CN215718895U - Ventilation and oxygen supply system for high-altitude tunnel construction - Google Patents
Ventilation and oxygen supply system for high-altitude tunnel construction Download PDFInfo
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- CN215718895U CN215718895U CN202120745546.5U CN202120745546U CN215718895U CN 215718895 U CN215718895 U CN 215718895U CN 202120745546 U CN202120745546 U CN 202120745546U CN 215718895 U CN215718895 U CN 215718895U
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Abstract
The utility model provides a high altitude tunnel construction ventilation oxygen system, relates to tunnel construction equipment field, includes: the sealing module is arranged in the tunnel and used for sealing the inner cavity of the tunnel so as to form a working cavity between the sealing module and the tunnel face of the tunnel; the ventilation pressurizing module is used for conveying a fresh air source into the working cavity; the dust removal module is used for discharging dust in the working cavity out of the working cavity. It can obstruct the tunnel inner chamber for the inside airtight state that is in of tunnel can enough be quick airs exhaust, can guarantee again that the atmospheric pressure in the tunnel is stable, and realize stable oxygen suppliment.
Description
Technical Field
The utility model relates to the field of tunnel construction equipment, in particular to a ventilation and oxygen supply system for high-altitude tunnel construction.
Background
At present, during construction of an existing high-altitude tunnel, ventilation is usually performed in the tunnel only through a ventilation device, the ventilation time is long in the mode, and insufficient oxygen supply is easily caused in the tunnel in a high-altitude area.
In view of this, the present application is specifically made.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a ventilation and oxygen supply system for high-altitude tunnel construction, which can obstruct an inner cavity of a tunnel, enable the interior of the tunnel to be in a closed state, quickly exhaust air, ensure stable air pressure in the tunnel and realize stable oxygen supply.
The embodiment of the utility model is realized by the following steps:
the utility model provides a high altitude tunnel construction ventilation oxygen system, includes: the sealing module is arranged in the tunnel and used for sealing the inner cavity of the tunnel so as to form a closed working cavity between the sealing module and the tunnel face of the tunnel; the ventilation pressurizing module is used for conveying a fresh air source into the working cavity; the dust removal module is used for discharging dust in the working cavity out of the working cavity.
Further, high altitude tunnel construction ventilation oxygen system still includes the oxygen suppliment module, and the oxygen suppliment module communicates with the working chamber for provide oxygen for the working chamber.
Furthermore, the ventilation and oxygen supply system for high-altitude tunnel construction further comprises a main control module, and the ventilation pressurizing module, the sealing module, the dust removal module and the oxygen supply module are respectively in communication connection with the main control module.
Furthermore, the oxygen supply module comprises an oxygen generator set, an oxygen pipeline and a control mechanism, wherein the oxygen generator set is arranged at the opening of the tunnel, one end of the oxygen pipeline is connected with the output end of the oxygen generator set, and the other end of the oxygen pipeline extends into the working cavity so as to increase the oxygen concentration in the working cavity; the control mechanism is connected with the oxygen generator set and is used for controlling the oxygen supply flow of the oxygen generator set.
Further, the oxygen supply module also comprises a pressure adjusting mechanism for adjusting the oxygen supply pressure of the oxygen generator set so that oxygen can smoothly reach the working cavity.
Further, one end of the oxygen pipeline, which is far away from the oxygen generator set, is provided with a dispersion mechanism so that oxygen is uniformly dispersed in the working cavity.
Furthermore, the sealing module comprises a physical curtain mechanism and an air curtain mechanism, the physical curtain mechanism and the air curtain mechanism are both arranged at the position of the two-lining trolley, and the physical curtain mechanism and the air curtain mechanism are positioned on the same section so as to seal the inner cavity of the tunnel.
Furthermore, the ventilation pressurizing module comprises a ventilation host and an air supply pipe, the ventilation host is arranged outside the tunnel, one end of the air supply pipe is connected with the output end of the ventilation host, and the other end of the air supply pipe extends to the working cavity.
