Light and thin integrated fireproof and explosion-proof clamping plate for converter transformer valve side sleeve and fireproof and explosion-proof plugging structure of light and thin integrated fireproof and explosion-proof clamping plate

Abstract

The utility model provides an integrated fireproof and anti-explosion clamping plate for a converter transformer valve side sleeve hole and a fireproof and anti-explosion plugging structure of the integrated fireproof and anti-explosion clamping plate. The number of the light and thin integrated fireproof and anti-explosion clamping plates is two, the light and thin integrated fireproof and anti-explosion clamping plates are detachably arranged on the two side faces of the metal supporting frame body respectively, through holes are formed in the two light and thin integrated fireproof and anti-explosion clamping plates and the metal supporting frame body in a penetrating mode, and a sleeve on the valve side of the converter transformer is arranged in the through holes in a penetrating mode. Each light and thin integrated fireproof and anti-explosion clamping plate comprises a stainless steel composite fireproof and anti-explosion plate, a fireproof and heat-insulating fiber plate and a high-temperature-resistant inorganic fireproof plate, the fireproof and heat-insulating fiber plate is clamped between the stainless steel composite fireproof and anti-explosion plate and the high-temperature-resistant inorganic fireproof plate, and the total thickness of the two light and thin integrated fireproof and anti-explosion clamping plates and the metal supporting frame body ranges from 120 mm to 150 mm. According to the light and thin integrated fireproof anti-explosion clamping plate, the problem that the space utilization rate of a valve hall is low due to the fact that the clamping plate is exposed out of a wall is effectively solved, the structure is simple, transportation and field installation are convenient, and the field construction difficulty is reduced.

Description

Technical Field

[0001] This disclosure relates to the field of converter transformer valve side bushing technology, and in particular to a lightweight, thin, integrated fireproof and explosion-proof clamp for converter transformer valve side bushings and its fireproof and explosion-proof sealing structure. Background Technology

[0002] In daily life, converter transformers are a major source of fire hazard in valve halls. Therefore, fireproof and explosion-proof structures are usually installed in the gap between the converter transformer bushings and the valve hall walls to prevent the converter transformer from affecting the valve hall due to deflagration.

[0003] In the early fireproof and explosion-proof structures of some converter transformer bushings, independent fireproof units and independent explosion-proof units were typically used, such as... Figure 1 As shown, the large gap between the fireproof unit and the explosion-proof unit not only results in a thicker overall fireproof and explosion-proof structure for the converter transformer bushing, making it unable to adapt well to the installation of the thinner valve hall wall, leading to exposure and reduced space utilization in the valve hall; but also increases the probability of the fireproof unit being damaged, causing it to lose its fireproof performance.

[0004] To address the aforementioned issues, a new type of fireproof and explosion-proof structure for converter transformer bushings has emerged on the market. For example, the integrated explosion-proof and fireproof sealing system for converter transformer bushings disclosed in Chinese Patent Document No. CN118482242A. Although the aforementioned sealing system achieves the integrated setting of the explosion-proof unit layer and the fireproof unit, the overall thickness of the sealing system is usually greater than 150mm, which makes it difficult to adapt to the application of walls with a thickness of 150mm. In other words, the sealing system is still exposed to the wall, resulting in a lower space utilization rate in the valve hall. Utility Model Content

[0005] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a lightweight integrated fireproof and explosion-proof clamp and its fireproof and explosion-proof sealing structure for converter transformer valve side bushings that can be well adapted to the application of 150mm thick walls and ensure that the installed thin integrated fireproof and explosion-proof clamp will not be exposed on the wall, thereby ensuring the maximum space utilization of the valve hall. The structure is relatively simple, easy to transport and install on site, and reduces the difficulty of on-site construction.

[0006] The purpose of this disclosure is achieved through the following technical solution:

[0007] A lightweight, integrated fireproof and explosion-proof clamp for the valve-side bushing of a converter transformer is disclosed. Two lightweight, integrated fireproof and explosion-proof clamps are provided, detachably mounted on both sides of a metal support frame. Both lightweight, integrated fireproof and explosion-proof clamps and the metal support frame are interconnected by through holes, through which the valve-side bushing of the converter transformer passes.

