CN116105566B - Comprehensive pipe gallery gas cabin explosion suppression method and device based on energy absorbing material - Google Patents
Comprehensive pipe gallery gas cabin explosion suppression method and device based on energy absorbing material Download PDFInfo
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- CN116105566B CN116105566B CN202310361820.2A CN202310361820A CN116105566B CN 116105566 B CN116105566 B CN 116105566B CN 202310361820 A CN202310361820 A CN 202310361820A CN 116105566 B CN116105566 B CN 116105566B
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Abstract
The application provides an explosion suppression method and device for a utility tunnel gas tank based on energy-absorbing materials. The explosion suppression device comprising an energy absorption blocking module and an adherence energy absorption module is arranged in the utility tunnel gas cabin to absorb and block explosion propagation in the utility tunnel gas cabin; the wall-attached energy-absorbing module is longitudinally arranged in the utility tunnel gas cabin, the structural layout of the wall-attached energy-absorbing module in the utility tunnel gas cabin is optimized, the energy-absorbing blocking module is placed at the high-efficiency explosion suppression point according to the explosion suppression effect measurement result, explosion propagation in the utility tunnel is suppressed by absorbing and blocking pressure shock wave energy in the explosion process, destroying the flame structure and absorbing heat, mechanical impact on the pipe tunnel structure is slowed down, explosion suppression effect is improved, and technical support is provided for risk prevention and control of the pipe tunnel.
Description
Technical Field
The application relates to the technical field of pipe rack safety, in particular to an explosion suppression method and device for a comprehensive pipe rack gas cabin based on energy absorbing materials.
Background
With the strong promotion of underground space resource development, the urban underground comprehensive pipe rack is an important foundation for guaranteeing the normal operation of cities. The utility tunnel integrates various life lines of cities, and comprises a plurality of pipelines such as electric power, telecommunication, heating power, fuel gas, water supply and drainage and the like, thereby greatly facilitating the life of urban residents and improving the operation and maintenance efficiency of the cities and simultaneously having huge potential safety hazards.
Among them, the gas pipeline is a node with a large accident risk in the utility tunnel, and in recent years, urban residential buildings, restaurant shops, buried municipal pipelines and the like are places where natural gas explosion accidents occur frequently, so the gas explosion risk cannot be quite small. The independent arrangement of the gas cabin in the comprehensive pipe rack is an important measure for reducing the risk of gas explosion accidents, so that explosion impact and flame disasters can be effectively avoided, and disasters caused by urban lifeline paralysis are avoided.
However, the relatively narrow enclosed space in the gas cabin also increases the severity of explosion disasters, the slender pipe gallery structure and a large number of complicated turbulence sources easily cause the detonation of the gas to be converted into detonation, the gas pipeline is further damaged to release a large amount of gas, and a large amount of gas participates in the explosion process to form a positive feedback mechanism, so that the propagation of the detonation disasters is aggravated.
Thus, there is a need to provide a solution to the above-mentioned deficiencies of the prior art.
Disclosure of Invention
The utility model aims to provide a comprehensive pipe rack gas cabin explosion suppression method and device based on energy absorbing materials, so as to solve or alleviate the problems in the prior art.
In order to achieve the above object, the present application provides the following technical solutions:
the utility model provides an explosion suppression method of a utility tunnel gas cabin based on energy-absorbing materials, wherein an explosion suppression device is arranged in the utility tunnel gas cabin and used for blocking explosion propagation in the utility tunnel gas cabin; the explosion suppression device comprises an energy absorption blocking module and an adherence energy absorption module, wherein the energy absorption blocking module and the adherence energy absorption module both contain the energy absorption material, and the explosion suppression method comprises the following steps: s101, constructing an explosion suppression measurement model of energy absorption materials of the utility tunnel gas tank, performing explosion suppression measurement on different structural layouts of the adherence energy absorption module in the utility tunnel gas tank, and acquiring explosion suppression measurement data of different structural layouts of the adherence energy absorption module in the utility tunnel gas tank; step S102, based on a first evaluation index of the energy absorbing material of the utility tunnel gas cabin, respectively determining explosion suppression effects of the adherence energy absorbing module in different structural layouts of the utility tunnel gas cabin according to the explosion suppression measurement data; step S103, optimizing the structural layout of the adherence energy-absorbing module in the utility tunnel gas cabin according to the explosion suppression effect of the adherence energy-absorbing module in different structural layouts in the utility tunnel gas cabin, and selecting high-efficiency explosion suppression points to place the energy-absorbing blocking module according to corresponding explosion suppression measurement results.
Preferably, the utility tunnel gas cabin energy-absorbing material explosion suppression measurement model includes: the model cabin and the combustible gas filling cabin are arranged between the two sections of the model cabins, and turbulence source barriers are arranged in the model cabin; the energy absorbing materials comprise a first energy absorbing material and a second energy absorbing material; in step S101, paving the wall-attached energy-absorbing module containing the first energy-absorbing material on the inner wall surface of the model cabin, and coating the wall-attached energy-absorbing module containing the second energy-absorbing material on the turbulence source barrier; wherein the density and hardness of the first energy-absorbing material are both greater than those of the second energy-absorbing material.
Preferably, the paving of the wall-attached energy-absorbing module containing the first energy-absorbing material adopts a plurality of plate-shaped structures to splice, two adjacent plate-shaped structures are connected in an embedded mode, a fixing groove is formed in the plate-shaped structure, a fixing rod is embedded in the fixing groove, the fixing rod is connected to the inner wall surface of the model cabin in a fastening mode, and the plate-shaped structure is pressed tightly.
Preferably, the first evaluation index includes: peak overpressure
The moment of reaching the peak of overpressure->
Rate of overpressure rise- >
Overpressure decay time->
Peak temperature->
Temperature jump time->
Maximum temperature duration->
Flame propagation distance->
Flame duration->
The method comprises the steps of carrying out a first treatment on the surface of the In step S102, the following applies:
determining explosion suppression index reduction rates of different structural layouts of the adherence energy absorption module in the utility tunnel gas cabin;
in the method, in the process of the invention,
;/>
is->
Personal index->
Is a decrease rate of explosion suppression index of +.>
For the measurement data without the attachment energy absorber module,/the measurement data>
For the application of the wall-mounted energy absorber module->
Personal index->
Is used for explosion suppression measurement data.
Preferably, in step S103, the optimizing the structural layout of the attaching energy-absorbing module in the utility tunnel gas cabin according to the explosion suppression effect of the attaching energy-absorbing module in the utility tunnel gas cabin in different structural layouts includes: based on a second evaluation index of the energy absorbing material of the utility tunnel gas cabin, calculating explosion suppression values of different structural layouts of the adherence energy absorbing module in the utility tunnel gas cabin according to the explosion suppression index descending rate by an index area method; responding to the fact that the explosion suppression value errors of different structural layouts are larger than preset explosion suppression errors, and arranging the adherence energy absorption module in the utility tunnel gas cabin according to the structural layout corresponding to the largest explosion suppression value; and responding to the explosion suppression value errors of different structural layouts to be smaller than the explosion suppression errors, and arranging the adherence energy absorption module in the utility tunnel gas cabin according to the structural layout corresponding to the smallest second evaluation index based on the second evaluation index of the utility tunnel gas cabin energy absorption material.
