A convenient integrated monitoring and pressure relief intelligent check valve for subway tunnels

Abstract

The present invention provides a convenient intelligent check valve with integrated monitoring and pressure relief for subway tunnels, which belongs to the field of tunnel engineering monitoring technology. The check valve includes a valve body, one end of which is connected to a water inlet pipe and the other end is provided with a water outlet. The valve body is provided with a valve core, and 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, and 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 for monitoring water condition data in the water inlet pipe. The present invention realizes real-time and accurate monitoring of groundwater in subway tunnels, intelligent pressure relief, and integrated collaborative management of monitoring, effectively improving the safety and stability of subway tunnels.

Description

Technical Field

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

[0002] During the construction and operation of tunnel projects, effective monitoring and reasonable control of groundwater are key factors in ensuring project safety and stability. As an important infrastructure for urban transportation, subway tunnels have a complex internal environment and are extremely susceptible to the impact of groundwater.

[0003] However, existing technologies have many problems in subway tunnel groundwater monitoring and control:

[0004] (1) Imperfect monitoring methods: Traditional monitoring methods rely heavily on regular manual inspections, which are inefficient and unable to obtain real-time data. Manual inspections not only consume a lot of manpower and time, but are also difficult to fully cover due to the long subway tunnel lines and complex environments, and are prone to blind spots. For example, in some areas with complex geological conditions, groundwater conditions change rapidly, and manual inspections are difficult to keep up with the pace of change, resulting in the inability to detect potential safety hazards in a timely manner. In addition, manual inspections are subject to human errors, which affect the accuracy of monitoring data.

[0005] (2) Single control method and lack of intelligence: Most existing pressure relief control devices have simple structures and single functions. Many check valves can only achieve basic non-return functions and cannot be flexibly adjusted according to the actual conditions of groundwater. When faced with changes in groundwater pressure, flow and water quality, traditional devices cannot respond promptly and accurately. For example, when the water pressure suddenly increases, the pressure relief volume cannot be automatically adjusted, which may cause excessive water pressure in the tunnel and damage the tunnel structure; when the water quality is poor, impurities can easily clog the valve, affecting its normal operation and reducing the reliability and service life of the device.

[0006] (3) Disconnection between monitoring and control: Currently, the monitoring system and the pressure relief control system are independent of each other, and data cannot be shared and processed in real time. The monitored groundwater data cannot be fed back to the pressure relief control link in a timely manner, resulting in the inability to accurately control according to actual conditions. This makes the groundwater management of the entire subway tunnel lack systematicity and effectiveness, making it impossible to achieve comprehensive and efficient management of groundwater, and reducing the subway tunnel's ability to deal with groundwater problems. Summary of the Invention

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

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

[0009] A convenient intelligent check valve with integrated monitoring and pressure relief for use in subway tunnels, comprising a valve body, one end of which is connected to a water inlet pipe and the other end of which is provided with a water outlet, and a valve core is provided in the valve body; further comprising a monitoring unit and a swing pressure relief structure, the monitoring unit being arranged on the outer side of the water inlet pipe, the swing pressure relief structure being arranged on the top of the water inlet pipe, the monitoring unit being composed of a monitoring component and a monitoring contact arm, the monitoring component being connected to the monitoring contact arm, and the monitoring contact arm being passed 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, 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.

[0011] Preferably, 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, for monitoring water pressure and transmitting water pressure signals 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, for monitoring water inlet flow and transmitting flow signals 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, for monitoring the acidity and alkalinity of water quality and transmitting signals to the data integration module.

[0012] Preferably, 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.

[0013] Preferably, 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, which is used to analyze and process the received water pressure, water inlet flow and water quality pH signal data, including obtaining the drainage volume based on 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.

[0014] Preferably, 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 the 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.

[0015] Preferably, the swing pressure relief structure includes a valve disc, which is fixedly connected to a rocker arm, which is connected to a bracket via a hinge bolt, and the bracket is fixed to the inside of 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, 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.

[0016] Preferably, 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.

[0017] Preferably, a plurality of groups of stabilizing wings are symmetrically provided on the outer surface of the valve body, and the stabilizing wings are fixedly connected to the outer wall of the valve body to enhance the stability of the valve body when installed in a subway tunnel; a sand retaining net is provided above the monitoring contact arm, and the two ends of the sand retaining net are respectively fixedly connected to the two sides of the inner wall of the water inlet pipe to intercept sand 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, 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.

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

[0020] (1) The present invention is capable of acquiring water condition data such as water pressure, flow rate, and water quality acidity and alkalinity in the water inlet pipe in real time by providing a monitoring component including a pressure sensor, a flow sensor, and a pH sensor. These sensors are connected to a data integration module, and multiple groups of sensor components are connected in parallel to ensure the stability and independence of data acquisition. 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, thereby realizing accurate monitoring and recording of relevant data in the subway tunnel, providing a reliable basis for subsequent decision-making.

