1. Company Profile
Shanghai Fengxian Equipment Vessel Factory was founded in 1982, and specializes in designing and
manufacturing all kinds of pressure vessels. We have a high profile
in the industry. And in 1998, we registered the brand of “Shen
Jiang”. Our pressure vessels are widely used in petroleum,
chemical, electronic, automotive, power generation, mining,
pharmaceutical and other industries. Look forward to the
cooperation with you in the increasingly powerful of our company.
2. The Wide Application of Gas Tanks
1. The machinery manufacturing industry: gas tank can reduce the
number of frequent air compressor start. Not only can store
compressed air, but also has a stable outlet pressure, buffer and
other effects. It is commonly used in air compressor ancillary
equipment. |
2. The food industry: the main application is oil-free gas tank,
used for filling machines, blow molding machines to provide power.
Also play a pneumatic force transmission, pneumatic cooling,
pneumatic spray and so on. |
3. The textile industry: the main use of compressed air for air-jet
looms, sizing machines, dyeing machine, roving machine, suction
guns, etc. to provide clean gas power, the general use of oil-free
gas tank. |
4. The automotive industry: the tank is an indispensable part of
the automotive industry. For example, the role of gas tank in the
tire industry, including the promotion of silk curtain cutting
machine, curing machine, etc., including pneumatic mixing,
pneumatic molding and so on. |
5. The electronics industry: This is a new industry, one of the
wafer oxidation equipment, vacuum systems, pneumatic control
valves, pneumatic handling equipment, etc. need to cooperate with
the gas tank to complete the work. |
6. The environmental engineering industry: the application of a
wider range of gas storage industry, mainly for air pollution
control, solid waste treatment, sewage treatment, etc. |
7. The medical industry: the main application is the stainless
steel gas tank, oxygen tank, medical equipment and equipment often
supporting the equipment. |
8. The steel industry: including instrument gas, power execution,
equipment, cleaning, process assistance, etc., but also inseparable
from a tank industry. |
9. The power industry: the power industry: the role of gas tank,
including pneumatic conveying, dry ash transport, pneumatic
execution, and promote instrumentation equipment. |
3. Our Advantages
1 | Double-sided welding for all the connecting pipes |
2 | All the connecting pipes are sealed by plastic parts |
3 | Section design for the air inlet |
4 | Sewage valve with elbow design |
5 | Longitudinal seam, ring seam welding, double - sided submerged arc
welding |
6 | Surface treatment: sandblasting , primer (2 times), finish |
4. Standard Technology
Gas tank inspection of the technical more. Such standards include:
product standards, process standards, material standards,
materials, laboratory standards, material acceptance standards,
parts standards, process quality testing standards. Rough
statistics, about 20 more than our country. These standards are a
series of technical parameters and standards for the quality and
quality characteristics of the product, which is a measure of the
quality of the product. In China, such standards, GB (GB), line
standard (JBYB), and enterprise standards.
5. Structure Technology
The main load of the gas tank is the internal gas pressure, the
wind load and the seismic action. Wind pressure should be
considered in wind load. High-pressure spherical tank wind load
body coefficient generally desirable 0.30 ~ 0.35. The horizontal
seismic action of the wet tank includes the seismic force generated
by the sink and the weight of each tower, and the hydrodynamic
pressure caused by the vibration of the water in the tank. The
horizontal seismic action of the dry tank includes the seismic
force generated by the weight of the cylinder and the weight of the
piston. Calculate the snow load to think about the eccentric moment
caused by the local accumulation of snow in the top of the tank.
Shenjiang brand gas tank all kinds of standards are excellent.
6. Gas Tank Safety Precautions
A. Coated with a coating
Adhere to the tank Good proof of the working medium of the
container body material is corrosive, can be painted, spray or
plating and lining to stop, to prevent the media on the container
corrosion. |
Assuming that the coating is damaged, the working medium will
directly contact the vessel wall to produce corrosion. To keep the
coating intact, to always check whether the anti-self-contained, or
in the loading and installation of the container when the
attachment was scraped or crashed. Pay attention to check whether
the lining cracking or welds can leak phenomenon. Found that the
tank corrosion layer damage, it should be promptly after the repair
to continue to use. |
B. Elimination of chemical corrosion elements
Only in a certain conditions will be on the tank body material
chemical corrosion, to try to eliminate this can cause the gas tank
chemical corrosion elements. |
Such as oxygen-filled gas tank, often due to oxygen with more water
in the bottom of the container water, constitute water and oxygen
interface serious corrosion. To prevent such local corrosion, it is
best to monopolize oxygen, or in the container during the operation
of the container often discharge the water. |
The alkali crust of the steel container is caused by the
concentration and enrichment of the alkaline solution under
abnormal conditions (including equipment and process conditions).
Therefore, the pressure vessel containing dilute alkali in the
medium must take measures to eliminate the possibility of producing
dilute alkali Concentrated conditions, such as the acceptance of
leakage, the container wall rough or the presence of rust and other
porous substances. |
In the process of pressure vessel operation, to eliminate the
pressure vessel drip, run leaking not only waste of raw materials
and energy, pollution of the working environment, but also often
constitute the pressure vessel equipment corrosion, serious will
cause container damage. |
C. Maintain the gas tank during deactivation
The theory proves that many gas tank accidents are caused by
neglect of maintenance during the suspension operation. In a sense,
a poorly maintained gas tank during the deactivation period is
faster than the normal use of the container, which is due to the
fact that the deactivation of the pressure vessel is not only
corroded by the remaining medium in the container, Was corrosive by
the atmosphere. In the atmosphere, the water is not saturated with
water to a certain temperature, the water vapor will be condensed
from the air into a water film to cover the surface of the tank.
Assuming that the metal surface is rough or the surface is attached
with dust, dirt, or damage to the coating, water vapor is more
likely to precipitate and accumulate at these parts of the tank.
Nitrogen, oxygen and other gas impurities in the air and sulfur
dioxide, nitrogen oxides, hydrogen chloride, etc. can be dissolved
in the water film to form electrolyte solution, which has the
conditions of electrochemical corrosion. The conditions that affect
the corrosion are the atmospheric temperature and humidity first,
followed by the impurity composition and its content in the air,
the chemical composition of the tank wall material, the roughness
of the wall surface of the container, and the contamination. |