(1) Distributed optical fiber pipeline anti-theft leak detection device for oil and gas pipelines (anti-excavation and leakage);

· Application background

As an important means of energy transportation, oil and gas pipelines have many advantages such as continuous transportation, high efficiency, large transportation volume, and low cost. They are the fastest, safe, and economically reliable transportation method for continuously transporting large amounts of oil, and have become related to the development of the energy industry. Important link.

The investment in pipeline facilities is huge, and there is a certain degree of concealment in space. There may be unsubjective and deliberate man-made damage, and the leakage of flammable and explosive substances will bring great safety risks. In recent years, oil theft by punching has been repeated. Occurred, causing huge economic losses and environmental pollution. Construction excavation and geological disasters can also cause pipeline rupture. Oil and gas pipeline leakage accidents continue to occur, resulting in very large economic losses, which may cause combustion and explosion, or cause large areas The leakage of hazardous and toxic substances pollutes the environment, causing casualties.

System Components:

1. The integrated online monitoring system for oil and gas pipelines uses a distributed optical fiber pipeline anti-theft monitoring system and a distributed optical fiber pipeline leakage detection system.

2. Use two of the redundant communication optical cables in the oil and gas pipeline, one for the vibration system and the other for the temperature measurement system to monitor the temperature distribution and vibration distribution of the oil and gas pipeline respectively.

3. The temperature measurement system and the vibration system are connected to the data server via Ethernet for comprehensive analysis and processing and early warning and alarm.

System functions:

1. Use a distributed optical fiber temperature leakage monitoring system to monitor the temperature distribution of oil and gas pipelines in real time. When an oil and gas pipeline leaks, the system can sense the nearby temperature changes and give an alarm.

2. A distributed optical fiber vibration monitoring system is used to monitor the pipeline environment status in real time to prevent pipeline rupture and leakage caused by man-made construction.

3. Unattended security monitoring can be realized, and project goals can be monitored through remote desktop display and SMS alarm.

4. It can be linked with other equipment, such as sound and light alarm, video camera, etc.

(2) Distributed optical fiber pipeline anti-theft monitoring system for oil and gas pipelines (anti-excavation);

Oil and natural gas transportation is closely related to the national economy and people's lives. Compared with road transportation, pipeline transportation has the characteristics of safety, convenience and economy, and has become an important link related to the development of the energy industry. Long-distance oil and gas pipelines are characterized by high temperature, high pressure, flammability, and explosion. Once they leak, they will cause major safety accidents and cause huge economic losses. In recent years, some sabotage acts such as oil theft and brutal construction have seriously threatened the safety of pipelines.

Application background

Oil and natural gas transportation is closely related to the national economy and people's lives. Compared with road transportation, pipeline transportation has the characteristics of safety, convenience and economy, and has become an important link related to the development of the energy industry. Long-distance oil and gas pipelines are characterized by high temperature, high pressure, flammability, and explosion. Once they leak, they will cause major safety accidents and cause huge economic losses. In recent years, some sabotage acts such as oil theft and brutal construction have seriously threatened the safety of pipelines. Pipeline failure accidents due to external disturbance, corrosion, pipe material and construction quality, etc., threaten the national economy and the safety of people’s lives and properties.

The distributed optical fiber vibration monitoring system has become the focus of research because of its high sensitivity, unlimited detection points, and convenient installation and maintenance.

Project system schematic diagram

System functions

1) Real-time monitoring of pipeline environmental status to prevent pipeline rupture and leakage caused by man-made construction. When the optical fiber is touched, vibrated, or squeezed from outside, it will cause morphological interference and change the phase of the optical signal. The system software receiver detects the phase change, can detect the intensity and type of interference, process the detected signal, determine whether the interference meets the conditions for triggering the "event", and accurately locate the interference object, thereby preventing the oil and gas pipeline Early warning of external threats of destruction.

2) Unattended security monitoring can be realized, and project goals can be monitored through remote desktop display and SMS alarm.

3) It can be linked with other equipment, such as sound and light alarm, video camera, etc.

