Intelligent gas pressure regulating station monitoring system

Abstract

The utility model discloses an intelligent gas pressure regulating station monitoring system, which comprises a wireless data acquisition monitoring terminal, a pressure sensor assembly, a vibration sensor, a flow meter and a combustible gas sensor, and is characterized in that the pressure sensor assembly is used for detecting the pressure of an inlet and an outlet of a pipeline; the vibration sensor is used for detecting the vibration amplitude of the pressure regulator, and the flow meter is used for detecting the flow of a pipeline outlet; the wireless data acquisition monitoring terminal comprises an MCU module, a pressure sampling module, a combustible gas sampling module, a vibration interface module, a flow interface module, a sampling signal multiplexing switching module, a wireless communication module and a battery power supply module. The utility model provides an intelligent gas pressure regulating station monitoring system which can monitor the overall operation state of a pressure regulating station in all directions.

Description

Technical Field

[0001] The utility model relates to an intelligent gas pressure regulating station monitoring system, belonging to the technical field of intelligent monitoring. Background Art

[0002] Gas pressure regulating station is a facility that automatically adjusts and stabilizes the pressure in the pipeline network in the urban gas transmission and distribution system. Gas pressure regulating station can be divided into high and medium pressure regulating station, high and low pressure regulating station, medium and low pressure regulating station, etc. according to the pressure of import and export pipelines; according to the service objects, it can be divided into regional pressure regulating station that supplies a certain range and user pressure regulating station that serves individual buildings or industrial enterprises. In addition to gas pressure regulators, pipelines and their accessories, gas pressure regulating stations are also equipped with measuring instruments, control devices and safety devices. The station is equipped with instruments for measuring gas temperature and pressure. According to needs, some stations are also equipped with gas metering devices, devices for adjusting gas outlet pressure according to given conditions, and telemetry and remote control devices. The pressure regulator is installed in the gas pipeline and can reduce the upstream pressure to a stable downstream pressure. The biggest function of the pressure regulator is to maintain a stable pressure when users use gas.

[0003] Therefore, monitoring, maintaining and troubleshooting the operating status of the gas pressure regulating station are of utmost importance. Existing monitoring equipment for gas pressure regulating stations usually monitors pipeline pressure and flow. For example, the patent "A diagnostic device for a gas pressure regulating station regulator" with authorization announcement number CN210348269U, and the patent "An intelligent monitoring system and monitoring method for a gas pressure regulating station" with authorization announcement number CN115718448A. The former can only monitor and compare the pressure and locate the detection position. Although the latter can collect inlet pressure, outlet pressure, flow, temperature, differential pressure, valve status, leakage alarm, etc. in real time, it lacks monitoring of the working status of the pressure regulator itself. Both of them are not accurate and perfect enough in monitoring the working status of the pressure regulating station. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and to provide an intelligent gas pressure regulating station monitoring system which can comprehensively monitor the overall operating status of the pressure regulating station.

[0005] In order to solve the above technical problems, the technical solution of the utility model is:

[0006] An intelligent gas pressure regulating station monitoring system, comprising a wireless data acquisition monitoring terminal, a pressure sensor assembly, a vibration sensor, a flow meter and a combustible gas sensor, wherein the pressure sensor assembly is used to detect the pressure at the inlet and outlet of the pipeline, the vibration sensor is used to detect the vibration amplitude of the pressure regulator, and the flow meter is used to detect the flow at the outlet of the pipeline;

[0007] The wireless data acquisition monitoring terminal includes an MCU module, a pressure sampling module, a combustible gas sampling module, a vibration interface module, a flow interface module, a sampling signal multiplexing switching module, a wireless communication module and a battery power supply module;

[0008] The pressure sampling module is used to collect the pressure signal sent by the pressure sensor assembly and send the pressure signal to the MCU module;

[0009] The vibration interface module is used to transmit the vibration amplitude signal sent by the vibration sensor to the sampling signal multiplexing switching module, and the flow interface module is used to transmit the flow signal sent by the acquisition flow meter to the sampling signal multiplexing switching module, and the sampling signal multiplexing switching module is connected to the MCU module;

[0010] The combustible gas sampling module is used to collect the leakage signal sent by the combustible gas sensor and send the leakage signal to the MCU module;

[0011] The wireless communication module is used for wireless communication between the MCU module and the host computer;

[0012] The battery power supply module is used to supply power to various modules of the wireless data acquisition and monitoring terminal.