[0008] The lightweight integrated fireproof and explosion-proof plywood includes a stainless steel composite fireproof and explosion-proof board, a fireproof and heat-insulating fiberboard, and a high-temperature resistant inorganic fireproof board. The fireproof and heat-insulating fiberboard is sandwiched between the stainless steel composite fireproof and explosion-proof board and the high-temperature resistant inorganic fireproof board. The total thickness of the two lightweight integrated fireproof and explosion-proof plywoods and the metal support frame is 120mm to 150mm.

[0009] In one embodiment, the total thickness of the two thin, integrated fireproof and explosion-proof clamps and the metal support frame is 150 mm.

[0010] In one embodiment, the thickness of the thin and light integrated fireproof and explosion-proof plywood is 30mm to 50mm; and / or, the thickness of the metal support frame is 50mm to 80mm.

[0011] In one embodiment, the stainless steel composite fireproof and explosion-proof plate has a thickness of 8mm to 10mm; and / or,

[0012] The fireproof and heat-insulating fiberboard has a thickness of 20mm to 30mm; and / or,

[0013] The high-temperature resistant inorganic fireproof board is 8mm to 10mm thick; and / or

[0014] The metal support frame is a non-magnetic 304 stainless steel support frame; and / or...

[0015] The metal support frame is equipped with a heat-insulating fiber cotton layer.

[0016] In one embodiment, the stainless steel composite fireproof and explosion-proof board includes any one of stainless steel composite magnesium sulfate fireproof board, stainless steel composite fiber cement fireproof and explosion-proof board, and stainless steel composite silicate fireproof board; the fireproof and heat-insulating fiber board includes any one of aluminum silicate fiber board and ceramic fiber board; and the high-temperature resistant inorganic fireproof board includes any one of low-density gray silica base board, magnesium sulfate fireproof board, and glass magnesium fireproof board.

[0017] In one embodiment, the stainless steel composite fireproof and explosion-proof board is a stainless steel composite magnesium sulfate fireproof board, which includes stainless steel plates and magnesium sulfate fireproof boards stacked in sequence, and the high-temperature resistant inorganic fireproof board is connected to the magnesium sulfate fireproof board through the fireproof and heat-insulating fiber board.

[0018] In one embodiment, the stainless steel plate is connected to the magnesium sulfate fireproof board via a first adhesive layer; and / or,

[0019] The fireproof and heat-insulating fiberboard is connected to the magnesium sulfate fireproof board via a second adhesive layer; and / or

[0020] The high-temperature resistant inorganic fireproof board is connected to the fireproof and heat-insulating fiberboard through a third adhesive layer.

[0021] In one embodiment, the stainless steel composite fireproof and explosion-proof board is a stainless steel composite fiber cement board, and the lightweight integrated fireproof and explosion-proof splice also includes a locking component, which is used to lock and fix the stainless steel composite fiber cement board, the fireproof and heat-insulating fiber board and the high-temperature resistant inorganic fireproof board that are stacked in sequence.

[0022] In one embodiment, the stainless steel composite fiber cement includes a stainless steel perforated plate and a fiber cement plate stacked sequentially. The side of the stainless steel perforated plate facing the fiber cement plate has a plurality of flanged positioning holes, and the fiber cement plate has an embedded post facing the stainless steel perforated plate. Each embedded post is interference-fitted into one of the flanged positioning holes.

[0023] A fireproof and explosion-proof sealing structure for the valve-side bushing of a converter transformer includes the lightweight, integrated fireproof and explosion-proof clamp described in any of the above embodiments.

