CN114623390A - A system and method for on-line monitoring of gas leakage in petroleum and petrochemical pipelines - Google Patents

Abstract

The invention discloses a system and a method for on-line monitoring of gas leakage of a petroleum and petrochemical pipeline, which comprises a detection module, a wireless communication module, a power supply module, a central data processing module and an alarm module, wherein the detection module comprises a combustible gas concentration sensor, a temperature sensor and a pressure sensor, the combustible gas concentration sensor is used for monitoring the gas concentration at the pipeline connection position on an oil-gas pipeline in real time, the temperature sensor is used for monitoring the ambient temperature change condition of the pipeline, and the pressure sensor is used for monitoring the gas pressure change condition in the pipeline. According to the invention, the monitoring module is arranged to monitor the state of the pipeline in real time, and real-time data is sent to the central processing module, so that if an abnormal condition occurs, early warning is timely carried out, a worker is reminded to timely handle the abnormal condition of the pipeline, the potential safety hazard is eliminated, and the transmission safety of the oil-gas pipeline is ensured through intelligent communication.

Description

A system and method for on-line monitoring of gas leakage in petroleum and petrochemical pipelines

technical field

The invention belongs to the field of safety monitoring, and in particular relates to a system and method for on-line monitoring of gas leakage of petroleum and petrochemical pipelines.

Background technique

With the rapid development of the national economy and transportation industry, more and more oil products are transported by road, and the security problems that follow are increasingly prominent. Due to the complicated situation of the leakage accident of combustible gas vehicles, and the high risk of the disposal process, serious accidents such as combustion and explosion are prone to occur, which poses a serious threat to the lives, property and ecological environment of the people, and there are many hidden dangers. These hidden dangers are just like Like some chronic diseases, it is usually too late when something really happens. Therefore, we make improvements to this, and propose a system and method for on-line monitoring of gas leakage in petroleum and petrochemical pipelines.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the above problems existing in the prior art, and to provide a system and method for on-line monitoring of gas leakage in petroleum and petrochemical pipelines, by setting a monitoring module to monitor the pipeline state in real time, and sending the real-time data to the center for processing The module, if there is an abnormal situation, will give an early warning in time, remind the staff to deal with the abnormal situation of the pipeline in time, eliminate potential safety hazards, and ensure the safety of oil and gas pipeline transmission through intelligent communication.

In order to realize the above-mentioned technical purpose and achieve the above-mentioned technical effect, the present invention is realized through the following technical solutions:

A system and method for on-line monitoring of gas leakage in petroleum and petrochemical pipelines, comprising a detection module, a wireless communication module, a power supply module, a central data processing module, and an alarm module;

The detection module includes a combustible gas concentration sensor, a temperature sensor, and a pressure sensor. The combustible gas concentration sensor is used for real-time monitoring of the gas concentration at the pipeline connection on the oil and gas pipeline, and the temperature sensor is used to monitor the temperature change around the pipeline. To monitor the change of gas pressure in the pipeline;

The wireless communication module is used for sending the real-time data of the detection module to the central data processing module;

The central data processing module is used to receive the real-time data sent by the wireless communication module, and by comparing the data, calculate the change amount to determine whether the gas leaks, and calculate the specific leak location, and if a leak occurs, it is sent to the alarm module through the wireless communication module;

The alarm module is used to send an alarm instruction to the relevant emergency treatment department, and simultaneously issue an alarm sound and light to warn the leakage of combustible gas.

Further, the central data processing module senses the gas pressure at different positions through the pressure sensor, calculates the flow velocity of each position in the monitoring pipeline, determines the adjacent fastest flow velocity according to the flow velocity, and determines the phase in the corresponding monitoring pipeline according to the adjacent fastest flow velocity. Adjacent locations, determine the location of the flammable gas leakage according to the adjacent locations.

Further, the power supply module is powered by solar energy, the photoelectric efficiency of the solar power supply system is greater than 16%, the battery of the solar power supply module is a lithium battery, the battery is equipped with an output controller with a signal, and the charging voltage of the solar panel and the battery are connected through the wireless communication module. The output voltage and power are sent to the central data processing module.