The embodiment of the utility model has the beneficial effects that:
the ventilation and oxygen supply system for the high-altitude tunnel construction provided by the embodiment of the utility model can utilize the sealing module to seal the inner cavity of the tunnel to form a sealed working cavity, workers carry out construction in the working cavity, the ventilation and pressurization module is utilized to provide sufficient fresh air source for the working cavity, and during construction in a high-altitude area, the ventilation and oxygen supply system can make up pressure difference in the working cavity and ensure that the pressure in the working cavity is the lowest air pressure standard of normal operation and life; in addition, utilize the dust removal module can be when tunnel face blasting construction, the quick dust discharge with the work intracavity to, can adjust the speed of dust removal module, guarantee that the radiating time after the blasting is the same with dust removal time, thereby can avoid additionally increasing refrigeration plant.
Through the design, the traditional open environment can be changed into a closed environment, so that the stability of the pressure intensity in the working cavity is effectively guaranteed, the content of dust in the working cavity is effectively guaranteed, the comfort of tunnel construction can be greatly improved, and the tunnel construction device can be greatly suitable for high-altitude areas.
In general, the ventilation and oxygen supply system for high-altitude tunnel construction provided by the embodiment of the utility model can block the inner cavity of the tunnel, so that the inside of the tunnel is in a closed state, air can be quickly exhausted, the air pressure in the tunnel can be ensured to be stable, and stable oxygen supply can be realized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram provided in an embodiment of the present invention.
Icon: 1-physical curtain mechanism, 2-air curtain mechanism, 3-ventilation host machine, 4-blast pipe, 5-dust removal module, 6-working chamber, 7-oxygen generator set, 8-oxygen pipeline, 9-control mechanism, 10-pressure regulating mechanism, 11-dispersion mechanism and 12-two-lining trolley.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "parallel," "perpendicular," and the like do not require that the components be absolutely parallel or perpendicular, but may be slightly inclined. For example, "parallel" merely means that the directions are more parallel relative to "perpendicular," and does not mean that the structures are necessarily perfectly parallel, but may be slightly tilted.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Examples
Referring to fig. 1, the present embodiment provides a ventilation and oxygen supply system for high-altitude tunnel construction, including: the device comprises a physical curtain mechanism 1, an air curtain mechanism 2, a ventilation main machine 3, an air supply pipe 4, a dust removal module 5, a working cavity 6, an oxygen generator set 7, an oxygen pipeline 8, a control mechanism 9, a pressure adjusting mechanism 10, a dispersion mechanism 11 and a two-lining trolley 12.
The sealing module is arranged in the tunnel and used for sealing the inner cavity of the tunnel so as to form a closed working cavity 6 between the sealing module and the tunnel face of the tunnel; the ventilation pressurizing module is used for conveying a fresh air source into the working cavity 6; the dust extraction module 5 is used to remove dust from the working chamber 6 out of the working chamber 6.
It should be noted that in this embodiment, the sealing module is disposed at the position of the two-lining trolley 12, and can seal the inner cavity of the tunnel, so that the two-lining trolley 12 forms the sealed working chamber 6 between the tunnel faces.
The tunnel inner cavity can be sealed by the sealing module to form a working cavity 6, workers can carry out construction in the working cavity 6, the ventilation and pressurization module is used for providing sufficient fresh air source for the working cavity 6, and in the construction in a high altitude area, the pressure difference can be made up for the working cavity 6, so that the pressure in the working cavity 6 is ensured to be the lowest air pressure standard of normal operation and life; in addition, utilize dust removal module 5 can be when tunnel face blasting construction, the quick dust with in the working chamber 6 discharges to, can adjust dust removal module 5's speed, guarantee that the radiating time after the blasting is the same with dust removal time, thereby can avoid additionally increasing refrigeration plant.
Through the design, can change traditional open environment into closed to the effectual stability of having guaranteed pressure in the working chamber 6, and the content of the dust in the working chamber 6, improvement tunnel construction's that can be very big travelling comfort, and, can very big be applicable to high altitude area tunnel construction.
In general, the ventilation and oxygen supply system for high-altitude tunnel construction provided by the embodiment of the utility model can block the inner cavity of the tunnel, so that the inside of the tunnel is in a closed state, air can be quickly exhausted, the air pressure in the tunnel can be ensured to be stable, and stable oxygen supply can be realized.
Further, in order to ensure that sufficient oxygen is present in the working chamber 6 during construction in high altitude areas; in this embodiment, an oxygen supply module is specially added, and the oxygen supply module is communicated with the working chamber 6 and used for supplying oxygen to the working chamber 6.
