CN113446044B - Ventilation self-adsorption oxygen generation automatic-inflation air bag supercharging bin full-tunnel oxygen supply device - Google Patents
Ventilation self-adsorption oxygen generation automatic-inflation air bag supercharging bin full-tunnel oxygen supply device Download PDFInfo
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- CN113446044B CN113446044B CN202110760690.0A CN202110760690A CN113446044B CN 113446044 B CN113446044 B CN 113446044B CN 202110760690 A CN202110760690 A CN 202110760690A CN 113446044 B CN113446044 B CN 113446044B
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 228
- 239000001301 oxygen Substances 0.000 title claims abstract description 228
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 228
- 238000009423 ventilation Methods 0.000 title claims abstract description 74
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 39
- 239000002808 molecular sieve Substances 0.000 claims abstract description 21
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000012544 monitoring process Methods 0.000 claims abstract description 13
- 239000004744 fabric Substances 0.000 claims description 29
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- 238000003860 storage Methods 0.000 claims description 10
- 239000000523 sample Substances 0.000 claims description 5
- 238000012360 testing method Methods 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 3
- 238000009958 sewing Methods 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 21
- 239000006185 dispersion Substances 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
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- 230000005641 tunneling Effects 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000003463 adsorbent Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
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- 229910052751 metal Inorganic materials 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000006213 oxygenation reaction Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- 206010021143 Hypoxia Diseases 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- 239000002156 adsorbate Substances 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/08—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
A ventilation self-adsorption oxygen generation automatic inflation air bag supercharging cabin full-tunnel oxygen supply device comprises a fan, a ventilation pipe, a ventilation self-adsorption oxygen generation module, an automatic inflation air bag curtain, a supercharging pump, an oxygen distributor and an air suction device; the ventilation self-adsorption oxygen generation module comprises a filter screen, an electromagnetic valve, two molecular sieve beds, a compressor and a controller; the ventilation pipe is communicated with the fan; the filter screen is embedded in the ventilation pipe; the ventilation pipe, the compressor, the electromagnetic valve, the two molecular sieve beds and the oxygen distributor are communicated in sequence; the booster pump is communicated with the oxygen distributor; when the two automatic inflatable air bag curtains are unfolded, a closed oxygen-enriched bin communicated with the oxygen distributor is enclosed between the two automatic inflatable air bag curtains and the inner wall of the tunnel; a monitoring sensing device is arranged in the closed oxygen-enriched bin; the air inlet port of the air suction device is communicated with the closed oxygen-enriched cabin through a pipeline. The invention solves the problems of ventilation, oxygen production and oxygen supply of the existing high-altitude tunnel, is flexible and convenient and can save investment.
Description
Technical Field
The invention relates to the technical field of tunnels and underground engineering, in particular to a ventilation self-adsorption oxygen generation automatic inflation air bag supercharging cabin full-tunnel oxygen supply device.
Background
The problems of ventilation and oxygen supply in the construction of high-altitude and long-distance tunnels in severe cold and low oxygen shortage in high-altitude areas and severe environments in the construction of extra-long tunnels belong to the worldwide technical problem, and the problems not only directly influence the construction investment of the tunnels, but also influence the construction environment and the construction safety of the tunnels to a great extent. Engineering practice shows that the atmospheric pressure and the oxygen content of air of a tunnel with the altitude of 4300m are only about 60% of those of a plain area. For people who are accustomed to living in low altitude areas, when the people are in a high altitude environment, because the oxygen content in the inhaled air is insufficient, tissue oxidation disorder can be caused, and anoxic (barotropic) hypoxia appears, which is also a main reason for causing high altitude reaction. Therefore, oxygen is supplied to the construction of the high-altitude extra-long tunnel, so that the physiological requirements of the human body are met, and meanwhile, the construction efficiency can be effectively improved.
