set on the fire-facing frame 101 is closer to the fire-repellent frame 102, and the stainless steel panel 16 of the composite panel set on the fire-repellent frame 102 is closer to the fire-facing frame 101.

[0092] Specifically, the explosion-proof board 11 has a thickness of 16mm, the calcium silicate fireproof board 12 has a thickness of 16mm, the ceramic fiber board 13 has a thickness of 10mm, the magnesium oxide board 14 has a thickness of 15mm, the ceramic fiber paper 15 has a thickness of 2mm, and the stainless steel board 16 has a thickness of 1mm.

[0093] Optional, such as Figure 6 As shown, the explosion-proof plate 11 includes a first stainless steel perforated plate 111, a second stainless steel perforated plate 112, and a concrete plate 112 located between the first stainless steel perforated plate 111 and the second stainless steel perforated plate 112. The thickness of the first stainless steel perforated plate 111 and the second stainless steel perforated plate 112 is 0.5 mm. The concrete plate 112 can be made of ultra-high performance concrete with a compressive strength of not less than 150 MPa, a flexural strength of not less than 20 MPa, and a heat resistance of not less than 1100℃, thereby improving the explosion-proof and fire-resistant performance of the integrated fireproof and explosion-proof sealing.

[0094] Optionally, the material between the first stainless steel perforated plate 111 and the second stainless steel perforated plate 112 can also be cement fiberboard.

[0095] In specific implementation, the calcium silicate fireproof board 12, the ceramic fiber board 13, and the magnesium oxide board 14 are bonded with high-temperature resistant adhesive, and the explosion-proof board 11, calcium silicate fireproof board 12, ceramic fiber board 13, magnesium oxide board 14, ceramic fiber paper 15, and stainless steel plate 16 are nailed together into an integrated composite board using air gun nails (200-300mm spacing, positive and negative nails). The overall thickness of the composite board is 200mm, the explosion-proof reflective overpressure peak value is above 800KPa, and it meets the fire resistance limit of more than 4 hours under the standard of HC (hydrocarbon) temperature rise curve.

[0096] In a preferred embodiment, the first region 2 / third region 6 of the fire-facing frame 101 / off-fire frame 102 includes four first main keels 17 serving as a first border, two second main keels 18 within the first border, and a plurality of secondary keels between the two second main keels 18.

[0097] The four first main keels 17, which form the first frame, are connected end to end to form a rectangular frame; the second main keel 18 is disposed inside the first frame, parallel to the first main keels 17 located at the top and bottom of the first frame, and connected to the first main keels 17 located at the left and right of the first frame; a plurality of secondary keels are disposed between the two second main keels 18, including a first keel 19 perpendicular to the second main keel 18, a second keel 20 parallel to the second main keel 18, and a third keel 21 connected to the first keel 19 and the second main keel 18;

[0098] The inscribed circular hole formed by the second main keel 18, the first keel 19 and the third keel 21 serves as the hole, and the hole corresponds to the bushing of the converter transformer.

[0099] The second region 4 / fourth region 6 of the fire-facing frame 101 / fire-repellent frame 102 includes four first main keels 17 serving as the second border, several second main keels 18 horizontally inside the second border, and several fourth secondary keels 22 vertically.

[0100] The four first main keels 17, which form the second frame, are connected end to end to form a rectangular frame. The second main keel 18 is located inside the second frame, parallel to the first main keels 17 located at the top and bottom of the second frame, and connected to the first main keels 17 located at the left and right of the second frame. The plurality of fourth secondary keels 22 are connected to the first main keels 17 located at the top and bottom of the second frame, and are perpendicular to the first main keels 17 located at the top and bottom of the second frame.

[0101] The first main keel 17 at the left and right positions of the first frame and the first main keel 17 at the left and right positions of the second frame are connected accordingly.

[0102] In specific implementation, the first main keel 17, which serves as the frame, and the two second main keels 18 can be connected using M16 non-magnetic stainless steel bolts with a strength grade of A2 group 80. The bolt consists of one ordinary nut, one tightening nut, and two flat washers (one on the bolt head side and one on the nut). The bolt length is laid out according to the length of 2 to 3 threads exposed above the nut, and the bolt spacing is 150mm. The main keel and the secondary keel can be connected by welding, with full welding on both sides. The welded ends are beveled around all sides, and the welding material used is A102 (E308-16). Alternatively, they can be connected by a detachable structure.

