Gas pipe network safety monitoring equipment and method

Abstract

The invention provides a gas pipe network safety monitoring device and method, the device comprises an external encapsulation power supply and a remote terminal unit (RTU), the external encapsulation power supply is connected to the remote terminal unit (RTU), and the external encapsulation power supply and the remote terminal unit are arranged in a voltage regulation cabinet; the remote terminal unit (RTU) comprises internal components, namely a central processing unit, and the central processing unit is connected to an RS485 data interface module, an analog quantity acquisition module, an RJ45 interface module and the like. The limitation of a traditional RTU in the aspects of communication, data processing, security, data acquisition and storage, system expandability and the like is solved. The equipment can monitor the running state of the gas pipe network in real time, and automatically trigger alarm and danger elimination measures when detecting abnormity, so as to ensure the safe running of the gas pipe network. Meanwhile, the equipment has higher flexibility and expandability, and can adapt to pipe network monitoring systems with different scales and requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of gas pipeline network safety monitoring, and in particular to a gas pipeline network safety monitoring device and method. Background Art

[0002] As an indispensable infrastructure in urban life, the safe and stable operation of gas pipeline network plays a vital role in the smooth operation of society. In order to ensure the safety and reliability of gas pipeline network, remote terminal units (RTU) are widely used in gas pipeline network safety detection system. The system deploys sensors on the pipeline network to monitor the key parameters such as pressure, flow, temperature of gas pipeline in real time, and uploads these real-time data to the central monitoring center, so as to realize comprehensive monitoring and management of the operation status of the pipeline network.

[0003] However, the RTUs currently used in gas pipeline network monitoring systems have several technical limitations. Specifically, these problems mainly include: Limited communication methods: Traditional RTUs mostly use wired communication methods, which are limited by the wiring environment and distance, making it impossible to achieve remote data collection and monitoring. At the same time, wired communication methods also bring great costs and complexity in laying and maintenance.

[0004] Lack of data processing capabilities: The data processing capabilities of some traditional RTUs are relatively weak, making it difficult to cope with the needs of efficient processing and analysis of large amounts of real-time data. This leads to low data transmission efficiency and difficulty in ensuring real-time performance.

[0005] Safety hazards: Since the RTU is installed in a gas pipeline environment, if its internal circuit generates electric sparks, it is very likely to cause a gas safety accident, so safety issues cannot be ignored.

[0006] Limited data collection and storage capabilities: Existing RTUs have insufficient data collection channels and limited internal storage space, which limits their data collection and storage capabilities.

[0007] Poor system scalability: The hardware and software design of traditional RTUs lacks sufficient flexibility, making it difficult to quickly deploy and upgrade to adapt to pipeline monitoring systems of different scales and requirements, thus limiting the scalability and adaptability of the system.

[0008] In view of the above situation, it is necessary to develop a gas pipeline network safety monitoring equipment to solve the problems existing in the current technology, improve the performance and reliability of the pipeline network monitoring system, and thus ensure the safe operation of the gas pipeline network. Summary of the invention

[0009] In view of this, in order to solve the problems existing in the technical background, the present invention proposes a gas pipeline network safety monitoring device, and the specific technical solution is as follows:

[0010] A gas pipe network safety monitoring device comprises an external sealing power supply and a remote terminal unit (RTU), wherein the external sealing power supply is connected to the remote terminal unit (RTU), and the external sealing power supply and the remote terminal unit are arranged in a voltage regulating cabinet;

[0011] The external encapsulated power supply includes a lightning protection module, a power conversion module and an intrinsically safe power supply circuit;

[0012] The remote terminal unit (RTU) includes internal components, namely a central processing unit, the central processing unit is connected to an RS485 data interface module, an analog quantity acquisition module, a 5G module, a 4G module, a NB-IoT module, a Bluetooth module, an RJ45 interface module, a storage module, a real-time clock module, a knob module and a screen, the external encapsulated power supply is connected to a power management module to provide intrinsically safe power supply for the remote terminal unit (RTU) and prevent lightning from damaging the equipment, the remote terminal unit (RTU) also includes a backup battery and a power management module, the backup battery is connected to the power management module, and the power management module is connected to the internal components of the remote terminal unit (RTU) to manage the internal power supply of the RTU.

