Tunnel air curtain test system

Abstract

The invention discloses a tunnel air curtain test system, which comprises a refrigeration house, the front and rear sides of the refrigeration house are respectively provided with a first air outlet and a first air supplement port, the first air outlet is provided with a first door body, the first air supplement port is provided with a second door body, the refrigeration house is internally provided with a refrigeration house partition plate, and the refrigeration house partition plate divides the interior of the refrigeration house into a front cold air supply chamber and a first rear pressure supplement chamber; an air outlet pipe and a second air supplementing opening are arranged on the front side and the rear side of the warm warehouse correspondingly, a third door body is arranged on the second air supplementing opening, a warm warehouse partition plate is arranged in the warm warehouse, and the interior of the warm warehouse is divided into a front warm air supply chamber and a second rear pressure supplementing chamber through the warm warehouse partition plate; an inlet of the air curtain machine communicates with the first air outlet, and an air supply opening of the air curtain machine communicates with the air outlet pipe; the inlet side of the tunnel model is communicated with the outlet of the air curtain machine; and the fan is arranged in the front cold air supply chamber. The system can provide an external cold air source and a warm air source with more accurate temperature, and the test accuracy is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tunnel test devices, in particular to a tunnel air curtain test system. BACKGROUND

[0002] With the continuous development of China's transportation construction industry, the construction of tunnels in cold regions is also increasing. Unlike tunnels in other regions, tunnels built in cold regions often face hazards caused by frozen surrounding rock. As of 2014, there were 11516 railway tunnels in China, of which 5990 tunnels, accounting for 52.4% of the total number of tunnels, were diseased. Especially in many cold regions of northwest and northeast China, many tunnels cannot be used for 8-9 months a year due to frost damage, and even some tunnels have lining cracks up to 5 cm under the action of frost heaving force. Therefore, it is extremely urgent to develop research and development of tunnel anti-freezing and heat preservation measures in cold regions.

[0003] The fundamental reason for tunnel frost damage is the freezing of the surrounding rock behind the lining. In particular, after the tunnel is completed, the cold air that invades the tunnel exchanges heat with the lining wall surface, changing the temperature distribution of the surrounding rock. Therefore, for operating tunnels, the key to frost prevention and heat preservation is to prevent the influence of cold air outside the hole on the temperature of the surrounding rock inside the tunnel. In recent years, considering the characteristics of frequent traffic, high safety level and short maintenance time of railway tunnels, experts and scholars have proposed the use of hot air curtains for frost prevention and heat preservation in cold tunnels. The hot air curtain is driven by a high-speed motor or a centrifugal fan to inject air at a certain temperature at a certain speed, forming an invisible curtain that can block cold air from entering in winter. Therefore, it is possible to install a hot air curtain in the tunnel to prevent frost and heat preservation in cold tunnels. Compared with frost prevention and heat preservation doors, heat insulation boards, heat preservation concrete, and electric heat tracing, the heat preservation effect of the hot air curtain is less affected by vehicle traffic, is easy to maintain, does not pose a threat to the normal operation of trains, and has the advantages of simple design, easy installation, low carbon and environmental protection.

[0004] Through retrieval, it is found that the prior art, such as CN115326867A - an air curtain heat preservation model test system and its test method, uses a cold storage to simulate the low temperature environment outside, and uses a fan built in the cold storage to blow cold air inside the cold storage into the tunnel.

[0005] As known in the art, a cold storage is often provided with a make-up air port at the top to maintain air pressure balance inside and outside the cold storage. However, this will cause the external air to enter the cold storage through the make-up air port and mix with the internal cold air, affecting the temperature of the cold air blown out of the cold storage, and further affecting the test effect due to the deviation of the cold air blown into the tunnel from the actual cold air temperature.

[0006] Therefore, how to provide a tunnel air curtain test system capable of reducing the influence of external air on the supply air temperature and improving the accuracy of the supply air temperature is an urgent problem for those skilled in the art. SUMMARY

[0007] Therefore, the present application provides a tunnel air curtain test system capable of reducing the influence of external air on the supply air temperature and improving the accuracy of the supply air temperature.

[0008] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0009] A tunnel air curtain test system comprises:

[0010] A cold storage is provided with a first air outlet and a first air supplementing outlet at the front and back sides, respectively, a first door body is arranged on the first air outlet, a second door body is arranged on the first air supplementing outlet, a cold storage partition is arranged inside the cold storage, the periphery of the cold storage partition has a first air flow gap with the inner peripheral wall surface of the cold storage, the cold storage partition divides the inside of the cold storage into a front cold air supply chamber and a first rear pressure supplementing chamber, the front cold air supply chamber and the first rear pressure supplementing chamber are communicated through the first air flow gap, and a refrigeration unit is arranged in the front cold air supply chamber.