HY-ZD100 distributed optical fiber vibration system

Working principle of vibration system

The optical fiber vibration monitoring system is based on the phenomenon of light interference.

It uses the ordinary communication optical cable itself as the sensing device, which can detect the vibration of an optical fiber that is tens of dry meters long. The spatial sampling interval is only 1M, and the detection period of 50 kilometers is less than 1 second.

When an optical fiber is disturbed by the outside world, the parameters of the optical interference phenomenon will change. Through high-speed signal acquisition and data processing technology, the line can be monitored and accurately positioned through the rapid induction of optical cable touch, squeeze, and vibration. The location of the disturbance is analyzed and the normal use can be guaranteed without being affected by the external climate and harsh environment.

The path of the normal state of the light transmitted in the optical fiber and the propagation mode of the interfered state are as follows:

When the optical fiber is touched, vibrated, or squeezed from outside, it will cause morphological interference and change the phase of the optical signal. The system software receiver detects the phase change, can detect the intensity and type of interference, and process the detected signal, determine whether the interference meets the conditions for triggering the "event", and accurately locate the interference object, so that the possible pairing can be formed. Early warning of external threats such as construction, excavation, and theft of damage to lines (or close cables, pipes laid in the same ditch, etc.).

Product Description

The vibration monitoring system combines the principle of optical fiber interference and distributed sensing theory, and the environmental stress of the light pair in the optical fiber (painting) placed in the fortified area touches or passes through the load (such as power cable, soil, communication optical cable, etc.) Induction and analysis, the disturbance signal is transmitted to the system host, after signal extraction, waveform analysis and intelligent behavior discrimination, different types of disturbances are judged, such as mechanical operation above the optical cable, manual operation, contact cable damage, etc., to achieve system early warning And alarms, and can be linked with video, sound and light and other equipment to truly realize all-round, 24-hour all-round intrusion benefit control.

This system adopts today's advanced photoelectric technology, communication technology, microprocessor technology, digital vibration sensing technology and original design of low temperature, strong electric field, and humid environment operation technology. It can monitor the general situation of the pipeline in real time, find the general situation of the pipeline environment as soon as possible, prevent the pipeline from leaking due to external force damage, and minimize the loss. At the same time, it can also provide a large amount of online monitoring data to provide a reliable basis for operators to fully understand the operation of the pipeline.

Feature

1) Long measuring distance: the detection distance can reach 50km, and the intrusion point can be accurately located;

2) Continuous distributed measurement, which can realize simultaneous monitoring of multiple points and multiple events without affecting each other;

3) High flexibility (alarm threshold 0-99 level). High accuracy (±5 meters);

4) Rich pattern recognition can accurately determine intrusion events;

5) Excellent electromagnetic insulation, free from electromagnetic interference, and essential lightning protection;

6) Intrinsically safe and reliable, the optical fiber will not produce electric sparks at all, and the average power of the laser pulse is very low;

7) Simple construction and convenient maintenance;

8) The additional loss tolerance is high, and it can work normally even if there is an additional loss of 50%;

9) Intelligent monitoring, easy to realize unattended.

Application

Excavation and theft of oil and gas pipelines. Vibration monitoring such as damage

Vibration monitoring of power cable excavation, theft, damage, etc.

Technical parameter

(3) Distributed optical fiber pipeline leak detection and monitoring system for oil and gas pipelines (anti-leakage);

Oil and gas pipeline leaks will not only cause major economic losses and serious environmental pollution, but also pose a huge threat to people's lives and property. Therefore, real-time online monitoring of oil and gas pipeline leaks, timely detection of leaks and prediction of hidden dangers are very important. Existing pipeline safety monitoring methods can only passively monitor the leakage point after a leakage accident occurs, and losses cannot be avoided.

