CN216922196U

CN216922196U - Tunnel cooling system

Info

Publication number: CN216922196U
Application number: CN202123033445.4U
Authority: CN
Inventors: 邹丽; 张宇航; 俞梦捷; 葛伟; 王军
Original assignee: Shanghai Tongtai Fire & Security Technology Co ltd
Current assignee: Shanghai Tongtai Fire & Security Technology Co ltd
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-07-08
Anticipated expiration: 2031-12-03

Abstract

The utility model belongs to the technical field of tunnel environment regulation and relates to a tunnel temperature regulation system. The utility model provides a tunnel cooling system, includes water supply system and the mist cooling system of setting in the tunnel, mist cooling system and water supply system intercommunication, mist cooling system comprises a plurality of mutually independent spraying unit, when the temperature in the tunnel surpassed the threshold value, spraying unit opens, reduces the temperature in the tunnel through water mist, still includes the multiunit fan that tunnel upper portion set up and the temperature and humidity sensor of setting in the tunnel, and mist cooling system includes pipeline and a plurality of high-pressure water mist nozzles above that. High-pressure water mist has the effect of efficient heat absorption and cooling, when the temperature exceeds 42 ℃, the fan and the mist cooling system are started, the water mist sprayed by the mist cooling system is diffused into the tunnel under the effect of the fan, the diffusion range is wide, the cooling effect is good, and the safety of driving personnel, tunnel maintenance personnel, vehicles and structures in the tunnel is effectively guaranteed.

Description

Tunnel cooling system

Technical Field

The utility model belongs to the technical field of tunnel environment regulation and relates to a tunnel temperature regulation system.

Background

The research on the deep land field not only includes exploration and development of mineral resources and energy resources in the deep part of the earth, but also the safe utilization of urban space, which promotes the generation of a plurality of deep underground engineering and tunnel engineering. With the improvement of the technical level of railway traffic construction in China, in order to solve the pressure on traffic, environment and the like caused by the relative concentration of population movement and employment points and meet the current environment and situation change requirements of the country, the construction of various tunnels and underground engineering has become a necessary trend. The development of tunnel engineering is beneficial to fully developing homeland resources, has important significance in crossing obstacles, improving highway linetype, saving occupied land and saving engineering investment, and particularly has great advantages in building short tunnels of highway tunnels in mountain areas.

Tunnels are engineering structures buried in the ground and are a form of human use of underground space. The tunnel temperature is related to the natural temperature of the stratum, the heat dissipation of the travelling crane, the illumination in the tunnel and the heat dissipation of the auxiliary machinery, and the heat dissipation of the maintenance personnel in the tunnel raises the temperature in the tunnel, and particularly in summer, the tunnel temperature can reach over 42 ℃. The high-temperature tunnel not only can bring injury to personnel such as driving personnel, maintenance and repair, but also can increase the fault rate of vehicles. Therefore, it is very important to cool the tunnel. The high-pressure water mist cooling system belongs to an open system, and compared with the high-pressure water mist open (fire extinguishing) system, the high-pressure water mist cooling system has smaller nozzle flow and droplet diameter and very large specific surface area, so the high-pressure water mist cooling system has very high evaporation speed, and the cooling efficiency greatly exceeds the traditional modes of water and wind power exchange and the like, thereby being the best choice for cooling.

SUMMERY OF THE UTILITY MODEL

The utility model provides a tunnel cooling system, which aims to play a role in reducing the space temperature of a tunnel under the condition that the existing tunnel is high in temperature due to a large amount of heat accumulated under the influence of environmental change so as to eliminate the harm of the high temperature to drivers and vehicles.

The purpose of the utility model can be realized by the following technical scheme:

the tunnel cooling system comprises a water supply system and a spraying system arranged in a tunnel, wherein the spraying system is communicated with the water supply system, and the tunnel cooling system is characterized in that the spraying system comprises a plurality of spraying units which are arranged in the upper space of the tunnel and are mutually independent, when the temperature in the tunnel exceeds a threshold value, the spraying units are opened, and the sprayed water mist reduces the temperature in the tunnel.

Optionally, the mist unit produces a mist having a droplet accumulation distribution dv0.99<85 μm.