At present, the oxygen supply mode commonly used in high altitude tunnels mainly has fixed oxygen uptake station (room), hyperbaric oxygen storehouse, dispersion oxygen supply, oxygen bar car oxygen supply and individual backpack oxygen supply, and wherein high altitude extra-long tunnel construction face dispersion oxygen supply can take three kinds of modes: pure pressurization oxygenation, pure dispersion oxygen supply and a mode of combining pressurization and dispersion oxygen supply; the pressurization and oxygenation aim to increase the atmospheric pressure so as to increase the oxygen partial pressure; the dispersion oxygen supply is that the oxygen provided by the special oxygen supply equipment is mixed with the ventilation pipe or the special pipeline and is sent out, so that the purpose of improving the oxygen partial pressure of the environment is also achieved; the combined oxygen supply mode combines the dual characteristics of pressurization oxygenation and dispersion oxygen supply; oxygen demand and supercharging capacity are important parameters of a dispersion oxygen supply mode, the two parameters reflect the capacity requirements of oxygen supply and supercharging equipment, and in actual tunnel construction, the oxygen supercharging capacity can be determined through ventilation air volume and air pressure, so that the determination of the oxygen demand, the ventilation supercharging capacity and the mutual relationship of the oxygen demand and the ventilation supercharging capacity is important;
however, the existing oxygen generation and supply equipment for high-altitude tunnel construction is large in investment, oxygen supply is not flexible when an oxygen generation station and an oxygen uptake station are arranged outside a tunnel, and when an oxygen supply system is arranged in the tunnel, a pipeline for supplying oxygen to the tunnel is long, so that construction interference is large; when oxygen is supplied to the deep part of the extra-long tunnel, the pressure of the local dispersed oxygen supply is insufficient, the oxygen is dissipated, and the effect of effective oxygen supply is poor; the oxygen bar car cannot solve the problem of efficiency reduction of construction mechanical equipment; personal backpack oxygen supply equipment has heavy weight, security poor and increase intensity of labour scheduling problem.
Disclosure of Invention
Objects of the invention
The invention provides a ventilation self-adsorption oxygen generation automatic inflation air bag supercharging cabin full-tunnel oxygen supply device for solving the technical problems in the background technology.
(II) technical scheme
The invention provides a ventilation self-adsorption oxygen generation automatic inflation airbag supercharging cabin full-tunnel oxygen supply device, which comprises a fan, a ventilation pipe, a ventilation self-adsorption oxygen generation module, an automatic inflation airbag curtain, a booster pump, an oxygen distributor and an air suction device, wherein the ventilation pipe is arranged in a tunnel; the ventilation self-adsorption oxygen generation module comprises a filter screen, a compressor, two molecular sieve beds, a plurality of air outlet terminals, an electromagnetic valve and a controller;
the air inlet pipe orifice of the ventilation pipe is connected with the air outlet end of the fan; the filter screen is embedded in the ventilation pipe; the air inlet end of the compressor is connected with the air outlet pipe orifice of the ventilation pipe through a pipeline, and the air outlet end of the compressor is connected with the air inlet end of an electromagnetic valve for separating compressed air through a pipeline; the exhaust end of the electromagnetic valve is communicated with the ventilation pipe, and the oxygen outlet end of the electromagnetic valve is communicated with the two molecular sieve beds through a pipeline; the two molecular sieve beds are respectively communicated with a plurality of air outlet terminals through pipelines; the plurality of air outlet terminals are communicated with the oxygen distributor; a plurality of exhaust holes are arranged on the oxygen distributor;
the air outlet end of the booster pump is connected with the air inlet end of the oxygen distributor through a pipeline;
the automatic inflatable air bag curtain comprises a vacuum air pump, a plurality of air rib tubes and a curtain cloth; the air rib pipes are connected with the inner wall of the curtain cloth and are communicated with each other, and the air inlet port of any one air rib pipe is communicated with the air outlet port of the vacuum air pump; under the unfolded state of the two curtain cloth, the two curtain cloth are pressed tightly on the inner wall of the tunnel, and a closed oxygen-enriched chamber is enclosed between the two curtain cloth and the inner wall of the tunnel; the closed oxygen-enriched cabin is communicated with the plurality of air outlet terminals, and a monitoring sensing device is arranged in the closed oxygen-enriched cabin; the monitoring sensing device, the vacuum air pump, the air suction device, the compressor, the controller, the electromagnetic valve, the booster pump and the fan are electrically connected;
the air inlet port of the air suction device is communicated with the closed oxygen-enriched cabin through a pipeline.
