High-ground-temperature tunnel face construction area ventilation pipe refrigeration device and refrigeration method

Abstract

The invention relates to a high-ground-temperature tunnel face construction area ventilation pipe refrigerating device and method.The device comprises a cooling pipe, the cooling pipe is sleeved with a shell, a closed inner cavity is formed between the outer pipe wall of the cooling pipe and the shell, one end of the cooling pipe is used for being connected with a construction area ventilation pipe, and a filter screen is fixedly arranged at the other end of the cooling pipe; the inner cavity is used for containing ice blocks and water; the inner cavity is filled with ice blocks and water to form an ice-water mixture, the ice-water mixture is used for cooling the cooling pipe, and the cooled cooling pipe exchanges heat with air passing through the cooling pipe, so that the air passing through the cooling pipe is refrigerated, and the air blown into the tunnel is changed into cold air; the environment temperature in the tunnel is further reduced; compared with a traditional tunnel refrigeration technology, equipment such as an air conditioner does not need to be additionally arranged in the tunnel, supplied air in the tunnel is cooled through the air supply system and the air refrigeration device, and refrigeration in the tunnel is more economical.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel engineering, and in particular to a ventilation pipe refrigeration device and a refrigeration method for a high ground temperature tunnel face construction area. Background Art

[0002] During tunnel construction, the tunnel needs to be ventilated to supply fresh air to the tunnel. However, during tunnel construction, due to the influence of tunnel length, burial depth, rock geology and external environmental temperature, the temperature inside the tunnel may rise to 40-45 degrees Celsius. The high temperature environment brings inconvenience to the work of the workers in the tunnel. In the existing technology, the more economical and convenient treatment method is to spray water on the face to reduce the temperature of the construction area. However, this method is easy to increase the humidity in the construction area. The high temperature and high humidity environment is easy to cause physical discomfort to the construction workers and short circuit of engineering electronic equipment. The more advanced method is to use a cooling tower to cool the tunnel outside or inside the tunnel. This technology has a good cooling effect but is extremely costly. It is suitable for ultra-high geothermal tunnels in the southwestern mountainous areas (surrounding rock temperature exceeds 80°C and the temperature inside the tunnel is above 50°C). There is still a lack of economical and effective cooling technology for ordinary high geothermal tunnels (surrounding rock temperature is higher than 25°C and lower than 50°C, and the temperature inside the tunnel is 40-45°C). In addition, when the tunnel is too long, the heat accumulated in the tunnel cannot be discharged. Even if the air supply power of the ventilation duct is increased for forced convection heat exchange, the temperature and humidity in the tunnel cannot be reduced, which brings inconvenience to the tunnel construction and even affects the efficiency of tunnel construction. Summary of the invention

[0003] In order to solve the technical problem in the prior art that only ventilation pipes are used for ventilation and the temperature in the tunnel cannot be reduced, the present invention provides a ventilation pipe refrigeration device and a refrigeration method for a high ground temperature tunnel face construction area.

[0004] The technical solution of the present invention to solve the above technical problems is as follows:

[0005] A refrigeration device for a ventilation pipe in a construction area of ​​a tunnel face with high ground temperature comprises a cooling pipe, an outer shell is disposed outside the cooling pipe, a closed inner cavity is formed between the outer tube wall of the cooling pipe and the outer shell, one end of the cooling pipe is used to connect to the ventilation pipe in the construction area, a filter is fixedly provided at the other end of the cooling pipe, the outer shell is coated with thermal insulation cotton or the outer shell is configured as a thermal insulation box structure; the inner cavity is used to contain ice cubes and water.