[0103] In a preferred embodiment, similar to the first region 2 and the second region 4,

[0104] The third region 6 includes four first main keels 17 forming a first border, two second main keels 18 within the first border, and several secondary keels between the two second main keels 18.

[0105] The four first main keels 17, which form the first frame, are connected end to end to form a rectangular frame; the second main keel 18 is disposed inside the first frame, parallel to the first main keels 17 located at the top and bottom of the first frame, and connected to the first main keels 17 located at the left and right of the first frame; a plurality of secondary keels are disposed between the two second main keels 18, including a first keel 19 perpendicular to the second main keel, a second keel 20 parallel to the second main keel 18, and a third keel 21 connected to the first keel 19 and the second main keel 18;

[0106] The inscribed circular holes formed by the second main keel 18, the first keel 19 and the third keel 21 correspond to the bushings of the converter transformer.

[0107] The fourth region includes four first main keels 17 forming a second border, several second main keels 18 horizontally inside the second border, and several fourth secondary keels 22 vertically.

[0108] The four first main keels 17, which form the second frame, are connected end to end to form a rectangular frame. The second main keel 18 is located inside the second frame, parallel to the first main keels 17 located at the top and bottom of the second frame, and connected to the first main keels 17 located at the left and right of the second frame. The plurality of fourth secondary keels 22 are connected to the first main keels 17 located at the top and bottom of the second frame, and are perpendicular to the first main keels 17 located at the top and bottom of the second frame.

[0109] The first main keel 17 at the left and right positions of the first frame and the first main keel 17 at the left and right positions of the second frame are connected accordingly.

[0110] Preferably, the fire-facing frame 101 and the fire-repellent frame 102 are connected and supported by several supporting keels 23, and fireproof material is filled between the two frames. The fireproof material can be fireproof cotton or other materials with good fireproof effect.

[0111] In this embodiment, the width of the first main keel 17 and the second main keel 18 located at the top and bottom positions of the first and second borders is 160mm, the width of the first main keel 17 located at the left and right positions of the first and second borders is 100mm, the width of the first keel, the second keel, the third keel and the fourth keel is 80mm, and the thickness of all main keels and all secondary keels is consistent, which is 60mm.

[0112] In one alternative implementation, such as Figure 7 As shown, stainless steel edging 24 is provided on the fire-facing frame 101 and the fire-repellent frame 102. The stainless steel edging 24 covers the first main keel 17 at the lower left and right positions of the first frame and the first main keel 17 at the upper left and right positions of the second frame, thereby improving the sealing performance and fireproof and explosion-proof strength of the entire sealing structure.

[0113] Further, such as Figure 8 As shown, stainless steel pressure strips 25 can also be set at the positions of the second main keel 18, the first keel 19 and the third keel 21 that form the inscribed circle, which improves the sealing performance and fire resistance and explosion resistance of the gap between the composite plate and the converter transformer bushing.

[0114] Example 3

[0115] This application proposes a reusable, detachable, fireproof, and explosion-proof sealing structure, comprising a composite panel and a keel frame 1, such as... Figure 1-4 As shown, the composite panel includes a first composite panel 3, a second composite panel 5, a third composite panel 7, a fourth composite panel 9, and a staggered composite panel 10. The keel frame 1 includes a fire-facing frame 101 and a fire-resistant frame 102. The fire-facing frame 101 and the fire-resistant frame 102 are connected in parallel relative to each other by a plurality of supporting keels 23. The gap between the fire-facing frame 101 and the fire-resistant frame 102 is filled with fireproof material.