Preferably, the monitoring and sensing device comprises a temperature sensor, an air oxygen content concentration detector and a humidity sensor.
Preferably, a plurality of oxygen content test probes are arranged on the plurality of air outlet terminals.
Preferably, the curtain cloth is sewn by fiber cloth, and the area of the curtain cloth after being unfolded is 30-150 m2And the air pressure in the cord fabric is 0.01-0.05 air pressure.
Preferably, the oxygen storage device is further included; the air inlet end of the oxygen storage device is connected with the air outlet ends of the two molecular sieve beds through a pipeline, and the air outlet end of the oxygen storage device is connected with one air inlet end of the oxygen distributor.
Preferably, the hole shape of each exhaust hole on the oxygen distributor is quincunx, and the gas distribution mode of the oxygen distributor is as follows: the oxygen is sprayed out from the plurality of exhaust holes in a jet flow mode, and the sprayed oxygen is disturbed mutually to form an oxygen curtain.
Compared with the prior art, the technical scheme of the invention has the following beneficial technical effects:
the ventilation self-adsorption oxygen generation automatic inflation airbag pressurized cabin full-tunnel oxygen supply device provided by the invention adsorbs and prepares oxygen from air flow of an air pipe through the ventilation self-adsorption oxygen generation module arranged on the ventilation pipe, and an automatic inflation airbag curtain is expanded and then is tightly pressed with the inner wall of a tunnel to form a closed oxygen-enriched cabin with any space size in the tunnel; the construction personnel and machinery in the closed oxygen-enriched bin are supplied with oxygen through the booster pump and the oxygen distributor, and the suction device is used for pumping and discharging dirty air in the closed oxygen-enriched bin, so that the problems of ventilation, oxygen generation and oxygen supply of the existing high-altitude tunnel are solved, and the problems of large investment of oxygen generation and supply equipment for long-distance construction, long oxygen supply pipeline, large construction interference, inflexible arrangement of an oxygen supply station and poor oxygen supply effect at the deep part of an extra-long tunnel are solved;
the ventilation self-adsorption oxygen generation module and the automatic inflation airbag curtain provided by the invention can be prefabricated in a modularization mode according to design, are adjustable in size and convenient to manufacture, greatly reduce the manufacturing cost and shorten the construction period, can be used on the tunnel face independently or implemented in groups, can adapt to different tunnel section shapes, can play a role of an air door by designing the ventilation mode, and reduce the workload of assembling and disassembling the ventilation equipment and the air door
The invention can effectively improve the oxygen content in the tunnel construction environment, accelerate the ventilation and oxygen supply effects of the tunnel, improve the construction environment, improve the plateau tunnel construction efficiency and is worthy of popularization.
Drawings
Fig. 1 is a schematic structural view of a ventilation self-adsorption oxygen-making automatic-inflation air bag supercharging cabin full-tunnel oxygen supply device provided by the invention in an application state.
Fig. 2 is a schematic structural view of a full-tunnel oxygen supply device of a ventilation self-adsorption oxygen generation automatic-inflation air bag pressurized cabin provided by the invention.
Fig. 3 is a schematic structural view of a ventilation self-adsorption oxygen generation module in the ventilation self-adsorption oxygen generation automatic inflation airbag supercharged cabin full tunnel oxygen supply device provided by the invention.
Fig. 4 is a schematic structural view of an automatic inflatable airbag curtain in a full-tunnel oxygen supply device of a ventilation self-adsorption oxygen generation automatic inflatable airbag pressurized cabin provided by the invention in an unfolded state.
FIG. 5 is a graph showing the effect of air discharge and tunnel face excavation depth on oxygen supply in an embodiment of the present invention.