[0013] Furthermore, the power management module is connected to a backup battery.

[0014] A monitoring method for gas pipeline network safety monitoring equipment, including gas environment data fault diagnosis and intelligent processing, power state fault diagnosis and intelligent processing, peripheral equipment state fault diagnosis and intelligent processing and Internet of Things communication state fault diagnosis and intelligent processing. Based on the above-mentioned safety monitoring equipment, in the gas environment data fault diagnosis and intelligent processing, a remote terminal unit (RTU) collects Modbus data frames and analog signals reflecting gas environment data through an RS485 data interface module and an analog quantity acquisition module respectively. If the gas environment data exceeds the normal range critical value set by the operation and maintenance personnel, a risk alarm is triggered, and the alarm information is recorded, displayed and uploaded to the gas pipeline network intelligent management platform. At the same time, the sampling frequency and upload frequency are automatically increased, and corresponding risk elimination measures are automatically executed; when the risk is eliminated, the normal sampling frequency and normal upload are restored, and the corresponding risk elimination measures are automatically terminated.

[0015] Furthermore, the corresponding risk elimination measures include but are not limited to: controlling the exhaust system to open when combustible gas leaks; controlling the drainage system to open when the water level is too high; and controlling the fire extinguishing system to start when the temperature reaches a preset suspected combustion temperature value.

[0016] Furthermore, the power status fault diagnosis and intelligent processing, the remote terminal unit (RTU) detects its own power supply through the power management module, including the backup battery power, external sealing power input, etc. The remote terminal unit (RTU) switches to the backup battery in time when the power is off or the external power voltage is unstable, and the Internet of Things access mode automatically switches to NB-IoT to reduce power consumption and maintain continuous operation, and at the same time triggers the voltage instability / power off alarm, records, displays and uploads the alarm information to the gas network intelligent management platform.

[0017] Furthermore, for the peripheral device status fault diagnosis and intelligent processing, the remote terminal unit (RTU) converts the current signal of the current loop into a voltage signal through a precision resistor through the 250-ohm resistor of the analog acquisition module, and converts it into a digital signal through AD and transmits it to the multi-core processor. If the current is continuously lower than 2mA, an instrument fault or disconnection alarm is triggered, and the alarm information is recorded, displayed and uploaded to the gas pipeline network intelligent management platform.

[0018] The remote terminal unit (RTU) sends query commands to the designated intelligent instrument through the RS485 data interface module. If the designated peripheral device fails to respond after a timeout, it will try again. If it fails to respond again after a timeout, the instrument failure / disconnection alarm will be triggered, and the instrument failure / disconnection alarm will be recorded, displayed and reported.

[0019] Furthermore, in the fault diagnosis and intelligent processing of the IoT communication status, the remote terminal unit (RTU) self-checks the network data transmission status and diagnoses whether the IoT communication status is abnormal. This includes whether the network connection is normal, whether the data transmission rate is stable, etc. When the IoT communication status is abnormal, the remote terminal unit (RTU) attempts to reconnect. If it fails, it switches to the backup IoT communication mode, triggers the network abnormality alarm, records, displays and uploads the alarm information to the gas pipeline network intelligent management platform. After the remote terminal unit (RTU) disconnects from the network connection and restores the network connection, it re-uploads the data and alarm information pre-stored in the storage module to the gas pipeline network intelligent management platform.

[0020] Furthermore, the gas environment data includes but is not limited to: inlet and outlet pressure, temperature, flow, differential pressure, water level, access control signal, combustible gas concentration, leakage alarm signal, shut-off valve closing signal, and solenoid valve status.