[0116] In one optional embodiment, the fire-facing frame 101 is divided into a first region 2, a second region 4, and a staggered region, with the staggered region located between the first region 2 and the second region 4. A first composite panel 3 is disposed in the first region 2 and detachably connected to the fire-facing frame 101. A second composite panel 5 is disposed in the second region 4 and detachably connected to the fire-facing frame 101. The staggered composite panel 10 is disposed in the staggered region. The unfired frame 102 is divided into a third region 6 and a fourth region 8, with a third composite panel 7 disposed in the third region 6 and detachably connected to the unfired frame 102. A fourth composite panel 9 is disposed in the fourth region 8 and detachably connected to the fire-facing frame 101.

[0117] In another optional embodiment, the fire-facing frame 101 can be divided into a first region 2 and a second region 4 by region. The first composite plate 3 is disposed in the first region 2 and is detachably connected to the fire-facing frame 101. The second composite plate 5 is disposed in the second region 4 and is detachably connected to the fire-facing frame 101. The unfire-facing frame 102 is divided into a third region 6, a fourth region 8, and a staggered region by region. The staggered region is located between the third region 6 and the fourth region 8. The third composite plate 7 is disposed in the third region 6 and is detachably connected to the unfire-facing frame 102. The fourth composite plate 9 is disposed in the fourth region 8 and is detachably connected to the fire-facing frame 101. The staggered composite plate 10 is disposed in the staggered region.

[0118] For example, in this embodiment, the two staggered composite panels 10 are arranged between the third region 6 and the fourth region 8. The position of the staggered composite panel 10 corresponds to the connection seam position of the first region 2 and the second region 4 on the fire-facing frame. The staggered composite panels 10 are staggered on the fire-facing frame or the unfire-facing frame to prevent flames from passing through the gaps.

[0119] In this embodiment, the first region 2 includes four first composite panels 3 of the same size and rectangular shape. To facilitate splicing, a certain distance is reserved at the splicing point of the first composite panels 3. The sum of the areas of the four first composite panels 3 is slightly smaller than the area of ​​the fire-facing frame 101. In specific implementation, multiple first composite panels 3 can be set according to the area of ​​the fire-facing frame 101 and the specifications of the first composite panels 3, such as 1×2, 2×3, 3×3, etc.

[0120] The second region 4 includes four second composite plates 5 with semi-circular openings. The circular hole formed by splicing two second composite plates 5 with matching openings is the cross-sectional shape of the converter transformer bushing. The gap between the second composite plate 5 and the converter transformer bushing is filled and sealed with 3M1000NS fireproof sealant to improve the sealing performance of the sealing device.

[0121] Similarly, the third region 6 includes four rectangular third composite panels 7 of the same size. The sum of the areas of the four third composite panels 7 is slightly smaller than the area of ​​the backfire frame 102. In specific implementation, different numbers of third composite panels 7 can be set according to the area of ​​the backfire frame 102 and the specifications of the third composite panels.

[0122] Similarly, the fourth region 8 includes four fourth composite plates 9 with semi-circular openings. The circular hole formed by splicing two fourth composite plates 9 with matching openings is the cross-sectional shape of the converter transformer bushing. The gap between the fourth composite plate 9 and the converter transformer bushing is filled and sealed with fireproof material to improve the sealing performance of the sealing device.

[0123] In a preferred embodiment, such as Figure 5 As shown, the composite panel structure, from the outside to the inside, consists of: an explosion-proof panel 11, a calcium silicate fireproof panel 12, a ceramic fiber panel 13, a magnesium oxide panel 14, a ceramic fiber paper 15, and a stainless steel panel 16. The stainless steel panel 16 of the composite panel set on the fire-facing frame 101 is closer to the fire-repellent frame 102, and the stainless steel panel 16 of the composite panel set on the fire-repellent frame 102 is closer to the fire-facing frame 101.

[0124] Specifically, the explosion-proof board 11 has a thickness of 12mm, the calcium silicate fireproof board 12 has a thickness of 12mm, the ceramic fiber board 13 has a thickness of 7mm, the magnesium oxide board 14 has a thickness of 11.5mm, the ceramic fiber paper 15 has a thickness of 2mm, and the stainless steel board 16 has a thickness of 0.6mm.

