CN219431891U - Air-out heat preservation device suitable for loess tunnel portal in seasonal cold region - Google Patents

Abstract

The utility model belongs to the technical field of heat preservation of loess tunnels in seasonally cold regions, and discloses an air outlet heat preservation device suitable for openings of loess tunnels in seasonal cold regions. The outer wall of the arch is covered with a thermal insulation room, and the inner wall of the arch frame is equipped with a plurality of hot air blowing devices that are evenly distributed along the arch direction at a position far away from the tunnel opening. The unit is connected to a power supply unit. The utility model has a good effect of preventing freezing damage, is convenient for maintenance and has low maintenance cost.

Description

A kind of heat preservation device for air outlet of loess tunnel opening in seasonal cold area

technical field

The utility model belongs to the technical field of heat preservation of loess tunnels in seasonal cold regions, and in particular relates to an air outlet heat preservation device suitable for openings of loess tunnels in seasonal cold regions.

Background technique

The temperature difference between the inside and outside of the loess tunnel in the seasonally cold region is relatively large. If the tunnel entrance is in a cold environment for a long time, it will cause great harm to the lining structure at the tunnel entrance, which may cause the lining to peel off, affect driving safety and may damage the entire tunnel. In a paralyzed state, resulting in a waste of resources. During the construction of loess tunnels in seasonal cold regions, in order to prevent the occurrence of frost damage, various technical measures are applied to the insulation and antifreeze of tunnels, and the effects are quite different. However, the tunnel entrance section in the cold region has been seriously affected by the harsh climate of low temperature outside, which has caused great harm to the structure of the tunnel entrance.

At present, electric heat tracing systems (EHTs) are used in loess tunnels in seasonal cold regions to prevent freezing damage. To prevent heat loss, heat and insulate the tunnel. Although it has a good anti-freeze damage effect and less investment in the early stage, the aging of the heating cable brings difficulties to the later inspection of the tunnel, and the later operation cost is too high.

Contents of the invention

Aiming at the problems existing in the prior art, the utility model provides an air outlet thermal insulation device suitable for loess tunnel openings in seasonally cold regions, which has a good anti-freezing effect, is easy to maintain and has low maintenance costs.

In order to solve the above technical problems, the utility model is realized through the following technical solutions:

A wind-out thermal insulation device suitable for loess tunnel openings in seasonally cold regions, comprising an arched frame that is closely attached to the end face of the tunnel opening, the outer wall of the arched frame is covered with a heat preservation room, and the inner wall of the arched frame is On the position far away from the tunnel opening, a plurality of blowing hot air devices with blowing outlets facing the tunnel opening are evenly distributed along the arched direction, and the hot air blowing devices are connected with a power supply device.

Further, the power supply device includes a solar panel arranged on the top of the heat preservation chamber, and the solar panel is connected with the hot air blowing device.

Further, the power supply device further includes an electrical storage device arranged on the top of the heat preservation chamber, the electrical storage device is connected to the solar panel, and the electrical storage device is connected to the hot air blowing device.

Further, a heat insulation layer is laid on the top of the heat preservation room, and the solar battery panel and the power storage device are located on the heat insulation layer.

Further, it also includes a control device and a temperature sensor arranged on the inner wall of the arch frame and close to the tunnel opening, the control device and the temperature sensor are both connected to the power supply device, and the control device is respectively It is connected with the hot air blowing device and the temperature sensor.

Further, a temperature alarm is also provided on the inner wall of the arch near the tunnel opening, the temperature alarm is connected to the power supply device, and the temperature alarm is connected to the control device.

Further, the control device is used to compare the temperature collected by the temperature sensor with a plurality of different preset temperature ranges, and control the working power of the hot air blowing device according to the comparison result.

Further, a lighting system is also provided on the inner wall of the arched frame, and the lighting system is connected to the power supply device.

Further, a monitoring system is also provided on the inner wall of the arched frame, and the monitoring system is connected to the power supply device.

