CN213272689U - Rotary air preheater bypass sealing structure - Google Patents
Rotary air preheater bypass sealing structure Download PDFInfo
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- CN213272689U CN213272689U CN202021760602.4U CN202021760602U CN213272689U CN 213272689 U CN213272689 U CN 213272689U CN 202021760602 U CN202021760602 U CN 202021760602U CN 213272689 U CN213272689 U CN 213272689U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The utility model relates to a rotation air preheater specifically is a rotation air preheater bypass seal structure. The utility model provides a rotation air preheater produce the problem of bypass phenomenon of leaking out at the operation in-process. The rotary air preheater bypass sealing structure comprises an outer rotor cylinder of the rotary air preheater, a shell of the rotary air preheater, cold end sealing angle steel, hot end sealing angle steel, two cold end connecting folding edges, two hot end connecting folding edges, two cold end sealing grooves, two hot end sealing grooves, two cold end sealing strips, two hot end sealing strips, two cold end pre-tightening springs and two hot end pre-tightening springs. The utility model is suitable for a rotation air preheater.
Description
Technical Field
The utility model relates to a rotation air preheater specifically is a rotation air preheater bypass seal structure.
Background
The rotary air preheater is a flue gas tail end heat exchange device commonly adopted by large boilers of thermal power plants. In the operation process of the rotary air preheater, because a dynamic and static gap is reserved between the outer cylinder of the rotor and the shell, and an air pressure difference exists between the smoke side and the air side (the air pressure of the smoke side is smaller than that of the air side), air at the air side can leak into the dynamic and static gap through two ends of the outer cylinder of the rotor, and then leaks into the smoke side through the dynamic and static gap, a bypass air leakage phenomenon is generated, and the operation efficiency and the economical efficiency of the boiler are seriously influenced. Therefore, the rotary air preheater bypass sealing structure is needed to be invented to solve the problem of bypass air leakage in the operation process of the rotary air preheater.
Disclosure of Invention
The utility model discloses a solve rotation air preheater and produce the problem of bypass phenomenon of leaking out at the operation in-process, provide a rotation air preheater bypass seal structure.
The utility model discloses an adopt following technical scheme to realize:
the bypass sealing structure of the rotary air preheater comprises an outer cylinder of a rotor of the rotary air preheater, a shell of the rotary air preheater, cold end sealing angle steel, hot end sealing angle steel, two cold end connecting folding edges, two hot end connecting folding edges, two cold end sealing grooves, two hot end sealing grooves, two cold end sealing strips, two hot end sealing strips, two groups of cold end pre-tightening springs and two groups of hot end pre-tightening springs;
the cold end sealing angle steel is annular angle steel; one side of the cold end sealing angle steel is an annular horizontal side, and the other side of the cold end sealing angle steel is an annular upper folded edge which extends to the outer edge of the annular horizontal side; the inner edge of the upper surface of the annular horizontal edge of the cold end sealing angle steel is hermetically fixed with the cold end face of the outer cylinder of the rotor of the rotary air preheater; the hot end sealing angle steel is annular angle steel; one side of the hot end sealing angle steel is an annular horizontal side, and the other side of the hot end sealing angle steel is an annular lower folded edge which extends to the outer edge of the annular horizontal side; the inner edge of the lower surface of the annular horizontal edge of the hot end sealing angle steel is fixed with the hot end face of the outer cylinder of the rotor of the rotary air preheater in a sealing manner;
the two cold end connecting folding edges are respectively arranged at the left part of the inner edge of the cold end wall and the right part of the inner edge of the cold end wall of the shell of the rotary air preheater in an extending manner, and the two cold end connecting folding edges are both arc-shaped upper folding edges; the two hot end connecting folding edges extend to the left part of the inner edge of the hot end wall and the right part of the inner edge of the hot end wall of the shell of the rotary air preheater respectively, and the two hot end connecting folding edges are arc-shaped lower folding edges;
