Assembly method of large-scale low-temperature multi-effect seawater desalination evaporator
An assembly method and evaporator technology, applied in evaporator/condenser, seawater treatment, general water supply saving, etc., can solve the problems of single-effect evaporators that are easy to deform and difficult to meet precision requirements, so as to improve work difficulty and prevent Cylinder deformation and the effect of ensuring machining accuracy
Inactive Publication Date: 2011-09-07
ZHONGHE SEAWATER DESALINATION ENG
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Problems solved by technology
The single-effect evaporator processed by this method has the disadvantage of being easily deformed, and it is difficult to meet the accuracy requirements of the final assembly of the equipment
Method used
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Embodiment 1
[0022] The cylinder body of the single-effect evaporator is assembled and welded with steel plates, and the error between the measured value and the theoretical value of the circumference of the two ports of the cylinder body is ≤ 15 mm, and then the cylinder body is hoisted to keep the center line of the cylinder body vertical and in the cylinder body Install reinforcement rings and saddles, manholes and connecting nozzles on the body; (2) process tube sheet holes after stacking multiple tube sheets from bottom to top, and the tube holes on each tube sheet described above are And the coaxiality error between the tube plate holes on different tube plates≤Φ1mm; (3) Assembling and welding the plurality of tube plates and tube plate support frames after the hole opening into a tube plate support assembly, Then install the tube ring in the tube plate hole, and then penetrate the heat exchange tube; (4) pull the tube plate support assembly into the predetermined position in the evap...
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Abstract
The invention discloses an assembly method of a large-scale low-temperature multi-effect seawater desalination evaporator. The method includes the following steps of: adopting a steel plate to weld the barrel of a single effect evaporator, then lifting the barrel up to keep the central line of the barrel vertical and installing a reinforcing ring, a saddle, a manhole and various connecting pipe mouths on the barrel; after stacking a plurality of tube plates from down to up, processing holes of the tube plates; with the holes cut, combining and welding the tube plates and tube plate support frames as a tube plate support assembly piece, and then installing tube coils in the holes of the tube plates to subsequently penetrate in a heat exchange tube; pulling the tube plate support assembly piece to a preset position in the barrel of the evaporator through a slide rail and then welding the support leg of the tube plate support frame with the inner wall of the barrel; installing a seawaterspray assembly part in the barrel of the evaporator; installing a catching and wiping plate at one end of the barrel of the evaporator; and preserving the heat of the barrel of the evaporator. The method ensures the processing precision and assembly precision and quickens installing progress.
Description
technical field [0001] The invention relates to an assembly method, in particular to an assembly method of a single-effect evaporator with a daily water production of more than 3,000 tons and a diameter of more than 3,000 mm. Background technique [0002] Water is the source of life and the artery of social and economic development. Although 70% of the earth is covered by water, the fresh water that people rely on for survival only accounts for 2.5% to 3% of the total water. With the change of the world environment, the increase of population, the improvement of living standards and the rapid development of industry, the whole world is facing a serious shortage of fresh water resources. The most severe water shortage is in the coastal industrial cities, where the per capita water resources are mostly less than 500m 3 , is a severe water shortage area. Water shortage has become the controlling factor of urban economic growth and development, and even the key to the sustain...
Claims
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IPC IPC(8): F25B39/00C02F1/04C02F103/08
CPCY02A20/124
Inventor 曹军瑞程映晨
Owner ZHONGHE SEAWATER DESALINATION ENG