Optionally, the water supply system comprises a pump set and a water supply pipeline, the pump set being arranged on the water supply pipeline.

Optionally, the water supply pipeline includes trunk line and a plurality of branch pipelines with the trunk line intercommunication, branch pipeline all lays along tunnel extending direction.

Optionally, the spraying units are arranged at intervals along the length direction of the branch pipes, and a plurality of spraying units are arranged on different branch pipes.

Optionally, the spraying unit includes at least one water pipe and a plurality of spraying pipes communicated with the water pipe, the water pipe is communicated with the branch pipes, a plurality of high-pressure water mist nozzles are uniformly distributed on the spraying pipes, and the spraying pipes are horizontally arranged on the upper portion of the tunnel.

Optionally, one or more fans are arranged between the adjacent spraying units, and the fans are arranged at the upper part of the tunnel unit; the central position of the air outlet of the fan and the spray head on the spraying unit are positioned on the same horizontal plane.

Optionally, the spraying unit further comprises a valve box, and a second control valve and a filter which are installed on the water delivery pipe are arranged in the valve box.

Optionally, the branch pipeline is further provided with a first control valve, a check valve, a plurality of high-pressure maintenance valves and a plurality of emptying valves, and the first control valve is arranged at a position close to the connection position of the branch pipeline and the main pipeline.

Optionally, the branch pipe is composed of a plurality of rigid pipes and a plurality of high-pressure hoses which are alternately connected.

Optionally, the spraying system further comprises a temperature and humidity sensor arranged in the tunnel, and the temperature and humidity sensor is electrically connected with the pump unit, the valve box and the fan.

Due to the adoption of the technical scheme, the beneficial effects obtained by the utility model comprise:

according to the tunnel cooling system based on the high-pressure water mist technology, the high-pressure water mist has the efficient heat absorption and cooling effects, the cooling system is reliable in structure and excellent in use performance, the real-time temperature in the tunnel is monitored in real time through the temperature and humidity monitor, when the temperature exceeds 42 ℃, the temperature monitor is in linkage with the open valve box and the fan nearby opened, the water mist pressurized through the power unit is diffused into the tunnel under the action of the fan, the diffusion range is wide, the cooling effect is good, and the safety of driving personnel, tunnel maintenance personnel and vehicles in the high-temperature tunnel is effectively guaranteed.

Drawings

Fig. 1 is a schematic view of the arrangement of the present invention.

FIG. 2 is a cross-sectional view of the present invention in a tunnel

In the figure: 1. a pump group; 2. a ball valve; 3. a high pressure service valve; 4. a water supply pipeline; 5. a high pressure hose;

6. an evacuation valve; 7. a high pressure water mist spray head; 8. a valve box; 9. a fan; 10. a temperature and humidity detector.

Detailed Description

The utility model will be further described with reference to the accompanying drawings.

Referring to fig. 1-2, the present invention relates to a tunnel cooling system, which is installed at the top of a tunnel, and when the temperature of the tunnel is too high, the cooling system located in a high temperature area sprays water mist to reduce the ambient temperature, thereby preventing the high temperature from affecting the safety of vehicles and people in the tunnel. The air quality in the tunnel is relatively poor, and when a large amount of pollutants and dust are diffused in the air, the tunnel cooling system can also be opened to spray for dust fall and dust suppression, so that the air quality in the tunnel is improved.

A tunnel cooling system comprises a water supply system and a spraying system arranged in a tunnel, wherein the spraying system is connected to the water supply system, and the water supply system supplies water for the spraying system. The spraying system comprises a plurality of mutually independent spraying units which are arranged in the upper space of the tunnel, and when the spraying system works, the spraying system generates water mist with accumulated droplet distribution Dv0.99<85 mu m for cooling the tunnel.

As shown in figure 1, water supply system includes water supply pipe 4, and water supply pipe 4 divide into trunk line and lateral conduit, and the trunk line is connected with municipal pipe network, guarantees the continuous stable water supply of whole cooling system, still is provided with pump package 1 on the trunk line, and pump package 1 comprises nine plunger pumps of high pressure and steady voltage pump for provide and maintain sufficient water pressure for cooling system. As an optional embodiment of the utility model, in a quasi-working state, the pressure stabilizing pump maintains the pressure of a pipe network between the outlet of the pump unit 1 and the valve box 8 at 1.0-1.2 MPa. Still be provided with purifier on the water supply pipe 4, during purifier flowed through earlier in the water supply pipe 4 flows into pump package 1 again to guarantee that the rivers that flow into the water-spraying system are impurity-free, avoid the interior pipeline of water-spraying system to block up. The water purifier can use common membrane filtration equipment or other equipment which has lower use cost and is easy to install.

