Shandong Zhongjie Special Equipment specializes in products such as fuel (gas) boilers, organic heat carrier boilers, biomass boilers, waste heat recovery boilers, and other boiler products; vacuum insulation cryogenic pressure vessels like LNG, oxygen/nitrogen/argon tanks, and CO2 tanks; pressure vessel products including denitrification engineering equipment, heat storage and energy storage equipment, complete chemical equipment sets; and central air conditioning and HVAC equipment like ground (water) source heat pumps, air source units, water-cooled screw chillers, and air-cooled modular units. Planned products include large-scale energy centers, LNG transport vehicles, LNG tank containers, and other green energy equipment.
In industrial boiler systems, the key functional parameters of pumps include the following aspects: - Flow Rate: The flow rate of a pump refers to the volume of liquid pumped per unit of time. In industrial boilers, pumps must provide sufficient flow to meet the boiler's water requirements. The flow rate depends on the boiler's rated evaporation capacity and the design requirements of the circulating water system. - Head: The head of a pump is its ability to overcome liquid resistance and lift the fluid to a certain height. In industrial boilers, pumps must have adequate head to ensure smooth flow to all parts of the boiler, including the feed and circulating water systems. - Power: The power of a pump is the electrical or mechanical energy required to drive the pump. In industrial boilers, the power of the pump must be determined based on flow and head to meet the system's needs. - Efficiency: The efficiency of a pump is the ratio of the input energy to the output fluid energy. High-efficiency pumps can reduce energy consumption and operating costs. In industrial boilers, selecting high-efficiency pumps can improve the system's energy efficiency performance. - Stability and Reliability: Pumps in industrial boiler systems must have good operational stability and reliability. They should be able to run stably for long periods without being affected by external disturbances or fluctuations, and should be adaptable to different operating conditions. - It is necessary to select the appropriate pump based on the specific industrial boiler system and design requirements, ensuring that the functional parameters meet the system's needs. Additionally, the selection and operation of the pump must comply with relevant standards and regulations to ensure safe and reliable operation.

High exhaust gas temperature in thermal oil boilers may be due to several reasons: Incomplete combustion: If the fuel in the thermal oil boiler combustion process is not burned completely, it will result in a large amount of unburned fuel and harmful substances in the flue gas, raising the exhaust gas temperature. Possible causes include insufficient fuel supply, improper adjustment of the burner, and burner wear. Excess air: Excessive air can lower the combustion temperature, making the heat in the flue gas insufficient to reduce the flue gas temperature to a reasonable level. Reasons for excess air may include improper burner adjustment and overly open air gates. Chimney blockage: Accumulation of soot, slag, or other impurities in the chimney can obstruct flue gas flow, increasing the flue gas residence time and raising the exhaust gas temperature. Abnormal thermal oil flow: Abnormal thermal oil flow, whether too high or too low, can lead to uneven heat transfer, increasing the flue gas temperature. Boiler overheating: Improper temperature control in the thermal oil boiler can lead to overheating, raising the exhaust gas temperature. Boiler design issues: Problems in the boiler design, such as a small chimney or poor flue gas flow, can also cause excessive exhaust gas temperature. To address high exhaust gas temperature, a comprehensive inspection and analysis of the thermal oil boiler is necessary. Solutions may include adjusting burner parameters, cleaning the chimney, checking thermal oil flow and temperature control, and so on. For severe issues, boiler system modifications or repairs may be required. Regular maintenance and inspections are also crucial measures to prevent high exhaust gas temperature.

During the production welding of thermal oil boilers, the following points should be noted: - Welder Qualification: Ensure that the welders involved in the welding work have appropriate qualifications and experience, and are familiar with welding processes and operational procedures. - Welding Material Selection: Choose welding materials suitable for thermal oil boilers, ensuring their compatibility with thermal oil and high-temperature resistance. - Welding Process Control: Select the appropriate welding process based on the material and design requirements of the thermal oil boiler, such as manual arc welding, gas shielded welding, etc. Control welding parameters like current, voltage, and welding speed to ensure the quality and strength of the weld. - Welding Area Protection: During the welding process, the welding area must be protected to prevent contamination from thermal oil and welding materials. Use welding barriers, welding shields, and other equipment to ensure the cleanliness and safety of the welding area. - Post-Welding Treatment: After welding, post-treatment of the weld is required, such as slag removal, grinding, and cleaning, to ensure the flatness and surface quality of the weld. - Welding Quality Inspection: Conduct welding quality inspections, including visual examination of the weld, dimensional measurements, and non-destructive testing, to ensure the welding quality meets requirements. - Safety Measures: Pay attention to safety measures during the welding process, such as wearing protective eyewear, gloves, fire-resistant clothing, etc., to ensure the safety of welding operations. - It is important to follow relevant standards and specifications during the welding process to ensure the quality and safety of the welding. If unsure about how to perform welding or if there are potential safety hazards, seek advice from a welding engineer or consult relevant agencies.

A gas boiler is a heating equipment that uses gas or similar fuels. It produces heat by burning the gas, heating water into steam or hot water for uses such as heating, hot water supply, or industrial production. The working principle of a gas boiler involves mixing the gas with air, igniting it to create high-temperature combustion gases, and then transferring this heat to the water through a heat exchanger, thereby increasing the water temperature. Gas boilers offer benefits such as environmental friendliness and safety and are widely used in residential, commercial, and industrial sectors.
Our company attaches great importance to technological innovation and research and development. We have one municipal-level enterprise technology center in Heze City, equipped with testing facilities for non-destructive testing, physical and chemical tests, welding tests, hydrostatic tests, etc. We possess over 600 units of various equipment such as CNC machine tools, X-ray flaw detectors, digital ultrasonic flaw detectors, mechanical property testing machines, chemical analyzers, spectrometers, tensile testing machines, and plasma welding machines. Our key products and technologies, including temperature and pressure vessel welding, biomass boiler emissions reduction, and waste heat recovery, have successively been selected for multiple Shandong Province Ministry of Industry and Information Technology science and technology projects, key provincial projects, and Heze City innovative and excellent projects. We have accumulated a total of 27 authorized utility models, 16 authorized inventions, participated in drafting 2 standards, 2 industry standards, and registered 15 trademarks. Our technical team, in collaboration with Professor Yajiang Li of Shandong University, has developed deep cryogenic container processing technology using the internationally recognized plasma arc + wire feeding argon arc welding (PAW-GTAW) technique, which has been appraised at the provincial level as reaching international standards in the field of deep cryogenic container manufacturing.
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