Gas steam fired steam condensing boiler and the hydraulic classification precision classification by use gas steam boiler 1, an industrial gas steam boiler: heating and the like used in industrial production. Most of the parameters for the low, low capacity boilers, the fire bed combustion and thermal efficiency is relatively low. 2, power station boilers: mainly for power generation. Most high-parameter, large-capacity boiler, firebox and allow more efficient combustion. 3, the ship's boiler: a marine power. Such boilers generally low parameters, fuel oil, the requirements of small size, light weight, easy to move more. 4, locomotive boiler: The main use of locomotive power. Lower overall parameters are small capacity boilers, fire bed combustion, requires compact, movable. Two gas steam boiler in accordance with the kind of the working fluid and an output state classification can be divided into: 1, the steam boiler: the working fluid is steam outlet. 2, hot water boiler: hot water as the working fluid outlet. 3, special working fluid boiler: export of special working fluids, such as certain organic matter. Three outlet gas steam boiler in accordance with the pressure of the working medium can be divided into: 1, pressure boiler: the outlet steam pressure 14MPA (140kgf / cm). 2, high-pressure boiler: the outlet steam pressure 10MPA (100kgf / cm). 3, sub-pressure boiler: the working fluid outlet pressure of 2.5MPa. 4, pressure in the boiler: the outlet steam pressure of 3.9MPa (39kgf / cm). 5, supercritical pressure boiler: outlet steam pressure is about 25MPa (about 250kgf / cm). 6, subcritical pressure boiler: outlet steam pressure of 17MPa (170kgf / cm?). 7, low-pressure boiler: the outlet refrigerant pressure (gauge pressure) is less than or equal to 1.3MPa (13kgf / cm). Accuracy of the hydraulic machine, determines the precision of the parts. However, only static accuracy to measure the level of accuracy of press is not very accurate. This is because the size of the mechanical strength of the press itself has a great influence on the punching accuracy. If the strength of the press itself is low, the machine will be modified such that the pressure at the instant of Ao punching pressure is reached, so that, when the above-described conditions in a static tune even good, also since the strength of the deformation caused by the sample bed, differences occur. This indicates that the accuracy of the press and has a lot of strength, and the magnitude of the intensity of the work has a great influence on the press, so that high-precision parts and punched continuous strong cold stamping, the accuracy must be selected high, and the rigidity of the press.
When the pressure of the steam fired steam condensing boiler protection small small steam boiler pressure exceeds the rated boiler steam pressure protection, the need for chain protection: is shutdown, the system stops the combustion; fire mouth can also be varied, single-stage or two-stage combustion, You can adjust the amount of oil, so the buck, to ensure the safe operation of the boiler. Fuel (gas) pressure protection and steam boiler water, as the use of multiple protection: the pressure controller typically use two pressure controller, the pressure signal converted to an electrical signal, the electromechanical converter, the function of the high pressure, or low levels of signal The electrical switching loss, external circuits or automatic control chain protection. Common pressure controller and pressure gauge, vapor pressure overpressure alarm can cut off the burner limit is reached; pressure controller adjusts single fire or dual fire burning the actual operating pressure; for large burner, the pressure may be adjusted according to the size of the size of the amount of fuel, and always maintain a stable pressure relief valve operation is the last line of defense to protect the boiler, the boiler pressure exceeds the limit, according to the set pressure relief valve design feature, the exhaust pressure relief, to ensure the normal operation of the boiler. Temperature protection temperature protection is an important procedure in the safe operation of the boiler, is particularly important for the regulation and protection of the boiler temperature steam; at the same time to regulate protective role in over-temperature hot water boilers. Conventional boiler temperature protection means is a bimetallic temperature controller.
Recently, Luoyang City, Henan Province, pollution prevention campaign of the leading group issued a document required to carry out the transformation of low nitrogen gas fired steam condensing boiler. Specific content: 10 before the end of the year, within the city steam 4 tons / hour and a gas boiler, and above all the installation of direct-fired burners low nitrogen, 3.5% oxygen in the transformation reference, more than 75% boiler load condition next, particulate matter, sulfur dioxide, nitrogen oxides emission concentration not higher than 5 mg / m, 10 mg / m, 50 mg / m. To complete the transformation of nitrogen oxide emissions monitoring, to wriggle out of the gas boiler outage low nitrogen transformation. After the new gas boiler should be installed low nitrogen burners.
How to select energy saving, gas-fired? We have to look at or listen to illustrate the introduction of natural gas fired steam condensing boiler technician in the procurement of natural gas boilers. Gas-fired steam boiler, the type of gas hot water boiler, gas conducting oil furnace, boiler different for different occasions. After determining the procurement of natural gas boiler models, need to understand the specific configuration of the boiler, configure the following criteria: 1, the main boiler is equipped with auxiliary equipment and what. 2, meters, valves and water boilers require careful examination to understand. 3, understand the control system of the boiler: boiler power electrical cabinets, power boiler control switchgear. 4, check the electrical control cabinet, console, the control system, the drive, a display, and other electrical equipment. 5, and riot unit boiler tank daily inspection. 6, boiler factory testing and commissioning. Clear cost price of natural gas boilers, installation cost of materials and installation of boiler worker costs, transportation costs and other parts.Free Chat
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