CN113586120A - Combined hot air jet heat preservation device for cold region tunnel and control method - Google Patents
Combined hot air jet heat preservation device for cold region tunnel and control method Download PDFInfo
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- CN113586120A CN113586120A CN202111011657.4A CN202111011657A CN113586120A CN 113586120 A CN113586120 A CN 113586120A CN 202111011657 A CN202111011657 A CN 202111011657A CN 113586120 A CN113586120 A CN 113586120A
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- 238000004321 preservation Methods 0.000 title claims abstract description 130
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 85
- 239000010959 steel Substances 0.000 claims abstract description 85
- 238000010438 heat treatment Methods 0.000 claims abstract description 38
- 238000009413 insulation Methods 0.000 claims description 12
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- 238000005265 energy consumption Methods 0.000 abstract description 3
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- 238000007710 freezing Methods 0.000 description 6
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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
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
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- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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Abstract
The invention discloses a combined hot air jet heat preservation device for a cold region tunnel and a control method, and belongs to the field of cold region tunnel heat preservation equipment. The cold-proof heat-preservation type steel structure frame of the device is arranged at the entrance end of a tunnel and is closed with the tunnel entrance; the exhaust fan is arranged at the rear end of the cold-proof heat-preservation type steel structure frame; the jet fans are arranged on the two sides of the front end of the cold-proof heat-preservation type steel structure frame and the top of the middle of the cold-proof heat-preservation type steel structure frame; the air heating sheets are uniformly arranged inside the cold-proof heat-preservation type steel structure frame; the exhaust fan sucks external air into the cold-proof heat-preservation steel structure frame, and the cold-proof heat-preservation steel structure frame passes through the air heating sheet and is conveyed to the tunnel portal through the jet fan to form a hot air curtain; the control device controls the ultrasonic wind speed and direction monitor, the infrared temperature monitor, the exhaust fan, the air heating sheet and the jet fan to be connected. The invention is convenient to install, can effectively reduce the operation energy consumption of the heat preservation device under the condition of ensuring that the tunnel is not frozen, and has high intelligent degree and high energy utilization rate; and can provide the effect of remote early warning.
Description
Technical Field
The invention discloses a combined hot air jet heat preservation device for a cold region tunnel and a control method, and belongs to the field of cold region tunnel heat preservation equipment.
Background
Along with the continuous expansion of railway construction scale in China, the quantity of railway tunnels constructed in severe cold areas is more and more, and according to incomplete statistics, the length of the tunnel located in the severe cold area currently under construction and to be constructed for operation exceeds 1000 kilometers. Because the temperature in winter in the regions is low, the underground water of partial tunnels is abundant, the construction condition is poor, the engineering management difficulty is high, and if the design or construction of cold-proof engineering measures is not in place, the freezing injury is easily formed. And once the tunnel is frozen, the difficulty of renovation is quite large, the renovation cost is quite high, and some diseases even form lifelong diseases. In the last few years, tunnel freezing injuries occur to different degrees from Yining to Yier Shi railway, from Baihe to Longdao and the like which just start to go on, particularly, in partial tunnel engineering of the Yiyi railway, deep-buried drain pipes which are more than 3 meters below an inverted arch are all frozen, lining frost heaving, cracking and dropping blocks are formed, the ballast bed is accumulated with ice, driving safety is seriously affected, and great loss is brought to railway operation.
The investigation on the freeze injury of newly built tunnels and existing tunnels at home and abroad discovers that the freeze injury of the tunnels causes frost heaving of linings because water freezes and expands in volume in a closed space, and the formation of the frost heaving of the linings needs to meet the following three conditions: firstly, there is an ambient temperature below zero; secondly, a water source for freezing and migration is provided; and thirdly, a relatively closed space environment is formed. In other words, solving one of the three conditions can solve the problem of tunnel freeze injury. According to investigation, the water leakage problem exists in the tunnel close to 1/3 in China, and the phenomenon of 'ten tunnels and nine leaks' exists in the industry, so the water leakage problem of the tunnel is difficult to solve; the tunnel lining structure is a compact structure, so that a closed space environment is difficult to avoid. In conclusion, the optimal method for solving the problem of the tunnel freezing injury is to solve the environmental temperature.
