About LNG 

LNG is a high-quality, efficient and clean energy source. LNG can be stored and transported safely and conveniently like oil. The development of LNG technology has increased the competitiveness of natural gas in the world. As an "environmentally friendly" energy source, the status of natural gas is increasing and the market prospect is very broad. LNG engines emit only 25% of the nitrogen oxides emitted by diesel engines. Hydrocarbons and carbon oxides are only 30% and 12% of diesel engines respectively. The emissions of particulate matter are almost zero, and the sound power of LNG engines is only diesel engines. 36%; using LNG as a fuel for automobiles, the nitrogen dioxide and carbon dioxide in the exhaust gas are 98% and 30% lower than that of fuel oil, which is more environmentally friendly.

Flow chart of LNG production line

   

Process of LNG cylinder production line 

--Rolling
  The rolling machine adopts the special 6-roller structure. The opening of the barrer rolling circle has no straight side section, and the barrel with different diameters can be changed automatically..
   Main rol rotation and lifting are driven by ac servo motor and precision reducer, with higher precision and better flexibility.
   Palletizing plate vacuum manipulator automatically removes palletizing material, plate automatic alignment, servo drive feeding
   The cylinder body after rolling is automatically fixed seam discharging, and directly butt with the following straight seam welding machine, the whole process does not need manual participation

 
                                                                                             

LOADING                                                                                                                  SET THE SEAM

                           

Automatic through seam welding machine

     The main machine adopts through-type structure, the cylinder is fed befo, discharged after, and the production efficieny is high.
      Plasma welding and wire filling are used for direct seam welding

                                                           

 Longitudinal seam detection

    With CR flaw detection, no need to apply film, fast speed, high efficiency and low cost
Weld seams do not require manual labeling and automatic marking
The main defects can be manually confirmed by the computer after automatic identification, improve the efficiency of flaw detection and reduce the rate of missed detection.

Degreasing cleaning

    Ultrasonic cleaning of lotion, spray rinsing, municipal water bubbling and rinsing, hot air drying station
The cleaning process is controlled by a programmable controller without manual intervention
Fully enclosed design to prevent man-made pollution and prevent water vapor spill
       

Automatic cutting system for straight seam drawing arc plate

The cylinder is transferred in the air, corresponding to 3 stations: straight seam discharge station, the arc plate is positioned to find the cutting station, and the material is transported.
The cylinder is transported by air, automatically rotated to find the position of the arc plate, automatically cuts the arc plate, and automatically grinds the burr

        

Fully automatic Assembly machine

                            

Automatic Circumferential welding machine

The ring seam welder can be in the form of special machine welding or robot welding, and the workpiece can be automatically loaded and unloaded by manual auxiliary feeding or aerial manipulator.
Contact or non-contact weld automatic tracking system can be configured to automatically locate and track weld position.

      

Circumferential seam detection

    With CR flaw detection, no need to apply film, fast speed, high efficiency and low cost
Weld seams do not require manual labeling and automatic marking
The main defects can be manually confirmed by the computer after automatic identification, improve the efficiency of flaw detection and reduce the rate of missed detection.
Simultaneous imaging of two loop seams to improve work efficiency

Pressure test

Efficient and safe sealing tooling
Fully automatic pressure, data curve recording
Fast air supply system to ensure that the cylinder reaches the set pressure quickly

Helium leak test

Improve the efficiency and utilization of equipment by testing 6 cylinders per set
Quickly block tooling and effectively seal the dispensing head
Detectable leak rate 5 x 10-13 Pa m3/sec
Maximum detectable pressure 1330 Pa

--Burning
Automatically conveyed to the roasting station for even rotation, the entire cylinder can be heated and dried evenly
The inner liner includes a separate head heating and baking mechanism
Can adapt to different specifications of gas cylinders

--Twine and registration
Winding machine with tension control for precise control of winding circumference
The gas cylinder can be automatically transferred to the winding station by the shuttle bus.
Fitting the automatic turning tool to lift the outer cylinder upside down

Vacuumizing

Creative combination of stereo library and vacuum; all delivery automation
3 layers of solid library, 3 layers of vacuum, effective use of workshop space
Optional molecular pump, saving 50,000 yuan in electricity every year
Optional automatic replacement system, automatic vacuuming after joint leak detection
Special sealing tooling, durable and efficient without leaking

Polishing

Automatic and efficient, surface roughness is about Ra≤0.8μm
Multi-stage throwing head, thousand impeller, nylon wheel, cloth wheel step by step to improve the finish
Fully enclosed enclosure for improved safety, dust separation and noise isolation

Valve assembly

The gas cylinder automatically enters and exits the chain through the aerial transplanter, and the plate chain adopts stepping mode.
Each station is welded or assembled with fixed valves to increase work efficiency

Final assembly

The main assembly chain is flush with the ground for manual operation, and the board chain adopts stepping mode.
Each station is welded or assembled with fixed fittings to increase work efficiency
Automatically install the cylinder into the frame

Automatic conveying

Automatic cylinder conveying through drum line, clamping machine, shuttle bus, turntable, battery car, lift, etc.
Automatic shutdown when there is no workpiece, reducing no-load energy consumption

Laser coding(optional)

Make a QR code on the gas cylinder dispensing head to facilitate MES system information collection
Laser coloring marking without the need for handwriting on the cylinder

Digital, information, intelligent production line

    Automatic information collection: the transmission of product identity information and quality information ensures that the product identity is unique during the entire production process, and product quality information can be traced back. The production line equipment automatically scans to obtain the QR code or barcode of the product, and feeds it back to the centralized control center. The centralized control center completes the identification of the product and issues the production instruction. The equipment is automatically completed throughout the production process.
    Automatic monitoring of process parameters: welding process parameters for product processing, such as welding current, welding speed, shielding gas flow and welding trajectory feedback to the centralized control center.
    Automatic monitoring of quality indicators: key quality indicators that have a direct impact on welding quality, can automatically verify and determine whether it is qualified and feedback information to the centralized control center. Digital, information, intelligent production line ØAutomatic changeover: It can automatically switch the fixtures of the equipment by scanning the model of the product to realize automatic product switching.
    Automatic maintenance and maintenance alarm: Automatically digitize the fault point and feed back the fault point to the centralized control center. It has automatic alarm function for maintenance of key components such as equipment, welding power supply and consumable parts. ØAutomatic output production report: Each product can automatically output production reports, including product identity, quantity, quality and other reports.


RFQ for LNG cylinder circumferencial welding machine:

Q: Can you design machines according LNG cylinder technical drawing?

A: Sure, please send your technical drawing to us.

Q: What are the benefits to choose your machines?

A: Our machines are strong and reliable for long term industrial manufacturing

 

We need to know following information to quote you correct machineries:

1. Size/Technical Drawing of the cylinders you want to make?

2. Are you new in this area or you already have some machines in the workshop?

3 Capacity you require, How many pieces and sizes you want to make per day?