Shield tunneling machine cutterhead temperature monitoring and cooling system

Abstract

The utility model belongs to the technical field of shield tunneling machines, and particularly discloses a shield tunneling machine cutterhead temperature monitoring and cooling system which comprises a temperature sensing module, a cutter cooling spray head, a cooling pipeline, a water tank and a water pump. The multiple temperature sensing modules are evenly distributed on the two sides of a shield tunneling machine cutter head, one end of the cooling pipeline is connected with a water tank through a water pump, and the other end of the cooling pipeline is connected with the cutter cooling spray head. The system further comprises a position adjusting mechanism used for driving the cutter cooling sprayers to reciprocate on the two sides of the shield tunneling machine cutterhead. Through the structural design, the temperature sensing module can monitor the temperature of the two sides of the cutter head in real time, the position adjusting mechanism can adjust the position of the cutter cooling spray head, and the water pump is started to enable cooling water in the water tank to be sprayed out of the cutter cooling spray head after passing through the cooling pipeline; therefore, the shield tunneling machine cutterhead can be timely and accurately subjected to spraying cooling treatment.

Description

Technical Field

[0001] This application belongs to the field of tunnel boring machine technology, and more specifically, relates to a tunnel boring machine cutterhead temperature monitoring and cooling system. Background Technology

[0002] During tunnel boring machine (TBM) excavation, the interaction between the cutterhead and the soil / rock is crucial. However, the continuous friction between the cutterhead and the soil / rock during excavation generates a significant amount of heat, especially in hard rock formations or under conditions of prolonged continuous operation, where the temperature of the cutterhead and cutter cutters can rise sharply. This high temperature not only accelerates cutter wear but also causes the cutterhead's sealing performance to fail, potentially leading to equipment malfunctions and severely impacting the TBM's construction efficiency and safety.

[0003] Traditional temperature detection methods primarily rely on construction workers using handheld thermometers to measure the temperature of the excavated soil. However, this method suffers from significant lag and cannot reflect the actual temperature of the cutterhead in real time. Furthermore, the use of a single sensor results in a very limited monitoring range, with numerous blind spots, making it difficult to comprehensively reflect the temperature distribution of the cutterhead. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides a shield tunneling machine cutterhead temperature monitoring and cooling system, which aims to solve the problems of lag and limited monitoring range in traditional shield tunneling machine cutterhead temperature detection methods. These methods are unable to reflect the cutterhead temperature distribution in real time and comprehensively, thus increasing the possibility of construction risks and equipment failures.

[0005] This application provides a shield machine cutterhead temperature monitoring and cooling system, specifically including a temperature sensing module, a cutter cooling nozzle, a cooling pipeline, a water tank, and a water pump; multiple temperature sensing modules are evenly distributed on both sides of the shield machine cutterhead; one end of the cooling pipeline is connected to the water tank via the water pump, and the other end is connected to the cutter cooling nozzle; the system also includes a position adjustment mechanism for driving the cutter cooling nozzle to reciprocate on both sides of the shield machine cutterhead.

[0006] Compared with the prior art, the technical solution conceived in this application, due to the setting of the temperature sensing module in the shield machine cutterhead temperature monitoring and cooling system, can comprehensively monitor the temperature distribution of the shield machine cutterhead. Combined with the operation of spraying cooling water onto the shield machine cutterhead by the cutter cooling nozzles, the cooling of the shield machine cutterhead can be effectively achieved. At the same time, the position adjustment mechanism can flexibly adjust the position of the cutter cooling nozzles to ensure timely and accurate spray cooling of the shield machine cutterhead. This can effectively reduce the risk of thermal damage to the shield machine cutterhead and improve the safety and efficiency of shield construction.

[0007] As a further preferred embodiment, the temperature sensing modules are installed on the cutterhead of the tunnel boring machine in a ring arrangement. Each temperature sensing module includes a fiber optic sensor, an array of thermocouples, and a signal transmitter. The fiber optic sensor and the array of thermocouples are connected to the signal transmitter and transmit signals through the signal transmitter.

