Method for integrally designing, separating and sectionally constructing explosion-proof wall facility of hazardous chemical fire station

Abstract

The invention discloses a method for integrally designing, separating and sectionally constructing a hazardous chemical fire station explosion-proof wall facility, belongs to the technical field of hazardous chemical substance storage and fire protection engineering, and aims to solve the problems that an existing hazardous chemical fire station explosion-proof wall is long in overall construction period, large in construction and operation interference, inconvenient to reform and maintain in the later period and poor in safety. And the explosion-proof function and the fireproof function are disjointed. According to the method, efficient construction and function integration of explosion-proof wall facilities are achieved through the core process of overall function planning, separation, segmentation and splitting, modular prefabrication, field segmentation installation, system linkage debugging and segmentation acceptance and commissioning. A fire prevention and explosion venting integrated structure is synchronously integrated, explosion-proof wall units constructed in a segmented mode are linked through an interconnection pipe network assembly, graded absorption of explosion impact, dynamic dispatching of fire-fighting media and active response of fire extinguishing and explosion suppression are achieved, construction flexibility and protection reliability are both considered, the construction requirements of dangerous chemical fire stations of different scales and different site conditions are met, and the safety and reliability of fire protection are improved. The construction period is greatly shortened, the construction risk is reduced, and later operation and maintenance and function upgrading are facilitated.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of hazardous chemical warehouse storage and fire protection engineering, and particularly relates to a method for constructing a hazardous chemical fire station explosion-proof wall facility in an integrated design and separated segments. BACKGROUND

[0002] As a core place for storing and transferring dangerous chemicals, the reliability of the safety protection facility of the hazardous chemical fire station is directly related to the safety of personnel life, property and ecological environment. The explosion-proof wall as a key protection facility of the hazardous chemical fire station is mainly used for resisting the shock wave generated by the explosion of dangerous chemicals, blocking the spread of fire, and reducing the diffusion risk of explosion accidents.

[0003] The existing explosion-proof wall of the hazardous chemical fire station is mostly constructed in an integrated pouring or integrated assembly manner, which has the following technical defects: first, the integrated construction period is long, a large amount of site needs to be occupied during the construction process, which seriously interferes with the daily operation of the hazardous chemical fire station and the transfer of dangerous chemicals, and the risk avoidance of the construction personnel and equipment is difficult once an emergency such as leakage or explosion of dangerous chemicals occurs during the construction process; second, the integrated structure has poor flexibility, if the explosion-proof wall needs to be modified or functionally upgraded according to the change of the storage scale and type of dangerous chemicals, the entire structure needs to be disassembled and reconstructed, which has high construction cost, long construction period, and causes the entire fire station to suspend the protection function; third, the existing explosion-proof wall mostly only has a single explosion-proof function, and the explosion-proof wall with partial fireproof function has a disconnection between the fireproof and explosion relief functions, cannot realize active fire extinguishing and explosion suppression after the explosion shock is triggered, and the integrated structure is easy to produce fragments and cause chain accidents during explosion; fourth, the structural size precision is difficult to control during the integrated construction process, and it is difficult to troubleshoot and handle local faults during the later operation and maintenance.

[0004] In view of the above problems, it is urgent to develop an explosion-proof wall facility construction method which takes into account the construction efficiency, flexibility and protection reliability, realizes efficient construction, convenient operation and maintenance and explosion-proof and fireproof integrated function of the explosion-proof wall, and adapts to the special protection needs of the hazardous chemical fire station. SUMMARY

[0005] The purpose of the present application is to provide an explosion-proof wall facility construction method for a hazardous chemical fire station in an integrated design and separated segments, which solves the technical problems of long construction period, serious construction and operation interference, inconvenient later modification and maintenance, and disconnection between explosion-proof and fireproof functions of the existing explosion-proof wall of the hazardous chemical fire station.

