Portable monitoring and pressure relief integrated intelligent check valve for subway tunnel

Abstract

The invention provides a portable monitoring and pressure relief integrated intelligent check valve for a subway tunnel, and belongs to the technical field of tunnel engineering monitoring. The check valve comprises a valve body, one end of the valve body is connected with a water inlet pipeline, the other end of the valve body is provided with a water outlet end, a valve element is arranged in the valve body, meanwhile, the check valve further comprises a monitoring unit and a swing pressure relief structure, the monitoring unit is arranged on one side of the outer portion of the water inlet pipeline, and the swing pressure relief structure is arranged at the top of the water inlet pipeline. The monitoring unit is composed of a monitoring assembly and a monitoring contact arm, the monitoring assembly is connected with the monitoring contact arm, and the monitoring contact arm penetrates through the water inlet pipeline and is used for monitoring water regimen data in the water inlet pipeline. According to the invention, integrated collaborative management of real-time accurate monitoring, intelligent pressure relief and monitoring of underground water in the subway tunnel is realized, and the safety and stability of the subway tunnel are effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel engineering monitoring, and particularly to a portable integrated intelligent check valve for monitoring and pressure relief in subway tunnels. Background Art

[0002] During the construction and operation of tunnel projects, the effective monitoring and reasonable control of groundwater are key factors to ensure the safety and stability of the projects. As an important infrastructure for urban transportation, the internal environment of subway tunnels is complex and is extremely vulnerable to the influence of groundwater.

[0003] However, there are many problems in the existing technologies for groundwater monitoring and control in subway tunnels:

[0004] (1) Imperfect monitoring means: Traditional monitoring methods mostly rely on manual regular inspections, which are inefficient and cannot obtain data in real time. Manual inspections not only consume a large amount of manpower and time, but also, due to the long length and complex environment of subway tunnels, it is difficult to cover comprehensively, and monitoring blind spots are likely to occur. For example, in some areas with complex geological conditions, the groundwater conditions change rapidly, and it is difficult for manual inspections to keep up with the changing rhythm, resulting in the failure to timely detect potential safety hazards. In addition, there are also human errors in manual inspections, which affect the accuracy of monitoring data.

[0005] (2) Single and lack of intelligence in control methods: Most of the existing pressure relief control devices have simple structures and single functions. Many check valves can only achieve basic check functions and cannot be flexibly adjusted according to the actual situation of groundwater. In the face of changes in groundwater pressure, flow rate, and water quality, traditional devices cannot make timely and accurate responses. For example, when the water pressure suddenly increases, the pressure relief amount cannot be automatically adjusted, which may cause the water pressure in the tunnel to be too high and damage the tunnel structure; when the water quality is poor, impurities are likely to block the valve, affecting its normal operation and reducing the reliability and service life of the device.

[0006] (3) Disconnection between monitoring and control: At present, the monitoring system and the pressure relief control system are independent of each other, and data cannot be shared and processed collaboratively in real time. The groundwater data monitored cannot be timely fed back to the pressure relief control link, resulting in the inability to perform precise control according to the actual situation. This makes the overall groundwater management in subway tunnels lack systematicness and effectiveness, unable to achieve comprehensive and efficient management of groundwater, and reducing the ability of subway tunnels to cope with groundwater problems. Summary of the Invention

[0007] In order to overcome the deficiencies of the existing technology, the purpose of the present invention is to provide a portable integrated intelligent check valve for monitoring and pressure relief in subway tunnels, which realizes real-time and precise monitoring of groundwater in subway tunnels, intelligent pressure relief, and integrated collaborative management of monitoring, effectively improving the safety and stability of subway tunnels.