[0021] The above technical solution has the following beneficial effects:

[0022] The present invention solves the limitations of traditional RTU in communication, data processing, security, data acquisition and storage, system scalability, etc. by combining an external encapsulated power supply with a remote terminal unit (RTU). The device can monitor the operating status of the gas pipeline network in real time, and automatically trigger alarms and troubleshooting measures when abnormalities are detected to ensure the safe operation of the gas pipeline network. At the same time, the device has high flexibility and scalability, and can adapt to pipeline monitoring systems of different scales and requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the module structure of a gas pipeline network safety monitoring device of the present invention;

[0024] Figure 2 The figure is a schematic diagram of the connection relationship of a remote terminal unit (RTU) of a gas pipeline network safety monitoring device of the present invention. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0026] Example 1, see Figure 1-Figure 2 As shown, a gas pipeline network safety monitoring device includes an external sealing power supply and a remote terminal unit (RTU), wherein the external sealing power supply is connected to the remote terminal unit (RTU), and the external sealing power supply and the remote terminal unit are arranged in a voltage regulating cabinet;

[0027] The external encapsulated power supply includes a lightning protection module, a power conversion module and an intrinsically safe power supply circuit;

[0028] The remote terminal unit (RTU) includes internal components, namely a central processing unit, the central processing unit is connected to an RS485 data interface module, an analog quantity acquisition module, a 5G module, a 4G module, a NB-IoT module, a Bluetooth module, an RJ45 interface module, a storage module, a real-time clock module, a knob module and a screen, the external encapsulated power supply is connected to a power management module to provide intrinsically safe power supply for the remote terminal unit (RTU) and prevent lightning from damaging the equipment, the remote terminal unit (RTU) also includes a backup battery and a power management module, the backup battery is connected to the power management module, and the power management module is connected to the internal components of the remote terminal unit (RTU) to manage the internal power supply of the RTU.

[0029] The internal circuits of the remote terminal unit (RTU) are designed with intrinsically safe circuits. Explosion-proof grade: Ex ib mb[ia Ga]IIB T4 Gb, high explosion-proof grade, can be directly installed in explosion-proof zone 1 and zone 2.

[0030] Embodiment 2, based on Embodiment 1, the central processor is connected to all other internal components of the RTU except the backup battery. The central processor is a multi-core processor architecture, multi-threaded processing tasks, tasks including but not limited to: data acquisition, fault diagnosis, issuing instructions, screen display, wireless communication, the 5G module, 4G module, NB-IoT module, RJ45 interface module provide a variety of ways to access the Internet of Things and the Internet for the internal components of the RTU, the 5G module, 4G module, NB-IoT module, RJ45 interface module provide low-speed, ultra-low-cost, low-power, wide and deep coverage, large connection requirements of the Internet of Things business

[0031] The remote terminal unit (RTU) is connected to the NTP server to automatically calibrate the real-time clock module. The analog quantity acquisition module adopts the 4-20mA.DC process control system analog signal transmission standard for collecting analog signals. The Bluetooth module is used by operation and maintenance personnel to diagnose on-site fault information, modify parameters, and perform maintenance. The storage module includes: DRAM, UFS flash memory; efficiently exchange and store large amounts of data.

[0032] The knob module is a push-type knob. The remote terminal unit (RTU) exchanges data with the smart meter via the RS485 data interface module. The communication protocol is the Modbus protocol. The screen is used to display content, including but not limited to: pressure value, differential pressure value, temperature value, gas concentration value, charging status, battery power, alarm information, network connection status. The RTU exchanges information with the server via a wireless network. Operation and maintenance personnel can configure the RTU collection cycle and upload cycle in single or batch configurations through the gas pipeline network intelligent management platform. The RTU software part is transplanted using the Linux system and compilation system, and can be upgraded and redeveloped online to increase system functions. The RTU adopts an intelligent and efficient gas pipeline network safety monitoring method.