[0021] (2) The present invention utilizes the early warning module and wireless transmission module in the data integration module. When the processed signal data exceeds the preset range, the early warning module sends a warning signal and transmits the data and the warning signal to the external terminal through the wireless transmission module. At the same time, the valve disc of the swing 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 valve disc rotation angle is limited by the limit plate to ensure that the pressure relief process is safe and reliable. This intelligent control method can automatically adjust the valve state according to the monitoring data, realize the intelligent control of the water flow and pressure in the subway tunnel, and can better cope with the complex changes in the groundwater environment compared to traditional single-function valves.

[0022] (3) The present invention enhances stability during installation in subway tunnels by providing stabilizing wings on the outer surface of the valve body. The sand retaining net above the monitoring arm can intercept sand impurities, protect the sensor and valve components, and extend the service life of the equipment. The sleeve and clamping design at the water outlet allows the valve body to be connected to the grouting hole in the subway tunnel through the clamping device, facilitating installation and disassembly, facilitating daily maintenance and replacement of the equipment, reducing maintenance costs, and improving the operating efficiency of subway tunnel-related facilities.

[0023] (4) The present invention uses a pressure sensor to measure water pressure, and obtains the water discharge volume based on the flow sensor data combined with the check valve opening time. At the same time, feedback control is achieved by setting a threshold in the data integration module. Specifically, when the water pressure is not less than the set threshold, the valve disc of the swing pressure relief structure opens to release the pressure, discharging the pressure exceeding the threshold, achieving a pressure reduction effect, and avoiding deformation caused by excessive water pressure around the subway tunnel. In particular, when the pressure in the circumferential direction of the tunnel is inconsistent, it can effectively prevent uneven deformation of the tunnel segments, thereby avoiding cracking at the joints, and maintaining the water pressure around the subway tunnel at an appropriate value. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A cross-sectional view of the structure provided in Example 1 of the present invention;

[0026] Figure 2 A schematic diagram of the connection relationship of the monitoring unit provided in Example 1 of the present invention;

[0027] Figure 3 This is a schematic diagram of the connection relationship of the data integration module provided in Example 1 of the present invention.

[0028] Description of reference numerals:

[0029] 1. Valve body; 2. Water inlet pipe; 3. Sand retaining net; 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; 14. Casing; 15. Connector; 16. Stabilizer wing; 17. Power module; 18. Pressure sensor; 19. Flow sensor; 20. pH 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 DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Example 1

[0033] like Figure 1 As shown, this embodiment provides a convenient integrated monitoring and pressure relief intelligent check valve for use in subway tunnels, which 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 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 a water outlet end 13. The valve core 12 is installed inside the valve body 1. The monitoring unit is located on the outside of the water inlet pipe 2 and consists of a monitoring component 10 and a monitoring contact arm 11. The monitoring contact arm 11 passes through the water inlet pipe 2 and is used to collect water condition data. The monitoring component 10 includes multiple sets of sensor components, a data integration module 21, and a power module 17. The multiple sets of sensor components include a pressure sensor 18, a flow sensor 19, and a pH sensor 20. They are 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, respectively. These sensor components are connected in parallel to ensure the stability and independence of data collection. Among them, the pressure sensor 18 uses a high-precision strain gauge pressure sensor with a measurement accuracy of up to ±0.5% FS and a range of 0-10MPa, which can accurately measure the pressure changes of groundwater in the subway tunnel. The flow sensor 19 uses an electromagnetic flow sensor with a measurement accuracy of ±1% and a range of 0-50m3 / h, meeting measurement requirements under different flow conditions. The pH sensor 20 uses a glass electrode pH sensor with a measurement accuracy of ±0.01pH and a measurement range of 0-14pH, capable of accurately monitoring the pH of groundwater. Furthermore, the first, second, and third transmission channels 22, 23, and 24 all utilize shielded twisted-pair cables to reduce external electromagnetic interference and ensure accurate transmission of sensor-collected data to the data integration module 21. The transmission channel's core is made of high-purity oxygen-free copper, characterized by low resistance and high conductivity, ensuring stable signal transmission.

[0034] The swing pressure relief structure is located at the top of the water inlet pipe 2 and includes a valve disc 7, a hinge bolt 9, a bracket 5, and a valve seat 8. The valve disc 7 is fixedly connected to a rocker arm 6, which is connected to the bracket 5 fixed inside the valve body 1 via a hinge bolt 9. The valve disc 7 can rotate around the hinge bolt 9 to control 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 is equipped with a sealing gasket at the contact point with the valve disc 7 to enhance the sealing effect.