[0006] In order to achieve the above purpose, the technical scheme adopted by the present application is, An explosion-proof wall facility construction method for a hazardous chemical fire station in an integrated design and separated segments, comprising the following steps: S1. Overall functional planning and design: Based on the site layout of the hazardous chemical fire station, the types of stored hazardous chemicals, and the requirements for explosion-proof and fireproofing grades, the overall functional positioning, structural parameter calculation, and system linkage scheme design of the explosion-proof wall facility are completed. The overall protection range, explosion relief threshold, fireproofing medium adaptation type, and interconnection linkage logic of the explosion-proof wall are determined, and the overall design scheme is formed. S2. Separation and segmentation design: Based on the overall design scheme, according to the site boundary, construction partition, stress partition, and later operation and maintenance requirements, the overall explosion-proof wall is divided into multiple independent explosion-proof wall segment units. Each segment unit is equipped with complete explosion-proof, fireproofing, and triggering linkage components. The structural size, connection interface, and functional division of each segment unit are determined to ensure that the segment units do not affect the overall protection performance and system linkage effect after being split. S3. Modular prefabrication production: According to the segmentation design parameters, the main structure, interconnection pipe network components, explosion-proof plate components, pressure-bearing sealing components, and linkage components of each explosion-proof wall segment unit are produced using factory modular prefabrication methods. The pre-installation and debugging of each component are completed during the prefabrication process to ensure the structural precision and functional integrity of each segment unit. After prefabrication, factory detection is performed. S4. On-site separation and segmentation installation: According to the construction progress plan, on-site installation of each explosion-proof wall segment unit is carried out in different regions and stages. The main body of the segment unit is first fixed and installed, and then mechanical connection and pipe network communication between segment units are achieved through pre-set connection interfaces. Construction channels and operation and maintenance interfaces are reserved during installation to avoid mutual interference between different segment constructions. S5. System linkage debugging: After all segment units are installed, overall linkage debugging is started. The debugging content includes: impact displacement response accuracy of explosion-proof plate, sealing performance of pressure-bearing sealing components, pressure stability of interconnection pipe network components, and flow smoothness of fire-fighting medium. The linkage logic of each segment unit and the central control system is debugged to ensure that the segment units can respond in stages and the interconnection pipe network can realize centralized scheduling and precise injection of fire-fighting medium after explosion impact triggering. S6. Segment acceptance and commissioning: The method of "segment acceptance and overall review" is adopted. Each installed and debugged segment unit is individually accepted. After passing the acceptance, it can be temporarily put into local protection use. After all segment units pass the acceptance and complete the overall review, the explosion-proof wall facility is fully commissioned. S7. Later segment operation and maintenance and upgrading: Based on the operation state of each segment unit, segment inspection, maintenance, and fault diagnosis are carried out. If functional upgrading or structural modification is needed, individual or partial segment units can be individually disassembled and modified without affecting the normal operation of other segment units.

[0007] As preferred, in step S1, the overall function planning design further comprises: calculating the shock wave pressure and flame spread speed in the case of dangerous chemical explosion, matching the blast-proof plate material, thickness and elastic biasing member stiffness of the blast-proof wall segmented unit, determining the preset positive pressure value and fire-fighting medium type of the interconnected pipe network assembly, the fire-fighting medium being one or more of water-based extinguishing agent, fluidized dry powder or inert gas.

[0008] As preferred, in step S2, the separation and segmentation splitting needs to meet: a sealing connection structure is arranged at the abutment of adjacent segmented units, the connection structure has pressure-bearing and stretchability, can adapt to construction errors and temperature deformation, and the blast-proof level and fireproof performance of the abutment are consistent with those of the main body of the segmented unit; the blast-proof threshold of each segmented unit can be individually set according to the dangerous chemical risk level of the region where it is located, so as to realize graded blast-proof.

[0009] As preferred, in step S3, during the modular prefabrication production, the main structure of each blast-proof wall segmented unit adopts a composite wall panel, which includes inner and outer steel plates and A-level non-combustible fireproof and heat-insulating core material filled therebetween, the fireproof and heat-insulating core material being high-density rock wool, foam concrete or calcium silicate board; the interconnected pipe network assembly includes a storage unit arranged inside the segmented unit and an inter-panel connecting pipeline connecting the storage units, the storage unit being provided with a release port sealed by a pressure-bearing sealing assembly.