[0033] Embodiment 3, a monitoring method for gas pipeline network safety monitoring equipment, including gas environment data fault diagnosis and intelligent processing, power supply status fault diagnosis and intelligent processing, peripheral device status fault diagnosis and intelligent processing and Internet of Things communication status fault diagnosis and intelligent processing, based on the above-mentioned safety monitoring equipment, in the gas environment data fault diagnosis and intelligent processing, the remote terminal unit (RTU) collects Modbus data frames and analog signals reflecting gas environment data through RS485 data interface module and analog quantity acquisition module respectively, if the gas environment data exceeds the normal range critical value set by the operation and maintenance personnel, it triggers a risk alarm, records, displays and uploads the alarm information to the gas pipeline network intelligent management platform, and automatically increases the sampling frequency and upload frequency, and automatically executes the corresponding risk elimination measures; when the risk is eliminated, the normal sampling frequency and normal upload are restored, and the corresponding risk elimination measures are automatically terminated. The corresponding risk elimination measures include but are not limited to: when combustible gas leaks, control the exhaust system to open; when the water level is too high, control the drainage system to open; when the temperature reaches the preset suspected combustion temperature value, control the fire extinguishing system to start. The power status fault diagnosis and intelligent processing, the remote terminal unit (RTU) detects its own power supply through the power management module, including the backup battery power, external casting power input, etc. The remote terminal unit (RTU) switches to the backup battery in time when the power is off or the external power supply voltage is unstable, and the Internet of Things access mode automatically switches to NB-IoT to reduce power consumption and maintain continuous operation, while triggering the voltage instability / power failure alarm, recording, displaying and uploading the alarm information to the gas pipeline network intelligent management platform. The peripheral device status fault diagnosis and intelligent processing, the remote terminal unit (RTU) converts the current signal of the current loop into a voltage signal through a precision resistor through the 250 ohm resistor of the analog acquisition module, and AD converts it into a digital signal and transmits it to the multi-core processor. If the current is continuously lower than 2mA, it triggers an instrument failure or disconnection alarm, and records, displays and uploads the alarm information to the gas pipeline network intelligent management platform. The remote terminal unit (RTU) sends a query command to the designated smart meter through the RS485 data interface module. If the designated peripheral device times out and fails to respond, it will retry. If it times out again and fails to respond, it will trigger the instrument failure / disconnection alarm, and record, display and report the instrument failure / disconnection alarm. In the IoT communication status fault diagnosis and intelligent processing, the remote terminal unit (RTU) self-checks the network data transmission status and diagnoses whether the IoT communication status is abnormal. This includes whether the network connection is normal and whether the data transmission rate is stable. When the IoT communication status is abnormal, the remote terminal unit (RTU) attempts to reconnect. If it fails, it switches to the backup IoT communication mode, triggers a network abnormality alarm, records, displays and uploads the alarm information to the gas pipeline network intelligent management platform. After the remote terminal unit (RTU) disconnects from the network and restores the network connection, the data and alarm information pre-stored in the storage module will be re-uploaded to the gas pipeline network intelligent management platform.The gas environment data include but are not limited to: inlet and outlet pressure, temperature, flow, differential pressure, water level, access control signal, combustible gas concentration, leakage alarm signal, shut-off valve closing signal, and solenoid valve status.

[0034] The basic principles and main features of the present invention are described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the invention shall be defined by the attached claims and their equivalents.

Claims

1. A gas pipeline network safety monitoring device, characterized in that: It includes an external encapsulation power supply and a remote terminal unit (RTU), wherein the external encapsulation power supply is connected to the remote terminal unit (RTU), and the external encapsulation power supply and the remote terminal unit are arranged in a voltage regulating cabinet; The external encapsulated power supply includes a lightning protection module, a power conversion module and an intrinsically safe power supply circuit; The remote terminal unit (RTU) includes internal components, namely a central processing unit, the central processing unit is connected to an RS485 data interface module, an analog quantity acquisition module, a 5G module, a 4G module, a NB-IoT module, a Bluetooth module, an RJ45 interface module, a storage module, a real-time clock module, a knob module and a screen, the external encapsulated power supply is connected to a power management module to provide intrinsically safe power supply for the remote terminal unit (RTU) and prevent lightning from damaging the equipment, the remote terminal unit (RTU) also includes a backup battery and a power management module, the backup battery is connected to the power management module, and the power management module is connected to the internal components of the remote terminal unit (RTU) to manage the internal power supply of the RTU.

