Exhaust valve with water leakage infrasonic wave monitoring function

Abstract

The utility model discloses an exhaust valve with a water leakage infrasonic wave monitoring function, the side surface of a lower chamber is provided with a connecting port, the connecting port is detachably connected with a water leakage noise monitoring device, the water leakage noise monitoring device comprises a noise monitoring sensor, a sound insulation waterproof plug, a field processor and a communication device, the field processor and the communication device are both arranged in the shell of the water leakage noise monitoring device, the sound insulation waterproof plug is arranged in the connecting port, a noise monitoring sensor in the water leakage noise monitoring device is arranged in the lower cavity, and the noise monitoring sensor makes contact with liquid in the lower cavity. An output line of the noise monitoring sensor penetrates through the sound insulation waterproof plug to be connected with the field processor, and the field processor receives signals of the noise monitoring sensor and then transmits the signals to the monitoring device through the communication circuit. The water leakage noise monitoring device has the advantages that the working operation state of the exhaust valve is detected through the arranged detection device, the defect that pipeline opening is needed for installation of a water leakage noise monitoring device (hydrophone) is overcome, and the water leakage noise monitoring device can be used for overall leakage monitoring of a water supply pipe network.

Description

Technical Field

[0001] The utility model relates to a water pipeline measurement technology, in particular to an exhaust valve with a water leakage infrasonic wave monitoring function. Background Art

[0002] The exhaust valve is used to exhaust gas in pipelines such as water systems. When gas overflows in the system, the gas will climb up along the pipeline and eventually gather at the highest point of the system. The exhaust valve is generally installed at the highest point of the system. When the gas enters the exhaust valve cavity, it gathers at the upper part of the exhaust valve. As the gas in the valve increases, the pressure rises. When the gas pressure is greater than the system pressure, the gas will cause the water level in the cavity to drop, and the float will drop with the water level, opening the exhaust port. After the gas is exhausted, the water level rises, and the float also rises, closing the exhaust port.

[0003] For example, an anti-water hammer air valve with a monitoring system, the anti-water hammer air valve includes a valve body and a valve cover; the bottom of the valve body and the top of the valve cover are both provided with openings; the inner cavity of the valve cover is provided with a high-speed exhaust throttling device composed of a throttling cylinder and a throttling plate; the inner cavity of the valve body is provided with a high-speed air intake and exhaust device; the high-speed air intake and exhaust device is composed of a casing, a float and a sliding body; the inner cavity of the valve body is provided with a casing with a top opening, an annular cavity is formed between the casing and the valve body, a plurality of exhaust windows are evenly distributed on the upper part of the casing, an opening is provided at the bottom of the casing, a float is provided in the inner cavity of the casing and a sliding body which is pressed on the float and can slide up and down along the inner wall of the casing, the sliding body slides up and down to close or open the exhaust window; an exhaust hole which runs through from top to bottom and a micro-valve seat installed at the bottom of the exhaust hole are provided in the center of the sliding body; a protective cover is provided on the top of the valve cover.

[0004] Many detection devices are also willing to be connected to the exhaust valve as the entrance for data collection, because the exhaust valve is often located at some high points in the system, so the accuracy of data collection will be relatively good. However, if processing operations such as drilling holes are performed on the existing pipeline exhaust valve, the installation of detection equipment will damage the integrity of the equipment. In addition, the current installed detection equipment is detected separately for each node, lacking overall coordination, and not making good use of the advantage of the exhaust valve being located at the high point of the system. Therefore, it is necessary to design an exhaust valve with a water leakage infrasonic monitoring function that can realize the integrated detection of the exhaust valve and has certain interconnection functions. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The existing pipelines do not have reserved hydrophone detection ports and lack overall coordination. The water leakage noise monitoring device (hydrophone probe) is difficult to install and requires breaking the pipe to make a hole. The installation is difficult and is not conducive to the water leakage detection of large-diameter pipelines. The utility model provides an exhaust valve with a water leakage noise monitoring function, thereby solving the problems existing in the prior art.

