Wind resistance insulation system and control method for wind inlet section of cold region tunnel

Abstract

The present invention provides a wind resistance insulation system and control method for a cold-region tunnel air inlet section, which relates to a tunnel project, including an air inlet steering unit, the air inlet steering unit including a plurality of air inlet steering pipes, the air inlet steering pipes being arranged on a tunnel section close to the tunnel air inlet, the air inlet steering pipes including a horizontal pipe section and a bent pipe section, the horizontal pipe section being connected to the bent pipe section, the air inlet of the horizontal pipe section facing the tunnel air inlet, the bent pipe section being arranged tilted downward in the direction of the tunnel air inlet. The present invention rationally utilizes tunnel air intake, does not require a high-power motor, and greatly saves tunnel operation costs.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel engineering, and in particular to a wind resistance insulation system and a control method for a wind inlet tunnel section in a cold region. Background Art

[0002] The traditional insulation measures used in tunnels in cold regions are relatively passive in responding to the natural environment. They can only reduce the spread of heat and the rate of freezing and thawing. The cold-proof effect is not obvious and the cost is high. Later, the existing technology achieved cold-proof by setting up air curtain walls at the tunnel entrance. Compared with the tunnel cold-proof door, the air curtain wall is obviously safer and more flexible. However, the existing air curtain wall needs to be realized by a high-power fan, which consumes a lot of electricity and requires regular maintenance, which greatly increases the tunnel operation cost. Summary of the invention

[0003] The purpose of the present invention is to provide a wind resistance insulation system and control method for the wind inlet section of a cold region tunnel to improve the above problems. In order to achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0004] The present application provides a wind resistance insulation system for a wind inlet tunnel section in a cold region, comprising an wind inlet turning unit, wherein the wind inlet turning unit comprises a plurality of wind inlet turning pipes, wherein the wind inlet turning pipes are arranged on a tunnel section close to the tunnel wind inlet, wherein the wind inlet turning pipes comprise a horizontal pipe section and a bent pipe section, wherein the horizontal pipe section is connected to the bent pipe section, wherein the air inlet of the horizontal pipe section faces the tunnel wind inlet, and the bent pipe section is arranged obliquely downward in the direction of the tunnel wind inlet.

[0005] The present application also provides a method for controlling a wind resistance insulation system of a wind inlet section of a cold region tunnel, the method comprising:

[0006] Acquiring first information, wherein the first information includes wind speed and temperature at a tunnel air inlet;

[0007] The wind speed at the tunnel air inlet is compared with a preset low wind speed threshold and a preset high wind speed threshold, respectively, and the temperature is compared with a preset temperature threshold;

[0008] When the temperature is lower than the preset temperature threshold and the wind speed is lower than the low wind speed threshold, the air inlet turning pipe is opened, and the air inlet turning channel and the wind shield door are closed;

[0009] Acquire second information, wherein the second information includes an angle between the horizontal pipe section and the bent pipe section, an air volume at a tunnel air inlet, and a wind speed and air volume at an air inlet of an air inlet turning pipe;

[0010] Calculating the number of air inlet steering ducts that need to be opened at this time based on the law of conservation of momentum according to the first information and the second information;

[0011] When the temperature is lower than the preset temperature threshold and the wind speed is between the low wind speed threshold and the high wind speed threshold, the air inlet turning pipe and the air inlet turning channel are opened, and the wind shield door is closed;

[0012] When the temperature is lower than the preset temperature threshold and the wind speed is greater than the high wind speed threshold, the air inlet turning pipe, the air inlet turning channel and the wind shield door are opened.

[0013] The beneficial effects of the present invention are:

[0014] The present invention uses a plurality of air inlet turning tubes of the air inlet turning unit to achieve the goal of first allowing the air at the tunnel air inlet opening to pass through a horizontal pipe section and enter the air inlet turning tube, and then turning the incoming air through a bent pipe section, so that the wind output from the bent pipe section tilts downward toward the tunnel air inlet opening to form a blocking wind curtain, thereby blocking the air intake and preventing external cold air from entering the tunnel, thereby achieving heat preservation of tunnels in cold areas. The present invention rationally utilizes the tunnel air intake, does not require a high-power motor, and greatly saves the tunnel operation cost.

[0015] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or be understood by implementing the embodiments of the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a side view of the wind resistance insulation system of the wind entrance section of a cold region tunnel according to the present invention.