Preferably, in step S103, the selecting the energy-absorbing blocking module for placing the high-efficiency explosion suppression point according to the corresponding explosion suppression measurement result specifically includes: and determining the installation position of the energy absorption blocking module according to the propagation distance reaching the maximum explosion overpressure, the propagation distance reaching the highest temperature and the propagation distance reaching the maximum flame propagation speed in the corresponding explosion suppression measurement based on the optimization result of the structural layout of the wall-attached energy absorption module in the utility tunnel gas cabin.
The embodiment of the application also provides a utility tunnel gas cabin explosion suppression device based on energy-absorbing material, include: the energy absorption blocking module and the wall attaching energy absorption module are respectively provided with the energy absorption material, the wall attaching energy absorption module is coated on the inner wall of the utility tunnel gas tank, and the energy absorption blocking module is arranged on the top of the utility tunnel gas tank; the energy absorbing barrier module comprises: the device comprises a driving unit, a connecting unit, a bearing fixing frame and a baffle plate; the driving unit includes: the fixed shaft housing is of a cylindrical structure, is fixedly arranged at the top of the utility tunnel gas tank along the longitudinal direction of the utility tunnel gas tank, and is provided with electromagnetic coils on the inner side wall; the armature is sleeved in the fixed shaft housing and penetrates through the center of the electromagnetic coil, and can stretch and retract along the axial direction; the connection unit includes: the connecting fixing piece, the connecting telescopic piece and the axial limiting piece are connected, one end of the connecting fixing piece is provided with an axial limiting counter bore along the axial direction, the other end of the connecting fixing piece is provided with a rotating limiting clamping groove along the axial direction, and one end provided with the axial limiting counter bore is connected with one end of the fixed shaft housing; the connecting telescopic piece is provided with a rotary limiting buckle, one end of the rotary limiting buckle is inserted into the connecting fixed piece along the axial direction, and after the rotary limiting buckle passes through a first rotary supporting hole in the connecting fixed piece, the rotary limiting buckle stretches into the axial limiting counter bore, the rotary limiting buckle is matched with the rotary limiting clamping groove, and one end of the rotary limiting buckle stretching into the axial limiting counter bore is connected with the axial limiting piece; one end of the supporting fixing frame is connected with the other end of the connecting telescopic rod; the baffle plate is made of energy absorbing materials, one end of the baffle plate is longitudinally rotatably arranged at the top of the utility tunnel gas tank, and the other end of the baffle plate is located on the bearing fixing frame.
Preferably, the driving unit further includes: the first shaft end limiting piece and the second shaft end limiting piece are arranged on the fixed shaft shell in an inserted mode, wherein one end of the first shaft end limiting piece is far away from one end of the connecting unit, a supporting limiting blind hole is formed in the end face of the first shaft end limiting piece, and the supporting limiting blind hole is formed in the end face of the first shaft end limiting piece; the second shaft end limiting piece is of an annular structure and is arranged at the other end of the fixed shaft shell; the inner diameters of the support limiting blind hole and the second shaft end limiting piece are smaller than the diameter of the electromagnetic coil; one end of the armature is positioned in the supporting limiting blind hole, and the other end of the armature is opposite to the axial limiting part after penetrating out of the annular structure of the second axial end limiting part.
Preferably, the connecting fixing piece is axially provided with a second rotation supporting hole coaxial with the first rotation supporting hole, and the bottom surface of the second rotation supporting hole is axially provided with the rotation limiting clamping groove.
Preferably, the method further comprises: a flame light sensor; the method further comprises the steps of: and responding to the flame light sensor to detect explosion in the utility tunnel gas cabin, sending a starting signal to the energy absorption blocking module, and starting the energy absorption blocking module within 0.1 second so as to block the explosion propagation in the utility tunnel gas cabin.
Advantageous effects
In the explosion suppression scheme of the utility tunnel gas cabin based on the energy-absorbing material, the explosion propagation in the utility tunnel gas cabin is absorbed and blocked through the explosion suppression device which is arranged in the utility tunnel gas cabin and comprises the energy-absorbing blocking module and the adherence energy-absorbing module; firstly, constructing an explosion suppression measurement model of energy absorption materials of a utility tunnel gas cabin, performing explosion suppression measurement on different structural layouts of an adherence energy absorption module in the utility tunnel gas cabin, and acquiring explosion suppression measurement data of different structural layouts of the adherence energy absorption module in the utility tunnel gas cabin; then, based on a first evaluation index of the energy absorbing material of the utility tunnel gas cabin, determining explosion suppression effects of the adherence energy absorbing module in different structural layouts of the utility tunnel gas cabin according to explosion suppression measurement data; and finally, optimizing the structural layout of the adherence energy-absorbing module in the utility tunnel gas cabin according to the explosion suppression effect of the adherence energy-absorbing module in different structural layouts in the utility tunnel gas cabin, and selecting high-efficiency explosion suppression points to place the energy-absorbing blocking module according to the corresponding explosion suppression measurement result. Furthermore, according to the arrangement mode after optimizing, the wall-attached energy-absorbing module is adhered to the inside of the pipe gallery to absorb explosion shock waves, so that the mechanical impact on the pipe gallery structure is slowed down, the explosion suppression effect is improved while the safety cost is reduced, and technical support is provided for risk prevention and control of the comprehensive pipe gallery.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. Wherein:
FIG. 1 is a flow diagram of an utility tunnel gas tank explosion suppression method based on energy absorbing materials provided in accordance with some embodiments of the present application;
FIG. 2 is a schematic structural view of an Utility tunnel gas tank energy absorbing material explosion suppression measurement model provided in accordance with some embodiments of the present application;
FIG. 3 is a schematic diagram of a comprehensive evaluation index system for explosion suppression efficiency of a utility tunnel gas tank energy absorbing material provided in accordance with some embodiments of the present application;
FIG. 4 is a graph showing the criteria associated with explosion overpressure and explosion temperature in an explosion suppression effect assessment system provided in accordance with some embodiments of the present application;
FIG. 5 is an illustration of an indicator associated with an explosive flame in an explosion suppression effect evaluation system provided in accordance with some embodiments of the present application;
FIG. 6 is a schematic diagram of an index area method provided in accordance with some embodiments of the present application;
FIG. 7 is a schematic illustration of an installation of an energy absorbing module comprising a first energy absorbing material provided in accordance with some embodiments of the present application;
FIG. 8 is a partial view at A in FIG. 7;
FIG. 9 is a schematic illustration of an arrangement of an energy absorbing barrier module within a utility tunnel gas tank provided in accordance with some embodiments of the present application;
FIG. 10 is a schematic state diagram of an energy absorbing barrier module provided according to some embodiments of the present application;
FIG. 11 is a schematic structural view of an energy absorbing barrier module provided in accordance with some embodiments of the present application;
FIG. 12 is a schematic view of a connection telescoping member provided in accordance with some embodiments of the present application;
FIG. 13 is a schematic structural view of a connection fixture provided in accordance with some embodiments of the present application;
fig. 14 is a cross-sectional view of the attachment fixture of fig. 13.