[0006] The beneficial effects of the present invention are as follows: by filling ice cubes and water in the inner cavity to form an ice-water mixture, the ice-water mixture is used to cool the cooling pipe, and the cooled cooling pipe exchanges heat with the air passing through the cooling pipe to achieve cooling of the air passing through the cooling pipe, so that the air blown into the tunnel becomes cold wind, thereby reducing the ambient temperature in the tunnel; compared with traditional tunnel refrigeration technology, the present invention does not need to add additional equipment such as air conditioners or cooling towers in the tunnel, and uses the air supply system and air refrigeration device to cool the supply air in the tunnel, making the refrigeration in the tunnel more economical.

[0007] Based on the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, one end of the cooling pipe is connected to a connecting pipe, and one end of the connecting pipe is fixedly connected to one end of the cooling pipe via a flange; the other end of the connecting pipe is used to connect to the construction area ventilation pipe.

[0009] Furthermore, the connecting pipe includes a pipe body, a first connecting flange is fixedly provided at one end of the pipe body, a connecting threaded pipe is fixedly provided at the other end of the pipe body, a cam is fixedly provided on the pipe body, the first connecting flange is fixedly connected to one end of the cooling pipe via a flange, and the connecting threaded pipe or the pipe body is used to connect the construction area ventilation pipe.

[0010] Furthermore, a material discharge window is provided on the outer shell, the material discharge window is connected with the inner cavity, and a sealing window door for sealing the material discharge window is provided at the material discharge window.

[0011] Furthermore, the shell is provided with a water inlet and a water outlet, the water inlet is located at the top end of the shell, and the water outlet is located at the bottom end of the shell; the water inlet is provided with an inlet plug for sealing the water inlet, and the water outlet is provided with an outlet plug for sealing the water outlet; the inlet plug and the outlet plug are both detachably connected to the shell by threads.

[0012] Furthermore, at least one hook is provided on the shell, and the hook is fixedly connected to the shell.

[0013] Furthermore, a temperature sensor and a wind speed sensor are fixedly mounted on the cooling pipe; the temperature sensor is used to detect the temperature of the air passing through the cooling pipe; and the wind speed sensor is used to detect the moving speed of the air passing through the cooling pipe.

[0014] Furthermore, a plurality of outer guide grooves are provided on the outer tube wall of the cooling tube, and a plurality of inner guide grooves are provided on the inner tube wall of the cooling tube; the plurality of outer guide grooves and the plurality of inner guide grooves all extend along the length direction of the cooling tube.

[0015] Furthermore, the plurality of outer guide grooves and the plurality of inner guide grooves are all spiral grooves.

[0016] In order to solve the above technical problems, the present invention also provides a cooling method for the construction area of ​​a tunnel face with high ground temperature, and the specific technical contents are as follows:

[0017] A method for cooling a high geothermal tunnel face construction area adopts the above-mentioned high geothermal tunnel face construction area ventilation pipe cooling device to cool the air passing through the construction area ventilation pipe to achieve cooling of the high geothermal tunnel face construction area. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The structure of a ventilation pipe refrigeration device for a high ground temperature tunnel face construction area according to an embodiment of the present invention is shown in FIG. Figure 1 ;

[0019] Figure 2 The structure of a ventilation pipe refrigeration device for a high ground temperature tunnel face construction area according to an embodiment of the present invention is shown in FIG. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the structure of the connecting pipe in an embodiment of the present invention;

[0021] Figure 4 The side view of the housing in the embodiment of the present invention Figure 1 ;

[0022] Figure 5 The side view of the housing in the embodiment of the present invention Figure 2 ;

[0023] Figure 6 is a front view of a housing in an embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the structure of a cooling tube in an embodiment of the present invention;

[0025] Figure 8 for Figure 7 Middle AA section view;