[0024] Compared with the prior art, this disclosure has at least the following advantages:

[0025] Because the fireproof and heat-insulating fiberboard is sandwiched between the stainless steel composite fireproof and explosion-proof board and the high-temperature resistant inorganic fireproof board, and because the two lightweight integrated fireproof and explosion-proof panels are detachably mounted on both sides of the metal support frame, and the total thickness of the two lightweight integrated fireproof and explosion-proof panels and the metal support frame is 120mm to 150mm, the thickness and weight of the lightweight integrated fireproof and explosion-proof panels are effectively reduced, ensuring the thickness of the fireproof and explosion-proof sealing structure formed by the connection of the two lightweight integrated fireproof and explosion-proof panels and the metal support frame. The thickness is no more than 150mm, ensuring that the installed thin, integrated fireproof and explosion-proof plywood will not be exposed on the wall, thus maximizing the space utilization of the valve hall. This effectively avoids the problem of reduced space utilization caused by exposed thin, integrated fireproof and explosion-proof plywood on the wall, ensuring that the fire resistance of the prepared fireproof and explosion-proof sealing structure reaches 3h to 6h and the explosion resistance reaches 0.1MPa to 0.5MPa, which can well meet the fireproof and explosion-proof performance requirements of the valve side of the converter transformer, and is especially suitable for applications with walls 150mm thick. In addition, because the thin, integrated fireproof and explosion-proof plywood is lighter and has a simpler structure, it is not only easy to transport but also easy to install on site, effectively reducing the difficulty of on-site construction. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of a traditional fireproof and explosion-proof sealing structure;

[0028] Figure 2 This is a schematic diagram of a fireproof and explosion-proof sealing structure according to an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the structure of a lightweight, integrated fireproof and explosion-proof plywood according to an embodiment of the present invention, taken in one direction.

[0030] Figure 4 This is a schematic diagram of the structure of a lightweight, integrated fireproof and explosion-proof plywood in one direction according to another embodiment of the present invention;

[0031] Reference numerals: 10, Fireproof and explosion-proof sealing structure; 100, Metal support frame; 200, Lightweight integrated fireproof and explosion-proof plywood; 210, Stainless steel composite fireproof and explosion-proof board; 211a, Stainless steel plate; 212a, Magnesium sulfate fireproof board; 212b, Stainless steel perforated plate; 222b, Fiber cement board; 2121, Flanged positioning hole; 2221, Embedded column; 220, Fireproof and heat-insulating fiber board; 230, High-temperature resistant inorganic fireproof board; 240, Locking parts; 300, Thermal insulation fiber cotton layer. Detailed Implementation

[0032] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0033] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0034] Unless otherwise defined, 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 disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments:

[0036] Please see Figures 2 to 3One embodiment of a lightweight, integrated fireproof and explosion-proof clamping plate 200 for a converter transformer valve-side bushing includes two such plates. These two plates are detachably mounted on both sides of a metal support frame 100, allowing for easy installation. Both plates and the metal support frame 100 are perforated with through holes, enabling... The bushing on the valve side of the converter transformer passes through the through hole. The lightweight integrated fireproof and explosion-proof clamping plate 200 includes a stainless steel composite fireproof and explosion-proof plate 210, a fireproof and heat-insulating fiberboard 220, and a high-temperature resistant inorganic fireproof plate 230. The fireproof and heat-insulating fiberboard 220 is sandwiched between the stainless steel composite fireproof and explosion-proof plate 210 and the high-temperature resistant inorganic fireproof plate 230. The total thickness of the two lightweight integrated fireproof and explosion-proof clamping plates 200 and the metal support frame 100 is 120mm to 150mm.

[0037] It is understandable that, since the fireproof and heat-insulating fiberboard 220 is sandwiched between the stainless steel composite fireproof and explosion-proof board 210 and the high-temperature resistant inorganic fireproof board 230, and since the two lightweight integrated fireproof and explosion-proof clamps 200 are detachably mounted on both sides of the metal support frame 100, and the total thickness of the two lightweight integrated fireproof and explosion-proof clamps 200 and the metal support frame 100 is 120mm to 150mm, the thickness and weight of the lightweight integrated fireproof and explosion-proof clamps 200 are effectively reduced, ensuring the connection between the two lightweight integrated fireproof and explosion-proof clamps 200 and the metal support frame 100. The resulting fireproof and explosion-proof sealing structure 10 has a thickness of no more than 150mm, ensuring that the installed lightweight integrated fireproof and explosion-proof panel 200 will not be exposed to the wall, thus maximizing the space utilization of the valve hall. This effectively avoids the problem of reduced space utilization caused by the lightweight integrated fireproof and explosion-proof panel 200 being exposed to the wall, ensuring that the prepared fireproof and explosion-proof sealing structure 10 has a fire resistance of 3h to 6h and an explosion resistance of 0.1MPa to 0.5MPa, which can well meet the fireproof and explosion-proof performance requirements of the converter transformer valve side, and is especially suitable for applications with walls 150mm thick. In addition, because the lightweight integrated fireproof and explosion-proof panel 200 is lighter and has a simpler structure, it is not only easy to transport but also easy to install on site, effectively reducing the difficulty of on-site construction.

