Tunnel heating and air supplying device suitable for cold region

Abstract

The utility model provides a tunnel heating air supply device suitable for a cold region, which comprises a fan, the fan is connected with air duct cloth in a tunnel through an air duct, the air duct is formed by rolling an iron sheet or an aluminum sheet, a heating assembly is arranged in the air duct, and the heating assembly comprises a heating element, a temperature sensor and a controller. The temperature sensor and the heating element are electrically connected with the controller, a maintenance window corresponding to the temperature sensor is formed in the side wall of the air duct, and heat preservation and insulation layers are arranged outside the air duct and the maintenance window; the draught fan brings hot air into the tunnel, the temperature in the tunnel is guaranteed, and the problems that air fluidity becomes poor in the low-temperature environment, cold air accumulation, humidity increase and damage to the tunnel structure are caused, and the construction efficiency of constructors in the low-temperature environment is reduced are avoided. Therefore, it is guaranteed that the temperature in the tunnel is appropriate, and the situation that the tunnel air duct cloth is affected by too high temperature or workers are affected by too low temperature is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field related to tunnel construction, in particular to a tunnel heating and air supply device suitable for cold areas. Background Art

[0002] Conventional tunnel ventilation primarily consists of fans located outside the tunnel and ductwork connecting the fan terminals to the construction area, effectively circulating and refreshing the air within the tunnel. In winter, the low temperatures at the tunnel face pose significant challenges to both construction personnel and equipment. Extremely cold weather can impact construction progress and potentially endanger worker health.

[0003] Therefore, when building tunnels in cold areas or in cold weather, it is necessary to heat the tunnel ventilation during construction to prevent the low temperature environment from making construction workers feel cold, reducing construction efficiency, and causing damage to the tunnel structure. Utility Model Content

[0004] The utility model aims to provide a tunnel heating and air supply device suitable for cold areas, which heats the tunnel ventilation and avoids the deterioration of air fluidity in a low-temperature environment, which leads to accumulation of cold air and increased humidity, causing damage to the tunnel structure, and reducing the construction efficiency of construction workers in a low-temperature environment.

[0005] To this end, the technical solution adopted by the utility model is: a tunnel heating and air supply device suitable for cold areas, including a fan, the fan is connected to the air duct cloth in the tunnel through an air duct, the air duct is made of iron sheet or aluminum sheet, and a mounting bracket is provided under the air duct, a heating assembly is provided in the air duct, the heating assembly includes a heating element arranged on the inner wall of the air duct, a temperature sensor for measuring the temperature in the air duct and a controller for controlling the heating element to be turned on or off, the temperature sensor, the heating element and the controller are electrically connected, an inspection window is provided on the side wall of the air duct corresponding to the temperature sensor, and thermal insulation layers are provided outside the air duct and outside the inspection window.

[0006] As a preferred embodiment of the above solution, the heating element includes two groups of heating plates arranged opposite to each other on the inner wall of the wind tube, and the heating plates are arranged in a spiral shape in the wind tube.

[0007] More preferably, reinforcing ribs are provided in the air duct, and the reinforcing ribs are composed of a plurality of struts arranged at intervals in a crisscross pattern along the length direction.

[0008] More preferably, the air duct is made of stainless steel sheet.

[0009] More preferably, a thermal insulation curtain is provided at the tunnel entrance.

[0010] More preferably, the air duct adopts an axial flow variable frequency fan with a power of 200KW×2.

[0011] The beneficial effects of the utility model are as follows: by arranging a heating component in the air duct, the air is heated, and the fan brings the hot air into the tunnel, thereby accelerating the air circulation in the tunnel, ensuring the temperature in the tunnel, and avoiding the deterioration of air fluidity in a low-temperature environment, which leads to accumulation of cold air, increased humidity, and damage to the tunnel structure, as well as reduced construction efficiency of construction workers in a low-temperature environment. The temperature in the air duct is detected by a temperature sensor, thereby ensuring that the temperature in the tunnel is at an appropriate temperature, avoiding the impact of excessively high temperature on the tunnel air duct cloth or excessively low temperature on the workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the present utility model.

[0013] Figure 2 It is a schematic diagram of the installation structure of the heating plate inside the wind tube of the utility model. DETAILED DESCRIPTION

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] like Figure 1-2 As shown, a tunnel heating and air supply device suitable for cold areas includes a fan 2, which is connected to the air duct cloth in the tunnel through an air duct 1. The air duct 1 is made of iron sheet or aluminum sheet. A mounting bracket 4 is provided under the air duct 1. A heating component is provided in the air duct 1. The heating component includes a heating element provided on the inner wall of the air duct 1, a temperature sensor for measuring the temperature in the air duct 1 and a controller for controlling the heating element to be turned on or off. The temperature sensor, the heating element and the controller are electrically connected. An inspection window 3 is provided on the side wall of the air duct 1 corresponding to the temperature sensor. A thermal insulation layer is provided outside the air duct 1 and outside the inspection window 3.

