Background and challenges:

Currently, the population of cities is increasing day by day, and the use of natural gas in cities has reached new highs, and demand is often in short supply. In recent years, my country has stepped up its efforts in the construction of gas transmission pipelines, but for highly complex underground gas transmission systems, how to conduct scientific and efficient management so that the staff can fully, accurately and timely master the urban gas transmission pipelines It is of great significance to realize the construction of smart cities and sustainable development of cities by giving full play to the role of gas transmission network information in urban planning, construction, operation and management by giving timely and correct solutions. my country's natural gas production in recent years is as follows:

At present, municipal governments at all levels have understood the role and status of underground gas pipeline networks in urban planning and management from the strategic perspective of urban development, laying a solid foundation for building a smart city. With the informatization of the urban pipeline network, the internal management of the gas pipeline network has transitioned from extensive to intensive, and the centralized management of the transmission process of the urban gas pipeline network has been gradually strengthened. The superior management unit also hopes to operate the facilities of the subordinate units. The situation and on-site emergencies are timely and comprehensively understood and mastered, so the full-time intelligent management system of the urban pipe network will be deployed and applied.

The main problems facing the system at this stage:

1) Inspection is time-consuming and laborious-urban underground pipelines are complex and changeable, manual inspection will cost a lot of manpower, material resources and time, and later data query is also time-consuming and laborious;

2) Lack of an intuitive data display platform-administrators are required to use multiple professional software to view the data separately during use. When there are errors in the data, there is a lack of comparison;

3) Slow response to emergencies-when a gas pipeline leaks, managers first need to check the pipeline design drawing, use experience to judge, analyze the cause of the accident, find out the treatment plan, and then arrange for personnel to carry out emergency repairs, from leak to shutdown The longer the valve time, the greater the leakage, the greater the risk and the more economic losses;

4) Single inspection method-security inspections and the handling of security incidents are extremely blind and uncertain. Not only will there be situations that cannot be inspected, but even if inspections are made, there will still be errors in the judgment of security response strategies, Issues such as insufficient execution in time. This will not only cause irreparable economic losses, but also serious casualties.

The goal of building:

In order to solve the problem of illegal operation of large machinery (such as excavators and rammers) or pipeline leakage near or above the urban gas transmission pipeline network, pressure regulating station, and community lines, it is urgent to promote the construction of a fiber optic warning system for the pipeline network and build a complete The infrastructure, integration and collection of optical fiber information data, and real-time monitoring of pipeline network information can promptly issue vibration or leakage alarms and output accurate positions, minimizing leakage hazards and economic losses.

The optical fiber early warning system of the gas transmission pipeline network uses the optical cable (single core) laid in the same trench as the monitoring medium for vibration analysis, pipeline leakage monitoring and alarm data transmission, and centralized digital information management of various integrated applications or results at the front and back ends.

The construction of the optical fiber early warning system of the gas pipeline network must achieve the following goals:

(1) Establish an urban pipeline network information system database based on geographic information technology to realize the comprehensive management, application and maintenance of urban pipeline network geographic environment information, pipeline network graphic information, and attribute data; provide the company's unified urban pipeline network spatial data and The attribute data management platform gives full play to the powerful functions of the graphic-text integrated system.

(2) Realize vibration analysis and leakage analysis. Determine the vibration point or leak point through optical fiber sensing technology, perform multiple alarms, and feedback the vibration point or leak point location to the operation management unit and the fire, public security and other alarm systems to form a linkage between each unit and carry out subsequent treatment. Forms functional requirements such as auxiliary safe transmission and auxiliary emergency repair.

solution:

The full-time intelligent management and operation system solution of urban pipe network is mainly applied to operating enterprises. At the same time, it can transmit system alarm and other data to municipal, fire, public security and other units to realize multi-unit collaboration and linkage. When a major safety accident or hidden danger occurs, each Relevant units can respond in time to minimize the damage. The system structure is as follows:

City pipe network full-time intelligent operation system

The full-time intelligent management system of the urban pipe network adopts optical fiber temperature measurement and vibration measurement technology, the Internet of Things, cloud platform, and 5G application technology. Under the guidance of the design principle of "standardization, integration, and intelligence", it adopts standardized industry products to achieve The following functions:

(1) Establish a fiber optic security detection system to realize real-time monitoring of the entire urban pipe network, and realize automated and intelligent centralized control of security;

(2) Establish a data center with traceable historical information and generate a basic data group for pressure regulating station data, pipeline data, valve status and other information, so as to achieve the digital control of all-round status data and equipment information of the optical fiber security detection system;

(3) Establish a comprehensive management platform for the optical fiber security detection system to achieve fine control of urban pipeline network lines and voltage regulating stations, as well as equipment data and equipment status monitoring, supplemented by convenient smart mobile terminal APP and other functions, which can be pushed in real time Alarm information, etc.

Program highlights:

The system adopts B/S architecture design and development, and the client can directly operate through the browser, providing real-time and convenient practicability of system operation. The system has the following technical performance:

(1) Data integrity: 7*24 hours of urban pipe network various attribute data, which satisfies the system's requirements for real-time data collection and transmission.

(2) Intuitive data display: Using geographic information systems and historical curves, you can intuitively view the real-time data and historical operating data of the pressure regulating station and valves.

(3) The system is easy to use in real time: make full use of the existing mobile network, and the client can directly access through a browser or APP, and can view equipment data anytime and anywhere, and receive equipment status changes and alarm information.

(4) Wide coverage: The urban pipe network optical fiber early warning system has a wide access coverage, unlimited expansion, unlimited access locations, and can meet the access needs of mountainous areas, towns, cities, and cross-regions.

(5) The transmission capacity of the system is large: the monitoring center and each voltage regulating station realize real-time connection. The transmission mode can meet the needs of burst data transmission.