CN211717242U - Anti-welding finned tube - Google Patents
Anti-welding finned tube Download PDFInfo
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- CN211717242U CN211717242U CN201922414988.7U CN201922414988U CN211717242U CN 211717242 U CN211717242 U CN 211717242U CN 201922414988 U CN201922414988 U CN 201922414988U CN 211717242 U CN211717242 U CN 211717242U
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- tube
- comb teeth
- base
- finned tube
- fins
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Abstract
The utility model discloses an anti-welding finned tube, which comprises a base tube, wherein the base tube is in a circular tube shape; the fins are sleeved on the outer wall of the base tube and connected with the base tube in a laser welding mode; the clamping piece comprises a connecting rod, comb teeth and semi-rings, the semi-rings are connected to two ends of the connecting rod, the comb teeth are arranged on one side of the connecting rod, and the comb teeth correspond to the fins at intervals one by one; the clamping pieces are arranged in a pair, and the two clamping pieces are clamped on two sides of the base pipe and locked. The utility model discloses a clamping piece is fixed the fin, simple structure, and is fixed effectual.
Description
Technical Field
The utility model relates to a radiating element technical field, concretely relates to anticreep welds finned tube.
Background
The spiral finned tube economizer is one of important ways for expanding the heating surface of a boiler economizer part, and overcomes the defects of small heat exchange effect, serious abrasion, short service life and the like of a light tube economizer. Compared with a light pipe type economizer, the spiral finned pipe type economizer can greatly expand the heat exchange area, so that the heat transfer area of the economizer is increased, the size is reduced, the structure is compact, and the heat transfer effect is enhanced. As the flue gas forms a boundary layer when flowing through the finned tube, vortexes are generated, and flying ash particles have few chances of impacting the tube wall, the flue gas is not easy to accumulate dust and block dust, the flue gas resistance is small, and the abrasion loss is reduced.
At present, finned tubes used in boiler heat exchangers of domestic power plants are manufactured by winding and welding thin steel strips on steel tubes by adopting a welding technology. Therefore, the thermal resistance of the welding part is large in the heat conduction process, and the welding part is easy to be detached after long-term use, so that the service life is influenced.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide an anti-solderability finned tube adopts the clamping piece to fix the fin, simple structure, and is fixed effectual.
In order to solve the technical problem, the utility model provides an anti-solderability finned tube, include
The base pipe is in a circular pipe shape;
the fins are sleeved on the outer wall of the base tube and connected with the base tube in a laser welding mode;
the clamping piece comprises a connecting rod, comb teeth and semi-rings, the semi-rings are connected to two ends of the connecting rod, the comb teeth are arranged on one side of the connecting rod, and the comb teeth correspond to the fins at intervals one by one; wherein the content of the first and second substances,
the clamping pieces are provided with a pair, and the two clamping pieces are clamped on two sides of the base pipe and locked.
Furthermore, the half rings are connected with connecting flanges extending outwards, and the connecting flanges of the two half rings are combined into a whole through bolts, inserted bayonets or other modes.
Further, the inner diameter of the semi-ring is larger than the inner diameter of the base pipe and smaller than the outer diameter of the base pipe.
Furthermore, the inner surface of the semi-ring is provided with a non-slip mat.
Furthermore, the fins are annular cooling fins, the fins are arranged in a plurality and are arranged in parallel, and the plane where the comb teeth are located is axially vertical to the base pipe.
Furthermore, the fins are spirally arranged around the outer wall of the base pipe along a preset path, and the plane where the comb teeth are located and the axial direction of the base pipe form a preset angle.
Further, the length of the comb teeth is smaller than the height of the fins.
Furthermore, the end part of the comb tooth is provided with a connecting groove, and the dust removal block is connected with the connecting groove through a connecting block.
Further, the base pipe is made of 316 stainless steel.
The utility model discloses a beneficial effect that anti-split welding finned tube compares with prior art is, adopts the clamping piece to fix the fin, simple structure, and is fixed effectual.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic view of the clip structure of the present invention;
fig. 3 is a schematic view of the comb structure of the present invention.
Detailed Description
The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.
Referring to fig. 1, for the purpose of illustrating an embodiment of the anti-welding fin 2 tube of the present invention, the fin 2 tube of the present embodiment includes a base tube 1, the base tube 1 is in a circular tube shape, and the base tube 1 is made of 316 stainless steel for ensuring the purity of a water source flowing from the base tube 1. Fin 2, fin 2 the cover is located 1 outer wall of parent tube, fin 2 adopts laser welding's mode to be connected with parent tube 1, adopts laser welding, has preserved the primitive performance of material, and the laser beam jets into along the position slope of parent tube 1 and the handing-over of fin 2 during laser welding, makes 2 bottoms of fin and the welding of parent tube 1 level and smooth, and no fold, the welding rate is high. In order to enable the welded fin 2 to be tightly connected with the base tube 1, the fin 2 tube in the embodiment further comprises clamping pieces 3, and the clamping pieces 3 clamp the fin 2 on the base tube 1 from two sides of the fin 2 tube.
