Non-stop tunneling cooling system and non-stop tunneling cooling method for tunnel boring machine

Abstract

The present invention belongs to the technical field of cooling systems for tunnel boring machines, and specifically relates to a non-stop tunnel boring cooling system and a non-stop tunnel boring cooling method for tunnel boring machines. The non-stop tunnel boring cooling system for tunnel boring machines of the present invention includes an internal circulation cooling system, an external circulation cooling system and a main heat exchanger, and also includes a cold storage system. The cold storage system can perform heat exchange with the main heat exchanger when the external circulation cooling system stops, so that the tunnel boring machine can still work normally. When the pipe section is connected, the external circulation cooling system and the main heat exchanger are used again for heat exchange. Since the tunnel boring machine will not stop due to the connection of the pipe section during the whole process, the tunnel boring machine has a higher tunnel boring efficiency. In the non-stop tunnel boring cooling method for tunnel boring machines of the present invention, when the tunnel boring machine connects the pipe section, the cooling system of the tunnel boring machine can also be cooled by the cold storage system, so that the tunnel boring machine can work normally and the tunnel boring machine has a higher tunnel boring efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of cooling systems for tunnel boring machines, and in particular relates to a non-stop tunnel boring cooling system and a non-stop tunnel boring cooling method for tunnel boring machines. Background Art

[0002] During the working process of the shield machine, the excavation of the soil by the shield machine will generate a large amount of load on the shield machine's drive motor, air compressor and other equipment, causing the drive motor and air compressor and other equipment to overheat, so these equipment need to be cooled to ensure the normal operation of the equipment and the normal construction of the shield machine. The existing shield machine uses an internal circulation cooling system to cool the drive motor and air compressor and other equipment, and then the water of the external circulation cooling system flows through the internal water cooler to cool the water in the internal circulation cooling system. For example, the Chinese utility model patent with the authorization announcement number CN207469352U discloses a TBM internal circulation water system. The cold water outside the tunnel enters through the water inlet pipeline of the external circulation water system, and then flows through the plate heat exchanger to exchange heat with the water in the internal circulation water system, and then flows out from the water outlet pipeline of the external circulation water system to the outside of the tunnel. After being cooled, the water in the internal circulation water system can cool the working equipment of the shield machine.

[0003] When the shield machine is performing initial operation, the water inlet pipeline and the water outlet pipeline are usually composed of a water inlet drum and a water outlet drum respectively. As the shield machine continues to advance, the water inlet pipeline and the water outlet pipeline need to be continuously extended to meet the demand. The usual practice is to connect the pipe sections on the shield machine and connect the pipe sections to the corresponding water inlet pipeline and water outlet pipeline respectively. When connecting the pipe sections, the supply of external circulating cooling water will be interrupted. At this time, due to the lack of cooling water, the shield machine also needs to stop excavating. Generally, the pipe section needs to be extended every 30 meters of excavation, which causes the shield machine to be repeatedly shut down, thereby wasting construction time and low excavation efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a non-stop tunneling cooling system for a tunnel boring machine to solve the problem of low tunneling efficiency caused by the connection of pipe sections in the prior art tunnel boring machine, and also to provide a non-stop tunneling cooling method for a tunnel boring machine to solve the problem of low tunneling efficiency caused by the cooling method of the prior art tunnel boring machine that requires the tunnel boring machine to be repeatedly stopped during the tunneling process.

[0005] The technical solution of the non-stop tunneling cooling system of the tunnel boring machine of the present invention is:

[0006] A non-stop tunneling cooling system for a tunnel boring machine comprises: a main heat exchanger; an internal circulation cooling system connected to the main heat exchanger; an external circulation cooling system comprising an external circulation pipeline, the external circulation cooling system being used to perform heat exchange with the internal circulation cooling system through the main heat exchanger; and a cold storage system being connected to the main heat exchanger and moving with the tunnel boring machine, and being used to perform heat exchange with the internal circulation cooling system through the main heat exchanger to cool the tunnel boring machine.

[0007] The technical effect of the present invention is that the non-stop tunneling cooling system of the tunnel boring machine of the present invention includes a cold storage system that moves with the tunnel boring machine. The cold storage system is connected to the main heat exchanger and can replace the external circulation cooling system to exchange heat with the internal circulation cooling system through the main heat exchanger to cool the tunnel boring machine.

[0008] Furthermore, the external circulation cooling system is configured to exchange heat with the internal circulation cooling system through the main heat exchanger when the tunnel boring machine is operating normally, and the cold storage system is configured to exchange heat with the internal circulation cooling system through the main heat exchanger instead of the external circulation cooling system when the tunnel boring machine connects pipe sections to extend the external circulation pipeline.

[0009] When the tunnel boring machine is working normally, the external circulation cooling system stops when the tunnel boring machine needs to connect a pipe section to extend the external circulation pipeline. At this time, the cold storage container and the main heat exchanger exchange heat, so that the tunnel boring machine can still work normally. When the pipe section is connected, the external circulation cooling system and the main heat exchanger exchange heat again. Since the tunnel boring machine will not stop due to connecting the pipe section during the whole process, the construction efficiency is relatively high.

[0010] Furthermore, the main heat exchanger is a plate cooler, and the plate cooler is connected in series to the external circulation pipeline.

[0011] Furthermore, the cold storage system is arranged on the trailer of the tunnel boring machine.

[0012] Furthermore, the cold storage system comprises:

[0013] cold storage container;

[0014] a cold storage circulation pipeline, both ends of which are connected to the cold storage container; and

[0015] A refrigeration module, wherein the cold end of the refrigeration module is arranged on the cold storage circulation pipeline, and the hot end of the refrigeration module is connected to the external circulation pipeline.

[0016] Furthermore, the cold storage system further comprises:

[0017] A water supply pipeline is used to inject water into the cold storage container, one end of the water supply pipeline is connected to the external circulation pipeline, and the other end is connected to the cold storage container.

[0018] Water is added to the cold storage container through the water supply pipeline. When the water in the cold storage container needs to be cooled, the water in the cold storage container flows in the cold storage circulation pipeline. The refrigeration module will use the water in the external circulation pipeline to cool the water in the cold storage circulation pipeline, and the cold storage container stores the cooled water.

[0019] Furthermore, the external circulation pipeline includes a water inlet pipeline and a water return pipeline, and the hot end of the refrigeration module is arranged on the water return pipeline of the external circulation pipeline.