[0018] Figure 2 It is a front view of the wind resistance insulation system of the wind entrance section of a cold region tunnel according to the present invention.

[0019] Figure 3 It is a schematic diagram of the wind resistance channel when the wind shield door is closed in the present invention.

[0020] Figure 4 It is a schematic diagram of the wind resistance channel when the wind shield door is open in the present invention.

[0021] Figure 5 It is a structural schematic diagram of the control system in the present invention.

[0022] Markings in the figure: 1. Air inlet steering pipe; 11. Horizontal pipe section; 12. Bent pipe section; 2. Tunnel section; 3. Air inlet steering channel; 31. Horizontal channel section; 32. Bent channel section; 4. Wind speed sensor; 51. First electric valve; 52. Second electric valve; 6. Temperature sensor; 7. Parallel guide tunnel; 8. Wind resistance channel; 9. Wind shield; 10. Control module. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. At the same time, in the description of the present invention, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0025] The present invention provides a wind resistance insulation system for a wind inlet tunnel section in a cold region, comprising an wind inlet turning unit, wherein the wind inlet turning unit comprises a plurality of wind inlet turning pipes 1, wherein the wind inlet turning pipes 1 are arranged on a tunnel section 2 close to the tunnel wind inlet, wherein the wind inlet turning pipes 1 comprise a horizontal pipe section 11 and a bent pipe section 12, wherein the horizontal pipe section 11 is connected to the bent pipe section 12, wherein the wind inlet of the horizontal pipe section 11 faces the tunnel wind inlet, and the bent pipe section 12 is arranged obliquely downward in the direction of the tunnel wind inlet.

[0026] The air inlet turning unit also includes an air inlet turning channel 3, the diameter of the air inlet turning channel 3 is larger than the diameter of the air inlet turning tube 1, the air inlet turning channel 3 is opened in the top structure of the tunnel arch, the air inlet turning channel 3 includes a horizontal channel section 31 and a bent channel section 32, the horizontal channel section 31 is connected to the bent channel section 32, the air inlet of the horizontal channel section 31 faces the tunnel air inlet surface and is connected to the outside, the bent channel section 32 is inclined downward toward the direction of the tunnel air inlet opening and is connected to the tunnel.

[0027] The insulation system also includes a control system, which includes a first electric valve 51, a second electric valve 52, a wind speed sensor 4, a temperature sensor 6 and a control module 10. The first electric valve 51 is arranged on the air inlet of the horizontal pipe section 11, the second electric valve 52 is arranged on the air inlet of the horizontal channel section 31, the wind speed sensor 4 and the temperature sensor 6 are arranged at the tunnel air inlet, and the control module 10 is respectively connected to the wind speed sensor 4, the temperature sensor 6 and the electric valve 5.

[0028] The wind inlet diverting unit also includes a wind resistance channel 8, which is opened between the tunnel section 2 and the parallel guide tunnel 7 of the tunnel and connects the tunnel section 2 and the parallel guide tunnel 7. The wind resistance channel 8 is a curved channel with a concave surface facing the tunnel air inlet. One end of the wind resistance channel 8 is opened on a side wall of the tunnel section 2, and the other end of the wind resistance channel 8 is opened on a side wall of the parallel guide tunnel 7 close to the parallel guide tunnel air inlet. The other end is provided with an openable and closable wind shield door 9.

[0029] One side of the wind shield door 9 is rotatably connected to one side of the other port, and the other side of the wind shield door 9 can be rotated to the other side wall of the parallel guide hole 7 .

[0030] The horizontal pipe section 11 and the bent pipe section 12 are rotatably connected along the longitudinal direction of the tunnel.

[0031] The air inlet deflection unit comprises a first air inlet deflection tube group arranged on the inner wall of the arch of the tunnel section 2 and a second air inlet deflection tube group arranged on the side wall of the tunnel section 2.

[0032] The air inlet steering tubes 1 in the first air inlet steering tube group are arranged on the inner wall of the arch of the tunnel section 2 in a staggered manner front to back and left to right, and the air inlet steering tubes 1 in the second air inlet steering tube group are arranged on the side wall of the tunnel section 2 in a staggered manner front to back and up to down.

[0033] The air outlet of the air inlet diverting pipe 1 closest to the tunnel air inlet opening is aligned with the bottom of the tunnel air inlet opening.