Referring to fig. 2, the clip 3 includes a connecting rod 31, comb teeth 32 and half rings 33, the half rings 33 are connected to two ends of the connecting rod 31, the comb teeth 32 are disposed on one side of the connecting rod 31, the comb teeth 32 are in one-to-one correspondence with the intervals of the fins 2, the comb teeth 32 are clamped at the intervals of the fins 2, the half rings 33 are sleeved on the outer wall of the base tube 1, and when the positions of the half rings 33 are fixed, the fins 2 are fixed due to the intervals and the blocking of the comb teeth 32. For the position of fixed semi-ring 33, wherein, clamping piece 3 is provided with a pair ofly, two clamping piece 3 centre gripping in 1 both sides of parent tube and locking, two semi-rings 33 make up into a whole ring, and the lock is locked at 1 outer wall of parent tube, and the position of clamping piece 3 is fixed, and fin 2 is pressed from both sides tightly to the direction of parent tube 1, guarantees that fin 2 is connected closely with parent tube 1. In order to lock the two half rings 33, the half rings 33 are connected with connecting flanges 34 extending outwards, and the connecting flanges 34 of the two half rings 33 are combined into a whole through bolts, inserted bayonets or other methods.
As a preferable technical solution of this embodiment, the inner diameter of the half rings 33 is larger than the inner diameter of the base tube 1 and smaller than the outer diameter of the base tube 1, when the two half rings 33 are fastened together, they can be tightly connected to the base tube 1, the distance from the tops of the comb teeth to the central axis of the finned tube is smaller than the radius of the fins, and when the two clamping pieces are locked, the connecting rod applies a force toward the center of the base tube 1 to the fins 2, thereby achieving the purpose of clamping the fins 2. Further, in order to prevent the half ring 33 from moving axially along the base pipe 1, the inner surface of the half ring 33 is provided with a non-slip pad 35.
The utility model discloses an in the embodiment one, fin 2 is the annular fin, fin 2 is provided with a plurality ofly, and is a plurality of fin 2 parallel arrangement, fin 2 place plane perpendicular and parent tube 1 axial in this kind of setting mode, interval between fin 2 is because connecting rod 31 is on a parallel with parent tube 1 axial setting equally, consequently, broach 32 place plane with parent tube 1 axial is perpendicular, broach 32 can cooperate with the interval between fin 2.
The utility model discloses a further embodiment, fin 2 centers on along predetermined route the outer wall spiral setting of parent tube 1 because fin 2 spiral setting, consequently there is the contained angle between fin 2 place plane and parent tube 1 axial, for the interval cooperation between guaranteeing broach 32 can and fin 2, in this embodiment broach 32 place plane with parent tube 1 axial is predetermined angle setting.
Referring to fig. 1 and 3, the length of the comb teeth 32 is smaller than the height of the fins 2, so the comb teeth 32 obstruct the top of the upper fins 2, and there is a gap between the end of the comb teeth 32 and the base tube 1, i.e. the space between the fins 2 is communicated, which does not affect the flow of flue gas. Further, in order to facilitate cleaning of the fin 2 tube, the end of the comb teeth 32 is provided with a connecting groove 36, and a dust removing block 38 is connected with the connecting groove 36 through a connecting block 37. The connection of the two half rings 33 is loosened, so that the clamping pieces 3 can rotate around the fins 2, and the dust removing blocks 38 can clean the fins 2 in the rotating process of the clamping pieces 3 because the dust removing blocks 38 are inserted between the two adjacent fins 2.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.
Claims (9)
1. An anti-welding finned tube is characterized by comprising
The base pipe is in a circular pipe shape;
the fins are sleeved on the outer wall of the base tube and connected with the base tube in a laser welding mode;
the clamping piece comprises a connecting rod, comb teeth and semi-rings, the semi-rings are connected to two ends of the connecting rod, the comb teeth are arranged on one side of the connecting rod, and the comb teeth correspond to the fins at intervals one by one; wherein the content of the first and second substances,
the clamping pieces are provided with a pair, and the two clamping pieces are clamped on two sides of the base pipe and locked.
2. The anti-defluxing finned tube according to claim 1, wherein the half rings are connected with connecting flanges extending outwards, and the connecting flanges of the two half rings are combined into a whole by means of bolts or bayonet bayonets.
3. The weld-off preventing finned tube of claim 1 wherein the inside diameter of the half ring is larger than the inside diameter of the base tube and smaller than the outside diameter of the base tube.
4. The anti-defluxing finned tube of claim 1, wherein the inner surface of the half ring is provided with an anti-slip pad.
5. The anti-defluxing finned tube according to claim 1, wherein the fin is an annular fin, a plurality of the fins are arranged in parallel, and the plane of the comb teeth is perpendicular to the axial direction of the base tube.
6. The welding-off preventing finned tube according to claim 1 wherein the fins are spirally arranged along a predetermined path around the outer wall of the base tube, the planes of the comb teeth being arranged at a predetermined angle to the axial direction of the base tube.
7. The solder resist finned tube of claim 1 wherein the comb teeth have a length less than the height of the fin.
8. The welding resistant finned tube according to claim 7 wherein the ends of the comb teeth are provided with connecting grooves to which the dust removing block is connected by connecting blocks.
9. The de-brakeproof finned tube of claim 1 wherein the base tube is of 316 stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922414988.7U CN211717242U (en) | 2019-12-28 | 2019-12-28 | Anti-welding finned tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922414988.7U CN211717242U (en) | 2019-12-28 | 2019-12-28 | Anti-welding finned tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211717242U true CN211717242U (en) | 2020-10-20 |
Family
ID=72820099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922414988.7U Active CN211717242U (en) | 2019-12-28 | 2019-12-28 | Anti-welding finned tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211717242U (en) |
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2019
- 2019-12-28 CN CN201922414988.7U patent/CN211717242U/en active Active
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