Reference numerals illustrate:
100. the cabin is filled with combustible gas; 200. a model cabin; 300. an energy absorbing barrier module; 901. a long rod; 902. a short bar;
301. a baffle plate; 302. a supporting and fixing frame; 303. connecting the telescopic piece; 304. connecting a fixing piece; 305. an axial limiting member; 306. a second axial end stop; 307. a fixed shaft housing; 308. an electromagnetic coil; 309. a first shaft end limiter;
313. a first rotation support portion; 323. rotating the limiting buckle; 333. a second rotation support portion; 343. a support connecting part;
314. a second rotation support hole; 324. a rotation limit clamping groove; 334. a first rotation support hole; 344. and (5) axially limiting the counter bore.
Detailed Description
The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. Various examples are provided by way of explanation of the present application and not limitation of the present application. Indeed, it will be apparent to those skilled in the art that modifications and variations can be made in the present application without departing from the scope or spirit of the application. For example, features illustrated or described as part of one embodiment can be used on another embodiment to yield still a further embodiment. Accordingly, it is intended that the present application include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Along with the development of urban underground utility tunnel, the potential safety hazard of utility tunnel can effectively be reduced to proper explosion suppression measure of design in the utility tunnel. At present, the explosion suppression of combustible gas in the utility tunnel is mainly divided into chemical explosion suppression and physical explosion suppression. The chemical explosion inhibitor is disposable, can not realize continuous explosion suppression, and is difficult to avoid secondary explosion. Based on daily operation and maintenance in the utility tunnel and the safety problem of staff, physical explosion suppression is more applicable in the utility tunnel.
The physical explosion suppression measures comprise water mist spraying, energy absorption cavities and porous energy absorption materials. However, water may cause corrosion of ancillary facilities and pipes, which is inconvenient for long-term maintenance of the utility tunnel, and may reduce the service life. The cavity structure (energy absorbing cavity) is inconvenient to open up secondarily in the existing pipe gallery structure, and the stress analysis of the special-shaped pipe gallery structure is not mature enough. Therefore, the porous energy-absorbing material becomes the most economical, safe and convenient explosion suppression measure, can realize continuous explosion suppression and furthest reduces explosion results.
Other explosion suppression facilities (explosion-proof ground, explosion-proof door, water spraying system, ventilation system, monitoring system, explosion venting system and ventilation interlayer explosion-proof treatment) are distributed far in the pipe gallery, and mainly play a role in slowing down the explosion result and delay explosion suppression. The applicant researches that the wall-attached energy-absorbing module containing the energy-absorbing material is laid on the surface of the comprehensive pipe gallery, explosion suppression is carried out by utilizing a physical principle, the environment is protected, the explosion propagation chain can be blocked, explosion suppression is carried out in advance, and explosion disasters are reduced to the greatest extent by attaching the wall-attached energy-absorbing module on the inner wall surface of the comprehensive pipe gallery and additionally arranging the quick homing transverse energy-absorbing device in the middle of the pipe gallery.
Based on the explosion suppression scheme, the applicant provides an explosion suppression scheme of the utility tunnel gas cabin based on energy absorption materials, and the explosion suppression device comprising an energy absorption blocking module and an adherence energy absorption module is arranged in the utility tunnel gas cabin to absorb and block explosion propagation in the utility tunnel gas cabin; the wall-attached energy-absorbing module is longitudinally attached to the inner side of the utility tunnel gas cabin, the structural layout of the wall-attached energy-absorbing module in the utility tunnel gas cabin is optimized, the energy-absorbing blocking module is placed at the high-efficiency explosion-suppressing point according to the explosion-suppressing measurement result, the pressure shock wave energy in the explosion-blocking process is absorbed and blocked, the flame structure is destroyed, the heat is absorbed to inhibit explosion propagation in the utility tunnel, the mechanical impact on the pipe tunnel structure is slowed down, the explosion-suppressing effect is improved, and technical support is provided for risk prevention and control of the pipe tunnel.
As shown in fig. 1, the utility tunnel gas tank explosion suppression method based on the energy absorbing material comprises the following steps:
s101, constructing an explosion suppression measurement model of energy absorption materials of the utility tunnel gas cabin, performing explosion suppression measurement on different structural layouts of the adherence energy absorption module in the utility tunnel gas cabin, and obtaining explosion suppression measurement data of different structural layouts of the adherence energy absorption module in the utility tunnel gas cabin.
In this application, establish utility tunnel gas chamber 1:1's explosion suppression measurement model, specific explosion suppression measurement model includes: the model cabin 200 and the combustible gas charging cabin 100 are as shown in fig. 2, the combustible gas charging cabin 100 is positioned between two sections of the model cabins 200, the combustible gas charging cabin 100 is positioned in the middle area of the model cabin 200, the length is 2m, two sides of the combustible gas charging cabin are separated by a polyethylene plastic film to form a closed combustible gas detonation zone, and a methane concentration monitor matrix is arranged in the detonation zone to ensure that the methane concentration is uniformly distributed in the detonation zone.
And (3) filling the combustible gas into the cabin 100 through a gas distribution unit (a gas cylinder), an electromagnetic valve, an electric ignition module and the like in the explosion suppression measurement model, wherein the combustible gas is methane-air premixed gas with the alkane concentration of 10%, starting the combustible gas to be filled into an ignition device in the cabin 100, and monitoring measurement data of overpressure, temperature and flame along with propagation distance of a detonation zone of the cabin 100 by the combustible gas, wherein various parameter monitoring sensors are equidistantly arranged from an initiating cabin (the combustible gas is filled into the cabin 100) to two sides at intervals of 1 m.
The flammable gas explosion of the utility tunnel gas cabin is simulated by controlling the flammable gas to be filled into the cabin 100 to explode, the flammable gas is filled into the cabin 100 and is arranged between the two sections of model measurement cabins, and when the flammable gas explosion occurs in the utility tunnel gas cabin, the explosion impact along the extending direction of the utility tunnel gas cabin is effectively simulated.
The cabin body of the model cabin 200 is of a steel structure, an adherence energy absorbing module is paved on the inner wall surface of the model cabin 200, a plurality of pressure, flame and temperature sensors are arranged, combustible gas is filled into the cabin 100 through the adherence energy absorbing module, explosion energy after explosion is absorbed, and measurement data in the explosion process are acquired by the pressure, flame and temperature sensors, so that explosion suppression measurement data of the adherence energy absorbing module are acquired.
The cabin body of the model cabin 200 adopts a steel structure, so that the anti-explosion performance is stronger; meanwhile, other auxiliary facilities such as gas pipelines, stone piers, electric boxes, pipelines, monitors, fire-fighting devices and the like exist in the utility tunnel gas cabin, and compared with the cabin body of the model cabin 200, the auxiliary facilities have poorer antiknock performance, become a turbulent flow source of explosion when explosion occurs, and simulate the auxiliary facilities in the utility tunnel gas cabin by using the barriers of the turbulent flow source distributed in the model cabin 200, thereby improving the measurement accuracy of the explosion suppression measurement model.