[0034] The present invention also provides a control method for a wind resistance insulation system of a wind inlet section of a cold region tunnel, the method comprising:

[0035] Acquiring first information, wherein the first information includes wind speed and temperature at a tunnel air inlet;

[0036] The wind speed at the tunnel air inlet is compared with a preset low wind speed threshold and a preset high wind speed threshold, respectively, and the temperature is compared with a preset temperature threshold;

[0037] When the temperature is lower than the preset temperature threshold and the wind speed is lower than the low wind speed threshold, the air inlet turning pipe is opened, and the air inlet turning channel and the wind shield door are closed;

[0038] Acquire second information, wherein the second information includes an angle between the horizontal pipe section and the bent pipe section, an air volume at a tunnel air inlet, and a wind speed and air volume at an air inlet of an air inlet turning pipe;

[0039] Calculating the number of air inlet steering ducts that need to be opened at this time based on the law of conservation of momentum according to the first information and the second information;

[0040] When the temperature is lower than the preset temperature threshold and the wind speed is between the low wind speed threshold and the high wind speed threshold, the air inlet turning pipe and the air inlet turning channel are opened, and the wind shield door is closed;

[0041] When the temperature is lower than the preset temperature threshold and the wind speed is greater than the high wind speed threshold, the air inlet turning pipe, the air inlet turning channel and the wind shield door are opened.

[0042] The present embodiment provides a wind resistance insulation system for the wind inlet tunnel section in cold regions, including an air inlet diversion unit and a control system, wherein the air inlet diversion unit includes a plurality of air inlet diversion pipes, an air inlet diversion channel and a wind resistance channel.

[0043] like Figure 1 and Figure 2 As shown, the air inlet steering duct 1 is arranged on the tunnel section 2 near the tunnel air inlet opening, and the air inlet steering duct 1 comprises a horizontal pipe section 11 and a bent pipe section 12, the horizontal pipe section 11 is connected to the bent pipe section 12, the air inlet of the horizontal pipe section 11 faces the tunnel air inlet opening, and the bent pipe section 12 is arranged downwardly and inclined toward the tunnel air inlet opening. The air inlet steering duct 1 is arranged on the tunnel section 2 near the tunnel air inlet opening, so as to achieve the blocking of the air inlet of the tunnel air inlet opening.

[0044] The caliber of the air inlet turning channel 3 is larger than the caliber of the air inlet turning tube 1. The air inlet turning channel 3 is opened in the top structure of the tunnel vault. The air inlet turning channel 3 includes a horizontal channel section 31 and a bent channel section 32. The horizontal channel section 31 is connected to the bent channel section 32. The air inlet of the horizontal channel section 31 faces the tunnel air inlet surface and is connected to the outside world. The bent channel section 32 is tilted downward toward the tunnel air inlet opening and is connected to the tunnel. Similarly, the cold air entering the air inlet turning channel 3 forms a barrier to the air inlet of the tunnel air inlet opening after being turned by the bent channel section 32. The caliber of the air inlet turning channel 3 is slightly smaller than the caliber of the tunnel air inlet opening.

[0045] The horizontal pipe section 11 and the bent pipe section 12 are rotatably connected along the longitudinal direction of the tunnel. The rotatable connection can adjust the angle between the horizontal pipe section 11 and the bent pipe section 12, thereby adjusting and blocking the cold air entering the tunnel air inlet according to actual conditions.

[0046] The air inlet turning unit includes a first air inlet turning tube group arranged on the inner wall of the arch of the tunnel section 2 and a second air inlet turning tube group arranged on the side wall of the tunnel section 2. Thus, the entire tunnel cross section forms a blocking wind curtain, so that the blocking effect of the air inlet of the tunnel is better.

[0047] The air inlet steering tubes 1 in the first air inlet steering tube group are arranged in a staggered manner on the inner wall of the vault of the tunnel section 2, and the air inlet steering tubes 1 in the second air inlet steering tube group are arranged in a staggered manner on the side wall of the tunnel section 2. This arrangement of the air inlet steering tubes 1 can improve the blocking effect of the air inlet at the tunnel air inlet opening.

[0048] The air outlet of the air inlet steering tube 1 closest to the tunnel air inlet is aligned with the bottom of the tunnel air inlet, thereby ensuring that the air inlet steering tube 1 closest to the tunnel air inlet can include the tunnel air inlet from top to bottom into the wind resistance range of the wind curtain formed by the air inlet steering tube 1, thereby improving the blocking effect of the air inlet at the tunnel air inlet.

