A power station fireproof wall fireproof composite prefabricated plate die forming equipment

Abstract

The present application relates to power transmission and transformation equipment supporting fireproof equipment and composite material forming equipment technical field, disclose a kind of power station fireproof wall fireproof composite prefabricated board moulding forming equipment, including assembly mould, the assembly mould is used to accommodate composite fireproof plate, the lower portion of the assembly mould is fixedly connected with rotary transmission rail, the device is set through transmission rail and first assembly area, second assembly area, protective cover, connecting frame cross distribution, cooperate assembly mould cycle indexing, paving, moulding, cooling, discharging can parallel operation, another station synchronous paving when moulding, do not need to occupy press and so on paving, reduce equipment idle time, through the setting of discharging assembly and fixture, plate automatic ejection demolding, fixture is directly clamped and transported, do not need manual pry board and move material, reduce operating intensity, through the setting of discharge assembly on connecting frame, with airflow direct blowing high-temperature plate forced cooling, save the time of static cooling, production cycle is shortened, production efficiency is improved.

Description

Technical Field

[0001] This invention relates to the technical field of fire protection equipment for power transmission and transformation equipment and composite material molding equipment, and more specifically, it relates to a molding equipment for fireproof composite precast panels for power plant firewalls. Background Technology

[0002] The main transformer area of ​​the substation is a core high-risk fire protection zone of the power station. The oil-immersed main transformers store large quantities of insulating fuel oil, and equipment failures can easily lead to oil spraying, fires, and explosions. Therefore, firewalls must be installed between the transformer foundations to achieve fire separation, prevent the spread of fire, buffer the impact of explosions, and ensure the safe operation of the power station equipment. These firewalls are subjected to harsh outdoor conditions of prolonged exposure to sunlight, fluctuating temperatures, and weathering, and must meet special performance requirements such as a fire resistance limit of no less than 3 hours, high explosion resistance, and aging resistance. Ordinary wall structures are unsuitable for these conditions.

[0003] Currently, the firewalls of main transformers in substations mostly use cast-in-place concrete or masonry structures. The construction period for cast-in-place and masonry walls is long, involves a large amount of on-site wet work, and is inconvenient for later modifications and maintenance. Fire-resistant composite precast panels can be used as prefabricated components for the construction of firewalls in the main transformer area, achieving fire separation and preventing the spread of fire.

[0004] The fireproof composite precast panels for the main transformer firewall of the substation are manufactured using a molding process, with material laying, molding, cooling, and demolding performed sequentially. Large-format fireproof composite precast panels are composed of multiple layers of functional materials. Manually laying the slurry and fiberglass cloth layer by layer requires a considerable amount of time. During the pressing and holding stage, the press station is occupied, preventing simultaneous material laying. After high-temperature molding, the panels are still hot and require static cooling and shaping before demolding, which takes extra time. After cooling and shaping, manual demolding and transfer of the panels are labor-intensive and time-consuming. The overall forming of a single precast panel is time-consuming, resulting in low production efficiency. Furthermore, during high-temperature pressing, the raw materials release volatile fumes, and the proximity of the operator's work area to the hot pressing area allows these fumes to easily spread to the operator's position. Summary of the Invention

[0005] To address the problems of existing fireproof composite precast panel molding equipment for power plant firewalls, such as sequential processes, low production efficiency, and poor working environment, this invention provides a molding equipment for fireproof composite precast panels for power plant firewalls. Through multi-station parallel operation, automatic demolding and transfer, and flue gas purification and recycling, it improves production efficiency and working environment.

[0006] To achieve the above objectives, this application provides the following technical solution: a molding equipment for fireproof composite precast panels for power plant firewalls, comprising an assembly mold for accommodating composite fireproof panels. A rotary transmission rail is fixedly connected to the lower part of the assembly mold. A discharge component and a support frame are provided on the inner side of the transmission rail. The discharge component lifts the lower part of the assembly mold upwards, and the support frame abuts against the lower part of the assembly mold. A first assembly area and a second assembly area are provided on the outer side of the transmission rail. A connecting frame and a protective cover are provided on the upper part of the transmission rail. Clamps are provided on both sides of the connecting frame. The inner side of the clamps holds the composite fireproof panels. A molding component is provided inside the protective cover. The lower part of the molding component slides with the assembly mold and presses down on the composite fireproof panels inside the assembly mold. The protective cover, connecting frame, first assembly area, and second assembly area are arranged in a cross shape around the transmission rail, with the protective cover and connecting frame adjacent to each other, and the first assembly area and second assembly area adjacent to each other.

