CN110966035A - Movable tunnel local ventilation refrigeration equipment - Google Patents
Movable tunnel local ventilation refrigeration equipment Download PDFInfo
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- CN110966035A CN110966035A CN201911398156.9A CN201911398156A CN110966035A CN 110966035 A CN110966035 A CN 110966035A CN 201911398156 A CN201911398156 A CN 201911398156A CN 110966035 A CN110966035 A CN 110966035A
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- 238000009423 ventilation Methods 0.000 title claims abstract description 52
- 238000005057 refrigeration Methods 0.000 title claims abstract description 40
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 62
- 239000001301 oxygen Substances 0.000 claims abstract description 62
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 62
- 239000007789 gas Substances 0.000 claims abstract description 17
- 238000005273 aeration Methods 0.000 claims abstract description 3
- 239000003507 refrigerant Substances 0.000 claims description 22
- 238000001514 detection method Methods 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 6
- 238000009412 basement excavation Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 230000008016 vaporization Effects 0.000 claims description 3
- 239000002274 desiccant Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 10
- 238000006213 oxygenation reaction Methods 0.000 abstract description 5
- 230000036541 health Effects 0.000 abstract description 4
- 206010021143 Hypoxia Diseases 0.000 abstract description 3
- 208000027418 Wounds and injury Diseases 0.000 abstract description 3
- 230000006378 damage Effects 0.000 abstract description 3
- 208000014674 injury Diseases 0.000 abstract description 3
- 101100494448 Caenorhabditis elegans cab-1 gene Proteins 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- E21F3/00—Cooling or drying of air
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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
- E21F1/003—Ventilation of traffic tunnels
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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
- E21F11/00—Rescue devices or other safety devices, e.g. safety chambers or escape ways
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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)
- Business, Economics & Management (AREA)
- Health & Medical Sciences (AREA)
- Emergency Management (AREA)
- Pulmonology (AREA)
- Ventilation (AREA)
Abstract
The invention discloses a movable tunnel local ventilation refrigeration device, which comprises a walking device, wherein the walking device is provided with: the refrigerating device is used for adjusting the temperature of the local area of the tunnel working surface to realize refrigeration; a ventilation system connected to the refrigeration apparatus for introducing gas into the refrigeration apparatus; and an oxygen supply apparatus coupled to the aeration system for adding oxygen to the gas stream. Above-mentioned portable tunnel local ventilation refrigeration plant can integrate narrow and small space fast moving, the quick refrigeration of big amount of wind and the function of the quick oxygenation of semi-enclosed space to can provide comfortable operational environment for the staff, not only can reduce and avoid even leading to the condition that the staff health received the injury because high temperature and oxygen deficiency, but also can improve the efficiency of tunnel construction.
Description
Technical Field
The invention relates to the technical field of tunnel construction, in particular to a movable tunnel local ventilation refrigeration device.
Background
At present, the number of railway tunnel construction projects in China is large, the problems of encountered geological conditions are various, and a great difficulty is brought to construction due to a plurality of geological condition problems. The temperature in the tunnel can reach more than 45 ℃ under the high geothermal environment, and constructors basically cannot work under the high-temperature environment; however, the means for cooling the interior of the tunnel is very limited and the effect is not good, and the current domestic solutions are mostly to enhance the ventilation of the tunnel and to transport ice blocks into the tunnel. When the tunnel is longer, strengthen the tunnel ventilation and need the power of fold increase fan equipment and the quantity of tuber pipe, nevertheless because the ambient temperature is higher in the tunnel, cold wind has not arrived the working face and just has been heated, and the cooling effect is relatively poor. In addition, some construction units transport ice blocks to the tunnel to cool, but the heat absorbed by the ice blocks in the tunnel is slow, and an ideal cooling effect cannot be achieved.
Therefore, how to avoid the influence on the health of the workers and the reduction of the working efficiency caused by the fact that the local area of the tunnel working surface cannot meet the requirements of the workers on the working environment is a technical problem which needs to be solved by the technicians in the field at present.
Disclosure of Invention
The invention aims to provide a movable tunnel local ventilation refrigeration device which can reduce the temperature of a local area of a tunnel working face, so as to provide a comfortable working environment for workers and further improve the working efficiency of high-geothermal tunnel construction.
In order to achieve the purpose, the invention provides a mobile tunnel local ventilation refrigeration device, which comprises a walking device, wherein the walking device is provided with:
the refrigerating device is used for adjusting the temperature of the local area of the tunnel working surface to realize refrigeration;
a ventilation system connected to the refrigeration apparatus for introducing gas into the refrigeration apparatus;
and an oxygen supply apparatus coupled to the aeration system for adding oxygen to the gas stream.
