Helium_QINGDAO SAINS GAS TECHNOLOGY CO.,LTD

First, the product name

Industry helium Helium High purity helium Ultra pure helium He

Second, helium chemical molecular formula

He

Third, the relative molecular mass of helium

Relative molecular mass: 4.003 (calculated according to the international relative atomic mass in 2005)

Fourth, helium national standard

Pure helium, high purity helium, ultra pure helium national standard GB/T 4844-2011

Pure bismuth, high purity helium, ultra pure helium technical requirements

project	index
project	Pure		High purity	Ultra pure
Helium (He) purity (volume fraction)/10-2 ≥	99.99	99.995	99.999	99.9999
Helium (Ne) content (volume fraction)/10-6 <	40	15	4	1
Hydrogen (H2) content (volume fraction)/10-6 <	7	3	1	0.1
(Oxygen (O2) + Argon (Ar)) content (volume fraction)/10-6 <	5	3	1	0.1
Nitrogen (N2) content (volume fraction)/10-6 <	25	10	2	0.1
Carbon monoxide (CO) content (volume fraction)/10-6 <	1	1	0.5	0.1
Carbon dioxide (CO2) content (volume fraction)/10-6 <	1	1	0.5	0.1
Methane (CH4) content (volume fraction)/10-6 <	1	1	0.5	0.1
Water (H2O) content (volume fraction)/10-6 <	20	10	3	0.2
Total impurity content (volume fraction)/10-6 ≤	100	50	10	1

Five, helium purity

99.99%, 99.995%, 99.999%, 99.9999%

Sixth, packaging specifications

Serial number	product	State (meteorological or liquid phase)	Container (L or m3)	Working pressure (MPa)	Container height (excluding bottle valve, bottle cap) mm	Empty weight of container (excluding bottle valve, bottle cap) kg	Filling capacity (pressure or weight) MPa or kg	Supply mode	Brand
1	Helium	Gaseous state	4L（Φ140）	15MPa	395	7.1	10-15MPa	Available in cylinder or aluminum alloy cylinders	Runaway®
2	Helium	Gaseous state	8L（Φ140）	15MPa	680	11.5	10-15MPa
3	Helium	Gaseous state	10L（Φ159）	15MPa	671	13.5	10-15MPa
4	Helium	Gaseous state	15L（Φ159）	15MPa	956	19	10-15MPa
5	Helium	Gaseous state	20L（Φ219）	15MPa	715	23	10-15MPa
6	Helium	Gaseous state	40L（Φ219）	15MPa	1315	48	10-15MPa
7	Helium	Gaseous state	50L（Φ219）	20MPa	1315	48	10-15MPa
8	Liquid helium	Liquid	Customer settings	——	——	——	——	Use cryogenic container supply	Runaway®
9	Remarks	Due to differences in container design pressure, etc., the above data is slightly different, please be aware. Please contact 40009 63336 or 18563963366 for details.

Seven, helium application

Helium is widely used in military, scientific research, petrochemical, refrigeration, medical, semiconductor, pipeline leak detection, superconducting experiments, metal manufacturing, deep sea diving, high-precision welding, optoelectronics production.

1. Low-temperature cold source: Using the low boiling point of liquid helium at -268.9 °C, liquid helium can be used for ultra-low temperature cooling. Ultra-low temperature cooling technology has a wide range of applications in the field of superconducting technology. Superconducting materials need to exhibit superconducting properties at low temperatures (about 100K). In most cases, only liquid helium can easily achieve such extremely low temperatures. . Superconducting technology has a large application in maglev trains in the transportation industry and MRI equipment in the medical field.

2, balloon inflation: because the density of helium is much smaller than air (the density of air is 1.29kg / m3, the density of helium is 0.1786kg / m3), and the chemical properties are extremely inactive, safer than hydrogen (hydrogen can be burned in the air It may cause an explosion. Helium is often used to fill gas in spacecraft or advertising balloons.

3. Inspection and analysis: The superconducting magnet of the nuclear magnetic resonance analyzer commonly used in instrumental analysis needs to use liquid helium to cool down. In the gas chromatographic analysis, helium gas is often used as a carrier gas, and the helium gas permeability is good and non-flammable. Used in vacuum leak detection, such as helium mass spectrometer leak detectors.

4. Protective gas: Utilizing the inactive chemical properties of helium, helium is often used as a protective gas for welding metals such as magnesium, zirconium, aluminum and titanium.

5. Other aspects: Helium gas can be used as a high-vacuum device, and the nuclear reactor is used as a pressurized gas for transporting liquid propellants such as liquid hydrogen and liquid oxygen on rockets and spacecraft. Helium is also used as a cleaning agent for atomic reactors, a mixed gas for breathing in the field of marine development, a gas filled with a gas thermometer, and the like.

Eight, matters needing attention

1. The pressure is usually 15MPa. When using it, use the pressure reducer such as YQY-12 or 152IN-125 to decompress and use. Before use, use soapy water to check the gas pipeline to ensure that the gas pipeline does not leak.

2, to ensure that helium does not leak, keep the workplace ventilated, when the content of helium increases the oxygen content is less than 19.5%, the patient first appears to have increased breathing, inattention, ataxia; followed by fatigue, irritability Nausea, vomiting, coma, convulsions, and death.

3. When using exhaust gas in each bottle of helium, the residual pressure in the bottle should be kept at 0.5MPa, and the minimum pressure should not be lower than 0.25MPa. The valve should be closed to ensure gas quality and safety.

4. Bottled helium should be stacked in the transportation, storage and use. It is not allowed to be close to open flames and heat sources. Do not near fire, do not touch oil wax, do not expose to the sun, do not throw heavy, do not hit, do not on the cylinder For arc ignition or arcing, it is strictly forbidden to handle rough handling. For short-distance moving helium cylinders, special trolleys for cylinders should be used, and long-distance moving cylinders should be transported by dangerous goods transport vehicles. The temperature of liquid helium is 4.25K, which can cause severe frostbite when in contact with skin.

5. The use and inspection of cylinders for storing helium shall comply with the provisions of the “Safety Supervision Regulations for Cylinders” of the State Bureau of Quality and Technical Supervision. The inflation pressure of cylinders shall not exceed the specified pressure. The helmet should be installed at any time. A protective valve should be inspected every three years (except for special cases) for external inspection and hydraulic pressure test. After the test is passed, the gas cylinder can be used continuously.

Corresponding parameter set not found, please add it in property template of background

暂未实现,敬请期待

Products

Helium