The branch pipeline is provided with a plurality of, and is a plurality of mutually independent between each other the branch pipeline, and is a plurality of the branch pipeline all communicates with the trunk line, for example uses tee bend to connect trunk line and two branch pipelines.

Control valves are installed at positions, close to the positions where the branch pipelines are connected with the main pipeline, on the branch pipelines, and the overhauling requirements are met. The control valve can be any one of common valves such as a gate valve, a butterfly valve and a ball valve, as long as the selected valve meets the use requirement of a cooling system, and as an optional embodiment of the utility model, the ball valve 2 is adopted as the control valve.

The branch pipes are laid in the tunnel, and can be installed in the tunnel in a concealed way or in an exposed way. Further, considering that the length of the tunnel is long, the branch pipes are arranged along the extending direction of the tunnel, and the length of the branch pipes is adaptive to the length of the tunnel. The pipelines which are laid in an open mode are arranged on supports or supports on two sides of the tunnel, and are arranged in the tunnel for a long time, and due to the reasons of expansion with heat and contraction with cold, vibration in the tunnel, gravity and the like caused by temperature change, the pipelines can be bent and deformed, so that the use is influenced due to the deformation and damage of the pipelines. The branch pipe used in the present invention is composed of a rigid pipe and a flexible pipe, and as a preferred embodiment of the present invention, the branch pipe is composed of a plurality of metal pipes and a plurality of high pressure hoses 5, and the metal pipes and the high pressure hoses 5 are arranged at intervals, for example, two metal pipes spaced by not more than 100 meters are connected by 1 high pressure hose 5.

The rigid pipeline comprises a pipeline which is not easy to deform and has higher water pressure bearing capacity, such as a metal pipeline and a steel-plastic composite pipeline which are commonly used in water supply and drainage engineering. The flexible pipeline includes metal collapsible tube, the water hose that possesses higher water pressure bearing capacity etc. in reasonable within range, can not produce thermal variation because of fluid or medium in the pipeline, perhaps operational environment's temperature variation, the pipeline that leads to is flexible, the inflation to arouse the pipeline that pipeline itself changes and cause pipeline itself to damage.

Still be provided with a plurality of high-pressure service valves 3 and exhaust-valve 6 on the lateral conduit, one high-pressure service valve 3 and one exhaust-valve 6 can control one or more spraying unit, when needs carry out necessary maintenance and maintenance to whole cooling system, can arrange the water storage in the pipeline of cooling system or only arrange the water storage in the pipeline of some spraying unit wherein to the greatest extent to in examining and maintaining the pipeline.

The branch pipeline can be only one, namely, one branch pipeline is directly connected to the main pipeline, or the main pipeline and the branch pipeline share one pipeline, namely, the spraying unit is directly connected to the main pipeline, and water is directly supplied to the spraying unit through the main pipeline.

The spraying system is composed of a plurality of spraying units, different spraying units are independent from each other, each spraying unit comprises a water conveying pipeline and a plurality of spraying pipes which are communicated with the water conveying pipeline and are arranged in parallel, the spraying pipes are fixed in the upper space of the tunnel, and a plurality of spray heads are uniformly distributed on the spraying pipes.

