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High-pressure heater draining system

A high-pressure heater and water-repelling technology, which is applied in feed water heaters, lighting and heating equipment, preheating, etc., can solve the problems of increasing pump power consumption, increase steam extraction, avoid the impact of crowding, and improve safety margins Effect

Active Publication Date: 2014-10-22
冯伟忠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the water collected in the deaerator is boosted by the pre-pump and feed water pump and sent to the boiler, thereby increasing the power consumption of the pump

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] like figure 2 As shown, it is a specific embodiment of the present invention, including a low-pressure heater 1, a deaerator 2, a pre-pump 3, a feed water pump 4 and a high-pressure heater connected in sequence through a water supply pipeline 9; wherein, the high-pressure The heaters are divided into three stages, which are respectively the first stage high pressure heater 5, the second stage high pressure heater 6, and the third stage high pressure heater 7 along the feed water flow direction; the third stage high pressure heater 7 and the A drain pipeline 13 is set between the second-stage high-pressure heaters 6, and the drainage of the third-stage high-pressure heater 7 enters the second-stage high-pressure heater 6 through the hydrophobic pipeline 13; the second-stage high-pressure heating A drain pipe 10 is arranged between the device 6 and the outlet of the pre-pump 3, and the high-pressure heater 6 drains into the outlet of the pre-pump 3 through the drain pipe...

Embodiment 2

[0057] further, such as image 3 As shown, it is another specific embodiment of the present invention, including a low-pressure heater 1, a deaerator 2, a prepump 3, a feed water pump 4 and a high-pressure heater connected in sequence through a water supply pipeline 9; wherein, the The high-pressure heaters are divided into three stages, which are the first-stage high-pressure heater 5, the second-stage high-pressure heater 6, and the third-stage high-pressure heater 7 along the flow direction of the feed water. A drain pipe 13 is arranged between the third-stage high-pressure heater 7 and the second-stage high-pressure heater, and the drain of the third-stage high-pressure heater 7 enters the second-stage high-pressure heater through the drain pipe 13 6; a drain pipe 10 is arranged between the second-stage high-pressure heater 6 and the outlet of the pre-pump 3, and the drain of the second-stage high-pressure heater 6 is drained into the outlet of the pre-pump 3 through the d...

Embodiment 3

[0066] further, such as Figure 4 As shown, it is another specific embodiment of the present invention, including a low-pressure heater 1, a deaerator 2, a prepump 3, a feed water pump 4 and a high-pressure heater connected in sequence through a water supply pipeline 9; wherein, the The high-pressure heaters are divided into three stages, which are respectively the first-stage high-pressure heater 5, the second-stage high-pressure heater 6, and the third-stage high-pressure heater 7 along the feed water flow direction; the third-stage high-pressure heater 7 and the A drain pipe 13 is arranged between the second-stage high-pressure heater 6, and a drain pipe 11 is arranged between the second-stage high-pressure heater 6 and the first-stage high-pressure heater 5; The hydrophobicity of the high-pressure heater 7 enters the second-stage high-pressure heater 6 through the hydrophobic pipeline 13, and the hydrophobic mixture after the corresponding extraction and condensation of th...

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Abstract

The utility model discloses a gradual flow type high-pressure drainage system with a drainage pump. The system comprises a water-feeding pipeline, a booster pump, a water-feeding pump and high-pressure heaters, wherein the booster pump, the water-feeding pump and the high-pressure heaters are successively arranged on the water-feeding pipeline along a water flow direction; there are at least two stages of high-pressure heaters; the first two high-pressure heaters in the water flow direction are respectively a first stage high-pressure heater and a second high-pressure heater; and a drainage pipeline entering the outlet of the booster pump is arranged on the first stage high-pressure heater, and the drainage pump is arranged on the drainage pipeline and used for pressurizing to-be-drained water in the first stage high-pressure heater and then draining the to-be-drained water to the outlet of the booster pump. According to the utility model, a squeezing effect on subordinate steam extraction caused by water drainage of the high-voltage heaters is avoided, loss of pressure during the water drainage of the high-pressure heaters is reduced, and economical efficiency of a machine set is enhanced.

Description

technical field [0001] The invention relates to the field of power plants, in particular to a high-pressure heater drainage system of a power plant. Background technique [0002] At present, the feedwater heaters used in turbogenerators in modern large-scale power plants are mainly divided into hybrid heaters and surface heaters. Among them, the hybrid heater uses direct contact heating with steam, and its end difference is zero, which can heat water to the saturation temperature corresponding to the steam pressure, and can obtain the best thermal cycle effect, and its thermal economy is higher than that of the surface with end difference type heater. However, after using the hybrid heater, in order to allow the water to continue to flow to the boiler, each outlet of the hybrid heater must be equipped with a water pump. Moreover, the high-pressure hybrid heater is difficult to realize in terms of manufacturing process. Therefore, usually only the deaerator adopts the hybr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22D1/32
Inventor 冯伟忠
Owner 冯伟忠
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