At present, the anti-freezing heat preservation measure generally adopted in China is to lay a heat preservation layer, and carry out cold-proof heat preservation on a lining by a method of isolating external cold airflow from a tunnel lining, but the laid heat preservation layer has a certain application range and is not suitable for all cold region tunnels, the heat preservation layer is exposed in the external cold air for a long time, the heat preservation layer is easy to lose efficacy under the long-term freezing and thawing environment condition of extreme temperature, the pressure and the economic burden of tunnel maintenance are greatly increased, and therefore, the combined type hot air jet heat preservation device is researched to become the development direction of the heat preservation work of the cold region tunnel in the future.
The Chinese patent with the application number of CN201910280412.8 discloses a novel cold region tunnel portal front-end heat preservation system device and a control method thereof, wherein the novel cold region tunnel portal front-end heat preservation system device comprises a heat preservation chamber, an air curtain machine, a circulating heating type pipeline device, a solar panel, a snow sweeping device and a control device; the heat preservation chamber is arranged on the outer side of the opening at the front end of the tunnel; the circulating heating type pipeline device is arranged on the left side and the right side close to the opening end in the heat preservation chamber; the solar panel is laid on the top of the heat preservation chamber and is electrically connected with the circulating heating type pipeline device; the snow sweeping device is fixedly arranged on the solar panel, and the solar panel is provided with a pressure sensor; the control device comprises a controller and a power supply; the air curtain machine, the circulating heating type pipeline device, the solar panel, the snow sweeping device and the pressure sensor are respectively and electrically connected with the control device. The device needs to build the concrete heat preservation room in the tunnel front end, through the external wind of air curtain machine separation, heats the air through heating formula pipeline, though can solve the tunnel freeze injury problem, but its energy consumption is very big, the whole expense is high, adaptability is poor, the construction cycle is long, only is applicable to the tunnel in operation to be not applicable to the tunnel construction, can not reach satisfied effect to cold district tunnel actual engineering application effect.
Disclosure of Invention
The invention provides a combined hot air jet heat preservation device for a cold region tunnel and a control method.
The invention adopts the following technical scheme:
the invention relates to a combined hot air jet flow heat preservation device for a tunnel in a cold region, which comprises a cold-proof heat preservation type steel structure frame, an exhaust fan, an air heating sheet, a jet flow fan, an ultrasonic wind speed and direction monitor, an infrared temperature monitor and a control device, wherein the cold-proof heat preservation type steel structure frame is provided with a heat insulation plate;
the cold-proof heat-preservation type steel structure frame is arranged at the entrance end of the tunnel and is closed with the tunnel entrance;
the exhaust fan is arranged at the rear end of the cold-proof heat-preservation type steel structure frame; the jet fans are arranged on the two sides of the front end of the cold-proof heat-preservation type steel structure frame and the top of the middle of the cold-proof heat-preservation type steel structure frame; the air outlets of the jet fans positioned at the two sides of the front end of the cold-proof heat-preservation type steel structure frame are oppositely arranged, and the air outlet of the jet fan positioned at the top of the middle of the cold-proof heat-preservation type steel structure frame is downwards arranged; the air heating sheets are uniformly arranged inside the cold-proof heat-preservation type steel structure frame;
the exhaust fan sucks external air into the cold-proof heat-preservation steel structure frame, and the cold-proof heat-preservation steel structure frame passes through the air heating sheet and is conveyed to the tunnel portal through the jet fan to form a hot air curtain;
the top of the front end and the top of the rear end of the cold-proof heat-preservation type steel structure frame are both provided with an ultrasonic wind speed and direction monitor and an infrared temperature monitor;
the control device is arranged on the cold-proof heat-preservation type steel structure framework, and a signal input end of the control device is connected with an ultrasonic wind speed and direction monitor and an infrared temperature monitor; the signal output end of the control device is connected with the exhaust fan, the air heating sheet and the jet fan.
The invention relates to a combined hot air jet flow heat preservation device for a cold region tunnel, wherein a cold-proof heat preservation type steel structure frame consists of a steel structure frame, an anticorrosive coating, a waterproof layer and a heat preservation layer; the outer side of the steel structure frame is sequentially provided with an anti-corrosion coating, a waterproof layer and a heat preservation layer.