[0016] The temperature inside the duct 1 is detected by a temperature sensor. When the temperature inside the duct 1 exceeds a preset maximum value, the temperature sensor transmits a signal to the controller, which turns off the heating element to reduce the temperature inside the duct 1. When the temperature inside the duct 1 drops to a preset minimum value, the controller turns on the heating element. This can effectively prevent the temperature inside the duct 1 from being too high and causing damage to the duct cloth in the tunnel, or from being too low and affecting the staff and reducing work efficiency. A thermal insulation layer is set outside the duct 1 to maintain the temperature inside the duct 1 and prevent staff from being burned if they accidentally touch the outer shell of the duct 1.

[0017] The heating element includes two sets of heating fins 5 positioned opposite each other on the inner wall of the air duct 1. The heating fins 5 are arranged in a spiral pattern within the air duct 1. The two sets of heating fins, each with a power of 15 kW, total 30 kW. The two sets of heating fins 5 ensure uniform heating of the air. The spiral pattern of the heating fins 5 within the air duct 1 increases the contact time between the heating fins 5 and the air, ensuring effective heating.

[0018] The fan 1 is provided with reinforcing ribs 6, which are composed of a plurality of struts arranged at intervals along the length. The staggered arrangement of the reinforcing ribs 6 increases the strength of the fan 1 and prevents the fan 1 from deforming due to the weight of the heating plate 5 and external forces, which would affect the normal use of the heating device.

[0019] The air duct 1 is made of stainless steel sheet. The air duct 1 is made of stainless steel, which has good thermal conductivity and mechanical strength and can ensure the basic strength of the air duct 1.

[0020] A thermal insulation curtain 7 is installed at the tunnel entrance. This prevents the rapid escape of hot air from the tunnel, maintaining the temperature within the tunnel. Fixing clips (not shown) are installed at the upper and lower ends of the thermal insulation curtain 7 near the air duct 1. These clips clamp the open portion of the thermal insulation curtain 7, further preventing the escape of hot air from the tunnel.

[0021] The air duct 1 adopts an axial flow variable frequency fan with a power of 200KW x 2. The axial flow fan has a simple structure, is easy to manufacture, has a large air volume, is small in size and has low energy consumption.

[0022] By setting a heating component in the air duct 1, the fan 2 brings hot air into the tunnel, accelerating the air circulation in the tunnel, ensuring the temperature in the tunnel, and avoiding the deterioration of air fluidity in a low-temperature environment, which leads to accumulation of cold air and increased humidity, causing damage to the tunnel structure, and reducing the construction efficiency of construction workers in a low-temperature environment. The temperature in the air duct is detected by a temperature sensor to ensure that the temperature in the tunnel is at an appropriate temperature, avoiding the impact of excessively high temperature on the tunnel air duct cloth or excessively low temperature on the workers.

[0023] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A tunnel heating and air supply device suitable for cold regions, comprising a fan (2), characterized in that: The fan (2) is connected to the wind tube cloth in the tunnel via a wind tube (1). The wind tube (1) is made of rolled iron or aluminum sheets. A mounting bracket (4) is provided below the wind tube (1). A heating assembly is provided inside the wind tube (1). The heating assembly includes a heating element provided on the inner wall of the wind tube (1), a temperature sensor for measuring the temperature inside the wind tube (1), and a controller for controlling the heating element to be turned on or off. The temperature sensor, the heating element, and the controller are electrically connected. An inspection window (3) is provided on the side wall of the wind tube (1) corresponding to the temperature sensor. A thermal insulation layer is provided outside the wind tube (1) and outside the inspection window (3). The heating element comprises two groups of heating plates (5) arranged opposite to each other on the inner wall of the wind tube (1); the heating plates (5) are arranged in a spiral shape in the wind tube (1); a reinforcing rib (6) is provided in the wind tube (1); the reinforcing rib (6) is composed of a plurality of support rods arranged at intervals in a crisscross pattern along the length direction.

2. The tunnel heating and air supply device suitable for cold regions according to claim 1, characterized in that: The air duct (1) is made of stainless steel sheet.

3. The tunnel heating and air supply device suitable for cold regions according to claim 1, characterized in that: A heat-insulating curtain (7) is provided at the tunnel entrance.

4. The tunnel heating and air supply device suitable for cold regions according to claim 1, characterized in that: The wind tube (1) adopts an axial flow variable frequency fan with a power of 200KW×2.

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