the two cold end sealing grooves are arc-shaped grooves which are horizontally arranged and have inward notches; the lower edges of the two cold end sealing grooves are respectively fixed with the upper edges of the two cold end connecting folding edges in a sealing manner; the two hot end sealing grooves are arc-shaped grooves which are horizontally arranged and have inward notches; the upper edges of the two hot end sealing grooves are respectively fixed with the lower edges of the two hot end connecting folding edges in a sealing manner;
the two cold end sealing strips are horizontally arranged arc strips; the two cold end sealing strips are respectively embedded in the two cold end sealing grooves in a sliding manner, and the inner side surfaces of the two cold end sealing strips respectively exceed the notches of the two cold end sealing grooves; the inner side surfaces of the two cold end sealing strips are both contacted with the outer side surface of the annular upper folded edge of the cold end sealing angle steel; the outer side surface of each cold end sealing strip is provided with N cold end assembly blind holes which are arranged along the arc direction at equal intervals; the two hot end sealing strips are horizontally arranged arc-shaped strips; the two hot end sealing strips are respectively embedded in the two hot end sealing grooves in a sliding manner, and the inner side surfaces of the two hot end sealing strips respectively exceed the notches of the two hot end sealing grooves; the inner side surfaces of the two hot end sealing strips are in contact with the outer side surface of the annular lower folded edge of the hot end sealing angle steel; the outer side surface of each hot end sealing strip is provided with N hot end assembly blind holes which are arranged along the arc direction at equal intervals;
each group of cold end pre-tightening springs comprises N compression springs which are radially arranged; two groups of cold end pre-tightening springs are respectively and vertically fixed at the bottoms of the inner grooves of the two cold end sealing grooves, and the inner ends of the two groups of cold end pre-tightening springs tightly press the bottoms of the 2N cold end assembly blind holes one by one; each group of hot end pre-tightening springs comprises N compression springs arranged in the radial direction; two groups of hot end pre-tightening springs are respectively and vertically fixed at the bottoms of the inner grooves of the two hot end sealing grooves, and the inner ends of the two groups of hot end pre-tightening springs press the hole bottoms of the 2N hot end assembly blind holes one by one;
n is a positive integer and is more than or equal to 2.
When the rotary air preheater works, the cold end sealing angle steel and the hot end sealing angle steel rotate together along with the outer cylinder of the rotor of the rotary air preheater. Under the thrust action of the two groups of cold end pre-tightening springs, the inner side surfaces of the two cold end sealing strips are always in close contact with the outer side surface of the annular upper folded edge of the cold end sealing angle steel. Under the thrust action of the two groups of hot end pre-tightening springs, the inner side surfaces of the two hot end sealing strips are always kept in close contact with the outer side surface of the annular lower folded edge of the hot end sealing angle steel. Because the common separation of cold junction angle bead, hot junction angle bead, two cold junction connection hems, two hot junction connection hems, two cold junction seal grooves, two hot junction seal grooves, two cold junction seal strips, two hot junction seal strips for the air of air side can't leak into the sound clearance through the both ends of the outer cylinder of rotor, more can't leak into the flue gas side through the sound clearance.
Based on above-mentioned process, rotation air preheater bypass seal structure through adopting brand-new structure, make the air of air side can't leak into the sound clearance through the both ends of outer cylinder of rotor, more can't leak into the flue gas side through the sound clearance, effectively avoided rotation air preheater to produce the bypass phenomenon of leaking out at the operation in-process from this to the operating efficiency and the economic nature of boiler have effectively been guaranteed.
The utility model discloses rational in infrastructure, design benefit have effectively solved rotation air preheater and have produced the problem of bypass phenomenon of leaking out at the operation in-process, are applicable to rotation air preheater.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a bottom view of fig. 1.
Fig. 3 is a top view of fig. 1.
In the figure: 1-rotor outer cylinder of rotary air preheater, 2-casing of rotary air preheater, 301-cold end seal angle steel, 302-hot end seal angle steel, 401-cold end connecting flange, 402-hot end connecting flange, 501-cold end seal groove, 502-hot end seal groove, 601-cold end seal strip, 602-hot end seal strip, 701-cold end pre-tightening spring and 702-hot end pre-tightening spring.