[0011] A warm storage is provided with an air outlet pipe and a second air supplementing outlet at the front and back sides, respectively, a third door body is arranged on the second air supplementing outlet, a warm storage partition is arranged inside the warm storage, the periphery of the warm storage partition has a first air flow gap with the inner peripheral wall surface of the warm storage, the warm storage partition divides the inside of the warm storage into a front warm air supply chamber and a second rear pressure supplementing chamber, the front warm air supply chamber and the second rear pressure supplementing chamber are communicated through the first air flow gap, and a heating unit is arranged in the front warm air supply chamber.

[0012] An air curtain machine is arranged, the inlet of the air curtain machine is connected and communicated with the first air outlet, the air supply port of the air curtain machine is connected and communicated with the air outlet pipe, and the air curtain port of the air curtain machine is arranged downward to blow out air curtain.

[0013] A tunnel model is arranged, the inlet side of the tunnel model is connected and communicated with the outlet of the air curtain machine.

[0014] A fan is arranged in the front cold air supply chamber and close to the first air outlet.

[0015] A temperature sensor and an air pressure sensor are arranged at the first air outlet and the inlet side of the tunnel model.

[0016] Compared with the prior art, the tunnel air curtain test system provided by the application can realize the following beneficial effects: the cold air in the front cold air supply chamber is blown into the air curtain machine by the fan, the air curtain machine blows out the warm air in the front heating air supply chamber through the air outlet pipe to form an air curtain wall, the temperature sensor and the air pressure sensor monitor the temperature information and the air pressure information before and after the air curtain wall, and the test personnel collects and records the information to study the blocking effect of the air curtain wall on the cold air entering the tunnel. In addition, the energy-saving performance of the warm house when the warm house has the best cold air blocking effect can be studied.

[0017] In addition, the cold air in the front cold air supply chamber is blocked by the cold house partition and the first rear pressure compensation chamber, that is, the cold air supply partition is arranged, so that only a small amount of external air in the first rear pressure compensation chamber can mix with the cold air in the front cold air supply chamber through the first air flow gap. This not only ensures the balance of the air pressure in the front cold air supply chamber, but also reduces the content of the external air entering the front cold air supply chamber, thereby improving the accuracy of the cold air temperature in the front cold air supply chamber, improving the accuracy of the cold air temperature at the entrance of the tunnel, and simulating a more realistic external cold air temperature. At the same time, the warm air supply of the warm house can also provide relatively stable warm air through the warm house partition.

[0018] Therefore, the system can provide a more accurate external cold air source for the tunnel and a warm air source for blocking cold air in the simulation of the tunnel air curtain test in cold regions, thereby improving the accuracy of the test.

[0019] Further, the cold house partition and the warm house partition have the same structure, the cold house and the warm house have the same structure, and the system further comprises a first driving mechanism for driving the cold house partition to move horizontally and a second driving mechanism for driving the warm house partition to move horizontally.

[0020] The above technical solution has the following beneficial effects: the cold house partition and the warm house partition are respectively pushed forward to move the cold air and the warm air in the front cold air supply chamber and the front warm air supply chamber, and the cold air and the warm air are quickly discharged from the cold house and the warm house.

[0021] Further, the first driving mechanism and the second driving mechanism have the same structure, and the first driving mechanism comprises:

[0022] A belt transmission mechanism is fixed to the top end of the cold house;

[0023] A sliding frame is fixedly connected to the transmission belt of the belt transmission mechanism, and the two sides of the sliding frame are respectively connected to the two slide rails on the top end of the cold house through the sliding blocks thereon.

[0024] Traction ropes, two, two said traction ropes are fixedly connected with both sides of the sliding frame, both ends of the traction rope respectively through the front and rear side of the cold storage into the cold storage inside, and fixedly connected with the cold storage partition.

[0025] The beneficial effects produced by the above technical scheme are that the transmission belt in the belt transmission mechanism can drive the sliding frame to move horizontally during horizontal movement, and then drive the cold storage partition to move horizontally in the cold storage, so as to push the cold air in the front cold air supply chamber to move forward, and quickly discharge the cold air from the front cold air supply chamber; the warm air has the same principle.

[0026] Further, the belt transmission mechanism comprises:

[0027] A drive motor is fixed to the front side of the top end surface of the cold storage.

