Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) holds an A-grade boiler manufacturing license, A2-grade pressure vessel manufacturing license, A2-grade pressure vessel design license, B-grade boiler installation license, and GB2/Class, GC2/Class pressure pipeline installation license, as well as an equipment and machinery installation contracting qualification. It is a member of the China Boiler and Water Treatment Association, the China Chemical Equipment Association, and the理事 member of the Shandong Equipment Manufacturing Association. The company has also passed certifications for the ISO9001 Quality Management System, ISO14001 Environmental Management System, OHSAS18001 Occupational Health and Safety Management System, and the American ASME/U2 certification.
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 an 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 inspection 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 goggles, gloves, and fire-resistant clothing, to ensure the safety of welding operations. It is important to follow relevant standards and specifications during the welding process to ensure welding quality and safety. If unsure about how to perform welding or if there are potential safety hazards, seek advice from a welding engineer or consult relevant agencies.

Before ignition, the preparation of a steam boiler involves the following steps: 1. Clean the boiler: First, clean the internal and external dirt and impurities from the boiler. Remove ash, sediment, and dirt to ensure combustion and heat exchange efficiency. 2. Check fuel supply: Inspect the fuel supply system to ensure a smooth fuel supply. Check the fuel storage tank, transport pipelines, and filters, clearing blockages and replacing damaged parts. 3. Inspect the burner: Check the operational status and cleanliness of the burner. Clean the burner's nozzle and flame detector to ensure normal operation. 4. Check the gas system: For gas boilers, inspect the gas supply system. Check the gas pipelines, valves, and pressure regulators to ensure safe and stable gas supply. 5. Check water level and pressure: Inspect the boiler's water level and pressure. Ensure the water level is within the normal range, and pressure is stable and meets requirements. Add water and adjust pressure if necessary. 6. Check safety devices: Inspect the boiler's safety devices, such as safety valves, pressure switches, and water level controllers. Ensure these devices operate normally to guarantee safe boiler operation. 7. Prepare ignition tools: Prepare the tools and equipment needed for ignition, such as matchsticks, igniters, etc. Ensure these tools work normally and are safe. When performing the above preparation tasks, follow relevant operational procedures and safety requirements to ensure safety and effectiveness. If unsure about the preparation tasks, consult an expert or the boiler manufacturer for advice.

Common faults and troubleshooting methods for gas boiler burners are as follows: No flame or unstable flame: Check if the gas supply is normal and ensure the gas valve is open. Clean the burner nozzle to ensure the passage is clear. Check if the ignition electrode is clean and free of carbon or dirt. Adjust the gas-to-air ratio to ensure the proper mixture. Incomplete combustion or black smoke: Check if the gas supply is sufficient and adjust the gas pressure. Clean the burner nozzle and combustion chamber to ensure the passage is clear. Adjust the gas-to-air ratio to ensure the proper mixture. Check for carbon or dirt in the burner and clean or replace damaged parts. Difficulty in点火 or点火 failure: Check if the ignition electrode is clean and free of carbon or dirt. Adjust the position and gap of the ignition electrode to ensure normal spark generation. Check if the ignition transformer or controller is operating properly, repair or replace damaged parts. Abnormal noise from the burner: Check if the gas supply is normal and ensure the gas valve is open. Check for loose parts in the burner and combustion chamber, tighten or replace damaged parts. Clean the burner and combustion chamber to ensure no carbon or dirt. If the above methods do not solve the problem, it is recommended to contact a gas boiler maintenance technician for inspection and maintenance. At the same time, to ensure safety, follow the relevant safety operating procedures when using a gas boiler.

Yes, thermal oil boilers generally have some self-protection features to ensure safe operation and prolong their service life. Here are some common self-protection functions: Overheat Protection: Thermal oil boilers are equipped with overheat protection devices. When the thermal oil temperature exceeds the set safe range, the device automatically cuts off the burner's gas supply to prevent the thermal oil from overheating, thereby avoiding equipment damage and safety accidents. Overpressure Protection: Thermal oil boilers also have overpressure protection devices. When the thermal oil pressure exceeds the set safe range, the device automatically cuts off the burner's gas supply to prevent the thermal oil system from exploding or leaking. Burner Automatic Control: The burners of thermal oil boilers are usually equipped with automatic control systems that can adjust the gas supply and combustion effect based on set working parameters to maintain a stable combustion state and prevent incomplete or excessive combustion. Temperature Control and Adjustment: Thermal oil boilers typically come with temperature control and adjustment devices that can automatically regulate the circulation and heating of the thermal oil based on the set working temperature, maintaining a stable working temperature and avoiding excessively high or low temperatures. Water Level Protection: Some thermal oil boilers, particularly water tube thermal oil boilers, are also equipped with water level protection devices that can monitor the water levels of the thermal oil and water. When the water level is abnormal, the device automatically cuts off the burner's gas supply to prevent dry burning and thermal oil leakage. It is important to note that while thermal oil boilers have self-protection functions, they still require regular inspections and maintenance to ensure the proper functioning and reliability of these protection devices. Moreover, operators need to understand and master the working principles and operation methods of these self-protection features to ensure safe operation.
Our company places great emphasis on technological innovation and R&D design. We have 1 municipal-level enterprise technology center in Heze City, with testing facilities for non-destructive testing, physical and chemical tests, welding tests, hydrostatic tests, etc. We are equipped with over 600 various instruments and equipment, including CNC machine tools, X-ray flaw detectors, digital ultrasonic flaw detectors, mechanical property testing machines, chemical analyzers, spectrometers, tensile testing machines, plasma welding machines, and more. Our key products and technologies such as welding for temperature and pressure vessels, biomass boiler emission reduction, and waste heat recovery have successively been selected for multiple Shandong Provincial Department of Industry and Information Technology science and technology projects, Shandong Provincial key projects, and Heze City innovative and excellent projects. We have accumulated 27 authorized utility models, 16 authorized inventions, participated in drafting 2 standards, 2 industry standards, and registered 15 trademarks. The technical team, in collaboration with Professor Yajiang Li from Shandong University, has developed deep cryogenic container processing technology using the international plasma arc + filler wire argon arc welding (PAW-GTAW) technique. The provincial-level scientific and technological achievement appraisal has confirmed that the technology level in the field of deep cryogenic container manufacturing has reached an international standard.
Choose ZJET for your custom solutions, let's create brilliance together!