[0007] The present invention is further configured such that the assembly mold includes an assembly box, a support rod, a base plate, a connecting rod, and casters. The assembly box is fixed to the upper part of the transmission rail. Both ends of the support rod are fixedly connected to the lower part of the assembly box and abut against the base plate. The base plate is located inside the assembly box and abuts against the supporting composite fireproof board. The upper part of the connecting rod is fixedly connected to the lower part of the base plate. The casters are installed on the lower part of the assembly box at the end away from the transmission rail.

[0008] The present invention is further configured such that the transmission rail includes a guide rail, a movable rail, transmission teeth, a servo motor, and an output gear. The movable rail is rotatably located on the upper part of the guide rail. The transmission teeth are located on the inner side of the movable rail. The servo motor is connected to the inner side of the guide rail. The output shaft of the servo motor is connected to the middle part of the output gear. The output gear is meshed with the transmission teeth. The assembly box is fixed on the upper part of the movable rail. The first assembly area and the second assembly area are both connected to the guide rail.

[0009] The present invention is further configured such that the discharge assembly includes a second hydraulic telescopic rod and a top rod, the second hydraulic telescopic rod is fixedly connected to the inner side of the movable rail, the top rod is located on the upper part of the second hydraulic telescopic rod, the upper end of the top rod abuts against the connecting rod, and the discharge assembly is located on the lower part of the connecting frame.

[0010] The present invention is further configured such that the clamp includes a clamping block, a movable rod and an electric telescopic rod, the electric telescopic rod is installed inside the connecting frame, one end of the movable rod is connected to the electric telescopic rod and the other end is connected to the clamping block, the clamping block is slidably located on both sides of the connecting frame, and the inner side of the clamping block clamps the composite fireproof board, and the lower part of the connecting frame corresponds to the assembly box.

[0011] The invention is further configured such that the support frame is disposed inside the transmission rail, the upper part of the support frame abuts against the support rod, the molding assembly includes a first hydraulic telescopic rod and a heating pressure plate, the first hydraulic telescopic rod is vertically disposed above the protective cover, the upper part of the heating pressure plate is connected to the first hydraulic telescopic rod, the outer wall of the heating pressure plate is slidably engaged with the inner wall of the assembly box, the lower part of the heating pressure plate abuts against the upper end of the composite fireproof board and moves downward to continuously apply a pressing force to the composite fireproof board.

[0012] The invention is further configured such that a transmission component is provided on the upper part of the protective cover, the lower part of the transmission component is connected to the suction component, the suction component is provided on the upper part of the heating pressure plate, the transmission component is connected to the interior of the processing box and extends to the lower part of the interior of the processing box, a filter plate is provided inside the processing box, the processing box below the filter plate contains suction water, the upper part of the processing box is connected to the discharge component installed on the connecting frame through a connecting pipe, and an exhaust groove is provided on the outer side of the connecting frame.

[0013] The present invention is further configured such that the transmission component includes an air pump, a suction pipe and a delivery pipe, the air pump is located at the upper part of the protective cover, the suction pipe and the delivery pipe are respectively connected to both ends of the air pump, the end of the delivery pipe away from the air pump is connected to the processing box, the end of the suction pipe away from the air pump is connected to the suction component, and the suction pipe slides up and down with the suction component within the through hole opened in the protective cover.

[0014] The present invention is further configured such that the suction assembly includes a suction head and a suction tube, the suction tube is disposed on the upper part of the heating pressure plate, the suction heads are linearly arrayed on the outside of the suction tube, and the upper part of the suction tube is connected to the suction tube.

[0015] The present invention is further configured such that the discharge assembly includes an exhaust pipe and an exhaust head, the exhaust pipe is located at the upper part of the connecting frame, the exhaust head is located at the lower part of the exhaust pipe and is distributed in a linear array, the exhaust head passes through the connecting frame, and the exhaust pipe is connected to the connecting pipe.