[0020] The beneficial effect is that since the hot end of the refrigeration module is connected to the return pipe of the external circulation pipe, the hot end of the refrigeration module is cooled by the high-temperature cooling water in the return pipe, which will not affect the normal cooling of the main heat exchanger by the water in the water inlet pipe, and can realize the effective utilization of the high-temperature cooling water to be discharged outside the tunnel.

[0021] Furthermore, the return water pipeline comprises:

[0022] Backwater main road; and

[0023] A water return bypass, both ends of which are connected to the water return main road.

[0024] Among them, the hot end of the refrigeration module is configured on the return water bypass, and a bypass valve for controlling the on-off of the return water bypass is provided on the return water bypass. A main valve connected in parallel with the bypass valve is provided on the return water main road, and the main valve is used to control the on-off of the return water main road.

[0025] Its beneficial effect is that by setting up a return water bypass and setting the hot end of the refrigeration module on the return water bypass, the cooling process of the refrigeration module on the water in the cold storage circulation pipeline can be more conveniently controlled, and the arrangement of the structure on the tunneling machine is convenient.

[0026] Furthermore, a water treatment device is serially connected to the return water bypass upstream of the hot end of the refrigeration module.

[0027] Its beneficial effect is that the water treatment instrument can pre-treat the high-temperature cooling water that will enter the refrigeration module, remove impurities such as scale in the high-temperature cooling water, and prevent impurities such as scale from adhering to the refrigeration module and affecting the heat exchange efficiency.

[0028] Furthermore, the diameter of the water return bypass is equal to that of the water return main line.

[0029] The beneficial effect is that the diameters of the return bypass and the return main line are equal, and there is no obvious difference when water flows through the return bypass or the return main line, so that the return pipe can discharge water normally in both cases.

[0030] Furthermore, the cold storage container includes at least two independent cold storage tanks, and the at least two independent cold storage tanks are connected by a cold storage connecting pipeline, and the cold storage connecting pipeline is provided with a cold storage tank valve for controlling the on-off thereof.

[0031] Furthermore, the cold storage system further comprises: a water supply pipeline, used for injecting water into the cold storage container, one end of the water supply pipeline is connected to the external circulation pipeline, and the other end is connected to the cold storage container;

[0032] The at least two independent cold storage tanks include:

[0033] an output cold storage tank, used to be connected to the main heat exchanger and supply water thereto for heat exchange;

[0034] The input cold storage tank is connected to the water supply pipeline and stores the water supplied by the water supply pipeline.

[0035] Among them, one end of the cold storage circulation pipeline is connected to the input cold storage tank, and the other end is connected to the output cold storage tank, so as to transport the water in the input cold storage tank to the output cold storage tank after cooling.

[0036] The beneficial effect is that the output cold storage tank can store cooled water. After the cold storage system is activated, the water in the output cold storage tank and the water that becomes hot after heat exchange with the main heat exchanger will first enter the input cold storage tank. It is not easy to quickly enter the output cold storage tank and mix with the cold water in the output cold storage tank, which is beneficial to slow down the heating rate of the cold water in the output cold storage tank.

[0037] Furthermore, the external circulation pipeline includes a water inlet pipeline and a return water pipeline, the output cold storage tank is connected to the water inlet pipeline through the cold storage output pipeline to achieve communication with the main heat exchanger, and one end of the water make-up pipeline is connected to the return water pipeline; when the cold storage system is activated, the cold storage container, the cold storage output pipeline, part of the water inlet pipeline, the main heat exchanger, part of the return water pipeline and the water make-up pipeline form a circulation loop.

[0038] The beneficial effect is that since the entire circulation loop utilizes both part of the water inlet pipeline and part of the water outlet pipeline, fewer pipelines are required to form the circulation loop, the structure is simpler, and the cost is lower.

[0039] Furthermore, there are two cold storage tanks, and there are more than two cold storage connecting pipelines between the two cold storage tanks, and the cold storage connecting pipelines are arranged at intervals in the up-down direction.

[0040] The beneficial effect is that the multiple connecting pipelines can increase the flow capacity between the cold storage tanks, so that the water between the two cold storage tanks can flow quickly.

[0041] Furthermore, the cold storage system also includes: a water replenishment pipeline, used to inject water into the cold storage container; the external circulation pipeline includes a water inlet pipeline and a water return pipeline, the cold storage container and the water inlet pipeline are connected through a cold storage output pipeline to achieve communication between the cold storage container and the main heat exchanger, one end of the water replenishment pipeline is connected to the return pipeline, and the other end is connected to the cold storage container; when the cold storage system is activated, the cold storage container, the cold storage output pipeline, part of the water inlet pipeline, the main heat exchanger, part of the return pipeline and the water replenishment pipeline form a circulation loop.

[0042] The beneficial effect is that since the entire circulation loop utilizes both part of the water inlet pipeline and part of the water outlet pipeline, fewer pipelines are required to form the circulation loop, the structure is simpler, and the cost is lower.

[0043] Furthermore, the cold storage system also includes: a water supply pipeline for injecting water into the cold storage container; the non-stop excavation cooling system of the tunnel boring machine includes a cooling control system, a liquid level sensor is provided in the cold storage container, the liquid level sensor is connected to the cooling control system, a liquid level control valve is connected in series on the water supply pipeline, the liquid level control valve is connected to the cooling control system, and the cooling control system is configured to control the liquid level control valve to close when the liquid level sensor detects that the liquid level in the cold storage container reaches the highest level.

[0044] The beneficial effect is that the liquid level sensor can detect the water level in the cold storage container, so that the operator can control the water replenishment pipeline according to the water level, thereby controlling the amount of water in the cold storage container.

[0045] Furthermore, the liquid level sensor is a static pressure liquid level gauge installed at the bottom of the cold storage container, and the static pressure liquid level gauge is used to feed back the liquid level data of the cold storage container to the cooling control system.

[0046] The beneficial effects are: the static pressure level meter has a relatively low cost and a strong anti-interference capability.

[0047] Furthermore, a temperature sensor is provided in the cold storage container, and the temperature sensor is used to detect the temperature of water in the cold storage container.

[0048] The beneficial effects are: the temperature sensor can facilitate the operator to understand the temperature of the water in the cold storage container more accurately, so as to reasonably select the refrigeration time of the refrigeration module, which is conducive to saving energy; in addition, the personnel of the connecting pipe section can timely adjust the progress and work efficiency of the connecting pipe section according to the real-time temperature of the water in the cold storage system.