Application background

Oil and gas pipeline leaks will not only cause major economic losses and serious environmental pollution, but also pose a huge threat to people's lives and property. Therefore, real-time online monitoring of oil and gas pipeline leaks, timely detection of leaks and prediction of hidden dangers are very important. Existing pipeline safety monitoring methods can only passively monitor the leakage point after a leakage accident occurs, and losses cannot be avoided. For example:

1) Generally, only oil pressure, flow rate and other indicators are monitored, which is an indirect detection;

2) The monitoring sensitivity of oil pressure, flow rate, etc. is limited, which makes it difficult to find tiny oil leaks and low detection sensitivity;

3) It is difficult to accurately locate the specific geographic location of the leaking point by adopting more point detection technology;

4) In terms of long-distance detection, information transmission is difficult, and additional information communication needs to be constructed;

5) Due to the insufficient positioning accuracy of the leakage point, it is difficult to conduct unified management with the positioning information of the repair personnel.

Therefore, realizing early warning of sabotage that threatens pipeline safety will have great social and economic benefits.

Project system schematic diagram

System functions

A distributed optical fiber temperature leak detection system is used to monitor the temperature distribution of oil and gas pipeline lines in real time, especially the location temperature of the pipeline welding point; when the oil and gas pipeline leaks, the system can sense nearby temperature changes and give an alarm.

The system uses optical signals from the temperature detectors to the monitoring center for temperature measurement and model transmission to realize non-electric detection, intrinsically safe and explosion-proof; the management module can also display the position and temperature information of each detector in real time, and users can use this interface Intuitively understand the safety of the equipment.

HY-DTS5100 distributed optical fiber temperature measurement system

Working principle of temperature measurement system

The DTS optical fiber temperature sensor is equivalent to installing a thermometer every one meter on the fiber of each channel. A channel of 10 kilometers is equivalent to 25,000 thermometers. The host collects these temperatures, performs centralized calculation, storage and processing.

The mechanism of optical fiber temperature measurement is based on the Raman scattering effect. The laser pulse interacts with the fiber molecules and scatters. There are many kinds of scattering. Among them, Raman scattering is due to the thermal vibration of the fiber molecules. It will produce a light with a longer wavelength than the light source, called Stokes light, and A light with a shorter wavelength than the light source is called Anti-Stokes light. The optical fiber is modulated by the external temperature to change the anti-Stokes light intensity in the optical fiber. This principle can be used to realize the distributed measurement of the temperature field along the optical fiber.

Product Description

Distributed optical fiber temperature sensor is abbreviated as DTS (Distributed temperature Sensor). The distributed optical fiber temperature sensor can detect the temperature distribution of an optical fiber that is several kilometers to tens of kilometers long. The spatial sampling interval is only 0.4m, and the detection period is only 0.4m. Up to seconds. The optical fiber itself is made of quartz and has excellent electromagnetic inertness. Therefore, DTS is an unprecedented "super temperature sensor", which is rapidly being used in fire detection, electricity, petroleum and petrochemical fields.

This product system adopts today's advanced photoelectric technology, communication technology, microprocessor technology, digital temperature sensing technology and original design of low temperature, strong electric field, and humid environment operation technology. It can separately monitor the temperature in different environments, discover potential accidents as early as possible, and minimize losses. At the same time, it can also provide a large amount of online monitoring data to provide a reliable basis for operators to fully understand the operation of the equipment.

Feature

1) Use distributed optical fiber temperature sensing equipment to sense temperature and location information for signal detection and signal transmission, to achieve non-electric detection, intrinsically safe and explosion-proof;

2) Use advanced distributed optical fiber temperature sensor as the measuring unit. Advanced technology, high measurement accuracy;

3) Distributed temperature sensing optical cable has a temperature measurement range of -150℃ to 150℃, up to 350℃, and a wide range of applications;

4) The single-loop measurement method of the detector is adopted, which is simple to install and low in cost; redundant spare cores can be reserved;

5) Real-time display of the temperature of each zone, and can display historical data, change curves, and average temperature changes;

6) The system has compact structure, simple installation and convenient maintenance;

7) Through the software, different early warning values and alarm values can be set according to the actual situation; the alarm methods are diversified, including constant temperature alarm, temperature rise rate alarm, and temperature difference alarm.

