A pressure flow meter for monitoring the tail seal of a tunnel boring machine.

Abstract

This utility model discloses a pressure flow meter for monitoring the seal of a shield tail, belonging to the field of shield tail pressure monitoring. It includes a sealing grease pipeline and a shield electromagnetic flow pressure meter. The shield electromagnetic flow pressure meter includes a pressure gauge head installed at one end of the sealing grease pipeline, an electromagnetic sensor installed at the lower end of the pressure gauge head, mounting flanges on both sides of the electromagnetic sensor, a pressure gauge screen installed at one end of the pressure gauge head, and a power interface and a signal interface installed on both sides of the pressure gauge head. This utility model, through its shield electromagnetic flow pressure meter, can not only accurately and systematically judge earth pressure or slurry pressure, thereby improving the ease of use of the pressure flow meter, but also, through the cooperation of the above structures, can accurately monitor and visualize the grease pressure and flow rate in the shield tail grease chamber in real time, thus significantly enhancing the practicality of the pressure flow meter.

Description

Technical Field

[0001] This utility model relates to the field of shield tail pressure monitoring, specifically a pressure flow meter for shield tail seal monitoring. Background Technology

[0002] With the rapid development of tunnel construction technology and theory in my country, and the increasing level of mechanization, the number of tunnel projects using tunnel boring machines (TBMs) is growing rapidly. The tail of the shield is equipped with a sealing system, primarily used to isolate external mud and water as well as grouting fluid. The external mud and water pressure at the tail can reach 10 Bar, making the sealing effect crucial for the normal operation of the TBM. If the sealing system fails, mud and water will enter the TBM, causing either a shutdown or, in severe cases, flooding the entire tunnel. Current TBM tail sealing systems mainly consist of a grout stop plate, tail brushes, and sealing grease between the brushes. Current methods for monitoring the tail sealing effect primarily involve monitoring the grease pressure in the tail grease chamber and the earth or mud pressure at the tail. This approach cannot provide accurate and systematic judgment, nor can it provide real-time and accurate monitoring and visualization of the grease pressure and flow rate in the tail grease chamber. Therefore, it is necessary to provide a pressure flow meter that facilitates accurate and systematic judgment of earth or mud pressure, while also enabling real-time and accurate monitoring and visualization of the grease pressure and flow rate in the tail grease chamber. Utility Model Content

[0003] This utility model provides a pressure and flow meter for monitoring the tail seal of a tunnel boring machine (TBM), aiming to solve the problem that existing pressure monitoring devices are not convenient for accurately judging earth pressure or slurry pressure, and cannot monitor and visualize the grease pressure and flow rate in the tail grease chamber in real time.

[0004] To achieve the above objectives, this utility model provides a pressure flow meter for monitoring the tail seal of a tunnel boring machine, including a sealing grease pipeline;

[0005] Among them, the shield tunnel electromagnetic flow and pressure gauge includes a pressure gauge head installed at one end of the sealing grease pipeline, an electromagnetic sensor installed at the lower end of the pressure gauge head, mounting flanges installed on both sides of the electromagnetic sensor, a pressure gauge screen installed at one end of the pressure gauge head, and a power interface and a signal interface installed on both sides of the pressure gauge head.

[0006] As a preferred embodiment of this utility model, the signal output terminal of the shield electromagnetic flow pressure gauge is connected to a PLC controller via a line.

[0007] As a preferred embodiment of this utility model, the upper end of the PLC controller is connected to a cockpit display via a line.

[0008] As a preferred embodiment of this utility model, the lower end of the sealing grease pipeline is respectively connected to a first shield tail brush with a wear detection device and a second shield tail brush with a wear detection device.

[0009] As a preferred embodiment of this utility model, an external pressure sensor for the shield tail is installed at the end of the sealing grease pipeline.

[0010] In a preferred embodiment of this utility model, the pressure gauge head and the electromagnetic sensor are electrically connected, and the mounting flange is made of stainless steel.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. During the operation of the tunnel boring machine (TBM), an electromagnetic flow and pressure gauge is installed on the sealed grease pipeline. The signal output of the electromagnetic flow and pressure gauge is connected to the PLC controller via a circuit. When grease flows through the pipeline, the electromagnetic flow and pressure gauge can transmit pressure and flow signals to the PLC controller in real time. A first and a second tail brush with wear detection devices are installed at the tail of the shield, and their signal outputs are connected to the PLC controller via a circuit. When the first tail brush with wear detection device wears, the wear detection device can transmit the wear signal to the PLC controller in real time. Simultaneously, an external pressure sensor is installed on the tail of the shield and connected to the PLC controller via a circuit. This pressure sensor can transmit the external pressure signal from the tail of the shield to the PLC controller. The PLC controller is connected to the operator's cab display via a circuit, enabling PLC control... The device processes the collected signals and transmits them to the cockpit display. When the grease pressure and flow rate in the tail grease chamber change, the shield electromagnetic flow pressure gauge can monitor the grease pressure and flow rate in real time through pressure and flow sensors. The pressure and flow sensors then display the monitored pressure and flow rate on the pressure gauge screen of the shield electromagnetic flow pressure gauge. At the same time, the electromagnetic flow pressure gauge can also be connected to other devices to transmit the monitored grease pressure and flow rate to other devices, enabling networked real-time and accurate monitoring of the grease pressure and flow rate in the tail grease chamber. Compared with existing pressure detection devices, this utility model, through the above structure, can accurately and systematically judge earth pressure or slurry pressure, and can also monitor and visualize the grease pressure and flow rate in the tail grease chamber in real time, thus significantly enhancing the practicality of the pressure flow meter. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the shield tunnel electromagnetic flow and pressure gauge of this utility model;

