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SPECIALTY
ABSORBED
​LIQUID HAZARDOUS PETROCHEMICALS STORAGE&

TRANSPORTATION SYSTEM

​LOADING CONTROL SYSTEM

 
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Bottom Skid-mounted

Skid-mounted equipment (the literal translation of skid-mounted means being installed on the sliding bottom plate, and the meaning of “skid” is utilized); skid-mountingmeans to fix a group of equipment on a chassis made of angle iron or joist steel, and the equipment can be moved and put into space through a crow bar and the modern hoisting equipment.

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Bottom Skid-mounted
Skid-mounted equipment (the literal translation of skid-mounted means being installed on the sliding bottom plate, and the meaning of “skid” is utilized); skid-mountingmeans to fix a group of equipment on a chassis made of angle iron or joist steel, and the equipment can be moved and put into space through a crow bar and the modern hoisting equipment; skid-mounting is a form for integral combination of an equipment framework and the equipment thereof. A loading skid is an overall integrated part of an integrating loading controller, flowmeter valves, pipelines, accessory equipment, crane pipes, middle connectors and cables and cable traies on an overall steel-constructed platform with a process connector, a control power supply and a communication interface reserved only.
Bilateral skid-mounted
Main Features:
1. Flexible and small in size
The skid-mounted equipment is optimized and designed generally in the factory and is small in size as a result. With skid-mounting is used, the equipment is made into an entirety; therefore, the equipment can be moved and relocated conveniently.
2. Integration ratio is high, installation in place is achieved and convenient maintenance is realized.
The loading skid integrates a controller, a flowmeter, valve, a pipeline, an accessory equipment, a crane pipe, a middle connecting piece, cables, cable trays, etc., and the loading skid can be installed conveniently on site as well as maintained and repaired easily.
3. The troubles of on-site installation are eliminated, cost is low, the construction period is short, normalization is high, error is less and materials are saved.
T he comparison between the loading skid and traditional on-site installation
The comparison between the loading skid and traditional on-site installation
Selection of types of the loading skid

Selection of types of the loading skid

Types of loading skid group:
In conventional use, loading skidding group can be divided into following types according to different mediums and loading-unloading methods:
A. Bottom loading skid-mounted group
B. Top loading skid-mounted group
C. Mobile-type loading skid-mounted group
 
The bottom loading skid-mounted sets 
Alkanes, ammonia, hydrocarbons, ethers and other closed skid-mounted
Bottom skid-mounted structure
Unilateral and bilateral, the length is about 4~6 meters;
Adaptive medium: LNG,LPG, Ether, ammonia, olefin
Materials of pipelines or components connecting with the liquid: 20# Steel. 304 and 316 stainless steel;
Supporting crane pipes AL2543、AL2503
Supporting flowmeters: Mass flowmeters and helical wheel flowmeter
Supporting valves: Pneumatic two-stage valves and electro-hydraulic valves are optional;
Supporting ESD oil spill protector: Under the integrated, API connector, liquid level switch ,tanker,
Other supporting instruments: The pressure gage, and the bimetal thermometer; Pressure transmitter (optional), gas valve (optional).
Other supporting processing equipment: The expansion joint, the hand-operated valve, the stop valve, etc.
Connections: Cables, galvanized tubes, cable trays, explosion-proof flexible pipes, etc.
 
Loading
process
parameters

LNG pipeline (liquid phase)NG pipeline (Vapor phase)
Operating temperature-196℃/50℃-196℃/50℃
Design temperature-196℃/100℃-196℃/100℃
Operating pressure0.55MPa0.1—0.55Mpa
Design pressure0.88Mpa0.78MPa
Design flow60m3/h200m3/h
MediumLNGNG
Density439.8kg/m32.41kg/m3
Viscosity0.1237mpa.s0.005mpa.s
Diameter3”3”
Factory instrument air0.5-0.7Mpa (providing 0.6MPa air source in factory)
Nitrogen purge0.4---0.8MPa (providing 0.7MPa air source in factory) Ambient temperatureAmbient temperature
Dangerous zoneZONE1
Ex gradeNot less than EXdii BT4
Protection levelNot less than IP65


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