[0008] To achieve the above object, the present invention provides the following solutions:

[0009] A portable integrated intelligent check valve for monitoring and pressure relief in a subway tunnel, comprising a valve body, one end of the valve body is connected to a water inlet pipe, the other end is provided with a water outlet end, and a valve core is arranged in the valve body; further comprising a monitoring unit and a swing-up pressure relief structure, the monitoring unit is arranged on the outer side of the water inlet pipe, the swing-up pressure relief structure is arranged on the top of the water inlet pipe, the monitoring unit is composed of a monitoring component and a monitoring contact arm, the monitoring component is connected to the monitoring contact arm, and the monitoring contact arm penetrates through the water inlet pipe for monitoring water condition data in the water inlet pipe.

[0010] Preferably, the monitoring component includes multiple groups of sensor components and a data integration module, multiple groups of the sensor components are respectively connected to the data integration module, and multiple groups of the sensor components are connected in parallel.

[0011] Preferably, multiple groups of the sensor components include a pressure sensor, a flow sensor, and a pH value sensor. The pressure sensor is respectively connected to the data integration module and the monitoring contact arm through a first transmission channel for monitoring water pressure and transmitting a water pressure signal to the data integration module; the flow sensor is respectively connected to the data integration module and the monitoring contact arm through a second transmission channel for monitoring the water inlet flow rate and transmitting a flow rate signal to the data integration module; the pH value sensor is respectively connected to the data integration module and the monitoring contact arm through a third transmission channel for monitoring the acidity and alkalinity of the water quality and transmitting a signal to the data integration module.

[0012] Preferably, the monitoring component further includes a power supply module, the power supply module is an internal battery, which is electrically connected to the data integration module, the pressure sensor, the flow sensor, and the pH value sensor respectively, and the pressure sensor, the flow sensor, and the pH value sensor are electrically connected in parallel.

[0013] Preferably, the data integration module includes a signal receiving module, one end of the signal receiving module is connected to multiple groups of sensor components for receiving monitoring data, the other end of the signal receiving module is connected to a data processing module, and the data processing module is used for analyzing and processing the received water pressure, water inlet flow rate, and water quality acidity and alkalinity signal data, including obtaining the drainage volume according to the water inlet flow rate, setting a threshold value, comparing the water pressure data collected by the monitoring component with the set threshold value, if the water pressure is not less than the set threshold value, the valve disc of the swing-up pressure relief structure is opened for pressure relief, discharging the pressure exceeding the set threshold value, so as to monitor and regulate the water pressure around the subway tunnel to achieve pressure relief.

[0014] Preferably, the data integration module further includes a storage module, an early warning module, and a wireless transmission module. The storage module is connected to the data processing module and is used to store the processed signal data. The early warning module is connected to the data processing module and determines whether to issue an early warning signal according to the processed signal data. The wireless transmission module is connected to the data processing module and the early warning module respectively and is used to wirelessly transmit the processed signal data and the early warning signal to an external terminal.

[0015] Preferably, the swing-up pressure relief structure includes a valve disc. The valve disc is fixedly connected with a rocker arm. The rocker arm is connected to a bracket through a hinge bolt. The bracket is fixed inside the valve body. The valve disc rotates around the hinge bolt to control the opening and closing of the water inlet pipe in the valve body. A valve seat is provided at the top of the water inlet pipe, and a sealing gasket is provided at the contact part between the valve seat and the valve disc.

[0016] Preferably, a limiting plate is provided inside the valve core. The limiting plate is fixed on the inner wall of the valve body and is used to limit the rotation angle of the valve disc to prevent the valve disc from opening or closing excessively.

[0017] Preferably, multiple groups of stabilizing wings are symmetrically arranged on the outer surface of the valve body. The stabilizing wings are fixedly connected to the outer wall of the valve body and are used to enhance the stability of the valve body when installed in a subway tunnel. A sand blocking net is provided above the monitoring touch arm. The two ends of the sand blocking net are respectively fixedly connected to both sides of the inner wall of the water inlet pipe and are used to intercept sand and impurities in the water inlet pipe.

[0018] Preferably, a sleeve is provided at the water outlet end. The inner diameter of the sleeve is larger than the diameter of the valve body. The sleeve is sleeved on the outer surface of the valve body. Clamping parts are respectively provided on the outer surfaces of both sides of the sleeve. The valve body is connected to a grouting hole in the subway tunnel through the clamping parts, which is convenient for installation and disassembly.