[0016] Compared with the prior art, the beneficial effects of the present invention are: Compared with the prior art, the present invention provides a molding equipment for fireproof composite precast panels for power plant firewalls, which has the following beneficial effects: 1. This fireproof composite precast panel molding equipment for power plant firewalls features a cross-shaped arrangement of a transmission rail, a first assembly area, a second assembly area, a protective cover, and a connecting frame. Combined with the cyclic rotation of the assembly mold, material feeding, molding, cooling, and unloading can be performed in parallel. During molding, another station simultaneously feeds material, eliminating the need to occupy the press and reducing idle time. The unloading components and clamps automatically eject the panels from the mold, allowing for direct clamping and transport without manual prying, thus reducing workload. The discharge components on the connecting frame provide forced cooling by direct airflow over the high-temperature panels, saving time and shortening the production cycle, thereby increasing production efficiency. 2. This fireproof composite precast panel molding equipment for power plant firewalls, through the setting of protective covers and suction components, semi-encloses the molding area and draws away the volatile fumes generated by hot pressing at close range, reducing the amount of fumes drifting to the operating area. Through the setting of absorption water and filter plates in the treatment box, the fumes are washed, filtered and purified before being discharged. The purified gas can also be sent to the discharge station as cooling air. There is less fumes near the operators, resulting in a better working environment. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the first assembly and molding state of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of the first assembly state of the present invention. Figure 3 This is a three-dimensional structural schematic diagram of the cross-section of the molded state of the present invention; Figure 4 This is a three-dimensional structural diagram of the second assembly and cooling state of the present invention; Figure 5 This is a three-dimensional structural schematic diagram of the second assembly section of the present invention; Figure 6 This is a three-dimensional structural schematic diagram of the cross-section of the present invention in a cooling state; Figure 7 For the present invention Figure 6 A magnified three-dimensional structural diagram of a portion at point A in the middle; Figure 8 For the present invention Figure 6 A magnified three-dimensional structural diagram of part B in the middle; Figure 9 This is a three-dimensional structural schematic diagram of the cross-section of the discharge component of the present invention; Figure 10 For the present invention Figure 9 A magnified three-dimensional structural diagram of part C in the middle; Figure 11 This is a three-dimensional structural diagram of the cross-section of the composite fireproof board of the present invention; Figure 12 This is a three-dimensional structural diagram of the absorption component and processing box of the present invention; Figure 13 This is a three-dimensional structural schematic diagram of the cross-section of the processing box of the present invention; Figure 14 This is a three-dimensional structural diagram of the connecting frame of the present invention viewed from below.

[0018] In the diagram: 1. Movable rail; 2. Transmission gear; 3. First assembly area; 4. Assembly box; 5. Second assembly area; 6. Composite fireproof board; 7. Casters; 8. Guide rail; 9. Protective cover; 10. First hydraulic telescopic rod; 11. Air pump; 12. Conveying pipe; 13. Suction pipe; 14. Processing box; 15. Support frame; 16. Connecting pipe; 17. Connecting frame; 18. Air outlet pipe; 19. Exhaust trough; 20. Top rod; 21. Second hydraulic telescopic rod; 22. Clamping block; 23. Base plate; 24. Connecting rod; 25. Support rod; 26. Filter plate; 27. Heating pressure plate; 28. Suction head; 29. ​​Suction pipe; 30. Electric telescopic rod; 31. Movable rod; 32. Servo motor; 33. Output gear; 34. Exhaust head. Detailed Implementation

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0021] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0022] The equipment of this invention can realize two molding operation modes. Hot pressing molding is the preferred implementation method for the production of precast panels for high-risk fireproof zones of main transformers in substations. Cold pressing is an optional additional working mode of the equipment, but the panels produced do not meet the operating conditions of the main transformer area. Example 1 is used to prepare fireproof composite precast panels for the main transformer area of ​​the booster station. The products need to meet the stringent requirements of fire resistance limit of not less than 3 hours, explosion resistance, and outdoor aging resistance.

[0023] Please see Figures 1-2 , Figures 8-9The basic load-bearing and rotational transmission parts of the whole machine are the transmission rails, which include guide rails 8, movable rails 1, transmission gears 2, servo motors 32 and output gears 33. The guide rails 8 are laid and fixed to the ground, and the ground anchoring is completed by pre-embedded bolts to ensure the stability of the overall equipment operation. The movable rails 1 are assembled on the upper part of the guide rails 8 and rotate. The movable rails 1 can rotate at a certain angle along the circumference of the guide rails 8. The transmission gears 2 are opened on the inner ring surface of the movable rails 1, and the teeth are evenly distributed along the circumference. The servo motors 32 are fixedly installed on the inner frame of the guide rails 8. The output gears 33 are fixedly mounted on the output shaft of the servo motors 32. The teeth of the output gears 33 mesh with the transmission gears 2 to form a gear pair. When the servo motors 32 are started, the output shaft drives the output gears 33 to rotate. Through gear meshing, the movable rails 1 are driven to rotate along the guide rails 8 to realize the switching of work positions.