[0026] Fig. 9 The present invention is a schematic diagram of the application structure of a ventilation pipe refrigeration device for a high ground temperature tunnel face construction area in an embodiment of the present invention.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 1. Shell, 2. Inner cavity, 3. Cooling pipe, 4. Filter, 5. Connecting pipe, 6. Ventilation pipe in construction area, 7. Discharge window, 8. Sealed window and door, 9. Water inlet, 10. Inlet plug, 11. Water outlet, 12. Outlet plug, 13. Temperature sensor, 14. Wind speed sensor, 15. Connecting threaded pipe, 16. Pipe body, 17. Boss, 18. First connecting flange, 19. Second connecting flange, 20. Boss, 21. Hook, 22. Hook mounting hole, 23. Outer guide groove, 24. Inner guide groove. DETAILED DESCRIPTION

[0029] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0030] like Figure 1 As shown, this embodiment provides a ventilation pipe refrigeration device for the construction area of ​​a high ground temperature tunnel face, characterized in that it includes a cooling pipe 3, the cooling pipe 3 is provided with a shell 1, and a closed inner cavity 2 is formed between the outer tube wall of the cooling pipe 3 and the shell 1, one end of the cooling pipe 3 is used to connect the construction area ventilation pipe 6, and the other end of the cooling pipe 3 is fixedly provided with a filter 4, the outer shell 1 is covered with insulation cotton or the outer shell 1 is set as an insulation box structure; the inner cavity 2 is used to contain ice cubes and water. Among them, the cooling pipe 3 can be made of stainless steel pipe; the filter 4 can be set with filters of different meshes as needed, or multiple filters of different meshes can be installed at the other end of the cooling pipe 3 at the same time to filter dust of different particle sizes. The filter 4 can be specifically set on the end cover, and then fixedly connected to the other end of the cooling pipe 3 through the end cover by threads. The shell 1 can also be prepared by welding with an insulation board to achieve the insulation function of the shell 1.

[0031] The embodiment of the present invention fills ice cubes and water in the inner cavity 2 to form an ice-water mixture, uses the ice-water mixture to cool the cooling tube 3, and performs heat exchange between the cooled cooling tube 3 and the air passing through the cooling tube 3 to refrigerate the air passing through the cooling tube 3, so that the air blown into the tunnel becomes cold wind, thereby reducing the ambient temperature in the tunnel. Compared with traditional tunnel refrigeration technology, the present invention does not need to add additional equipment such as air conditioners in the tunnel, and uses the air supply system and the air refrigeration device to cool the supply air in the tunnel, making the refrigeration in the tunnel more economical.

[0032] In some embodiments, one end of the cooling pipe 3 is connected to a connecting pipe 5, and one end of the connecting pipe 5 is fixedly connected to one end of the cooling pipe 3 through a flange; the other end of the connecting pipe 5 is used to connect to the construction area ventilation pipe 6. By setting the connecting pipe 5, different types of connecting pipes 5 can be selected as needed to adapt to various types of construction area ventilation pipes 6.

[0033] like Figure 2 As shown, in some embodiments, the housing 1 is provided with a discharge window 7, the discharge window 7 is connected to the inner cavity 2, and a sealing window door 8 is provided at the discharge window 7 for blocking the discharge window 7; wherein the housing 1 can be set as a heat preservation box. By setting the discharge window 7, it is convenient to place ice cubes from the discharge window 7 into the inner cavity 2 after opening the sealing window door 8.

[0034] The shell 1 is also provided with a water inlet 9 and a water outlet 11, wherein the water inlet 9 is located at the top of the shell 1, and the water outlet 11 is located at the bottom of the shell 1; the water inlet 9 is provided with an inlet plug 10 for blocking the water inlet 9, and the water outlet 11 is provided with an outlet plug 12 for blocking the water outlet 11; the inlet plug 10 and the outlet plug 12 are both detachably connected to the shell 1 through threads. The arrangement of the water inlet 9 and the water outlet 11 facilitates the injection of cold water into the inner cavity 2 through the water inlet 9, and the discharge of water in the inner cavity 2 through the water outlet 11; at the same time, after removing the inlet plug 10 and the outlet plug 12, a water pump can also be arranged to inject cold water in the cold water tank from the water inlet 9 into the inner cavity 2, and then the water in the inner cavity 2 is transported to the cold water tank through the pipeline from the water outlet 11, so as to realize the cooling water circulation in the inner cavity 2.