The spray head on the spray pipe adopts a high-pressure water mist spray head 7. The high-pressure water mist nozzle 7 can form water mist with accumulated droplet distribution Dv0.99<85 μm on a plane 1m away from the nozzle under the minimum design working pressure. When the temperature in the tunnel is too high, a large amount of tiny water mist liquid drops generated by the high-pressure water mist spray nozzle 7 can quickly absorb heat to evaporate, so that the rapid cooling in the tunnel is realized. Meanwhile, the diameter of the generated water mist is basically smaller than 85 micrometers, the specific surface area of the atomized liquid drops is smaller, and the water mist is subjected to heat absorption and evaporation in the falling process after being sprayed out, so that the water mist generated during the operation of the cooling system cannot cause adverse effects on vehicles running in the tunnel, cannot cause shielding or interference on the sight of vehicle drivers, and can basically neglect the influence on the road surface of the tunnel, and therefore the cooling system can be safely used in the tunnel. In order to improve the cooling effect, the distance between the adjacent high-pressure water mist nozzles 7 is not more than three times of the spraying radius, and preferably is two times of the spraying radius of the high-pressure water mist nozzles 7.

Mounting brackets may be provided in the tunnel vault for securing the spray pipes, although these spray pipes may also be mounted directly in the tunnel in a suspended manner.

The spraying unit also comprises a valve box 8, each spraying unit is provided with one valve box 8, a valve for controlling the spraying unit is arranged in each valve box 8, the valves are arranged on the water conveying pipes, and the spraying units to which the valve boxes 8 belong can be independently controlled, so that the spraying system can be used more flexibly, and the using efficiency of the spraying system is improved. As a preferred embodiment of the present invention, the high pressure service valve 3 and the evacuation valve 6 on the branch pipe are arranged at the front end of the valve box 8, that is, the water in the pipe flows through the high pressure service valve 3 and the evacuation valve 6 in sequence and then flows through the valve in the valve box 8, so as to facilitate the service of the spray unit.

The valve box 8 is an open system partition control valve, can be automatically started, can be manually started, has a mechanical emergency operation starting function, adopts a manual operation mode to close the control valve, controls one water mist sprayer control unit by each valve box 8, is internally provided with a filter, can select 80-mesh specification, and can be of course other filters meeting the working requirements of the water mist sprayer with other specifications.

As a preferred embodiment of the utility model, each spraying unit at least comprises a water conveying pipeline and three spraying pipes which are arranged in parallel. A plurality of spraying units constitute spraying system jointly, and in order to improve the spraying area, adjacent spraying unit is along the equidistant setting of tunnel extending direction, for example: the distance between adjacent spray units was 90 m.

Except the access & exit at both ends in common tunnel and external air exchange mainly rely on the preset exhaust system in the tunnel, and existing fan 9 can play certain cooling effect, can also guarantee the air exchange in the tunnel, consequently for further improvement cooling effect, install the spraying unit behind existing fan.

The air-out direction of fan 9 is unanimous with the extending direction in tunnel roughly to guarantee the unanimity of air flow direction in the tunnel, improve cooling efficiency, on the other hand the air current that blows out of fan 9 can make the water smoke that the high-pressure water mist sprayer 7 on the spraying unit blew out spread along with the air current that flows, thereby can cover bigger scope, accelerate the evaporation rate of the water mist of high-pressure water mist sprayer 7 spun simultaneously, further increase spraying system's cooling effect. In the vertical direction, the installation position of the fan 9 is not lower than that of the spraying unit, so that the adverse effect on equipment of the fan 9 during spraying operation of the spraying unit is reduced. In the horizontal direction, fan 9 and spraying unit interval set up, and that is to say fan 9 and spraying unit arrange according to fan 9, spraying unit's order promptly, and fan 9 air outlet central point puts and spraying unit on the shower nozzle be in same horizontal plane, ensures the diffusion effect of the thin water smoke of air current that blows out of fan 9 with high-pressure thin water smoke shower nozzle 7 spun. In order to improve the effectiveness of the fan 9 on the spraying action, the fan 9 is horizontally arranged, and the air outlet direction of the fan 9 is also kept on the horizontal plane, so that the air flow blown out by the fan 9 can enable the sprayed water mist to be spread for a longer distance. As a preferred embodiment of the present invention, the number of the fans 9 between the adjacent spraying units is not less than three, the fans 9 are arranged side by side on the same horizontal plane, and the fans 9 are arranged at the position 10m right behind the high-pressure water mist spray head 7 in the horizontal direction. The cooling effect of the water mist sprayed out under the coupling effect of the fan 9 is further improved.