[0010] As preferred, in step S3, the blast-proof plate assembly is preinstalled on the main body of the segmented unit through a connecting assembly, the connecting assembly including a guide member for guiding the linear displacement of the blast-proof plate and an elastic biasing member for maintaining a preset distance between the blast-proof plate and the main body of the segmented unit when at rest, and the stiffness of the elastic biasing member can be adjusted according to the blast-proof threshold requirement; the linkage assembly includes an impact member fixedly connected with the blast-proof plate for damaging the locking member of the pressure-bearing sealing assembly when the blast-proof plate is displaced.

[0011] As preferred, in step S4, during the on-site segmented installation, the connection of the interconnected pipe network assembly adopts a flange abutment method, and a sealing gasket is arranged at the abutment to ensure the sealing of the pipe network; the main body of the segmented unit is installed by expansion bolts or pre-buried steel plates, and after installation is completed, the connection parts are treated for corrosion and fireproofing.

[0012] As preferred, in step S5, during the system linkage debugging, the preset positive pressure debugging of the interconnected pipe network assembly is 2-4 times the standard atmospheric pressure, the pipe network pressure is monitored in real time by a mechanical pressure indicator to ensure stable pipe network pressure; the response sensitivity of the linkage assembly is debugged to ensure that the blast-proof plate can quickly displace when subjected to an explosion impact of a preset threshold, trigger the pressure-bearing sealing assembly to open, form a pressure relief channel, and guide the flow of fire-fighting medium.

[0013] Preferably, in step S6, the indicators for the segmented acceptance include structural size deviation of the segmented unit, displacement response accuracy of the explosion-proof plate, sealing performance of the pressure-bearing sealing assembly, pressure loss of the interconnected pipe network, and injection efficiency of the fire-fighting medium, and the indicators for the overall review include linkage coordination of each segmented unit, overall explosion-proof and fire-proof performance, and emergency response speed.

[0014] Preferably, in step S7, during the later operation and maintenance, the mechanical pressure indicator arranged on the outer surface of the segmented unit is used to regularly inspect the pressure state of the interconnected pipe network; if the explosion-proof plate, the pressure-bearing sealing assembly, or the linkage assembly of a certain segmented unit fails, the segmented unit can be individually disassembled for repair and replacement, and after the repair is completed, individual debugging and acceptance are performed without the need to stop the operation of the overall explosion-proof wall facility.

[0015] The method for designing the explosion-proof wall facility of the hazardous chemical fire-fighting station by separation and segmentation construction has the characteristics that it further includes an emergency drill step: periodically carrying out segmented emergency drills after being put into use, simulating explosion scenes in different regions, checking the explosion relief effect of each segmented unit, the dispatching efficiency of the fire-fighting medium, and the system linkage response speed, and optimizing the linkage logic and operation and maintenance scheme of the segmented unit according to the drill results.

