阅读说明：本技术 一种城市管廊气体消防和气体净化管网系统及其实现方法 (Urban pipe gallery gas fire-fighting and gas purification pipe network system and implementation method thereof ) 是由 李昆晟 朱峻永 陈静 熊刚 刘军 高超 周强 付强林 冯群鑫 于 2021-08-16 设计创作，主要内容包括：本发明公开了一种城市管廊气体消防和气体净化管网系统及其实现方法,该系统包括设置在管廊内的管网系统以及分别与所述管网系统连接的消防气体储存装置和有害气体回收装置；所述管网系统包括沿着管廊顶部敷设的分支管道以及一端与所述分支管道连接另一端延伸出管廊外的主管道；所述主管道的所述另一端与消防气体储存和有害气体回收装置连接；所述主管道上设有第一双向增压装置,所述分支管道上设有若干气体喷嘴。该发明能够解决大埋深、高落差、多转弯等复杂地形城市管廊灭火困难大、灭火时间长,以及火灾造成的有毒有害气体回收困难,短时间人员无法进入作业等问题。(The invention discloses a city pipe gallery gas fire-fighting and gas purification pipe network system and an implementation method thereof, wherein the system comprises a pipe network system arranged in a pipe gallery, a fire-fighting gas storage device and a harmful gas recovery device which are respectively connected with the pipe network system; the pipe network system comprises branch pipes laid along the top of the pipe gallery and a main pipe, one end of the main pipe is connected with the branch pipes, and the other end of the main pipe extends out of the pipe gallery; the other end of the main pipeline is connected with a fire-fighting gas storage and harmful gas recovery device; the main pipeline is provided with a first bidirectional supercharging device, and the branch pipelines are provided with a plurality of gas nozzles. The invention can solve the problems that the urban pipe gallery with complex terrains such as large buried depth, high fall, multiple turns and the like is difficult to extinguish fire and long in fire extinguishing time, toxic and harmful gas caused by fire is difficult to recover, personnel cannot enter the operation in short time, and the like.)

1. A city pipe gallery gas fire protection and gas purification pipe network system is characterized by comprising a pipe network system arranged in a pipe gallery, a fire protection gas storage device and a harmful gas recovery device which are respectively connected with the pipe network system; the pipe network system comprises branch pipes laid along the top of the pipe gallery and a main pipe, one end of the main pipe is connected with the branch pipes, and the other end of the main pipe extends out of the pipe gallery; the other end of the main pipeline extending out of the pipe gallery is respectively connected with a fire-fighting gas storage device and a harmful gas recovery device; the main pipeline is provided with a first bidirectional supercharging device, and the branch pipelines are provided with a plurality of gas nozzles.

2. The urban pipe gallery gas fire fighting and gas purification pipe network system according to claim 1, wherein the diameters of the branch pipes are gradually reduced from the end connected with the main pipe to the end far away from the main pipe.

3. The urban pipe gallery gas fire fighting and gas purification pipe network system according to claim 1, wherein the inner diameter of the gas nozzles on the branch pipes is gradually increased from the end connected with the main pipe to the end away from the main pipe.

4. The urban pipe gallery gas fire fighting and gas purification pipe network system according to claim 1, wherein a second bidirectional supercharging device is provided on said branch pipe.

5. The urban pipe gallery gas fire fighting and gas purification pipe network system according to claim 1, wherein said second bidirectional supercharging device is provided in the middle of said branch pipe.

6. The urban pipe gallery gas fire fighting and gas purification pipe network system according to claim 1, wherein the end of the main pipe connected to the branch pipe is disposed in the middle of the pipe gallery.

7. The urban pipe gallery gas fire fighting and gas purification pipe network system according to claim 1, wherein said other end of said main pipe extends outside the pipe gallery from a ventilation shaft, said other end of the main pipe extending outside the pipe gallery being connected to a first quick coupler.

8. The urban pipe gallery gas fire fighting and gas purification pipe network system according to claim 1, wherein said fire fighting gas storage device and said harmful gas recovery device are integrated on a fire fighting truck, said fire fighting gas storage device being provided with a second quick coupler, said harmful gas recovery device being provided with a third quick coupler, said second quick coupler and said third quick coupler being connected to said first quick coupler by high pressure hoses, respectively.