[0024] The first assembly area 3, the second assembly area 5, the protective cover 9, and the connecting frame 17 are arranged in a cross shape around the transmission rail. The protective cover 9 and the connecting frame 17 are arranged adjacent to each other, and the first assembly area 3 and the second assembly area 5 are arranged adjacent to each other. The four workstations correspond to different operating functions: the first assembly area 3 is the lower layer material laying workstation, which completes the stacking and laying of the lower three layers of material of the board; the second assembly area 5 is the upper layer material laying workstation, which completes the laying of the upper two layers of material of the board; the inner side of the protective cover 9 is the hot pressing and molding workstation, which completes the high temperature and high pressure curing of the board; and the connecting frame 17 is the material discharge and transfer workstation, which completes the demolding and transfer of the board. Every time the movable rail 1 rotates 90°, it can drive the assembly mold to complete one workstation switch, realizing the parallel operation of multiple processes such as material laying, molding, cooling, and material discharge, solving the problems of sequential material laying and pressing and low equipment utilization of traditional single-station presses.

[0025] Please see Figure 2 , Figures 9-10 The assembly mold is used to carry the sheet metal raw materials and move with the workstation. The assembly mold includes an assembly box 4, a support rod 25, a base plate 23, a connecting rod 24, and casters 7. The assembly box 4 is an upward-opening box structure, with its bottom fixedly installed on the upper surface of the movable rail 1, rotating synchronously with the movable rail 1. The support rod 25 is arranged horizontally, with both ends fixedly connected to the upper inner wall of the assembly box 4. The upper surface of the support rod 25 abuts against the lower surface of the base plate 23, providing support for the base plate 23. The base plate 23 is a horizontal plate and is placed on the assembly box. Inside the cavity of 4, the layers of composite fireproof board 6 are directly stacked on the upper surface of the base plate 23. The connecting rod 24 is a vertical rod with its upper end fixedly connected to the center of the lower surface of the base plate 23. The connecting rod 24 passes through the through hole at the bottom of the assembly box 4 and can slide up and down along the through hole. The caster wheel 7 is installed on the bottom of the assembly box 4 away from the transmission rail. The wheel body touches the ground downwards. During the rotation of the assembly box 4 with the movable rail 1, it forms rolling support for the outer end of the assembly box and avoids the cantilever of the assembly box from tilting due to force.

[0026] The discharge assembly is located inside the movable rail 1, corresponding vertically to the discharge station of the connecting frame 17. The discharge assembly includes a second hydraulic telescopic rod 21 and a push rod 20. The second hydraulic telescopic rod 21 is vertically fixed in the inner mounting cavity of the movable rail 1. The push rod 20 is coaxially mounted on the upper end of the second hydraulic telescopic rod 21. During demolding, the second hydraulic telescopic rod 21 extends upward, and the upper end face of the push rod 20 abuts against the lower end face of the connecting rod 24, pushing the connecting rod 24 upward. This pushes the base plate 23 together with the composite fireproof plate 6 on it upward through the opening of the assembly box 4, completing automatic demolding, replacing manual demolding, and reducing the labor intensity of the operation.

[0027] The support frame 15 is fixedly installed on the inner side of the guide rail 8, and its position corresponds to the molding station of the protective cover 9. During hot pressing, the upper end face of the support frame 15 abuts against the bottom of the support rod 25, and the downward pressure applied by the molding component is directly transmitted to the support frame 15 on the ground, so as to avoid the movable rail 1 from being directly subjected to the molding load and deformed, and to ensure the pressing accuracy.

[0028] Please see Figure 3 , Figure 6 , Figures 12-13 The protective cover 9 is installed above the molding station, with a downward opening to form a semi-enclosed working space, which can reduce the outward diffusion of hot-pressed fumes. The molding assembly is set inside the protective cover 9. The molding assembly includes a first hydraulic telescopic rod 10 and a heating plate 27. The first hydraulic telescopic rod 10 is vertically fixedly installed on the top plate of the protective cover 9, and the end of the telescopic rod extends downward into the interior of the protective cover. The heating plate 27 is a plate with an integrated electric heating element inside. The center of the upper surface is fixedly connected to the lower end of the first hydraulic telescopic rod 10. The outer dimensions of the heating plate 27 are adapted to the inner cavity dimensions of the assembly box 4, and the outer side wall slides in fit with the inner wall of the assembly box 4. In this embodiment, the heating plate 27 is energized to activate the heating function. When the first hydraulic telescopic rod 10 extends downward, it drives the heating plate 27 to slide down along the inner wall of the assembly box 4, applying pressure to the composite fireproof board 6 raw material stacked inside. At the same time, the heating plate 27 transfers heat to the board, so that the board can be cured and molded under high temperature and high pressure conditions, ensuring the density of the board and the degree of resin cross-linking, and meeting the high performance requirements of the fireproof board in the main transformer area.