[0028] A driving pulley is sleeved on the driving end of the drive motor.

[0029] A driven pulley is installed on the rear side of the top end surface of the cold storage through a support, and the driving pulley and the driven pulley are drivingly connected through the transmission belt.

[0030] The lower belt of the transmission belt passes through the sliding frame and is pressed and fixed on the sliding frame by a pressing plate.

[0031] The beneficial effects produced by the above technical scheme are that in addition to controlling the power of the fan to control the air supply amount, the power of the drive motor can also be controlled to control the speed of the cold storage partition movement, thereby assisting in controlling the air supply amount, realizing accurate control of the air supply amount, and of course the air supply amount of the warm storage can be adjusted by adjusting the power of the air curtain machine and the power of the drive motor.

[0032] Further, each traction rope comprises a first steel wire rope and a second steel wire rope, one end of the first steel wire rope is fixed to a first hanging ear on one side of the sliding frame, the other end of the first steel wire rope extends into the front cold air supply chamber through the front side of the cold storage and is fixed to a second hanging ear on one side of the cold storage partition, one end of the second steel wire rope is fixed to a third hanging ear on the other side of the sliding frame, and the other end of the second steel wire rope extends into the first rear pressure compensation chamber through the rear side of the cold storage and is fixed to a fourth hanging ear on the other side of the cold storage partition.

[0033] The beneficial effects produced by the above technical scheme are that the connection and fixation of the traction rope with the cold storage partition and the sliding frame are easy.

[0034] Further, two first fixed pulleys and two second fixed pulleys are installed on both sides of the top end surface of the cold storage, two third fixed pulleys and two fourth fixed pulleys are installed on the front and rear side surfaces of the cold storage, the first steel wire rope is wound around the corresponding first fixed pulley and third fixed pulley, and the second steel wire rope is wound around the corresponding second fixed pulley and fourth fixed pulley.

[0035] The beneficial effects of the above technical solution are that the smoothness of the first steel wire rope and the second steel wire rope during movement is improved, and the noise and wear problems caused by direct contact between the steel wire rope and the cold storage are avoided.

[0036] Further, the eight supporting legs of the cold storage partition are each provided with a roller for rolling contact with the inner circumferential wall of the cold storage.

[0037] The beneficial effects of the above technical solution are that the cold storage partition rolls in contact with the inner circumferential wall of the cold storage through the rollers, and the smoothness of the cold storage partition during movement is improved.

[0038] Further, the cold storage and the warm storage are each provided with a moving wheel at the bottom end.

[0039] The beneficial effects of the above technical solution are that the movement and transportation of the cold storage and the warm storage are facilitated.

[0040] Further, the upper part of the air curtain blown out of the air curtain opening of the air curtain machine is provided with a wind speed sensor and a temperature sensor, and the lower part of the air curtain is provided with a linear temperature sensing optical fiber.

[0041] The beneficial effects of the above technical solution are that the wind speed sensor can detect the air outlet size of the air curtain in real time, and detect the air outlet temperature data of the upper and lower parts of the air curtain, thereby providing multi-directional measurement point data support for experimental research. BRIEF DESCRIPTION OF DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0043] Figure 1 The structure of a tunnel air curtain test system provided by the present application is shown in the figure.

[0044] Figure 2 The structure of the shaft side of the cold storage is shown in the figure.

[0045] Figure 3 The structure of the shaft side of the cold storage is shown in the figure. Figure 2 The structure of the shaft side of the cold storage is shown in the figure.

[0046] Figure 4 For Figure 2 The structure of the local part B is enlarged and shown schematically.

[0047] Figure 5 The perspective view of the main view of the cold storage.

[0048] Figure 6 The perspective view of the right view of the cold storage.

[0049] Figure 7 The schematic view of the first view angle of the cold storage partition.