[0019] According to the specific embodiments provided by the present invention, the following technical effects of the present invention are disclosed:

[0020] (1) By setting a monitoring component including a pressure sensor, a flow sensor, and a pH value sensor, the present invention can obtain water condition data such as water pressure, flow rate, and water quality acidity and alkalinity in the water inlet pipe in real time. These sensors are connected to the data integration module, and multiple groups of sensor components are connected in parallel, ensuring the stability and independence of data collection. The signal receiving module in the data integration module receives the monitoring data, which is analyzed and processed by the data processing module and then stored by the storage module, realizing the accurate monitoring and recording of relevant data in the subway tunnel and providing a reliable basis for subsequent decision-making.

[0021] (2) The present invention utilizes the warning module and the wireless transmission module in the data integration module. When the processed signal data exceeds the preset range, the warning module issues a warning signal, and the data and the warning signal are transmitted to an external terminal through the wireless transmission module. Meanwhile, the valve disc of the swing-up pressure relief structure can rotate around the hinge bolt to relieve pressure when the water pressure is abnormal according to the actual situation, and the rotation angle of the valve disc is restricted by the limiting plate to ensure the safety and reliability of the pressure relief process. This intelligent control method can automatically adjust the valve state according to the monitoring data, realizing the intelligent control of the water flow and pressure in the subway tunnel. Compared with the traditional valves with single functions, it can better cope with the complex changes in the groundwater environment.

[0022] (3) The present invention enhances the stability during installation in the subway tunnel by arranging stabilizing wings on the outer surface of the valve body; the sand screen above the monitoring arm can intercept sand particles and impurities, protecting the sensors and valve components and extending the service life of the equipment. The design of the sleeve and the clamping part at the water outlet end enables the valve body to be connected to the grouting hole in the subway tunnel through the clamping part, facilitating installation and disassembly, convenient for the daily maintenance and replacement of the equipment, reducing the maintenance cost, and improving the operation efficiency of the relevant facilities in the subway tunnel.

[0023] (4) The present invention measures the water pressure using a pressure sensor, obtains the drainage volume based on the data of the flow sensor in combination with the opening time of the check valve, and realizes feedback control by setting a threshold value in the data integration module. Specifically, when the water pressure is not less than the set threshold value, the valve disc of the swing-up pressure relief structure opens to relieve pressure, discharging the pressure exceeding the threshold value, achieving a pressure reduction effect, and avoiding excessive deformation of the surrounding water pressure of the subway tunnel. Especially in the case of inconsistent circumferential pressure in the tunnel, it can effectively prevent uneven deformation of the tunnel segments, and further avoid cracking at the joints, keeping the water pressure around the subway tunnel at an appropriate value. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a structural cross-sectional view provided for Embodiment 1 of the present invention;

[0026] Figure 2 It is a schematic diagram of the connection relationship of the monitoring unit provided for Embodiment 1 of the present invention;

[0027] Figure 3 It is a schematic diagram of the connection relationship of the data integration module provided for Embodiment 1 of the present invention.

[0028] Description of the reference numerals in the drawings:

[0029] 1. Valve body; 2. Water inlet pipe; 3. Sand screen; 4. Limiting plate; 5. Bracket; 6. Rocker arm; 7. Valve disc; 8. Valve seat; 9. Hinge bolt; 10. Monitoring component; 11. Monitoring contact arm; 12. Valve core; 13. Water outlet end; 14. Sleeve; 15. Snap-in part; 16. Stabilizing fin; 17. Power module; 18. Pressure sensor; 19. Flow sensor; 20. pH value sensor; 21. Data integration module; 22. First transmission channel; 23. Second transmission channel; 24. Third transmission channel; 25. Signal receiving module; 26. Data processing module; 27. Storage module; 28. Early warning module; 29. Wireless transmission module. Detailed implementation manners