Reference numerals: 1. a fan; 2. a vent pipe; 3. a ventilation self-adsorption oxygen generation module; 4. an automatically inflatable airbag curtain; 41. an air rib tube; 5. a tunnel; 6. monitoring a sensing device; 7. a booster pump; 8. an oxygen distributor; 9. an oxygen reservoir; 10. an air suction device; 31. a filter screen; 32. a compressor; 33. a molecular sieve bed; 34. an air outlet terminal; 35. an electromagnetic valve; 36. a controller; 37. oxygen content test probe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the accompanying drawings in combination with the embodiments. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1-4, the ventilation self-adsorption oxygen generation automatic inflation airbag pressurized cabin full tunnel oxygen supply device provided by the invention comprises a fan 1, a ventilation pipe 2 for being installed in a tunnel 5, a ventilation self-adsorption oxygen generation module 3, an automatic inflation airbag curtain 4, a booster pump 7, an oxygen distributor 8 and an air suction device 10; the ventilation self-adsorption oxygen generation module 3 comprises a filter screen 31, a compressor 32, two molecular sieve beds 33, a plurality of gas outlet terminals 34, an electromagnetic valve 35 and a controller 36;
the air inlet pipe orifice of the ventilation pipe 2 is connected with the air outlet end of the fan 1;
it should be noted that the fan 1 is an axial flow fan; the fan 1 is selected according to the construction ventilation design of the tunnel 5, single-head press-in type or roadway type ventilation is adopted according to the air quantity required by the extra-long tunnel 5, and the fan 1 can be placed outside a hole or moved into the hole; the pipe diameter of the ventilation pipe 2 is calculated and rotated according to the design, and the air leakage rate is tested;
the ventilation self-adsorption oxygen generation module 3 comprises components selected from, but not limited to, hoops or iron wires for bundling or flanges for matching with the ventilation pipe 2;
the filter screen 31 is embedded in the ventilation pipe 2;
further, the filter screen 31 is made of high-permeability electrostatic cotton; the filter screen 31 comprises a screen body and a steel ring; the net body made of the high-permeability electrostatic cotton filter net is embedded on a disc-shaped steel ring, and the diameter of the steel ring is consistent with the inner diameter of the air pipe; during installation, the steel ring is matched and inserted into the guide groove arranged on the ventilation pipe 2, and the filter screen 31 arranged can filter particle impurities such as dust and the like in the air conveyed in the ventilation pipe 2;
the air inlet end of the compressor 32 is connected with the air outlet pipe orifice of the vent pipe 2 through a pipeline, and the air outlet end of the compressor 32 is connected with the air inlet end of an electromagnetic valve 35 for separating compressed air through a pipeline;
further, the compressor 32 is an oil-free air compressor which is provided with a silencer and a radiator, and the use performance is good; the center of the compressor 32 and the circle center of the ventilation pipe 2 are on the same straight line and are installed on a steel frame in a matching mode, the steel frame is connected with the ventilation pipe 2, when the air filtering device is used, the compressor 32 compresses air filtered by the filter screen 31, and the compressed air is conveyed into the electromagnetic valve 35;
the center of the electromagnetic valve 35 and the center of the compressor 32 are also on the same straight line, the electromagnetic valve 35 is fixed on a steel frame through a stainless steel pipe, the electromagnetic valve 35 can separate compressed air so as to discharge nitrogen and gas in the compressed air into the ventilation pipe 2, and relatively pure air is conveyed into the two molecular sieve beds 33; the exhaust end of the electromagnetic valve 35 is communicated with the ventilation pipe 2, and the oxygen outlet end of the electromagnetic valve 35 is communicated with the two molecular sieve beds 33 through a stainless steel pipeline;
the two molecular sieve beds 33 are respectively communicated with a plurality of gas outlet terminals 34 through stainless steel pipelines; a plurality of outlet terminals 34 are all in communication with the oxygen distributor 8; a plurality of exhaust holes are arranged on the oxygen distributor 8; wherein the stainless steel pipeline is made of a corrosion-resistant DN25 stainless steel pipe;