An online monitoring method for gas leakage of oil and gas pipelines:

A. The combustible gas concentration sensor of the detection module monitors the gas concentration at the pipeline connection on the oil and gas pipeline in real time, the temperature sensor is used to monitor the temperature change around the pipeline, the pressure sensor is used to monitor the gas pressure change in the pipeline, and the wireless communication module It is used to send the real-time data of the detection module to the central data processing module;

B. The central data processing module receives the real-time data sent by the wireless communication module, and by comparing the data, calculates the amount of change to determine whether the gas leaks, and calculates the specific leak location. If a leak occurs, it is sent to the alarm module through the wireless communication module;

C. The alarm module is used to send an alarm command to the relevant emergency treatment department, and at the same time, an alarm sound and light are issued to warn of the leakage of combustible gas.

The beneficial effects of the invention are as follows: the gas leakage online monitoring system and method of the oil and gas pipeline can monitor the pipeline state in real time by setting the monitoring module, and send the real-time data to the central processing module. The staff promptly handles the abnormal situation of the pipeline, eliminates potential safety hazards, and ensures the safety of oil and gas pipeline transmission through intelligent communication.

Description of drawings

The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

Fig. 1 is the flow chart of the present invention;

Figure 2 is a partial flow chart of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

A system and method for on-line monitoring of gas leakage in petroleum and petrochemical pipelines, as shown in FIG. 1 , includes a detection module, a wireless communication module, a power supply module, a central data processing module, and an alarm module;

The detection module includes a combustible gas concentration sensor, a temperature sensor, and a pressure sensor. The combustible gas concentration sensor is used to monitor the gas concentration at the pipeline connection on the oil and gas pipeline in real time. The temperature sensor is used to monitor the temperature changes around the pipeline, and the pressure sensor is used to monitor Changes in gas pressure in the pipeline;

The wireless communication module is used to send the real-time data of the detection module to the central data processing module;

The central data processing module is used to receive the real-time data sent by the wireless communication module, and by comparing the data, calculate the amount of change to determine whether the gas leaks, and calculate the specific leak location. If a leak occurs, it will be sent to the alarm module through the wireless communication module;

The power supply module adopts solar power, and the photoelectric efficiency of the solar power supply system is greater than 16%. The battery of the solar power supply module adopts lithium battery. Send to the central data processing module;

The alarm module is used to send an alarm command to the relevant emergency treatment department, and at the same time emit an alarm sound and light to warn the leakage of combustible gas;

The charging voltage of the solar panel, the output voltage of the battery, the power and other information are transmitted to the remote server through the wireless communication module and 4G signal to realize remote real-time monitoring. Once the detection result exceeds the warning value, the system will automatically alarm on-site and remotely, and send a short message to the remote server. , sound and light or emails are automatically sent to the relevant personnel. At the same time, the system administrator can perform remote control, parameter setting and other operations on the system.

1. Combustible gas detector

Detection gas: flammable gas (including methane, hydrogen sulfide)

Detection principle: infrared

Form: Fixed

Sampling method: natural diffusion

Working voltage: DC24V±6V

Accuracy: <±3%F.S

Point drift: ≤2%/year

Response time: 0＜30s

Detection range: 0-100% LEL

Operation mode: infrared remote control

Environmental conditions: Temperature: -20℃～70℃ (poisonous gas) Humidity: ≤95%RH without condensation

Power consumption: ≤3W

Protection class: IP66

Explosion-proof grade: Exd IIC T6

Output signal: digital RS485

Self-diagnosis: required

Local indication: required (8-digit LED display)

Status indication: yellow LED indicates fault, red indicates concentration alarm, green indicates normal operation

Ambient pressure: 86kPa～106kPa

Electrical interface: NPT3/4

Material: Epoxy Coated Aluminum

Wind and rain cover: required

Sound and light alarm: built-in sound and light alarm; sound intensity: 100dB@10cm, light intensity: ≥2cd@10cm.