[0038] It is also understandable that, since the lightweight integrated fireproof and explosion-proof splice 200 and the metal support frame 100 are detachable, they are easy for operators to disassemble and maintain, thereby saving maintenance costs and increasing the reusability of the lightweight integrated fireproof and explosion-proof splice 200 and the metal support frame 100.

[0039] In a preferred embodiment, the total thickness of the two thin, integrated fireproof and explosion-proof clamping plates 200 and the metal support frame 100 is 150mm. This ensures that the fireproof and explosion-proof sealing structure 10 of the converter transformer valve side bushing remains flush with the 150mm thick wall after installation. This improves the fireproof and explosion-proof performance and structural stability of the fireproof and explosion-proof sealing structure 10 of the converter transformer valve side bushing, and maximizes the space utilization of the valve hall. In another preferred embodiment, the thickness of the thin, integrated fireproof and explosion-proof clamping plate 200 is 34mm.

[0040] Specifically, in one embodiment, the thickness of the thin and light integrated fireproof and explosion-proof clamp 200 is 30mm to 50mm; in particular, the thickness of the metal support frame 100 is 50mm to 80mm, so as to ensure that the thickness of the prepared fireproof and explosion-proof sealing structure 10 is 120mm to 150mm.

[0041] Furthermore, in one embodiment, the stainless steel composite fireproof and explosion-proof plate 210 has a thickness of 8mm to 10mm; in particular, the fireproof and heat-insulating fiber plate 220 has a thickness of 20mm to 30mm; and the high-temperature resistant inorganic fireproof plate 230 has a thickness of 8mm to 10mm, so as to ensure that the thickness of the fireproof and explosion-proof sealing structure 10 is 120mm to 150mm.

[0042] In one embodiment, the metal support frame 100 is a non-magnetic 304 stainless steel support frame; since the non-magnetic 304 stainless steel support frame has high strength and toughness, it can withstand greater impact and explosive force, thereby improving the safety of the fireproof and explosion-proof sealing structure 10 in extreme situations such as explosions.

[0043] In one embodiment, a thermal insulation fiber cotton layer 300 is provided inside the metal support frame 100. This makes full use of the space of the metal support frame 100, which helps to reduce the thickness of the fireproof and explosion-proof sealing structure 10, so as to better adapt to the application of thin walls. The added thermal insulation fiber cotton layer 300 can provide better structural support and buffer for the lightweight integrated fireproof and explosion-proof panels 200 on both sides, effectively avoiding the problem that the fireproof and explosion-proof core panels on both sides are prone to falling off or breaking due to excessive vibration.

[0044] like Figure 3As shown, in one embodiment, the stainless steel composite fireproof and explosion-proof board 210 includes any one of stainless steel composite magnesium sulfate fireproof board 212a, stainless steel composite fiber cement fireproof and explosion-proof board, and stainless steel composite silicate fireproof board; the fireproof and heat-insulating fiber board 220 includes any one of aluminum silicate fiber board and ceramic fiber board; the high-temperature resistant inorganic fireproof board 230 includes any one of low-density gray silica base board, magnesium sulfate fireproof board 212a, and glass magnesium fireproof board, to ensure that a fireproof and explosion-proof sealing structure 10 with a fire resistance of 3h to 6h and an explosion resistance of 0.1MPa to 0.5MPa is prepared.