The invention relates to a combined hot air jet heat preservation device for a cold region tunnel.A steel structure frame is provided with a jet nozzle and an exhaust inlet; the jet nozzle is provided with a jet fan; an exhaust fan is arranged at the suction port; the exhaust fan is fixedly connected with the steel structure.
According to the combined hot air jet heat insulation device for the cold region tunnel, the air heating sheet is arranged inside the steel structure.
According to the combined hot air jet heat preservation device for the cold region tunnel, the tops of the inlet and the outlet of the steel structure frame are provided with the ultrasonic wind speed and direction monitor.
According to the combined hot air jet heat preservation device for the cold region tunnel, the infrared temperature monitor is arranged at the top of the inlet and the outlet of the steel structure frame.
According to the combined hot air jet heat insulation device for the cold region tunnel, the jet angle of the jet fans positioned on the two sides of the front end of the cold-proof heat insulation type steel structure frame is 45 degrees; the jet angle of the jet fan positioned at the middle top of the cold-proof heat-preservation type steel structure frame is 30 degrees.
The combined hot air jet heat preservation device for the cold region tunnel comprises a plurality of cold-proof heat preservation type steel structure frames which contain exhaust fans, air heating sheets and jet fans, and are combined to form a multi-group hot air jet heat preservation device.
A control method of a combined hot air jet heat preservation device of a cold region tunnel comprises the following control steps:
s1: the control device collects the external wind speed, direction and temperature through the front-end ultrasonic wind speed and direction monitor and the infrared temperature monitor, collects the wind speed, direction and temperature at the rear end of the frame structure through the rear-end ultrasonic wind speed and direction monitor and the infrared temperature monitor, and transmits data to the control device in real time;
s2: the control device controls the opening and closing of the exhaust fan and the jet flow fan according to the acquired data, and adjusts the heating temperature of the air heating sheet; monitoring the wind speed, the wind direction and the temperature of the front end and the rear end of the structural device in real time;
s3: when the rear end sensor of the combined hot air jet heat preservation device in full-power operation monitors that surrounding rocks at the opening of the tunnel are lower than the early warning temperature for a long time or the combined hot air jet heat preservation device is abnormal in operation, the control device remotely sends out early warning.
The invention relates to a control method of a combined hot air jet heat preservation device for a tunnel in a cold region, which judges whether the hot air jet heat preservation device needs to be started or not by adopting wind speed, wind direction and temperature information obtained by a sound wave wind speed and wind direction monitor and an infrared temperature monitor;
and controlling the jet speed of the jet fan according to the wind speed of the external cold airflow, wherein the jet speed is controlled to be 4-5 times of the wind speed of the external airflow, and the jet speed is 20 m/s.
Advantageous effects
The combined hot air jet flow heat preservation device for the cold region tunnel provided by the invention is characterized in that a cold-proof heat preservation type steel structure framework is adopted to build the combined tunnel heat preservation device, and compared with a heat supply device positioned in the tunnel, the cold-proof heat preservation type steel structure framework is provided with a hole, so that the cold-proof heat preservation type tunnel heat preservation device has the advantages of low requirement on site, convenience in installation, low overall cost, intelligence and high efficiency.
According to the combined hot air jet heat preservation device for the tunnel in the cold region, the adopted monitoring and control equipment is matched with each other, the wind speed and direction and the temperature monitor are used for carrying out data monitoring on the external environment and the environment in the tunnel, the operation energy consumption of the heat preservation device is effectively reduced under the condition that the tunnel is not frozen, the intelligent degree is high, and the energy utilization rate is high; and can provide the effect of remote early warning.
According to the control method of the combined hot air jet heat preservation device for the cold region tunnel, provided by the invention, when the control device detects that the temperature of surrounding rock at the opening of the tunnel is lower than the early warning temperature after the heat preservation device runs at full power and a sensor monitors that the surrounding rock at the opening of the tunnel is lower than the early warning temperature for a long time, the control device remotely sends out early warning to remind related personnel that 1 or more groups of combined hot air jet heat preservation devices for the cold region tunnel can be additionally arranged at the front end of the existing heat preservation device.
