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Overview:
The natural gas transmission pipelines such as the West East Gas Pipeline and the Sichuan East Gas Pipeline mostly pass through areas with heavy hills and high mountain landforms. The pipelines cross multiple mountain ranges, with high mountains and deep valleys, crisscrossing gullies, steep peaks and steep slopes, and extremely dangerous terrain; In addition, many areas have inconvenient transportation and poor conditions for equipment access roads. In order to ensure the achievement of natural gas quality control goals and standardize measurement management after the natural gas transmission pipeline project is put into operation, York Instrument Company adapts to the needs of the maintenance and repair center and combines with the actual situation on site to integrate various detection equipment and laboratory instruments into one vehicle, so as to improve the ability of cross regional rapid detection and testing, and meet the needs of maintenance, repair and maintenance of natural gas transmission pipelines.
Basic Technical Scheme for YK9900 Testing and Testing Vehicle of Natural Gas Pipeline Maintenance and Repair Center:
According to road conditions, special vehicles require the installation of front wheel drive, and two/four-wheel drive models are selected. The inspection vehicle is divided into a driver's cabin, an inspection workshop, and a storage room. The length of the inspection workshop is determined according to the needs. The inspection workshop is equipped with front and rear walls, and instruments are installed on both sides, with a personnel aisle in the middle.
Vehicle selection:
The testing and testing vehicle is a modified 11/17 seater high roof light passenger car produced by Nanjing Iveco Company. The car has a beautiful and generous appearance, ample interior space, and good power performance.
Vehicle body renovation:
The car body is divided into two parts using simple partitions, the front part is the passenger compartment and the rear part is the work compartment. The seat is original from IVECO, with high backrest and headrest. The driver's seat can be adjusted back and forth, with good comfort and safety.
The work cabin is covered with specialized composite flooring leather that is anti slip, corrosion-resistant, flame-retardant, antibacterial, and easy to clean and disinfect. The interior of the car is aesthetically pleasing and easy to maintain.
Basic equipment:
(1) Power distribution system:
There are two sets of power input systems in the car. The first set uses an external 220V AC power supply from the mains, which enters the UPS through the winding reel and mains interface, and is powered by the UPS for various electrical appliances. The external waterproof socket is installed in the lower corner of the rear of the car, and the mains power can be connected to the UPS power system inside the car through a winding reel and this waterproof socket. The second set is a battery pack as a backup power source. Four sets of six hole sockets are installed at appropriate positions on the workbench, and two or three socket sockets can be selected to connect to 220V power supply for testing equipment, etc. In addition, two sets of UPS sockets are also configured. Install four work lights in the workspace to ensure the needs of testing work.
(2) Workbench:
Arrange left and right combination anti-static workbenches in the workspace. The workbench is made of waterproof material and is bolted to the vehicle floor. It is bonded to the side panel with high-efficiency imported adhesive, which is firm and reliable, and is not prone to abnormal noise and vibration during operation. The workbench surface is made of specially treated sheet metal, with a smooth surface, easy to clean, and beautiful appearance. Make drawers and instrument cabinets under the countertop as needed.
(3) Exhaust system:
Equipped with a top mounted exhaust fan to promote air circulation inside the car and keep the air fresh.
(4) Water supply and sewage discharge
The work cabin is equipped with a set of water supply tank and sewage tank for convenient water and sewage discharge.
(5) Other auxiliary equipment:
Equipped with three anti-static chairs for laboratory use.
Main technical parameters of the inspection vehicle:
Vehicle standard configuration list:
The on-board detection and testing system equipment includes:
Natural gas dew point testing system
Hydrogen sulfide analysis system
Carbon dioxide analysis system
High pressure natural gas sampling system
● Gas chromatograph
Natural gas standard component gas, high-purity helium gas
● Pressure verification system
● Temperature calibration system
Toxic and harmful gas detection system
● Portable gas detector
● Air quality monitoring system
Positive pressure respirators and gas masks, etc
Natural gas analysis equipment:
Pressure and temperature calibration equipment:
Measurement system analysis and diagnostic system equipment:
HSE safety protection equipment:
Supporting tools and materials:
Generator and technical requirements:
(1) Select one YK6800Ti diesel digital silent generator specifically designed for laboratory instrument power supply and a vehicle mounted generator. Output voltage: 220V, 50/60Hz, maximum power generation up to 5.5KW, stable and reliable quality, and equipped with universal walking wheels for easy handling;
(2) Equipped with a cable reel with a length of 50m and a cross-sectional area of 2.5mm2 for connecting to external mains power;
Pressure and temperature calibration system:
Intrinsic safety design, fully Chinese menu, easy and fast operation. High precision, fully functional calibrator; Implement pressure calibration, temperature calibration, electrical signal and frequency signal calibration, etc.