8) Data query through software: point-by-point query, alarm record query, interval query, historical data query, accounting report printing.

Application

Leakage temperature monitoring of oil and natural gas pipelines

Online temperature monitoring of power cables and cable tunnels

Temperature monitoring of oil depots, munitions depots, dangerous goods depots, grain depots, cold storages and other warehouses

Temperature monitoring in the field of transportation

Technical parameter

(4) Optical fiber perimeter security system in important places such as oil storage depots (anti-overturning, crossing, intrusion and destruction)

At present, the application of security products in the entire industrial chain of the energy industry has been extensive. In addition to the requirements of safe production in terms of its own production technology and employee training, the petrochemical industry is also used in oil fields, large chemical plants, drilling platforms, and chemical product storage warehouses. , Natural gas pipelines, etc., all require real-time monitoring of their production environment by security products.

Application background

From the perspective of my country’s current energy structure, oil and natural gas will continue to be the main energy supply for a long period of time in the future. Therefore, whether the process of oil and natural gas extraction, processing, transportation, and use can be safe and stable for a long time will be related to the national economy. The development is a major issue, and human management and supervision alone cannot achieve the desired results. It needs to rely on scientific and technological power to monitor all aspects from early warning to prevention. Therefore, in the infrastructure construction of the petrochemical industry, security occupies a very important position.

At present, the application of security products in the entire industrial chain of the energy industry has been extensive. In addition to the requirements of safe production in terms of its own production technology and employee training, the petrochemical industry is also used in oil fields, large chemical plants, drilling platforms, and chemical product storage warehouses. , Natural gas pipelines, etc., all require real-time monitoring of their production environment by security products.

Project system schematic diagram

System functions

Fully intelligent, easy to realize unattended: when the system detects an abnormality, the report can be sent to the person in charge via SMS and the Internet; open design, convenient for data management and on-site control;

"0" false negatives: the use of Rayleigh interference technology can accurately locate the interference location of the outside; and through the use of spectrum scanning technology, it is possible to identify characteristic intrusions and eliminate characteristic interference, extremely low false positives, and ensure that the system false negative rate is 0;

No electricity: Take advantage of the optical fiber is a passive device, no electromagnetic interference, more resistant to electromagnetic interference.

HY-FPS15 distributed optical fiber perimeter system

How the perimeter system works

Product Description

The optical fiber perimeter security system combines Rayleigh interference positioning technology and optical frequency domain scanning technology, through the optical fiber (cable) laid in the fortified area to touch or pass through the environmental stress of the load (such as walls, soil, fences, etc.), Analyze, transfer the disturbance signal to the system host, after signal extraction, waveform analysis, and intelligent behavior discrimination, different types of disturbances are judged, such as intrusion into prohibited areas, crossing walls, crossing fences, etc., to realize system early warning and alarm , And can link video, sound and light and other equipment to truly realize all-round, 24-hour all-round intrusion monitoring.

Feature

1) Three-dimensional protection, 360-degree perimeter security without dead ends;

2) Continuous distributed measurement can realize simultaneous monitoring of multiple points and multiple events without affecting each other;

3) High sensitivity and high accuracy (soil 5 meters);

4) Rich pattern recognition can accurately determine intrusion events;

5) Excellent electromagnetic insulation, no electromagnetic interference, and essential lightning protection;

6) Intrinsically safe and reliable, the optical fiber will not produce electric sparks at all, and the average power of the laser pulse is very low;

7) Simple construction and convenient maintenance;

8) The additional loss tolerance is high, and it can work normally even if there is an additional loss of 50%;

9) Intelligent monitoring, easy to realize unattended.

Application

Perimeter security for oil depots, natural gas, power plants and other related enterprises

Perimeter security in prisons, detention centers and other high security places

Various military and civilian airport perimeter security

Perimeter security for exhibition halls, museums, schools, villas, etc.

Military area ammunition depots, national defense borders and other perimeter security

Perimeter security along railways and highways

Technical parameter