[0050] Figure 8 The schematic view of the second view angle of the cold storage partition. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0052] The embodiments of the present application disclose a tunnel air curtain test system, comprising:

[0053] The cold storage 1 is provided with a first air outlet 101 and a first air supplement port 102 at the front and back sides, respectively, the first air outlet 101 is provided with a first door body 2, the first air supplement port 102 is provided with a second door body 3, the cold storage 1 is internally provided with a cold storage partition 4, the periphery of the cold storage partition 4 has a first air flow gap (not marked) with the inner peripheral wall surface of the cold storage 1, the cold storage partition 4 divides the inside of the cold storage 1 into a front cold air supply chamber 103 and a first rear pressure supplement chamber 104, the front cold air supply chamber 103 and the first rear pressure supplement chamber 104 are communicated through the first air flow gap, and the front cold air supply chamber 103 is provided with a refrigerating unit;

[0054] The warm storage 5 is provided with an air outlet pipe 6 and a second air supplement port 501 at the front and back sides, respectively, the second air supplement port 501 is provided with a third door body 7, the warm storage 5 is internally provided with a warm storage partition 8, the periphery of the warm storage partition 8 has a first air flow gap (not marked) with the inner peripheral wall surface of the warm storage 5, the warm storage partition 8 divides the inside of the warm storage 5 into a front warm air supply chamber 502 and a second rear pressure supplement chamber 503, the front warm air supply chamber 502 and the second rear pressure supplement chamber 503 are communicated through the first air flow gap, and the front warm air supply chamber 502 is provided with a heating unit;

[0055] The air curtain machine 9 is connected and communicated with the first air outlet 101 at the inlet, the air supply port of the air curtain machine 9 is connected and communicated with the air outlet pipe 6, and the air curtain port of the air curtain machine 9 is arranged downward to blow out the air curtain 100;

[0056] The tunnel model 10 is connected and communicated with the outlet of the air curtain machine 9 at the inlet side of the tunnel model 10;

[0057] The fan 11 is arranged in the front cold air supply chamber 103 and close to the first air outlet 101.

[0058] The temperature sensor 12 and the air pressure sensor 13 are arranged at the first air outlet 101 and the inlet side of the tunnel model 10.

[0059] The cold storage partition plate 4 and the warm storage partition plate 8 have the same structure, and the cold storage 1 and the warm storage 5 have the same structure, further comprising: a first driving mechanism 14 for driving the cold storage partition plate 4 to move horizontally, and a second driving mechanism 25 for driving the warm storage partition plate 8 to move horizontally.

[0060] The first driving mechanism 14 and the second driving mechanism 25 have the same structure, and the first driving mechanism 14 comprises:

[0061] The belt driving mechanism 141 is fixed on the top end of the cold storage 1.

[0062] The sliding frame 142 is fixedly connected with the transmission belt 1415 of the belt driving mechanism 141, and the two sides of the sliding frame 142 are respectively connected with the two slide rails 15 installed on the top end of the cold storage 1 through the sliding blocks 1421 on the two sides.

[0063] The traction rope 143 is two, and the two traction ropes 143 are respectively fixedly connected with the two sides of the sliding frame 142. The two ends of the traction rope 143 respectively pass through the front and rear sides of the cold storage 1 and extend into the cold storage 1, and are fixedly connected with the cold storage partition plate 4.

[0064] The belt driving mechanism 141 comprises:

[0065] The driving motor 1411 is fixed on the front side of the top end surface of the cold storage 1.

[0066] The driving motor 1411 is fixed on the front side of the top end surface of the cold storage 1.

[0067] The driven pulley 1413 is installed on the rear side of the top end surface of the cold storage 1 through the support 1414, and the driving pulley 1412 and the driven pulley 1413 are drivingly connected through the transmission belt 1415.

[0068] The lower belt 14151 of the transmission belt 1415 passes through the sliding frame 142 and is pressed and fixed on the sliding frame 142 through the pressing plate 1416.

[0069] Each traction rope 143 comprises a first steel wire rope 1431 and a second steel wire rope 1432, one end of the first steel wire rope 1431 is fixed with the first hanging ear 1422 on one side of the sliding frame 142, the other end extends into the front cold air supply chamber 103 through the front side of the cold storage 1 and is fixed with the second hanging ear 41 on one side of the cold storage partition plate 4, one end of the second steel wire rope 1432 is fixed with the third hanging ear 1423 on the other side of the sliding frame 142, the other end extends into the first rear pressure compensation chamber 104 through the rear side of the cold storage 1 and is fixed with the fourth hanging ear 42 on the other side of the cold storage partition plate 4.

[0070] Two first fixed pulleys 16 and two second fixed pulleys 17 are respectively installed on the two sides of the top end face of the cold storage 1, two third fixed pulleys 18 and two fourth fixed pulleys 19 are respectively installed on the front and rear sides of the cold storage 1, the first steel wire rope 1431 is wound around the corresponding first fixed pulley 16 and third fixed pulley 18, and the second steel wire rope 1432 is wound around the corresponding second fixed pulley 17 and fourth fixed pulley 19.

