LNG Gas Tank/Cylinder MIG Girth Welding machine/ Circular Seam Welder

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Liquefied natural gas (LNG) is natural gas (predominantly methane, CH4, with some mixture of ethane, C2H6) that has been cooled down to liquid form for ease and safety of non-pressurized storage or transport.
Improved Air Quality. Natural gas is the cleanest-burning fossil fuel, therefore vehicles running on LNG produce lower levels of toxic emissions and air pollution than equivalent diesel engines. Nitrogen Oxides (NOx) emissions are reduced by 40-50% and articulate Matter (PM) emissions are reduced by approx. 80%.

LNG Cylinders Benefits

The differences between compressed natural gas (CNG) and liquefied natural gas (LNG) are the methods of production and storage.
Both fuels are primarily methane (CH4). LNG is natural gas ‘frozen’ to less than -162o Celsius (-212o Fahrenheit) to liquefy it. The advantage of liquefaction over compression is that the fuel is at a higher density, meaning more energy is contained in the same space – LNG is roughly 600 times the density of natural gas at standard pressure.
In general, LNG is more commonly used for heavier vehicles whereas CNG is used for lighter vehicles. This is not a hard and fast rule though and both fuels may be used in either class of vehicle.
Once the gas is liquefied, it must be kept cold or it will revert to its gaseous state, thus LNG cylinders are designed in a
similar fashion to a thermos flask, (i.e., with substantial insulation). This design allows for the fuel to be kept cold for two
weeks or more.

What can we supply?

We can provide a complete solution: from equipment manufacturing to final product production.
Normal Size LNG Cylinder
Diameter: Φ600mm ~ Φ1000mm; specifications 450L (Φ600 / 650mm), 1000L (Φ850mm), 1350L (Φ950mm), 1350L (Φ1000mm) Length (without
head): 1110mm ~ 1550mm

(Note: 400mm test board welding length is reserved, and the key board is driven and compressed by an independent cylinder).

Board thickness: 3.0mm ~ 5.0mm; Material: 304 stainless steel.
No.
Device name
Qty
No.(worker)
Remarks
1
Inlet and outlet robot welding station
1
1
V-shaped double-station layout, in turn welding inlet and outlet pipes, gas phase pipe joints
Double station layout, welding 2 joints in turn
2
Distribution head, joint robot welding station
1
3
Inlet and outlet, gas phase tube, dispensing head artificial welding workbench
1
1
manual welding
4
Supporting neck tube, flange inner and outer ring seam robot welding workstation
1
1
5
Supporting neck tube, flange inner and outer ring seam robot welding workstation
1
1
6
Support neck tube ring seam welding machine
1
1
Double gun configuration
7
Front head, support neck tube, reinforcing plate manual assembly spot welding machine
1
1
Manually assembling the reinforcing plate and spot welding
8
Front head, support neck tube ring seam welding machine
1
1
9
Front head, reinforcing plate, ring seam welding machine
1
10
Front head, support neck tube inner ring seam welding machine
1
1
11
Front head, molecular sieve package manual assembly spot welding machine
1
1
Manual assembly spot welding
12
Front head, molecular sieve, ring seam welding machine
1
0
13
Molecular sieve package double-sided head manual welding station
1
1
14
Internal pipeline manual welding station
2
2
15
Molecular sieve package ring seam welding machine
1
1
16
Front head logistics transmission line
1
1
Including: attachment welding equipment transmission line, double speed chain transmission line, aerial transplanter, power assist
robot
17
14