Optionally, the refrigeration device comprises:
a compressor for compressing a refrigerant gas;
a condenser connected to the compressor for liquefying the compressed refrigerant gas;
the drying filter is connected with the condenser and used for drying and filtering the liquid refrigerant;
and the evaporator is connected with the drying filter and used for gasifying the liquid refrigerant to realize refrigeration.
Optionally, the ventilation system comprises:
a fan for introducing high temperature air into the evaporator;
the soft air duct is arranged between the fan and the evaporator and used for preventing the mechanical vibration generated by the fan from being transmitted to the evaporator.
Optionally, the evaporator comprises:
a main body;
the air inlet is arranged at the first end of the main body and connected with the soft air cylinder;
and the air outlet is arranged at the second end of the main body and used for facing the tunnel excavation surface.
Optionally, the evaporator is further provided with:
the first temperature detection device is used for detecting the temperature of the air flow at the air inlet;
and the second temperature detection device is used for detecting the temperature of the air flow at the air outlet.
Optionally, the air conditioner further comprises a display part connected with the first temperature detection device and the second temperature detection device and used for displaying the air temperature of the air inlet and the air temperature of the air outlet.
Optionally, the oxygen supply apparatus comprises:
an oxygen tank for storing oxygen;
and the mixer is connected with the fan through a ventilation pipeline and is used for adding the oxygen in the oxygen tank into the airflow.
Optionally, the dry filter and the evaporator are connected by a connecting pipe, and the connecting pipe is connected with:
an expansion valve for controlling the flow rate of the liquid refrigerant in the connecting pipe;
the stop valve is used for controlling the on-off of the connecting pipeline and manually controlling the flow.
Optionally, the walking device comprises:
a chassis for carrying the refrigeration device, the ventilation system and the oxygen supply device;
the cab is arranged at the head of the chassis;
and the power system is arranged below the cab and used for providing driving force to enable the chassis to walk.
Optionally, the tail end of the chassis is further provided with a power distribution cabinet for supplying power.
Compared with the prior art, the invention designs the mobile tunnel local ventilation refrigeration equipment aiming at different requirements of tunnel construction, and particularly, the mobile tunnel local ventilation refrigeration equipment comprises a walking device, the walking device has the capability of autonomous movement, and the walking device is provided with: the system comprises a refrigerating device, a ventilation system and an oxygen supply device, wherein the refrigerating device is used for adjusting the temperature of a local area of a tunnel working face so as to meet the refrigerating requirement; the ventilation system is connected with the refrigerating device and used for introducing high-temperature mixed gas into the refrigerating device so as to prepare low-temperature airflow by the refrigerating device; the oxygen supply device is connected with the ventilation system and is used for adding oxygen into the airflow. Therefore, above-mentioned portable tunnel local ventilation refrigeration plant can integrate at narrow and small space fast moving, the function of the quick oxygenation of big amount of wind quick refrigeration and semi-enclosed space, thereby can make tunnel working face local area temperature descend rapidly, and can mix the high velocity air current of oxygen and big amount of wind, so that the oxygen content everywhere of working face is more abundant, thereby can provide comfortable operational environment for the staff, not only can reduce and avoid even leading to the staff health to receive the condition of injury because high temperature and oxygen deficiency, but also can improve the efficiency of tunnel construction.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a mobile tunnel local ventilation refrigeration device according to an embodiment of the present invention;
fig. 2 is a working schematic diagram of a refrigerating device, a ventilating system and an oxygen supply device in the mobile tunnel local ventilation refrigerating equipment disclosed by the embodiment of the invention.
Wherein:
the system comprises a cab 1, a power system 2, a compressor 3, an electric cabinet 4, a condenser 5, a chassis 6, an oxygen tank 7, a power distribution cabinet 8, an evaporator 9, a first temperature detection device 91, a second temperature detection device 92, a pressure detection device 93, a soft air duct 10, a fan 11, a mixer 12, a drying filter 13, an expansion valve 14 and a stop valve 15.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
The core of the invention is to provide a movable tunnel local ventilation refrigeration device which can reduce the temperature of a local area of a tunnel working surface, thereby providing a comfortable working environment for workers and further improving the working efficiency of high geothermal tunnel construction.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
It should be noted that the following directional terms such as "upper end, lower end, left side, right side" and the like are defined based on the drawings of the specification.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a mobile tunnel local ventilation cooling device according to an embodiment of the present invention; fig. 2 is a working schematic diagram of a refrigerating device, a ventilating system and an oxygen supply device in the mobile tunnel local ventilation refrigerating equipment disclosed by the embodiment of the invention.