[0015] Figure 3This is a schematic diagram of the pressure gauge structure of this utility model.

[0016] In the diagram: 100, shield electromagnetic flow and pressure gauge; 101, pressure gauge head; 102, electromagnetic sensor; 103, mounting flange; 104, pressure gauge screen; 105, power interface; 106, signal interface; 200, PLC controller; 300, cockpit display; 400, first shield tail brush with wear detection device; 500, second shield tail brush with wear detection device; 600, shield tail external pressure sensor; 700, sealing grease pipeline. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example 1

[0019] Please see Figures 1-3 This utility model provides a pressure flow meter for monitoring the tail seal of a tunnel boring machine, including a sealing grease pipeline 700.

[0020] Among them, the shield electromagnetic flow and pressure gauge 100 includes a pressure gauge head 101 installed at one end of the sealing grease pipeline 700, an electromagnetic sensor 102 installed at the lower end of the pressure gauge head 101, mounting flanges 103 installed on both sides of the electromagnetic sensor 102, a pressure gauge screen 104 installed at one end of the pressure gauge head 101, and a power interface 105 and a signal interface 106 installed on both sides of the pressure gauge head 101, respectively.

[0021] In one specific embodiment, the shield electromagnetic flow pressure gauge 100 not only accurately and systematically judges earth pressure or slurry pressure, thereby improving the ease of use of the pressure flow meter, but also, through the cooperation of the above structures, can monitor and visualize the grease pressure and flow rate in the shield tail grease chamber in real time, thus significantly enhancing the practicality of the pressure flow meter. In use, the shield electromagnetic flow pressure gauge 100 is first connected to the shield tail via the mounting flange 103. The electromagnetic flow pressure gauge is installed at the upper end of the sealed grease pipeline 700. Simultaneously, the signal output terminal of the shield electromagnetic flow pressure gauge 100 is connected to the PLC controller 200 via a line. When grease passes through the pipeline, the electromagnetic flow pressure gauge can transmit pressure and flow signals to the PLC controller 200 in real time. A first shield tail brush 400 with a wear detection device and a second shield tail brush 500 with a wear detection device are installed at the shield tail. Their signal output terminals are connected to the PLC controller 200 via a line. When the first shield tail brush 400 with a wear detection device wears, the wear detection device can transmit a wear signal to the PLC controller 200 in real time. Simultaneously, the external pressure sensor 60 at the shield tail... The shield tail is installed and then connected to the PLC controller 200 via wiring. At this time, the shield tail external pressure sensor 600 can transmit the shield tail external pressure signal to the PLC controller 200. The PLC controller 200 is connected to the cockpit display 300 via wiring, enabling the PLC controller 200 to process the collected signals before transmitting them to the cockpit display 300. When the grease pressure and flow rate in the shield tail grease chamber change, the shield electromagnetic flow and pressure gauge 100 can monitor the grease pressure and flow rate in real time through pressure sensors and flow sensors. The flow sensor then displays the monitored pressure and flow rate on the pressure gauge screen 104 of the shield electromagnetic flow and pressure gauge 100. At the same time, the shield electromagnetic flow and pressure gauge 100 can also be connected to other devices through the signal interface 106 to transmit the monitored grease pressure and grease flow rate to other devices. This enables real-time and accurate monitoring of the grease pressure and grease flow rate in the shield tail grease chamber, facilitating accurate and systematic judgment of earth pressure or slurry pressure. Furthermore, it can monitor and visualize the grease pressure and grease flow rate in the shield tail grease chamber in real time, thereby significantly enhancing the practicality of the pressure flow meter.

[0022] Please see Figure 1 The signal output terminal of the shield electromagnetic flow and pressure gauge 100 is connected to a PLC controller 200 via a line.

[0023] In one specific embodiment, the PLC controller 200 and the shield electromagnetic flow and pressure gauge 100 are connected and automatically aligned for control.

[0024] Please see Figure 1 The upper end of the PLC controller 200 is connected to the cockpit display 300 via a wire.

[0025] In one specific embodiment, the cockpit display 300 facilitates real-time observation of the status of the shield electromagnetic flow pressure gauge 100, thereby improving the ease of use of the pressure flow gauge.