[0125] Optional, such as Figure 6 As shown, the explosion-proof plate 11 includes a first stainless steel perforated plate 111, a second stainless steel perforated plate 112, and a concrete plate 112 located between the first stainless steel perforated plate 111 and the second stainless steel perforated plate 112. The thickness of the first stainless steel perforated plate 111 and the second stainless steel perforated plate 112 is 0.3 mm. The concrete plate 112 can be made of ultra-high performance concrete with a compressive strength of not less than 150 MPa, a flexural strength of not less than 20 MPa, and a heat resistance of not less than 1100℃, thereby improving the explosion-proof and fire-resistant performance of the integrated fireproof and explosion-proof sealing.

[0126] Optionally, the material between the first stainless steel perforated plate 111 and the second stainless steel perforated plate 112 can also be cement fiberboard.

[0127] In specific implementation, the calcium silicate fireproof board 12, the ceramic fiber board 13, and the magnesium oxide board 14 are bonded with high-temperature resistant adhesive, and the explosion-proof board 11, calcium silicate fireproof board 12, ceramic fiber board 13, magnesium oxide board 14, ceramic fiber paper 15, and stainless steel plate 16 are nailed together into an integrated composite board using air gun nails (200-300mm spacing, positive and negative nails). The overall thickness of the composite board is 150mm, the explosion-proof reflective overpressure peak value is above 800KPa, and it meets the fire resistance limit of more than 4 hours under the standard of HC (hydrocarbon) temperature rise curve.

[0128] In a preferred embodiment, the first region 2 / third region 6 of the fire-facing frame 101 / off-fire frame 102 includes four first main keels 17 serving as a first border, two second main keels 18 within the first border, and a plurality of secondary keels between the two second main keels 18.

[0129] The four first main keels 17, which form the first frame, are connected end to end to form a rectangular frame; the second main keel 18 is disposed inside the first frame, parallel to the first main keels 17 located at the top and bottom of the first frame, and connected to the first main keels 17 located at the left and right of the first frame; a plurality of secondary keels are disposed between the two second main keels 18, including a first keel 19 perpendicular to the second main keel 18, a second keel 20 parallel to the second main keel 18, and a third keel 21 connected to the first keel 19 and the second main keel 18;

[0130] The inscribed circular holes formed by the second main keel 18, the first keel 19 and the third keel 21 correspond to the bushings of the converter transformer.

[0131] The second region 4 / fourth region 6 of the fire-facing frame 101 / fire-repellent frame 102 includes four first main keels 17 serving as the second border, several second main keels 18 horizontally inside the second border, and several fourth secondary keels 22 vertically.

[0132] The four first main keels 17, which form the second frame, are connected end to end to form a rectangular frame. The second main keel 18 is located inside the second frame, parallel to the first main keels 17 located at the top and bottom of the second frame, and connected to the first main keels 17 located at the left and right of the second frame. The plurality of fourth secondary keels 22 are connected to the first main keels 17 located at the top and bottom of the second frame, and are perpendicular to the first main keels 17 located at the top and bottom of the second frame.

[0133] The first main keel 17 at the left and right positions of the first frame and the first main keel 17 at the left and right positions of the second frame are connected accordingly.

[0134] In specific implementation, the first main keel 17, which serves as the frame, and the two second main keels 18 can be connected using M16 non-magnetic stainless steel bolts with a strength grade of A2 group 80. The bolt consists of one ordinary nut, one tightening nut, and two flat washers (one on the bolt head side and one on the nut). The bolt length is laid out according to the length of 2 to 3 threads exposed above the nut, and the bolt spacing is 150mm. The main keel and the secondary keel can be connected by welding, with full welding on both sides. The welded ends are beveled around all sides, and the welding material used is A102 (E308-16). Alternatively, they can be connected by a detachable structure.

[0135] In a preferred embodiment, similar to the first region 2 and the second region 4,

[0136] The third region 6 includes four first main keels 17 forming a first border, two second main keels 18 within the first border, and several secondary keels between the two second main keels 18.