Drawings
FIG. 1 is a schematic perspective view of a combined hot air jet insulation device for a cold region tunnel and a tunnel according to the present invention;
FIG. 2 is a schematic view of the assembled installation of the combined hot air jet heat preservation device for the cold region tunnel according to the present invention;
FIG. 3 is a material composition diagram of a cold-proof heat-preservation type steel structure frame of the combined hot air jet heat preservation device for the cold region tunnel provided by the invention;
FIG. 4 is a control flow chart of the combined hot air jet heat preservation device for cold region tunnels provided by the invention;
in the figure: 1. a tunnel; 2. the ultrasonic wind speed and direction monitor and the infrared temperature monitor group; 3. an upward-feeding jet fan; 4. a cold-proof heat-preservation type steel structure frame; 5. an air heating sheet; 6. a jet fan; 7. an exhaust fan; 8. a control device; a. special steel plates; b. an anti-corrosion coating; c. a waterproof layer; d. and (7) an insulating layer.
Detailed Description
In order to make the purpose and technical solution of the embodiments of the present invention clearer, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
As shown in fig. 1 to 3, the combined hot air jet heat preservation device for a cold region tunnel provided by the invention comprises a cold-proof heat preservation type steel structure frame 4, an exhaust fan 7, an air heating plate 5, a jet fan 6, an ultrasonic wind speed and direction monitor, an infrared temperature monitor 2 and a control device 8;
the cold-proof heat preservation type steel structure frame 4 is arranged at the inlet end of the tunnel 1 and is closed with the tunnel entrance;
the exhaust fan 7 is arranged at the rear end of the cold-proof heat-preservation type steel structure frame 4; the jet fans 6 are arranged on the two sides of the front end and the top of the middle of the cold-proof heat-preservation type steel structure frame 4; the air outlets of the jet fans 6 positioned at the two sides of the front end of the cold-proof heat-preservation type steel structure frame are oppositely arranged, and the air outlet of the jet fan 6 positioned at the top of the middle of the cold-proof heat-preservation type steel structure frame is downwards arranged; the air heating plates 5 are uniformly arranged inside the cold-proof heat-preservation type steel structure frame;
the exhaust fan 7 sucks external air into the cold-proof heat preservation type steel structure frame 4, and the cold-proof heat preservation type steel structure frame is conveyed to a tunnel entrance through the jet fan 7 after passing through the air heating sheet 5 to form a hot air curtain;
the top of the front end and the top of the rear end of the cold-proof heat-preservation type steel structure frame are both provided with an ultrasonic wind speed and direction monitor and an infrared temperature monitor 2;
the control device is arranged on the cold-proof heat-preservation type steel structure framework, and a signal input end of the control device is connected with the ultrasonic wind speed and direction monitor and the infrared temperature monitor; the signal output end of the control device 8 is connected with the exhaust fan 7, the air heating sheet 5 and the jet fan 6.
The cold-proof heat-preservation type steel structure frame 4 comprises a special steel plate a, an anticorrosive coating b, a waterproof layer c and a heat preservation layer d; the cold-proof heat preservation type steel structure frame 4 is made of special steel plates and grows as follows: width: high =5 m: 14 m: the hollow steel structure frame is 10m and 0.5m thick, and an anti-corrosion coating b, a waterproof layer c and a heat preservation layer d are respectively applied to the outer part of the steel structure frame to ensure that the steel structure is not corroded and damaged and ensure that air heated in the steel structure does not exchange heat with the outside; the parallel exhaust fan 7 is used for extracting air to supply air quantity for the upward-feeding type jet fan 3 and the parallel side-feeding type jet fan 6, and the extracted air is mainly mixed air flow of the jet fan and external cold air flow entering the tunnel; the air heating sheet 5 is arranged in the cold-proof heat-preservation type steel structure frame 4 at a certain distance and used for heating the outside air extracted by the parallel type exhaust fan 7 and providing a hot air source for the parallel side-feeding type jet fan 6 and the upper-feeding type jet fan 3; parallelly connected formula efflux fan 6 fixed mounting is in the cold-proof heat preservation formula steel construction frame 4 front end both sides, efflux fan efflux angle is fixed 45, strong efflux through both sides carries out heat convection with the cold air current that invades in the tunnel, in order to reach the separation or reduce external air current wind speed, increase the purpose of air current temperature, efflux fan efflux angle is fixed 30, strong efflux separation through the top or reduce parallelly connected formula efflux fan 6 of sending and fail the isolated external air current rather than the air current, in order to reach the separation or reduce the air current speed of air current mixture, increase the purpose of air current temperature.