In this application, the energy absorbing materials are divided into a first energy absorbing material (rigid energy absorbing material such as foamed metal, foamed ceramic, etc.) and a second energy absorbing material (flexible energy absorbing material such as wire mesh, flexible wall, etc.). The density and hardness of the hard energy-absorbing material are both larger than those of the soft energy-absorbing material, so that the hard energy-absorbing material is not easy to deform and collapse when being subjected to explosion impact, and the hard energy-absorbing material can be attached to the mounting wall surface for a long time. The hard energy absorbing material adopted in the application is iron-nickel alloy foam metal, and the tensile strength is 8 to 50 megapascals; the soft energy absorbing material adopts a metal fiber net, and the tensile strength of the soft energy absorbing material is 6.6 to 13.1 megapascals.
When an explosion occurs in the utility tunnel, the maximum load bearing surface of the tunnel structure is the inner wall surface of the gas cabin, and thus, an adhesion energy absorbing module (e.g., a hard energy absorbing plate) containing a hard energy absorbing material is laid on the inner wall surface of the model cabin 200. In this application, as shown in fig. 7, 8, the laying of the adherence energy-absorbing module of the hard energy-absorbing material adopts the platy structure to splice, inlays between two adjacent platy structures and connects, specifically, leaves respectively on two platy structures of concatenation and establishes the dovetail structure, inlays two adjacent platy structures through the dovetail structure and connects, effectively improves the partition migration of adherence energy-absorbing module in utility tunnel inside, installation etc. simultaneously, the mosaic structure can effectively avoid basic settings such as electronic box, pipeline, watch-dog in the pipe tunnel. In the laying process, the wall-attached energy-absorbing modules form different structural layout modes according to the changes of parameters such as different intervals, different sizes and the like.
After two adjacent plate-shaped structures are inlaid through the dovetail groove structure, a fixing groove is further formed in the plate-shaped structures, a fixing rod is embedded into the fixing groove, the fixing rod is fixedly connected to the inner wall surface of the cabin body through a fastener, the plate-shaped structures are tightly pressed through the fixing rod, and the firmness of adhesion of the plate-shaped structures to the inner wall surface is further improved. Wherein, the size of single platy structure is 50cm by 50cm, and the fastener includes a stock 901 and a quarter butt 902, and the one end of quarter butt 902 is located long ampere's middle part, constitutes the T structure to connect through the bolt, the length of stock 901 is 20cm, and the length of quarter butt 902 is 10cm, thickness is 3mm. The depth of the fixing groove on the rod-shaped structure is 3mm.
For turbulent flow source barriers in a comprehensive pipe rack gas cabin, such as gas pipelines, cables, stone piers, fire-fighting equipment, electric boxes and the like, the shape and the structure are different, and an adherence energy-absorbing module made of a hard energy-absorbing material cannot be coated and molded according to the shape and the structure, in the application, the adherence energy-absorbing module made of a soft energy-absorbing material (such as a soft metal net) is used for model prefabrication, and is coated on the turbulent flow source barriers to form a three-dimensional wire mesh-shaped structure integrated with 'loading-unloading', and the structure is fixed through hanging buckles, so that the explosion suppression capability is ensured, and meanwhile, the operation, maintenance and inspection are also facilitated.
The gas pipeline, the cable, the stone pier, the fire-fighting equipment, the electric box and the like serve as turbulent flow sources after explosion occurs, and two opposite action mechanisms of inhibiting and exciting the propagation of the explosion exist. When the turbulence source barrier plays a role in excitation, the explosion power can be increased, and the excitation effect of the turbulence source barrier can be reduced and the explosion suppression speed can be accelerated by coating the soft energy absorption material on the turbulence source barrier. When the turbulence source barrier plays a role in inhibiting, the adhesion energy-absorbing module of the soft energy-absorbing material is coated on the turbulence source barrier, so that the impact force of explosion can be further absorbed, flame is destroyed (extinguished), the temperature is reduced, and the excitation effect of the turbulence source on explosion propagation is reduced; the cable and the electric box are protected from being damaged, and fire disaster is avoided; the fire-fighting equipment is protected from being damaged, and the situation that fire is caused and cannot be extinguished quickly after spreading to other corridor cabins is avoided; the stone pier and the gas pipeline are protected from being damaged, more dangerous explosion disasters caused by leakage of a large amount of gas are avoided, the turbulence source obstacle is protected, and the damage degree to the turbulence source obstacle is reduced.
Step S102, based on first evaluation indexes of energy absorbing materials of the utility tunnel gas cabin, respectively determining explosion suppression effects of the adherence energy absorbing modules in different structural layouts of the utility tunnel gas cabin according to explosion suppression measurement data.
As shown in fig. 3 to 5, the comprehensive evaluation index system for the explosion suppression efficiency of the energy absorbing material of the utility tunnel gas tank comprises an explosion suppression effect evaluation system (a first evaluation system) and a safety cost evaluation system (a second evaluation system). The explosion suppression effect of the comprehensive pipe rack gas tank energy-absorbing material is evaluated from three types of explosion overpressure, explosion temperature and explosion flame after explosion occurs, and an explosion suppression effect evaluation system of the comprehensive pipe rack gas tank energy-absorbing material is established. Wherein, the evaluation index of explosion overpressure type includes: peak overpressure
The moment of reaching the peak of overpressure->
Rate of overpressure rise->
And overpressure decay time->
The method comprises the steps of carrying out a first treatment on the surface of the The evaluation index of the explosion temperature type includes: temperature peak->
Temperature jump time->
Maximum temperature duration->
The method comprises the steps of carrying out a first treatment on the surface of the The evaluation index of the explosion flame type comprises flame propagation distance +.>
Flame duration->
。
In the application, the damage mechanism of natural gas explosion to rigid structures such as a utility tunnel gas cabin structure, a stone pier, a gas pipeline and the like is shear stress damage caused by explosion overpressure, and the inhibition effect of the adherence energy absorption module on explosion damage in the utility tunnel is described by the index change rate (namely explosion inhibition index decrease rate) of the overpressure type; the electric box, the cable, the fire-fighting equipment and the like can be ignited under the action of high-temperature flame, so that serious secondary fire disasters are caused, and the inhibiting effect of the adherence energy-absorbing module on explosion damage in the pipeline corridor is described through the index change rate (namely the explosion inhibition index decline rate) of explosion high-temperature explosion flame types.
In the present application, the same evaluation index
Has independent measurement data under different structural layout modes, and can absorb energy through adherenceMeasurement data analysis of different structural layouts of the blocks, resulting in an evaluation index +.>
Index change rate of (2); and different evaluation index->
The index change rate (i.e., the explosion suppression index decline rate) of (a) is different. Specifically, the method comprises the following steps:
and determining the explosion suppression index reduction rate of the adherence energy absorption module in different structural layouts in the utility tunnel gas cabin. In the method, in the process of the invention,
;/>
is->
Personal index->
Is a decrease rate of explosion suppression index of +.>
For measurement data without an adhesive energy absorption module, < >>
For laying the wall-attached energy-absorbing module->
Personal index->
Is used for explosion suppression measurement data.
Step S103, optimizing the structural layout of the adherence energy-absorbing module in the utility tunnel gas cabin according to the explosion suppression effect of the adherence energy-absorbing module in different structural layouts in the utility tunnel gas cabin, and selecting high-efficiency explosion suppression points to place the energy-absorbing barrier module according to the corresponding explosion suppression measurement results.