Detailed Description
The bypass sealing structure of the rotary air preheater comprises a rotor outer cylinder 1 of the rotary air preheater, a shell 2 of the rotary air preheater, cold end sealing angle steel 301, hot end sealing angle steel 302, two cold end connecting folding edges 401, two hot end connecting folding edges 402, two cold end sealing grooves 501, two hot end sealing grooves 502, two cold end sealing strips 601, two hot end sealing strips 602, two groups of cold end pre-tightening springs 701 and two groups of hot end pre-tightening springs 702;
the cold end sealing angle steel 301 is annular angle steel; one side of the cold end sealing angle steel 301 is an annular horizontal side, and the other side of the cold end sealing angle steel 301 is an annular upper folded edge which extends to the outer edge of the annular horizontal side; the inner edge of the upper surface of the annular horizontal edge of the cold end sealing angle steel 301 is hermetically fixed with the cold end face of the rotor outer cylinder 1 of the rotary air preheater; the hot end sealing angle steel 302 is an annular angle steel; one side of the hot end sealing angle steel 302 is an annular horizontal side, and the other side is an annular lower folded edge which extends to the outer edge of the annular horizontal side; the inner edge of the lower surface of the annular horizontal edge of the hot end sealing angle steel 302 is fixed with the hot end face of the outer cylinder 1 of the rotor of the rotary air preheater in a sealing manner;
the two cold end connecting flanges 401 are respectively arranged at the left part of the inner edge of the cold end wall and the right part of the inner edge of the cold end wall of the shell 2 of the rotary air preheater in an extending manner, and the two cold end connecting flanges 401 are both arc-shaped upper flanges; the two hot end connecting folding edges 402 are respectively arranged at the left part of the inner edge of the hot end wall of the shell 2 of the rotary air preheater in an extending manner and the right part of the inner edge of the hot end wall, and the two hot end connecting folding edges 402 are both arc-shaped lower folding edges;
the two cold end sealing grooves 501 are both arc-shaped grooves which are horizontally arranged and have inward notches; the lower edges of the two cold end sealing grooves 501 are respectively fixed with the upper edges of the two cold end connecting folding edges 401 in a sealing manner; the two hot end sealing grooves 502 are arc-shaped grooves which are horizontally arranged and have inward notches; the upper edges of the two hot end sealing grooves 502 are respectively fixed with the lower edges of the two hot end connecting folding edges 402 in a sealing manner;
the two cold-end sealing strips 601 are both horizontally arranged arc-shaped strips; the two cold end sealing strips 601 are respectively embedded in the two cold end sealing grooves 501 in a sliding manner, and the inner side surfaces of the two cold end sealing strips 601 respectively exceed the notches of the two cold end sealing grooves 501; the inner side surfaces of the two cold end sealing strips 601 are both contacted with the outer side surface of the annular upper folded edge of the cold end sealing angle steel 301; the outer side surface of each cold end sealing strip 601 is provided with N cold end assembly blind holes which are arranged along the arc direction at equal intervals; the two hot end sealing strips 602 are both horizontally arranged arc-shaped strips; the two hot end sealing strips 602 are respectively embedded in the two hot end sealing grooves 502 in a sliding manner, and the inner side surfaces of the two hot end sealing strips 602 respectively exceed the notches of the two hot end sealing grooves 502; the inner side surfaces of the two hot end sealing strips 602 are both contacted with the outer side surface of the annular lower folded edge of the hot end sealing angle steel 302; the outer side surface of each hot end sealing strip 602 is provided with N hot end assembly blind holes which are arranged along the arc direction at equal intervals;
each group of cold end pre-tightening springs 701 comprises N compression springs arranged in the radial direction; two groups of cold end pre-tightening springs 701 are respectively and vertically fixed at the bottoms of the inner grooves of the two cold end sealing grooves 501, and the inner ends of the two groups of cold end pre-tightening springs 701 press the bottoms of the 2N cold end assembly blind holes one by one; each group of hot end pre-tightening springs 702 comprises N compression springs arranged in the radial direction; two groups of hot end pre-tightening springs 702 are respectively and vertically fixed at the bottoms of the inner grooves of the two hot end sealing grooves 502, and the inner ends of the two groups of hot end pre-tightening springs 702 tightly press the bottoms of the 2N hot end assembly blind holes one by one;
n is a positive integer and is more than or equal to 2.
During specific implementation, the inner edge of the upper surface of the annular horizontal edge of the cold-end sealing angle steel 301 is welded, sealed and fixed with the cold-end face of the outer cylinder 1 of the rotor of the rotary air preheater; the inner edge of the lower surface of the annular horizontal edge of the hot end sealing angle steel 302 is welded, sealed and fixed with the hot end face of the outer cylinder 1 of the rotor of the rotary air preheater.
Although particular embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are examples only and that the scope of the present invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are all within the scope of the invention.