9. The method for realizing the urban pipe gallery gas fire-fighting and gas purification pipe network system according to any one of claims 1 to 8, characterized by comprising the following steps:

s1: monitoring whether a fire occurs in the pipe gallery; if yes, go to step S2; otherwise, directly executing step S4;

s2: connecting a pipe network system with a fire-fighting gas storage device, opening the fire-fighting gas storage device, enabling a first supercharging device in a main pipeline to rotate forwards, and injecting the pressurized fire-fighting gas into a pipe gallery through a gas nozzle on a branch pipeline until fire extinguishment is finished;

s3: closing the fire-fighting gas storage device, connecting the pipe network system with the harmful gas recovery device, simultaneously reversing the first supercharging device in the main pipeline, and pumping the toxic and harmful gas in the pipe gallery into the harmful gas recovery device in the vehicle for purification until the purification is finished;

s4: the first supercharging device in the main pipeline rotates positively and injects a proper amount of fresh air into the pipe gallery through the pipe network system.

Technical Field

The invention relates to a gas fire-fighting and gas purification pipe network system for an urban pipe gallery and an implementation method thereof.

Background

In recent years, the pipe gallery scale of different types such as city utility tunnel, underground cable tunnel develops at a high speed, because the underground passage resource is more and more nervous, city pipe gallery demonstrates characteristics such as big buried depth, high drop, many turns, to Chongqing area for example, some pipe gallery buried depth reaches 30 meters, passageway shaft drop reaches 50 meters, some fire prevention district section sets up and reaches 400 meters, once the pipe gallery breaks out fire, current active fire control technique is lacked, very easily take place because put out a fire untimely, can not effectively put out a fire, lead to the fire incident to enlarge, cause serious influence for city economy society.

At present, the active fire-fighting technology of urban pipe galleries comprises suspension type dry powder fire extinguishing bombs, fire-fighting robots, high-pressure water mist and the like. Because the dry powder fire extinguishing bomb is generally hung at the top of the pipe gallery, the fire at the bottom of the tunnel cannot be extinguished in time, meanwhile, the dry powder fire extinguishing bomb needs to be installed on the whole line, needs to be replaced integrally after 3-5 years, and has high investment cost; the fire-fighting robot carries the superfine dry powder fire extinguishing bomb, reaches a fire source point along a track to extinguish the fire when the fire occurs, but the equipment and maintenance cost is high, and the implementation difficulty is high under the high-fall terrain; the high-pressure water mist fire extinguishing technology is popularized and applied in partial areas, but the high-pressure water mist fire extinguishing technology is expensive in manufacturing cost and large in later maintenance amount of equipment. Meanwhile, in recent years, the carbon dioxide fire extinguishing technology is gradually applied to urban cable tunnels, but in the existing research technology, under the complex terrain conditions of large burial depth, high fall, multiple turns and the like, the carbon dioxide is limited by vertical shafts, turning terrains and the like, so that effective fire extinguishing cannot be realized.

Meanwhile, after a fire disaster occurs in the pipe gallery, a large amount of toxic and harmful gases such as CO2 and HCL can be generated and discharged into the air, so that the environment can be seriously polluted, and in addition, the CO2 fire extinguishing gas can be deposited in the tunnel in a large amount and cannot be rapidly discharged, so that the later-stage emergency progress is seriously influenced.

Disclosure of Invention

The invention aims to provide a city pipe gallery gas fire-fighting and gas purification pipe network system and an implementation method thereof, and aims to solve the problems that the city pipe gallery is difficult to extinguish fire and has long fire-extinguishing time due to complex terrains such as large buried depth, high fall, multiple turns and the like, toxic and harmful gases are difficult to recover due to fire, and personnel cannot enter the city pipe gallery for a short time to operate.

In order to solve the technical problem, the invention provides a gas fire-fighting and gas purification pipe network system for an urban pipe gallery, which comprises a pipe network system arranged in the pipe gallery, and a fire-fighting gas storage device and a harmful gas recovery device which are respectively connected with the pipe network system; the pipe network system comprises branch pipes laid along the top of the pipe gallery and a main pipe, one end of the main pipe is connected with the branch pipes, and the other end of the main pipe extends out of the pipe gallery; the other end of the main pipeline extending out of the pipe gallery is respectively connected with a fire-fighting gas storage device and a harmful gas recovery device; the main pipeline is provided with a first bidirectional supercharging device, and the branch pipelines are provided with a plurality of gas nozzles.

