In order to judge the quality of gas-fired boiler, the manufacturer must have a manufacturing license, and the manufacturer must also purchase the boiler product produced by the qualified manufacturer. At the same time, the strength calculation and structural design of gas-fired boiler are also examined. All gas-fired boilers are confined to pressure, while the liquid-phase furnaces of gas-fired boilers are divided into two types: pressure-bearing injection type and unconfined suction type. The component of organic heat carrier furnace should be calculated according to the current boiler strength calculation standard, and the design pressure of geotextile is 0.3 MPA for working pressure, and not less than 0.59 MPA. Second It is necessary to carry out pressure test on gas-fired boiler, when it is assembled in manufacturing unit, installed in service unit and repaired. In the case of electrically heated boiler, its pressure test is divided into hydraulic test, hydraulic test and gas tightness test. No matter the gas furnace or liquid furnace of the electric heating boiler, the hydraulic test should be carried out in the manufacturing unit, and only the hydraulic test should be carried out in the working unit, but the hydraulic test should not be carried out. For gas furnaces of electrically heated boilers, gas tightness tests should be carried out in manufacturing units and service units to check the sealing of non-welded joints. Gas-tight test methods and requirements for electrically heated boilers Proceed in accordance with the relevant provisions of the pressure vessel. Gas tightness tests are not required for liquid stoves of electrically heated boilers. At the same time, the welding quality of the electric heating boiler should be strictly controlled. Because the organic heat carrier of the electric heating boiler is easy to leak and burn, the welding requirement of the organic heat carrier furnace of the electric heating boiler is higher than that of the boiler with water as the medium. The welding quality of electric heating boiler should be strictly controlled.
About Code of Practice Code of Practice for the safe operation of the hot water boiler hot water boiler hot water boiler safe operation because of its specificity required safety practices. Understandable that the normal life and production are inseparable from the use of the hot water boiler. How hot water boiler safety issues need to be protected? 1, carefully check the work before the hot water boiler, drainage, gas pipe fittings, safety valve, pressure gauge, water level, is sensitive so that, after confirming it is safe to operate. 2, with both hands to manipulate when Sheung hand to open the door of water, whereupon the other hand the water injector and valve open, the water naturally into the furnace. When stopped, the steam valve should be closed first, then turn off the water door, switch and valve, the front face must escape to avoid soft drinks out of the accident. 3, hot water boiler in operation, inspection departments to pay attention to observe the pressure and water level. Fireman are not allowed to leave their posts without permission, when night work, avoid dozing off, more sleep deprivation, in order to avoid accidents. Hot water boiler blowdown, must be performed once per shift, adjust the water level in the sewage before, slightly higher 2/3, followed by sewage. 4, the water level table class must be flushed once. When flushing, according to established procedures, the first closure valve and open the drain valve, flush valve steam, steam at this time pay attention to the origin is blocked. Steam valve is then closed, when attention is blocked antecedents water. Flushing valve, until the water becomes steam, some a little longer, in order to guarantee no false water level. Hot water boiler coal must be checked, to prevent coal detonator explosives and other explosives thrown into the furnace, to prevent the risk of explosion. 5, to always check the temperature of the motor housing and the machinery, such as mechanical failure or an electric motor with a fever more than 60 degrees, stop testing immediately. Hot water boiler normal operation, the vapor pressure shall not exceed the operating pressure, the safety valve inspection once a week.
To comprehensively promote the prevention of air pollution control work, steadily enhance the quality of atmospheric environment, located in the northern part of Heilongjiang Province held a mobilization meeting Sunwu out of small coal-fired boilers to May 7.
Conference announced the "2019 Sunwu urban area out of 10 tons of steam per hour and coal-fired boiler embodiment."
To promote the elimination of built-up area of small coal-fired boiler work, the relevant departments should strictly follow the higher level requirements, the investigation to find out the use of coal-fired boilers and urban planning area of built-up areas, with their own reality, do a good job to implement; should attach great importance to raise awareness, according to the embodiment and objectives, and take various measures to actively promote the complete phase-out of coal-fired boilers small task; to actively publicize the relevant policies, regulations and requirements to the boiler owners, guided by the responsibility to implement, clear time node . To seek truth from facts, objective science, policy guidance, strict enforcement of the principle, in order to reduce air pollution, improve air quality and protect people's health as the goal, according to the classification regulation, departmental interaction, Duocuobingju, the overall advancement of the process steps to form a government command , business differentiation, market-driven, effective supervision, public participation in new air pollution control mechanisms, to promote the phase-out of coal-fired boilers built-up urban area.
Electric boiler electric boiler cleaning method is mainly used in place of a large area of guesthouses, hotels, colleges, factories, etc., in the course of its work, a long time after the surface or the interior will scale phenomenon, this phenomenon greatly affect the equipment, the following it'll tell you about cleaning method: 1, acid cleaning method: ① this pickling solution can not only clean up the boiler scale (except when nitrates scale, add hydrofluoric acid), and very little corrosion gas hot water boiler. ② descaling pickling process using hydrochloric acid or nitric acid, most of the cleaning. Pickling solution by adding nitric acid or hydrochloric acid was added inhibitor of the corrosion inhibitor composition. 2, the mechanical descaling method: when the electric furnace with a loose boiler scale and slag, so that the cast iron hot water boiler shutdown cooling, boiler water let go of, after washing with water, can be used flat shovel, wire brushes, and a motor milling descaling header. 3, alkali cooking cleaning law: ① alkali cooking method is simple, relatively small side effects. ② alkali cooking method of cleaning descaling, pickling cleaning effect than the difference method, but since a base boiled loose scale, so it is difficult for, may be a cooking method I with a base with hydrochloric acid cleaned scale before acid pickling deal with. Scale electric boiler efficiency is an important factor in the life and influence, in order to ensure it is safe to run the economy, the need for a reasonable scale clean-up work, so essential to get rid of scale, reduce equipment failure and reduce damage.
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