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0032] Embodiment 1

[0033] As Figure 1 shown, a portable integrated intelligent check valve for subway tunnels for monitoring and pressure relief provided in this embodiment mainly consists of a valve body 1, a water inlet pipe 2, a water outlet end 13, a valve core 12, a monitoring unit, and a swing-up pressure relief structure. One end of the valve body 1 is connected to the water inlet pipe 2, and the other end is provided with the water outlet end 13. The valve core 12 is installed inside the valve body 1. The monitoring unit is located on the outer side of the water inlet pipe 2 and consists of a monitoring component 10 and a monitoring contact arm 11. The monitoring contact arm 11 penetrates the water inlet pipe 2 and is used to collect water condition data. The monitoring component 10 includes multiple groups of sensor components, a data integration module 21, and a power module 17. The multiple groups of sensor components include a pressure sensor 18, a flow sensor 19, and a pH value sensor 20. They are respectively connected to the data integration module 21 and the monitoring contact arm 11 through a first transmission channel 22, a second transmission channel 23, and a third transmission channel 24, and these sensor components are connected in parallel to ensure the stability and independence of data collection. Among them, the pressure sensor 18 is a high-precision strain gauge type pressure sensor with a measurement accuracy of up to ±0.5% FS and a range of 0-10 MPa, which can accurately measure the pressure change of groundwater in the subway tunnel. The flow sensor 19 is an electromagnetic flow sensor with a measurement accuracy of ±1% and a range of 0-50 m3 / h, which can meet the measurement requirements under different flow conditions. The pH sensor 20 is a glass electrode type pH sensor with a measurement accuracy of ±0.01pH and a measurement range of 0 - 14pH, which can accurately monitor the acidity and alkalinity of groundwater. Moreover, the first transmission channel 22, the second transmission channel 23, and the third transmission channel 24 all adopt shielded twisted pair wires to reduce external electromagnetic interference and ensure the accurate transmission of the data collected by the sensors to the data integration module 21. The core material of the transmission channel is high-purity oxygen-free copper, which has the characteristics of low resistance and high conductivity, ensuring the stability of signal transmission.

[0034] The swing-up pressure relief structure is arranged at the top of the water inlet pipe 2, including a valve disc 7, a hinge bolt 9, a bracket 5, and a valve seat 8. The valve disc 7 is fixedly connected with a rocker arm 6. The rocker arm 6 is connected to the bracket 5 fixed inside the valve body 1 through the hinge bolt 9. The valve disc 7 can rotate around the hinge bolt 9 to realize the control of the opening and closing of the water inlet pipe 2. The valve seat 8 is located at the top of the water inlet pipe 2, and a sealing gasket is provided at the contact part with the valve disc 7 to enhance the sealing effect.

[0035] Multiple groups of stabilizing wings 16 are symmetrically arranged on the outer surface of the valve body 1. The stabilizing wings 16 are fixedly connected to the outer wall of the valve body 1 to enhance the stability of the valve body during installation in the subway tunnel. A sand screen 3 is provided above the monitoring arm 11, and both ends of it are fixed on both sides of the inner wall of the water inlet pipe 2 to intercept sand and impurities and protect the sensor and valve components. A sleeve 14 is provided at the water outlet end 13. The inner diameter of the sleeve 14 is larger than the diameter of the valve body 1. The sleeve 14 is sleeved on the outer surface of the valve body 1. Clamping members 15 are provided on the outer surfaces of both sides of the sleeve 14. The valve body 1 is connected to the grouting hole in the subway tunnel through the clamping members 15, which is convenient for installation and disassembly.