[0008] As a further preferred embodiment, the tool cooling nozzle has a tapered converging flow channel inside, and the tool cooling nozzle is configured as a multi-hole nozzle and is connected to the cooling pipeline through the tapered converging flow channel.

[0009] As a further preferred embodiment, a quick-release threaded connector is provided between the tool cooling nozzle and the cooling pipeline, and the connection is achieved through the quick-release threaded connector.

[0010] As a further preferred embodiment, the position adjustment mechanism includes a guide rail, a slider, and a linear motor. The guide rail is fixedly connected to the cooling pipe, and both ends of the guide rail extend to both sides of the shield machine cutterhead. The slider is slidably connected to the guide rail, and the cutter cooling nozzle is fixedly connected to the slider. The cutter cooling nozzle is connected to the cooling pipe through a rubber hose, and the linear motor is mounted on the guide rail to drive the slider to slide along the guide rail.

[0011] As a further preferred embodiment, the system also includes a temperature monitoring display, which is mounted on the body of the tunnel boring machine and has a first signal receiving module inside for receiving signals emitted by a signal transmitter.

[0012] As a further preferred embodiment, the system also includes a flow sensor disposed on the cooling pipe for real-time monitoring of the flow rate of the cooling water.

[0013] As a further preferred embodiment, the system also includes a filtration device disposed at the outlet of the water tank to filter impurities in the cooling water.

[0014] As a further preferred embodiment, the system also includes a wastewater recycling and treatment mechanism, which includes a recycling tank and a conveying pipeline. The recycling tank is located at the bottom of the tunnel boring machine cutterhead and is connected to the water tank through the conveying pipeline.

[0015] As a further preferred embodiment, the system also includes a high-temperature alarm module, which is installed on the shield machine body and has a second signal receiving module inside for receiving signals emitted by the signal transmitter.

[0016] In summary, compared with the prior art, the technical solutions conceived in this application have the following main technical advantages:

[0017] 1. This application, by evenly arranging multiple temperature sensing modules on both sides of the cutterhead of the tunnel boring machine, can monitor the temperature changes of each area of ​​the cutterhead in real time and comprehensively. At the same time, the cutterhead can be cooled by spraying with cutting tool cooling nozzles, which reduces the risk of thermal damage to the cutterhead due to high temperature, and improves the overall safety and efficiency of tunnel boring construction.

[0018] 2. By controlling the water pump speed and the position of the tool cooling nozzle, this application can dynamically adjust the flow rate and spray position of the cooling water according to the actual temperature of the tool disc. This precise cooling control effectively reduces the temperature of the tool disc and extends the service life of the tool disc and the tool.

[0019] 3. This application, through the setting of a temperature monitoring display and a high-temperature alarm module, can monitor the cutter head temperature in real time and automatically trigger an early warning when the temperature is abnormal. By integrating the three-dimensional visualization function of the temperature field and setting multi-level alarm thresholds, operators can intuitively understand the abnormal temperature area and take timely measures to effectively prevent equipment failure and construction accidents caused by high temperature.

[0020] 4. This application significantly improves the safety and efficiency of tunnel boring machine (TBM) construction through comprehensive monitoring, intelligent early warning, and precise cooling. Operators can monitor the temperature of the cutterhead in real time and adjust construction parameters in a timely manner to avoid construction interruptions caused by high temperatures. At the same time, the intelligent early warning function reduces the workload of operators and improves the level of automation in construction. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the temperature monitoring and cooling system provided in the embodiments of this application;

[0022] Figure 2 This is a schematic diagram of the overall structure of the position adjustment mechanism provided in the embodiments of this application.

[0023] In all the accompanying drawings, the same reference numerals are used to denote the same elements or structures, wherein:

[0024] 1. Temperature sensing module; 2. Cutterhead cooling nozzle; 3. Cooling pipeline; 4. Water tank; 5. Water pump; 6. Position adjustment mechanism; 601. Guide rail; 602. Slider; 603. Linear motor; 7. Temperature monitoring display; 8. Flow sensor; 9. Filtration device; 10. Wastewater recycling and treatment mechanism; 1001. Recycling tank; 1002. Conveying pipeline; 11. High temperature alarm module; 12. Tunnel boring machine cutterhead. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0026] Reference Figures 1-2 This application discloses a shield tunneling machine cutterhead temperature monitoring and cooling system, comprising a temperature sensing module 1, a cutterhead cooling nozzle 2, a cooling pipe 3, a water tank 4, and a water pump 5. Multiple temperature sensing modules 1 are evenly distributed on both sides of the shield tunneling machine cutterhead 12, and are installed in a ring arrangement on the cutterhead 12. Each temperature sensing module 1 includes a fiber optic sensor, an array thermocouple, and a signal transmitter. Both the fiber optic sensor and the array thermocouple are connected to the signal transmitter and transmit signals through it. The fiber optic sensor is widely used for temperature monitoring in high-temperature environments due to its advantages such as high temperature resistance, electromagnetic interference resistance, and high measurement accuracy. The array thermocouple can provide temperature data from multiple measuring points, further improving the accuracy and reliability of temperature monitoring. The combination of these two components enables the system to more accurately capture temperature changes at different locations on the cutterhead. A mounting slot for installing the temperature sensing module 1 is provided on the cutterhead 12 of the tunnel boring machine, ensuring that the temperature sensing module 1 can be firmly fixed on the cutterhead without affecting the normal operation of the cutterhead. The fiber optic sensor is fixed with high-temperature epoxy resin. This fixing method can not only withstand the high-temperature environment, but also effectively prevent the sensor from loosening or falling off due to vibration during tunneling, thereby ensuring the stability and continuity of temperature acquisition. Temperature is collected in real time through multiple measuring points to ensure comprehensive coverage of all areas of the cutterhead and achieve all-round monitoring of the cutterhead temperature.

[0027] To achieve spray cooling of the cutterhead 12 of the tunnel boring machine, one end of the cooling pipe 3 is connected to the water tank 4 via a water pump 5 to ensure a continuous supply of cooling water. The cutter cooling nozzle 2 is located at the other end of the cooling pipe 3. The cooling pipe 3 is made of steel pipe and is used to spray cooling water directly onto the cutterhead for cooling. The nozzle body of the cutter cooling nozzle 2 is made of hard alloy, which has high strength and wear resistance, and can withstand the harsh working conditions during the tunnel boring machine's excavation process, thus extending the service life of the nozzle. The cutter head cooling nozzle 2 has a quick-release threaded connector between its sealing joint and the cooling pipe 3, enabling easy and quick nozzle replacement without complex tools or lengthy disassembly, thus reducing equipment downtime and improving maintenance efficiency. The internal conical converging flow channel of the cutter head cooling nozzle 2 accelerates water flow and reduces turbulence, improving the spray speed and uniformity of the cooling water. The multi-hole nozzle, connected to the cooling pipe 3 via the conical converging flow channel, allows cooling water to spray out in multiple directions and angles, covering a larger area of ​​the cutterhead and enhancing cooling efficiency. Furthermore, to further improve the spray cooling effect of the cutter head cooling nozzle 2, the system also includes a position adjustment mechanism 6 for driving the cutter head cooling nozzle 2 to reciprocate on both sides of the tunnel boring machine cutterhead 12. This reciprocating movement of the cutter head cooling nozzle 2 allows for uniform spray cooling of different areas of the cutterhead and continuous cooling of the side with higher temperatures, further improving cooling efficiency and extending the cutterhead's service life.

[0028] Specifically, the position adjustment mechanism 6 includes a guide rail 601, a slider 602, and a linear motor 603. The guide rail 601 is fixedly connected to the cooling pipe 3, and both ends of the guide rail 601 extend to both sides of the tunnel boring machine cutterhead 12. The slider 602 is slidably connected to the guide rail 601, and the cutter cooling nozzle 2 is fixedly connected to the slider 602. The cutter cooling nozzle 2 is connected to the cooling pipe 3 through a rubber hose. The linear motor 603 is fixedly connected to the guide rail 601 by bolts to drive the slider 602 to slide along the guide rail 601. Through the combination of the guide rail 601 and the slider 602, the cutter cooling nozzle 2 can move flexibly to both sides of the cutterhead, achieving uniform spray cooling of different areas of the cutterhead. Secondly, the use of rubber hoses ensures a stable supply of cooling water, improving the reliability of the system. Finally, the precise control capability of the linear motor 603 makes the position adjustment of the nozzle more flexible and accurate, enabling automated temperature adjustment according to actual needs.