[0016] Preferably, Compared with the prior art, the advantages and positive effects of the present application are that The overall construction pain points are solved: the overall explosion-proof wall is split into independent segmented units by adopting the "overall design, separation and segmentation construction" mode, modular prefabrication, and segmented installation, which greatly shortens the on-site construction period, reduces the mutual interference between construction and hazardous chemical fire-fighting station operation, reduces the safety risks in the construction process, avoids the inconvenience of post-construction maintenance, and can realize segmented maintenance and segmented upgrading, with high flexibility; The explosion-proof and fire-proof integrated linkage is realized: the fire-proof and explosion relief integrated structure is integrated, the segmented units are linked through the interconnected pipe network assembly, after the explosion impact is triggered, the explosion-proof plate absorbs the impact energy through displacement, avoids the fragment ejection, and at the same time, the linkage assembly triggers the opening of the pressure-bearing sealing assembly, the dynamic dispatching and centralized injection of the fire-fighting medium are realized by using the preset positive pressure of the pipe network, the explosion relief action and the active fire extinguishing and explosion suppression action are integrated and coupled, and the emergency protection reliability is improved; Strong adaptability and convenient operation and maintenance: the segmented units can be flexibly split and combined according to site conditions and risk levels to adapt to the construction needs of hazardous chemical fire-fighting stations of different scales and different site conditions; the segmented inspection and segmented maintenance mode is adopted for later operation and maintenance, which can quickly locate and handle local faults without stopping the overall protection function, reduces the operation and maintenance cost, and improves the operation and maintenance efficiency; Reliable structure and controllable precision: factory modular prefabricated production is adopted to effectively control the sectional unit structure precision and assembly quality, and the sectional installation is connected through standardized interfaces to ensure the sealing, pressure bearing and linkage coordination of the overall structure, and the structural reliability and construction convenience are considered. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 A front view of the dangerous warehouse wallboard structure with fireproof and explosion venting functions provided by the present application; Figure 2 One of the cross-sectional views of the dangerous warehouse wallboard structure with fireproof and explosion venting functions provided by the present application; Figure 3 The second cross-sectional view of the dangerous warehouse wallboard structure with fireproof and explosion venting functions provided by the present application; Figure 4 The structure shown in A is a partial enlarged schematic view; Figure 3 Figure 5 The structure shown in B is a partial enlarged schematic view; Figure 3 The structure shown in B is a partial enlarged schematic view; Figure 6 Figure 3 The structure shown in B is a partial enlarged schematic view.

[0019] Explanation of reference signs: 1, wallboard unit; 2, interconnected pipe network assembly; 201, storage unit; 202, inter-plate connecting pipe; 203, release port; 3, explosion-proof plate; 4, pressure-bearing sealing assembly; 401, sealing disc; 402, locking piece; 403, anti-dropping piece; 5, linkage assembly; 6, mechanical pressure indicator; 7, flow guide piece; 8, connecting assembly; 801, guide piece; 802, elastic biasing piece. DETAILED DESCRIPTION

[0020] In order to more clearly illustrate the above-mentioned purposes, features and advantages of the present application, the present application will be further described below in combination with the drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0021] ​​Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1, such as Figures 1-6 As shown, this invention provides a method for designing and constructing a hazardous chemical fire station explosion-proof wall facility in a modular, segmented manner. The core concept is "overall planning, segmented construction, modular prefabrication, and integrated operation." By splitting the overall explosion-proof wall into independent segmented units, modular prefabrication, segmented installation, and operation and maintenance are achieved. Simultaneously, an integrated explosion-proof and fire-resistant structure is integrated to ensure that segmented construction does not affect the overall protective performance. Specifically, the method includes the following steps: S1. Overall Functional Planning and Design First, based on the site topography, overall layout, types of stored hazardous chemicals (such as flammable, explosive, and corrosive chemicals), storage capacity, and pre-set explosion-proof and fire-resistant ratings of the hazardous chemical fire station, the overall functional positioning and scheme design of the explosion-proof wall facility are completed. Core design contents include: calculating the shock wave pressure and flame spread speed generated during a hazardous chemical explosion to determine the overall protection range, wall height, and thickness of the explosion-proof wall; matching the materials (lightweight metal, engineering plastics, or fiber-reinforced composite materials), thickness, and stiffness of the elastic offset components of the explosion-proof panels, and setting the explosion relief threshold; determining the laying path, pipe diameter, and pre-set positive pressure value (2-4 times standard atmospheric pressure) of the interconnecting pipeline components, and selecting suitable fire-fighting media (water-based extinguishing agents, fluidized dry powder, or inert gases); designing the linkage logic between the central control system and each segment unit, clarifying the explosion relief process of the explosion-proof wall, the dispatching path of the fire-fighting media, and the response sequence of fire suppression and explosion extinguishing after the explosion impact is triggered, forming a complete overall design scheme to ensure that the overall scheme takes into account protective performance, construction feasibility, and ease of later operation and maintenance.