LNG Cylinders Manufacturing Processes

Automatic pass-through straight seam welding machine
The equipment automatically completes the feeding, fixed seam, closed seam, compaction, placement / point fixed arc board, straight seam welding and discharge of the cylinder.
No.
Name
Brand
1.
PLC
SIEMENS
2.
Frequency converter
SIEMENS
3.
HMI
SIEMENS
4.
Pneumatic components
SMC
5.
Linear slide rail, ball screw
HIWIN
6.
AC motor
SEW
7.
AC servo motor
SIEMENS, Schneider
8.
Circuit breaker, Contactor, electronic overload protection
Schneider
9.
Button
Schneider
10.
Sensor
OMRON
11.
Encoder
OMRON, Koyo
Welding robot workstation for inlet and outlet liquid pipes and pipe joints
The robot of the inlet and outlet liquid pipe and the double-sided joint is welded automatically. Welding process: TIG. Welding method: V-shaped double station layout; each station is equipped with 3 station fixtures, corresponding to 3 different inlet and outlet pipe workpieces, using manual picking and placing, positioning the workpiece, and robot automatic welding. Robot system: The robot system is equipped with products of Japan’s MOTOMAN company, including the body of the arc welding robot embedded in the MA1400 cable and the robot control box.
Welding robot workstation for inlet and outlet liquid pipes and pipe joints
The robot of the inlet and outlet liquid pipe and the double-sided joint is welded automatically. Welding process: TIG. Welding method: V-shaped double station layout; each station is equipped with 3 station fixtures, corresponding to 3 different inlet and outlet pipe workpieces, using manual picking and placing, positioning the workpiece, and robot automatic welding. Robot system: The robot system is equipped with products of Japan’s MOTOMAN company, including the body of the arc welding robot embedded in the MA1400 cable and the robot control box.
Customized machine for circle welding of supporting neck tube and distribution head
The support neck tube is automatically welded to the distribution head. Welding process: TIG. Welding method: two welding guns are automatically welded at the same time. The support neck tube and the distribution head that are completed by spot welding are manually clamped and positioned by the front pneumatic chuck of the rotary head, and the neck tube is positioned tightly by jacking the cylinder.
Front Dome head, support neck tube, reinforced plate manual assembly spot welding machine
Welding process: TIG; Welding method: manual welding; Positioning method: online layout, the front head is positioned and transmitted by the accompanying tooling plate, the inner header and the gas valve are manually placed and positioned, and the manual pressing clamp drives the positioning and pressing mechanism to press the workpiece
Front Dome, support neck tube welding robot workstation
Welding process: TIG. Welding method: single-station online layout; automatic lifting and positioning of workpieces, robot automatic welding. Robot system: The robot system is equipped with products of Japan’s MOTOMAN company, including the body of the arc welding robot embedded in the MA1400 cable and the robot control box.
Special machine for inner seam welding of front Dome and supporting neck tube
The front Dome is automatically welded to the inner circumferential seam of the supporting neck tube. Welding method: the workpiece is positioned with the accompanying tooling plate, and the pneumatic lifting mechanism is positioned; the welding torch is fixed, and the workpiece is continuously rotated and welded. Welding process: TIG + automatic wire filling. The workpiece is transmitted on the transmission line, and the lifting mechanism on the transmission line lifts the workpiece and carries out welding online.
Front Dome, molecular sieve package circle welding machine
The front Dome and the molecular sieve package are welded automatically. Welding method: the workpiece is positioned with the accompanying tooling plate, and the pneumatic lifting mechanism is positioned; the welding torch is fixed, and the workpiece is continuously rotated and welded. Welding process: TIG + automatic wire filling. The workpiece is transmitted on the transmission line, and the lifting mechanism on the transmission line lifts the workpiece and carries out welding online.
Automatic welding production line for rear Dome attachment
Features: Adopt a reasonable and advanced process layout process, a complete solution for the entire line, automation, and fewer people. Advantages: Automatic welding special machine, handling robot, welding robot are reasonably matched, and cooperate with automatic logistics transmission line to complete automatic logistics transmission and automatic welding of workpieces. The rear head adopts the accompanying tooling plate for positioning and transportation, and the accessories are automatically screened or manually fed. All welding procedures do not require manual participation in welding. It can complete the automatic welding of accessories such as support rods, reinforcing rings, small caps, reserved cylinders and other accessories.
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