[0049] A technical solution of the non-stop tunneling cooling method of the tunnel boring machine of the present invention is:

[0050] A non-stop tunneling cooling method for a tunneling machine, wherein a main heat exchanger, an internal circulation cooling system, an external circulation cooling system and a cold storage system are arranged on the tunneling machine, wherein the cold storage system comprises a refrigeration module and a cold storage container for storing low-temperature cooling water, wherein the cooling water in the cold storage container is provided by a return water pipeline of the external circulation cooling system, wherein the cold end of the refrigeration module exchanges heat with the high-temperature cooling water in the cold storage container, and the hot end of the refrigeration module exchanges heat with the high-temperature cooling water in the return water pipeline, and the cold storage system moves together with the tunneling machine;

[0051] Wherein, the non-stop excavation cooling method of the tunnel boring machine comprises:

[0052] When the tunnel boring machine is working normally, the external circulation cooling system exchanges heat with the internal circulation cooling system through the main heat exchanger, so as to cool the tunnel boring machine;

[0053] After the high-temperature cooling water in the return water pipeline is replenished into the cold storage container, refrigeration is performed through the refrigeration module;

[0054] After the high-temperature cooling water in the cold storage container becomes low-temperature cooling water, storing the low-temperature cooling water in the cold storage container;

[0055] When the external circulation pipeline of the external circulation cooling system stops working due to the connection of the pipe section, the cold storage system replaces the external circulation cooling system to exchange heat with the main heat exchanger to maintain the continuous excavation construction of the tunnel boring machine.

[0056] The technical effect of the present invention is as follows: a cold storage system is provided on the tunnel boring machine. When the tunnel boring machine is working normally and does not need to connect the pipe section, the external circulation cooling system cools the tunnel boring machine. When the tunnel boring machine needs to connect the pipe section to extend the external circulation pipeline, the external circulation cooling system stops. At this time, the cold storage system exchanges heat with the main heat exchanger, so that the tunnel boring machine can still work normally. When the pipe section is added, the external circulation cooling system exchanges heat with the main heat exchanger again. The external circulation cooling system and the cold storage system complement each other and can continuously cool the tunnel boring machine, ensuring that the tunnel boring machine can continue to dig, and the tunnel boring machine will not stop due to connecting the pipe section, so the construction efficiency is high.

[0057] Another technical solution of the non-stop excavation cooling method of the tunnel boring machine of the present invention is:

[0058] A non-stop tunneling cooling method for a tunneling machine, wherein a main heat exchanger, an internal circulation cooling system, an external circulation cooling system and a cold storage system are arranged on the tunneling machine, wherein the cold storage system comprises a refrigeration module and a cold storage container for storing low-temperature cooling water, wherein the cooling water in the cold storage container is provided by a return water pipeline of the external circulation cooling system, wherein the cold end of the refrigeration module exchanges heat with the high-temperature cooling water in the cold storage container, and the hot end of the refrigeration module exchanges heat with the high-temperature cooling water in the return water pipeline, and the cold storage system moves together with the tunneling machine;

[0059] Wherein, the non-stop excavation cooling method of the tunnel boring machine comprises:

[0060] The cold storage system exchanges heat with the internal circulation cooling system through the main heat exchanger;

[0061] Before the low-temperature cooling water in the cold storage container rises in temperature and is about to become high-temperature cooling water and is unable to exchange heat and cool the main heat exchanger, the external circulation cooling system is started;

[0062] While the external circulation cooling system exchanges heat and cools the main heat exchanger, it exchanges heat with the hot end of the refrigeration module through the return water pipeline, thereby cooling the high-temperature cooling water in the cold storage container;

[0063] After the temperature of the high-temperature cooling water in the cold storage container decreases, the external circulation cooling system stops working, and the cold storage system exchanges heat with the internal circulation cooling system through the main heat exchanger.

[0064] The technical effect of the present invention is as follows: during the long-distance excavation of the tunnel boring machine, the tunnel boring machine is cooled by the cold storage system first. When the temperature of the cooling water in the cold storage system rises and cannot be cooled further, the external circulation cooling system cools the tunnel boring machine and cools down the cooling water in the cold storage system. When the cooling water in the cold storage system is cooled to the required temperature, the cold storage system continues to cool the tunnel boring machine. Since the tunnel boring machine is mainly cooled by the cold storage system during the entire working process, the reliance on the external circulation cooling system is relatively small, which greatly reduces the impact of the external circulation cooling system on the tunnel boring process of the tunnel boring machine. It is not easy to stop the external circulation cooling system due to the connection of the pipe section and thus the tunnel boring machine can continue to operate and the excavation efficiency is relatively high. In addition, since the cold storage system performs a short-distance circulation when cooling, it does not need to rely on a water pump outside the tunnel. Therefore, in the long-distance excavation process, it is more energy-saving to use the cold storage system as the main cooling system. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1It is a structural schematic diagram of a non-stop tunneling cooling system for a tunnel boring machine according to the present invention;

[0066] Figure 2 for Figure 1 A schematic diagram of the partial structure of the water storage process of the cold storage container of the non-stop tunneling cooling system of the tunnel boring machine;

[0067] Figure 3 for Figure 1 A schematic diagram of the structure of the cold storage container;

[0068] Figure 4 for Figure 1 A schematic diagram of the local structure of the cooling process of the cooling container of the non-stop tunneling cooling system of the tunnel boring machine;

[0069] Figure 5 for Figure 3 A schematic diagram of the structure when the cold storage container in FIG. 1 stores water;

[0070] Figure 6 for Figure 1 A schematic diagram of the local structure of the non-stop tunneling cooling system of the tunnel boring machine when the plate heat exchanger is cooled by the external circulation cooling system after the cold storage is completed;

[0071] Figure 7 for Figure 1 A schematic diagram of the local structure of the cooling system of the tunnel boring machine during non-stop tunnel boring, in which the plate heat exchanger is cooled by the cold storage system;

[0072] In the figure: 1. Internal circulation cooling system; 2. Water supply pipeline; 3. Water inlet pipeline; 31. Water inlet pipe section of the machine body; 321. Water inlet pipe drum; 4. Return pipeline; 41. Water return pipe section of the machine body; 42. Water return pipe drum; 43. Main return line; 44. Water return bypass; 5. Plate cooler; 6. Manual ball valve; 7. Manual gate valve; 8. Pressure sensor; 9. Temperature sensor; 10. Overflow valve; 11. Check valve; 12. Pressure gauge; 13. Bag filter; 14. Flow meter; 15. Four pneumatic ball valves; 16. Second pneumatic ball valve; 17. Third pneumatic ball valve; 18. Cold storage circulation pipeline; 19. Condenser; 20. Compressor; 21. Evaporator; 22. Input cold storage tank; 23. Output cold storage tank; 24. Cold storage connecting pipeline; 25. Thermometer; 26. Shock-absorbing throat clamp; 27. Cold storage output pipeline; 28. Cold water release pump; 29. ​​Accumulator; 30. First pneumatic ball valve; 32. Pneumatic ball valve for cold storage tank; 33. Cold storage water pump; 34. Insulation material; 35. Water treatment instrument. DETAILED DESCRIPTION

[0073] The present invention is further described in detail below in conjunction with embodiments.