[0035] In some embodiments, a temperature sensor 13 and a wind speed sensor 14 are fixedly provided on the cooling pipe 3; the temperature sensor 13 is used to detect the temperature of the air passing through the cooling pipe 3; the wind speed sensor 14 is used to detect the moving speed of the air passing through the cooling pipe 3. A control display device can be provided, the control display device is electrically connected to the temperature sensor 13 and the wind speed sensor 14, and the temperature data collected by the temperature sensor 13 and the wind speed data collected by the wind speed sensor 14 can be obtained by using the control display device, and the collected temperature data and wind speed data can be displayed, so that the staff can understand the ambient temperature and air supply speed in real time.

[0036] In some embodiments, a temperature sensor 13 and a wind speed sensor 14 are provided at the air inlet and the air outlet of the cooling pipe 3; the temperature sensors 13 provided at the air inlet and the air outlet are used to collect the temperature of the air passing through the cooling pipe 3 at the air inlet and the air outlet; the wind speed sensors 14 provided at the air inlet and the air outlet are used to collect the wind speed passing through the cooling pipe 3 at the air inlet and the air outlet. The air inlet is located at one end of the cooling pipe 3, and the air outlet is located at the other end of the cooling pipe 3.

[0037] A control device is provided, and the control device is electrically connected to all the temperature sensors 13 and the wind speed sensors 14. The control device receives temperature data collected by the temperature sensors 13 provided at the air inlet and the air outlet; the control device receives wind speed data passing through the cooling pipe 3 provided at the air inlet and the air outlet, and controls the rotation speed of the fan of the ventilation equipment in the construction area through feedback of the wind speed data to ensure sufficient air supply in the tunnel.

[0038] A display device electrically connected to the control device is provided to display the temperature data and wind speed data collected by the control device through the display device; the temperature data is the temperature collected by the temperature sensor 13 provided at the air inlet and the air outlet; the display device is provided so that the staff can understand the air cooling effect through the display device, and when the air temperature at the air outlet is too high, ice cubes can be added to the inner cavity 2 in time. The wind speed passing through the cooling pipe 3 provided at the air inlet and the air outlet is displayed through the display device; so that the staff can intuitively know the air supply speed of the air passing through the cooling pipe 3. Figure 3 As shown, the connecting pipe 5 includes a pipe body 16, one end of which is fixedly provided with a first connecting flange 18, the other end of which is fixedly provided with a connecting threaded pipe 15, a cam 17 is fixedly sleeved on the pipe body 16, the first connecting flange 18 is fixedly connected to one end of the cooling pipe 3 via a flange, and the connecting threaded pipe 15 or the pipe body 16 is used to connect the construction area ventilation pipe 6.

[0039] The connecting threaded pipe 15 can be used for threaded matching connection with the construction area ventilation pipe 6. The setting of the boss 17 facilitates the connection of the ventilation hose. That is, when the construction area ventilation pipe 6 is a ventilation hose, the construction area ventilation pipe 6 can be sleeved on the boss 17, and then a rope or steel wire can be used to wrap it around the outside of the construction area ventilation pipe 6, so that the construction area ventilation pipe 6 can be sleeved on the pipe body 16 between the boss 17 and the connecting flange 18, so as to utilize the boss 17 to limit the construction area ventilation pipe 6 from falling off the pipe body 16.

[0040] like Figure 4 As shown, a second connecting flange 19 is welded to one end of the cooling pipe 3, and the second connecting flange 19 is also welded and fixed to the housing 1, and the first connecting flange 18 is flange-connected with the second connecting flange 19. The housing 1 may be a square box structure, and when the housing 1 is a square box structure, the discharge window 7 is opened at the top of the square box structure.