Further, the diameter of the branch pipeline is gradually reduced from the end connected with the main pipeline to the end far away from the main pipeline.

Further, the inner diameter of the gas nozzle on the branch pipeline is gradually increased from the end connected with the main pipeline to the end far away from the main pipeline.

Further, a second bidirectional supercharging device is arranged on the branch pipeline.

Further, the second bidirectional supercharging device is provided in the middle of the branch pipe.

Further, the one end setting that trunk line and branch pipe are connected is in the middle part of piping lane.

Further, the other end of the main pipeline extends out of the pipe gallery through the ventilating shaft, and the other end of the main pipeline extending out of the ventilating shaft is connected with a first quick coupler.

Furthermore, the fire-fighting gas storage device and the harmful gas recovery device are integrated on a fire truck, a second quick coupler is arranged on the fire-fighting gas storage device, a third quick coupler is arranged on the harmful gas recovery device, and the second quick coupler and the third quick coupler are respectively connected with the first quick coupler through high-pressure hoses.

In addition, the invention provides a method for realizing an urban pipe gallery gas fire-fighting and gas purification pipe network system, which comprises the following steps:

s1: monitoring whether a fire occurs in the pipe gallery; if yes, go to step S2; otherwise, directly executing step S4;

s2: connecting a pipe network system with a fire-fighting gas storage device, opening the fire-fighting gas storage device, enabling a first supercharging device in a main pipeline to rotate forwards, and injecting the pressurized fire-fighting gas into a pipe gallery through a gas nozzle on a branch pipeline until fire extinguishment is finished;

s3: closing the fire-fighting gas storage device, connecting the pipe network system with the harmful gas recovery device, simultaneously reversing the first supercharging device in the main pipeline, and pumping the toxic and harmful gas in the pipe gallery into the harmful gas recovery device in the vehicle for purification until the purification is finished;

s4: the first supercharging device in the main pipeline rotates positively and injects a proper amount of fresh air into the pipe gallery through the pipe network system.

The invention has the beneficial effects that: the fire extinguishing gas is introduced into the pipe gallery by using a pipe network system, so that the fire fighting problem of the urban pipe gallery with complex terrains such as large buried depth, high fall, multiple turns and the like can be effectively solved, particularly, a uniform full-submerged fire extinguishing system is established in a fire-proof subarea range by reasonably arranging pipe network systems such as branch pipes, nozzles and the like, and the uniform full-submerged fire extinguishing system can extinguish fire in the first time and without difference when any place has a fire; besides, the system integrates the functions of gas fire extinguishing, gas recovery, air purification and the like, and adopts a toxic and harmful gas recovery technology besides the fire extinguishing function, so that the problem of serious environmental pollution caused by the emission of toxic and harmful gases such as CO, CO2, HCL and the like to the air can be solved; the adopted pipe network system pressurization technology can solve the air purification problem of a large-buried-depth and long-partition pipe gallery; in addition, the system integrates the functions of fire fighting and gas purification, has the characteristics of small investment, short construction period, rapid fire extinguishing, simple maintenance and the like, and can be applied to the engineering fields of new construction, modification and the like of urban pipe galleries.

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 embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic structural diagram of one embodiment of the present invention;

FIG. 2 is a flow chart of an implementation of one embodiment of the present invention.

1. Pipe galleries (including urban comprehensive pipe galleries, underground cable tunnels and the like); 2. a firewall; 3. a ventilation shaft; 4. a first quick coupler; 5. a high pressure hose; 6. a main pipeline; 7. a fire-fighting gas storage device; 71. a third quick coupler; 8. a harmful gas recovery device; 81. a second quick coupler; 9. a fire engine; 10. a first pressure boosting device; 11. a branch pipe; 12. a second supercharging device; 13. and a gas nozzle.