[0013] Furthermore, the pressure sensor assembly includes an inlet pressure sensor and an outlet pressure sensor, wherein the inlet pressure sensor is used to detect the pressure at the pipeline inlet, and the outlet pressure sensor is used to detect the pressure at the pipeline outlet.

[0014] Furthermore, the pressure sampling module includes a 4-20ma current type pressure sampling circuit and an I2C type pressure sampling circuit.

[0015] Furthermore, the inlet pressure sensor and the outlet pressure sensor are both 4-20ma current output type pressure sensors, the 4-20ma current output type pressure sensor is connected to the input end of the 4-20ma current type pressure sampling circuit, and the output end of the 4-20ma current type pressure sampling circuit is connected to the MCU module.

[0016] Furthermore, the inlet pressure sensor and the outlet pressure sensor are both I2C type pressure sensors, the I2C type pressure sensors are connected to the input end of the I2C type pressure sampling circuit, and the output end of the I2C type pressure sampling circuit is connected to the MCU module.

[0017] Furthermore, the vibration interface module is an extended RS485 communication module, and the vibration sensor performs RS485 communication with the MCU module.

[0018] Furthermore, the flow interface module includes an RS485 communication module, an RS422 communication module and an RS232 communication module, and the flow meter performs RS485 communication, RS422 communication or RS232 communication with the MCU module.

[0019] Furthermore, the battery power supply module includes a battery pack and a power supply circuit. The battery pack is connected to the power supply circuit, and the power supply circuit is used to supply power to various modules of the wireless data acquisition and monitoring terminal.

[0020] Furthermore, the wireless data acquisition and monitoring terminal also includes a liquid crystal display and a buzzer. The liquid crystal display is connected to the MCU module, and is used to display the detected working status data. The buzzer is connected to the MCU module, and is used to provide sound reminders when the working status is abnormal.

[0021] Furthermore, the wireless data acquisition and monitoring terminal also includes a motor valve control module, which is connected to the MCU module and is used to control the on and off of the motor valve in the pipeline.

[0022] By adopting the above technical scheme, the utility model monitors the pressure of the pipeline inlet and outlet and the pipeline flow in real time, detects the flow of the pipeline outlet, and detects the vibration amplitude of the pressure regulator through the pressure sensor assembly, vibration sensor, flow meter and combustible gas sensor, finds the working health of the pressure regulator and the state of the emergency shut-off valve when it is in operation, and detects whether there is a gas leak in the pipeline through the combustible gas sensor, thereby monitoring the overall operation status of the pressure regulating station in all directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a principle block diagram of an intelligent gas pressure regulating station monitoring system of the utility model;

[0024] Figure 2 This is a principle block diagram of the wireless data acquisition and monitoring terminal of the utility model;

[0025] Figure 3 This is a circuit schematic diagram of the MCU module of the utility model;

[0026] Figure 4 This is a circuit schematic diagram of the pressure sampling module of the utility model;

[0027] Figure 5 This is a circuit schematic diagram of the vibration interface module of the utility model;

[0028] Figure 6 This is a circuit schematic diagram of the flow interface module of the utility model;

[0029] Figure 7This is a circuit schematic diagram of the motor valve control module of the utility model;

[0030] Figure 8 This is a circuit schematic diagram of the battery power supply module of the utility model;

[0031] Fig. 9 This is a circuit schematic diagram of the sampling signal multiplexing switching module of the utility model. DETAILED DESCRIPTION

[0032] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0033] like Figure 1 As shown, this embodiment provides an intelligent gas pressure regulating station monitoring system, which includes a wireless data acquisition monitoring terminal, a pressure sensor assembly, a vibration sensor, a flow meter and a combustible gas sensor. The pressure sensor assembly is used to detect the pressure at the pipeline inlet and outlet, the vibration sensor is used to detect the vibration amplitude of the pressure regulator, the flow meter is used to detect the flow at the pipeline outlet, and the combustible gas sensor is used to detect whether there is a gas leak in the pipeline.

[0034] like Figure 2 As shown, the wireless data acquisition and monitoring terminal of this embodiment includes an MCU module, a pressure sampling module, a combustible gas sampling module, a vibration interface module, a flow interface module, a sampling signal multiplexing switching module, a wireless communication module and a battery power supply module.

