Rotary diaphragm deaerator, also known as thermal deaerator, uses technical analysis to reduce the oxygen content in the boiler feed water, which will prolong the service life of thermal equipment and its pipelines, especially economizers, reduce pipe burst accidents due to corrosion, and ensure the safe operation of the thermal system. The quality of its performance, the safety and stability of the operation will directly affect the safety and economic benefits of the entire power plant, which is the sacred mission of the deaerator, to be competent and well complete this mission, the deaerator must have advanced, reliable and reasonable structural guarantee.
At present, the rotary membrane deaerator on the market is divided into: water spray disc type, mechanical spray packing type, spring nozzle packing type, and rotary membrane type, which have low heat transfer coefficient and general deaeration effect.
High-efficiency thermal rotary membrane deaerator, it has a large surface area, less materials, small volume of packing layer, the effect is very good, and the supporting water storage tank reinforcing support adopts inverted T-shaped structure, high heat transfer coefficient, reasonable and reliable, to ensure safety.
Technical solution: it includes deaeration head, deaeration water tank, spray device, primary steam inlet, packing layer, secondary steam inlet, exhaust port baffle, auxiliary heating pipe, anti-cavitation device; The bottom of the deaeration water tank is provided with an auxiliary heating pipe, the outlet of the deaeration water tank is provided with an anti-cavitation device, the deaeration head is arranged at the top of the deaeration water tank, the top of the deaeration head is provided with an exhaust port baffle plate, the deaeration head is provided with a spray device, the following of the spray device is provided with a primary steam inlet and a secondary steam inlet, and a packing layer is arranged between the primary steam inlet and the secondary steam inlet, and a plurality of rotary membrane pipes are arranged on the spray device.
There are several small holes in the contact between the rotary membrane pipe and the lower tube sheet of the water chamber, which is conducive to drainage during shutdown. The film-forming situation of the spin tube is related to the position of its water inlet hole, by adjusting the position of the water inlet hole of the spin tube from the upper port, the opening of the spin tube should not be less than 150mm from the upper end of the nozzle, if it is less than 150mm, the water will overflow from the exhaust hole. The lower half of the primary steam inlet and secondary steam inlet pipes are equipped with many small steam outlet holes, which are conducive to the uniform distribution of steam during operation and the emptying of non-condensate water when out of operation.
Working principle of rotary diaphragm deaerator: two-stage heating is adopted, which is conducive to preventing steam and water impact and vibration; By adjusting the ratio of the two vapors, the best deoxidation effect can be achieved.
Beneficial effect of rotary diaphragm deaerator: it has a large surface area, less material, small volume of packing layer, and the effect is very good, and the supporting water storage tank reinforcing support adopts inverted T-shaped structure, high heat transfer coefficient, reasonable and reliable, and ensures safety.
Figure 1 is a schematic diagram of the structure of the rotary membrane deaerator.
Instructions for the specific installation steps of the rotary diaphragm deaerator:
It comprises a deaeration head 1, a deaeration water tank 2, a spray device 3, a primary steam inlet 4, a packing layer 5, a secondary steam inlet 6, an exhaust port baffle plate 7, an auxiliary heating pipe 8, and an anti-cavitation device 9; The bottom in the deaeration water tank 2 is provided with auxiliary heating pipe 8, the water outlet of deoxygenation water tank 2 is provided with anti-cavitation device 9, deaeration head 1 is arranged at the top of deoxygenation water tank 2, the top of deaeration head 1 is provided with exhaust port baffle plate 7, deaeration head 1 is provided with spray device 3, the below of spray device 3 is provided with primary steam inlet 4 and secondary steam inlet 6, and a filler layer 5 is arranged between primary steam inlet 4 and secondary steam inlet 6, and a plurality of rotary membrane pipes 3 are arranged on spray device 31。
Spinning tube 31. There are several small holes in the contact with the lower tube sheet of the water chamber, which is conducive to drainage during shutdown. Spinning tube 3The film-forming situation of 1 is related to the position of its water inlet hole, by adjusting the spinning tube 31. The position of the small hole of the water inlet from the upper port, and the rotary tube 31. The size of the opening from the upper end of the nozzle should not be less than 150mm, if it is less than 150mm, water will overflow from the exhaust hole. The lower part of the primary steam inlet 4 and the secondary steam inlet pipe 6 are all provided with a lot of steam outlet holes, which are conducive to the uniform distribution of steam during operation, and are conducive to noncondensate water emptying when out of operation.