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Draining system for steam air heater of utility boiler

A technology for power plant boilers and air heaters, which is applied to boiler cleaning devices, combustion methods, and indirect carbon dioxide emission reductions. Save hydrophobic recovery equipment and power consumption, improve economy, and improve efficiency

Inactive Publication Date: 2010-09-29
魏熙臣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of high operation failure rate, large maintenance workload, high maintenance cost, unused drainage heat and low unit efficiency of the existing heater drainage system, and further provide a utility boiler heater Air Drain System

Method used

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  • Draining system for steam air heater of utility boiler
  • Draining system for steam air heater of utility boiler
  • Draining system for steam air heater of utility boiler

Examples

Experimental program
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specific Embodiment approach 1

[0009] Specific implementation mode one: combine figure 1 Describe this embodiment, a power plant boiler heater drainage system in this embodiment includes a heater 1, a drain pipe 2, a drain regulating valve 4, a condenser 5 and a steam supply pipe 6, the heater 1 The steam inlet header 1-1 communicates with the steam supply pipe 6, the drain header 1-2 of the heater 1 communicates with the condenser through the drain pipe 2, and the drain regulating valve 4 is arranged on the drain pipe 2.

[0010] The air heater 1 is a finned air heater, a finned air heater or a bare tube air heater, which is the prior art.

specific Embodiment approach 2

[0011] Specific implementation mode two: combination figure 1 and figure 2 To describe this embodiment, the drain system of this embodiment is further provided with a liquid flow meter 3 installed on the drain pipe 2 . With such arrangement, the liquid flow in the drain pipe 2 can be monitored. Other compositions and connections are the same as in the first embodiment.

[0012] Examples (see figure 2 ): the steam inlet header 1-1 of the air heater 1 communicates with the steam supply pipe 6, the drain header 1-2 of the air heater 1 communicates with the condenser through the drain pipe 2, and the liquid flowmeter 3 and the drain regulating valve 4 are sequentially arranged on the drain pipe 2 along the water flow direction, and the drain is directly discharged into the condenser 5 through the drain pipe 2. The liquid flow meter 3 is used to measure the drain flow, and is used to control the discharge of the deaerator in summer. steam volume. The drain regulating valve i...

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Abstract

The invention discloses a draining system for a steam air heater of a utility boiler, which relates to a draining system for a steam air heater. The invention solves the problems of the prior draining system for the steam air heater, including high operation fault rate, high maintenance workload, high maintenance cost, insufficient utilization of drainage heat and low unit efficiency. The draining system comprises the steam air heater, a draining tube, a drainage control valve, a condenser and a steam supply tube, a steam intake header of the steam air heater is communicated with the steam supply tube, a draining header of the steam air heater is communicated with the condenser through the draining tube, and the drainage control valve is arranged on the draining tube. The invention can ensure that drainage heat can be sufficiently utilized; when the water temperature is lower than the exhaust temperature of a steam turbine, water entering the condenser generates a good effect in increasing vacuum, moreover, the yield of condensed water is increased, consequently, the economical efficiency of a turboset can be increased from multiple aspects, the efficiency of the turboset is increased, and the operation fault rate is decreased. The invention is applicable to utility boilers.

Description

technical field [0001] The invention relates to a water drainage system for an air heater, in particular to a water drainage system for an air heater of a power station boiler, and belongs to the field of thermal power engineering of a power station. Background technique [0002] In thermal power plants in areas with low-temperature seasons, in order to prevent low-temperature corrosion at the bottom of the boiler due to heating, most of the boiler supply fans and primary fans are equipped with heaters. The heat source of the heaters comes from the factory steam system. Arrange the drain tank at the low position, the drain will flow to the drain tank by gravity, and then be pumped to the deaerator by the drain pump. The heater drainage system has the following problems: [0003] Question 1: Since the drainage depends on gravity, the drainage temperature is the saturation temperature corresponding to the pressure of the drainage tank. For the closed drainage tank, the temper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23L15/00F22B37/50
CPCY02E20/34
Inventor 魏熙臣魏来
Owner 魏熙臣
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