The control device 8 is used for controlling the running state and early warning of the heat preservation device, when the ultrasonic wind speed and direction monitor and the infrared temperature monitor group 2 monitor that the airflow flows from the inside of the tunnel to the outside of the tunnel, all the devices are closed, when the ultrasonic wind speed and direction monitor and the infrared temperature monitor group 2 monitor that the external cold air invades the inside of the tunnel, all the devices are opened, meanwhile, the jet speed of the parallel side-feeding type jet fan 6 and the upper-feeding type jet fan 3 is controlled according to the external wind speed, the running power of the air heating sheet 5 is controlled according to the external temperature, and when the combined type hot air jet heat preservation device runs at the full-power rear end sensor for a long time and monitors that the surrounding rock of the tunnel opening is lower than the early warning temperature or the combined type hot air jet heat preservation device runs abnormally, the control device remotely sends out the early warning.
As shown in fig. 4, an ultrasonic wind speed and direction monitor and infrared temperature monitor group 2; an upward-feeding type jet fan 3; the cold-proof heat preservation type steel structure frame 4 comprises a special steel plate a; an anticorrosive coating b; a waterproof layer c; a heat-insulating layer d; an air heating sheet 5; a parallel side-feeding jet fan 6; the parallel exhaust fans 7 are all electrically connected with a control device 8.
A control method of a combined hot air jet heat preservation device of a cold region tunnel comprises the following operations:
a first group of ultrasonic wind speed and direction monitors and an infrared temperature monitor group at the front end of the cold-proof heat-preservation type steel structure frame 4, and a second group of ultrasonic wind speed and direction monitors and an infrared temperature monitor group 2 at the rear end of the cold-proof heat-preservation type steel structure frame 4 respectively collect the wind speed and direction and temperature outside the tunnel, the wind speed and direction in the tunnel and the temperature of surrounding rock air, and determine the conditions of the wind speed, the wind direction and the temperature of airflow in front of and behind the cold-proof heat-preservation type steel structure frame 4; the data are transmitted to a control device in real time, the control device controls the working states of an upper feeding type jet fan 3, an air heating sheet 5, a parallel side feeding type jet fan 6 and a parallel exhaust fan 7 according to the data monitored by an ultrasonic wind speed and direction monitor and an infrared temperature monitor group 2, and when the air flow flows from the inside of the tunnel to the outside of the tunnel, a heat preservation device is closed;
when the air flow flows to the tunnel hole outside the tunnel hole, all the devices are started and the heating power of the air heating plate 5 is controlled according to the external air temperature condition; when the control device 8 detects that the temperature of the tunnel 1 opening is lower than the early warning temperature or the combined hot air jet heat preservation device runs abnormally after all the devices run at full power, a remote early warning is sent to relevant personnel.