Specifically, the oxygen supply module comprises an oxygen generator set 7, an oxygen pipeline 8 and a control mechanism 9, the oxygen generator set 7 is arranged at the opening of the tunnel, one end of the oxygen pipeline 8 is connected with the output end of the oxygen generator set 7, and the other end of the oxygen pipeline extends into the working cavity 6 to increase the oxygen concentration in the working cavity 6; the control mechanism 9 is connected with the oxygen generator set 7 and is used for controlling the oxygen supply flow of the oxygen generator set 7.
In this embodiment, the oxygen generator set 7 is further provided with a pressure adjusting mechanism 10 for adjusting the oxygen supply pressure of the oxygen generator set 7, so that oxygen can smoothly reach the working chamber 6.
In addition, one end of the oxygen pipeline 8, which is far away from the oxygen generator set 7, is provided with a dispersion mechanism 11 so as to uniformly disperse oxygen in the working chamber 6.
Wherein, oxygenerator group 7 adopts medical molecular sieve oxygenerator group 7, and the one-tenth oxygen (being greater than or equal to 93% +/-3% oxygen content) of oxygenerator group 7 production carries to two lining platform trucks 12 positions through oxygen pipeline 8, can be with the even arrangement of a plurality of dispersion mechanisms 11 on two lining platform trucks 12 cross-sections in actual installation to guarantee the homogeneity of oxygen suppliment.
In this embodiment, the oxygen pipeline 8 is made of a medical grade 304 stainless steel pipe, and the tail end of the oxygen pipeline is communicated with the dispersion mechanism 11 of the two-lining trolley 12 through a hose.
In this embodiment, the pressure regulating mechanism 10 can adjust the oxygen intake according to the length of the oxygen pipeline (generally, the pressure in the high altitude area can be increased to 1Mpa-1.3 Mpa). The pressure adjustment mechanism 10 may be of conventional prior art construction and will not be described in detail herein.
In this embodiment, the dispersion mechanism 11 may adopt various implementation manners such as a conventional atomizing nozzle.
In this embodiment, the control mechanism 9 can adopt a pressure control and valve control mode to control the flow and velocity of the oxygen terminal, so that the oxygen can be uniformly dispersed.
Further, the sealing module comprises a physical curtain mechanism 1 and an air curtain mechanism 2, the physical curtain mechanism 1 and the air curtain mechanism 2 are both arranged at the position of the two-lining trolley 12, and the physical curtain mechanism 1 and the air curtain mechanism 2 are positioned on the same cross section to seal the inner cavity of the tunnel.
Specifically, the physical curtain mechanism 1 is in the form of a conventional rubber sealing door curtain in the prior art, and the size of the physical curtain is the same as that of the inner cavity of the tunnel at the position of the two-lining trolley 12, so that complete sealing is ensured.
The air curtain mechanism 2 can adopt the form of an air curtain machine in the prior art, and the high-speed motor drives the strong airflow generated by the through-flow or centrifugal wind wheel to form the air purification equipment with an invisible door curtain.
Through the combination of the physical curtain mechanism 1 and the air curtain mechanism 2, the position of the two-lining trolley 12 can be sealed, so that the working cavity 6 can be completely sealed. In the actual installation process, the air curtain machine provides a high-pressure air source by using an air compressor arranged on the secondary lining trolley 12, and the spraying height of the air curtain can be determined according to the actual tunnel height, so that the relative balance pressure of 1500 m of the altitude and the atmospheric pressure is achieved in the working cavity 6.
Further, ventilation pressurizing module includes ventilation host computer 3 and blast pipe 4, and ventilation host computer 3 locates outside the tunnel, and blast pipe 4 one end is connected with ventilation host computer 3's output, and the other end extends to working chamber 6.
Wherein, the ventilation host 3 adopts an axial flow fan 2X 110 KW-2X AL16-110, and the diameter of the impeller is 1.6 meters. The ventilation main machine 3 is arranged outside the tunnel, and a pressurized fresh air source is conveyed into the working cavity 6 through the blast pipe 4 by using a blower.
In addition, in the embodiment, the dust removing mechanism adopts dust removing fans, the power of each of the two dust removing fans is 2X 15KW, and the dust removing capacity of each dust removing fan is 600m3Min; two dust removal fans are arranged on the left side and the right side of the two lining trolleys 12 or the extension structure, so that the weight is kept balanced.