[0029] A transmission component is installed on the upper part of the protective cover 9, and an absorption component is installed on the upper part of the heating pressure plate 27 to complete the collection and transportation of hot-pressed flue gas. The transmission component includes an air pump 11, an absorption pipe 13, and a delivery pipe 12. The air pump 11 is fixedly installed on the top outer wall of the protective cover 9. The absorption pipe 13 and the delivery pipe 12 are respectively connected to the air inlet and outlet of the air pump 11. The absorption component includes an air suction head 28 and an air suction pipe 29. The air suction pipe 29 is laid horizontally on the upper surface of the heating pressure plate 27. The air suction heads 28 are arranged in a linear array along the axial direction of the air suction pipe 29. The air suction port faces downward toward the gap area between the plate and the pressure plate. The lower end of the absorption pipe 13 passes through the through hole opened at the top of the protective cover 9 and communicates with the pipe opening of the air suction pipe 29. The absorption pipe 13 and the through hole are in sliding fit and can move up and down synchronously with the heating pressure plate 27 to ensure that the suction position is always close to the molding area.

[0030] During the hot pressing process, the volatile fumes released from the heated raw material are drawn and collected at close range by the suction head 28, flowing sequentially through the suction pipe 29 and the suction pipe 13 into the air pump 11, and then sent into the interior of the treatment box 14 through the conveying pipe 12. The treatment box 14 is a sealed box with a filter plate 26 arranged horizontally inside. Absorbent water is placed in the box below the filter plate 26. The outlet of the conveying pipe 12 extends below the liquid surface of the absorbent water. After the fumes enter the treatment box 14, they are first washed and adsorbed by the absorbent water, and then filtered for particulate matter by the filter plate 26. After purification, the fumes are output from the connecting pipe 16 at the top of the treatment box 14, preventing the fumes from spreading to the operator's work area and improving the working environment.

[0031] Please see Figure 4 , Figure 7 , Figure 14 The connecting frame 17 is mounted above the unloading station. Clamps are symmetrically arranged on both sides of the connecting frame 17 to clamp the demolded board and complete the transfer. The clamps include clamping blocks 22, movable rods 31 and electric telescopic rods 30. The electric telescopic rods 30 are installed horizontally in the internal cavity of the connecting frame 17. One end of the movable rod 31 is connected to the rod end of the electric telescopic rod 30, and the other end extends outward through the side wall of the connecting frame 17 and is fixedly connected to the outside of the clamping blocks 22. The clamping blocks 22 are vertical clamping blocks. The two clamping blocks 22 are symmetrically arranged on both sides of the connecting frame 17. When the electric telescopic rod 30 extends and retracts, it drives the clamping blocks 22 on both sides to open and close synchronously through the movable rod 31. When the composite fireproof board 6 is ejected from the mold and rises to the clamping height, the clamping blocks 22 on both sides retract inward and clamp the side of the composite fireproof board 6 on the inside, so that the board can be clamped from the mold and transferred to the next process, realizing automated unloading.

[0032] The connecting frame 17 is equipped with a discharge assembly for forced cooling of the newly demolded high-temperature board. The discharge assembly includes an exhaust pipe 18 and an exhaust head 34. The exhaust pipe 18 is laid horizontally on the upper part of the connecting frame 17, and the exhaust heads 34 are arranged in a linear array along the axial direction of the exhaust pipe 18. The exhaust heads 34 penetrate downward through the top plate of the connecting frame 17. The end of the connecting pipe 16 is connected to the opening of the exhaust pipe 18. An exhaust groove 19 is opened on the lower side of the connecting frame 17. The position of the exhaust groove 19 corresponds vertically to that of the exhaust head 34. The airflow purified by the treatment box 14 is sent into the exhaust pipe 18 through the connecting pipe 16, and then blown downward through the exhaust head 34. After passing through the exhaust groove 19, it is directly blown onto the surface of the newly demolded high-temperature composite fireproof board 6 to accelerate the cooling and shaping of the board. The air after heat exchange is discharged outward through the exhaust groove 19 to achieve airflow circulation.

[0033] Please see Figure 11 It has a five-layer composite structure, including two top and bottom surface layers, a thick core layer in the center, and two fiberglass layers between the surface layer and the thick core layer. The surface layer is made of flame-retardant and wear-resistant material, the thick core layer is made of inorganic fireproof core material, and the fiberglass layer is made of reinforced fiberglass cloth. The board is laid in two stages, with the fiberglass layer laid in two separate work stations to ensure uniform and non-misaligned laying. After being hot-pressed under high temperature and high pressure in this embodiment, the materials of each layer are tightly bonded, the porosity of the board is low, the interlayer bonding strength is high, and the fire resistance limit of the finished product is stable at more than 3 hours. The explosion impact resistance and outdoor aging resistance both meet the usage requirements of the high-risk fire protection zone of the main transformer of the substation.