2. Wireless communication module

Working voltage: DC24V

Wireless communication standard: 4G/5G NB-lot

Minimum communication time interval: ≤2S

Protection class: IP66

External communication interface: RS485

Environmental conditions: Temperature: -20℃～70℃ Humidity: ≤95%RH without condensation

Power consumption: ≤2W

Explosion-proof grade: Exd IIC T6

Executive standard: Q/HKJ038-2019

3. Data acquisition workstation

Processor: CORE i7 9th generation

Memory: 16G

Hard disk: 500G SSD

Operating system: Windows 10 64-bit Professional Edition

Display: 24-inch LCD display

Other: keyboard and mouse

Network card: 100M/1000M adaptive × 2

4. Solar power supply system

The solar panel of the solar power supply system is of monocrystalline silicon type, and the photoelectric efficiency is required to be ≥16%, and the structural material of the solar panel bracket is made of steel. The protection level of the bus/flow box of the solar panel is not lower than IP 65.

The battery of the solar power supply module adopts lithium battery, and the battery is equipped with a protective box, and the protection level of the protective box is not lower than IP 65.

The battery is equipped with an output controller with a signal, and the charging voltage of the solar panel, the output voltage of the battery, and the amount of electricity can be seen in the monitoring software.

5. Software requirements for combustible gas monitoring system

The combustible gas detection system monitors the on-site combustible gas concentration parameters in real time, automatically gives an early warning when the limit is exceeded, and promptly informs the relevant responsible persons to take measures. The data acquisition workstation receives the monitoring data of each detector through the customized PC-side monitoring software, and completes data analysis, alarm judgment and related processing.

The mobile APP software can be customized according to the on-site use environment and needs of Party A. The basic functions include data query, fault query, alarm query, historical data statistics, alarm and fault reminder (can be masked), data monitoring, account authority management, etc.

At the same time, the functions of the software system include:

1) Comprehensive monitoring

Through the GIS map image, the entire scene can be displayed intuitively, and the actual location information of the detection equipment is displayed on the map. At the same time, the real-time data, network status and alarm information of each detection equipment returned by the collector are received and displayed, and the equipment can be automatically and intelligently judged. Status, alarm level, and notify and remind users through various alarm effects such as screen shaking, light emission, and sound.

2) Real-time curve monitoring On the basis of comprehensive monitoring, based on the method of curve monitoring + list monitoring, it provides continuous curve display of all detector monitoring data, which is convenient for staff to comprehensively analyze detector status and on-site conditions.

3) Intelligent monitoring of equipment status

The system can monitor the working status of "monitoring and monitoring equipment" in real time. When the equipment fails or an alarm occurs, it can be monitored in the system in real time. The system can monitor the high report, low report, communication failure, network failure, communication timeout and disconnection of the device. , preheating, calibration and other states, providing a reliable basis for fault cause diagnosis and investigation.

4) Intelligent classification early warning and police handling

The system can intelligently identify the alarm according to the national standard preset threshold (which can also be set independently), and notify the relevant person in charge by shaking the screen, flashing, sound and light, etc. according to the alarm level. After receiving the alarm information, the relevant person in charge can process the alarm situation to ensure the closed-loop operation of the alarm processing and effectively predict and prevent the occurrence of security accidents.

The system supports querying of alarm records and alarm processing records through multi-condition and multi-dimensional combinations such as alarm time, installation area, and probe group.

5) Historical record query analysis

Provides comprehensive query of real historical alarm information of equipment according to various combination conditions. At the same time, the system provides two display modes: "curve mode" and "list mode". The query results can also be exported for separate data analysis.

Alarm analysis of the situation, the prediction of potential safety hazards and failures.

6) Device management

Manage and maintain information such as gas detection detectors, communication links, etc., so that the system can obtain equipment information for data collection.

As shown in Figure 2, the central data processing module senses the gas pressure at different positions through the pressure sensor, calculates the flow velocity at each position in the monitoring pipeline, determines the adjacent fastest flow velocity according to the flow velocity, and determines the corresponding monitoring pipeline according to the adjacent fastest flow velocity. Adjacent positions, determine the flammable gas leakage position according to the adjacent positions.