[0007] (II) Technical solution

[0008] In order to realize the above-mentioned exhaust valve sealing self-check function and pipeline leakage detection function, the specific technical scheme adopted by the utility model is as follows:

[0009] An exhaust valve with a water leakage infrasonic wave monitoring function comprises an exhaust valve, wherein the exhaust valve is divided into an upper chamber and a lower chamber, the lower chamber is connected to a measured pipeline, a float device is arranged inside the lower chamber, a throttle plug and a throttle cylinder are arranged in the upper chamber, an exhaust device is arranged in the upper chamber, the float device is linked to the exhaust device through the throttle plug and the throttle cylinder, a connecting port is opened on the side of the lower chamber, a water leakage noise monitoring device is detachably connected to the connecting port, the water leakage noise monitoring device comprises a noise monitoring sensor, a sound insulation and waterproof plugging, a field processor and a communication device, the field processor and the communication device are both arranged in a shell of the water leakage noise monitoring device, the sound insulation and waterproof plugging is arranged in the connecting port, the noise monitoring sensor in the water leakage noise monitoring device is arranged in the lower chamber, the noise monitoring sensor is in contact with the liquid in the lower chamber, the output line of the noise monitoring sensor passes through the sound insulation and waterproof plugging and is connected to the field processor, and the field processor receives the signal of the noise monitoring sensor and transmits it to the monitoring device through the communication circuit.

[0010] The leakage monitoring device in the utility model is a device that can amplify, filter, collect, process and remotely analyze the infrasound signal generated by leakage in the pipeline. The on-site processor can be a small low-power processor of various types such as DSP, ARM, MCU, etc. As long as the on-site processor can meet the requirements of low-power preliminary calculation, data reception and data transmission, it can be selected. The leakage monitoring sensor is an infrasound hydrophone. In the utility model, the exhaust valve and the leakage infrasound monitoring device are detachable integrated devices with strong integrity and no need to destroy the original equipment, so it has high stability. At the same time, the device takes into account the problem of vibration waterproof sealing, and effectively seals the connection part to ensure the effectiveness of the leakage infrasound signal collection after the internal and external connections. In addition, the utility model adopts a stable communication method. After the leakage infrasound data generated by the pipeline leakage monitoring coverage is collected and uploaded to the cloud platform, subsequent processing and analysis can be carried out. The cloud platform can obtain data from multiple leakage infrasound monitoring devices for collaborative analysis. With the help of the utility model, not only the individual node data can be judged, but also the overall situation of the system can be judged, which greatly improves the use of the data obtained by the utility model.

[0011] Preferably, the noise monitoring sensor is electrically connected to the on-site processor through a signal amplification circuit, and the signal amplification circuit includes a processing chip U15, an interface J7, an operational amplifier U13, an operational amplifier LM358, a crystal oscillator G2, a diode D12, a diode D13 and a bidirectional diode D19. The processing chip U15 is a single-chip microcomputer. The connecting line of the water leakage noise monitoring device is connected to the interface J7. The second pin of the interface J7 is grounded. The first pin of the interface J7 is connected to the positive input end of the operational amplifier U13 through a resistor R63. The second end of the resistor R63 is connected to the power supply through diodes D12 and D13 respectively. The second end of the resistor R63 The ends are grounded through bidirectional diodes D19 and resistors R110, the output end of the operational amplifier U13 is connected to the negative input end of the operational amplifier U13 and the third pin of the operational amplifier LM358, the fifth, sixth and seventh pins of the operational amplifier LM358 are connected to the field processor, the fourth and eighth pins of the operational amplifier LM358 are connected to the power supply, the second pin of the operational amplifier LM358 is grounded, the output end of the operational amplifier LM358 is connected to the first analog input port of the processing chip U15, the SD1 port, SD0 port and SCLK port of the processing chip U15 are connected to the field processor for AD conversion, and the processing chip U15 is configured with an independent crystal oscillator G2. The utility model adopts a multi-stage amplification contrast filtering technology, so that the analog signal obtained by the noise monitoring sensor can be directly processed in a better pre-processing, reducing the consumption of the later data processing. The processing chip U15 in the utility model is a single-chip microcomputer with an AD conversion function.

