Welcome to Pejvak Rayan Company website

Manufacturer of Industrial Ultrasonic Testing Equipment & Accessories

info@pejvakrayan.com

WhatsApp: +989195103539

Pejvak Rayan Company,3Th Floor,No.19
,Kashani BLV,Sadeghieh Sq,Tehran,Iran

CNG Cylinder Ultrasonic Testing Inspection system

CNG Cylinder Ultrasonic Testing Inspection System Pejvak Rayan (FLAW HUNTER CNG) is a fully automatic ultrasonic system designed for offline troubleshooting and thickness measurement of steel CNG cylinders (diameter 4-20 inches and thickness 3-20 mm). CNG cylinder ultrasonic testing is a non-destructive testing (NDT) method used to evaluate the integrity of CNG (Compressed Natural Gas) cylinders, ensuring they are safe for continued use. This technology can measure the thickness of the cylindrical portion of the gas tank body point-by-point and detect all longitudinal and transverse flaws on the interior and exterior surface.1

Advantages of ultrasonic testing for CNG cylinders

After the test is over, the cylinder can be utilized because it has not been damaged. 1

All types of flaws, even minor ones, and variations in the cylinder wall’s thickness can be accurately detected by it. 2

Compared to conventional testing techniques like hydrostatic testing and observation, it is quite more efficient and accurate. 3

Because safe ultrasonic waves are used instead of hazardous chemicals or radiation, this procedure is safe for both people and the environment. 4

The CNG test’s goal

It ensures the cylinder’s structural integrity and safety

Verifies that the cylinder quality conforms with safety standards

It can recognize various types of defects that lead to leaks and cylinder structural damage

Specifications of the cng cylinder ultrasonic testing

The immersion technique and water jet method were used in the design and construction of Pejvak Rayan’s CNG sylinder ultrasonic testing inspection system because of the high sensitivity of gas tank testing. 1

Ultrasonic test of these cylinders involves the propagation of ultrasonic beams into the tank wall in three directions: at an angle of zero degrees perpendicular to the cylinder wall, at an angle of 45 degrees parallel to the cylinder axis, and at an angle of 45 degrees perpendicular to the cylinder axis. The ultrasonic waves strike the internal and exterior faults, bounce back, and appear as a signal on the device’s screen. With an accuracy of 0.05 mm, this device can detect N5 grooves at a depth of 5% of the cylinder thickness and measure the thickness of cylinders. 1

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Probe holder and the number of channels of cng cylinder ultrasonic testing equipment

This cng cylinder ultrasonic testing system rotates its cylinders in place, which causes the probes to go along and scan the tank. Probes are positioned at various angles inside a unique probe holder. Using a unique shoe, this probe holder is set on the cylinder’s surface.The shoe scans and diagnoses the entire cylindrical part of the cylinder and measures the thickness by moving on the rotating tank body at a precise speed and longitudinal direction with the help of accurate rails and servomotor.3

Depending on the demands of the customer, this system might have anywhere from five to fifteen channels. A 14-inch cylinder with a length of one meter can be fully tested by its fifteen-channel system in one minute.4

The software of the cng cylinder ultrasonic testing system analyzes the depth and position of flaws in the circumference and length of the cylinder and saves all test results in distinct strip charts and color C-scan diagrams.5

Other unique features of CNG cylinder ultrasonic testing system

Test findings are shown in a colored C-scan chart
the capacity to examine test results offline
supplying precise data on the number of cylinders that were allowed or rejected

Test results reproducibility with POD = 99%