What are the three main reasons for the unsatisfactory application effect of semi volumetric heat exchanger
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1. The structure of the semi volumetric heat exchanger is unreasonable: the semi volumetric heat exchanger must be assembled according to the actual application needs of users and project working conditions when it leaves the factory in accordance with the national requirements. In order to save costs, some manufacturers do not lead the team according to the national requirements., The heat exchanger can only achieve the effect of heat conversion and follow the law of energy conductivity. The heat released from the hot side is equal to the heat absorbed by the cold side. Generally, the heat from the heating system on the hot side is taken away by the cooling water on the cold side that does not meet the requirements. If the water volume and water temperature are not good, the temperature on the hot side will not drop, so no matter how big the heat exchanger is, the effect will be poor.
Dalian Jinding Petrochemical Machinery Co., Ltd.
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The company covers an area of 135,000 m2 and a building area of 48807 m2. There are more than 500 employees and 35 engineers and technicians engaged in pressure vessel work. Among them, 19 are middle and senior engineers, and 96 are welders holding pressure welding qualification certificates for special equipment. There are 459 main equipments, including 2 1500 ton hydraulic presses, 1 2000 ton hydraulic presses, 4 20-120 mm plate rolling machines, 19 3-75 ton cranes, 4 overall heat treatment equipments, and the Sparter direct reading spectrometer imported from Germany for physical and chemical tests. The non-destructive testing equipment is complete and safe, which meets the requirements of manufacturing and installation.
What certificates has Jinding petroleum obtained?
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Our company has successively obtained the A2 / A3 class pressure vessel design, manufacturing, field assembly and welding license issued by the General Administration of quality supervision, inspection and Quarantine of the people's Republic of China, with the license numbers of ts1210184-2016 and ts2210443-2017 respectively; the GC2 class pressure pipeline installation, transformation and maintenance license issued by Dalian Municipal Bureau of quality and technical supervision, with the license numbers of ts3821331-2019; and the ASME authorized by the American Society of mechanical engineers U. U2 certificate; the work safety license issued by Liaoning Provincial Department of housing and urban rural development, with the license number of (Liaoning) JZ safety license [2014] 008960; the grade III professional contracting of mechanical and electrical equipment installation engineering, with the license number of b3184021028206, issued by Dalian Urban Rural Construction Commission, has obtained the ISO9001 quality management system certification and OHSAS18001 occupational health and safety management system certification ISO14001 environmental management system certification.
The company designs, manufactures and installs spherical tanks of various specifications and models
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The company's design, manufacturing and installation capacity is more than 40000 tons / year. Up to now, the company has designed, manufactured and installed more than 1800 spherical tanks of various specifications and models. Our products are all over the country. In recent years, we have joined the construction of Sinopec, PetroChina, CNOOC, Shenhua and other major construction projects in China, providing a large number of steel spherical tanks.
Manufacturing process requirements and material selection of pressure vessels
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Pressure vessels are pressure vessels that may have an explosion and other hazardous accidents. Pressure vessel containing medium special (flammable, explosive, toxic, corrosion, etc.) once the accident, the destruction of power, the impact is also great. In order to improve the safety of the pressure vessel, to ensure the normal production and construction, the company must carry out the production of product knowledge training.
Improvement of low temperature pressure vessel
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Low temperature operation of pressure vessel with decreasing temperature, the container used steel and its weld will change from ductile brittle state, the compression element in tensile stress under the action of stress levels below the yield strength of the material, or less than the allowable stress under the condition of sudden brittle fracture. After this break, no or only minimal local plastic deformation, but no overall yield, imperceptible in daily life, but often a catastrophic accident, and even pose a great threat to the safety in production. Therefore, compared with the non cryogenic pressure vessel, the design, manufacture and inspection of low temperature pressure vessel are more strict.
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