[0074] Specific embodiment 1 of the non-stop tunneling cooling system for a tunnel boring machine provided by the present invention:

[0075] like Figure 1 As shown, the non-stop tunneling cooling system for a tunnel boring machine provided by the present invention comprises an internal circulation cooling system 1, an external circulation cooling system, a main heat exchanger, a cold storage system and a cooling control system, wherein heat exchange is performed between the internal circulation cooling system 1 and the external circulation cooling system via the main heat exchanger. Since the internal circulation cooling system 1 is the same as the internal circulation cooling system in the prior art, it does not involve the main improvements of the present invention and will not be described in detail herein.

[0076] like Figure 1 As shown, the external circulation cooling system includes an external circulation pipeline and a water supply pipeline 2, and the external circulation pipeline includes an inlet pipeline 3 and a return pipeline 4, wherein the inlet pipeline 3 is used to transport the low-temperature cooling water outside the tunnel into the main heat exchanger, and the return pipeline 4 is used to transport the high-temperature cooling water obtained after heat exchange with the main heat exchanger to the outside of the tunnel.

[0077] like Figure 1 As shown, in this embodiment, the main heat exchanger is a plate cooler 5, which is connected in series to the external circulation pipeline. A temperature gauge 25, a pressure gauge 12 and a shock-absorbing throat clamp 26 are also connected in series upstream and downstream of the plate cooler 5 on the external circulation pipeline. The water inlet pipeline 3 includes a body water inlet pipe section 31 and a water inlet pipe reel 321 connected to the body water inlet pipe section 31, wherein the body water inlet pipe section 31 is arranged on the body of the tunneling machine, and the body water inlet pipe section 31 is connected in series with a manual ball valve 6, a manual gate valve 7, a pressure sensor 8, a temperature sensor 9, a relief valve 10, a one-way valve 11, a pressure gauge 12, a bag filter 13 and a flow meter 14 and other structures. The return water pipeline 4 includes a body return water pipe section 41 and a return water pipe drum 42. The body return water pipe section 41 is arranged on the body of the tunnel boring machine, and includes a main return water pipe section and a side return water pipe section. The main return water pipe section and the return water pipe drum 42 together constitute a return water main path 43 of the return water pipeline 4, and the side return water pipe section constitutes a return water bypass path 44 of the return water pipeline 4. The return water main path 43 is provided with a fourth pneumatic ball valve 15 for controlling the on-off of the pipeline, and the return water bypass path 44 is provided with a second pneumatic ball valve 16 and a third pneumatic ball valve 17 for controlling the on-off of the pipeline, and a one-way valve 11 is also provided on the return water bypass path 44.

[0078] like Figure 1 and Figure 2 As shown, the cold storage system of the present invention includes a cold storage container, a refrigeration module and a cold storage circulation pipeline 18, wherein the refrigeration module includes a condenser 19, a compressor 20 and an evaporator 21, the condenser 19 constitutes the hot end of the refrigeration module and is arranged on the return water bypass 44, and the evaporator 21 constitutes the cold end of the refrigeration module and is arranged on the cold storage circulation pipeline 18. In this embodiment, in order to more reasonably utilize the space on the tunnel boring machine, as shown in FIG. Figure 2 and Figure 3 As shown, the cold storage container includes two cold storage tanks, one is an input cold storage tank 22, and the other is an output cold storage tank 23. The input cold storage tank 22 and the output cold storage tank 23 are independent of each other, and are connected by four cold storage connecting pipes 24 arranged at intervals in the vertical direction. The cold storage connecting pipe 24 is provided with a manual gate valve 7 for controlling the channel of the cold storage connecting pipe 24. The manual gate valve 7 constitutes a cold storage tank valve. Since the input cold storage tank 22 and the output cold storage tank 23 are connected by the cold storage connecting pipe 24, the input cold storage tank 22 and the output cold storage tank 23 can be regarded as a large cold storage tank. A cold storage tank pneumatic ball valve 32 is also provided at the bottom of the input cold storage tank 22, and the cold storage tank pneumatic ball valve 32 is used to discharge water in the input cold storage tank 22.

[0079] like Figure 1 As shown, one end of the water supply pipeline 2 is connected to the return water pipeline 4, and the other end is connected to the input cold storage tank 22. The high-temperature cooling water in the return water pipeline 4 can enter the input cold storage tank 22 through the water supply pipeline 2, and enter the output cold storage tank 23 through the cold storage connecting pipeline 24. One end of the cold storage circulation pipeline 18 is connected to the input cold storage tank 22, and the other end is connected to the output cold storage tank 23. A cold storage water pump 33 is arranged on the cold storage circulation pipeline 18. The cold storage water pump 33 can pump the high-temperature cooling water in the input cold storage tank 22 into the cold storage circulation pipeline 18 and flow through the evaporator 21 of the refrigeration module. Under the cooling action of the refrigeration module, the high-temperature cooling water is cooled into low-temperature cooling water and injected into the output cold storage tank 23 along the cold storage circulation pipeline 18.

[0080] A cold storage output pipeline 27 is arranged between the output cold storage tank 23 and the water inlet pipeline 3. A pressure sensor 8, a cold water release pump 28, a one-way valve 11 and an accumulator 29 are arranged in series on the cold storage output pipeline 27. When the cold storage system is activated, the external circulation cooling system stops working, and the input cold storage tank 22, the output cold storage tank 23, the cold storage output pipeline 27, part of the water inlet pipeline 3, the main heat exchanger, part of the water outlet pipeline and the water supply pipeline 2 form a circulation loop. The cold water release pump 28 can pump the low-temperature cooling water in the output cold storage tank 23 into the water inlet pipeline 3. The low-temperature cooling water flows through the plate cooler 5 and then exchanges heat with the plate cooler 5 to obtain high-temperature cooling water. The high-temperature cooling water enters the input cold storage tank 22 and mixes with the low-temperature cooling water in the input cold storage tank 22, and then repeats the above cycle. In this process, the tunnel boring machine is cooled.