[0029] Furthermore, the system also includes a temperature monitoring display 7, a flow sensor 8, a filter device 9, a wastewater recycling and treatment mechanism 10, and a high-temperature alarm module 11. The temperature monitoring display 7 is fixedly connected to the tunnel boring machine (TBM) body and has an internal first signal receiving module for receiving signals from a signal transmitter. This display 7 can display real-time temperature data for each area of ​​the TBM cutterhead 12. Based on the temperature data displayed on the display 7, the linear motor 603 can operate, thereby adjusting the position of the cutter cooling nozzles 2 to achieve accurate cooling. Specifically, the system also includes a PLC control system commonly used in the field. Through the PLC control system, the linear motor 603 can adjust the nozzle position based on the temperature data fed back from the temperature monitoring display 7 to achieve dynamic adjustment of the cutterhead temperature. Similarly, based on the temperature data displayed on the temperature monitoring display 7, the water pump 5 is started and can operate. Starting the water pump 5 causes the cooling water in the water tank 4 to pass through the cooling pipe 3 and be sprayed out from the cutter head cooling nozzle 2, thus cooling the shield machine cutterhead 12. The water pump 5 is a high-pressure centrifugal pump. Through the PLC control system, the water pump 5 can adjust its speed according to the temperature data fed back from the temperature monitoring display 7, achieving dynamic control of the cooling water flow. The flow sensor 8 is fixedly installed on the cooling pipe 3 to monitor the cooling water flow in real time and feeds the flow data back to the PLC control system for precise control of the cooling water flow. The filter device 9 is installed at the outlet of the water tank 4 to filter impurities in the cooling water, ensuring the cleanliness of the cooling water and improving the stability and service life of the system. The filter device 9 uses commonly used cooling water filtration equipment in the field, which is existing technology and will not be described in detail here. The cooling water sprayed on the shield machine cutterhead 12 is recycled and reused through the wastewater recycling and treatment mechanism 10, saving water resources. The high-temperature alarm module 11 is fixedly installed on the shield machine body and contains a second signal receiving module for receiving signals emitted by the signal transmitter. This high-temperature alarm module 11 has integrated three-dimensional temperature field visualization capabilities and sets multiple alarm thresholds. It is a commonly used device in this field and will not be described in detail. When the temperature is abnormal, it automatically triggers an early warning, reminding operators to take timely measures to avoid equipment failure due to high temperatures. The temperature monitoring display 7 and the high-temperature alarm module 11 also include a signal processing unit for processing the signals received by the first and second signal receiving modules. This signal processing unit improves data accuracy and reliability through AD conversion and digital filtering technology. Both the first and second signal receiving modules adopt dual-band frequency hopping communication technology to ensure stable data transmission and facilitate remote monitoring and data analysis.

[0030] Furthermore, the wastewater recycling and treatment mechanism 10 includes a recycling tank 1001 and a conveying pipe 1002. The recycling tank 1001 is located at the bottom of the tunnel boring machine cutterhead 12, with an open top to directly collect cooling water and wastewater flowing down from the cutterhead. The recycling tank 1001 is connected to the water tank 4 via the conveying pipe 1002, which is used to transport the liquid in the recycling tank 1001 back to the water tank 4, realizing the recycling of cooling water. A conveying pump is installed on the conveying pipe 1002 to transport the cooling water and wastewater in the recycling tank 1001. To further improve the reuse efficiency of cooling water, the wastewater recycling and treatment mechanism 10 also includes a wastewater treatment unit, which is located in the middle of the conveying pipe 1002. This unit is used to filter, purify, and disinfect the recycled wastewater. The treated water can flow back into the water tank 4 and be reused in the cooling system, realizing the recycling of water resources. The wastewater treatment unit employs a multi-stage filtration system, including a coarse filter, a fine filter, and an activated carbon filter layer. The coarse filter removes larger impurities, such as silt and gravel; the fine filter removes smaller particles; and the activated carbon filter layer removes odors and harmful substances from the water. This multi-stage filtration system ensures that the treated water meets the standards for reuse.