[0049] like Figure 3 and Figure 4 As shown, the wind resistance channel 8 is opened between the tunnel section 2 and the parallel guide tunnel 7 of the tunnel and connects the tunnel section 2 and the parallel guide tunnel 7. The wind resistance channel 8 is a curved channel with a concave surface facing the tunnel air inlet. One end of the wind resistance channel 8 is opened on a side wall of the tunnel section 2, and the other end of the wind resistance channel 8 is opened on a side wall of the parallel guide tunnel 7 close to the parallel guide tunnel air inlet. The other end is provided with an openable and closable windshield door 9. After the wind inlet of the parallel guide tunnel 7 enters the wind resistance channel 8 and turns, it enters the tunnel section 2, thereby forming a barrier to the wind inlet of the tunnel air inlet. One side of the windshield door 9 is rotatably connected to one side of the other end, and the other side of the windshield door 9 can be rotated to the other side wall of the parallel guide tunnel 7. The other side of the windshield door 9 can be rotated to the other side wall of the parallel guide tunnel 7 so as to introduce the wind inlet entering the parallel guide tunnel 7 into the wind resistance channel 8 to the greatest extent, thereby improving the blocking effect of the wind inlet of the tunnel air inlet.

[0050] Combination Figure 1 , Figure 2 and Figure 5As shown, the control system includes a first electric valve 51, a second electric valve 52, a wind speed sensor 4, a temperature sensor 6 and a control module 10. The first electric valve 51 is arranged on the air inlet of the horizontal pipe section 11, the second electric valve 52 is arranged on the air inlet of the horizontal channel section 31, the wind speed sensor 4 and the temperature sensor 6 are arranged at the air inlet of the tunnel, and the control module 10 is respectively connected to the wind speed sensor 4, the temperature sensor 6 and the electric valve 5. It is also possible to select the wind shield 9 as an electric gate and connect the electric gate to the control module 10.

[0051] Combination Figure 1-5 As shown, this embodiment also provides a control method for the wind resistance insulation system of the wind entrance section of a cold region tunnel, the method comprising:

[0052] Acquire first information, wherein the first information includes wind speed and temperature at a tunnel air inlet, wherein the wind speed at the tunnel air inlet is acquired by a wind speed sensor 4, and the temperature at the tunnel air inlet is acquired by a temperature sensor 6;

[0053] The wind speed at the tunnel air inlet is compared with the preset low wind speed threshold and the high wind speed threshold, respectively, and the temperature is compared with the preset temperature threshold, wherein the preset temperature threshold, the preset low wind speed threshold and the preset high wind speed threshold are all preset in the control module 10. According to the actual situation in the cold area, the preset temperature threshold is generally -20°C, the preset low wind speed threshold is generally 5m / s, and the preset high wind speed threshold is generally 15m / s. After receiving the signals transmitted by the wind speed sensor 4 and the temperature sensor 6, the control module 10 processes the received signals, compares the wind speed at the tunnel air inlet with the preset low wind speed threshold and the high wind speed threshold, respectively, and compares the temperature with the preset temperature threshold;

[0054] When the temperature is lower than the preset temperature threshold and the wind speed is lower than the low wind speed threshold, the air inlet steering tube 1 is opened, and the air inlet steering channel 2 and the wind shield door 9 are closed. Specifically, the control module 10 controls the first electric valve 51 to be opened and the second electric valve 52 to be closed. Since the wind resistance channel 8 is used less frequently, the wind shield door 9 can be closed manually, or the wind shield door 9 can be made into an electric gate, and the closing of the wind shield door 9 is controlled by the control system;

[0055] Acquire second information, wherein the second information includes an angle between the horizontal pipe section and the bent pipe section, an air volume at a tunnel air inlet, and a wind speed and air volume at an air inlet of an air inlet turning pipe;

[0056] The number of air inlet steering tubes that need to be opened is calculated based on the first information and the second information based on the law of conservation of momentum. The number of air inlet steering tubes that need to be opened can be calculated to save electricity and tunnel operation costs. The specific implementation is as follows:

[0057] When the temperature is lower than the preset temperature threshold and the wind speed is lower than the low wind speed threshold, second information is obtained, wherein the second information includes the angle between the horizontal pipe section and the bent pipe section, the wind volume at the tunnel air inlet, and the wind speed and wind volume at the air inlet of the air inlet turning pipe;

[0058] The number n1 of the air inlet diverter pipes that need to be opened at this time is calculated according to the first information and the second information, and the calculation formula is as follows:

[0059]

[0060] Wherein, θ1 is the angle between the horizontal pipe section and the bent pipe section, v1 is the wind speed at the tunnel air inlet, m1 is the wind volume at the tunnel air inlet, v2 is the wind speed at the air inlet of the air inlet steering duct, and m2 is the air volume at the air inlet of the air inlet steering duct.

[0061] When the temperature is lower than the preset temperature threshold and the wind speed is between the low wind speed threshold and the high wind speed threshold, the air inlet steering tube 1 and the air inlet steering channel 2 are opened, and the wind shield door 9 is closed. Similarly, the control module 10 is used to control the wind shield door 9. The manual / control module 10 controls the wind shield door 9.

[0062] When the temperature is lower than the preset temperature threshold and the wind speed is greater than the high wind speed threshold, the air inlet turning duct 1, the air inlet turning channel 2 and the wind shield door 9 are opened. Similarly, the control module 10 is used to control the wind shield door 9. The wind shield door 9 is controlled by the manual / control module 10.

[0063] However, in actual use, after the air inlet turning tube 1 and the air inlet turning channel 2 are opened at the same time, the number of opened air inlet turning tubes 1 may exceed the actually required number due to the additional blocking effect of the air inlet turning channel 2 on the air inlet of the tunnel. Therefore:

[0064] When the temperature is lower than the preset temperature threshold and the wind speed is between the low wind speed threshold and the high wind speed threshold, third information is obtained, wherein the third information includes the wind volume at the tunnel air inlet, the wind speed and wind volume at the air inlet of the air inlet turning pipe, the angle between the horizontal channel section and the bent channel section, the wind speed at the air inlet of the air inlet turning channel, and the wind volume at the air inlet of the air inlet turning channel;

[0065] The number n2 of the air inlet diverter pipes that need to be opened at this time is calculated based on the first information and the third information, and the calculation formula is as follows:

[0066]

[0067] Wherein, v3 is the wind speed at the air inlet of the air inlet turning channel, m3 is the air volume at the air inlet of the air inlet turning channel, and θ2 is the angle between the horizontal channel section and the bent channel section;

[0068] Similarly, in actual use, after the air inlet turning tube 1, the air inlet turning channel 2 and the wind shield door 9 are opened at the same time, the number of opened air inlet turning tubes 1 may exceed the actually required number due to the additional blocking effect of the air inlet turning channel 2 and the wind shield door 9 on the air inlet of the tunnel. Therefore:

[0069] When the temperature is lower than the preset temperature threshold and the wind speed is greater than the high wind speed threshold, fourth information is obtained, wherein the fourth information includes the wind volume at the tunnel air inlet, the wind speed and wind volume at the air inlet of the air inlet turning pipe, the angle between the horizontal channel section and the bent channel section, the wind speed at the air inlet of the air inlet turning channel, the wind volume at the air inlet of the air inlet turning channel, and the wind speed and wind volume of the one port;

[0070] The number n3 of the air inlet diverter pipes that need to be opened at this time is calculated according to the first information and the fourth information, and the calculation formula is as follows:

[0071]