[0023] S2. Separate and segmented design Based on the overall design scheme determined by S1, the following core principles were followed for segmentation: First, the principle of site adaptability: according to the site boundaries and construction zones of the fire station, the segmented units are adapted to the on-site construction conditions, facilitating the entry and operation of construction equipment; Second, the principle of reasonable stress distribution: according to the stress distribution of the explosion-proof wall, the overall structure is divided into multiple stress-balanced segmented units to avoid excessive stress on a single segmented unit leading to structural failure; Third, the principle of convenient operation and maintenance: considering the needs of later inspection, maintenance, and renovation, the segmented units are all independent functional modules that can be disassembled, repaired, or upgraded individually; Fourth, the principle of seamless linkage: standardized connection interfaces are reserved during the disassembly to ensure that the overall explosion-proof, fireproof, and linkage functions are not affected after the segmented units are connected.

[0024] Each segmented unit is configured with complete functional components, including an explosion-proof wall main body, an interconnected pipe network storage unit, an explosion-proof plate assembly, a pressure-bearing sealing assembly, a linkage assembly, and a mechanical pressure indicator; a sealed telescopic connection structure is provided at the abutment of adjacent segmented units, which can adapt to construction errors and temperature deformation, and the explosion-proof grade and fireproof performance of the abutment are consistent with those of the segmented unit main body; the explosion venting threshold of each segmented unit can be individually set according to the risk level of the hazardous chemicals in the area where it is located, thereby achieving graded explosion venting and avoiding the failure of protection caused by overload of a single explosion venting point.

[0025] S3. Modular prefabrication production To improve construction efficiency and control structural precision, a modular production mode of "factory prefabrication and on-site installation" is adopted, and various components of each segmented unit of the explosion-proof wall are produced according to the segmented split design parameters determined in S2: 1. Segmented unit main body: a composite wall plate structure composed of inner and outer steel plates and A-grade non-combustible fireproof and heat-insulating core material (high-density rock wool, foam concrete, or calcium silicate board) filled therebetween, the inner and outer steel plates are used to provide structural strength and air tightness, and the fireproof and heat-insulating core material is used to block the spread of fire and improve fireproof performance; 2. Interconnected pipe network assembly: including a storage unit (provided inside the segmented unit for storing fire-fighting medium) and an inter-plate connecting pipeline (used to connect the storage units of each segmented unit to form a continuous sealed pressure-bearing pipe network), the storage unit is provided with a release port, and the release port is sealed by a pressure-bearing sealing assembly; 3. Explosion-proof plate assembly: made of lightweight high-strength material, pre-installed in the segmented unit main body through a connecting assembly (guide + elastic biasing member), the guide restricts the linear displacement of the explosion-proof plate to avoid tilting and jamming of the plate body during impact, and the elastic biasing member provides a pre-tightening force to adjust the explosion venting threshold, so that the explosion-proof plate maintains a preset distance from the segmented unit main body when at rest; 4. Pressure-bearing sealing assembly: including a sealing disc, a locking member (shear pin with a pre-broken slot in the shaft), and an anti-disengagement member, the sealing disc is used to close the release port of the storage unit, the locking member locks the sealing disc in the release port, and the anti-disengagement member restricts the displacement of the sealing disc after opening to prevent it from becoming a projectile after disengaging from the segmented unit; 5. Linkage assembly: including an impact member fixedly connected with the explosion-proof plate, used to impact the locking member to make it break when the explosion-proof plate is displaced due to explosion impact, thereby opening the pressure-bearing sealing assembly.

[0026] After all the components are prefabricated, pre-installation and debugging are completed in the factory to detect the structural precision, sealing performance, and linkage response sensitivity of each component, to ensure the functional integrity of each segmented unit, and to ship the qualified units to the construction site.