[0045] like Figure 4 As shown, in some embodiments, the stainless steel composite fireproof and explosion-proof plate 210 is a stainless steel composite magnesium sulfate fireproof plate 212a. The stainless steel composite magnesium sulfate fireproof plate 212a includes a stainless steel plate 211a and a magnesium sulfate fireproof plate 212a stacked sequentially. The high-temperature resistant inorganic fireproof plate 230 is connected to the magnesium sulfate fireproof plate 212a through the fireproof and heat-insulating fiber plate 220 to achieve a layered composite arrangement of the stainless steel composite magnesium sulfate fireproof plate 212a, the fireproof and heat-insulating fiber plate 220, and the magnesium sulfate fireproof plate 212a. In a preferred embodiment, the stainless steel composite magnesium sulfate fireproof plate 212a is 8mm thick, the fireproof and heat-insulating fiber plate 220 is 16mm thick, and the high-temperature resistant inorganic fireproof plate 230 is 8mm thick to ensure that the thickness of the finally prepared fireproof and explosion-proof sealing structure 10 is 150mm.

[0046] Furthermore, in one embodiment, the stainless steel plate 211a is connected to the magnesium sulfate fireproof board 212a through a first adhesive layer; the fireproof and heat-insulating fiberboard 220 is connected to the magnesium sulfate fireproof board 212a through a second adhesive layer; and the high-temperature resistant inorganic fireproof board 230 is connected to the fireproof and heat-insulating fiberboard 220 through a third adhesive layer, thereby achieving the bonding arrangement between the stainless steel plate 211a, the magnesium sulfate fireproof board 212a, the fireproof and heat-insulating fiberboard 220, and the high-temperature resistant inorganic fireproof board 230.

[0047] In one embodiment, the first, second, and third adhesive layers are all bonded together using powdered adhesive under heated and pressurized conditions to bond the stainless steel plate 211a, magnesium sulfate fireproof board 212a, fireproof and heat-insulating fiberboard 220, and high-temperature resistant inorganic fireproof board 230. It is understood that since powdered adhesive is typically in powder form, compared to liquid adhesive, using powdered adhesive can significantly reduce problems such as uneven coating and thinness in the bonding process, thereby improving the production efficiency of the lightweight integrated fireproof and explosion-proof plywood 200. It is worth noting that the thickness of the first, second, and third adhesive layers is relatively thin, and their impact on the overall thickness of the fireproof and explosion-proof sealing structure 10 is minimal.

[0048] In some other embodiments, the stainless steel composite fireproof and explosion-proof board 210 is a stainless steel composite fiber cement board 222b, and the lightweight integrated fireproof and explosion-proof clamp 200 further includes a locking member 240. The locking member 240 is used to lock and fix the stainless steel composite fiber cement board 222b, the fireproof and heat-insulating fiber board 220 and the high-temperature resistant inorganic fireproof board 230 stacked in sequence, so as to achieve a fixed connection between the stainless steel composite fiber cement board 222b, the fireproof and heat-insulating fiber board 220 and the high-temperature resistant inorganic fireproof board 230.

[0049] like Figure 4 As shown, in one embodiment, the stainless steel composite fiber cement includes a stainless steel perforated plate 212b and a fiber cement board 222b stacked sequentially. The side of the stainless steel perforated plate 212b facing the fiber cement board 222b has a plurality of flanged positioning holes 2121, and the fiber cement board 222b has an embedded post 2221 facing the stainless steel perforated plate 212b. Each embedded post 2221 is interference-fitted into a flanged positioning hole 2121 to achieve the stability of the connection between the stainless steel perforated plate 212b and the fiber cement board 222b.

[0050] like Figure 3 As shown, in one embodiment, the flange positioning holes 2121 are arranged in a matrix to further improve the stability of the connection between the fiber cement board 222b and the two stainless steel perforated plates 212b.