[0081] Liquid level sensors and temperature sensors 9 are provided in both the input cold storage tank 22 and the output cold storage tank 23, wherein the temperature sensor 9 is used to detect the temperature of the water in the cold storage tank to control the working timing of the cooling module; the liquid level sensor is a pressure sensor 8 installed at the bottom of the cold storage tank, and the cooling control system converts the pressure signal fed back by the pressure sensor 8 into liquid level data. In order to facilitate the control of the on-off of the water supply pipeline 2, a first pneumatic ball valve 30 for controlling the on-off of the pipeline is also provided on the water supply pipeline 2. The first pneumatic ball valve 30 is used as a liquid level control valve and is connected to the cooling control system. When the liquid level in the input cold storage tank 22 and the output cold storage tank 23 reaches the highest level, the cooling control system controls the first pneumatic ball valve 30 to close the water supply pipeline 2, and no longer supplies water to the input cold storage tank 22. Figure 3 and Figure 5 As shown, both the input cold storage tank 22 and the output cold storage tank 23 are wrapped with a heat-insulating material 34 to reduce the temperature rise rate of the cold water in the cold storage tanks. In this embodiment, the heat-insulating material is rigid foam polyurethane.

[0082] Since the high-temperature cooling water in the return pipe 4 contains impurities and scale, the impurities and scale attached to the condenser 19 will affect the heat exchange efficiency. Therefore, the present invention is connected in series with a water treatment device 35 upstream of the condenser 19 on the return bypass 44. The water treatment device 35 can remove impurities and scale in the high-temperature cooling water to prevent the impurities and scale from affecting the heat exchange efficiency of the condenser 19.

[0083] The use process of the non-stop tunneling cooling system of the tunnel boring machine of the present invention is as follows:

[0084] (1) The water storage process of the cold storage tank is as follows Figure 2 As shown, when the tunnel boring machine is excavating normally, the external circulation cooling system is running, and the water inlet pipe 3 inputs the low-temperature cooling water outside the tunnel into the external circulation cooling system. When the cooling water is transported to the position of the plate cooler 5, the plate cooler 5 performs heat exchange with the internal circulation cooling system 1 to cool the tunnel boring machine. The low-temperature cooling water becomes high-temperature cooling water and is transported to the return water pipe 4. At this time, the first pneumatic ball valve 30 is in the open state, the second pneumatic ball valve 16, the third pneumatic ball valve 17 and the fourth pneumatic ball valve 15 are in the closed state, and the high-temperature external cooling water is transported into the input cold storage tank 22 and the output cold storage tank 23 through the water supply pipe 2. When the pressure sensor 8 detects that the water level in the two cold storage tanks reaches full, the first pneumatic ball valve 30 on the water supply pipe 2 is closed to complete the water storage process of the cold storage tank.

[0085] (2) The cold storage process of the cold storage pool is as follows Figure 4As shown, the second pneumatic ball valve 16 and the third pneumatic ball valve 17 on the return water bypass 44 are opened, and the cold storage water pump 33 is turned on to start the refrigeration module. The high-temperature cooling water input into the cold storage tank 22 flows along the cold storage circulation pipeline 18 to the evaporator 21 of the refrigeration module. The evaporator 21 brings the heat in the high-temperature cooling water in the cold storage circulation pipeline 18 to the condenser 19, thereby cooling the high-temperature cooling water in the cold storage circulation pipeline 18. The temperature of the cooling medium in the condenser 19 increases and is higher than the temperature of the high-temperature cooling water in the return water bypass 44. Therefore, the medium temperature in the condenser 19 can be cooled by a large amount of high-temperature cooling water in the return water bypass 44, thereby achieving the purpose of using the high-temperature cooling water in the return water pipeline to cool the water in the cold storage circulation pipeline. In this way, the high-temperature cooling water in the return water pipeline can be fully utilized, and the cooling efficiency of the refrigeration module for the water in the cold storage system can be accelerated.

[0086] The water in the return bypass 44 eventually flows out of the tunnel, and the water in the cold storage circulation pipeline 18 is cooled and flows into the output cold storage tank 23 and mixes with the water in the input cold storage tank 22. Usually, the water in the two cold storage tanks needs to go through multiple cooling cycles to cool to the set temperature to complete the cold storage process. Figure 6 As shown, the first pneumatic ball valve 30, the second pneumatic ball valve 16 and the third pneumatic ball valve 17 are closed, and the fourth pneumatic ball valve 15 is opened, so that the high-temperature external cooling water obtained after heat exchange with the plate cooler 5 flows directly from the return water main path 43 to the outside of the tunnel.

[0087] (3) Figure 7 As shown, when the tunnel boring machine needs to connect a pipe section after excavating a certain distance, the manual gate valve on the water inlet pipeline 3 is closed, the operation of the external circulation cooling system is stopped, the cooling water pump 28 and the first pneumatic ball valve 30 on the water supply pipeline 2 are opened, and the cold water in the cold storage system is used to exchange heat with the plate cooler 5 to cool the tunnel boring machine. While the cold storage system and the plate cooler 5 are exchanging heat, the pipe section is connected. In this process, the real-time temperature of the water in the cold storage system is used to remind the personnel who connect the pipe section to complete the operation as soon as possible.

[0088] (4) After the pipe section is connected, Figure 4 As shown, the second pneumatic ball valve 16 and the third pneumatic ball valve 17 are opened, the first pneumatic ball valve 30 and the fourth pneumatic ball valve 15 are closed, the cold storage water pump 33 is turned on, the external circulation cooling system is used again to exchange heat with the plate cooler 5, and the cold storage energy storage process is performed again until the water temperature in the cold storage tank reaches the minimum temperature required for cold storage.

[0089] Since the cold storage system can be used to cool the tunnel boring machine during the above-mentioned process of connecting the pipe section, the tunnel boring machine does not need to be shut down and can still work normally, so the tunneling efficiency of the tunnel boring machine is relatively high.

[0090] In addition to the above-mentioned usage, the non-stop tunneling cooling system of the tunnel boring machine of the present invention has other usage methods. Specifically, in the water filling process of the input cold storage tank in the above-mentioned usage method, the cold storage tank valve on the cold storage connecting pipeline is closed, and in the cold storage energy storage process, the cold storage tank valve is opened. When the cold storage system works to exchange heat with the main heat exchanger, the cold storage tank valve is closed, so that the heated water after heat exchange with the main heat exchanger will not mix with the cold water in the output cold storage tank.