[0026] Please see Figure 1 The lower end of the sealing grease pipe 700 is connected to a first shield tail brush 400 with a wear detection device and a second shield tail brush 500 with a wear detection device.

[0027] In one specific embodiment, the first shield tail brush 400 with a wear detection device and the second shield tail brush 500 with a wear detection device can facilitate cleaning of the shield tail, further improving ease of use.

[0028] Please see Figure 1 An external pressure sensor 600 for the tail shield is installed at the end of the sealing grease pipe 700.

[0029] In one specific embodiment, the shield tail external pressure sensor 600 can detect and transmit external pressure, enhancing the practicality of the pressure flow meter.

[0030] Please see Figure 2 and Figure 3 The pressure gauge head 101 and the electromagnetic sensor 102 are electrically connected, and the mounting flange 103 is made of stainless steel.

[0031] In one specific embodiment, the electrical connection between the pressure gauge head 101 and the electromagnetic sensor 102 facilitates real-time monitoring of the pressure at the tail of the shield, and the stainless steel mounting flange 103 prevents corrosion and extends the service life of the pressure flow meter.

[0032] Working Principle: In operation, the electromagnetic flow and pressure gauge 100 is first connected to the shield tail via mounting flange 103. The electromagnetic flow and pressure gauge is installed on the upper end of the sealing grease pipeline 700. Simultaneously, the signal output terminal of the electromagnetic flow and pressure gauge 100 is connected to the PLC controller 200 via a line. When grease flows through the pipeline, the electromagnetic flow and pressure gauge can transmit pressure and flow signals to the PLC controller 200 in real time. Meanwhile, the first shield tail brush 400 with wear detection device and the second shield tail brush 500 with wear detection device are installed at the shield tail. Their signal output terminals are connected to the PLC controller 200 via a line. When the first shield tail brush 400 with wear detection device wears, the wear detection device can transmit the wear signal to the PLC controller 200 in real time. The shield tail external pressure sensor 600 is installed on the shield tail and then connected to the PLC controller 200 via a line. The shield tail external pressure sensor 600 can transmit the external pressure signal of the shield tail to the PLC controller. The PLC controller 200 is connected to the cockpit display 300 via a line, enabling the PLC controller 200 to process the collected signals and then transmit them to the cockpit display 300. When the grease pressure and flow rate in the shield tail grease chamber change, the shield electromagnetic flow and pressure gauge 100 can monitor the grease pressure and flow rate in real time through pressure sensors and flow sensors. The pressure sensors and flow sensors then display the monitored pressure and flow rate on the pressure gauge screen 104 of the shield electromagnetic flow and pressure gauge 100. At the same time, the shield electromagnetic flow and pressure gauge 100 can also be connected to other devices through the signal interface 106 to transmit the monitored grease pressure and flow rate to other devices, thereby realizing networked real-time and accurate monitoring of the grease pressure and flow rate in the shield tail grease chamber. This facilitates accurate and systematic judgment of earth pressure or slurry pressure, and enables real-time and accurate monitoring and visualization of the grease pressure and flow rate in the shield tail grease chamber, thus significantly enhancing the practicality of the pressure and flow meter.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressure flow meter for monitoring a shield tail seal of a shield tunneling machine, characterized in that, Includes sealing grease lines (700): The shield electromagnetic flow and pressure gauge (100) includes a pressure gauge head (101) installed at one end of a sealing grease pipeline (700), an electromagnetic sensor (102) installed at the lower end of the pressure gauge head (101), mounting flanges (103) installed on both sides of the electromagnetic sensor (102), a pressure gauge screen (104) installed at one end of the pressure gauge head (101), and a power interface (105) and a signal interface (106) installed on both sides of the pressure gauge head (101).

2. The pressure flow meter for monitoring the tail seal of a tunnel boring machine according to claim 1, characterized in that: The signal output terminal of the shield electromagnetic flow pressure gauge (100) is connected to a PLC controller (200) via a line.

3. A pressure flow meter for monitoring the tail seal of a tunnel boring machine according to claim 2, characterized in that: The upper end of the PLC controller (200) is connected to the cockpit display (300) via a line.

4. A pressure flow meter for monitoring the tail seal of a tunnel boring machine according to claim 1, characterized in that: The lower end of the sealing grease pipeline (700) is respectively connected to a first shield tail brush (400) with a wear detection device and a second shield tail brush (500) with a wear detection device.

5. A pressure flow meter for monitoring the tail seal of a tunnel boring machine according to claim 1, characterized in that: The end of the sealing grease line (700) is equipped with an external pressure sensor (600) for the tail shield.

6. A pressure flow meter for monitoring the tail seal of a tunnel boring machine according to claim 1, characterized in that: The pressure gauge head (101) and the electromagnetic sensor (102) are electrically connected, and the mounting flange (103) is made of stainless steel.

Images