[0036] In addition, the monitoring component 10 mainly realizes its functions through the data integration module 21. Combined with Figure 2 and Figure 3, the data integration module 21 includes a signal receiving module 25, a data processing module 26, a storage module 27, an early warning module 28, and a wireless transmission module 29. The water pressure, flow rate, and water quality pH data collected by the pressure sensor 18, flow sensor 19, and pH sensor 20 are transmitted to the signal receiving module 25 through their respective transmission channels. After receiving these monitoring data, the signal receiving module 25 transmits them to the data processing module 26. The data processing module 26 analyzes and processes the received data. For example, it compares with the preset normal range values. Secondly, the power supply module 17 is an internal battery, which is electrically connected to the data integration module 21, pressure sensor 18, flow sensor 19, and pH sensor 20 respectively, providing stable electrical energy for each component. The pressure sensor 18, flow sensor 19, and pH sensor 20 are electrically connected in parallel to ensure that each sensor works independently without interference. The power supply module 17 has overcharge protection, over-discharge protection, and battery power monitoring functions, preventing the battery from being damaged due to overcharging or over-discharging. At the same time, it can monitor the battery power in real time. When the power is lower than the preset value of 10%, it sends a low-power warning message to the external terminal through the wireless transmission module 29 to remind the staff to replace it in time.

[0037] The data processing module 26 also has the function of processing water pressure and drainage volume data. After the water pressure data collected by the pressure sensor 18 is transmitted to the data processing module 26 in real time, it is compared with the pre-set pressure threshold. The flow rate data collected by the flow sensor 19, combined with the opening time of the check valve, is calculated by the data processing module 26 to obtain the drainage volume, and the drainage volume data is analyzed. If the water pressure is not less than the set threshold, the data processing module 26 issues an instruction to control the valve disc 7 of the swing-up pressure relief structure to rotate and open around the hinge bolt 9 for pressure relief operation; when the water pressure is lower than the set threshold, the valve disc 7 remains closed. During the whole process, if the water pressure or drainage volume is abnormal, the early warning module 28 issues early warning signals of different levels according to the degree of abnormality, and the wireless transmission module 29 transmits the water pressure, drainage volume data, and early warning signals to the external terminal. It should be noted that the opening and closing of the valve disc 7 are only determined by the relationship between the water pressure and drainage volume and the set threshold, and have nothing to do with the water quality monitoring data. The purpose of the water quality monitoring data is to realize the effective management of the water situation in the subway tunnel.

[0038] If the data processing module 26 determines that the data exceeds the normal range, the processed data is stored in the storage module 27, and the early warning module 28 is triggered at the same time. The early warning module 28 issues early warning signals of different levels according to the degree of exceeding the range, such as a yellow warning for a slight abnormality and a red warning for a serious abnormality. The wireless transmission module 29 transmits the processed signal data and early warning signals to an external terminal, such as a computer in the monitoring room or a handheld device of a staff member, through wireless communication methods such as Bluetooth, Wi-Fi or LoRa, so that the staff can timely understand the situation of groundwater in the subway tunnel. At the same time, the valve disc 7 rotates around the hinge bolt 9 under the action of water pressure to open, and the groundwater is discharged from the water outlet 13 through the water inlet pipe 2 through the valve body 1. The discharged water is drained into the drainage system of the subway tunnel through the pipe connected to the outside through the sleeve 14, avoiding damage to the track and pipe fittings by water flow, thereby realizing the pressure relief function. In addition, the limit plate 4 is fixed on the inner wall of the valve body 1 to limit the rotation angle of the valve disc 7, prevent the valve disc 7 from being excessively opened or closed, and ensure that the pressure relief process is safe and reliable.