An online monitoring method for gas leakage of oil and gas pipelines:

A. The combustible gas concentration sensor of the detection module monitors the gas concentration at the pipeline connection on the oil and gas pipeline in real time, the temperature sensor is used to monitor the temperature change around the pipeline, the pressure sensor is used to monitor the gas pressure change in the pipeline, and the wireless communication module It is used to send the real-time data of the detection module to the central data processing module;

B. The central data processing module receives the real-time data sent by the wireless communication module, and by comparing the data, calculates the amount of change to determine whether the gas leaks, and calculates the specific leak location. If a leak occurs, it is sent to the alarm module through the wireless communication module;

C. The alarm module is used to send an alarm command to the relevant emergency treatment department, and at the same time, an alarm sound and light are issued to warn of the leakage of combustible gas.

The beneficial effects of the invention are as follows: the gas leakage online monitoring system and method of the oil and gas pipeline can monitor the pipeline state in real time by setting the monitoring module, and send the real-time data to the central processing module. The staff promptly handles the abnormal situation of the pipeline, eliminates potential safety hazards, and ensures the safety of oil and gas pipeline transmission through intelligent communication.

In the description of this specification, description with reference to the terms "one embodiment," "example," "specific example," etc. means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one aspect of the present invention. in one embodiment or example. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and the descriptions in the above-mentioned embodiments and the description are only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have Various changes and modifications fall within the scope of the claimed invention.

Claims (4)

1. a system for on-line monitoring of gas leakage of petroleum and petrochemical pipelines, is characterized in that, comprises detection module, wireless communication module, power supply module, central data processing module, alarm module; The detection module includes a combustible gas concentration sensor, a temperature sensor, and a pressure sensor. The combustible gas concentration sensor is used for real-time monitoring of the gas concentration at the pipeline connection on the oil and gas pipeline, and the temperature sensor is used to monitor the temperature change around the pipeline. To monitor the change of gas pressure in the pipeline; The wireless communication module is used for sending the real-time data of the detection module to the central data processing module; The central data processing module is used to receive the real-time data sent by the wireless communication module, and by comparing the data, calculate the change amount to determine whether the gas leaks, and calculate the specific leak location, and if a leak occurs, it is sent to the alarm module through the wireless communication module; The alarm module is used to send an alarm instruction to the relevant emergency treatment department, and simultaneously issue an alarm sound and light to warn the leakage of combustible gas. 2. A system for on-line monitoring of gas leakage in petroleum and petrochemical pipelines according to claim 1, wherein the central data processing module senses gas pressures at different positions through a pressure sensor, and calculates the gas pressure of each position in the monitoring pipeline. Flow velocity, determine the adjacent fastest flow velocity according to the flow velocity, determine the adjacent position in the corresponding monitoring pipeline according to the adjacent fastest flow velocity, and determine the flammable gas leakage position according to the adjacent position. 3. A system for on-line monitoring of gas leakage of petroleum and petrochemical pipelines according to claim 1, wherein the power supply module adopts solar power supply, the battery of the solar power supply module adopts a lithium battery, and the battery is installed with an output with a signal The controller sends the charging voltage of the solar panel, the output voltage and the power of the battery to the central data processing module through the wireless communication module. 4. a kind of on-line monitoring method for petroleum and petrochemical pipeline gas leakage according to claim 1, is characterized in that, described method comprises the following steps: A. The combustible gas concentration sensor of the detection module monitors the gas concentration at the pipeline connection on the oil and gas pipeline in real time, the temperature sensor is used to monitor the temperature change around the pipeline, the pressure sensor is used to monitor the gas pressure change in the pipeline, and the wireless communication module It is used to send the real-time data of the detection module to the central data processing module; B. The central data processing module receives the real-time data sent by the wireless communication module, and by comparing the data, calculates the amount of change to determine whether the gas leaks, and calculates the specific leak location. If a leak occurs, it is sent to the alarm module through the wireless communication module; C. The alarm module is used to send an alarm command to the relevant emergency treatment department, and at the same time, an alarm sound and light are issued to warn of the leakage of combustible gas.

Images