Embedded modularized assembly water pipe fuel oil and fuel gas boiler

Abstract

The invention relates to an embedded modularized assembly water pipe fuel oil and fuel gas boiler which comprises a radiating heated face module and a convection heated face module embedded in the radiating heated face module. The radiating heated face module comprises a radiating heated face front wall, a left wall and a right wall. A structure with an O-shaped section is composed of the left wall, the right wall, a side wall lower header and a side wall upper header. The convection heated face module comprises a convection heated face front wall and a convection heated face rear wall. The convection heated face front wall is used as a radiating heated face rear wall at the same time. A U-shaped pipe-bundle-type flag-type heated face is arranged on the convection heated face rear wall. When the boiler is a boiler with a small capacity or a medium capacity, rapid assembly can be fully achieved. When the boil is a boil with a medium capacity or a large capacity, the boiler is divided into a radiating heated face segment and a convection heated face segment for isolated transportation and embedded integral assembly is carried out on spot. Modularized butt joint can be achieved without any welding, an installation period is short and operation and maintenance are simple, convenient and easy to achieve. Moreover, whole sealing performance of the whole boiler is good, heat loss is obviously reduced and heat efficiency of the boiler is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of water tube fuel gas boilers, in particular to an embedded modular assembled water tube fuel gas boiler. Background technique [0002] According to my country's energy "Twelfth Five-Year Plan" announced by the National Development and Reform Commission on October 24, 2012, my country's future natural gas consumption will experience rapid growth. From 2011 to 2015, the share of natural gas consumption will increase from the current 4.6% to 7.5%. For this purpose, my country is building or is about to build several offshore LNG supply lines in Central Asia, China-Myanmar, China-Russia, and forms a two-pronged development momentum of increasing domestic exploration and development and increasing foreign imports to solve gas sources. The coal-based energy supply energy structure will improve the deteriorating air pollution situation in my country. At the same time, this move will also greatly stimulate the equip...

AI Technical Summary

Problems solved by technology

However, after investigation, we found that most of the oil-fired gas-fired boilers currently on the market are medium and small shell-type boilers (two heating surfaces, the furnace and the smoke tube are embedded in the shell), and the shell-type boilers can only achieve 20t / The fast-installation structure of h cannot meet the development requirements of medium and large oil-fired gas-fired boilers on the market, and in my country, due to the restrictions of standards and regulations, shell-type boilers are not suitable for large-scale, and the development of medium and large-scale oil-fired gas-fired boilers in the future direction is water tube boiler

At present, although there are a small number of water tube oil-fired gas boilers on the market, most of these boilers use upper and lower drums and evaporative convection tube bundle structures, resulting in a huge workload for on-site welding, and welding personnel can only lie in the lower drum and weld upwards ( Overhead welding), not only is there always the danger of being burned by falling metal droplets, but also the on-site welding work has repeatedly challenged the limits of human survival, severely damaging the physical and mental health of welders, and a welding worker can only persist In 20 minutes, it is necessary to change personnel to enter the operation again. What is more serious is that the welding workers are welding under such harsh conditions, and it is difficult to guarantee the welding quality. Therefore, these welding joints will become a major safety hazard in the operation process, so , this structure cannot meet the requirements of fast installation, modularization and overall assembly of medium and large oil-fired gas boilers, and it cannot meet the needs of large-scale on-site module assembly and reduce the installation cycle; It is difficult to realize modular assembly production in structure, and it is difficult to reduce the huge welding workload on site. At the same time, the existence of dense convection tube bundles is not convenient for maintenance. Therefore, it is urgent to change the current old-fashioned pipe fittings. The structure of the water-tube fuel-fired gas-fired boiler meets the growing demand for high-efficiency and low-emission fuel-fired gas-fired boilers that burn clean energy, as well as fast assembly, assembly, reduced on-site welding workload, greatly shortened installation period, and convenient maintenance.

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