[0072] In the formula, v4 is the wind speed of the port, and m4 is the air volume of the port.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0074] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. The wind resistance insulation system for the wind tunnel entrance section in cold regions is characterized by: The invention comprises an air inlet steering unit, wherein the air inlet steering unit comprises a plurality of air inlet steering pipes (1), wherein the air inlet steering pipes (1) are arranged on a tunnel section (2) close to a tunnel air inlet opening, wherein the air inlet steering pipes (1) comprise a horizontal pipe section (11) and a bent pipe section (12), wherein the horizontal pipe section (11) is connected to the bent pipe section (12), wherein the air inlet of the horizontal pipe section (11) faces the tunnel air inlet opening, and the bent pipe section (12) is arranged to be inclined downward in the direction of the tunnel air inlet opening; The air inlet turning unit further comprises an air inlet turning channel (3), the diameter of the air inlet turning channel (3) is larger than the diameter of the air inlet turning tube (1), the air inlet turning channel (3) is opened in the top structure of the tunnel vault, the air inlet turning channel (3) comprises a horizontal channel section (31) and a bent channel section (32), the horizontal channel section (31) is connected to the bent channel section (32), the air inlet of the horizontal channel section (31) faces the tunnel air inlet surface and is connected to the outside, and the bent channel section (32) is arranged to be inclined downward toward the tunnel air inlet opening and is connected to the tunnel; The invention further comprises a control system, wherein the control system comprises a first electric valve (51), a second electric valve (52), a wind speed sensor (4), a temperature sensor (6) and a control module (10), wherein the first electric valve (51) is arranged on the air inlet of the horizontal pipe section (11), the second electric valve (52) is arranged on the air inlet of the horizontal channel section (31), the wind speed sensor (4) and the temperature sensor (6) are arranged at the air inlet of the tunnel, and the control module (10) is respectively connected to the wind speed sensor (4), the temperature sensor (6) and the electric valve (5); The wind inlet deflection unit further comprises a wind resistance channel (8), the wind resistance channel (8) being opened between the tunnel section (2) and the parallel guide tunnel (7) of the tunnel and connecting the tunnel section (2) and the parallel guide tunnel (7), the wind resistance channel (8) being a curved channel with a concave surface facing the tunnel wind inlet opening, one end of the wind resistance channel (8) being opened on a side wall of the tunnel section (2), the other end of the wind resistance channel (8) being opened on a side wall of the parallel guide tunnel (7) close to the parallel guide tunnel wind inlet, the other end being provided with an openable and closable wind shield door (9).

2. The wind resistance insulation system for the wind inlet section of a cold region tunnel as claimed in claim 1, characterized in that: One side of the wind shield door (9) is rotatably connected to one side of the other port, and the other side of the wind shield door (9) can be rotated to the other side wall of the parallel guide hole (7).

3. The wind resistance insulation system for the wind inlet section of a cold region tunnel according to claim 1, characterized in that: The horizontal pipe section (11) and the bent pipe section (12) are rotatably connected along the longitudinal direction of the tunnel.

4. The wind resistance insulation system for the wind inlet section of a cold region tunnel according to claim 1, characterized in that: The air inlet deflection unit comprises a first air inlet deflection tube group arranged on the inner wall of the arch of the tunnel section (2) and a second air inlet deflection tube group arranged on the side wall of the tunnel section (2).

5. The wind resistance insulation system for the wind inlet section of a cold region tunnel as claimed in claim 4, characterized in that: The air inlet steering tubes (1) in the first air inlet steering tube group are arranged on the inner wall of the arch of the tunnel section (2) in a staggered manner in front, back, left, and right directions, and the air inlet steering tubes (1) in the second air inlet steering tube group are arranged on the side wall of the tunnel section (2) in a staggered manner in front, back, up, and down directions.

6. The wind resistance insulation system for the wind inlet section of a cold region tunnel as claimed in claim 1, characterized in that: The air outlet of the air inlet diverting pipe (1) closest to the tunnel air inlet opening is aligned with the bottom of the tunnel air inlet opening.

7. A control method for the wind resistance insulation system of the wind tunnel entrance section in cold regions, characterized in that: The method includes: Acquiring first information, wherein the first information includes wind speed and temperature at a tunnel air inlet; The wind speed at the tunnel air inlet is compared with a preset low wind speed threshold and a preset high wind speed threshold, respectively, and the temperature is compared with a preset temperature threshold; When the temperature is lower than the preset temperature threshold and the wind speed is lower than the low wind speed threshold, the air inlet turning pipe is opened, and the air inlet turning channel and the wind shield door are closed; Acquire second information, wherein the second information includes an angle between the horizontal pipe section and the bent pipe section, an air volume at a tunnel air inlet, and a wind speed and air volume at an air inlet of an air inlet turning pipe; Calculating the number of air inlet steering ducts that need to be opened at this time based on the law of conservation of momentum according to the first information and the second information; When the temperature is lower than the preset temperature threshold and the wind speed is between the low wind speed threshold and the high wind speed threshold, the air inlet turning pipe and the air inlet turning channel are opened, and the wind shield door is closed; When the temperature is lower than the preset temperature threshold and the wind speed is greater than the high wind speed threshold, the air inlet turning pipe, the air inlet turning channel and the wind shield door are opened.

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