In the invention, the jet speed regulation range of the upper feeding type jet fan 3 and the parallel side feeding type jet fan 6 is 10-30 m/s, the jet thickness is 0.3 m, the interval between the upper feeding type jet fan 3 and the parallel side feeding type jet fan 6 is 2 m, and the air temperature range of the air heating plate 5 in the structural frame is 30-60 degrees; the upper feeding type jet fan 3 and the parallel side feeding type jet fan 6 are of customized models so as to fit different tunnel conditions; the air heating sheet 5 is a borre (HRYC) type finned tube sheath air heater; the ultrasonic wind speed and direction monitor is a wind path (FT-WQX 2) type ultrasonic wind speed and direction monitor; the infrared temperature monitor is a cloud-invasive (PI 160) type infrared temperature monitor.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a combination formula hot-air efflux heat preservation device in cold district tunnel which characterized in that: comprises a cold-proof heat preservation type steel structure frame, an exhaust fan, an air heating sheet, a jet flow fan, an ultrasonic wind speed and direction monitor, an infrared temperature monitor and a control device;
the cold-proof heat-preservation type steel structure frame is arranged at the entrance end of the tunnel and is closed with the tunnel entrance;
the exhaust fan is arranged at the rear end of the cold-proof heat-preservation type steel structure frame; the jet fans are arranged on the two sides of the front end of the cold-proof heat-preservation type steel structure frame and the top of the middle of the cold-proof heat-preservation type steel structure frame; the air outlets of the jet fans positioned at the two sides of the front end of the cold-proof heat-preservation type steel structure frame are oppositely arranged, and the air outlet of the jet fan positioned at the top of the middle of the cold-proof heat-preservation type steel structure frame is downwards arranged; the air heating sheets are uniformly arranged inside the cold-proof heat-preservation type steel structure frame;
the exhaust fan sucks external air into the cold-proof heat-preservation steel structure frame, and the cold-proof heat-preservation steel structure frame passes through the air heating sheet and is conveyed to the tunnel portal through the jet fan to form a hot air curtain;
the top of the front end and the top of the rear end of the cold-proof heat-preservation type steel structure frame are both provided with an ultrasonic wind speed and direction monitor and an infrared temperature monitor;
the control device is arranged on the cold-proof heat-preservation type steel structure framework, and a signal input end of the control device is connected with an ultrasonic wind speed and direction monitor and an infrared temperature monitor; the signal output end of the control device is connected with the exhaust fan, the air heating sheet and the jet fan.
2. The combined hot air jet insulation device for cold region tunnels according to claim 1, characterized in that: the cold-proof heat preservation type steel structure frame consists of a steel structure frame, an anticorrosive coating, a waterproof layer and a heat preservation layer; the outer side of the steel structure frame is sequentially provided with an anti-corrosion coating, a waterproof layer and a heat preservation layer.
3. The combined hot air jet insulation device for cold region tunnels according to claim 1 or 2, characterized in that: the steel structure frame is provided with a jet flow nozzle and an air suction opening; the jet nozzle is provided with a jet fan; an exhaust fan is arranged at the suction port; the exhaust fan is fixedly connected with the steel structure.
4. The combined hot air jet insulation device for cold region tunnels according to claim 1 or 2, characterized in that: the air heating plate is arranged inside the steel structure.
5. The combined hot air jet insulation device for cold region tunnels according to claim 1 or 2, characterized in that: and ultrasonic wind speed and direction monitors are arranged at the top of the inlet and the outlet of the steel structure frame.
6. The combined hot air jet insulation device for cold region tunnels according to claim 1 or 2, characterized in that: and infrared temperature monitors are arranged at the top of the inlet and the outlet of the steel structure frame.
7. The combined hot air jet insulation device for cold region tunnels according to claim 1, characterized in that: the jet angle of the jet fans positioned on the two sides of the front end of the cold-proof heat-preservation type steel structure frame is 45 degrees; the jet angle of the jet fan positioned at the middle top of the cold-proof heat-preservation type steel structure frame is 30 degrees.
8. The combined hot air jet insulation device for cold region tunnels according to claim 1, characterized in that: a plurality of cold-proof heat preservation type steel structure frames containing exhaust fans, air heating sheets and jet fans are combined to form a multi-group type hot air jet heat preservation device.
9. A control method of a combined hot air jet heat preservation device of a cold region tunnel is characterized in that: the control steps are as follows:
s1: the control device collects the external wind speed, direction and temperature through the front-end ultrasonic wind speed and direction monitor and the infrared temperature monitor, collects the wind speed, direction and temperature at the rear end of the frame structure through the rear-end ultrasonic wind speed and direction monitor and the infrared temperature monitor, and transmits data to the control device in real time;
s2: the control device controls the opening and closing of the exhaust fan and the jet flow fan according to the acquired data, and adjusts the heating temperature of the air heating sheet; monitoring the wind speed, the wind direction and the temperature of the front end and the rear end of the structural device in real time;
s3: when the rear end sensor of the combined hot air jet heat preservation device in full-power operation monitors that surrounding rocks at the opening of the tunnel are lower than the early warning temperature for a long time or the combined hot air jet heat preservation device is abnormal in operation, the control device remotely sends out early warning.