[0091] Specific embodiment 2 of the non-stop tunneling cooling system for a tunnel boring machine provided by the present invention:

[0092] In Example 1, the water return pipeline includes a water return main path and a water return bypass path, and the hot end of the refrigeration module (i.e., the condenser) is connected to the water return bypass path. Different from Example 1, in this embodiment, the water return pipeline only includes a water return main path, and the hot end of the refrigeration module is directly connected to the water return main path.

[0093] Specific embodiment 3 of the non-stop tunneling cooling system for a tunnel boring machine provided by the present invention:

[0094] In Example 1, the hot end of the refrigeration module is connected to the return water pipeline of the external circulation pipeline. Different from Example 1, in this embodiment, the hot end of the refrigeration module is connected to the water inlet pipeline of the external circulation pipeline, and the water in the water inlet pipeline cools the water in the cold storage tank, thereby completing the cold storage process.

[0095] Specific embodiment 4 of the non-stop tunneling cooling system for a tunnel boring machine provided by the present invention:

[0096] In Example 1, the water treatment device is connected in series upstream of the hot end of the refrigeration module of the water return bypass. Different from Example 1, in this embodiment, the water treatment device is connected in series to the water return main line and is located upstream of the connection between the water return bypass and the water return main line.

[0097] Specific embodiment 5 of the non-stop tunneling cooling system for a tunnel boring machine provided by the present invention:

[0098] In Example 1, the cold storage container includes two cold storage tanks, namely an input cold storage tank and an output cold storage tank. Different from Example 1, in this embodiment, the cold storage container includes three cold storage tanks, namely a first cold storage tank, a second cold storage tank and a third cold storage tank, which are connected in series in sequence, wherein the first cold storage tank serves as an input cold storage tank and the third cold storage tank serves as an output cold storage tank. In other embodiments, the cold storage container includes a cold storage tank, the water inlet end of the cold storage circulation pipeline is connected to the bottom of the cold storage tank, the water outlet end of the cold storage circulation pipeline is connected to the top of the cold storage tank, and the cold storage output pipeline is also connected to the bottom of the cold storage tank, and the cold storage tank serves as both an input cold storage tank and an output cold storage tank.

[0099] Specific embodiment 6 of the non-stop tunneling cooling system for a tunnel boring machine provided by the present invention:

[0100] In Example 1, the output cold storage tank is connected to the water inlet pipeline through the cold release pipeline, and the water in the output cold storage tank enters the water inlet pipeline and then performs heat exchange with the plate cooler. Different from Example 1, in this embodiment, the cold release pipeline is directly connected to the plate cooler, and the water in the output cold storage tank directly performs heat exchange with the plate cooler after passing through the cold release pipeline.

[0101] Specific embodiment 6 of the non-stop tunneling cooling system for a tunnel boring machine provided by the present invention:

[0102] In Example 1, the liquid level sensor is a static pressure level gauge. Different from Example 1, in this embodiment, the liquid level sensor is an ultrasonic liquid level sensor installed on the top of the inner cavity of the cold storage container, and the ultrasonic liquid level sensor is used to obtain the liquid level position information in the cold storage container to feed back to the cooling control system and then obtain the liquid level data of the cold storage container. In other embodiments, the liquid level sensor is a float type liquid level sensor or a radar liquid level sensor.

[0103] A specific embodiment 1 of the non-stop tunneling cooling method for a tunnel boring machine provided by the present invention comprises the following steps:

[0104] (1) An internal circulation cooling system, an external circulation cooling system and a cold storage system are arranged on the tunnel boring machine, wherein the cold storage system has a cold storage container for storing low-temperature cooling water, and the cold storage system is moved together with the tunnel boring machine. The external circulation cooling system first exchanges heat with the internal circulation cooling system through a main heat exchanger to obtain high-temperature cooling water, and the high-temperature cooling water enters the cold storage container along the return water pipeline and the water supply pipeline of the external circulation cooling system;

[0105] (2) Stop replenishing water to the cold storage container, and continue to work with the external circulation cooling system, so that the high-temperature cooling water in the return water pipeline of the external circulation cooling system passes through the cold end of the refrigeration module, the cold end of the refrigeration module exchanges heat with the high-temperature cooling water in the cold storage container, and the hot end of the refrigeration module exchanges heat with the high-temperature cooling water in the return water pipeline, and the high-temperature cooling water in the cold storage container becomes low-temperature cooling water and is stored in the cold storage container;

[0106] (3) When the external circulation pipeline of the external circulation cooling system stops working due to the connection of the pipe section, the cold storage system is used to replace the external circulation cooling system, so that the low-temperature cooling water in the cold storage container exchanges heat with the main heat exchanger to keep the tunnel boring machine continuing to advance.

[0107] In this method, a cold storage system is provided on the tunnel boring machine. When the tunnel boring machine is working normally and does not need to connect the pipe section, the external circulation cooling system cools the tunnel boring machine. When the tunnel boring machine needs to connect the pipe section to extend the external circulation pipeline, the external circulation cooling system stops. At this time, the cold storage system exchanges heat with the main heat exchanger, so that the tunnel boring machine can still work normally. When the pipe section is added, the external circulation cooling system exchanges heat with the main heat exchanger again. The external circulation cooling system and the cold storage system complement each other and can continuously cool the tunnel boring machine to ensure that the tunnel boring machine can continue to dig and the tunnel boring machine will not stop due to connecting the pipe section, so the construction efficiency is high.

[0108] During the operation of the tunnel boring machine, the cold storage system only works when the pipe section is connected, exchanging heat with the main heat exchanger to cool the tunnel boring machine. The rest of the time, the external circulation cooling system exchanges heat with the main heat exchanger to cool the tunnel boring machine.

[0109] In step (2) of the above-mentioned embodiment 1, the high-temperature cooling water in the cold storage container is cooled by the high-temperature cooling water in the return water pipeline of the external circulation cooling system and the refrigeration module. In other embodiments, the high-temperature cooling water in the cold storage container is cooled by the low-temperature cooling water in the inlet water pipeline of the external circulation cooling system and the refrigeration module.