[0034] Example 2 is an additional optional working mode of the equipment. The hardware structure of the whole machine and the assembly position relationship of each component are completely the same as in Example 1. The cold pressing operation is achieved only by shutting down some functional units.

[0035] During the operation, the electric heating function of the heating plate 27 is turned off, and it is used only as a normal pressing plate. At the same time, the air pump 11 and the entire flue gas absorption and treatment assembly are not started, and the air supply cooling function of the exhaust assembly is turned off. The heating plate 27 is driven to move downward by the first hydraulic telescopic rod 10 to apply pressure to the plate material inside the assembly box 4 and complete the molding under pressure at room temperature.

[0036] The composite fireproof board 6 produced by this method also has a five-layer structure consisting of a surface layer, a fiberglass layer, and a thick core layer. However, since it has not undergone high-temperature curing, the overall density and interlayer bonding strength of the board are lower than those of hot-pressed products. Its fire resistance, impact resistance, and outdoor weather resistance cannot meet the technical indicators of the high-risk zoning of the main transformer in the substation. It is only suitable for indoor fireproof partitions in ordinary buildings where fire resistance requirements are not high, and is not a recommended implementation method for firewalls of the main transformer in power stations.

[0037] Working principle: Hot pressing molding, optimal solution for main transformer area Composite fireproof panels are mainly used for fireproof partitioning in the main transformer area of ​​a substation. The main transformer area of ​​a substation typically houses multiple oil-immersed transformers, each containing a large amount of insulating fuel oil. Equipment malfunctions can easily lead to oil spraying, fires, or even explosions. Without reliable protection between two adjacent transformers, a fire in one can quickly spread to the other, escalating the accident. Therefore, firewalls must be installed between the foundations of adjacent transformers to both prevent the spread of fire and buffer the impact of an explosion, protecting nearby equipment. Precast fireproof panels can be directly assembled between two transformers on-site, eliminating the need for on-site pouring. This allows for quick installation, and the finished product has a fire resistance of over 3 hours, meeting the requirements for explosion resistance and outdoor aging resistance in the main transformer area.

[0038] Two sets of assembly molds are symmetrically arranged on the movable rail 1. Their initial positions correspond to the molding station of the first assembly area 3 and the protective cover 9, respectively. The operator lays the lower layer, the lower fiberglass layer, and the thick core layer in sequence in the assembly box 4 located in the first assembly area 3 to complete the stacking of the three lower layers of materials.

[0039] Servo motor 32 drives the movable rail 1 to rotate 90°, and the assembly box 4, which has completed the laying of the lower three layers of materials, moves to the second assembly area 5. The operator continues to lay the upper fiberglass layer and the upper surface layer in the assembly box 4 to complete the stacking of the upper two layers of materials. The two fiberglass layers are laid in two separate workstations to ensure that the layers are flat and aligned. At the same time, another set of symmetrical assembly boxes 4 rotates with the movable rail to the first assembly area 3 to carry out the laying of the lower three layers of materials simultaneously, so as to achieve parallel operation of the process.

[0040] The movable rail 1 continues to rotate 90°, and the assembly box 4, which has completed all the material laying, moves to the molding station under the protective cover 9. The support frame 15 is aligned with the support rod 25 and positioned to support it. The first hydraulic telescopic rod 10 drives the heating plate 27 to move downward. The heating plate 27 is energized and heats up, applying high pressure to the board material in the assembly box 4 while transferring heat to complete the high-temperature and high-pressure curing. During the hot pressing process, the air pump 11 is started, and the air suction head 28 extracts the volatile fumes generated by the hot pressing at close range. The fumes are sent to the treatment box 14 through the air suction pipe 29, the suction pipe 13, and the conveying pipe 12. They are first washed and purified by absorbing water in the box, and then filtered by the filter plate 26 to remove impurities. The purified airflow is continuously transported to the air outlet pipe 18 of the connecting frame 17 through the connecting pipe 16. While the hot pressing operation is underway, another set of assembly boxes simultaneously completes the upper layer laying in the second assembly area 5.