[0035] The pressure sampling module is used to collect the pressure signal sent by the pressure sensor component and send the pressure signal to the MCU module.

[0036] The vibration interface module is used to transmit the vibration amplitude signal sent by the vibration sensor to the sampling signal multiplexing switching module, and the flow interface module is used to transmit the flow signal sent by the collection flow meter to the sampling signal multiplexing switching module. The sampling signal multiplexing switching module is connected to the MCU module. Figure 1 , 9 As shown, the signals collected by the vibration sensor and the flow meter are first aggregated to the sampling signal multiplexing switching module, and then sent to the MCU module by the sampling signal multiplexing switching module, which can reduce the use of the MCU module IO pins and save hardware resources.

[0037] The combustible gas sampling module is used to collect the leakage signal sent by the combustible gas sensor and send the leakage signal to the MCU module.

[0038] The wireless communication module is used for wireless communication between the MCU module and the host computer. The wireless communication module of this embodiment adopts a 4G wireless communication module. The wireless data acquisition and monitoring terminal uploads monitoring data to the host computer through 4G and receives control commands from the host computer.

[0039] The battery power supply module is used to power various modules of the wireless data acquisition and monitoring terminal.

[0040] like Figure 3 As shown, the MCU module of this embodiment adopts MCU chip IC1, model STM32L151VD.

[0041] like Figure 1 As shown, the pressure sensor assembly of this embodiment includes an inlet pressure sensor and an outlet pressure sensor. The inlet pressure sensor is used to detect the pressure of the pipeline inlet, and the outlet pressure sensor is used to detect the pressure of the pipeline outlet. The pressure sampling module includes a 4-20ma current type pressure sampling circuit and an I2C type pressure sampling circuit, such as Figure 4 As shown, the 4-20ma current type pressure sampling circuit adopts the precision instrument amplifier U14, model INA826, and the I2C type pressure sampling circuit adopts the I2C interface circuit.

[0042] Among them, the pressure sensor used in this embodiment can be a 4~20ma current output type pressure sensor or an I2C type pressure sensor. When using a 4~20ma current output type pressure sensor, the pressure sensor is connected to a 4~20ma current type pressure sampling circuit, and the 4~20ma current type pressure sampling circuit sends the pressure signal to the MCU module (the combustible gas sampling module uses the same sampling circuit). When using an I2C type pressure sensor, the I2C type pressure sensor is connected to an I2C type pressure sampling circuit, and the I2C type pressure sampling circuit sends the pressure signal to the MCU module. Setting two different types of pressure sampling circuits can adapt to the mainstream pressure sensors on the market, and the application is more extensive and flexible.

[0043] like Figure 5 As shown, the vibration interface module of this embodiment is an extended RS485 communication module, and the vibration sensor communicates with the MCU module via RS485. The vibration sensor detects the vibration amplitude of the voltage regulator. There are several situations in which the vibration of the voltage regulator exceeds the range: 1. The vibration exceeds the range, and the flow rate in the pipeline is too low, indicating that the vibration is caused by too small gas consumption. 2. The vibration exceeds the range, and the flow rate in the pipeline fluctuates frequently, indicating that the gas consumption is unstable. 3. The vibration exceeds the range, and the outlet pressure is frequently passive, indicating that the downstream pipe capacity is too small to meet the customer's gas consumption.

[0044] like Figure 6As shown, the flow interface module of this embodiment includes an RS485 communication module, an RS422 communication module and an RS232 communication module, and the flow meter and the MCU module perform RS485 communication, RS422 communication or RS232 communication. The RS485 communication module and the RS422 communication module use the RS-485 / RS-422 communication chip SN65HVD75DR, and the RS232 communication module uses the RS-232 chip SP3232EEY.

[0045] like Figure 8 As shown, the battery power supply module of this embodiment includes a battery pack and a power supply circuit, the battery pack is connected to the power supply circuit, and the power supply circuit is used to power each module of the wireless data acquisition monitoring terminal. The power supply circuit includes anti-reverse diodes D2 and D3, power management chip TPS62745, inductor L1, voltage regulator tubes DW5 and DW6, etc., which output DC 6V and 3.3V power supplies to power each module respectively. The MCU module can monitor the battery voltage, and the battery voltage acquisition circuit is composed of MOS tubes Q1 and Q2, resistors, inductors, etc.