[0071] Rollers 20 for rolling contact with the inner circumferential wall of the cold storage 1 are arranged on the eight legs of the cold storage partition plate 4.

[0072] The mobile wheels 22 are installed at the bottom ends of the cold storage 1 and the warm storage 5.

[0073] The upper part of the air curtain 100 blown out by the air curtain machine 9 is provided with a wind speed sensor 23 and a temperature sensor 12, and the lower part of the air curtain 100 is provided with a linear temperature sensing optical fiber 24.

[0074] The principle of the system is as follows:

[0075] When the cold storage partition plate is located at the rear of the cold storage, the refrigeration unit in the front cold air supply chamber cools and reduces the temperature of the front cold air supply chamber to the set temperature, when the cold storage needs to supply cold air to the outside tunnel, the first door body, the second door body and the fan are opened, then the cold storage partition plate is driven by the traction rope to move from the rear to the front of the cold storage, pushing the cold air in the front cold air supply chamber to move forward, and under the action of the fan, the cold air is quickly blown into the air curtain machine from the first air outlet, when the cold storage partition plate moves from the rear to the front of the cold storage, the first rear pressure compensation chamber forms a negative pressure, and the first rear pressure compensation chamber is supplied with air through the first air supply port arranged at the rear of the cold storage to eliminate the negative pressure. The cold air in the front cold air supply chamber in the system is mostly blocked by the cold storage partition plate and the first rear pressure compensation chamber, that is, through the arrangement of the cold air partition plate, only a small amount of external air in the first rear pressure compensation chamber can mix with the cold air in the front cold air supply chamber through the first air flow gap, which not only ensures the balance of the air pressure inside and outside the front cold air supply chamber, but also reduces the content of external air entering the front cold air supply chamber, so that the temperature of the cold air entering the air curtain machine can be basically kept constant, thereby providing a more accurate external cold air source for the tunnel in the simulation of the cold region tunnel air curtain test, and improving the accuracy of the test.

[0076] And, by adjusting the frequency size of the fan, the speed of the fan blowing can be realized, and then the test working condition when the external cold air blows into the tunnel entrance at a certain speed can be simulated, and when the adjustment of the fan is not accurate enough, the frequency size of the driving motor can also be controlled to control the speed of the cold storage partition transverse movement, and then the air outlet speed is controlled, that is, the fan and the cold storage partition cooperate, which can accurately simulate the test working condition when the external cold air blows into the tunnel entrance at different speeds.

[0077] And the warm warehouse and the cold warehouse have similar working principles, which are not described here.

[0078] The test system can verify that the warm warehouse is set to how many degrees of air outlet to block the cold air and reduce the energy consumption of the warm warehouse, and provide a theoretical basis for actual air curtain installation and adjustment. For example, it can verify the influence of the air outlet temperature of the warm warehouse at 5°, 10°, 20°, 30°, etc. on the blocking performance of the cold air.

[0079] In addition, the air curtain machine of the system can also be connected in series, and the blocking effect of multiple air curtain machines on the cold air of the tunnel can be studied.

[0080] Each embodiment in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same and similar parts of each embodiment can be referred to each other. For the device disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple, and the related parts can be referred to the method part.

[0081] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tunnel wind curtain test system, characterized in that, The application relates to a refrigeration and heating system. The refrigeration and heating system comprises a refrigeration room (1), a heating room (5), a wind curtain machine (9) and a tunnel model (10). The refrigeration room (1) is provided with a first air outlet (101) and a first air supplementing outlet (102) at the front and back sides respectively, the first air outlet (101) is provided with a first door body (2), the first air supplementing outlet (102) is provided with a second door body (3), the refrigeration room (1) is internally provided with a refrigeration room partition plate (4), the refrigeration room partition plate (4) is provided with a first air flow gap around the inner circumferential wall surface of the refrigeration room (1), the refrigeration room partition plate (4) divides the refrigeration room (1) into a front cold air supply chamber (103) and a first rear pressure supplementing chamber (104), the front cold air supply chamber (103) and the first rear pressure supplementing chamber (104) are communicated through the first air flow gap, and the front cold air supply chamber (103) is internally provided with a refrigeration unit. The heating room (5) is provided with an air outlet pipe (6) and a second air supplementing outlet (501) at the front and back sides respectively, the second air supplementing outlet (501) is provided with a third door body (7), the heating room (5) is internally provided with a heating room partition plate (8), the heating room partition plate (8) is provided with a first air flow gap around the inner circumferential wall surface of the heating room (5), the heating room partition plate (8) divides the heating room (5) into a front heating air supply chamber (502) and a second rear pressure supplementing chamber (503), the front heating air supply chamber (502) and the second rear pressure supplementing chamber (503) are communicated through the first air flow gap, and the front heating air supply chamber (502) is internally provided with a heating unit. The wind curtain machine (9) is connected and communicated with the first air outlet (101) and the air outlet pipe (6), and the wind curtain machine (9) blows out a wind curtain (100) downward. The tunnel model (10) is connected and communicated with the wind curtain machine (9) and the first air outlet (101). The fan (11) is arranged in the front cold air supply chamber (103) and close to the first air outlet (101).