[0031] It should be understood that expressions such as "comprising" and "may include" as used in this application indicate the existence of the disclosed functions, operations, or constituent elements, and do not limit one or more additional functions, operations, and constituent elements. In this application, terms such as "comprising" and / or "having" may be interpreted as indicating a specific characteristic, number, operation, constituent element, component, or combination thereof, but should not be interpreted as excluding the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components, or combinations thereof.

[0032] It should be understood that the terms “center,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0034] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A shield tunneling machine cutterhead temperature monitoring and cooling system, characterized in that, The system includes a temperature sensing module (1), a cutter cooling nozzle (2), a cooling pipe (3), a water tank (4), and a water pump (5). The temperature sensing module (1) is provided in multiple units and is evenly distributed on both sides of the shield machine cutterhead (12). One end of the cooling pipe (3) is connected to the water tank (4) through the water pump (5), and the other end is connected to the cutter cooling nozzle (2). The system also includes a position adjustment mechanism (6) for driving the cutter cooling nozzle (2) to reciprocate on both sides of the shield machine cutterhead (12).

2. The temperature monitoring and cooling system for a shield machine cutter head according to claim 1, wherein, The temperature sensing module (1) is installed on the cutterhead (12) of the tunnel boring machine in a ring arrangement. Each temperature sensing module (1) includes an optical fiber sensor, an array thermocouple and a signal transmitter. The optical fiber sensor and the array thermocouple are connected to the signal transmitter and transmit signals through the signal transmitter.

3. The temperature monitoring and cooling system for a shield machine cutter head of claim 1, wherein, The tool cooling nozzle (2) has a tapered converging flow channel inside. The tool cooling nozzle (2) is configured as a multi-hole nozzle and is connected to the cooling pipe (3) through the tapered converging flow channel.

4. The temperature monitoring and cooling system for a shield machine cutter head of claim 1, wherein, A quick-release threaded connector is provided between the tool cooling nozzle (2) and the cooling pipe (3), and the connection is achieved through the quick-release threaded connector.

5. The temperature monitoring and cooling system for a shield machine cutter head of claim 1, wherein, The position adjustment mechanism (6) includes a guide rail (601), a slider (602), and a linear motor (603). The guide rail (601) is fixedly connected to the cooling pipe (3), and both ends of the guide rail (601) extend to both sides of the shield machine cutterhead (12). The slider (602) is slidably connected to the guide rail (601). The cutter cooling nozzle (2) is fixedly connected to the slider (602). The cutter cooling nozzle (2) is connected to the cooling pipe (3) through a rubber hose. The linear motor (603) is set on the guide rail (601) to drive the slider (602) to slide along the guide rail (601).

6. The temperature monitoring and cooling system for a shield machine cutter head of claim 2, wherein, The system also includes a temperature monitoring display (7), which is mounted on the shield machine body and has a first signal receiving module inside for receiving signals emitted by the signal transmitter.

7. The temperature monitoring and cooling system of the tunneling machine disc cutter according to claim 1, characterized in that, The system also includes a flow sensor (8) which is mounted on the cooling pipe (3) for real-time monitoring of the flow rate of cooling water.

8. The temperature monitoring and reducing system of the tunneling machine disc cutter according to claim 1, characterized in that, The system also includes a filter (9) which is located at the outlet of the water tank (4) to filter impurities in the cooling water.

9. The temperature monitoring and reducing system of the tunneling machine disc cutter according to claim 1, characterized in that, The system also includes a wastewater recycling and treatment mechanism (10), which includes a recycling tank (1001) and a conveying pipe (1002). The recycling tank (1001) is located at the bottom of the shield machine cutterhead (12), and the recycling tank (1001) is connected to the water tank (4) through the conveying pipe (1002).

10. The temperature monitoring and reducing system of the tunneling machine disc cutter according to claim 1, characterized in that, The system also includes a high temperature alarm module (11), which is installed on the shield machine body and has a second signal receiving module inside for receiving signals emitted by the signal transmitter.

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