10. The method for controlling the combined hot air jet heat preservation device for the cold region tunnel according to claim 9, wherein the method comprises the following steps: judging whether the hot air jet heat preservation device needs to be started or not by acquiring the wind speed, the wind direction and the temperature information obtained by the sound wave wind speed and wind direction monitor and the infrared temperature monitor;
and controlling the jet speed of the jet fan according to the wind speed of the external cold airflow, wherein the jet speed is controlled to be 4-5 times of the wind speed of the external airflow, and the maximum value of the jet wind speed is 20 m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111011657.4A CN113586120A (en) | 2021-08-31 | 2021-08-31 | Combined hot air jet heat preservation device for cold region tunnel and control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111011657.4A CN113586120A (en) | 2021-08-31 | 2021-08-31 | Combined hot air jet heat preservation device for cold region tunnel and control method |
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| CN113586120A true CN113586120A (en) | 2021-11-02 |
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| CN202111011657.4A Pending CN113586120A (en) | 2021-08-31 | 2021-08-31 | Combined hot air jet heat preservation device for cold region tunnel and control method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114033421A (en) * | 2021-11-22 | 2022-02-11 | 中国科学院西北生态环境资源研究院 | Tunnel supporting system capable of preventing frost heaving damage and construction method |
| CN114235633A (en) * | 2021-11-30 | 2022-03-25 | 淮阴工学院 | Model test method for measuring tunnel air curtain running track and performance thereof |
| CN115110578A (en) * | 2022-07-15 | 2022-09-27 | 中铁十九局集团第三工程有限公司 | Electric control type positive accumulated temperature flow guide open cut tunnel structure for tunnel in seasonal frozen region and regulation and control method |
| CN115217150A (en) * | 2022-07-15 | 2022-10-21 | 中铁十九局集团第三工程有限公司 | Suspension type positive accumulated temperature diversion open cut tunnel structure for tunnel in seasonal frozen region, and installation and regulation and control method |
| CN116227007A (en) * | 2023-05-09 | 2023-06-06 | 中国铁路经济规划研究院有限公司 | Cold-region tunnel cold-proof analysis method and device and cold-region tunnel heat preservation system |
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- 2021-08-31 CN CN202111011657.4A patent/CN113586120A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114033421A (en) * | 2021-11-22 | 2022-02-11 | 中国科学院西北生态环境资源研究院 | Tunnel supporting system capable of preventing frost heaving damage and construction method |
| CN114033421B (en) * | 2021-11-22 | 2022-07-12 | 中国科学院西北生态环境资源研究院 | Tunnel supporting system capable of preventing frost heaving damage and construction method |
| CN114235633A (en) * | 2021-11-30 | 2022-03-25 | 淮阴工学院 | Model test method for measuring tunnel air curtain running track and performance thereof |
| CN114235633B (en) * | 2021-11-30 | 2024-05-14 | 淮阴工学院 | Model test method for measuring tunnel air curtain running track and performance thereof |
| CN115110578A (en) * | 2022-07-15 | 2022-09-27 | 中铁十九局集团第三工程有限公司 | Electric control type positive accumulated temperature flow guide open cut tunnel structure for tunnel in seasonal frozen region and regulation and control method |
| CN115217150A (en) * | 2022-07-15 | 2022-10-21 | 中铁十九局集团第三工程有限公司 | Suspension type positive accumulated temperature diversion open cut tunnel structure for tunnel in seasonal frozen region, and installation and regulation and control method |
| CN115217150B (en) * | 2022-07-15 | 2024-04-12 | 中铁十九局集团第三工程有限公司 | Tunnel suspension type positive accumulation temperature diversion open cut tunnel structure in quaternary frozen area, installation and regulation method |
| CN115110578B (en) * | 2022-07-15 | 2024-04-12 | 中铁十九局集团第三工程有限公司 | Electric control type positive accumulation temperature diversion open cut tunnel structure of tunnel in quaternary freezing area and regulation and control method |
| CN116227007A (en) * | 2023-05-09 | 2023-06-06 | 中国铁路经济规划研究院有限公司 | Cold-region tunnel cold-proof analysis method and device and cold-region tunnel heat preservation system |
| CN116227007B (en) * | 2023-05-09 | 2023-08-08 | 中国铁路经济规划研究院有限公司 | Cold-region tunnel cold-proof analysis method and device and cold-region tunnel heat preservation system |
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