[0041] like Figure 5 As shown, the housing 1 may also be a cylindrical box structure. When the housing 1 is a cylindrical box structure, a boss 21 is welded to the top of the housing 1 , and the discharge window 7 is opened on the boss 21 .

[0042] like Figure 6As shown, at least one hook 21 is provided on the housing 1, and the hook 21 is fixedly connected to the housing 1. A plurality of hook mounting holes 22 are provided at the top, bottom, front and rear ends of the housing 1, and each hook mounting hole 22 is a threaded hole. The hook 21 is threadedly matched with the hook mounting hole 22 to fix the hook 21 on the housing 1. By providing a plurality of hook mounting holes 22 in various positions, the hanging position of the housing 1 can be selected according to needs.

[0043] like Figure 7 and Figure 8 As shown, in some embodiments, a plurality of outer guide grooves 23 are provided on the outer tube wall of the cooling tube 3, and a plurality of inner guide grooves 24 are provided on the inner tube wall of the cooling tube 3; the plurality of outer guide grooves 24 and the plurality of inner guide grooves 24 extend along the length direction of the cooling tube 3. The plurality of outer guide grooves 23 and the plurality of inner guide grooves 24 are spiral grooves. Each of the inner guide grooves 24 is arranged between two adjacent outer guide grooves 23; the cross section of the outer guide groove 23 is an inverted trapezoidal structure, and the cross section of the inner guide groove 24 is a trapezoidal structure.

[0044] The embodiment of the present invention is convenient for improving the heat exchange efficiency between the ice-water mixture in the inner cavity 2 and the air in the cooling pipe 3 by setting the spirally distributed outer guide groove 23 and the inner guide groove 24, thereby improving the air cooling efficiency. At the same time, the inner guide groove 24 is set as a spiral delay structure, so that when the air passes through the cooling pipe 3, a vortex can be formed, so that the air at different spatial positions in the cooling pipe 3 can be mixed, so that all the air in the cooling pipe 3 can be evenly cooled; it can be seen that the embodiment of the present invention can also solve the technical problem of uneven air cooling in traditional air refrigeration devices.

[0045] In some other embodiments, an embodiment of the present invention provides a cooling method for a high geothermal tunnel face construction area, wherein the above-mentioned high geothermal tunnel face construction area ventilation pipe cooling device is used to cool the air passing through the construction area ventilation pipe 6 to achieve cooling of the high geothermal tunnel face construction area.

[0046] like Fig. 9As shown, a plurality of high geothermal tunnel face construction area ventilation pipe refrigeration devices are provided, and the plurality of high geothermal tunnel face construction area ventilation pipe refrigeration devices are sequentially connected through the construction area ventilation pipe 6 along the air supply direction or the air delivery direction of the construction area ventilation pipe 6, and two adjacent high geothermal tunnel face construction area ventilation pipe refrigeration devices are connected through the construction area ventilation pipe 6, that is, in the adjacent high geothermal tunnel face construction area ventilation pipe refrigeration devices, the other end of the cooling pipe 3 of the previous high geothermal tunnel face construction area ventilation pipe refrigeration device is connected to one end of the cooling pipe 3 of the next high geothermal tunnel face construction area ventilation pipe refrigeration device through the construction area ventilation pipe 6.

[0047] The embodiment of the present invention sets multiple high ground temperature tunnel face construction area ventilation pipe refrigeration devices, which is convenient for supplying air in a long distance tunnel face construction area, using multiple refrigeration devices to cool the air passing through the construction area ventilation pipe 6 in sections, so as to prevent the air temperature from being high when the air is supplied over a long distance, and cooling only at the tail end, which will lead to poor cooling effect or insufficient cooling. Therefore, using multiple refrigeration devices to cool the air passing through the construction area ventilation pipe 6 in sections can improve the cooling efficiency and cooling effect.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the concept and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A ventilation pipe refrigeration device for a high ground temperature tunnel face construction area, characterized in that: The invention comprises a cooling pipe (3), wherein an outer shell (1) is disposed outside the cooling pipe (3), a sealed inner cavity (2) is formed between the outer tube wall of the cooling pipe (3) and the outer shell (1), one end of the cooling pipe (3) is used to connect to a ventilation pipe (6) in a construction area, and a filter screen (4) is fixedly disposed on the other end of the cooling pipe (3), the outer shell (1) is coated with thermal insulation cotton or the outer shell (1) is configured as a thermal insulation box structure; the inner cavity (2) is used to contain ice cubes and water.