[0027] S4. On-site installation of separation and segmentation The on-site installation adopts a "regional and phased" operation mode to avoid mutual interference between different segment constructions and reduce the impact on the daily operation of the hazardous chemical fire station. The specific process is as follows: 1. Site preparation: clean up the construction area, lay out the construction path, install pre-buried steel plates or expansion bolts (for fixing the segment unit main body), and ensure that the installation foundation is flat and firm; 2. Segment unit installation: according to the construction progress plan, hoist the main body of each explosion-proof wall segment unit in turn, fix it to the installation foundation through pre-buried steel plates or expansion bolts, adjust the verticality and horizontality of the segment unit, and ensure that the structural size deviation meets the design requirements; 3. Component connection: through the pre-set standardized interface, complete the mechanical connection between each segment unit (use a sealing structure at the joint to improve the sealing and pressure-bearing properties) and the connection of the interconnected pipe network components (use flange jointing and set sealing gaskets at the joint to ensure that the pipe network is sealed and leak-free); 4. Auxiliary treatment: carry out corrosion and fireproofing treatment on the connection parts of the segment unit and exposed steel structure, install mechanical pressure indicators (connected to the interconnected pipe network for real-time monitoring of pipe network pressure), and reserve operation and maintenance interfaces and emergency access.

[0028] S5. System linkage debugging After all the segment units are installed, start the overall linkage debugging to ensure the coordinated operation of each segment unit and the overall system. The debugging content includes: 1. Pressure debugging: fill the interconnected pipe network components with fire-fighting medium, adjust the pipe network pressure to the pre-set positive pressure value (2-4 times the standard atmospheric pressure) through the central booster station, and monitor the pipe network pressure of each segment unit in real time through the mechanical pressure indicator to ensure stable pressure and no leakage; 2. Linkage response debugging: simulate different regional explosion scenarios to detect the displacement response accuracy of the explosion-proof plate and verify whether the linkage components can quickly break the locking piece and open the pressure-bearing sealing component to form a pressure relief channel when the explosion-proof plate is displaced; 3. Fire-fighting medium scheduling debugging: detect the flow smoothness of the fire-fighting medium in the interconnected pipe network components and verify whether the fire-fighting medium can be collected from the storage units of each segment unit to the explosion relief point under the driving of pressure difference to achieve centralized injection for fire extinguishing; 4. Central control system debugging: debug the linkage logic of the central control system and each segment unit to ensure that the running state of each segment unit can be monitored in real time, the explosion impact trigger signal can be received, and the fire-fighting medium can be dispatched synchronously to achieve graded explosion relief and active fire extinguishing.

[0029] During the debugging process, problems found are rectified in a timely manner until all debugging indicators meet the design requirements.

[0030] S6. Segment acceptance and commissioning The acceptance process adopts a "segmented acceptance, overall review" model, balancing acceptance efficiency with overall protection performance. The specific procedure is as follows: 1. Segmented Acceptance: Each segment unit that has been installed and commissioned is subject to separate acceptance. Acceptance indicators include: structural dimensional deviation of the segment unit, displacement response accuracy of the explosion-proof plate, sealing performance of the pressure-bearing sealing components, pressure loss of the interconnected pipeline network, and spraying efficiency of the fire-fighting medium. After passing the acceptance, it can be temporarily put into local protection without affecting the construction and acceptance of other segments. 2. Overall Review: After all segment units have passed the acceptance inspection, an overall review will be carried out. The review indicators include: the coordination and linkage of each segment unit, the overall explosion-proof and fire-proof performance, the emergency response speed and the stability of the pipeline pressure. After the overall review is passed, the explosion-proof wall facilities can be fully put into use.

[0031] S7. Post-launch segmented maintenance and upgrades To reduce operation and maintenance costs and improve efficiency, a segmented operation and maintenance model is adopted: 1. Routine inspection: Regularly inspect the pressure status of the interconnected pipeline network using mechanical pressure indicators on the outer surface of each section unit, check for faults in explosion-proof plates, pressure-bearing sealing components and linkage components, and promptly handle problems such as leaks and component damage; 2. Fault Repair: If a segment unit malfunctions (such as deformation of the explosion-proof plate or leakage of the pressure-bearing sealing component), the segment unit can be disassembled and repaired or replaced separately. After the repair is completed, it can be tested and accepted separately without stopping the operation of the entire explosion-proof wall facility, thus avoiding the impact of local faults on the overall protection function. 3. Functional Upgrades: If the protective performance of the explosion-proof wall needs to be upgraded or its functions expanded according to changes in the scale and type of hazardous chemical storage, individual or partial segment units can be modified separately without the need for overall dismantling and reconstruction, thereby reducing upgrade costs and shortening the upgrade period.

