一种空预器双相星阵拓扑宽幅密封结构
By employing a wide-width sealing sheet with a two-phase star array topology in the air preheater, the problems of insufficient strength and large thermal deformation of narrow-width sealing sheets are solved, achieving a long service life and low leakage rate of the sealing sheet, and improving the operating performance of the air preheater.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA COAL FANGCHENGANG ELECTRIC POWER CO LTD
- Filing Date
- 2025-08-11
- Publication Date
- 2026-07-17
AI Technical Summary
In the existing air preheater sealing structure, the narrow sealing strip has insufficient strength, short service life, and large hot deformation at high temperature, resulting in high air leakage rate and affecting heat exchange efficiency and operating performance.
By adopting a two-phase star array topology structure and increasing the width of the sealing sheet, the high strength characteristics of the wide sealing sheet are utilized. The wide sealing sheet is detachably fixed to the rotor radial partition through the two-phase star array connection assembly, which increases the cross-sectional area and contact area of the sealing sheet and reduces thermal deformation.
Extend the service life of the sealing strip, reduce the air leakage rate, improve the operating efficiency and stability of the air preheater, reduce energy consumption, and enhance the system's economy and environmental friendliness.
Smart Images
Figure CN224517531U_ABST
Abstract
Claims
1. A wide-width sealing structure for a two-phase star array topology of an air preheater, comprising a rotor radial partition (1) and a sector plate (2), wherein a narrow pressure plate (4) is fixed to the upper side of the rotor radial partition (1) by a first fixing bolt (3), the narrow pressure plate (4) is provided with a plurality of first adjustment holes (5), a first fixing nut (6) is fixed to the surface of the first fixing bolt (3), a narrow sealing sheet (7) is provided between the narrow pressure plate (4) and the rotor radial partition (1), the narrow sealing sheet (7) is provided with a plurality of second adjustment holes (8), the top end of the narrow sealing sheet (7) abuts against the bottom of the sector plate (2), and the first fixing bolt (3) passes through the second adjustment holes (8) and the first adjustment holes (5), characterized in that: It also includes a wide-width sealing mechanism; The wide-width sealing mechanism includes a dual-phase star array connection assembly and a wide-width sealing assembly. The wide-width sealing assembly is detachably fixed to the rotor radial partition (1) via the dual-phase star array connection assembly.
2. The dual star array topology wide span seal structure of an air preheater according to claim 1, characterized in that: The dual-phase star array connection assembly includes a threaded hole (9), which is located on the lower side of the rotor radial partition (1), and a second fixing bolt (10) is threaded into the threaded hole (9).
3. The dual star array topology wide seal structure of an air preheater according to claim 2, characterized in that: The second fixing bolt (10) passes through the slotted connecting plate (11), and a positioning nut (12) is threadedly connected to the middle of the second fixing bolt (10). The positioning nut (12) is located between the slotted connecting plate (11) and the rotor radial partition (1).
4. The dual star array topology wide-span seal structure of an air preheater according to claim 3, characterized in that: The dual-phase star array connection assembly also includes a wide pressure plate (13), on which array-type star array topology holes (14) are opened, and the second fixing bolt (10) can pass through any one of the star array topology holes (14).
5. The dual star array topology wide span seal structure of an air preheater according to claim 4, characterized in that: The wide sealing assembly includes a wide sealing sheet (15), which has several third adjustment holes (16). The second fixing bolt (10) can pass through any one of the third adjustment holes (16). The top of the wide sealing sheet (15) abuts against the bottom of the fan-shaped plate (2).