The mobile tunnel local ventilation refrigeration equipment provided by the embodiment of the invention comprises a walking device, a refrigeration device, a ventilation system and an oxygen supply device, wherein the walking device has the capability of autonomous movement, and the refrigeration device, the ventilation system and the oxygen supply device are all arranged on the walking device; the refrigerating device is used for adjusting the temperature of a local area of the working surface of the tunnel so as to realize the refrigerating requirement; the ventilation system is connected with the refrigerating device and is used for introducing high-temperature mixed gas (air and high-purity oxygen) into the refrigerating device so as to prepare low-temperature airflow by the refrigerating device; the oxygen supply device is connected with the ventilation system and is used for adding oxygen into the airflow.
Therefore, above-mentioned portable tunnel local ventilation refrigeration plant can integrate at narrow and small space fast moving, the function of the quick oxygenation of big amount of wind quick refrigeration and semi-enclosed space, thereby can make tunnel working face local area temperature descend rapidly, and can mix the high velocity air current of oxygen and big amount of wind, so that the oxygen content everywhere of working face is more abundant, thereby can provide comfortable operational environment for the staff, not only can reduce and avoid even leading to the staff health to receive the condition of injury because high temperature and oxygen deficiency, but also can improve the efficiency of tunnel construction.
Of course, according to actual needs, the refrigeration device may be specifically configured to include the evaporator 9, so that the function of reducing the ambient temperature can be achieved by vaporizing and absorbing heat in the evaporator 9 through the refrigerant, and compared with the traditional cooling method through direct water cooling, the configuration method can greatly improve the heat exchange efficiency; in addition, equipment is through setting up the apparatus of oxygen supply, the apparatus of oxygen supply links to each other with ventilation system, through ventilation system's effect, can mix high-purity oxygen in heat transfer air current, can realize oxygen and big amount of wind promptly, high velocity air mixes, thereby can make the everywhere oxygen content of working face more even and abundant, can provide comfortable operational environment for the constructor at tunnel working face work like this, adopt external oxygen hose to the fixed point formula oxygen suppliment mode of working face oxygen suppliment for the tradition, the apparatus of oxygen supply of this application can solve because the fixed point formula oxygen suppliment leads to everywhere uneven problem of oxygen content distribution, and can effectively solve through the apparatus of oxygen supply because the condition of the unable effective oxygenation of part personnel that tunnel staff leads to more dispersion.
Further, the walking device may specifically be configured to include: the system comprises a chassis 6, a cab 1 and a power system 2, wherein the chassis 6 is used as a carrier and has the main functions of bearing a refrigerating device, a ventilation system and an oxygen supply device, and the chassis 6 can also realize the functions of walking and braking; the cab 1 is arranged at the head position of the chassis 6 and mainly has the function of controlling the chassis 6 to run; the power system 2 is arranged below the cab 1, the power system 2 is used for providing driving force for the chassis 6 to walk autonomously, and the power system 2 can comprise an engine and accessories thereof.
Therefore, compared with a traditional device unpowered mechanism, the device cannot move independently, a special traction vehicle is required to be equipped in the actual working process, the working cost is increased, the mobility of the device is reduced, and the walking device can be rapidly moved in a narrow space in a tunnel to reach a specified position for refrigeration and oxygenation.
Specifically, the refrigeration device may specifically include: the compressor 3, the condenser 5, the drying filter 13 and the evaporator 9, and the refrigerating device are mounted on the chassis 6, and mainly function to exchange heat in high-speed airflow into external cooling water and transfer heat in the tunnel to the outside of the tunnel by the external cooling water. Wherein, the compressor 3 can be driven by a motor to compress a low-pressure refrigerant gas into a high-pressure refrigerant gas (the high-pressure gas is more easily liquefied); the condenser 5 is connected with the compressor 3, and the condenser 5 is used for liquefying the compressed refrigerant gas to obtain liquid refrigerant; the drying filter 13 is connected with the condenser 5, the drying filter 13 is used for drying and filtering the liquid refrigerant, the liquid refrigerant enters the evaporator 9 after being dried and filtered by the drying filter 13, the evaporator 9 is connected with the drying filter 13, and the liquid refrigerant is gasified and absorbs heat in the evaporator 9 to take away heat in high-speed airflow, so that the aim of refrigeration is fulfilled.