Compared with the prior art, the utility model has at least the following beneficial effects:

The utility model provides an air outlet heat preservation device suitable for loess tunnel openings in seasonally cold regions. A section of arch frame is connected to the outside of the end face of the tunnel opening, and the position on the inner wall of the arch frame far away from the tunnel opening is along the arch direction. A plurality of hot air blowing devices with blowing outlets facing the tunnel entrance are evenly distributed. The hot air blowing device is connected to a power supply device. The thermal insulation room on the outer wall of the arched frame prevents the heat loss generated by the hot air blowing device. Compared with the traditional electric heat tracing system to prevent freezing damage, the utility model does not need to bury the heating cable, so the aging of the heating cable will not cause difficulties in the later inspection of the tunnel and the later operation costs will be too high. The utility model adopts the measures of heating and thermal insulation to change the ambient temperature of the tunnel entrance, thereby achieving the effect of thermal insulation and heating at the tunnel entrance section, avoiding the occurrence of tunnel freezing damage caused by changes in local air temperature after the tunnel is completed, and further avoiding The performance of the lining concrete at the tunnel entrance section is reduced, which prevents the tunnel from being damaged in the later operation.

In order to make the above-mentioned purpose, features and advantages of the present invention more comprehensible, preferred embodiments are specifically cited below, together with the accompanying drawings, and are described in detail as follows.

Description of drawings

In order to more clearly illustrate the technical solutions in the specific embodiments of the present invention, the accompanying drawings that need to be used in the description of the specific embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are some of the embodiments of the present invention. Embodiments, for a person of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic diagram of the three-dimensional structure of a loess tunnel opening air outlet heat preservation device suitable for seasonal cold regions provided by the utility model;

Fig. 2 is an elevation view of an air outlet heat preservation device suitable for loess tunnel openings in seasonally cold regions provided by the utility model.

In the figure: 1-control device; 2-arch frame; 3-hot air blowing device; 4-solar panel; 5-electric storage device; 6-heat insulation layer; 7-temperature sensor; 8-temperature alarm; 9 -monitoring system; 10-lighting system; 11-cable; 12-switch; 13-button; 14-display; 15-insulation room; 16-tunnel opening.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model. rather than all examples. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

As a certain specific implementation of the present utility model, as shown in Fig. 1 and Fig. 2, this embodiment provides a kind of air outlet heat preservation device suitable for loess tunnel openings in seasonally cold regions, including a device close to the end face of the tunnel opening 16 The arched frame 2, the outer wall of the arched frame 2 is coated with a heat preservation chamber 15, and the position on the inner wall of the arched frame 2 away from the tunnel opening 16 is evenly distributed along the arch direction with a plurality of blowing outlets facing the tunnel opening 16. The hot air blowing device 3 is connected with a power supply.

Specifically, the arched frame 2 follows the shape of the tunnel, and one end of the arched frame 2 is fixedly installed on the end face of the tunnel opening 16. The heat preservation chamber 15 prevents the loss of heat, and the installation of the hot air blowing device 3 needs to ensure that the safe passage of the vehicle is not affected. Generally, the arched frame 2 at the location of the hot air blowing device 3 is appropriately augmented, so as to ensure that the hot air blowing device 3 will not affect the safe passage of vehicles. After the hot air blowing device 3 is communicated with the power supply unit, a steady stream of hot air is produced by the hot air blowing device 3, and the hot wind is blown to the tunnel opening 16 to heat the tunnel opening 16 to prevent frost damage from occurring in the tunnel opening 16.

Exemplarily, the insulation chamber 15 outside the arch frame 2 is insulated by air-entrained concrete blocks to prevent the arch frame from being damaged due to excessive exposure time in a lower temperature environment. The arch frame 2 adopts a steel arch frame, and the hot air blowing device 3 is arranged on the top and the left and right sides of the arch frame 2 inner wall, and the quantity of the hot air blowing device 3 is adjusted according to the tunnel section size. The hot air blowing device 3 is arranged around the arch frame 2, which can play a blowing and heating effect without dead angles, and can effectively block or slow down the cold air convection.

On the basis of the foregoing embodiments, a more preferred embodiment is provided. In this embodiment, the power supply unit includes a solar cell panel 4 arranged on the top of the heat preservation chamber 15, and the solar cell panel 4 is connected with the hot air blowing device 3, specifically , the solar panel 4 is connected with the hot air blowing device 3 through the cable 11.