2. The high ground temperature tunnel face construction area ventilation pipe refrigeration device according to claim 1 is characterized in that: One end of the cooling pipe (3) is connected to a connecting pipe (5), and one end of the connecting pipe (5) is fixedly connected to one end of the cooling pipe (3) via a flange; the other end of the connecting pipe (5) is used to connect to the construction area ventilation pipe (6).

3. The high ground temperature tunnel face construction area ventilation pipe refrigeration device according to claim 2 is characterized in that: The connecting pipe (5) comprises a pipe body (16), one end of which is fixedly provided with a first connecting flange (18), the other end of which is fixedly provided with a connecting threaded pipe (15), a convex disc (17) is fixedly sleeved on the pipe body (16), the first connecting flange (18) is fixedly connected to one end of the cooling pipe (3) via a flange, and the connecting threaded pipe (15) or the pipe body (16) is used to connect the construction area ventilation pipe (6).

4. The high ground temperature tunnel face construction area ventilation pipe refrigeration device according to claim 1 is characterized in that: The outer shell (1) is provided with a material discharge window (7), the material discharge window (7) is connected to the inner cavity (2), and a sealing window door (8) for sealing the material discharge window (7) is provided at the material discharge window (7).

5. The high ground temperature tunnel face construction area ventilation pipe refrigeration device according to claim 4 is characterized in that: The shell (1) is also provided with a water inlet (9) and a water outlet (11); the water inlet (9) is located at the top end of the shell (1), and the water outlet (11) is located at the bottom end of the shell (1); the water inlet (9) is provided with an inlet plug (10) for blocking the water inlet (9), and the water outlet (11) is provided with an outlet plug (12) for blocking the water outlet (11); the inlet plug (10) and the outlet plug (12) are both detachably connected to the shell (1) via threads.

6. The high ground temperature tunnel face construction area ventilation pipe refrigeration device according to claim 1 is characterized in that: At least one hook (21) is provided on the housing (1), and the hook (21) is fixedly connected to the housing (1).

7. The high ground temperature tunnel face construction area ventilation pipe refrigeration device according to claim 1 is characterized in that: A temperature sensor (13) and a wind speed sensor (14) are fixedly arranged on the cooling pipe (3); the temperature sensor (13) is used to detect the temperature of air passing through the cooling pipe (3); and the wind speed sensor (14) is used to detect the moving speed of air passing through the cooling pipe (3).

8. The high ground temperature tunnel face construction area ventilation pipe refrigeration device according to claim 1 is characterized in that: A plurality of outer guide grooves (23) are provided on the outer tube wall of the cooling tube (3), and a plurality of inner guide grooves (24) are provided on the inner tube wall of the cooling tube (3); the plurality of outer guide grooves (23) and the plurality of inner guide grooves (24) all extend along the length direction of the cooling tube (3).

9. The high ground temperature tunnel face construction area ventilation pipe refrigeration device according to claim 8, characterized in that: The plurality of outer guide grooves (23) and the plurality of inner guide grooves (24) are all spiral grooves.

10. A method for cooling a high ground temperature tunnel face construction area, characterized in that: The high geothermal tunnel face construction area ventilation pipe refrigeration device as claimed in any one of claims 1 to 8 is used to cool the air passing through the construction area ventilation pipe (6) to achieve cooling of the high geothermal tunnel face construction area.

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