further, each molecular sieve bed 33 includes a metal cylinder and a molecular sieve installed inside the metal cylinder; the size of the metal cylinder can be designed according to calculation; the molecular sieve is a strong polar adsorbent containing crystalline meta-aluminosilicate of alkaline-earth elements, has a very consistent pore-size structure and extremely strong adsorption selectivity, and preferentially adsorbs impurities such as nitrogen, carbon dioxide, moisture and the like in air in a pipeline with air pressure by utilizing the characteristic of selective adsorption of the special adsorbent for the molecular sieve, so that oxygen with high purity is obtained; the produced oxygen is delivered into the oxygen distributor 8 from a plurality of outlet terminals 34;
the air outlet end of the booster pump 7 is connected with the air inlet end of the oxygen distributor 8 through a pipeline;
the automatic inflatable airbag curtain 4 comprises a vacuum air pump, a plurality of air rib tubes 41 and a curtain cloth; the air rib pipes 41 are all connected with the inner wall of the curtain cloth, the air rib pipes 41 are communicated with each other, and the air inlet port of any one air rib pipe 41 is communicated with the air outlet port of the vacuum air pump;
the vacuum air pump injects air into the plurality of air rib pipes to realize automatic inflation and unfolding of the automatic inflation air bag curtain 4, and after oxygen supply is finished, the vacuum air pump can realize quick folding of the automatic inflation air bag curtain 4;
further, the vacuum air pump is a negative pressure type vacuum air pump;
under the unfolded state of the two curtain cloth, the two curtain cloth are pressed tightly on the inner wall of the tunnel 5, and a closed oxygen-enriched bin is enclosed between the two curtain cloth and the inner wall of the tunnel 5; the closed oxygen-enriched bin is communicated with a plurality of air outlet terminals 34, and a monitoring sensing device 6 is arranged in the closed oxygen-enriched bin; the monitoring sensing device 6, the vacuum air pump, the air suction device 10, the compressor 32, the controller 36, the electromagnetic valve 35, the booster pump 7 and the fan 1 are electrically connected; the monitoring and sensing device 6 carries out signal transmission in a wireless or wired mode so as to send detected information to the background terminal, and the background terminal intelligently controls the vacuum air suction pump, the air suction device 10, the compressor 32, the controller 36, the electromagnetic valve 35, the booster pump 7 and the fan 1; the controller 36 is a multi-channel control module and is arranged outside the oxygen enrichment bin so as to be convenient for connecting strong current and weak current;
an air inlet port of the air suction device 10 is communicated with the closed oxygen-enriched cabin through a pipeline, and dirty air in the closed oxygen-enriched cabin is pumped and replaced through the air suction device;
it should be noted that the ventilation self-adsorption oxygen generation module 3 can generate oxygen in the tunnel 5 during air supply, and the ventilation pipe 2 provides sufficient fresh air to affect the oxygen concentration or partial pressure in a certain section in the tunnel during oxygen supply; the fresh air quantity mainly depends on the maximum number of people working in the tunnel at the same time, the operation requirement of an internal combustion engine is adopted, the requirement of the lowest wind speed is met, the gun smoke is diluted, the harmful gas is diluted, and the gun smoke generated by blasting and the tail gas emission ventilation control factor that the power reduction of the diesel engine is obviously increased due to insufficient oxygen air inflow under the load condition are taken as main factors. Air leakage amount calculation caused by large section area of an extra-long tunnel and long air supply distance needs to be considered in air amount calculation; air supply and oxygen generation are carried out together, so that the problem of ventilation and oxygen supply at any position of the extra-long tunnel is solved;
the self-adsorption oxygen generation module 3 is mainly used for physically adsorbing gas or liquid with relatively low density by virtue of molecular forces (including van der waals force and electromagnetic force) between the adsorbent and adsorbate molecules through the adsorbent with relatively strong adsorption capacity, such as a molecular sieve arranged in the self-adsorption oxygen generation module; because the air in the pipeline has higher air pressure, pressurization can be realized, so that the self-adsorption oxygen generation module 3 preferentially adsorbs impurities such as nitrogen, carbon dioxide, moisture and the like in the air, and obtains oxygen with higher purity.