When explosion occurs, the explosion suppression effects of the different structural layout modes of the wall-attached energy-absorbing module are different, and the explosion suppression effects of the different structural layout modes of the wall-attached energy-absorbing module can be described by calculating the explosion suppression index reduction rate. Then, consumable area of the bonded adhesion energy absorption module 
The structural layout of the wall-attached energy-absorbing module is considered. Specifically, based on the safety cost (second evaluation index) of the energy absorbing material of the utility tunnel gas cabin, according to the explosion suppression index reduction rate, the explosion suppression efficiency (explosion suppression value) of the adherence energy absorbing module in different structural layouts of the utility tunnel gas cabin is calculated through an index area method, namely, the explosion suppression index reduction rate per structural layout of the adherence energy absorbing module is calculated>
The area of the graph in the unit area is the explosion suppression efficiency of the adherence energy absorption module under the structural layout. And further, the structural layout of the adherence energy-absorbing module is optimized through explosion suppression efficiency analysis. As shown in FIG. 6, S j Reducing the explosion suppression index reduction rate of each energy absorbing material under the j-th structural layout>
Connecting lines in a graph in unit area, and calculating the explosion suppression index reduction rate>
The enclosed pattern area is 0.3103, namely the explosion suppression efficiency of the energy absorbing material under the j-th structural layout is considered to be 31.03%.
For different structural layouts of the adherence energy absorption module, single evaluation indexes are evaluated through an index area method
Processing to obtain the corresponding explosion suppression efficiency, if the fabrics with different structuresAnd if the explosion suppression efficiency error is larger than the preset explosion suppression error in the local mode, arranging an adherence energy absorption module in the utility tunnel gas cabin according to the structural layout corresponding to the maximum explosion suppression value. Namely, when the error between the explosion suppression efficiency of the two layout modes is larger than the preset explosion suppression error (5%), selecting the layout mode corresponding to the maximum explosion suppression efficiency to arrange an adherence energy absorption module in the utility tunnel gas cabin;
If the explosion suppression value corresponding to the first structural layout and the explosion suppression value corresponding to other structural layouts have errors larger than the preset explosion suppression error, and the explosion suppression value corresponding to other structural layouts has errors smaller than or equal to the explosion suppression error, the first structural layout is selected to be arranged in the utility tunnel gas cabin to enable the wall-attached energy absorption module. The first structural layout is not particularly limited, and may be any of various structural layouts.
If the error of explosion suppression efficiency of part of different structural layouts is smaller than or equal to a preset explosion suppression error, based on a safety cost evaluation system (second evaluation index) of the comprehensive pipe rack gas cabin energy absorption material, selecting the structural layout corresponding to the minimum safety cost from the structural layouts corresponding to the explosion suppression error, and arranging an adherence energy absorption module in the comprehensive pipe rack gas cabin. Namely, if the explosion suppression efficiency error of part of the structural layout is smaller than or equal to the preset explosion suppression error, calculating the corresponding safety cost of the structural layout, and selecting the structural layout with the minimum safety cost from the structural layout to arrange the wall-attached energy-absorbing module.
After the optimized layout of the energy-absorbing materials in the utility tunnel gas cabin is determined, explosion suppression in the utility tunnel gas cabin is further enhanced through an explosion suppression device arranged in the utility tunnel gas cabin, wherein the explosion suppression device comprises an energy-absorbing blocking module 300 arranged in the utility tunnel gas cabin, the energy-absorbing materials are arranged on the energy-absorbing blocking module 300, and explosion propagation in the utility tunnel gas cabin is blocked through the energy-absorbing blocking module 300. Specifically, based on the optimization result of the structural layout of the adherence energy-absorbing module in the utility tunnel gas cabin, according to the propagation distance L from the explosion center to the maximum explosion overpressure in the corresponding explosion suppression measurement 1 The transmission reaching the highest temperatureDistance of broadcasting L 2 Distance of propagation L to maximum flame propagation speed 3 The risk point (explosion suppression distance K) is determined, and as shown in fig. 9, an energy absorbing blocking module 300 is installed at the risk point. I.e. select L 1 、L 2 、L 3 The energy absorbing barrier module 300 is installed as the maximum risk point to minimize the impact of explosion.
In the utility tunnel gas cabin explosion suppression device based on energy-absorbing material that this application provided, all be equipped with energy-absorbing material in energy-absorbing separation module 300 and the adherence energy-absorbing module, the inner wall of utility tunnel gas cabin is laid to the adherence energy-absorbing module, and energy-absorbing separation module 300 installs in the top of utility tunnel gas cabin. Specifically, as shown in fig. 10 to 14, the energy absorbing barrier module 300 of the present application includes: the driving unit, the connecting unit, the bearing fixing frame 302 and the baffle plate 301 are rotatably arranged at the top of the pipe gallery, and the bearing fixing frame 302 carries the baffle plate 301, so that the baffle plate 301 is attached to the top of the pipe gallery; after the limit of the supporting fixing frame 302 is relieved by utilizing electromagnetic power to drive the connecting unit, the supporting fixing frame 302 rotates from a horizontal state to a vertical state under the action of self gravity and is separated from contact with the baffle plate 301, the baffle plate 301 rotates downwards around a rotating shaft thereof under the action of self gravity and is converted from the horizontal state to the vertical state, the cross section of the pipe gallery is sealed, and the effect of blocking explosion and reporting is achieved. For ease of description, the tube lane length direction is defined as transverse and the tube lane width direction as longitudinal.
Specifically, the driving unit includes: a fixed shaft housing 307, an armature, a solenoid, a first shaft end stop 309 and a second shaft end stop 306. Wherein, the fixed axle housing 307 is of a cylindrical structure and is longitudinally fixed along the pipe gallery through a connecting lug plate at the top of the utility tunnel gas tank; an electromagnetic coil 308 is arranged on the inner side wall of the cylindrical structure of the fixed shaft housing 307; the armature is inserted from one end of the fixed shaft housing 307, passes through the electromagnetic coil 308, and then passes out from the other end of the fixed shaft housing 307.
The first shaft end limiting piece 309 and the second shaft end limiting piece 306 are respectively installed at two ends of the cylindrical structure of the fixed shaft housing 307, wherein the first shaft end limiting piece 309 is of a plate-shaped structure, a first connecting boss is axially arranged on the surface of the plate-shaped structure, and an external thread is arranged on the outer side wall of the first connecting boss and is in threaded connection with one end of the cylindrical structure of the fixed shaft housing 307; the end face of the first connecting boss is provided with a supporting limit blind hole along the axial direction, the supporting limit blind hole is a blind hole, the diameter of the supporting limit blind hole is matched with the size of the armature, and the diameter of the supporting limit blind hole is smaller than that of the electromagnetic coil 308.
The second shaft end limiting member 306 is of an annular structure, an external thread is arranged on the outer side wall of the second shaft end limiting member and is in threaded connection with the other end of the cylindrical structure of the fixed shaft housing 307, the end face of the second shaft end limiting member is flush with the end face of the fixed shaft housing 307, and the inner diameter of the annular structure is matched with the size of the armature and is smaller than the diameter of the electromagnetic coil 308. After the first shaft end limiter 309 and the second shaft end limiter 306 are in threaded connection with the fixed shaft housing 307, the opposite end surfaces of the first shaft end limiter 309 and the second shaft end limiter 306 respectively abut against the electromagnetic coil 308 to axially limit the electromagnetic coil 308, wherein the first shaft end limiter 309 and the second shaft end limiter 306 are made of insulating materials.