The tunnel cooling system further comprises a temperature and humidity monitor 10, the temperature and humidity monitor 10 is electrically connected with the pump unit 1, the valve box 8 and the fan 9, and when the temperature is too high, the valve box 8, the pump unit 1 and the fan 9 corresponding to the spraying unit are opened in a linkage mode to supply water to the water supply pipeline 4. The temperature and humidity monitor 10 is installed on the top, side wall or other positions in the tunnel to ensure the measurement effect, but the measurement influence of the cooling system on the monitor should be avoided.

The using mode and the working process of the utility model are as follows:

set up the lateral conduit of two sets of symmetries on tunnel upper portion, all set up multiunit spraying unit on two sets of lateral conduits, adjacent spraying unit distance is 90m, and every spraying unit of group includes the spraying pipe of three piece at least parallels, adjacent spraying pipe interval 90m, a plurality of high-pressure water mist spray head 7 of equipartition on every spraying pipe, and the interval of adjacent shower head is 1.5 m. When the temperature inside the tunnel is too high, the temperature and humidity detection device arranged on the inner wall of the tunnel detects that the temperature of the tunnel is higher than 42 ℃, linkage control is carried out, the pump unit 1, the valve box 8 and the fan 9 start to work automatically (nearby personnel can find that the temperature is too high and can also control manually), and water flow is pressurized by the pump unit 1. Pressure rivers pass through water supply pipe 4 and pass through ball valve 2, valve box 8, high-pressure hose 5, high pressure maintenance valve 3, form the spraying through 7 atomizing of high-pressure water mist shower nozzle, a plurality of shower nozzles simultaneous workings, spun water mist is under the effect of fan 9, to the inside diffusion in tunnel, the diffusion wide range, it is effectual to cool down, the inside vehicle personnel of high temperature tunnel, the security of tunnel maintenance personnel and vehicle has been ensured greatly, the system is closed to 35 ℃ when the temperature drops. In spring and autumn, the water spray can be started for 1 minute every half month.

The foregoing description and description of the embodiments are provided to facilitate understanding and application of the utility model by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications can be made to these teachings and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above description and the description of the embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.

Claims

1. The utility model provides a tunnel cooling system, includes water supply system and the water spraying system of setting in the tunnel, water spraying system and water supply system intercommunication, water supply system includes water supply pipe, water supply pipe includes trunk line and a plurality of branch pipeline that communicate with the trunk line, its characterized in that: the spraying system comprises a plurality of spraying units which are arranged in the upper space of the tunnel and are arranged at intervals along the length direction of the branch pipes, each spraying unit comprises at least one water pipe and a plurality of spraying pipes which are communicated with the water pipes, the water pipes are communicated with the branch pipes, and when the temperature in the tunnel exceeds a threshold value, the spraying units are started to spray water mist to reduce the temperature in the tunnel.

2. The tunnel cooling system of claim 1, wherein the mist unit produces a mist droplet accumulation distribution dv0.99<85 μm.

3. The tunnel cooling system of claim 1, wherein the water supply system includes a pump unit disposed on the water supply pipeline.

4. The tunnel cooling system according to claim 1, wherein a plurality of high-pressure water mist nozzles are uniformly distributed on the spray pipes, and the spray pipes are horizontally arranged at the upper part of the tunnel.

5. The tunnel cooling system according to claim 1, wherein one or more fans are arranged between the adjacent spraying units, and the fans are arranged at the upper parts of the tunnel units; the central position of the air outlet of the fan and the spray head on the spraying unit are positioned on the same horizontal plane.

6. The tunnel cooling system according to claim 5, wherein the spraying unit further comprises a valve box, and a second control valve and a filter which are installed on a water delivery pipe are arranged in the valve box.

7. The tunnel cooling system of claim 1, wherein the branch conduit is further provided with a first control valve, a check valve, a plurality of high pressure service valves and a plurality of evacuation valves, the first control valve being disposed adjacent to a location where the branch conduit is connected to the main conduit.

8. The tunnel cooling system according to any one of claims 1 or 7, wherein the branch pipes are composed of a plurality of rigid pipes and a plurality of high-pressure hoses which are alternately connected.

9. The tunnel cooling system of claim 1, further comprising a temperature and humidity sensor disposed in the tunnel, wherein the temperature and humidity sensor is electrically connected to the pump set, the valve box, and the fan.