[0046] like Figure 3 As shown, the wireless data acquisition and monitoring terminal of this embodiment also includes a liquid crystal display and a buzzer. The liquid crystal display is connected to the MCU module, and the liquid crystal display is used to display the detected working status data. The buzzer is connected to the MCU module, and the buzzer is used to provide sound reminders when the working status is abnormal. Figure 1 B1 is a buzzer. Figure 1 LCD1 is the liquid crystal display.

[0047] like Figure 1 , 7 As shown, the wireless data acquisition and monitoring terminal of this embodiment also includes a motor valve control module, which is connected to the MCU module and is used to control the on and off of the motor valve in the pipeline.

[0048] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are 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 intelligent gas pressure regulating station monitoring system, characterized in that: It includes a wireless data acquisition monitoring terminal, a pressure sensor assembly, a vibration sensor, a flow meter and a combustible gas sensor. The pressure sensor assembly is used to detect the pressure at the inlet and outlet of the pipeline, the vibration sensor is used to detect the vibration amplitude of the pressure regulator, and the flow meter is used to detect the flow at the outlet of the pipeline. The wireless data acquisition monitoring terminal includes an MCU module, a pressure sampling module, a combustible gas sampling module, a vibration interface module, a flow interface module, a sampling signal multiplexing switching module, a wireless communication module and a battery power supply module; The pressure sampling module is used to collect the pressure signal sent by the pressure sensor assembly and send the pressure signal to the MCU module; The vibration interface module is used to transmit the vibration amplitude signal sent by the vibration sensor to the sampling signal multiplexing switching module, and the flow interface module is used to transmit the flow signal sent by the acquisition flow meter to the sampling signal multiplexing switching module, and the sampling signal multiplexing switching module is connected to the MCU module; The combustible gas sampling module is used to collect the leakage signal sent by the combustible gas sensor and send the leakage signal to the MCU module; The wireless communication module is used for wireless communication between the MCU module and the host computer; The battery power supply module is used to supply power to various modules of the wireless data acquisition and monitoring terminal.

2. The intelligent gas pressure regulating station monitoring system according to claim 1 is characterized in that: The pressure sensor assembly comprises an inlet pressure sensor and an outlet pressure sensor, wherein the inlet pressure sensor is used to detect the pressure of the pipeline inlet, and the outlet pressure sensor is used to detect the pressure of the pipeline outlet.

3. The intelligent gas pressure regulating station monitoring system according to claim 2 is characterized in that: The pressure sampling module includes a 4-20ma current type pressure sampling circuit and an I2C type pressure sampling circuit.

4. The intelligent gas pressure regulating station monitoring system according to claim 3 is characterized in that: The inlet pressure sensor and the outlet pressure sensor are both 4-20ma current output type pressure sensors, the 4-20ma current output type pressure sensor is connected to the input end of the 4-20ma current type pressure sampling circuit, and the output end of the 4-20ma current type pressure sampling circuit is connected to the MCU module.

5. The intelligent gas pressure regulating station monitoring system according to claim 3 is characterized in that: The inlet pressure sensor and the outlet pressure sensor are both I2C type pressure sensors, the I2C type pressure sensors are connected to the input end of the I2C type pressure sampling circuit, and the output end of the I2C type pressure sampling circuit is connected to the MCU module.

6. The intelligent gas pressure regulating station monitoring system according to claim 1 is characterized in that: The vibration interface module is an extended RS485 communication module, and the vibration sensor communicates with the MCU module via RS485.

7. The intelligent gas pressure regulating station monitoring system according to claim 1 is characterized in that: The flow interface module includes an RS485 communication module, an RS422 communication module and an RS232 communication module, and the flow meter performs RS485 communication, RS422 communication or RS232 communication with the MCU module.

8. The intelligent gas pressure regulating station monitoring system according to claim 1, characterized in that: The battery power supply module comprises a battery pack and a power supply circuit. The battery pack is connected to the power supply circuit. The power supply circuit is used to supply power to various modules of the wireless data acquisition and monitoring terminal.

9. The intelligent gas pressure regulating station monitoring system according to claim 1, characterized in that: The wireless data acquisition monitoring terminal also includes a liquid crystal display and a buzzer. The liquid crystal display is connected to the MCU module and is used to display the detected working status data. The buzzer is connected to the MCU module and is used to provide a sound reminder when the working status is abnormal.

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