Year1
- 工业氦：
- 99.9%
- 纯氦：
- 99.995%
- 高纯氦：
- 99.999%
Henan Yuanzheng Technology Development Co., Ltd. is located in Zhengzhou, the crossroads of China's transportation. The company is located in Mazhai Economic Development Zone, Zhengzhou. It is a comprehensive enterprise integrating development, production, sales and service. The company specializes in the development and supply of high-purity helium, high-purity oxygen, high-purity hydrogen, high-purity argon and other high-purity gases, industrial gases, special gases, mixed gases, and standard gases. At the same time, it undertakes gas equipment output, engineering design and installation business. Products are mainly used in electronics, military industry, aerospace, metal surface treatment, building materials, chemical industry, medicine, petroleum and daily chemical industries. Our company has advanced production equipment, complete product testing means and quality assurance system. The company's annual sales are around tens of millions of yuan. It has a sound sales network and focuses on corporate image, winning unanimous praise from customers.
The company's leading products are liquid oxygen, liquid nitrogen, liquid argon, nitrogen trifluoride, sulfur hexafluoride, high-purity nitrogen, high-purity oxygen, high-purity helium, high-purity argon, methane, etc., at the same time Operating various standard gases and mixed gases, the purity of the gases operated by the company is in a leading position in the country. The company can also provide users with various valves, instruments, gas cylinders, cryogenic storage tanks (tanks) and pipelines, complete sets of gas equipment or accessories, liquid oxygen, liquid nitrogen, liquid argon, various gases and equipment purchased by users, Our company can deliver accessories to users’ doorsteps.
The company has strong technical strength and rich construction experience in low-temperature liquid (liquid oxygen, liquid nitrogen, liquid argon) gas production projects and normal temperature air separation nitrogen (oxygen) production projects, and can undertake the tasks for users. One-stop service of gas supply engineering design, installation and commissioning. The company also has various testing instruments: gas chromatograph, liquid chromatograph, potentiostat, ultraviolet spectrometer, precision balance, etc., which can provide users with the preparation of mixed gases at any time.
Definition of pure helium and high-purity helium
Helium is a colorless, odorless, tasteless and non-toxic inert gas at normal temperature and pressure. Does not burn.
Chemical formula
No.
Molecular weight
Gas density./(,)
Liquid density./(.,.3)
English name
, technical indicators of pure helium and high-purity helium
Purity
r,
Impurity content r (,)
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Pure helium, high purity helium Uses
Used as filling gas for helium balloons and helium airships to replace highly flammable hydrogen
Liquid helium is used in superconducting magnets for MRI machines
Together with medical oxygen Breathing gas for deep-sea operations
Used as a leak detection gas for helium leak meters in the air-conditioning field
Used together with high-purity argon as a protective gas for special welding
Used as a gas chromatograph/ Precautions for carrier gas
of GC-MS and other instruments, pure helium, and high-purity helium
Ensure that the helium gas does not leak and the workplace is ventilated. When the helium content increases and the oxygen content is lower than... , the patient first developed rapid breathing, inattention, ataxia, and then fatigue, weakness, irritability, nausea, vomiting, coma, convulsions, and even death.
The packaged gas cylinders have a service life on them. All expired gas cylinders must be sent to a department for safety inspection before they can continue to be used.
When exhaust gas is used in each bottle of helium, the residual pressure in the bottle should be kept at ., and the minimum residual pressure should not be lower than . The bottle valve should be closed to ensure gas quality and safety.
Bottled helium should be classified and stacked during transportation, storage and use. It is not allowed to be close to open flames and heat sources. It should be kept away from fire, oil and wax, exposure to the sun, heavy throwing, and impact. When arc ignition or arcing is carried out on the cylinder, rough loading and unloading is strictly prohibited. Helium cylinders should be moved in short distances using special cylinder trolleys, and in long distances, dangerous goods transport vehicles should be used to transport helium cylinders.
The temperature of liquid helium is ℃, and contact with skin can cause severe frostbite.
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