2. A gas pipeline network safety monitoring device according to claim 1, characterized in that: The power management module is connected to the backup battery.

3. A monitoring method for gas pipeline network safety monitoring equipment, characterized in that: It includes gas environment data fault diagnosis and intelligent processing, power status fault diagnosis and intelligent processing, peripheral device status fault diagnosis and intelligent processing, and Internet of Things communication status fault diagnosis and intelligent processing. It is based on the safety monitoring equipment described in any one of claims 1-2. In the gas environment data fault diagnosis and intelligent processing, the remote terminal unit (RTU) collects Modbus data frames and analog signals reflecting the gas environment data through the RS485 data interface module and the analog acquisition module respectively. If the gas environment data exceeds the normal range critical value set by the operation and maintenance personnel, a risk alarm is triggered, and the alarm information is recorded, displayed and uploaded to the gas pipeline network intelligent management platform. At the same time, the sampling frequency and upload frequency are automatically increased, and corresponding risk elimination measures are automatically executed; when the risk is eliminated, the normal sampling frequency and normal upload are restored, and the corresponding risk elimination measures are automatically terminated.

4. A monitoring method for gas pipeline network safety monitoring equipment according to claim 3, characterized in that: The corresponding risk elimination measures include but are not limited to: controlling the exhaust system to open when combustible gas leaks; controlling the drainage system to open when the water level is too high; and controlling the fire extinguishing system to start when the temperature reaches a preset suspected combustion temperature value.

5. A monitoring method for gas pipeline network safety monitoring equipment according to claim 3, characterized in that: The power status fault diagnosis and intelligent processing, the remote terminal unit (RTU) detects its own power supply through the power management module, including the backup battery power, external sealing power input, etc. The remote terminal unit (RTU) switches to the backup battery in time when the power is off or the external power supply voltage is unstable, and the Internet of Things access mode automatically switches to NB-IoT to reduce power consumption and maintain continuous operation, and at the same time triggers the voltage instability / power off alarm, records, displays and uploads the alarm information to the gas network intelligent management platform.

6. A monitoring method for gas pipeline network safety monitoring equipment according to claim 3, characterized in that: The peripheral device status fault diagnosis and intelligent processing, the remote terminal unit (RTU) converts the current signal of the current loop into a voltage signal through a precision resistor through the 250 ohm resistor of the analog acquisition module, and converts the AD into a digital signal and transmits it to the multi-core processor. If the current is continuously lower than 2mA, the instrument fault or disconnection alarm is triggered, and the alarm information is recorded, displayed and uploaded to the gas pipeline network intelligent management platform. The remote terminal unit (RTU) sends a query command to the designated smart meter through the RS485 data interface module. If the designated peripheral device fails to respond after a timeout, it will try again. If it fails to respond again after a timeout, the instrument fault / disconnection alarm is triggered, and the instrument fault / disconnection alarm is recorded, displayed and reported.

7. A monitoring method for gas pipeline network safety monitoring equipment according to claim 3, characterized in that: The IoT communication status fault diagnosis and intelligent processing, the remote terminal unit (RTU) self-checks the network data transmission status, and diagnoses whether the IoT communication status is abnormal. This includes whether the network connection is normal, whether the data transmission rate is stable, etc. When the IoT communication status is abnormal, the remote terminal unit (RTU) attempts to reconnect. If it fails, it switches to the backup IoT communication mode, triggers the network abnormality alarm, records, displays and uploads the alarm information to the gas pipeline network intelligent management platform. After the remote terminal unit (RTU) disconnects the network connection and restores the network connection, the data and alarm information pre-stored in the storage module are re-uploaded to the gas pipeline network intelligent management platform.

8. A monitoring method for gas pipeline network safety monitoring equipment according to claim 3, characterized in that: The gas environment data include but are not limited to: inlet and outlet pressure, temperature, flow, differential pressure, water level, access control signal, combustible gas concentration, leakage alarm signal, shut-off valve closing signal, and solenoid valve status.

Images