[0110] Specific embodiment 2 of the non-stop tunneling cooling method for a tunnel boring machine provided by the present invention comprises the following steps:

[0111] (1) An internal circulation cooling system, an external circulation cooling system and a cold storage system are arranged on the tunnel boring machine, wherein the cold storage system has a cold storage container for storing low-temperature cooling water, and the cold storage system is moved together with the tunnel boring machine. The external circulation cooling system first exchanges heat with the internal circulation cooling system through a main heat exchanger to obtain high-temperature cooling water, and the high-temperature cooling water enters the cold storage container along the return water pipeline and the water supply pipeline of the external circulation cooling system;

[0112] (2) Stop replenishing water to the cold storage container, and continue to work with the external circulation cooling system, so that the high-temperature cooling water in the return water pipeline of the external circulation cooling system passes through the cold end of the refrigeration module, the cold end of the refrigeration module exchanges heat with the high-temperature cooling water in the cold storage container, and the hot end of the refrigeration module exchanges heat with the high-temperature cooling water in the return water pipeline, and the high-temperature cooling water in the cold storage container becomes low-temperature cooling water and is stored in the cold storage container;

[0113] (3) During long-distance excavation, the cold storage system is preferred to exchange heat with the main heat exchanger. Before the low-temperature cooling water in the cold storage container rises in temperature and is about to become high-temperature cooling water and is unable to exchange heat and cool the main heat exchanger, the external circulation cooling system is started. While the external circulation cooling system is exchanging heat and cooling the main heat exchanger, it exchanges heat with the hot end of the refrigeration module through the return water pipeline, thereby cooling the high-temperature cooling water in the cold storage container. After the temperature of the high-temperature cooling water in the cold storage container drops, the external circulation cooling system stops working and relies on the cold storage system to exchange heat with the main heat exchanger.

[0114] In this method, when the tunnel boring machine is excavating a long distance, the tunnel boring machine is cooled by the cold storage system first. When the temperature of the cooling water in the cold storage system rises and cannot be cooled any further, the external circulation cooling system is used to cool the tunnel boring machine and cool down the cooling water in the cold storage system. When the cooling water in the cold storage system is cooled to the required temperature, the cold storage system continues to cool the tunnel boring machine. Since the tunnel boring machine is mainly cooled by the cold storage system during the entire working process, the reliance on the external circulation cooling system is relatively small, which greatly reduces the impact of the external circulation cooling system on the tunnel boring process of the tunnel boring machine. It is not easy for the tunnel boring machine to be unable to be cooled due to the stopping of the external circulation cooling system due to the pipe section. Therefore, the tunnel boring machine can continue to operate and the tunnel boring efficiency is relatively high.

[0115] In addition, since the cold storage system performs short-distance circulation when cooling and does not require the help of water pumps outside the tunnel, it is more energy-efficient to use the cold storage system as the main cooling system during long-distance excavation.

[0116] In step (2) of the above-mentioned embodiment 2, the high-temperature cooling water in the cold storage container is cooled by the high-temperature cooling water in the return water pipeline of the external circulation cooling system and the refrigeration module. In other embodiments, the high-temperature cooling water in the cold storage container is cooled by the low-temperature cooling water in the inlet water pipeline of the external circulation cooling system and the refrigeration module.

[0117] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A non-stop tunneling cooling system for a tunnel boring machine, characterized in that: include: Main heat exchanger; An internal circulation cooling system (1) is connected to the main heat exchanger and performs heat exchange with the working equipment of the tunnel boring machine; An external circulation cooling system, comprising an external circulation pipeline, wherein the external circulation cooling system is used to perform heat exchange with the internal circulation cooling system (1) through the main heat exchanger; a cold storage system connected to the main heat exchanger and moving with the tunnel boring machine, and used for exchanging heat with the internal circulation cooling system (1) through the main heat exchanger to cool the tunnel boring machine; The external circulation cooling system is configured to perform heat exchange with the internal circulation cooling system (1) through the main heat exchanger when the tunnel boring machine is operating normally, and the cold storage system is configured to perform heat exchange with the internal circulation cooling system (1) through the main heat exchanger instead of the external circulation cooling system when the tunnel boring machine connects pipe sections to extend the external circulation pipeline.

2. The non-stop tunneling cooling system for a tunnel boring machine according to claim 1, characterized in that: The main heat exchanger is a plate cooler (5), and the plate cooler (5) is connected in series to the external circulation pipeline.

3. The non-stop tunneling cooling system for a tunnel boring machine according to claim 1, characterized in that: The cold storage system is arranged on the trailer of the tunnel boring machine.

4. The non-stop tunneling cooling system for a tunnel boring machine according to any one of claims 1 to 3, characterized in that: The cold storage system comprises: cold storage container; a cold storage circulation pipeline (18), both ends of which are connected to the cold storage container; and A refrigeration module, wherein the cold end of the refrigeration module is arranged on the cold storage circulation pipeline (18), and the hot end of the refrigeration module is connected to the external circulation pipeline.

5. The non-stop tunneling cooling system for a tunnel boring machine according to claim 4, characterized in that: The cold storage system also includes: A water replenishment pipeline (2) is used to inject water into the cold storage container, one end of the water replenishment pipeline (2) is connected to the external circulation pipeline, and the other end is connected to the cold storage container.

6. The non-stop tunneling cooling system for a tunnel boring machine according to claim 4, characterized in that: The external circulation pipeline comprises a water inlet pipeline (3) and a water return pipeline (4), and the hot end of the refrigeration module is arranged on the water return pipeline (4) of the external circulation pipeline.

7. The non-stop tunneling cooling system for a tunnel boring machine according to claim 6, characterized in that: The return water pipeline (4) comprises: Backwater Main Road (43); and A water return bypass (44), both ends of which are connected to the water return main path (43). The hot end of the refrigeration module is arranged on the water return bypass (44), a bypass valve for controlling the on-off of the water return bypass (44) is arranged on the water return bypass (44), and a main valve connected in parallel with the bypass valve is arranged on the water return main line (43), and the main valve is used to control the on-off of the water return main line (43).

8. The non-stop tunneling cooling system for a tunnel boring machine according to claim 7, characterized in that: A water treatment device (35) is serially connected to the return water bypass (44) upstream of the hot end of the refrigeration module.

9. The non-stop tunneling cooling system for a tunnel boring machine according to claim 7, characterized in that: The pipe diameter of the water return bypass (44) is equal to that of the water return main pipe (43).

10. The non-stop tunneling cooling system for a tunnel boring machine according to claim 4, characterized in that: The cold storage container comprises at least two independent cold storage tanks, the at least two independent cold storage tanks are connected via a cold storage connecting pipeline (24), and the cold storage connecting pipeline (24) is provided with a cold storage tank valve for controlling its on-off.