Claims (2)
1. The utility model provides a rotation air preheater bypass seal structure which characterized in that: the rotary air preheater comprises a rotor outer cylinder (1) of the rotary air preheater, a shell (2) of the rotary air preheater, cold end seal angle steel (301), hot end seal angle steel (302), two cold end connecting folding edges (401), two hot end connecting folding edges (402), two cold end seal grooves (501), two hot end seal grooves (502), two cold end seal strips (601), two hot end seal strips (602), two groups of cold end pre-tightening springs (701) and two groups of hot end pre-tightening springs (702);
the cold end sealing angle steel (301) is annular angle steel; one side of the cold end sealing angle steel (301) is an annular horizontal side, and the other side of the cold end sealing angle steel is an annular upper folded edge which extends to the outer edge of the annular horizontal side; the inner edge of the upper surface of the annular horizontal edge of the cold end sealing angle steel (301) is fixed with the cold end face of the outer rotor cylinder (1) of the rotary air preheater in a sealing manner; the hot end sealing angle steel (302) is annular angle steel; one side of the hot end sealing angle steel (302) is an annular horizontal side, and the other side of the hot end sealing angle steel is an annular lower folded edge which extends to the outer edge of the annular horizontal side; the inner edge of the lower surface of the annular horizontal edge of the hot end sealing angle steel (302) is fixed with the hot end face of the outer cylinder (1) of the rotor of the rotary air preheater in a sealing manner;
the two cold end connecting folding edges (401) are respectively arranged at the left part of the inner edge of the cold end wall and the right part of the inner edge of the cold end wall of the shell (2) of the rotary air preheater in an extending manner, and the two cold end connecting folding edges (401) are both arc-shaped upper folding edges; the two hot end connecting folding edges (402) are respectively arranged at the left part of the inner edge of the hot end wall of the shell (2) of the rotary air preheater in an extending manner and the right part of the inner edge of the hot end wall, and the two hot end connecting folding edges (402) are both arc-shaped lower folding edges;
the two cold end sealing grooves (501) are arc-shaped grooves which are horizontally arranged and have inward notches; the lower edges of the two cold end sealing grooves (501) are respectively fixed with the upper edges of the two cold end connecting folding edges (401) in a sealing manner; the two hot end sealing grooves (502) are arc-shaped grooves which are horizontally arranged and the notches of which are inward; the upper edges of the two hot end sealing grooves (502) are respectively fixed with the lower edges of the two hot end connecting folding edges (402) in a sealing way;
the two cold end sealing strips (601) are both horizontally arranged arc strips; the two cold end sealing strips (601) are respectively embedded in the two cold end sealing grooves (501) in a sliding manner, and the inner side surfaces of the two cold end sealing strips (601) respectively exceed the notches of the two cold end sealing grooves (501); the inner side surfaces of the two cold end sealing strips (601) are in contact with the outer side surface of the annular upper folded edge of the cold end sealing angle steel (301); the outer side surface of each cold end sealing strip (601) is provided with N cold end assembly blind holes which are arranged along the arc direction at equal intervals; the two hot end sealing strips (602) are both horizontally arranged arc-shaped strips; the two hot end sealing strips (602) are respectively embedded in the two hot end sealing grooves (502) in a sliding manner, and the inner side surfaces of the two hot end sealing strips (602) respectively exceed the notches of the two hot end sealing grooves (502); the inner side surfaces of the two hot end sealing strips (602) are in contact with the outer side surface of the annular lower folded edge of the hot end sealing angle steel (302); the outer side surface of each hot end sealing strip (602) is provided with N hot end assembly blind holes which are arranged along the arc direction at equal intervals;
each group of cold end pre-tightening springs (701) comprises N compression springs which are arranged in the radial direction; two groups of cold end pre-tightening springs (701) are respectively and vertically fixed at the bottoms of the inner grooves of the two cold end sealing grooves (501), and the inner ends of the two groups of cold end pre-tightening springs (701) tightly press the bottoms of the 2N cold end assembly blind holes one by one; each group of hot end pre-tightening springs (702) comprises N compression springs which are arranged in the radial direction; two groups of hot end pre-tightening springs (702) are respectively and vertically fixed at the bottoms of the inner grooves of the two hot end sealing grooves (502), and the inner ends of the two groups of hot end pre-tightening springs (702) are pressed against the bottoms of the 2N hot end assembly blind holes one by one;
n is a positive integer and is more than or equal to 2.
2. The rotary air preheater bypass seal structure according to claim 1, wherein: the inner edge of the upper surface of the annular horizontal edge of the cold end sealing angle steel (301) is welded, sealed and fixed with the cold end face of the outer rotor cylinder (1) of the rotary air preheater; the inner edge of the lower surface of the annular horizontal edge of the hot end sealing angle steel (302) is welded, sealed and fixed with the hot end face of the outer rotor cylinder (1) of the rotary air preheater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021760602.4U CN213272689U (en) | 2020-08-21 | 2020-08-21 | Rotary air preheater bypass sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021760602.4U CN213272689U (en) | 2020-08-21 | 2020-08-21 | Rotary air preheater bypass sealing structure |
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| Publication Number | Publication Date |
|---|---|
| CN213272689U true CN213272689U (en) | 2021-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021760602.4U Active CN213272689U (en) | 2020-08-21 | 2020-08-21 | Rotary air preheater bypass sealing structure |
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|---|---|
| CN (1) | CN213272689U (en) |
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2020
- 2020-08-21 CN CN202021760602.4U patent/CN213272689U/en active Active
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