In order to ensure stable input of the air flow, a ventilation system is connected to an air inlet of the evaporator 9, and the ventilation system may be configured to include a fan 11 and a soft air cylinder 10, wherein the soft air cylinder 10 is disposed between the fan 11 and the evaporator 9 and connected to the fan 11 and the evaporator 9, the soft air cylinder 10 mainly functions to prevent mechanical vibration generated when the fan 11 operates from being transmitted to the evaporator 9, and the fan 11 mainly functions to form a local low pressure to introduce high-temperature air into the evaporator 9.
In addition, the evaporator 9 may specifically include a main body for vaporizing the liquid refrigerant; the first end of the main body is provided with an air inlet which is connected with the soft air cylinder 10; the second end of main part is equipped with the air exit, and the air exit is used for towards the tunnel excavation face. The air outlet has a large area, not only can provide a large amount of cooling air, but also can increase oxygen to each part of the working surface of the tunnel, so that the oxygen content of each part of the working surface is more uniform and abundant.
The evaporator 9 may further be provided with a first temperature detection device 91 for detecting the temperature of the air flow at the air inlet of the evaporator 9 and a second temperature detection device 92 for detecting the temperature of the air flow at the air outlet of the evaporator 9. Of course, a pressure detection device 93 for detecting pressure may also be disposed at the air inlet, and the temperature detection device may be specifically configured as a temperature sensor, and the pressure detection device 93 may be specifically configured as a pressure sensor.
In addition, in order to facilitate observing the real-time temperature of the air flow at the air inlet and the air outlet of the evaporator 9, the device may further include a display unit, the display unit is connected to the first temperature detection device 91 and the second temperature detection device 92, and the display unit is configured to display the temperature of the air inlet and the air outlet of the evaporator 9, for example, the display unit may be specifically configured as a temperature control meter or a temperature display screen with an operation program; the temperature control meter can comprise a corresponding operation module inside, and the operation module can perform operation processing on the temperature signal transmitted by the temperature sensor so as to display corresponding numbers. The friction test device that the temperature control table is often found in prior art for to the heating temperature real-time supervision of sample piece, the setting of temperature control table can refer to prior art, and here will no longer expand one by one.
In order to ensure sufficient oxygen supply, the oxygen supply device may specifically include an oxygen tank 7 for storing oxygen and a mixer 12 for adding the oxygen in the oxygen tank 7 to the gas flow, wherein the oxygen tank 7 may be replaced by a chemical oxygen generator or several oxygen bottles; the mixer 12 is connected to the fan 11 through a ventilation duct. That is to say, the pure oxygen of equipment adds the point and is located 11 air intakes of fan department, and like this, through the stirring effect of 11 impellers of fan, oxygen mixes with big amount of wind, high velocity air, can make all places oxygen content of working face more even, abundant.
In order to optimize the above embodiment, the above dry filter 13 and the evaporator 9 may be connected by a connecting pipe, and the connecting pipe may be connected with an expansion valve 14 and a stop valve 15, wherein the stop valve 15 is used for controlling the on-off of the connecting pipe and manually controlling the flow rate; the expansion valve 14 is used for controlling the flow of the liquid refrigerant in the connecting pipeline, and the flow of the liquid refrigerant in the expansion valve 14 corresponds to the exhaust air temperature in the evaporator 9, that is, on the premise of ensuring the stable input of the high-temperature air flow, the flow of the liquid refrigerant is properly increased, so that the exhaust air temperature in the evaporator 9 is lower.
Of course, according to actual needs, a controller connected to the expansion valve 14 and capable of controlling the opening degree of the expansion valve 14 may be provided, the controller is connected to a temperature detection unit/device, the temperature detection unit/device is capable of detecting the temperature of the air flow at the air outlet of the evaporator 9 in real time so as to transmit a temperature signal to the controller in real time, and the controller may perform a function of adjusting the opening degree of the expansion valve 14 according to the temperature signal. This enables intelligent control of the expansion valve 14.
On the basis, the equipment can also be provided with a corresponding electrical system, the electrical system mainly comprises an electric cabinet 4, a power distribution cabinet 8 and corresponding accessories, the electric cabinet 4 is used for controlling a compressor 3, a fan 11 and low-voltage components in the equipment, and certainly, the controller can be arranged in an electric cabinet 14; the power distribution cabinet 8 plays a role in power distribution and control of high-voltage electric equipment. Of course, the electric cabinet 4 can be arranged below the chassis 6, and the power distribution cabinet 8 can be arranged at the tail end of the chassis 6.