[0051] It is understandable that, since the fiber cement board 222b is relatively thin with a thickness of 20mm to 30mm, if the diameter of the flange positioning hole 2121 or the flange length of the flange positioning hole 2121 is too large, the fiber cement board 222b is prone to breakage during pressing and molding. If the diameter of the flange positioning hole 2121 or the flange length of the flange positioning hole 2121 is too small, a stable connection between the stainless steel perforated plate 212b and the fiber cement board 222b cannot be achieved. Therefore, in one embodiment, the diameter of the flange positioning hole 2121 is 5.0 mm to 10 mm; in particular, the flange length of the flange positioning hole 2121 is 0.1 mm to 2.0 mm to ensure that the diameter of the flange positioning hole 2121 is appropriately distributed in the thinner fiber cement board 222b. In this way, while ensuring a reliable connection strength between the fiber cement board 222b and the stainless steel perforated plate 212b, the problem of fiber cement board 222b breaking during the pressing and molding process is also avoided.

[0052] like Figure 2As shown, this disclosure also provides a fireproof and explosion-proof sealing structure 10 for a converter transformer valve-side bushing, including the lightweight integrated fireproof and explosion-proof clamp 200 described in any of the above embodiments. The fireproof and explosion-proof sealing structure 10 includes two lightweight integrated fireproof and explosion-proof clamps 200 and a metal support frame 100. Both lightweight integrated fireproof and explosion-proof clamps 200 and the metal support frame 100 are formed with through holes. The converter transformer valve-side bushing passes through the through holes, and the two lightweight integrated fireproof and explosion-proof clamps 200 are respectively located on both sides of the metal support frame 100.

[0053] Compared with the prior art, this disclosure has at least the following advantages:

[0054] Because the fireproof and heat-insulating fiberboard 220 is sandwiched between the stainless steel composite fireproof and explosion-proof board 210 and the high-temperature resistant inorganic fireproof board 230, and because the two lightweight integrated fireproof and explosion-proof clamps 200 are detachably mounted on both sides of the metal support frame 100, and the total thickness of the two lightweight integrated fireproof and explosion-proof clamps 200 and the metal support frame 100 is 120mm to 150mm, the thickness and weight of the lightweight integrated fireproof and explosion-proof clamps 200 are effectively reduced, ensuring that the connection between the two lightweight integrated fireproof and explosion-proof clamps 200 and the metal support frame 100 forms a... The thickness of the fireproof and explosion-proof sealing structure 10 is no more than 150mm, ensuring that the installed lightweight integrated fireproof and explosion-proof panel 200 will not be exposed to the wall, thus maximizing the space utilization of the valve hall. This effectively avoids the problem of reduced space utilization caused by the lightweight integrated fireproof and explosion-proof panel 200 being exposed to the wall, ensuring that the prepared fireproof and explosion-proof sealing structure 10 has a fire resistance of 3h to 6h and an explosion resistance of 0.1MPa to 0.5MPa, which can well meet the fireproof and explosion-proof performance requirements of the valve side of the converter transformer, and is especially suitable for applications with a wall thickness of 150mm. In addition, because the lightweight integrated fireproof and explosion-proof panel 200 is lighter and has a simpler structure, it is not only easy to transport but also easy to install on site, effectively reducing the difficulty of on-site construction. To address the issue of reduced space utilization in the valve hall, the prepared fireproof and explosion-proof sealing structure 10 achieves a fire resistance of 3-6 hours and an explosion resistance of 0.1 MPa-0.5 MPa, effectively meeting the fireproof and explosion-proof requirements of the converter transformer valve side, and is particularly suitable for applications with walls up to 150 mm thick. Furthermore, the lightweight and simple structure of the integrated fireproof and explosion-proof plywood 200 facilitates both transportation and on-site installation, effectively reducing on-site construction difficulties.

[0055] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A lightweight, integrated fireproof and explosion-proof clamp for a converter transformer valve-side bushing, comprising two lightweight, integrated fireproof and explosion-proof clamps, both of which are detachably mounted on both sides of a metal support frame. Both lightweight, integrated fireproof and explosion-proof clamps and the metal support frame are interconnected by through holes, and the converter transformer valve-side bushing passes through these through holes. The clamp is characterized in that... The lightweight integrated fireproof and explosion-proof plywood includes a stainless steel composite fireproof and explosion-proof board, a fireproof and heat-insulating fiberboard, and a high-temperature resistant inorganic fireproof board. The fireproof and heat-insulating fiberboard is sandwiched between the stainless steel composite fireproof and explosion-proof board and the high-temperature resistant inorganic fireproof board. The total thickness of the two lightweight integrated fireproof and explosion-proof plywoods and the metal support frame is 120mm to 150mm.