[0012] Preferably, the second end of the resistor R63 is connected to the positive analog power supply through the diode D12, the second end of the resistor R63 is connected to the negative analog power supply through the reversely connected diode D13, the VA+ terminal and VREF+ terminal of the processing chip U15, the 8th pin of the LM358, and the positive power supply terminal of the operational amplifier U13 are respectively connected to the positive analog power supply, and the VA- terminal and VREF- terminal of the processing chip U15, the 7th pin of the LM358, and the negative power supply terminal of the operational amplifier U13 are respectively connected to the negative analog power supply. The utility model introduces the comparison of positive and negative reference voltages, thereby ensuring the effectiveness of the preliminary processing.

[0013] Preferably, the connection port is a horizontally arranged circular external thread connection port, the water leakage noise monitoring device is integrally screwed on the connection port, the sound insulation and waterproof plugging of the water leakage noise monitoring device is a cylindrical flexible rubber column, the outer diameter of the sound insulation and waterproof plugging is equal to the inner diameter of the connection port, and the connection line of the water leakage noise monitoring device passes through the sound insulation and waterproof plugging and is connected to the interface J7. The cylindrical flexible rubber column is used as a plugging to reduce the data impact caused by the addition of the water leakage noise monitoring device and ensure the accuracy of the data.

[0014] Preferably, the field processor is connected to the monitoring device through the NB communication circuit; the NB communication circuit includes an eSIM reading circuit, an NB power supply circuit, an NB communication chip, an RF antenna, and a data transmission circuit, the NB communication chip is powered by the NB power supply circuit, the USIM end of the NB communication chip is connected to the SIM card through the eSIM reading circuit, the NB communication chip is connected to the monitoring device with a display through the RF antenna, and the NB communication chip is connected to the field processor through the data transmission circuit. The low-energy supply of the NB communication circuit is fully utilized in the utility model to ensure the long-term effectiveness of the device. In addition, even if the utility model needs to be adjusted, it can be directly taken out in a detachable manner.

[0015] Preferably, the NB power supply circuit is a dual-power-supply LC voltage regulator circuit, and the RF antenna is a dual-frequency communication RF antenna.

[0016] Preferably, the data transmission circuit includes a transistor Q6, a transistor Q7, a resistor R13, a resistor R14 and an interface J12, the RXD end of the NB communication chip is connected to the collector of the transistor Q6 and the first end of the resistor R3, the second end of the resistor R3 is connected to the VDD_EXT end of the NB communication chip, the second end of the resistor R3 is connected to the VDD_EXT end of the NB communication chip, the emitter of the transistor Q6 is connected to the interface J12 through the resistor R13, and the base of the transistor Q6 is connected to the NB through a resistor and a capacitor. The VDD_EXT end of the communication chip is connected, the TXD end of the NB communication chip is connected to the emitter of the transistor Q7, the collector of the transistor Q7 is connected to the interface J12 through a resistor R14, the collector of the transistor Q7 is connected to the NB power supply circuit through a resistor, the base of the transistor Q7 is connected to the VDD_EXT end of the NB communication chip through a resistor and a capacitor respectively, the GND end of the NB communication chip is grounded, and the GND end of the NB communication chip is connected to the VDD_EXT end of the NB communication chip through a capacitor C16. The utility model adopts the RXD and TXD read-write mode for data transmission, and the transmission process is stable and reliable. The NB_VDD_EXT end of the NB chip provides a filtered power supply to reduce the influence of power supply noise on the circuit, thereby improving the stability and performance of the circuit.

