Hot water boiler feed water speed and scale with the ability to hot water boilers are often used in hotels, hotel, baths, offices, etc., when in operation for us to be reasonable and proportional speed control of water with the following'll tell you about the boiler load capacity and the speed ratio of the belt water: a, the stronger the greater the proportional band 1 load capacity, each of the hot water boiler station changes according to the size of the load carried by the respective main regulator of the proportional band. 2, the fuel conditioning subsystem using the steam turbine power - Frequency electrohydraulic control system similar to the feedforward - feedback cascade control system. 3, the main regulator proportional regulator, the steam turbine power - frequency electro-hydraulic control system of a frequency corresponding to a difference amplifier which corresponds to droop ratio with the steam turbine, the size represents the size of the boiler with a load capacity, proportional band The larger, the stronger the boiler with a load capacity. 4, the sub-controller uses proportional-integral regulator, the steam turbine power - the power conditioner frequency electro-hydraulic control system, respectively. 5, the amount of fuel introduced into the feedback signal, and the power turbine - steam turbine introducing a pressure signal frequency electro-hydraulic control system corresponds to which function is to quickly eliminate the amount of fuel boiler spontaneous disturbance. Second, the water should not be too fast a speed, water should not be excessive speed before the start, winter is generally not less than 4h, the other seasons 2 ~ 3h, especially in the beginning of the water should be slow. 2, generally at 50-90 deg.] C water temperature, so that the temperature difference between the feedwater and the steam drum into the drum wall temperature is not more than 40 ℃. Not fully cooled, water temperature cf. drum wall temperature can be, or should be slow water velocity. 3, when the feed water entering the drum is always in contact with the first drum half wall, if the water temperature and the drum wall temperature difference is too large, the influent fast speed, upper and lower walls of the drum, the inner and outer wall will have a greater differential expansion, resulting in a large drum to additional stress, causing deformation of the drum, when severe cracks. 4, since the thick-walled drum, slow expansion, the wall of the tube is connected to the drum wall is thin, expanded rapidly. If the temperature is too high or water boiler feed water too fast, uneven expansion will cause the weld cracks, damage. Water speed before starting hot water boiler should not be excessive, with the ratio, the stronger the larger the load capacity, so the size of the master regulator may vary with the proportional load carried, for this purpose we use to control the process, to avoid accidents.
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Henan Provincial Government to respond positively to meeting the spirit of the "Blue Sky Battle Action Plan", in mid-September, the issuance of "three-year action plan for pollution prevention and control campaign of Henan Province (2018-2020 years)" ( "Program"), under provincial jurisdiction, provincial tube county (city) people's government and provincial government departments need to be strictly enforced.
A gradual reduction of the total coal consumption
1, and strictly control the total coal consumption. Strictly implement the "People's Government of Henan Province, Henan Province, on the issuance of" Thirteen Five "total coal consumption control notification program of work." Strengthen the electricity, coal, steel, chemicals, nonferrous metals, building materials and other key industries of coal consumption reduction measures to eliminate a number of energy consumption is higher than the national average of inefficient capacity.
2, to enhance coal project access threshold. In principle ban on new or expanded production capacity of pure coal, coal, iron and steel, electrolytic aluminum, cement, glass, traditional coal chemical, coke overcapacity of traditional industries, the province's non-new chemical park.
3, an alternative embodiment of the coal reduction. Strictly implement the "coal project in Henan coal consumption of alternative management (Interim) Measures", all new construction, renovation, expansion project be implemented coal coal reduction or equivalent alternative. For failure to complete the annual coal consumption reduction objectives of local, regional limits approved implementation of coal projects. In addition to cogeneration projects, the province no longer approve new production of "Thirteen Five" period coal-fired power projects.
Second, build the province's clean heating system
1, the basic realization of full coverage of urban central heating. Based on existing resources and central heating facilities, the existing large-scale heat sources and central heating pipe network in the area, in-depth investigation heating demand, and promote the rich heating capacity extends to reasonable radius and root out the potential heating, heating reduce blind spots.
2, vigorously promote clean energy for heating. Central heating pipe network coverage area, the power supply and secure place, the implementation of clean energy heating engineering, accelerate the promotion of ground source, water and air source heat pump technology, building a number of distributed energy heating project; in the natural gas pipeline network to cover the area, on the premise of the implementation of gas supply contracts, ordered the construction of gas-fired boiler room, natural gas distributed energy projects.
3, strengthen clean coal quality control. Continued to organize provincial, city, county, township (neighborhood) and village (community) scattered five coal-burning governance special inspection operations, according to the law to crack down on sales of substandard clean coal behavior.
Third, the development of industrial coal-fired facilities Chaigai
By the year 2020, and out of the basic ban coal stove cogeneration heating pipe network coverage range fired heating, drying furnace (kiln); out hearth furnace diameter of 3 meters fuels gas generator, increase fertilizer industry fixed bed coal gasifier intermittent reform efforts; focus on the use of gas furnace industrial park, they will not have to switch to natural conditions, should build a unified clean coal gas central principle; prohibition blended with high-sulfur petroleum coke.
Fourth, to promote the comprehensive improvement of coal-fired boilers
Demolition and gradually expand the boiler clean energy transformation of coal-fired range. Before the end of 2020, the province basically eliminated 35 tons of steam / h and coal-fired boilers.
Boiler Chaigai funding awards complement the implementation of the way decreasing year by year:
The completion of the coal-fired boilers Chaigai before the end of October 2018, giving 60,000 yuan / tons of steam financial awards complement;
The completion of the coal-fired boilers Chaigai before the end of October 2019, giving 40,000 yuan / tons of steam financial awards complement;
The completion of the coal-fired boiler Chaigai after the end of October 2019, no longer give financial awards complement.
Cause of the high energy consumption of electric water tube diesel fired steam boilers through a lot of practice and testing, in terms of common understanding has been great progress in the actual design and the increasingly close. Current electric steam boiler heating operation and management, mainly built housing distribution sector professional management and self-management units into two categories, in general management level is relatively low. Some good situation under professional management, self-management units are few higher level, in the most basic high energy consumption, low efficiency of the situation. In addition, the prevalence of social importance heating, and energy-saving awareness is weak, new technology, new achievements rarely used, long stay in the extensive management experience, failed to improve the refinement of scientific management. For a long time, in the development of planning, lack of comprehensive planning electric steam boiler heating, new and piece together the knowledge, housing construction must attack, dispersed along a small hot water heating boiler room became expedient to form electric steam boiler room small-scale, small electric steam boiler capacity is causing a large energy consumption congenital defects, to form two small facts, it is indeed closely related to the lack of unified planning, and piece together the transformation because it is difficult to avoid unplanned blind. In the past, a considerable period of time, due to various heating design emphasis on safety considerations, the design heat load calculation results are generally much larger than the actual value required, so multi-radiator, electric steam boilers, large pumps, large diameter, first world situation formation of large horse-drawn cart, low-load, high-volume operation is widespread. This is due to the mismanagement of the designer heating operation, fireman low level of technology factors affecting heating do not know enough to worry about heating is not, will not dare to cut down the heat load, resulting in equipment is still too large, creating a vicious cycle.Free Chat
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