[0035] The outer surface of the valve body 1 is symmetrically provided with multiple sets of stabilizing wings 16, which 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 retaining net 3 is provided above the monitoring contact arm 11, with its ends fixed to the inner wall of the water inlet pipe 2 on both sides to intercept sand impurities and protect the sensor and valve components. A sleeve 14 is provided at the water outlet 13. The inner diameter of the sleeve 14 is larger than the diameter of the valve body 1 and is sleeved on the outer surface of the valve body 1. Clips 15 are provided on the outer surfaces of both sides of the sleeve 14. The valve body 1 is connected to the grouting holes in the subway tunnel via the clips 15, facilitating installation and removal.

[0036] In addition, the monitoring component 10 mainly realizes its functions by the data integration module 21. Figure 2 and Figure 3The 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 acidity and alkalinity data collected by the pressure sensor 18, the flow sensor 19 and the 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, comparing them with the preset normal range values. Secondly, the power supply module 17 is a built-in battery, which is electrically connected to the data integration module 21, the pressure sensor 18, the flow sensor 19 and the pH sensor 20 respectively to provide stable power to each component. The pressure sensor 18, the flow sensor 19 and the pH sensor 20 are electrically connected in parallel to ensure that each sensor works independently and does not interfere with each other. The power module 17 has overcharge protection, over-discharge protection and power monitoring functions to prevent the battery from being damaged by overcharging or discharging. At the same time, it can monitor the battery power in real time. When the power is lower than the preset value by 10%, a low power warning message is sent 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 processes water pressure and discharge volume data. Water pressure data collected by the pressure sensor 18 is transmitted to the data processing module 26 in real time and compared with a pre-set pressure threshold. The flow rate data collected by the flow sensor 19 is combined with the check valve opening time, and the data processing module 26 calculates the discharge volume and analyzes the discharge volume data. If the water pressure is not less than the set threshold, the data processing module 26 issues a command to control the valve disc 7 of the swing pressure relief mechanism to rotate around the hinge bolt 9 to open and release the pressure. When the water pressure falls below the set threshold, the valve disc 7 remains closed. Throughout this process, if the water pressure or discharge volume is abnormal, the warning module 28 issues a warning signal of different levels based on the degree of abnormality. The wireless transmission module 29 transmits the water pressure, discharge volume data, and the warning signal to an external terminal. It should be noted that the opening and closing of the valve disc 7 is determined solely by the relationship between the water pressure and discharge volume and the set threshold, and is unrelated to water quality monitoring data, the purpose of which is to effectively manage the water conditions in the subway tunnel.

[0038] If data processing module 26 determines that the data exceeds the normal range, it stores the processed data in storage module 27 and simultaneously triggers warning module 28. Warning module 28 issues different levels of warning signals based on the degree of the out-of-range condition, such as a yellow warning for minor anomalies and a red warning for severe anomalies. Wireless transmission module 29 transmits the processed signal data and warning signal via wireless communication methods such as Bluetooth, Wi-Fi, or LoRa to an external terminal, such as a computer in the monitoring room or a staff member's handheld device, so that staff can promptly understand the groundwater conditions in the subway tunnel. Simultaneously, valve disc 7 rotates around hinge bolt 9 under the action of water pressure to open, allowing groundwater to flow through inlet pipe 2 and valve body 1 from outlet end 13. The discharged water flows through sleeve 14 to an external pipe connected to the outside, and is then diverted into the subway tunnel's drainage system, preventing damage to the rails and pipe fittings, thereby achieving the pressure relief function. Furthermore, a limit plate 4 is fixed to the inner wall of valve body 1, limiting the rotation angle of valve disc 7 and preventing it from excessively opening or closing, ensuring a safe and reliable pressure relief process.