One end of the armature is positioned in the supporting and limiting blind hole, the other end of the armature is opposite to the axial limiting piece 305 after penetrating out of the annular structure of the second axial limiting piece 306, and the two ends of the armature are supported by the supporting and limiting blind hole and the second axial limiting piece 306. When the electromagnetic coil 308 is not energized, the armature is stationary in the fixed shaft housing 307, and when the electromagnetic coil 308 is energized, the armature is subjected to an electromagnetic field to perform telescopic movement in the axial direction.
The connection unit is connected to the driving unit, specifically, one end of the fixed shaft housing 307, on which the second shaft end limiter 306 is mounted, is connected to the connection fixing member 304 in the connection unit. A second connection boss is arranged at one end of the connection fixing piece 304, a stepped groove is arranged at the end part of the fixed shaft housing 307, the outer side wall of the second connection boss is in threaded connection with the inner side wall of the stepped groove, and the end face of the connection fixing piece 304 is abutted with the end face of the second shaft end limiting piece 306; thereby connecting the connection fixture 304 with the fixed shaft housing 307.
An axial limiting counter bore 344 is axially arranged on the end face of the second connecting boss; wherein the radial dimension of the axial stop counterbore 344 is smaller than the inner diameter of the fixed shaft housing 307 and larger than the diameter of the armature, and the armature extends into the axial stop counterbore 344 through one end of the second shaft end stop 306.
The other end of the connecting fixing piece 304 is provided with a first rotating support hole 334 and a second rotating support hole 314 which are coaxial along the axial direction, wherein the first rotating support hole 334 is communicated with the second rotating support hole 314 and an axial limiting counter bore 344. A rotation limiting slot 324 is axially formed in the bottom surface of the second rotation supporting hole 314.
The connection expansion piece 303 of the connection unit is in a stepped shaft shape, and includes: a first rotation support portion 313, a second rotation support portion 333. The rotation limiting buckle 323 is provided on an end surface of the second rotation support portion 333 that contacts the first rotation support portion 313, toward the first rotation support portion 313. After the connecting telescopic piece 303 is inserted into the connecting fixing piece 304 from one end of the first rotating support hole 334 along the axial direction, the second rotating support part 333 passes through the second rotating support hole 314 and is opposite to the end part of the armature inserted into the axial limiting counter bore 344; the rotation limiting buckle 323 is inserted into the rotation limiting clamping groove 324, and the first rotation supporting portion 313 is fitted with the first rotation supporting hole 334, thereby fixing the connection expansion member 303 and the connection fixing member 304 as one body in the circumferential direction.
An axial limiting piece 305 is further connected to the end of the second rotation supporting portion 333 of the connecting telescopic piece 303 in a threaded manner, that is, the axial limiting piece 305 is located between the end of the second rotation supporting portion 333 and the end of the armature, and the radial dimension of the axial limiting piece 305 is matched with the radial dimension of the axial limiting counter bore 344. Thereby, the axial displacement stroke of the connection expansion member 303 is restricted by the axial stopper 305.
The end surface of the second rotation supporting part 333 of the connection telescopic member 303 is axially provided with a bearing connecting part 343, and the bearing connecting part 343 is in threaded connection with one end of the bearing fixing frame 302 of the connection unit, so that the bearing fixing frame 302 can move along with the connection telescopic member 303 in the axial direction. Along the length direction of bearing mount 302, be equipped with a plurality of equipartitions's bearing tooth, a plurality of bearing teeth are the broach form and distribute, and the bearing tooth is along longitudinal extension, meets with the lower surface of baffle 301, and the stroke makes the baffle 301 laminating at the piping lane top to the support of baffle 301.
The baffle 301 is made of energy absorbing material, one end of the baffle is longitudinally and rotatably arranged at the top of the utility tunnel gas tank, and the other end of the baffle is seated on the supporting teeth of the supporting and fixing frame 302. When the flame light sensor in the explosion suppression device detects explosion in the utility tunnel gas tank, a starting signal is sent to the energy absorption blocking module 300, the energy absorption blocking module 300 is started within 0.1 second, the blocking plate 301 rotates, and explosion propagation in the utility tunnel gas tank is blocked by the energy absorption material of the soft metal net structure distributed on the blocking plate. Specifically, after the electromagnetic coil 308 is electrified, the armature stretches out along the axial direction, the top moves the connecting telescopic piece 303, so that after the rotating limit buckle 323 is separated from the rotating limit clamping groove 324, the supporting fixing frame 302 rotates together with the connecting telescopic piece 303 under the action of gravity, the supporting fixing frame 302 is gradually separated from contact with the baffle plate 301, the baffle plate 301 is gradually changed into a vertical state from a horizontal state under the action of gravity, a rotating angle locating plate is arranged at the rotating shaft of the baffle plate 301 and extends along the height direction, and the rotating overrun of the baffle plate 301 is effectively avoided, so that the best blocking effect of the utility tunnel gas tank along the length direction is achieved.
In this application, the armature and the connecting telescopic member 303 move along the axial direction in a telescopic manner, wherein the depth of the supporting and limiting blind hole of the first shaft end limiting member 309 and the depth of the second rotating and supporting hole 314 are both greater than the axial moving stroke of the axial limiting member 305, and the axial limiting stroke of the axial limiting member 305 is greater than the depth of the rotating and limiting clamping groove 324.
In addition, a set of drive units, connecting units and a bearing fixing frame 302 are respectively arranged along the longitudinal center surface of the baffle plate 301. The driving units, the connecting units and the supporting fixing frames 302 on the two sides are symmetrically arranged, wherein the current directions of the electromagnetic coils 308 in the driving units on the two sides in the working state are opposite, and the corresponding armatures are respectively driven to move towards opposite directions.