2. The lightweight, thin, integrated fireproof and explosion-proof clamping plate for the valve-side bushing of a converter transformer according to claim 1, characterized in that, The total thickness of the two thin, integrated fireproof and explosion-proof clamps and the metal support frame is 150mm.

3. The lightweight, thin, integrated fireproof and explosion-proof clamping plate for the valve-side bushing of a converter transformer according to claim 1, characterized in that, The thickness of the thin and lightweight integrated fireproof and explosion-proof plywood is 30mm to 50mm; and / or the thickness of the metal support frame is 50mm to 80mm.

4. The lightweight, thin, integrated fireproof and explosion-proof clamping plate for the valve-side bushing of a converter transformer according to claim 1, characterized in that, The stainless steel composite fireproof and explosion-proof plate has a thickness of 8mm to 10mm; and / or, The fireproof and heat-insulating fiberboard has a thickness of 20mm to 30mm; and / or, The high-temperature resistant inorganic fireproof board is 8mm to 10mm thick; and / or The metal support frame is a non-magnetic 304 stainless steel support frame; and / or... The metal support frame is equipped with a heat-insulating fiber cotton layer.

5. The lightweight, thin, integrated fireproof and explosion-proof clamping plate for the valve-side bushing of a converter transformer according to claim 1, characterized in that, The stainless steel composite fireproof and explosion-proof board includes any one of stainless steel composite magnesium sulfate fireproof board, stainless steel composite fiber cement fireproof and explosion-proof board, and stainless steel composite silicate fireproof board; the fireproof and heat-insulating fiber board includes any one of aluminum silicate fiber board and ceramic fiber board; the high-temperature resistant inorganic fireproof board includes any one of low-density gray silica base board, magnesium sulfate fireproof board, and glass magnesium fireproof board.

6. The lightweight, thin, integrated fireproof and explosion-proof clamping plate for the valve-side bushing of a converter transformer according to claim 5, characterized in that, The stainless steel composite fireproof and explosion-proof board is a stainless steel composite magnesium sulfate fireproof board, which includes stainless steel plates and magnesium sulfate fireproof boards stacked in sequence. The high-temperature resistant inorganic fireproof board is connected to the magnesium sulfate fireproof board through the fireproof and heat-insulating fiber board.

7. The lightweight, thin, integrated fireproof and explosion-proof clamping plate for the valve-side bushing of a converter transformer according to claim 6, characterized in that, The stainless steel plate is connected to the magnesium sulfate fireproof board via a first adhesive layer; and / or The fireproof and heat-insulating fiberboard is connected to the magnesium sulfate fireproof board via a second adhesive layer; and / or The high-temperature resistant inorganic fireproof board is connected to the fireproof and heat-insulating fiberboard through a third adhesive layer.

8. The lightweight, thin, integrated fireproof and explosion-proof clamping plate for the valve-side bushing of a converter transformer according to claim 5, characterized in that, The stainless steel composite fireproof and explosion-proof board is a stainless steel composite fiber cement board. The lightweight integrated fireproof and explosion-proof splice also includes a locking component, which is used to lock and fix the stainless steel composite fiber cement board, the fireproof and heat-insulating fiber board and the high-temperature resistant inorganic fireproof board that are stacked in sequence.

9. The lightweight, thin, integrated fireproof and explosion-proof clamping plate for the valve-side bushing of a converter transformer according to claim 8, characterized in that, The stainless steel composite fiber cement includes a stainless steel perforated plate and a fiber cement plate stacked in sequence. The side of the stainless steel perforated plate facing the fiber cement plate has a plurality of flanged positioning holes, and the fiber cement plate has an embedded post facing the stainless steel perforated plate. Each embedded post is interference-fitted into one of the flanged positioning holes.

10. A fireproof and explosion-proof sealing structure for the valve-side bushing of a converter transformer, characterized in that, The lightweight, integrated fireproof and explosion-proof plywood includes any one of claims 1 to 9.

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