A boiler z-shaped heating surface tube
A heating surface tube and boiler technology, which is applied to a part of the boiler, can solve the problems affecting the operation of the boiler and the superheater is easy to coke, etc., and achieve the effect of avoiding coking on the heating surface, avoiding coking and ash blocking, and uniform distribution of flue gas
Active Publication Date: 2015-10-07
昆山鹿城垃圾发电有限公司
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Problems solved by technology
In actual operation, because there is no heating surface in the third flue, the flue gas temperature in the horizontal flue is too high, which makes the superheater and other convective heating surfaces easy to coke, affecting the normal operation of the boiler
Method used
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[0009] Such as figure 1 and figure 2 As shown, a Z-shaped heating surface tube of a boiler includes an upper header 1, a lower header 2 and a pipe 3, wherein the upper header 1 and the lower header 2 are arranged on both sides, and the pipe 3 is connected between the upper header 1 and the lower header 2. Between the lower headers 2, the pipes 3 are arranged in a Z shape, and the adjacent pipes 3 are arranged in opposite directions, and the two ends of the pipes 3 communicate with the upper header 1 and the lower header 2 respectively.
[0010] In this embodiment, the two ends of the pipe 3 are respectively connected with upper and lower membrane walls 5, 6, and the two ends of the pipe 3 are connected to the upper header 1 and the lower header through the upper and lower membrane walls 5, 6. 2, the upper and lower membrane walls 5, 6 are respectively fixed and welded to the corresponding upper and lower headers 1, 2. Of course, in this embodiment, the upper and lower me...
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The invention relates to a part in a boiler, in particular to a heated surface pipe arranged in three smoke channels of the boiler and capable of increasing boiler heat absorbing quantity and reducing the temperature of smoke in a horizontal smoke channel. The pipe comprises an upper collection box, a lower collection box and pipe bodies. The upper collection box and the lower collection box are arranged on two sides, and the pipe bodies are arranged between the upper collection box and the lower collection box. The heated-surface pipe is characterized in that the pipe bodies are arranged to form a Z shape, the adjacent pipes are arranged in opposite directions, and two ends of the pipe bodies are communicated with the upper collection box and the lower collection box respectively. The heated surface pipe can be arranged in the three smoke channels of the boiler and is capable of increasing boiler heat absorbing quantity and reducing the temperature of the smoke in the horizontal smoke channel, convection heated surface coking of a superheater and the like can be avoided, and the boiler is ensured to operate normally.
Description
technical field [0001] The invention relates to a part in a boiler, in particular to a heating surface tube arranged in three flues, which can increase the heat absorption of the boiler and reduce the flue gas temperature in the horizontal flue. Background technique [0002] With the rapid development of my country's social economy and the acceleration of urbanization, urban domestic waste is increasing day by day. How to properly dispose of municipal solid waste has become a top priority. The development of waste incineration power generation has good environmental benefits, social benefits and economic benefits. At present, domestic horizontally arranged grate-type waste incineration boilers are equipped with a furnace, an ember chamber, three flues and a horizontal flue according to the flue gas flow direction. Usually no heating surface is arranged in the three flues, and convective heating surfaces such as superheaters are arranged in the horizontal flue. In actual o...
Claims
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IPC IPC(8): F23G5/44
Inventor 项光明李荣任远
Owner 昆山鹿城垃圾发电有限公司