[0039] Working principle: First, insert the check valve provided in this embodiment into the reserved grouting hole of the subway tunnel and fix it. Subsequently, under the action of water pressure, the valve disc 7 in the swing-open pressure relief structure and the rocker arm 6 are connected to the bracket 5 through the hinge bolt 9. When the water pressure is large enough, the valve disc 7 and the rocker arm 6 rotate and open around the hinge bolt 9, and the sealing gasket at the contact part between the valve seat 8 at the top of the water inlet pipe 2 and the valve disc 7 no longer fits tightly. Then, groundwater will pass through the water inlet pipe 2, through the valve body 1, and be discharged from the water outlet end 13. The groundwater is diverted to the drainage system of the subway tunnel through the casing 14 and the externally arranged drainage pipe, thus realizing pressure relief. At the same time, the monitoring component 10 starts to work, and the monitoring arm 11 starts to monitor the information of groundwater. The corresponding pressure sensor 18, flow sensor 19, and pH value sensor 20 continuously collect the water condition data in the water inlet pipe 2, and respectively obtain the water pressure, water inlet flow rate, and water quality acidity and alkalinity information. Subsequently, the collected signal data is stably and independently transmitted to the signal receiving module 25 in the data integration module 21 through their respective corresponding first transmission channel 22, second transmission channel 23, and third transmission channel 24. After receiving the signal data, the signal receiving module 25 transmits it to the data processing module 26 for processing. During this process, the data processing module 26 can obtain the drainage volume monitored by the flow sensor 18, and the data processing module 26 compares the set threshold with the collected water pressure data. Specifically: if the water pressure is greater than or equal to the set threshold, immediately control the valve disc 7 to open for pressure relief; if the water pressure is lower than the threshold, the valve disc 7 remains closed. During the entire operation process, continuously monitor the water pressure and drainage volume. Once an abnormality occurs, the warning module 28 issues a warning, and the wireless transmission module 29 transmits the relevant data and warning information to the external terminal. In addition, the entire process aims to ensure that the water pressure around the tunnel is appropriate, and at the same time provides auxiliary data support for water quality monitoring. Subsequently, on the one hand, the processed signal data is stored in the storage module 27 for subsequent query and analysis; on the other hand, if the processed signal data exceeds the normal threshold, preferably when the pH value of groundwater is acidic or alkaline, the data processing module 26 will send signals to the warning module 28 and the wireless transmission module 29 respectively; after receiving the signal, the warning module 28 will immediately activate the warning mechanism. According to the preset different degrees of pH value abnormality, different levels of warning signals are issued. When the pH value is slightly lower or higher than the normal range, a yellow warning is issued to remind the staff to pay attention to the change of groundwater quality; if the pH value seriously deviates from the normal range and may cause greater damage to the tunnel structure, a red warning is issued to warn the staff that they must immediately take measures. At the same time, after receiving the signal from the data processing module 26, the wireless transmission module 29 will transmit the processed signal data containing the abnormality of the groundwater pH value and the warning information to the external terminal through wireless communication. The external terminal can be a computer device in the monitoring center or a mobile terminal carried by the staff. The staff in the monitoring center can intuitively view the abnormality of the groundwater pH value and the specific location where the abnormality occurs through a dedicated monitoring software.

[0040] Therefore, by adopting the above-mentioned portable integrated intelligent check valve for monitoring and pressure relief in subway tunnels, the real-time and accurate monitoring of groundwater in subway tunnels, intelligent pressure relief, and integrated collaborative management of monitoring are realized, effectively improving the safety and stability of subway tunnels.

[0041] In this article, specific examples are used to elaborate on the principle and implementation mode of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A convenient monitoring and pressure relief integrated intelligent check valve for subway tunnels, comprising a valve body, one end of which is connected to a water inlet pipe, and the other end is provided with a water outlet, and a valve core is provided in the valve body, characterized in that: It also includes a monitoring unit and a swing pressure relief structure, the monitoring unit is arranged on the external side of the water inlet pipe, the swing pressure relief structure is arranged on the top of the water inlet pipe, the monitoring unit is composed of a monitoring component and a monitoring contact arm, the monitoring component is connected to the monitoring contact arm, and the monitoring contact arm runs through the water inlet pipe, which is used to monitor the water condition data in the water inlet pipe.

2. The portable monitoring and pressure relief integrated intelligent check valve for subway tunnels according to claim 1 is characterized in that: The monitoring component includes multiple groups of sensor components and a data integration module. The multiple groups of sensor components are respectively connected to the data integration module, and the multiple groups of sensor components are connected in parallel.

