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Sealing device, rotary air preheater installed with the device, and sealing method

A technology of air preheater and sealing equipment, applied in heat exchanger sealing devices, combustion methods, heat exchange equipment, etc., can solve the problems of large pressure air leakage, carrying air leakage, and large air leakage rate of air preheater, and achieve long-term The effect of service life, long service life and small module

Inactive Publication Date: 2016-08-24
杨学让
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The present invention aims to solve the problem of high air leakage rate of the air preheater in the prior art, and provides a rotary air preheater with a sealing device and a corresponding sealing method
[0015] The invention includes the use of a plate seal to reduce the pressure difference, solve the problem of large pressure air leakage and the problem that cannot be solved by carrying air leakage
Solve the problem of dust accumulation in the preheater through the complementary effect of the sealing block and the existing steam soot blowing and gas soot blowing

Method used

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  • Sealing device, rotary air preheater installed with the device, and sealing method
  • Sealing device, rotary air preheater installed with the device, and sealing method
  • Sealing device, rotary air preheater installed with the device, and sealing method

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Effect test

Embodiment 1

[0046] Embodiment 1: A kind of sealing equipment and the air preheater that installs this sealing equipment, see figure 1 , 2 , 4, 5, 6. There are multiple compartments in the air preheater, and the sealing equipment is respectively installed in the transition positions of the flue gas area A, the secondary air area B, and the primary air area C in the air preheater. The sealing equipment According to the installation position, it includes the upper surface plate type sealing unit 2, the lower surface plate type sealing unit 4 and the side part sealing unit 5, wherein each sealing unit includes a casing, a sealing body in the casing, a weight, a connecting rod and a body fixed on the casing. The corresponding position of the connecting rod frame, the connecting rod is fixed on the connecting rod frame, with the connecting rod frame as the fulcrum, the two ends of which are respectively connected to the sealing body and the weight.

[0047] The sealing body includes a wire bru...

Embodiment 2

[0076] Embodiment 2: The principle of this embodiment is the same as that of Embodiment 1, the specific difference is that the side sealing unit is replaced by a pressure block driven by a spring. When in use, the sealing effect can be controlled by adjusting the tension of the spring.

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PUM

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Abstract

The invention relates to seal equipment, in particular to seal equipment, a rotary air pre-heater with the seal equipment and a seal method. The problem that in the prior art, the air leakage rate of an air pre-heater is high is solved. By the adoption of board type sealing for reducing pressure difference, the seal equipment solves the problem that pressure air leakage is severe. The seal equipment is installed at the transition position of a smoke region, a secondary air region and a primary air region in the air pre-heater, multiple lattice bins are arranged inside the air pre-heater, and according to the installation position, the seal equipment comprises an upper dash board type seal unit, a lower dash board type seal unit and an edge seal unit. Each seal unit comprises a shell, seal bodies, heavy punches, connecting rods and a connecting rod frame fixed to the corresponding position of a shell body. The seal bodies, the heavy punches and the connecting rods are located inside the shell. The connecting rods are fixed to the connecting rod frame, and with the connecting rod frame being a supporting point, the two ends of each connecting rod are connected with the corresponding seal body and the corresponding heavy punch respectively. The board type sealing is adopted, in this way, pressure air leakage is reduced, and carrying air leakage is reduced. Depending on multiple modules, sealing is adjusted on the basis of gravity.

Description

technical field [0001] The invention relates to a sealing device, in particular to a sealing device, a rotary air preheater installed with the device and a sealing method. Background technique [0002] Rotary air preheaters are widely used in large thermal power units due to their high heat transfer density, compact structure, corrosion resistance, long life, and low cost. [0003] The biggest feature of the rotary air preheater is that it has a large wheel-shaped rotating heating surface. Most of the rotors have a diameter of more than 10 meters, and the left and right halves are the flue gas and air channels respectively. The air side is further divided into a primary air channel and a secondary air channel. When the smoke flows through the rotor, the smoke releases heat to the heat storage element in the compartment, and the temperature of the smoke decreases; when the heat storage element rotates to the air side , and release heat to the air, increasing the temperature ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28F11/00F23L15/00
CPCY02E20/34
Inventor 杨学让
Owner 杨学让