[0137] The four first main keels 17, which form the first frame, are connected end to end to form a rectangular frame; the second main keel 18 is disposed inside the first frame, parallel to the first main keels 17 located at the top and bottom of the first frame, and connected to the first main keels 17 located at the left and right of the first frame; a plurality of secondary keels are disposed between the two second main keels 18, including a first keel 19 perpendicular to the second main keel, a second keel 20 parallel to the second main keel 18, and a third keel 21 connected to the first keel 19 and the second main keel 18;

[0138] The inscribed circular holes formed by the second main keel 18, the first keel 19 and the third keel 21 correspond to the bushings of the converter transformer.

[0139] The fourth region includes four first main keels 17 forming a second border, several second main keels 18 horizontally inside the second border, and several fourth secondary keels 22 vertically.

[0140] The four first main keels 17, which form the second frame, are connected end to end to form a rectangular frame. The second main keel 18 is located inside the second frame, parallel to the first main keels 17 located at the top and bottom of the second frame, and connected to the first main keels 17 located at the left and right of the second frame. The plurality of fourth secondary keels 22 are connected to the first main keels 17 located at the top and bottom of the second frame, and are perpendicular to the first main keels 17 located at the top and bottom of the second frame.

[0141] The first main keel 17 at the left and right positions of the first frame and the first main keel 17 at the left and right positions of the second frame are connected accordingly.

[0142] Preferably, the fire-facing frame 101 and the fire-repellent frame 102 are connected and supported by several supporting keels 23, and fireproof material is filled between the two frames. The fireproof material can be fireproof cotton or other materials with good fireproof effect.

[0143] In this embodiment, the width of the first main keel 17 and the second main keel 18 located at the top and bottom positions of the first and second borders is 160mm, the width of the first main keel 17 located at the left and right positions of the first and second borders is 100mm, the width of the first keel, the second keel, the third keel and the fourth keel is 80mm, and the thickness of all main keels and all secondary keels is consistent, which is 60mm.

[0144] In one alternative implementation, such as Figure 7 As shown, stainless steel edging 24 is provided on both the fire-facing frame 101 and the fire-repellent frame 102. The stainless steel edging 24 covers the first main keel 17 at the lower left and right positions of the first frame and the first main keel 17 at the upper left and right positions of the second frame, thereby improving the sealing performance and fireproof and explosion-proof strength of the entire sealing structure.

[0145] Further, such as Figure 8 As shown, stainless steel pressure strips 25 can also be set at the positions of the second main keel 18, the first keel 19 and the third keel 21 that form the inscribed circle, which improves the sealing performance and fire resistance and explosion resistance of the gap between the composite plate and the converter transformer bushing.

[0146] It should be noted that, for those skilled in the art, it is obvious that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​the present invention; at the same time, for those skilled in the art, there will be changes in specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A reusable, detachable, fireproof, and explosion-proof sealing structure, characterized in that, It includes a composite panel and a keel frame, wherein the composite panel and the keel frame are detachably connected. The composite panel includes a first composite panel, a second composite panel, a third composite panel, a fourth composite panel, and a staggered composite panel. The keel frame includes a fire-facing frame and a back-fire frame. The fire-facing frame and the back-fire frame are connected in parallel by several supporting keels. The gap between the fire-facing frame and the back-fire frame is filled with fireproof material. The fire-facing frame is divided into a first region, a second region, and a staggered region, with the staggered region located between the first region and the second region. The first composite panel is disposed in the first region, the second composite panel is disposed in the second region, and the staggered composite panel is disposed in the staggered region. The unfired frame is divided into a third region and a fourth region, with the third composite panel disposed in the third region and the fourth composite panel disposed in the fourth region. Alternatively, the fire-facing frame can be divided into a first region and a second region, with the first composite panel disposed in the first region and the second composite panel disposed in the second region; or the unfire-facing frame can be divided into a third region, a fourth region, and a staggered region, with the staggered region located between the third region and the fourth region, the third composite panel disposed in the third region, the fourth composite panel disposed in the fourth region, and the staggered composite panel disposed in the staggered region. After the first composite plate / third composite plate is disposed in the first region / third region, it forms holes corresponding to the bushings of the converter transformer, and the holes are positioned correspondingly in the first region and the third region.

