vertical cross tube boiler is not working

vertical cross tube boiler is not working

Common circulating hot water vertical cross tube boiler is not working fault which appears to have some hot water boiler with natural circulation, the loop structure if it is poorly designed or run properly, it is prone to problems of circulation failure, such as stagnation of circulation, circulation back , soft drinks and other different hierarchical fault, seriously affect the normal operation of the boiler. A cycle arrest causes: in the same cycle, since the riser uneven heating conditions in parallel, where the heated weak strong soda mixture density greater than the density if heated mixture of soda, resulting in the less intensely heated downcomer reduce the flow rate of the inner tube, even result in stagnant phenomenon. Solution: When using the hot water boiler must be able to ensure that each of the tubes are heated uniformly, but also to ensure uniform distribution of water to the downcomer waterwall tubes, thereby ensuring smooth circulation. Second, the loop back causes: the riser parallel uneven heating, and the mixture was heated soda strong upward force is strong, the flow rate is too large, thus generating suction, the heated mixture of soda weak flow in the reverse direction; the bubbles ascending speed equal to the speed of water flowing down, the bubble will cause stagnation, severe gas plug pipe will end where the squib due to high temperature occurred. Solution: The same hot water boiler in use, to ensure that each tube is heated uniformly, but also to ensure uniform distribution of water to the downcomer waterwall tubes, thereby ensuring smooth circulation. Third, soda causes delamination: waterwall tubes disposed horizontally when the inner tube soda mixture flow rate is not high, the upper flow of steam, the water in the lower flow tube, poor thermal conductivity of the steam in the pipe, if the temperature is too high will be the upper duct burn, this phenomenon is called soda stratification. Solution: When the waterwall tubes are arranged to be inclined, the inclination angle of no less than 15 degrees. Hot water boiler During normal operation, the drop is not allowed in the steam tube phenomenon, otherwise the inner tube and water vapor collided, resulting in increased resistance to flow, reducing circulation flow, the water cycle is stopped, resulting in water wall tubes burn out for lack of water.

July 26, 2016, Beijing, China Everbright Paper Co., Ltd. and the company signed a "split 6 tons of steam condensing gas steam vertical cross tube boiler is not working contract" by the company responsible for the WNS6-1.25-YQ split condensing gas boiler steam to all production, installation and commissioning work. The product is the use of condensing technology, effective emission of harmful substances SOx, NOx, COx, is industrial boilers efficient and environmentally friendly solutions.

The reason electric water vertical cross tube boiler is not working corrosion is what electric water boiler ideal operating system should be basically tight, leak-free. Circulating water system is fixed, in the endothermic heat release process. After the water heating cycle, all the dissolved oxygen in water is absorbed iron into the oxygen-free water, it will not be serious boiler corrosion. 1, fill water out of control. Article 100 "electric water boiler Safety Supervision" states: hot water system leakage is generally less than 1% of the water capacity of the system, but some units mistaken for electric water boiler with hot water convenience. Hot water system used for bathing, washing and the like. A 2.8 megawatt electric water boilers capable of producing nearly 100 tons of water per day. 2, do not implement the "low-pressure boiler water quality standards." Clearly defined standards, when the water temperature is below 95 ℃, PH value of the circulating water should be controlled at 10-12 less, this is a very important indicator, but some units do not. However, these units pay more attention to the hardness of the water supply, some special units of the fluidized bed water treatment apparatus installed to meet the needs of supply of demineralized water. They mistakenly supply of water in accordance with standard electric water boiler steam boiler. They believe that if softened water qualified, would not have happened fouling and corrosion. 3, unacceptable heating pipe network installed, the circulating water can not be delivered to the client system. Some users in order not to be frozen, increased displacement, thermal drainage, drainage cold, thus increasing the amount of leakage. 4, is provided with the expansion tank does not match the boiler pressure. An expansion tank unit on the fourth floor, which height is less than 15 meters, but the boiler is in constant pressure 2.5kg / cm ~ 2. Thus, recharge furnace workers often work to maintain a considerable pressure index / cm2, and the conversion of water to this water. Water and electricity. 5, no boiler maintenance downtime. After the heating period, boiler stop running, temporary workers were laid off. Some boiler filled with water. Some boiler exposed to the atmosphere, the lack of necessary maintenance. Clearly stated corrosion electric water boiler for hot water heating is due to lack of user knowledge, Especially large amount of water, not only add a lot of dissolved oxygen, and complement the large amount of water, caused by overload operation and other reasons. For water treatment equipment is generally added in order to ensure the amount of water added to the system flush water of high chlorine content. When the H value is only 7-8, the hydrogen ions, oxygen and chlorine ions have activity as corrosive media. PH value of water due to the lower furnace, the higher the concentration of hydrogen ions, in the event of ulcers etching, hydrogen will react. When the presence of dissolved oxygen in water, the presence of chloride will greatly enhance the rate of corrosion of iron. It is very easy to chloride ions from water being replaced by oxygen ions, and the metal surface oxide film in the oxide film, thereby forming a soluble chloride, oxide film, to oxidation of the metal surface. In summary, the key is the hot water boiler overheating caused by electric water boiler corrosion, reduced service life.

The necessity of water pressure test before the operation of the gas-fired hot water vertical cross tube boiler is not working/ gas steam boiler

After the components of the gas hot water boiler or the gas steam boiler are installed as finished products, after long distance transportation, loading and unloading, and installation, it is inevitable that collision and damage will occur. Therefore, it is necessary to conduct a water pressure test after installation. Practice has proved that the boiler pressure can be found in the water pressure test and the corresponding measures can be taken in time to ensure the safe operation of the boiler.

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2019-11-13 · A vertical fire-tube boiler or vertical multitubular boiler is a vertical boiler where the heating surface is composed of multiple small fire-tubes, arranged vertically.. These boilers were not common, owing to drawbacks with excessive wear in service. The more common form of vertical boiler, which was very similar in external appearance, instead used a single flue and water-filled cross-tubes.

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Vertical cross-tube boiler Wikipedia. 2019-6-6 · A cross-tube boiler was the most common form of small vertical boiler. They were widely used, in the age of steam, as a small donkey boiler, for the independent power of winches, steam cranes etc.[1][2][3] The boiler has the advantage of simple robust construction, in particular requiring little regular maintenance.

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vertical cross tube two drum boiler for drinks

Vertical cross-tube boiler Wikipedia. 2019-6-6 · A cross-tube boiler was the most common form of small vertical boiler. They were widely used, in the age of steam, as a small donkey boiler, for the independent power of winches, steam cranes etc.[1][2][3] The boiler has the advantage of simple robust construction, in particular requiring little regular maintenance.

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2019-9-20 · vertical boiler: flued or fire-tube designs where the main shell is a cylinder on a vertical axis, rather than horizontal. Boilers of this external form may have a great variety of internal arrangements. vertical fire-tube boiler: a vertical multi-tube fire-tube boiler.

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