That is to say, utilizing the head space of the heat preservation chamber 15, a plurality of solar panels 4 can be installed and arranged on the top of the heat preservation chamber 15, and after the solar energy is converted into electric energy by the solar battery panels 4, the hot air blowing device 3 is directly powered, which can save energy. Electricity, reduce road electricity cost, and uphold the concept of green environmental protection and energy saving.

Exemplarily, the solar cell panel 4 is a monocrystalline silicon solar cell or a polycrystalline silicon solar cell.

On the basis of the above embodiments, a more preferred embodiment is provided. In this embodiment, the power supply device also includes an electrical storage device 5 arranged on the top of the heat preservation chamber 15. The electrical storage device 5 is connected to the solar panel 4 to store electricity. The device 5 is connected to the hot air blowing device 3, specifically, the power storage device 5 is connected to the solar panel 4 through a cable 11, and the power storage device 5 is connected to the hot wind blowing device 3 through a cable 11

In this embodiment, by adding an electric storage device 5 on the top of the heat preservation chamber 15, the electric energy converted by the solar cell panel 4 can be stored by the electric storage device 5, and when the sunlight is insufficient, that is, the solar cell panel 4 generates insufficient electricity. , the power storage device 5 can be enabled to supply power to the electrical device to ensure the normal operation of the heat preservation device.

In the above embodiment, more preferably, a heat insulation layer 6 is laid on the top of the heat preservation chamber 15 , and the solar cell panel 4 and the power storage device 5 are located on the heat insulation layer 6 . The heat dissipated in the heat preservation chamber 15 is insulated by the heat insulation layer 6 to prevent the heat from affecting the normal operation of the solar cell panel 4 and the power storage device 5 .

Preferably, thermal insulation cotton is laid between the solar cell panel 4 and the heat insulation layer 6 and between the heat insulation layer 6 and the top of the heat preservation chamber 15 for blocking or slowing down the heat output of the outside air.

On the basis of the above-mentioned embodiments, a more preferred embodiment is provided. In this embodiment, a wind-out thermal insulation device suitable for loess tunnel openings in seasonally cold regions also includes a control device 1 and a set on the arch frame 2. On the inner wall and close to the temperature sensor 7 of the tunnel opening 16, the temperature sensor 7 is used to collect the temperature at the tunnel opening 16; the control device 1 and the temperature sensor 7 are all connected to the power supply unit, and power is supplied to it by the power supply unit; the control unit 1 respectively Connect with blowing hot air device 3 and temperature sensor 7.

Specifically, the control device 1 compares the temperature collected by the temperature sensor 7 with a plurality of different preset temperature ranges, and controls the working power of the hot air blowing device 3 according to the comparison result. That is to say, a variety of different temperature ranges are preset in the control device 1, each temperature range corresponds to the working power of the hot air blowing device 3, the lower the temperature range, the greater the corresponding working power of the hot air blowing device 3 , so that the working power of the hot air blowing device 3 can be adaptively adjusted, which is conducive to saving electric energy and prolonging the working life of the hot air blowing device 3 . Preferably, the temperature sensor is arranged on the upper part of the arch frame close to the tunnel opening and on both sides of the left and right arches.

Exemplarily, the control device 1 is installed outside the arched frame 2, and heat preservation and antifreeze measures are also taken for it; the control device 1 is provided with a switch 12, a button 13 and a display screen 14, and the switch 12 controls the start and stop of the work of the air outlet heat preservation device , the keys include a heating key, a temperature adjustment key and a wind power adjustment key, and the temperature is displayed through a display screen 14 .

In the above-described embodiment, more preferably, a temperature alarm 8 is also provided near the tunnel opening 16 on the inner wall of the arch frame 2, and the temperature alarm 8 is connected to a power supply unit, and the power supply supplies power to the temperature alarm 8, and the temperature Alarm 8 is connected with control device 1 .

Specifically, when the temperature collected by the temperature sensor 7 is lower than the preset alarm temperature, it means that the working state of the hot air blowing device 3 is abnormal, and the temperature alarm 8 is used to alarm, which is convenient for people to find and maintain in time.