2. The reusable fireproof and explosion-proof sealing structure according to claim 1, characterized in that, The composite panel includes an explosion-proof panel, a calcium silicate fireproof panel, a ceramic fiber panel, a magnesium oxide panel, a ceramic fiber paper, and a stainless steel panel stacked in sequence. The stainless steel panel of the composite panel set on the fire-facing frame is closer to the unfire-facing frame, and the stainless steel panel of the composite panel set on the unfire-facing frame is closer to the fire-facing frame.

3. The reusable fireproof and explosion-proof sealing structure according to claim 2, characterized in that, The calcium silicate fireproof board and the ceramic fiber board are bonded together with adhesive, the ceramic fiber board and the magnesium oxide board are bonded together with adhesive, and the explosion-proof board, calcium silicate fireproof board, ceramic fiber board, magnesium oxide board, ceramic fiber paper and stainless steel board are nailed together to form an integrated composite board.

4. The reusable fireproof and explosion-proof sealing structure according to claim 2, characterized in that, The explosion-proof plate includes a first stainless steel plate, a second stainless steel plate, and a concrete plate located between the first stainless steel plate and the second stainless steel plate.

5. The reusable fireproof and explosion-proof sealing structure according to claim 4, characterized in that, The concrete slab is an ultra-high performance concrete slab with a compressive strength of not less than 150 MPa, a flexural strength of not less than 20 MPa, and a heat resistance of not less than 1100℃.

6. The reusable fireproof and explosion-proof sealing structure according to claim 5, characterized in that, The first / third region of the fire-facing frame / backfire-facing frame includes four first main keels forming a first border, two second main keels within the first border, and several secondary keels between the two second main keels. The four first main keels that form the first frame are connected end to end to form a rectangular frame; the second main keel is set inside the first frame, parallel to the first main keel located above and below the first frame, and connected to the first main keel located to the left and right of the first frame; a plurality of secondary keels are set between the two second main keels, the plurality of secondary keels including a first keel perpendicular to the second main keel, a second keel parallel to the second main keel, and a third keel connected to the first keel and the second main keel; The inscribed circular hole formed by the second main keel, the first keel and the third keel serves as the hole; The second / fourth region of the fire-facing frame / backfire-facing frame includes four first main keels serving as the second border, several second main keels horizontally inside the second border, and several fourth secondary keels vertically. The four first main keels that form the second frame are connected end to end to form a rectangular frame. The second main keel is located inside the second frame, parallel to the first main keel located above and below the second frame, and connected to the first main keel located to the left and right of the second frame. The plurality of fourth secondary keels are connected to the first main keel located above and below the second frame, and perpendicular to the first main keel located above and below the second frame. The first main keel at the left and right positions of the first frame and the first main keel at the left and right positions of the second frame are connected accordingly; The main keel is connected to the main keel, the main keel to the secondary keel, and the secondary keel to the secondary keel through a detachable structure.

7. The reusable fireproof and explosion-proof sealing structure according to claim 6, characterized in that, The thickness of the explosion-proof plate is 8~16mm; And / or, the thickness of the calcium silicate fireproof board is 8~16mm; And / or, the thickness of the ceramic fiberboard is 4~10mm; And / or, the thickness of the magnesium oxide board is 8~15mm; And / or, the ceramic fiber paper has a thickness of 2 mm; And / or, the thickness of the stainless steel plate is 0.2~1mm.

8. The reusable fireproof and explosion-proof sealing structure according to claim 7, characterized in that, The width of the main keel in the horizontal direction is 160mm and the thickness is 40~80mm. And / or, the width of the main keel in the longitudinal direction is 100mm and the thickness is 40~80mm. And / or, the width of the secondary keel is 80mm and the thickness is 40~80mm. The thickness of the main keel and the secondary keel should be consistent.

9. A reusable fireproof and explosion-proof sealing structure according to claim 8, characterized in that, Stainless steel edging is provided on the fire-facing frame and the fire-repellent frame, and the stainless steel edging covers the first main keel at the lower left and right positions of the first frame and the first main keel at the upper left and right positions of the second frame. And / or, stainless steel pressure strips are provided at the positions of the second main keel, the first keel and the third keel that form the inscribed circle.

Images