[0017] Preferably, the shell of the water leakage noise monitoring device is a rectangular plastic sealing device, and a sound-insulating and shock-proof flexible body is filled in the plastic sealing device.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the utility model provides an automatic exhaust valve with pipeline leakage detection function, which has the following features:

[0020] Beneficial effects:

[0021] In the present invention, the exhaust valve and the water leakage noise monitoring device are detachable integrated devices with strong integrity. There is no need to destroy the original equipment, so it has high stability. At the same time, the device takes vibration and waterproofing into consideration and effectively isolates the connection port to ensure the effectiveness of data collection after internal and external separation. In addition, the present invention adopts a stable communication method. After collecting the noise data of each high point in the water system, it can be handed over to the monitoring equipment for subsequent processing and analysis. The monitoring equipment can obtain data from multiple noise monitoring sensors. With the help of the present invention, it can not only judge the data of a single node, but also judge the overall situation of multiple systems, which greatly improves the use of the data obtained by the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 is a schematic diagram of the coordination between the exhaust valve and the water leakage noise monitoring device in this embodiment;

[0024] Figure 2 is a circuit schematic diagram of the signal amplification circuit in this embodiment;

[0025] Figure 3 is a circuit schematic diagram of the first part of the NB communication circuit in this embodiment;

[0026] Figure 4 is a circuit schematic diagram of the second part of the NB communication circuit in this embodiment;

[0027] Figure 5 is a circuit block diagram of this embodiment;

[0028] In the figure: 1. Water leakage noise monitoring device, 2. Exhaust valve, 3. Noise monitoring sensor, 4. Sound insulation and waterproof sealing, 5. Water leakage noise monitoring device housing, 21. Upper chamber, 22. Lower chamber. DETAILED DESCRIPTION

[0029] For further explanation, the present invention is provided with accompanying drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0030] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1 and attached Figure 5 This embodiment is installed at each high node in the water pipe system. It is a detachable integrated device, including an exhaust valve 2. The exhaust valve is divided into an upper chamber and a lower chamber. The lower chamber is connected to the measured pipe. A floating ball device is arranged inside the lower chamber. A throttling plug and a throttling cylinder are arranged in the upper chamber. An exhaust device is arranged in the upper chamber. The floating ball device is linked to the exhaust device through the throttling plug and the throttling cylinder. In this embodiment, an exhaust valve to prevent water hammer effect is used as an auxiliary device. Figure 1The exhaust valve example in the embodiment may be other exhaust valves. This embodiment does not specifically limit this. In this embodiment, a connection port is provided on the side of the lower chamber, and a water leakage noise monitoring device 1 is detachably connected to the connection port. The water leakage noise monitoring device includes a noise monitoring sensor 3, a sound insulation and waterproof plug 4, a field processor and a communication device. The field processor and the communication device are both arranged in the shell of the water leakage noise monitoring device. The sound insulation and waterproof plug is arranged in the connection port. The noise monitoring sensor in the water leakage noise monitoring device is arranged in the lower chamber. The noise monitoring sensor is in contact with the liquid in the lower chamber. The output line of the noise monitoring sensor passes through the sound insulation and waterproof plug and is connected to the field processor. The shell 5 of the water leakage noise monitoring device is a rectangular plastic sealing device. The plastic sealing device is filled with a sound insulation and shockproof flexible body. The flexible body here can be a sponge filler. After receiving the signal from the noise monitoring sensor, the field processor transmits it to the monitoring device through the communication circuit. The connection port of this embodiment is a horizontally arranged circular external thread connection port, the water leakage noise monitoring device is integrally screwed on the connection port, the sound insulation and waterproof plugging of the water leakage noise monitoring device is a cylindrical flexible rubber column, the outer diameter of the sound insulation and waterproof plugging is equal to the inner diameter of the connection port, and the connection line of the water leakage noise monitoring device passes through the sound insulation and waterproof plugging and is connected to the interface J7. The cylindrical flexible rubber column in this embodiment is used as a plugging to reduce the data impact caused by the addition of the water leakage noise monitoring device and ensure the accuracy of the data.