After blasting, operating a dust removal fan to remove dust in the sealed space, and removing dust and harmful gas generated by blasting; 99.9% of dust with a particle diameter of 2.5um (PM2.5) can be discharged by the dust removal fan, so that the PM2.5 index of the discharged air reaches an excellent standard.
In addition, in the actual work progress again, can calculate radiating time and the dust removal time after the blasting, with radiating time and dust removal time adjustment for unanimity to do not need additionally to increase refrigeration plant and cool down in the working chamber 6, very big saving the cost.
Further, in order to conveniently and uniformly control the ventilation main machine 3, the air curtain machine, the oxygen generator unit 7 and the dust removal fan, a main control module is specially added in the embodiment, the main control module can be installed in a control chamber of the two-lining trolley 12, and shares the same operation interface with the two-lining trolley 12, so that control in the control chamber of the two-lining trolley 12 can be realized, and the control mode is conventional prior art and is not repeated herein.
The integrated system combines the advanced ventilation concept, the perfect and novel oxygen supply scheme and the rapid dust removal method, thereby ensuring the normalization of the respiration of workers on the dead-space working surface of the high-altitude large tunnel, ensuring the safety and providing powerful support for establishing the unified ventilation and oxygen supply technical standard for the tunnel construction industry.
In conclusion, the utility model can obstruct the inner cavity of the tunnel, so that the inside of the tunnel is in a closed state, air can be exhausted quickly, the air pressure in the tunnel can be ensured to be stable, and stable oxygen supply is realized.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a high altitude tunnel construction ventilation oxygen system which characterized in that includes:
the sealing module is arranged in the tunnel and used for sealing the inner cavity of the tunnel so as to form a closed working cavity between the sealing module and the tunnel face of the tunnel;
the ventilation pressurizing module is used for conveying a fresh air source into the working cavity; and
and the dust removal module is used for discharging dust in the working cavity out of the working cavity.
2. The ventilation and oxygen supply system of claim 1, further comprising an oxygen supply module in communication with the working chamber for supplying oxygen to the working chamber.
3. The ventilation and oxygen supply system of claim 2, wherein the ventilation and pressurization module, the sealing module, the dust removal module and the oxygen supply module are respectively in communication connection with a main control module.
4. The ventilation and oxygen supply system of claim 2, wherein the oxygen supply module comprises an oxygen generator set, an oxygen pipeline and a control mechanism, the oxygen generator set is arranged at the opening of the tunnel, one end of the oxygen pipeline is connected with the output end of the oxygen generator set, and the other end of the oxygen pipeline extends into the working cavity to increase the oxygen concentration in the working cavity; the control mechanism is connected with the oxygen generator set and is used for controlling the oxygen supply flow of the oxygen generator set.
5. The ventilation and oxygen supply system of claim 4, wherein the oxygen supply module further comprises a pressure regulating mechanism for regulating the oxygen supply pressure of the oxygen generator set so that oxygen can smoothly reach the working chamber.
6. The ventilation and oxygen supply system of claim 4, wherein a dispersion mechanism is disposed at an end of the oxygen pipeline away from the oxygen generator set to uniformly disperse oxygen in the working chamber.
7. The ventilation and oxygen supply system of claim 1, wherein the sealing module comprises a physical curtain mechanism and an air curtain mechanism, the physical curtain mechanism and the air curtain mechanism are both disposed at a two-lining trolley, and the physical curtain mechanism and the air curtain mechanism are located at the same cross section to seal the tunnel cavity.
8. The ventilation and oxygen supply system of claim 1, wherein the ventilation and pressurization module comprises a ventilation main machine and an air supply pipe, the ventilation main machine is arranged outside the tunnel, one end of the air supply pipe is connected with the output end of the ventilation main machine, and the other end of the air supply pipe extends to the working cavity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120745546.5U CN215718895U (en) | 2021-04-13 | 2021-04-13 | Ventilation and oxygen supply system for high-altitude tunnel construction |
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| CN202120745546.5U CN215718895U (en) | 2021-04-13 | 2021-04-13 | Ventilation and oxygen supply system for high-altitude tunnel construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116085028A (en) * | 2023-04-13 | 2023-05-09 | 山西工程技术学院 | Tunnel ventilation control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116085028A (en) * | 2023-04-13 | 2023-05-09 | 山西工程技术学院 | Tunnel ventilation control system |
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