Detailed Description

As shown in fig. 1, the urban pipe gallery 1 gas fire-fighting and gas purification pipe network system comprises a pipe network system arranged in a pipe gallery 1, and a fire-fighting gas storage device 7 and a harmful gas recovery device 8 which are respectively connected with the pipe network system; the pipe network system comprises branch pipes 11 laid along the top of the pipe gallery 1 and a main pipe 6 with one end connected with the branch pipes 11 and the other end extending out of the pipe gallery 1; the other end of the main pipeline 6 is connected with a fire-fighting gas storage and harmful gas recovery device 8; the main pipeline 6 is provided with a first bidirectional supercharging device, and the branch pipeline 11 is provided with a plurality of gas nozzles 13. Wherein first bidirectional supercharging device can adopt the booster pump, and the booster pump is installed on trunk line 6, but corotation and reversal, just changes to and carries gas in 1 to the piping lane, and the reversal is to the exhaust gas outside 1 piping lane. Because trunk line 6 is longer, generally reaches more than 100 meters, and gas pressure decay is great, and consequently, the booster pump can play the loss of pressure effect of compensation, and when no fire control gas filled into, can be constantly carry 1 external fresh air of piping lane, guarantee 1 gas circulation of piping lane, avoid poisonous and harmful gas deposit, still can guarantee trunk line 6 drily simultaneously, prevent the inside corrosion of pipeline.

According to the invention, the fire extinguishing gas is introduced into the pipe gallery 1 by using the pipe network system, so that the fire fighting problem of the urban pipe gallery 1 with complex terrains such as large buried depth, high fall, multiple turns and the like can be effectively solved, particularly, a uniform full-submerged fire extinguishing system is established in a fire-proof subarea range by reasonably arranging the pipe network systems such as branch pipes 11, nozzles and the like, and the uniform full-submerged fire extinguishing system can extinguish fire in the first time and without difference when a fire breaks out in any place; besides, the system integrates the functions of gas fire extinguishing, gas recovery, air purification and the like, adopts a toxic and harmful gas recovery technology besides the fire extinguishing function, can solve the problem of serious environmental pollution caused by the emission of toxic and harmful gases such as CO, CO2, HCL and the like into the air, and can solve the problem of air purification of a large-buried-depth and long-partition pipe gallery 1 by adopting a pipe network system pressurization technology; in addition, this system has gathered fire control and gas purification function in an organic whole, has characteristics such as investment is little, construction cycle is short, puts out a fire fast, maintains simply, can use in engineering fields such as city piping lane 1 new construction, transformation.

According to one embodiment of the present application, the diameter of the branch pipe 11 is gradually reduced from the end connected to the main pipe 6 to the end away from the main pipe 6. The branch pipes 11 are connected with the main pipe 6 through the crossover joints respectively and extend along the two ends of the pipe gallery 1. Moreover, in order to reduce the attenuation of the gas pressure in the pipeline, after the branch pipelines 11 are connected from the main pipeline 6, the pipe diameters of the branch pipelines are in a descending trend so that the fire extinguishing gas can be uniformly sent to all parts in the whole pipeline lane 1, the specification of the branch pipelines 11 generally adopts DN40-DN32-DN25, and the length of each section of the branch pipeline 11 is determined according to the partition length and the gas pressure attenuation condition.

According to one embodiment of the present application, the inner diameter of the gas nozzle 13 on the branch pipe 11 gradually increases from the end connected to the main pipe 6 to the end away from the main pipe 6. The gas nozzles 13 are uniformly arranged on the branch pipelines 11 and can be suspended one by one every 10 meters, the nozzles are all kept in an open state, in order to ensure the uniformity of the fire-fighting gas sprayed inside the pipe gallery 1, the specification of the gas nozzles 13 is opposite to the change of the branch pipelines 11, the inner diameter of the nozzles presents an increasing trend, the specification is generally 4-5-6, and the specification of the nozzles on each section of the branch pipelines 11 is determined according to calculation.

According to an embodiment of the present application, a second bi-directional supercharging device is provided on the branch conduit 11, by providing a second supercharging device 12. Similarly, the second supercharging device 12 may be a booster pump adapted to the main pipe 6, and the pressure of the gas entering the branch pipe 11 may be compensated by providing the booster pump.