[0031] The leakage monitoring device in the utility model is a device that can amplify, filter, collect, process and remotely analyze the infrasound signal generated by leakage in the pipeline. The field processor can be a small low-power processor of various types such as DSP, ARM, MCU, etc. As long as the field processor can meet the requirements of low-power preliminary calculation, data reception and data transmission, it can be selected. The leakage noise monitoring sensor is an infrasound hydrophone. In this embodiment, the exhaust valve and the water leakage noise monitoring device are detachable integrated devices with strong integrity, and there is no need to destroy the original equipment, so it has high stability. At the same time, considering the problem of vibration and waterproofing, the device effectively isolates the connection port to ensure the effectiveness of data collection after internal and external separation. In addition, this embodiment adopts a stable communication method. After the noise data of each high point position in the water system is collected, it can be handed over to the monitoring device for subsequent processing and analysis. The monitoring device can obtain the data of multiple noise monitoring sensors. With the help of this implementation case, it can not only judge the data of a single node, but also judge the overall situation of multiple systems, which greatly improves the use of the data obtained in this embodiment. The processing of collected data by the monitoring equipment is not within the scope of protection of the present utility model. This embodiment only protects the specific structure and circuit form of the exhaust valve with water leakage noise monitoring function. The application of multi-data collection formed by this implementation case in cooperation with an industrial computer is a normal application form of this embodiment.

[0032] For further information, see Appendix Figure 3 The noise monitoring sensor is electrically connected to the field processor through a signal amplification circuit. The signal amplification circuit includes a processing chip U15, an interface J7, an operational amplifier U13, an operational amplifier LM358, a crystal oscillator G2, a diode D12, a diode D13 and a bidirectional diode D19. The processing chip U15 is a single-chip microcomputer. The connection line of the water leakage noise monitoring device is connected to the interface J7. The second pin of the interface J7 is grounded. The first pin of the interface J7 is connected to the positive input end of the operational amplifier U13 through a resistor R63. The second end of the resistor R63 is connected to the power supply through the diode D12 and the diode D13 respectively. The second end of the resistor R63 is divided into The output end of the operational amplifier U13 is connected to the negative input end of the operational amplifier U13 and the third pin of the operational amplifier LM358 respectively, the fifth, sixth and seventh pins of the operational amplifier LM358 are connected to the field processor, the fourth and eighth pins of the operational amplifier LM358 are connected to the power supply, the second pin of the operational amplifier LM358 is grounded, the output end of the operational amplifier LM358 is connected to the first analog input port of the processing chip U15, the SD1 port, SD0 port and SCLK port of the processing chip U15 are connected to the field processor for AD conversion, and the processing chip U15 is configured with an independent crystal oscillator G2. The second end of the resistor R63 is connected to the positive analog power supply through the diode D12, and the second end of the resistor R63 is connected to the negative analog power supply through the reversely connected diode D13. The VA+ terminal and VREF+ terminal of the processing chip U15, the 8th pin of the LM358, and the positive power supply terminal of the operational amplifier U13 are respectively connected to the positive analog power supply, and the VA- terminal and VREF- terminal of the processing chip U15, the 7th pin of the LM358, and the negative power supply terminal of the operational amplifier U13 are respectively connected to the negative analog power supply. The utility model introduces the comparison of positive and negative reference voltages, thereby ensuring the effectiveness of the preliminary processing. The utility model adopts a multi-stage amplification comparison and filtering technology, so that the analog signal obtained by the noise monitoring sensor can be directly processed in a better preliminary manner, reducing the consumption of the later data processing. The processing chip U15 in the utility model is a single-chip microcomputer with an ad conversion function.