3. The portable monitoring and pressure relief integrated intelligent check valve for subway tunnels according to claim 2 is characterized in that: The multiple groups of sensor components include pressure sensors, flow sensors and pH sensors. The pressure sensors are respectively connected to the data integration module and the monitoring contact arm through a first transmission channel, and are used to monitor the water pressure and transmit the water pressure signal to the data integration module; the flow sensors are respectively connected to the data integration module and the monitoring contact arm through a second transmission channel, and are used to monitor the water inlet flow and transmit the flow signal to the data integration module; the pH sensors are respectively connected to the data integration module and the monitoring contact arm through a third transmission channel, and are used to monitor the acidity and alkalinity of the water quality and transmit the signal to the data integration module.

4. The portable monitoring and pressure relief integrated intelligent check valve for subway tunnels according to claim 3 is characterized in that: The monitoring component also includes a power module, which is a built-in battery and is electrically connected to the data integration module, pressure sensor, flow sensor and pH sensor respectively, and the pressure sensor, flow sensor and pH sensor are electrically connected in parallel.

5. The portable monitoring and pressure relief integrated intelligent check valve for subway tunnels according to claim 4 is characterized in that: The data integration module includes a signal receiving module, one end of which is connected to multiple groups of sensor components for receiving monitoring data, and the other end of the signal receiving module is connected to a data processing module, and the data processing module is used to analyze and process the received water pressure, water inlet flow and water quality pH signal data, including obtaining the discharge volume according to the water inlet flow and setting a threshold value, and comparing the water pressure data collected by the monitoring component with the set threshold value. If the water pressure is not less than the set threshold value, the valve disc of the swing pressure relief structure opens to relieve pressure and discharges the pressure exceeding the set threshold value, so as to monitor and regulate the water pressure around the subway tunnel to achieve pressure relief.

6. The portable monitoring and pressure relief integrated intelligent check valve for subway tunnels according to claim 5 is characterized in that: The data integration module also includes a storage module, an early warning module and a wireless transmission module. The storage module is connected to the data processing module and is used to store processed signal data; the early warning module is connected to the data processing module and determines whether to issue an early warning signal based on the processed signal data; the wireless transmission module is respectively connected to the data processing module and the early warning module and is used to wirelessly transmit the processed signal data and the early warning signal to an external terminal.

7. The portable monitoring and pressure relief integrated intelligent check valve for subway tunnels according to claim 1 is characterized in that: The swing pressure relief structure includes a valve disc, the valve disc is fixedly connected to a rocker arm, the rocker arm is connected to a bracket via a hinge bolt, the bracket is fixed inside the valve body, the valve disc rotates around the hinge bolt to control the opening and closing of a water inlet pipe in the valve body, and a valve seat is provided on the top of the water inlet pipe, and a sealing gasket is provided at the contact position between the valve seat and the valve disc.

8. The portable monitoring and pressure relief integrated intelligent check valve for subway tunnels according to claim 7 is characterized in that: A limit plate is provided inside the valve core, and the limit plate is fixed on the inner wall of the valve body to limit the rotation angle of the valve disc to prevent the valve disc from being excessively opened or closed.

9. The portable monitoring and pressure relief integrated intelligent check valve for subway tunnels according to claim 1 is characterized in that: A plurality of groups of stabilizing wings are symmetrically arranged on the outer surface of the valve body, and the stabilizing wings are fixedly connected to the outer wall of the valve body, so as to enhance the stability of the valve body when installed in a subway tunnel; a sand retaining net is arranged above the monitoring touch arm, and the two ends of the sand retaining net are respectively and correspondingly fixedly connected to the two sides of the inner wall of the water inlet pipe, so as to intercept sand impurities in the water inlet pipe.

10. The portable monitoring and pressure relief integrated intelligent check valve for subway tunnels according to claim 1 is characterized in that: A sleeve is provided at the water outlet, the inner diameter of the sleeve is larger than the diameter of the valve body, the sleeve is sleeved on the outer surface of the valve body, and clamping parts are respectively provided on the outer surfaces of both sides of the sleeve. The valve body is connected to the grouting hole in the subway tunnel through the clamping parts, which is convenient for installation and disassembly.

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