[0041] After the hot pressing and pressure holding are completed, the heating plate 27 moves upward to reset, the movable rail 1 rotates 90° again, and the assembly box 4 carrying the hot-pressed high-temperature plate moves to the cooling and unloading station below the connecting frame 17. The purified airflow in the air outlet pipe 18 is sprayed downward through the exhaust head 34, and forced air is delivered directly to the surface of the high-temperature plate to accelerate cooling and shaping. The air after heat exchange is discharged outward through the exhaust groove 19 on the lower side of the connecting frame 17.

[0042] After the board cools and sets, the second hydraulic telescopic rod 21 extends upward, the top rod 20 pushes against the connecting rod 24, and drives the bottom plate 23 to push the composite fireproof board 6 upward out of the assembly box 4. The board rises to the clamping height of the connecting frame 17, and the electric telescopic rod 30 drives the clamping blocks 22 on both sides to retract inward, clamping the side of the composite fireproof board 6 and fixing the board at the discharge station.

[0043] After the clamp holds and fixes the board, the empty assembly box 4 continues to rotate 90° with the movable rail 1 and returns to the first assembly area 3 to enter the next round of raw material laying cycle. The finished composite fireproof board 6 that is stuck at the discharge station can be unloaded manually or by the matching handling device and transferred to the finished product stacking area.

[0044] By using two sets of assembly molds to rotate in a cycle and four workstations to operate in parallel, the continuous flow of material laying, molding, cooling and unloading is achieved, which greatly shortens the production cycle of a single board and improves the overall production efficiency.

[0045] Cold pressing molding, preferred solution for non-main transformer areas This embodiment is an additional optional working mode of the equipment. The hardware structure of the whole machine and the assembly position relationship of each component are completely the same as in embodiment 1. The cold pressing operation is achieved only by turning off some functional units.

[0046] During the operation, the electric heating function of the heating plate 27 is turned off, and it is used only as a normal pressing plate. At the same time, the air pump 11 and the entire set of flue gas absorption and treatment components are not started, and the air supply cooling function of the exhaust component is turned off. The heating plate 27 is driven to move down by the first hydraulic telescopic rod 10 to apply pressure to the sheet material inside the assembly box 4. The molding is completed under pressure at room temperature. The material laying process, station flow, demolding and transfer process are consistent with those in Example 1.

[0047] The composite fireproof board 6 produced by this method also has a composite structure of two surface layers, two fiberglass layers, and one thick core layer. However, since it has not undergone high-temperature curing, the overall density and interlayer bonding strength of the board are lower than those of hot-pressed products. Its fire resistance, impact resistance, and outdoor weather resistance cannot meet the technical indicators of the high-risk zoning of the main transformer of the substation. It is only suitable for indoor fireproof partitions in ordinary buildings with low fire resistance requirements and is not a recommended implementation method for firewalls of the main transformer of the power station.

[0048] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A molding equipment for fireproof composite precast panels for power plant firewalls, comprising an assembly mold, characterized in that: The assembly mold is used to accommodate the composite fireproof board (6). A transmission rail is fixedly connected to the lower part of the assembly mold. A discharge component and a support frame (15) are provided on the inner side of the transmission rail. The discharge component lifts the lower part of the assembly mold upwards. The support frame (15) abuts against the lower part of the assembly mold. A first assembly area (3) and a second assembly area (5) are provided on the outer side of the transmission rail. A connecting frame (17) and a protective cover (9) are provided on the upper part of the transmission rail. The connecting frame (17) has a connecting frame (17) and a protective cover (9) on both sides. A clamp is provided, the inner side of which holds the composite fireproof board (6). A molding component is provided inside the protective cover (9). The lower part of the molding component slides with the assembly mold and presses down on the composite fireproof board (6) inside the assembly mold. The protective cover (9), the connecting frame (17), the first assembly area (3) and the second assembly area (5) are arranged in a cross shape around the transmission rail. The protective cover (9) and the connecting frame (17) are adjacent to each other, and the first assembly area (3) and the second assembly area (5) are adjacent to each other.

2. The molding equipment for fireproof composite precast panels for power plant firewalls according to claim 1, characterized in that: The assembly mold includes an assembly box (4), a support rod (25), a base plate (23), a connecting rod (24), and a caster wheel (7). The assembly box (4) is fixed to the upper part of the transmission rail. The two ends of the support rod (25) are fixedly connected to the lower part of the assembly box (4) and abut against the base plate (23). The base plate (23) is located inside the assembly box (4) and abuts against the composite fireproof board (6). The upper part of the connecting rod (24) is fixedly connected to the lower part of the base plate (23). The caster wheel (7) is installed on the lower part of the assembly box (4) away from the transmission rail.