[0039] Working Principle: First, the check valve provided in this embodiment is inserted into the reserved grouting hole in the subway tunnel and secured. Then, under the action of water pressure, the valve disc 7 and rocker arm 6 in the swing-open pressure relief structure are connected to the bracket 5 via the hinge bolt 9. When the water pressure is sufficiently high, the valve disc 7 and rocker arm 6 rotate around the hinge bolt 9 to open. The sealing gasket at the contact point between the valve seat 8 at the top of the water inlet pipe 2 and the valve disc 7 is no longer tightly fitted, and groundwater is discharged from the water outlet 13 through the valve body 1 through the water inlet pipe 2. The groundwater is then diverted to the subway tunnel's drainage system through the casing 14 and the external drainage pipe, thereby achieving pressure relief. Simultaneously, the monitoring component 10 begins operating, the monitoring arm 11 begins monitoring groundwater information, and the corresponding pressure sensor 18, flow sensor 19, and pH sensor 20 continuously collect water condition data in the water inlet pipe 2, respectively obtaining information on water pressure, water flow, and water quality pH. The collected signal data is then stably and independently transmitted to the signal receiving module 25 in the data integration module 21 via the 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 monitor the drainage volume based on the flow sensor 18 and compare the set threshold in the data processing module 26 with the collected water pressure data. Specifically, if the water pressure is greater than or equal to the set threshold, the valve disc 7 is immediately controlled to open and release pressure; if the water pressure is lower than the threshold, the valve disc 7 remains closed. Throughout the operation, the water pressure and drainage volume are continuously monitored. If an abnormality occurs, the early warning module 28 issues an early warning, and the wireless transmission module 29 transmits the relevant data and warning information to an external terminal. In addition, the entire process aims to ensure appropriate water pressure around the tunnel and provide auxiliary data support for water quality monitoring. The processed signal data is then stored in storage module 27 for subsequent query and analysis. If the processed signal data exceeds a normal threshold, preferably when the groundwater pH value is acidic or alkaline, data processing module 26 sends a signal to warning module 28 and wireless transmitter module 29, respectively. Upon receiving the signal, warning module 28 immediately activates the warning mechanism. Different levels of warning signals are issued based on the pre-set degree of pH abnormality. When the pH value is slightly below or above the normal range, a yellow warning is issued, alerting personnel to changes in groundwater quality. If the pH value deviates significantly from the normal range, potentially causing significant damage to the tunnel structure, a red warning is issued, warning personnel to take immediate action. Simultaneously, upon receiving the signal from data processing module 26, wireless transmitter module 29 transmits the processed signal data, including the abnormal groundwater pH value, and the warning information via wireless communication to an external terminal. The external terminal can be a computer in the monitoring center or a mobile device carried by personnel. Monitoring center personnel can use specialized monitoring software to visually view the abnormal groundwater pH value and the specific location of the abnormality.

[0040] Therefore, the above-mentioned convenient monitoring and pressure relief integrated intelligent check valve for subway tunnels is used to realize real-time and accurate monitoring of groundwater in subway tunnels, intelligent pressure relief and integrated coordinated management of monitoring, effectively improving the safety and stability of subway tunnels.

[0041] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A portable integrated monitoring and pressure relief 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 of which 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 outer 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, for monitoring water condition data in the water inlet pipe; 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; The multiple groups of sensor components include pressure sensors, flow sensors, and pH sensors. The pressure sensors are connected to the data integration module and the monitoring contact arm respectively through a first transmission channel, and are used to monitor water pressure and transmit water pressure signals to the data integration module; the flow sensors are connected to the data integration module and the monitoring contact arm respectively through a second transmission channel, and are used to monitor water inflow and transmit flow signals to the data integration module; the pH sensors are connected to the data integration module and the monitoring contact arm respectively through a third transmission channel, and are used to monitor the pH of water and transmit signals to the data integration module; 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 which is connected to a data processing module. The data processing module is used to analyze and process the received water pressure, water inlet flow rate, and water quality pH signal data, including obtaining the discharge volume based on the water inlet flow rate and setting a threshold value. The water pressure data collected by the monitoring component is compared 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, discharging the pressure exceeding the set threshold value, thereby monitoring and regulating the water pressure around the subway tunnel to achieve pressure relief. A plurality of groups of stabilizing wings are symmetrically provided on the outer surface of the valve body, and the stabilizing wings are fixedly connected to the outer wall of the valve body to enhance the stability of the valve body when installed in a subway tunnel; a sand retaining net is provided above the monitoring contact arm, and the two ends of the sand retaining net are respectively fixedly connected to the two sides of the inner wall of the water inlet pipe to intercept sand impurities in the water inlet pipe.

2. The portable integrated monitoring and pressure relief intelligent check valve for subway tunnels according to claim 1 is characterized in that: The monitoring component also includes a power module, which is a built-in battery. It 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.

3. The portable integrated monitoring and pressure relief intelligent check valve for subway tunnels according to claim 1 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 the 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.

4. The portable integrated monitoring and pressure relief intelligent check valve for subway tunnels according to claim 1 is characterized in that: The swing pressure relief structure includes a valve disc, which is fixedly connected to a rocker arm. The rocker arm is connected to a bracket via a hinge bolt. The bracket is fixed to the inside of 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 portion between the valve seat and the valve disc.

5. The portable integrated monitoring and pressure relief intelligent check valve for subway tunnels according to claim 4 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.

6. The portable integrated monitoring and pressure relief intelligent check valve for subway tunnels according to claim 1 is characterized in that: 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, 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.

Images