According to the comprehensive pipe rack gas tank explosion suppression technology based on the energy absorption material, an comprehensive pipe rack gas tank energy absorption material explosion suppression measurement model is built, explosion suppression measurement data of the adherence energy absorption module in different structural layout modes are obtained, propagation rules of flames, overpressure and temperature are determined through scientific analysis, the layout mode of the adherence energy absorption module on a comprehensive pipe rack wall body is determined, scientific basis is provided for efficient optimization of energy absorption material arrangement, layout of the adherence energy absorption module is optimized, and explosion suppression effect is optimized; meanwhile, the risk point location under the optimal layout of the adherence energy-absorbing modules is determined, and the energy-absorbing blocking module 300 is installed, so that the energy-absorbing material can achieve better explosion suppression effect in the comprehensive pipe rack, and the safety guarantee is further improved.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (10)
1. The utility tunnel gas cabin explosion suppression method based on the energy absorption material is characterized in that an explosion suppression device is arranged in the utility tunnel gas cabin and is used for absorbing and blocking explosion propagation in the utility tunnel gas cabin; the explosion suppression device comprises an energy absorption blocking module and an adherence energy absorption module, wherein the energy absorption blocking module and the adherence energy absorption module are respectively provided with the energy absorption material, the adherence energy absorption module is laid on the inner wall of the utility tunnel gas tank, and the energy absorption blocking module is arranged on the top of the utility tunnel gas tank;
the energy absorbing barrier module comprises: the device comprises a driving unit, a connecting unit, a bearing fixing frame and a baffle plate;
the driving unit includes: the electromagnetic coil is distributed on the inner side wall of the fixed shaft shell; the armature is sleeved in the fixed shaft housing and penetrates through the center of the electromagnetic coil, and can stretch and retract along the axial direction;
The connection unit includes: the connecting fixing piece, the connecting telescopic piece and the axial limiting piece are connected, one end of the connecting fixing piece is provided with an axial limiting counter bore along the axial direction, the other end of the connecting fixing piece is provided with a rotating limiting clamping groove along the axial direction, and one end provided with the axial limiting counter bore is connected with one end of the fixed shaft housing;
the connecting telescopic piece is provided with a rotary limiting buckle, one end of the rotary limiting buckle is inserted into the connecting fixed piece along the axial direction, and after the rotary limiting buckle passes through a first rotary supporting hole in the connecting fixed piece, the rotary limiting buckle stretches into the axial limiting counter bore, the rotary limiting buckle is matched with the rotary limiting clamping groove, and one end of the rotary limiting buckle stretching into the axial limiting counter bore is connected with the axial limiting piece;
one end of the bearing fixing frame is connected with the other end of the connecting telescopic piece;
the baffle plate is made of the energy absorbing material, one end of the baffle plate is longitudinally and rotatably arranged at the top of the comprehensive pipe rack gas tank, and the other end of the baffle plate is located on the bearing fixing frame;
the explosion suppression method comprises the following steps:
s101, constructing an explosion suppression measurement model of energy absorption materials of the utility tunnel gas tank, performing explosion suppression measurement on different structural layouts of the adherence energy absorption module in the utility tunnel gas tank, and acquiring explosion suppression measurement data of different structural layouts of the adherence energy absorption module in the utility tunnel gas tank;
Step S102, based on a first evaluation index of the energy absorbing material of the utility tunnel gas cabin, respectively determining explosion suppression effects of the adherence energy absorbing module in different structural layouts of the utility tunnel gas cabin according to the explosion suppression measurement data;
step S103, optimizing the structural layout of the adherence energy-absorbing module in the utility tunnel gas cabin according to the explosion suppression effect of the adherence energy-absorbing module in different structural layouts in the utility tunnel gas cabin, and selecting high-efficiency explosion suppression points to place the energy-absorbing blocking module according to corresponding explosion suppression measurement results.
2. The utility tunnel gas tank explosion suppression method based on energy-absorbing materials according to claim 1, wherein the utility tunnel gas tank energy-absorbing material explosion suppression measurement model comprises: the model cabin and the combustible gas filling cabin are arranged between the two sections of the model cabins, and turbulence source barriers are arranged in the model cabin; the energy absorbing materials comprise a first energy absorbing material and a second energy absorbing material;
in the step S101 of the process of the present invention,
paving the adherence energy-absorbing module containing the first energy-absorbing material on the inner wall surface of the model cabin, and coating the adherence energy-absorbing module containing the second energy-absorbing material on the turbulence source barrier; wherein the density and hardness of the first energy-absorbing material are both greater than those of the second energy-absorbing material.
3. The utility tunnel gas tank explosion suppression method based on the energy absorbing material according to claim 2, wherein,
the laying of the wall-attached energy-absorbing module containing the first energy-absorbing material adopts a plurality of plate-shaped structures to splice, two adjacent plate-shaped structures are connected in an embedded mode, a fixing groove is formed in each plate-shaped structure, a fixing rod is embedded in each fixing groove, the fixing rod is connected to the inner wall surface of the model cabin in a fastening mode, and the plate-shaped structures are pressed tightly.
4. The energy absorbing material-based utility tunnel gas tank explosion suppression method of claim 1, wherein the first evaluation index comprises: peak overpressure
The moment of reaching the peak of overpressure->
Rate of overpressure rise->
Time of decay of overpressure
Peak temperature->
Temperature jump time->
Maximum temperature duration->
Flame propagation distance->
Duration of flame
；
In step S102, the following applies:
determining explosion suppression index reduction rates of different structural layouts of the adherence energy absorption module in the utility tunnel gas cabin;
in the method, in the process of the invention,
;/>
is->
Explosion suppression index reduction rate of individual indexes, < ->
For the measurement data without the attachment energy absorber module,/the measurement data >
For the application of the wall-mounted energy absorber module->
Personal index->
Is used for explosion suppression measurement data.
5. The method for explosion suppression of utility tunnel gas tank based on energy-absorbing material according to claim 1, wherein in step S103, the optimizing the structural layout of the wall-attached energy-absorbing module in the utility tunnel gas tank according to the explosion suppression effect of the different structural layouts of the wall-attached energy-absorbing module in the utility tunnel gas tank includes:
based on a second evaluation index of the energy absorbing material of the utility tunnel gas cabin, calculating explosion suppression values of different structural layouts of the adherence energy absorbing module in the utility tunnel gas cabin according to the explosion suppression index descending rate by an index area method;
responding to the fact that the explosion suppression value errors of different structural layouts are larger than preset explosion suppression errors, and arranging the adherence energy absorption module in the utility tunnel gas cabin according to the structural layout corresponding to the largest explosion suppression value;
and responding to the explosion suppression value errors of part of different structural layouts to be smaller than or equal to the explosion suppression errors, and based on a second evaluation index of the comprehensive pipe rack gas tank energy absorption material, selecting the structural layout corresponding to the minimum second evaluation index from the structural layouts corresponding to the explosion suppression errors, wherein the structural layout corresponding to the minimum second evaluation index is arranged in the comprehensive pipe rack gas tank.
6. The utility tunnel gas tank explosion suppression method based on energy absorbing materials according to claim 1, wherein,
in step S103, the selecting the energy-absorbing blocking module for placing the high-efficiency explosion suppression point according to the corresponding explosion suppression measurement result specifically includes: and determining the installation position of the energy absorption blocking module according to the propagation distance reaching the maximum explosion overpressure, the propagation distance reaching the highest temperature and the propagation distance reaching the maximum flame propagation speed in the corresponding explosion suppression measurement based on the optimization result of the structural layout of the wall-attached energy absorption module in the utility tunnel gas cabin.
7. Utility tunnel gas cabin explosion suppression device based on energy-absorbing material, its characterized in that includes: the energy absorption blocking module and the wall attaching energy absorption module are respectively provided with the energy absorption material, the wall attaching energy absorption module is coated on the inner wall of the utility tunnel gas tank, and the energy absorption blocking module is arranged on the top of the utility tunnel gas tank;
the energy absorbing barrier module comprises: the device comprises a driving unit, a connecting unit, a bearing fixing frame and a baffle plate;
the driving unit includes: the electromagnetic coil is distributed on the inner side wall of the fixed shaft shell; the armature is sleeved in the fixed shaft housing and penetrates through the center of the electromagnetic coil, and can stretch and retract along the axial direction;
The connection unit includes: the connecting fixing piece, the connecting telescopic piece and the axial limiting piece are connected, one end of the connecting fixing piece is provided with an axial limiting counter bore along the axial direction, the other end of the connecting fixing piece is provided with a rotating limiting clamping groove along the axial direction, and one end provided with the axial limiting counter bore is connected with one end of the fixed shaft housing;
the connecting telescopic piece is provided with a rotary limiting buckle, one end of the rotary limiting buckle is inserted into the connecting fixed piece along the axial direction, and after the rotary limiting buckle passes through a first rotary supporting hole in the connecting fixed piece, the rotary limiting buckle stretches into the axial limiting counter bore, the rotary limiting buckle is matched with the rotary limiting clamping groove, and one end of the rotary limiting buckle stretching into the axial limiting counter bore is connected with the axial limiting piece;
one end of the bearing fixing frame is connected with the other end of the connecting telescopic piece;
the baffle plate is made of energy absorbing materials, one end of the baffle plate is longitudinally rotatably arranged at the top of the utility tunnel gas tank, and the other end of the baffle plate is located on the bearing fixing frame.