[0033] For further information, see Appendix Figure 4 and attached Figure 5, the field processor is connected to the monitoring device through the NB communication circuit; the NB communication circuit includes an eSIM reading circuit, an NB power supply circuit, an NB communication chip, an RF antenna and a data transmission circuit, the NB communication chip is powered by the NB power supply circuit, the USIM end of the NB communication chip is connected to the SIM card through the eSIM reading circuit, the NB communication chip is connected to the monitoring device with display through the RF antenna, and the NB communication chip is connected to the field processor through the data transmission circuit. The utility model makes full use of the low energy supply of the NB communication circuit to ensure the long-term effectiveness of the device. In addition, even if the utility model needs to be adjusted, it can be directly taken out in a detachable manner. The data transmission circuit includes a transistor Q6, a transistor Q7, a resistor R13, a resistor R14 and an interface J12. The RXD end of the NB communication chip is connected to the collector of the transistor Q6 and the first end of the resistor R3. The second end of the resistor R3 is connected to the VDD_EXT end of the NB communication chip. The second end of the resistor R3 is connected to the VDD_EXT end of the NB communication chip. The emitter of the transistor Q6 is connected to the interface J12 through the resistor R13. The base of the transistor Q6 is connected to the NB communication chip through a resistor and a capacitor. The VDD_EXT end of the chip is connected, the TXD end of the NB communication chip is connected to the emitter of the transistor Q7, the collector of the transistor Q7 is connected to the interface J12 through a resistor R14, the collector of the transistor Q7 is connected to the NB power supply circuit through a resistor, the base of the transistor Q7 is connected to the VDD_EXT end of the NB communication chip through a resistor and a capacitor respectively, the GND end of the NB communication chip is grounded, and the GND end of the NB communication chip is connected to the VDD_EXT end of the NB communication chip through a capacitor C16. The utility model adopts RXD and TXD read and write methods for data transmission, and the transmission process is stable and reliable. The NB_VDD_EXT end of the NB chip provides a filtered power supply to reduce the influence of power supply noise on the circuit, thereby improving the stability and performance of the circuit.

[0034] In this embodiment, the NB power supply circuit is a dual-power LC voltage regulator circuit, and the RF antenna is a dual-frequency communication RF antenna.

[0035] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0036] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An exhaust valve with a water leakage infrasonic wave monitoring function, comprising an exhaust valve, the exhaust valve is divided into an upper chamber and a lower chamber, the lower chamber is connected to the measured pipeline, a floating ball device is arranged inside the lower chamber, a throttle plug and a throttle cylinder are arranged in the upper chamber, and an exhaust device is arranged in the upper chamber, the floating ball device is linked with the exhaust device through the throttle plug and the throttle cylinder, and is characterized in that: A connecting port is provided on the side of the lower chamber, and a water leakage noise monitoring device is detachably connected to the connecting port. The water leakage noise monitoring device includes a noise monitoring sensor, a sound insulation and waterproof seal, a field processor and a communication device. The field processor and the communication device are both arranged in the shell of the water leakage noise monitoring device, and the sound insulation and waterproof seal is arranged in the connecting port. The noise monitoring sensor in the water leakage noise monitoring device is arranged in the lower chamber, and the noise monitoring sensor is in contact with the liquid in the lower chamber. The output line of the noise monitoring sensor passes through the sound insulation and waterproof seal and is connected to the field processor. After receiving the signal of the noise monitoring sensor, the field processor transmits it to the monitoring equipment through the communication circuit.

2. The exhaust valve with water leakage infrasonic wave monitoring function according to claim 1 is characterized in that: The noise monitoring sensor is electrically connected to the on-site processor through a signal amplification circuit. The signal amplification circuit includes a processing chip U15, an interface J7, an operational amplifier U13, an operational amplifier LM358, a crystal oscillator G2, a diode D12, a diode D13 and a bidirectional diode D19. The processing chip U15 is a single-chip microcomputer. The connection line of the water leakage noise monitoring device is connected to the interface J7. The second pin of the interface J7 is grounded. The first pin of the interface J7 is connected to the positive input end of the operational amplifier U13 through a resistor R63. The second end of the resistor R63 is connected to the power supply through the diode D12 and the diode D13 respectively. The second end of the resistor R63 is connected to the power supply through the diode D12 and the diode D13 respectively. The output of the operational amplifier U13 is connected to the negative input of the operational amplifier U13 and the third pin of the operational amplifier LM358 respectively, the fifth, sixth and seventh pins of the operational amplifier LM358 are connected to the field processor, the fourth and eighth pins of the operational amplifier LM358 are connected to the power supply, the second pin of the operational amplifier LM358 is grounded, the output of the operational amplifier LM358 is connected to the first analog input port of the processing chip U15, the SD1 port, SD0 port and SCLK port of the processing chip U15 are connected to the field processor for AD conversion, and the processing chip U15 is configured with an independent crystal oscillator G2.