In an alternative embodiment, the monitoring and sensing device 6 comprises a temperature sensor, an air oxygen content concentration detector and a humidity sensor, and is used for monitoring the temperature, the oxygen content and the humidity in the closed oxygen enrichment bin.
In an alternative embodiment, a plurality of oxygen content test probes 37 are provided on the plurality of outlet terminals 34;
the oxygen concentration is tested by a plurality of oxygen content test probes 37, particularly the oxygen concentration in the oxygen enrichment bin, the detected oxygen concentration data information is sent to the controller 36, and the controller 36 carries out calculation feedback to regulate and control the oxygen concentration in the oxygen enrichment bin.
In an optional embodiment, the cord fabric is made of fiber cloth through sewing, and the fiber cloth has the properties of high strength and good flexibility; the plurality of air rib pipes are connected with each other to form a framework of the curtain cloth;
the area of the spread cord fabric is 30-150 m2The air pressure in the cord fabric is 0.01-0.05 air pressure;
in addition, the automatic inflatable air bag curtain 4 is wrapped in an umbrella bag-like backpack manner in a furled state and is attached to the ventilation self-adsorption oxygen generation module 3.
In an alternative embodiment, an oxygen reservoir 9 is also included; the air inlet end of the oxygen storage 9 is connected with the air outlet ends of the two molecular sieve beds 33 through a pipeline, and the air outlet end of the oxygen storage 9 is connected with one air inlet end of the oxygen distributor 8; the rest part which is adsorbed from the air flow of the air pipe and used for preparing oxygen in the ventilation process is stored through an oxygen storage device 9; after the automatic inflatable air bag curtain 4 is unfolded, the oxygen storage 9 operates to rapidly supply oxygen to the closed oxygen-enriched cabin.
In an alternative embodiment, each of the vent holes of the oxygen distributor 8 has a quincunx shape, and the gas distribution manner of the oxygen distributor 8 is as follows: oxygen is sprayed out of the plurality of exhaust holes in a jet flow mode, and the sprayed oxygen is disturbed mutually to form an oxygen curtain which can increase the concentration of local oxygen in the oxygen-enriched bin;
Detailed description of the invention
The full-tunnel oxygen supply device for the ventilation self-adsorption oxygen generation automatic inflation air bag pressurizing cabin has the following effects in practical application:
an oxygen-enriched chamber is formed between a group of automatic inflatable air bag curtains 4 which are unfolded and the face, wherein, the oxygen supply level near the face is equivalent to the oxygen supply amount when the altitude is 3000m according to the theoretical calculation, as shown in figure 5, the graph of the influence of the exhaust air volume and the face tunneling depth on the oxygen supply amount is shown, and the curves 1, 2, 3 and 4 respectively show that the intake air volume is 600m3/h、800m3/h、1000m3H and 1200m3The oxygen production at/h, the specific measured data in FIG. 5 are shown in Table 1 below; table 1 is a data table of measured exhaust air volume and tunnel face tunneling depth to oxygen supply volume;
as can be seen from fig. 5 and table 1, as the tunnel face excavation depth increases, the oxygen demand increases almost proportionally; the larger the air supply quantity is, the larger the oxygen supply quantity is, and the air supply quantity and the oxygen supply quantity are in direct proportion; when a certain air intake is provided, the maximum oxygen supply amount is required to be the maximum at the tunneling depth of the tunnel face along the line, the oxygen-enriched bin can be formed at the deep part of the tunneling tunnel through the device provided by the invention, and the oxygen content meeting the normal requirements of people can be provided in the oxygen-enriched bin.