8. The energy absorbing material based utility tunnel gas tank explosion suppression apparatus of claim 7, wherein the drive unit further comprises: the first shaft end limiting piece and the second shaft end limiting piece are arranged on the fixed shaft shell in an inserted mode, wherein one end of the first shaft end limiting piece is far away from one end of the connecting unit, and a supporting limiting blind hole is formed in the end face of the first shaft end limiting piece; the second shaft end limiting piece is of an annular structure and is arranged at the other end of the fixed shaft shell; the inner diameters of the support limiting blind hole and the second shaft end limiting piece are smaller than the diameter of the electromagnetic coil;
One end of the armature is positioned in the supporting limiting blind hole, and the other end of the armature is opposite to the axial limiting part after penetrating out of the annular structure of the second axial end limiting part.
9. The utility tunnel gas tank explosion suppression device based on energy-absorbing materials according to claim 7, wherein a second rotating support hole coaxial with the first rotating support hole is axially arranged on the connecting fixing piece, and the bottom surface of the second rotating support hole is axially provided with the rotating limiting clamping groove.
10. The energy absorbing material based utility tunnel gas tank explosion suppression apparatus of claim 7, further comprising: a flame light sensor;
and responding to the flame light sensor to detect explosion in the utility tunnel gas cabin, sending a starting signal to the energy absorption blocking module, and starting the energy absorption blocking module within 0.1 second so as to block the explosion propagation in the utility tunnel gas cabin.
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101254331A (en) * | 2007-12-27 | 2008-09-03 | 兰州理工大学 | Long damp cylinder driving fire prevention isolated system |
| CN103790622A (en) * | 2014-01-21 | 2014-05-14 | 中国矿业大学 | Method for active explosion proofing and explosion suppression through high-pressure inert gas |
| CN106362326A (en) * | 2016-10-18 | 2017-02-01 | 上海市政工程设计研究总院（集团）有限公司 | Fire prevention system for cable tunnel and underground comprehensive pipe gallery cable tank |
| EP3199207A2 (en) * | 2016-01-28 | 2017-08-02 | Peter Reitinger | Pressure relief device, modular pressure relief unit and fire protection device |
| CN108193707A (en) * | 2017-12-22 | 2018-06-22 | 成都市市政工程设计研究院 | A kind of comprehensive pipe gallery structure |
| CN109243279A (en) * | 2018-09-05 | 2019-01-18 | 中国矿业大学 | A kind of underground pipe gallery electric power cabin fire test device |
| CN109373199A (en) * | 2018-10-29 | 2019-02-22 | 上海市政工程设计研究总院（集团）有限公司 | A kind of pipe gallery combustion gas cabin security device |
| CN109557134A (en) * | 2019-01-21 | 2019-04-02 | 中国矿业大学(北京) | A kind of pipe gallery combustion gas cabin is every datonation-inhibition experimental provision |
| CN110057262A (en) * | 2019-04-24 | 2019-07-26 | 常州大学 | Compound datonation-inhibition body based on the foam metal filled with superfine powder Explosion suppressant |
| CN210031904U (en) * | 2019-01-10 | 2020-02-07 | 中国电建集团西北勘测设计研究院有限公司 | Explosion-proof layer of layered comprehensive pipe gallery |
| CN111346321A (en) * | 2020-04-09 | 2020-06-30 | 昆明瑞建送变电工程有限公司 | Flexible flame-retardant explosion suppression system for tunnel |
| CN112012241A (en) * | 2020-09-17 | 2020-12-01 | 张延年 | Assembled explosion-proof piping lane |
| CN114377319A (en) * | 2021-01-27 | 2022-04-22 | 福州大学 | Pipe gallery gas explosion suppression method and device and pipe gallery explosion suppression simulation experiment system |
| CN115506408A (en) * | 2022-10-28 | 2022-12-23 | 浙大城市学院 | Protection system and method for explosion in pipe gallery |
-
2023
- 2023-04-07 CN CN202310361820.2A patent/CN116105566B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101254331A (en) * | 2007-12-27 | 2008-09-03 | 兰州理工大学 | Long damp cylinder driving fire prevention isolated system |
| CN103790622A (en) * | 2014-01-21 | 2014-05-14 | 中国矿业大学 | Method for active explosion proofing and explosion suppression through high-pressure inert gas |
| EP3199207A2 (en) * | 2016-01-28 | 2017-08-02 | Peter Reitinger | Pressure relief device, modular pressure relief unit and fire protection device |
| CN106362326A (en) * | 2016-10-18 | 2017-02-01 | 上海市政工程设计研究总院（集团）有限公司 | Fire prevention system for cable tunnel and underground comprehensive pipe gallery cable tank |
| CN108193707A (en) * | 2017-12-22 | 2018-06-22 | 成都市市政工程设计研究院 | A kind of comprehensive pipe gallery structure |
| CN109243279A (en) * | 2018-09-05 | 2019-01-18 | 中国矿业大学 | A kind of underground pipe gallery electric power cabin fire test device |
| CN109373199A (en) * | 2018-10-29 | 2019-02-22 | 上海市政工程设计研究总院（集团）有限公司 | A kind of pipe gallery combustion gas cabin security device |
| CN210031904U (en) * | 2019-01-10 | 2020-02-07 | 中国电建集团西北勘测设计研究院有限公司 | Explosion-proof layer of layered comprehensive pipe gallery |
| CN109557134A (en) * | 2019-01-21 | 2019-04-02 | 中国矿业大学(北京) | A kind of pipe gallery combustion gas cabin is every datonation-inhibition experimental provision |
| CN110057262A (en) * | 2019-04-24 | 2019-07-26 | 常州大学 | Compound datonation-inhibition body based on the foam metal filled with superfine powder Explosion suppressant |
| CN111346321A (en) * | 2020-04-09 | 2020-06-30 | 昆明瑞建送变电工程有限公司 | Flexible flame-retardant explosion suppression system for tunnel |
| CN112012241A (en) * | 2020-09-17 | 2020-12-01 | 张延年 | Assembled explosion-proof piping lane |
| CN114377319A (en) * | 2021-01-27 | 2022-04-22 | 福州大学 | Pipe gallery gas explosion suppression method and device and pipe gallery explosion suppression simulation experiment system |
| CN115506408A (en) * | 2022-10-28 | 2022-12-23 | 浙大城市学院 | Protection system and method for explosion in pipe gallery |
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| Publication number | Publication date |
|---|---|
| CN116105566A (en) | 2023-05-12 |
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