● Data archiving management - perfect communication with verification management software;
● Suitable for on-site environment, with a dust-proof and waterproof enclosure with a protection level of IP65;
● Fully modular design allows you to choose configuration functions according to your needs;
Internal and external pressure modules;
● HART (Addressable Remote Sensor High Speed Channel Protocol) communication;
● Foundation Fieldbus H1 or Profibus bus technology PA communication;
Pressure range: -100Kpa to 25Mpa;
The portable six function temperature calibration furnace, in conjunction with a precision thermometer, meets the calibration requirements for temperature sensors and temperature transmitters within the temperature range of -35 ℃ to 140 ℃.
Gas alarm and technical requirements:
(1) Four gas detectors (MC-4) can be used to simultaneously detect the concentrations of H2S, CO, O2, and combustible gases (0-100% LEL or 0-5.0% methane).
(2) Range and Resolution
Explosion proof intercom:
(1) Choose Motorola GP328 explosion-proof handheld radio walkie talkie;
(2) The basic parameters are shown in the table below
Vehicle communication and data processing:
The monitoring vehicle is equipped with wireless communication and data transmission network connection devices (using TD-SCDMA or WCDMA) for necessary communication and data transmission.
Main functional features:
● Supports automatic switching between TD-SCDMA and GSM dual-mode;
● With VoPC function: inserting headphones into the computer allows for voice conversations;
● High transmission rate TD-SCDMA HSDPA service -2.8Mbps;
High transmission rate EDGE data service -236.8kbps;
Excellent dual network SMS group sending function - SCDMA/GSM;
Self installing, self starting - no need for optical drive driver.
Main technical indicators:
TD-SDMA/HSDPA 2010-2025mhz；
GSM/GPRS/EDGE 900/1800MHz；
Positive pressure respirator:
The equipment passed the EN 137 flame engulfment test (1000 ℃, 10 seconds);
Pressure: 300 bar;
Capacity: 6.8L original imported gas cylinder;
The back panel adopts ergonomic design;
The straps and waistband are equipped with wide and soft padding, greatly improving comfort;
The air valve adopts a quick plug connection method, which is easy to replace;
The universal gas cylinder fixing strap is suitable for all specifications of gas cylinders, including double cylinders;
The weight is concentrated in the arms, greatly reducing the tension and fatigue on the back.
Carbon dioxide content analysis instrument:
technical indicators
● Range:0～1，0～2，0～3，0～5，0～10，0～25；
●Accuracy:± 0.5% (full range);
●Linear:±1%；
●Response time:90% of the full range takes less than 10 seconds;
●Sensor:Specialized electrochemical sensors;
●Display:4-1/2 digit LCD display;
●Power supply:230VAC, 50-60Hz optional backup battery;
●Traffic:1～2SCFH(0.5～1.0 l/m)；
●Sample gas pressure:0.1～1 kg/cm2;
Micro oxygen content analysis instrument:
Not affected by hydrocarbons or other oxidizing gases
Intrinsically safe design, which can be used for Class 1, Group 1, Groups C and D, and necessary options are provided: portable box (with built-in foam protection), non diffusive hose, demister, etc;
Technical Indicators:
●Display: High precision 3D digital LCD display;
●Range: 0-10ppm, 0-50ppm, 0-100ppm,
0-500ppm，0-1000ppm，0-5000ppm，
0-1%, 0-5%, 0-10% and one air calibration range
0-25%, automatic and rapid switching of 10 ranges;
●Repeatability: ± 1% of full scale at room temperature (± 3% of full scale at 10ppm range);
●90% full-scale response time: 10-50 seconds;
●Rechargeable nickel cadmium battery: continuous operation for 180 hours, with low battery indicator;
●Size: 115 × 242 × 115mm, weight 2.2kg;
●Complete gas sampling system, quick connection.
High pressure natural gas sampler:
technical indicators
Sampling pressure: 20MPa
● Capacity: 1000ml
Precision pointer pressure gauge 0-25MPa
● Portable case is shockproof, pressure resistant, and explosion-proof
Sampling device:
The device that connects the sampler to the gas pipeline,
Technical Indicators:
Pressure: 10MPa;
● Provide a quick connection interface;
● Meet the explosion-proof requirements of natural gas sites;
The service life should be long.
Diagnostic software configuration:
(1) One set of Customer Ultrasonic Interface (CUI) ultrasonic flowmeter diagnostic software.
CUI software customer interface software is a Windows based ultrasonic flowmeter diagnosis and monitoring software package, which is an advanced real-time monitoring and diagnostic tool designed by DANIEL ultrasonic flowmeter.
The specially designed help tool "wizards" simplifies the procedures for on-site driving, actual fluid calibration, simulation calibration, and frequency output testing.
Various measurement and diagnostic data can be obtained through direct connection and remote methods.
Standard gas:
(1) Natural gas standard gas
● Gas and cylinder capacity and quantity: 4L x 2 pieces;
Quality: First level standard gas.
(2) High purity helium gas
● Gas and cylinder capacity and quantity: 40L x 2 pieces;
Quality: 99.999%.
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