[0032] In addition, after commissioning, segmented emergency drills are conducted regularly to simulate explosion scenarios in different areas, test the explosion relief effect of each segment unit, the dispatch efficiency of fire-fighting media, and the system linkage response speed. Based on the drill results, the linkage logic of the segment units and the operation and maintenance plan are optimized to continuously improve the protective reliability of the explosion-proof wall facilities.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A method for designing a whole integrated explosion-proof wall facility of a hazardous chemical fire station, which is constructed separately in segments, characterized in that, Comprising the following steps: S1. Overall function planning design: combining the site layout of the hazardous chemical fire station, the types of stored hazardous chemicals and the requirements of explosion-proof and fireproof grade, the overall function positioning of the explosion-proof wall facility, the structure parameter calculation and the system linkage scheme design are completed, the overall protection range of the explosion-proof wall, the explosion venting threshold, the fireproof medium adaptation type and the interconnection linkage logic are clarified, and the overall design scheme is formed; S2. Separation and segmentation design: based on the overall design scheme, according to the site boundary, construction partition, stress partition and later operation and maintenance requirements, the overall explosion-proof wall is divided into multiple independent explosion-proof wall segment units, each segment unit is equipped with complete explosion-proof, fireproof and trigger linkage components, the structure size, connection interface and function division of each segment unit are clarified, and the overall protection performance and system linkage effect are ensured after the segment unit is split; S3. Modular prefabrication production: according to the segmentation design parameters, the main structure, interconnection pipe network component, explosion-proof plate component, pressure-bearing sealing component and linkage component of each explosion-proof wall segment unit are produced respectively by using factory modular prefabrication method, the pre-installation and debugging of each component are completed during the prefabrication process, the structure precision and function integrity of each segment unit are ensured, and the factory detection is carried out after the prefabrication is completed; S4. On-site separation and segmentation installation: according to the construction progress plan, the on-site installation of each explosion-proof wall segment unit is carried out in different areas and stages, the fixed installation of the segment unit main body is completed first, and then the mechanical connection and pipe network communication between the segment units are realized through the preset connection interface, the construction channel and operation and maintenance interface are reserved during the installation process to avoid mutual interference between different segment constructions; S5. System linkage debugging: after the installation of all segment units is completed, the overall linkage debugging is started, the debugging contents include: the impact displacement response accuracy of the explosion-proof plate, the sealing performance of the pressure-bearing sealing component, the pressure stability of the interconnection pipe network component and the flow smoothness of the fire-fighting medium, the linkage logic of each segment unit and the central control system is debugged to ensure that the segment units can respond in stages and the interconnection pipe network can realize the centralized scheduling and accurate injection of fire-fighting medium after explosion impact triggering; S6. Segment acceptance and commissioning: the method of "segment acceptance and overall review" is adopted, each installed and debugged segment unit is accepted separately, and after the acceptance is qualified, it can be temporarily put into local protection use, and after all the segment units are accepted and the overall review is completed, the explosion-proof wall facility is fully commissioned; S7. Later segment operation and maintenance and upgrading: according to the operation state of each segment unit, segment inspection, maintenance and fault diagnosis are carried out, if function upgrading or structure modification is needed, single or part segment units can be individually disassembled and modified, which does not affect the normal operation of other segment units.

2. The method of claim 1, wherein the method is characterized by: In step S1, the overall function planning design further comprises: calculating the shock wave pressure and flame propagation speed when the hazardous chemicals explode, matching the explosion-proof plate material, thickness and elastic biasing member stiffness of the explosion-proof wall segment unit, determining the preset positive pressure value of the interconnection pipe network component and the type of fire-fighting medium, the fire-fighting medium is one or a mixture of more than one of water-based extinguishing agent, fluidized dry powder or inert gas.