2. A tunnel wind curtain test system according to claim 1, characterized in that Temperature sensors (12) and air pressure sensors (13) are arranged on the first air outlet (101) and the inlet side of the tunnel model (10).

3. A tunnel wind curtain test system according to claim 2, wherein The refrigeration room partition plate (4) and the heating room partition plate (8) have the same structure, the refrigeration room (1) and the heating room (5) have the same structure, and the refrigeration and heating system further comprises a first driving mechanism (14) for driving the refrigeration room partition plate (4) to move laterally and a second driving mechanism (25) for driving the heating room partition plate (8) to move laterally. The first driving mechanism (14) and the second driving mechanism (25) have the same structure, and the first driving mechanism (14) comprises a belt driving mechanism (141) fixed on the top end of the refrigeration room (1), a sliding frame (142) fixedly connected with a transmission belt (1415) of the belt driving mechanism (141), and two slide rails (15) installed on the top end of the refrigeration room (1) and slidably connected with the sliding frame (142) through two slide blocks (1421) arranged on the two sides of the sliding frame (142). ​ Traction ropes (143) are two, two traction ropes (143) are fixedly connected with two sides of the sliding frame (142), two ends of the traction rope (143) respectively pass through the front and rear sides of the cold storage (1) and extend into the cold storage (1) and are fixedly connected with the cold storage partition (4).

4. A tunnel wind curtain test system according to claim 3, wherein The belt drive mechanism (141) comprises: A driving motor (1411) is fixed on the front side of the top end surface of the cold storage (1); A driving pulley (1412) is sleeved on the driving end of the driving motor (1411); A driven pulley (1413) is installed on the rear side of the top end surface of the cold storage (1) through a support (1414), and the driving pulley (1412) and the driven pulley (1413) are drivingly connected through the transmission belt (1415); The lower belt (14151) of the transmission belt (1415) passes through the sliding frame (142) and is pressed and fixed on the sliding frame (142) through a pressing plate (1416).

5. The tunnel wind curtain test system according to claim 3, wherein, Each traction rope (143) comprises a first steel wire rope (1431) and a second steel wire rope (1432), one end of the first steel wire rope (1431) is fixed with a first hanging ear (1422) on one side of the sliding frame (142), the other end extends into the front cold air supply chamber (103) through the front side of the cold storage (1) and is fixed with a second hanging ear (41) on one side of the cold storage partition (4), one end of the second steel wire rope (1432) is fixed with a third hanging ear (1423) on the other side of the sliding frame (142), and the other end extends into the first rear pressure compensation chamber (104) through the rear side of the cold storage (1) and is fixed with a fourth hanging ear (42) on the other side of the cold storage partition (4).

6. A tunnel wind curtain test system according to claim 5, wherein Two first fixed pulleys (16) and two second fixed pulleys (17) are respectively installed on the two sides of the top end surface of the cold storage (1), two third fixed pulleys (18) and two fourth fixed pulleys (19) are respectively installed on the front and rear sides of the cold storage (1), the first steel wire rope (1431) is wound around the corresponding first fixed pulley (16) and third fixed pulley (18), and the second steel wire rope (1432) is wound around the corresponding second fixed pulley (17) and fourth fixed pulley (19).

7. A tunnel curtain test system according to any one of claims 2 to 6, wherein Rollers (20) for rolling contact with the inner circumferential wall of the cold storage (1) are arranged on the eight legs of the cold storage partition (4).

8. A tunnel curtain test system according to any one of claims 1 to 6, wherein The cold storage (1) and the warm storage (5) are both provided with moving wheels (22) at the bottom ends.

9. A tunnel curtain test system according to any one of claims 1-6, characterized in that An air curtain (100) blown out of the air curtain port of the air curtain machine (9) is provided with a wind speed sensor (23) and a temperature sensor (12) at the upper part, and a linear temperature sensing optical fiber (24) at the lower part.

Images