In this way, a driver drives the equipment into the tunnel through the cab 1, an air outlet of the evaporator 9 faces the tunnel excavation surface, and then the quick connector is connected with high voltage electricity to start the working mode; after the working mode is started, the fan 11 and the refrigerating device start to operate, the oxygen tank 7 is opened, the fan 11 can send a large amount of high-temperature airflow and high-purity oxygen into the evaporator 9 for cooling, and then the low-temperature airflow containing enough oxygen is discharged from the evaporator 9 and blown to a working surface.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The mobile tunnel local ventilation refrigeration equipment provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a portable tunnel local ventilation refrigeration plant which characterized in that, includes running gear, the last:
the refrigerating device is used for adjusting the temperature of the local area of the tunnel working surface to realize refrigeration;
a ventilation system connected to the refrigeration apparatus for introducing gas into the refrigeration apparatus;
and an oxygen supply apparatus coupled to the aeration system for adding oxygen to the gas stream.
2. The mobile tunnel local ventilation cooling apparatus of claim 1, wherein the cooling device comprises:
a compressor (3) for compressing a refrigerant gas;
a condenser (5) connected to the compressor (3) for liquefying the compressed refrigerant gas;
a drying filter (13) connected to the condenser (5) for drying and filtering the liquid refrigerant;
an evaporator (9) connected to the desiccant filter (13) for vaporizing the liquid refrigerant to effect refrigeration.
3. The mobile tunnel local ventilation cooling apparatus of claim 2, wherein the ventilation system comprises:
a fan (11) for introducing high-temperature air into the evaporator (9);
and the soft air cylinder (10) is arranged between the fan (11) and the evaporator (9) and is used for preventing the mechanical vibration generated by the fan (11) from being transmitted to the evaporator (9).
4. Mobile tunnel local ventilation cooling device according to claim 3, characterized in that said evaporator (9) comprises:
a main body;
the air inlet is arranged at the first end of the main body and connected with the soft air cylinder (10);
and the air outlet is arranged at the second end of the main body and used for facing the tunnel excavation surface.
5. The mobile tunnel local ventilation cooling device according to claim 4, wherein the evaporator (9) is further provided with:
a first temperature detecting means (91) for detecting the temperature of the air flow at the air inlet;
and a second temperature detecting device (92) for detecting the temperature of the air flow at the air outlet.
6. The local ventilation cooling device for the mobile tunnel according to claim 5, further comprising a display part connected to the first temperature detection device (91) and the second temperature detection device (92) for displaying the air flow temperature of the air inlet and the air flow temperature of the air outlet.
7. The mobile tunnel local ventilation cooling device of claim 6, wherein the oxygen supply device comprises:
an oxygen tank (7) for storing oxygen;
and the mixer (12) is connected with the fan (11) through a ventilation pipeline and is used for adding the oxygen in the oxygen tank (7) into the air flow.
8. Mobile tunnel local ventilation cooling device according to any of claims 2 to 7, characterized in that said dry filter (13) and said evaporator (9) are connected by means of a connecting duct, to which are connected:
an expansion valve (14) for controlling the flow of liquid refrigerant in the connecting pipe;
and the stop valve (15) is used for controlling the on-off of the connecting pipeline and manually controlling the flow.
9. The mobile tunnel local ventilation cooling apparatus of claim 8, wherein the walking means comprises:
a chassis (6) for carrying the refrigeration device, the ventilation system and the oxygen supply device;
a cab (1) provided at the head of the chassis (6);
and the power system (2) is arranged below the cab (1) and used for providing driving force to enable the chassis (6) to walk.
10. Mobile tunnel local ventilation refrigeration plant according to claim 9, characterized in that the tail end of the chassis (6) is further provided with a power distribution cabinet (8) for power supply.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911398156.9A CN110966035A (en) | 2019-12-30 | 2019-12-30 | Movable tunnel local ventilation refrigeration equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911398156.9A CN110966035A (en) | 2019-12-30 | 2019-12-30 | Movable tunnel local ventilation refrigeration equipment |
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| CN110966035A true CN110966035A (en) | 2020-04-07 |
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| CN201911398156.9A Pending CN110966035A (en) | 2019-12-30 | 2019-12-30 | Movable tunnel local ventilation refrigeration equipment |
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| CN111853985A (en) * | 2020-07-16 | 2020-10-30 | 中南大学 | Local artificial oxygenation device and method |
| CN114109467A (en) * | 2021-12-06 | 2022-03-01 | 中铁隧道集团一处有限公司 | Tunnel construction comprehensive ventilation system and control method |
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