TABLE 1 measured data table of air exhaust amount and tunnel face tunneling depth to oxygen supply amount
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (6)
1. A ventilation self-adsorption oxygen generation automatic inflation air bag supercharging bin full-tunnel oxygen supply device is characterized by comprising a fan (1), a ventilation pipe (2), a ventilation self-adsorption oxygen generation module (3), an automatic inflation air bag curtain (4), a booster pump (7), an oxygen distributor (8) and an air suction device (10); the ventilation self-adsorption oxygen generation module (3) comprises a filter screen (31), a compressor (32), two molecular sieve beds (33), a plurality of air outlet terminals (34), an electromagnetic valve (35) and a controller (36);
the air inlet pipe orifice of the ventilation pipe (2) is connected with the air outlet end of the fan (1); the filter screen (31) is embedded in the ventilation pipe (2); the air inlet end of the compressor (32) is connected with the air outlet pipe orifice of the ventilation pipe (2) through a pipeline, and the air outlet end of the compressor (32) is connected with the air inlet end of an electromagnetic valve (35) for separating compressed air through a pipeline; the exhaust end of the electromagnetic valve (35) is communicated with the ventilation pipe (2), and the oxygen outlet end of the electromagnetic valve (35) is communicated with the two molecular sieve beds (33) through a pipeline; the two molecular sieve beds (33) are respectively communicated with a plurality of air outlet terminals (34) through pipelines; the plurality of air outlet terminals (34) are communicated with the oxygen distributor (8); a plurality of exhaust holes are arranged on the oxygen distributor (8);
the air outlet end of the booster pump (7) is connected with the air inlet end of the oxygen distributor (8) through a pipeline;
the automatic inflatable airbag curtain (4) comprises a vacuum air pump, a plurality of air rib tubes (41) and a curtain cloth; the air rib pipes (41) are all connected with the inner wall of the curtain cloth, the air rib pipes (41) are communicated with each other, and the air inlet port of any one air rib pipe (41) is communicated with the air outlet port of the vacuum air pump; under the unfolded state of the two curtain cloth, the two curtain cloth press tightly the inner wall of the tunnel (5), and a closed oxygen enrichment bin is enclosed between the two curtain cloth and the inner wall of the tunnel (5); the closed oxygen-enriched bin is communicated with a plurality of air outlet terminals (34), and a monitoring sensing device (6) is arranged in the closed oxygen-enriched bin; the monitoring sensing device (6), the vacuum air pump, the air suction device (10), the compressor (32), the controller (36), the electromagnetic valve (35), the booster pump (7) and the fan (1) are electrically connected;
an air inlet port of the air suction device (10) is communicated with the closed oxygen-enriched cabin through a pipeline.
2. The full-tunnel oxygen supply device of the ventilated self-adsorption oxygen generation automatic-inflation air bag pressurized cabin according to claim 1, wherein the monitoring and sensing device (6) comprises a temperature sensor, an air oxygen content concentration detector and a humidity sensor.
3. The whole tunnel oxygen supply device of the ventilated self-absorption oxygen generation automatic-inflation air bag pressurized cabin according to claim 1, wherein a plurality of oxygen content test probes (37) are arranged on a plurality of air outlet terminals (34).
4. The full-tunnel oxygen supply device of the ventilated self-adsorption oxygen-making automatic-inflation air bag supercharging bin according to claim 1, wherein the curtain cloth is made of fiber cloth by sewing, and the area of the curtain cloth after being unfolded is 30-150 m2And the air pressure in the cord fabric is 0.01-0.05 air pressure.
5. The full-tunnel oxygen supply device of the ventilation self-adsorption oxygen generation automatic-inflation air bag pressurized cabin according to claim 1, characterized by further comprising an oxygen storage (9); the air inlet end of the oxygen storage device (9) is connected with the air outlet ends of the two molecular sieve beds (33) through a pipeline, and the air outlet end of the oxygen storage device (9) is connected with one air inlet end of the oxygen distributor (8).
6. The ventilation self-adsorption oxygen generation automatic inflation air bag supercharging bin full tunnel oxygen supply device according to claim 1, characterized in that the hole shape of each exhaust hole on the oxygen distributor (8) is quincunx, and the gas distribution mode of the oxygen distributor (8) is as follows: the oxygen is sprayed out from the plurality of exhaust holes in a jet flow mode, and the sprayed oxygen is disturbed mutually to form an oxygen curtain.
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