3. The exhaust valve with water leakage infrasonic wave monitoring function according to claim 1 is characterized in that: The second end of the resistor R63 is connected to the positive analog power supply through the diode D12, and the second end of the resistor R63 is connected to the negative analog power supply through the reverse-connected diode D13. The VA+ terminal and VREF+ terminal of the processing chip U15, the 8th pin of LM358, and the positive power supply terminal of the operational amplifier U13 are respectively connected to the positive analog power supply, and the VA- terminal and VREF- terminal of the processing chip U15, the 7th pin of LM358, and the negative power supply terminal of the operational amplifier U13 are respectively connected to the negative analog power supply.

4. The exhaust valve with water leakage infrasonic wave monitoring function according to claim 2 is characterized in that: The connection port is a horizontally arranged circular external thread connection port, the water leakage noise monitoring device is integrally screwed onto the connection port, the sound insulation and waterproof plugging of the water leakage noise monitoring device is a cylindrical flexible rubber column, the outer diameter of the sound insulation and waterproof plugging is equal to the inner diameter of the connection port, and the connecting line of the water leakage noise monitoring device passes through the sound insulation and waterproof plugging and is connected to the interface J7.

5. The exhaust valve with water leakage infrasonic wave monitoring function according to claim 1, characterized in that: The on-site processor is communicatively connected to the monitoring device via a NB communication circuit; the NB communication circuit includes an eSIM reading circuit, a NB power supply circuit, a NB communication chip, an RF antenna and a data transmission circuit, the NB communication chip is powered by the NB power supply circuit, the USIM end of the NB communication chip is connected to the SIM card via the eSIM reading circuit, the NB communication chip is connected to the monitoring device with a display via an RF antenna, and the NB communication chip is connected to the on-site processor via a data transmission circuit.

6. The exhaust valve with water leakage infrasonic wave monitoring function according to claim 5, characterized in that: The NB power supply circuit is a dual-power-supply LC voltage stabilizing circuit, and the RF antenna is a dual-frequency communication RF antenna.

7. The exhaust valve with water leakage infrasonic wave monitoring function according to claim 5, characterized in that: The data transmission circuit includes a transistor Q6, a transistor Q7, a resistor R13, a resistor R14 and an interface J12. The RXD end of the NB communication chip is connected to the collector of the transistor Q6 and the first end of the resistor R3, the second end of the resistor R3 is connected to the VDD_EXT end of the NB communication chip, the emitter of the transistor Q6 is connected to the interface J12 through the resistor R13, the base of the transistor Q6 is connected to the VDD_EXT end of the NB communication chip through a resistor and a capacitor respectively, the TXD end of the NB communication chip is connected to the emitter of the transistor Q7, the collector of the transistor Q7 is connected to the interface J12 through the resistor R14, the collector of the transistor Q7 is connected to the NB power supply circuit through a resistor, the base of the transistor Q7 is connected to the VDD_EXT end of the NB communication chip through a resistor and a capacitor respectively, the GND end of the NB communication chip is grounded, and the GND end of the NB communication chip is connected to the VDD_EXT end of the NB communication chip through a capacitor C16.

8. The exhaust valve with water leakage infrasonic wave monitoring function according to claim 2 is characterized in that: The shell of the water leakage noise monitoring device is a rectangular plastic sealing device, and a sound-insulating and shock-proof flexible body is filled in the plastic sealing device.

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