11. The non-stop tunneling cooling system for a tunnel boring machine according to claim 10, characterized in that: The cold storage system further comprises: a water supply pipeline (2) for injecting water into the cold storage container, one end of the water supply pipeline (2) being connected to the external circulation pipeline and the other end being connected to the cold storage container; The at least two independent cold storage tanks include: An output cold storage tank (23), used to be connected to the main heat exchanger and supply water thereto for heat exchange; The cold storage tank (22) is connected to the water supply pipeline (2) and stores the water supplied by the water supply pipeline (2). One end of the cold storage circulation pipeline (18) is connected to the input cold storage tank (22), and the other end is connected to the output cold storage tank (23), so as to transport the water in the input cold storage tank (22) to the output cold storage tank (23) after cooling.

12. The non-stop tunneling cooling system for a tunnel boring machine according to claim 11, characterized in that: The external circulation pipeline comprises a water inlet pipeline (3) and a water return pipeline (4); the output cold storage tank (23) is connected to the water inlet pipeline (3) via a cold storage output pipeline (27) to achieve communication with the main heat exchanger; one end of the water supply pipeline (2) is connected to the water return pipeline (4); when the cold storage system is activated, the cold storage tank, the cold storage output pipeline (27), part of the water inlet pipeline (3), the main heat exchanger, part of the water return pipeline (4) and the water supply pipeline (2) form a circulation loop.

13. The non-stop tunneling cooling system for a tunnel boring machine according to claim 10, characterized in that: There are two cold storage tanks, and there are more than two cold storage connecting pipelines (24) between the two cold storage tanks. The cold storage connecting pipelines (24) are arranged at intervals in the up-down direction.

14. The non-stop tunneling cooling system for a tunnel boring machine according to claim 4, characterized in that: The cold storage system further comprises: a water replenishment pipeline (2) for injecting water into the cold storage container; the external circulation pipeline comprises a water inlet pipeline (3) and a water return pipeline (4); the cold storage container and the water inlet pipeline (3) are connected via a cold storage output pipeline (27) to achieve communication between the cold storage container and the main heat exchanger; one end of the water replenishment pipeline (2) is connected to the water return pipeline (4), and the other end is connected to the cold storage container; when the cold storage system is activated, the cold storage container, the cold storage output pipeline (27), part of the water inlet pipeline (3), the main heat exchanger, part of the water return pipeline (4), and the water replenishment pipeline (2) form a circulation loop.

15. The non-stop tunneling cooling system for a tunnel boring machine according to claim 4, characterized in that: The cold storage system further comprises: a water supply pipeline (2) for injecting water into the cold storage container; the non-stop excavation cooling system of the tunnel boring machine comprises a cooling control system, a liquid level sensor is arranged in the cold storage container, the liquid level sensor is connected to the cooling control system, a liquid level control valve is connected in series to the water supply pipeline (2), the liquid level control valve is connected to the cooling control system, and the cooling control system is configured to control the liquid level control valve to close when the liquid level sensor detects that the liquid level in the cold storage container reaches the highest level.

16. The non-stop tunneling cooling system for a tunnel boring machine according to claim 15, characterized in that: The liquid level sensor is a static pressure liquid level gauge installed at the bottom of the cold storage container, and the static pressure liquid level gauge is used to feed back the liquid level data of the cold storage container to the cooling control system.

17. The non-stop tunneling cooling system for a tunnel boring machine according to claim 4, characterized in that: A temperature sensor (9) is provided in the cold storage container, and the temperature sensor (9) is used to detect the temperature of water in the cold storage container.

18. A method for cooling a tunnel boring machine without stopping the machine, characterized in that: A main heat exchanger, an internal circulation cooling system (1), an external circulation cooling system and a cold storage system are arranged on the tunnel boring machine. The internal circulation cooling system (1) performs heat exchange with the working equipment of the tunnel boring machine. The cold storage system comprises a refrigeration module and a cold storage container for storing low-temperature cooling water. The cooling water in the cold storage container is provided by a return water pipeline (4) of the external circulation cooling system. The cold end of the refrigeration module exchanges heat with the high-temperature cooling water in the cold storage container. The hot end of the refrigeration module exchanges heat with the high-temperature cooling water in the return water pipeline (4). The cold storage system moves together with the tunnel boring machine. Wherein, the non-stop excavation cooling method of the tunnel boring machine comprises: When the tunnel boring machine is operating normally, the external circulation cooling system is caused to perform heat exchange with the internal circulation cooling system (1) through the main heat exchanger, so as to cool the tunnel boring machine; After the high-temperature cooling water in the return water pipeline (4) is replenished into the cold storage container, refrigeration is performed through the refrigeration module; After the high-temperature cooling water in the cold storage container becomes low-temperature cooling water, storing the low-temperature cooling water in the cold storage container; When the external circulation pipeline of the external circulation cooling system stops working due to the connection of the pipe section, the cold storage system replaces the external circulation cooling system to exchange heat with the main heat exchanger to maintain the continuous excavation construction of the tunnel boring machine.

19. A method for cooling a tunnel boring machine without stopping the machine, characterized in that: A main heat exchanger, an internal circulation cooling system (1), an external circulation cooling system and a cold storage system are arranged on the tunnel boring machine. The internal circulation cooling system (1) performs heat exchange with the working equipment of the tunnel boring machine. The cold storage system comprises a refrigeration module and a cold storage container for storing low-temperature cooling water. The cooling water in the cold storage container is provided by a return water pipeline (4) of the external circulation cooling system. The cold end of the refrigeration module exchanges heat with the high-temperature cooling water in the cold storage container. The hot end of the refrigeration module exchanges heat with the high-temperature cooling water in the return water pipeline (4). The cold storage system moves together with the tunnel boring machine. Wherein, the non-stop excavation cooling method of the tunnel boring machine comprises: The cold storage system performs heat exchange with the internal circulation cooling system (1) through the main heat exchanger; Before the low-temperature cooling water in the cold storage container rises in temperature and is about to become high-temperature cooling water and is unable to exchange heat and cool the main heat exchanger, the external circulation cooling system is started; While the external circulation cooling system exchanges heat and cools the main heat exchanger, it exchanges heat with the hot end of the refrigeration module through the return water pipeline (4), thereby cooling the high-temperature cooling water in the cold storage container; After the temperature of the high-temperature cooling water in the cold storage container decreases, the external circulation cooling system stops working, and the cold storage system exchanges heat with the internal circulation cooling system (1) through the main heat exchanger.

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