According to an embodiment of the present application, said second bidirectional supercharging device is arranged in the middle of said branch duct 11. By arranging the second bi-directional pressurisation means in the middle of the branch conduit 11, the uniformity of the injection of the fire fighting gas inside the pipe gallery 1 can be ensured.

According to one embodiment of the present application, the end of the main pipe 6 connected to the branch pipe 11 is disposed in the middle of the pipe gallery 1. One end setting through extending into piping lane 1 with trunk line 6 is at the middle part of piping lane 1, then uses trunk line 6 as the center, arranges lateral conduit 11 to both ends, can improve the gas circulation homogeneity in every pipeline.

According to an embodiment of the application, trunk line 6 the other end extends outside gallery 1 by ventilating shaft 3, and trunk line 6 extends outside ventilating shaft 3 the other end is connected with first quick-assembling joint 4. The main pipeline 6 enters the pipe gallery 1 from the ventilation shaft, is laid to the middle of the pipe gallery 1 along the top of the pipe gallery 1, the main pipeline 6 is determined according to the length of a fireproof partition section, and the specification generally adopts DN 65; the end of the main pipeline 6 extending out of the ventilation shaft 3 is provided with a first quick coupler 4 which can be quickly connected with an external pipeline so as to facilitate air supply and air exhaust.

According to one embodiment of the application, fire-fighting gas storage device 7 and harmful gas recovery device 8 are integrated on fire engine 9, be equipped with second quick-assembling joint 81 on the fire-fighting gas storage device, be equipped with third quick-assembling joint 71 on the harmful gas recovery device 8, second quick-assembling joint 81 and third quick-assembling joint 71 respectively through high-pressure hose 5 with first quick-assembling joint 4 is connected. Through integrating fire control gas storage device 7 and harmful gas recovery unit 8 on fire engine 9, can be convenient for remove the operation, when taking place the condition of a fire, can realize fast that gaseous and the gas recovery equipment of putting out a fire sends the scene.

In addition, as shown in fig. 2, the invention provides a method for implementing a gas fire-fighting and gas purification pipe network system of an urban pipe gallery 1, which comprises the following steps:

s1: monitoring whether a fire occurs in the pipe gallery 1; if yes, go to step S2; otherwise, directly executing step S4; the monitoring unit such as video monitoring unit, temperature monitoring unit, smog can be selected specifically to set up in piping lane 1 to the fire detection means and realize, and it is conventional fire monitoring mode, and technical personnel in the art can carry out specific selection as required, and the no longer repeated description here.

S2: connecting a pipe network system with a fire-fighting gas storage device 7, opening the fire-fighting gas storage device 7, enabling a first supercharging device 10 in a main pipeline 6 to rotate forwards, and injecting fire-fighting gas into a pipe gallery 1 through a gas nozzle 13 on a branch pipeline 11 after supercharging until fire extinguishment is finished;

s3: closing the fire-fighting gas storage device 7, connecting the pipe network system with the harmful gas recovery device 8, simultaneously reversing the first supercharging device 10 in the main pipeline 6, and pumping the toxic and harmful gas in the pipe gallery 1 into the harmful gas recovery device 8 in the vehicle for purification until the purification is finished; the method adopts a poisonous and harmful gas recovery technology, and can solve the problem of serious environmental pollution caused by the emission of poisonous and harmful gases such as CO, CO2, HCL and the like into the air.

S4: so that the first supercharging device 10 in the main pipeline 6 positively rotates and injects a proper amount of fresh air into the pipe gallery 1 through the pipe network system. By continuously conveying external fresh air to the pipe gallery 1, the gas circulation of the pipe gallery 1 can be ensured, the deposition of toxic and harmful gas is avoided, and personnel can quickly enter the pipe gallery 1 to carry out subsequent recovery work; when a fire disaster does not happen, fresh air can be continuously conveyed into the tunnel, air circulation is guaranteed, compared with the existing method that fans are adopted at two ends of a fireproof subarea for ventilation, the method has better ventilation effect and also has important significance for improving the operation environment of the pipe gallery 1; meanwhile, the main pipeline 6 can be ensured to be dry, and the inside of the pipeline is prevented from being rusted.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.