3. The molding equipment for fireproof composite precast panels for power plant firewalls according to claim 2, characterized in that: The transmission rail includes a guide rail (8), a movable rail (1), a transmission gear (2), a servo motor (32), and an output gear (33). The movable rail (1) is rotatably located on the upper part of the guide rail (8). The transmission gear (2) is located on the inner side of the movable rail (1). The servo motor (32) is connected to the inner side of the guide rail (8). The output shaft of the servo motor (32) is connected to the middle part of the output gear (33). The output gear (33) meshes with the transmission gear (2). The servo motor (32) drives the movable rail (1) to rotate and switch positions through the output gear (33) and the transmission gear (2). The assembly box (4) is fixed on the upper part of the movable rail (1). The first assembly area (3) and the second assembly area (5) are both connected to the guide rail (8).

4. The molding equipment for fireproof composite precast panels for power plant firewalls according to claim 3, characterized in that: The discharge assembly includes a second hydraulic telescopic rod (21) and a top rod (20). The second hydraulic telescopic rod (21) is fixedly connected to the inner side of the movable rail (1). The top rod (20) is located on the upper part of the second hydraulic telescopic rod (21). The upper end of the top rod (20) abuts against the connecting rod (24). The discharge assembly is located at the lower part of the connecting frame (17).

5. The molding equipment for fireproof composite precast panels for power plant firewalls according to claim 1, characterized in that: The clamp includes a clamping block (22), a movable rod (31), and an electric telescopic rod (30). The electric telescopic rod (30) is installed inside the connecting frame (17). One end of the movable rod (31) is connected to the electric telescopic rod (30), and the other end is connected to the clamping block (22). The clamping block (22) slides on both sides of the connecting frame (17), and the inner side of the clamping block (22) clamps the composite fireproof board (6). The lower part of the connecting frame (17) corresponds to the assembly box (4).

6. The molding equipment for fireproof composite precast panels for power plant firewalls according to claim 2, characterized in that: The support frame (15) is located inside the transmission rail. The upper part of the support frame (15) abuts against the support rod (25). The molding assembly includes a first hydraulic telescopic rod (10) and a heating plate (27). The first hydraulic telescopic rod (10) is vertically located on the upper part of the protective cover (9). The upper part of the heating plate (27) is connected to the first hydraulic telescopic rod (10). The outer wall of the heating plate (27) slides against the inner wall of the assembly box (4). The lower part of the heating plate (27) abuts against the upper end of the composite fireproof board (6) and moves downward to continuously apply pressure to the composite fireproof board (6).

7. The molding equipment for fireproof composite precast panels for power plant firewalls according to claim 6, characterized in that: The upper part of the protective cover (9) is provided with a transmission component, the lower part of the transmission component is connected to the suction component, the suction component is provided on the upper part of the heating pressure plate (27), the transmission component is connected to the interior of the processing box (14) and extends to the lower part of the interior of the processing box (14), the interior of the processing box (14) is provided with a filter plate (26), the processing box (14) below the filter plate (26) contains suction water, the upper part of the processing box (14) is connected to the discharge component installed on the connecting frame (17) through the connecting pipe (16), and the outer side of the connecting frame (17) is provided with an exhaust groove (19).

8. The molding equipment for fireproof composite precast panels for power plant firewalls according to claim 7, characterized in that: The transmission assembly includes an air pump (11), a suction pipe (13), and a delivery pipe (12). The air pump (11) is located on the upper part of the protective cover (9). The suction pipe (13) and the delivery pipe (12) are respectively connected to both ends of the air pump (11). The end of the delivery pipe (12) away from the air pump (11) is connected to the processing box (14). The end of the suction pipe (13) away from the air pump (11) is connected to the suction assembly. The suction pipe (13) slides up and down with the suction assembly in the through hole opened in the protective cover (9).

9. The molding equipment for fireproof composite precast panels for power plant firewalls according to claim 8, characterized in that: The suction assembly includes a suction head (28) and a suction tube (29). The suction tube (29) is located on the upper part of the heating plate (27). The suction heads (28) are arranged in a linear array on the outside of the suction tube (29). The upper part of the suction tube (29) is connected to the suction tube (13).

10. The molding equipment for fireproof composite precast panels for power plant firewalls according to claim 7, characterized in that: The exhaust assembly includes an exhaust pipe (18) and an exhaust head (34). The exhaust pipe (18) is located on the upper part of the connecting frame (17), and the exhaust head (34) is located on the lower part of the exhaust pipe (18) and is arranged in a linear array. The exhaust head (34) passes through the connecting frame (17), and the exhaust pipe (18) is connected to the connecting pipe (16).

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