On the basis of the above embodiments, a more preferred embodiment is provided. In this embodiment, an illumination system 10 is also provided on the inner wall of the arched frame 2. The illumination system 10 is connected to the power supply device, and the illumination system 10 is arched. Sufficient lighting is provided in the channel where the rack 2 is located to ensure safe driving of the vehicle.

On the basis of the above embodiments, a more preferred embodiment is provided. In this embodiment, a monitoring system 9 is also provided on the inner wall of the arch frame 2. The monitoring system 9 is connected to the power supply device, and the monitoring system 9 is used to monitor the arch in real time. The traffic conditions in the channel where the frame 2 is located are monitored 24 hours a day.

It should be noted that at last: the above-described embodiment is only the specific implementation manner of the present utility model, in order to illustrate the technical scheme of the present utility model, rather than it is limited, and the protection scope of the present utility model is not limited thereto, Although the utility model has been described in detail with reference to the aforementioned embodiments, those of ordinary skill in the art should understand that any person familiar with the technical field can still describe the aforementioned embodiments within the technical scope disclosed in the utility model. Modifications or changes can be easily imagined in the technical solutions, or equivalent replacement of some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model. All should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (9)

1. The utility model provides a be applicable to seasonal cold district loess tunnel entrance to a cave air-out heat preservation device, its characterized in that, including hugging closely arch frame (2) that set up at tunnel entrance to a cave (16) terminal surface, the outer wall cladding of arch frame (2) is provided with heat preservation room (15), keep away from on the inner wall of arch frame (2) the position of tunnel entrance to a cave (16) is followed the arch direction equipartition and is installed a plurality of blast gates orientation blast hot air device (3) of tunnel entrance to a cave (16), blast hot air device (3) are connected with power supply unit.

2. The loess tunnel portal air-out heat preservation device suitable for seasonal cold regions according to claim 1, wherein the power supply device comprises a solar panel (4) arranged at the top of the heat preservation chamber (15), and the solar panel (4) is connected with the hot air blowing device (3).

3. The air-out heat preservation device suitable for the loess tunnel portal in the seasonal cold region according to claim 2, wherein the power supply device further comprises an electric storage device (5) arranged at the top of the heat preservation chamber (15), the electric storage device (5) is connected with the solar panel (4), and the electric storage device (5) is connected with the hot air blowing device (3).

4. The loess tunnel portal air-out heat preservation device suitable for seasonal cold regions according to claim 3, wherein a heat insulation layer (6) is laid on the top of the heat preservation chamber (15), and the solar cell panel (4) and the electric power storage device (5) are located on the heat insulation layer (6).

5. The loess tunnel portal air-out heat preservation device suitable for seasonal cold regions according to claim 1, further comprising a control device (1) and a temperature sensor (7) arranged on the inner wall of the arch frame (2) and close to the tunnel portal (16), wherein the control device (1) and the temperature sensor (7) are both connected with the power supply device, and the control device (1) is respectively connected with the hot air blowing device (3) and the temperature sensor (7).

6. The air-out heat preservation device for loess tunnel portal in seasonal cold area according to claim 5, wherein a temperature alarm (8) is further arranged on the inner wall of the arch frame (2) at a position close to the tunnel portal (16), the temperature alarm (8) is connected with the power supply device, and the temperature alarm (8) is connected with the control device (1).

7. The air-out heat preservation device for the loess tunnel portal in the seasonal cold region according to claim 5, wherein the control device (1) is used for comparing the temperature collected by the temperature sensor (7) with a plurality of preset different temperature ranges, and controlling the working power of the hot air blowing device (3) according to the comparison result.

8. The device for heat preservation of loess tunnel portal air outlet in seasonal cold area according to claim 1, wherein a lighting system (10) is further arranged on the inner wall of the arch frame (2), and the lighting system (10) is connected with the power supply device.

9. The device for heat preservation of loess tunnel portal air outlet in seasonal cold area according to claim 1, wherein a monitoring system (9) is further arranged on the inner wall of the arch frame (2), and the monitoring system (9) is connected with the power supply device.