3. The method of claim 1, wherein the method further comprises: In step S2, the separation and segmentation splitting needs to meet: a sealing connection structure is arranged at the abutment of adjacent segmented units, the connection structure has pressure bearing and expansion properties, can adapt to construction errors and temperature deformation, and the explosion-proof grade and fireproof performance of the abutment are consistent with those of the main body of the segmented unit; the explosion relief threshold of each segmented unit can be individually set according to the risk level of the hazardous chemical in the area, and graded explosion relief is realized.

4. The method of claim 1, wherein the method further comprises: In step S3, during the modular prefabrication production, the main structure of each explosion-proof wall segmented unit adopts a composite wallboard, which includes inner and outer steel plates and A-level non-combustible fireproof and heat-insulating core material filled therebetween, the fireproof and heat-insulating core material is high-density rock wool, foam concrete or calcium silicate board; the interconnected pipe network assembly includes storage units arranged inside the segmented unit and inter-panel connecting pipelines connecting the storage units, the storage units are provided with release openings sealed by pressure-bearing sealing assemblies.

5. The method of claim 1, wherein the method further comprises: In step S3, the explosion-proof plate assembly is preinstalled on the main body of the segmented unit through the connecting assembly, the connecting assembly includes a guide and an elastic biasing member, the guide is used to guide the linear displacement of the explosion-proof plate, and the elastic biasing member is used to keep the explosion-proof plate at a preset distance from the main body of the segmented unit when it is static, and the stiffness of the elastic biasing member can be adjusted according to the explosion relief threshold requirement; the linkage assembly includes an impact member fixedly connected with the explosion-proof plate, and used to damage the locking member of the pressure-bearing sealing assembly when the explosion-proof plate is displaced.

6. The method of claim 1, wherein the method further comprises: In step S4, during the segmented installation on site, the connection of the interconnected pipe network assembly adopts a flange abutment mode, and a sealing gasket is arranged at the abutment to ensure the sealing of the pipe network; the main body of the segmented unit is installed by using expansion bolts or pre-buried steel plates, and after the installation is completed, the connection parts are treated for corrosion and fireproofing.

7. The method of claim 1, wherein the method further comprises: In step S5, during the system linkage debugging, the preset positive pressure of the interconnected pipe network assembly is 2-4 times the standard atmospheric pressure, the pipe network pressure is monitored in real time by a mechanical pressure indicator to ensure the stability of the pipe network pressure; the response sensitivity of the linkage assembly is debugged to ensure that the explosion-proof plate can quickly displace when it is subjected to an explosion impact of a preset threshold, trigger the pressure-bearing sealing assembly to open, form a pressure relief channel, and guide the collection and flow of the fire-fighting medium.

8. The method of claim 1, wherein the method further comprises: In step S6, the indexes for segmented acceptance include: the structural size deviation of the segmented unit, the displacement response accuracy of the explosion-proof plate, the sealing performance of the pressure-bearing sealing assembly, the pressure loss of the interconnected pipe network, and the injection efficiency of the fire-fighting medium, and the indexes for overall review include: the linkage coordination of each segmented unit, the overall explosion-proof and fireproof performance, and the emergency response speed.

9. The method of claim 1, wherein the method further comprises: In step S7, during the later operation and maintenance, the pressure state of the interconnected pipe network is regularly inspected through the mechanical pressure indicator arranged on the outer surface of the segmented unit; if the explosion-proof plate, the pressure-bearing sealing assembly or the linkage assembly of a segmented unit fails, the segmented unit can be individually disassembled for repair and replacement, and after the repair is completed, individual debugging and acceptance are performed without the need to stop the operation of the overall explosion-proof wall facility.

10. The method of claim 1-9, wherein the method further comprises: It also includes an emergency drill step: periodic segmented emergency drills are carried out after the facility is put into use, explosion scenes in different areas are simulated, the explosion relief effect of each segmented unit, the scheduling efficiency of the fire-fighting medium and the system linkage response speed are tested, and the linkage logic and operation and maintenance scheme of the segmented unit are optimized according to the drill results.

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