CN210441196U - Coiled pipe structure for boiler heat exchange - Google Patents
Coiled pipe structure for boiler heat exchange Download PDFInfo
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- CN210441196U CN210441196U CN201920802360.1U CN201920802360U CN210441196U CN 210441196 U CN210441196 U CN 210441196U CN 201920802360 U CN201920802360 U CN 201920802360U CN 210441196 U CN210441196 U CN 210441196U
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Abstract
A serpentine tube structure for boiler heat exchange comprises a plurality of straight tubes and a plurality of bent tubes, wherein two adjacent straight tubes are connected end to end through the bent tubes, the straight tubes and the smoke heating surfaces of the bent tubes are respectively provided with straight tube anti-abrasion covers and bent tube anti-abrasion covers matched with the outer surface shapes of the straight tubes and the bent tubes in a buckled mode, a stress damping device is arranged between the two adjacent straight tubes and comprises two damping positioning pads which are oppositely arranged and an elastic piece arranged between the damping positioning pads, the two damping positioning pads are respectively fixed on the outer walls of the two adjacent straight tubes, the straight tube anti-abrasion covers are arranged on the straight tubes through snap rings, the bent tube anti-abrasion covers comprise an outer anti-abrasion cover and an inner anti-abrasion cover, the outer anti-abrasion cover and the inner anti-abrasion cover are buckled and installed on the outer side and the inner side of the bent tubes, stress damping devices are arranged, and stress generated when, the anti-abrasion cover is arranged to effectively prevent high-temperature flue gas from scouring and wearing the elbow, and the elbow is well protected.
Description
Technical Field
The utility model relates to an industrial boiler technical field, concretely relates to boiler is snakelike tubular construction for heat transfer.
Background
The serpentine pipe is a heated pipe which is formed by multiple roundabouts in one plane. In industrial boilers, in order to increase the heat exchange area of the boiler and improve the heat exchange efficiency of the boiler, a serpentine pipe is mostly adopted as the main heat exchange surface of the boiler.
The structure of the serpentine pipe used at present is: the positioning device comprises a plurality of straight pipes and a plurality of bent pipes, wherein two adjacent straight pipes are connected end to end through the bent pipes, and an integral positioning block is fixedly welded between the two adjacent straight pipes. In the running process of the boiler, water passing through the coiled pipe is always in a boiling state, so that stress for shaking the coiled pipe is easily generated; because the integral positioning block is rigidly connected with the straight pipe, when the coiled pipe is subjected to the stress of shaking, the stress directly acts on the welding point at the mutual welding position of the integral positioning block and the straight pipe, the welding point at the mutual welding position of the integral positioning block and the straight pipe is loosened after a long time, and the integral positioning block is led to fall off from the outer wall of the straight pipe, so that the integral stability of the coiled pipe is reduced, and the safety of the boiler in operation is also reduced.
In the production process of a high-pressure boiler, due to the high pressure of the boiler, the serpentine pipeline for conveying the heat medium is also subjected to corresponding high pressure, when the wall thickness of the pipeline system is abraded to be lower than the wall thickness allowed by the design, the conditions of leakage, pipe explosion and the like can be caused, so that the boiler is shut down, and the loss is caused to an operation unit and a gas and electricity utilization unit.
Therefore, the above-mentioned problems are problems that should be considered and solved in designing and applying the serpentine tube.
SUMMERY OF THE UTILITY MODEL
To the problem that exists, the utility model provides an overcome the defect among the prior art, boiler heat transfer that is rational in infrastructure is with snakelike tubular construction.
The technical solution of the utility model is that: the utility model provides a coiled pipe structure for boiler heat transfer, includes a plurality of straight tubes and a plurality of return bends, links to each other end to end through the return bend between two adjacent straight tubes, the straight tube with the flue gas heating surface of return bend is buckled respectively and is equipped with straight tube abrasionproof cover and return bend abrasionproof cover rather than the outer surface shape looks adaptation, is equipped with stress damping device between two adjacent straight tubes, stress damping device is including two relative shock attenuation locating pads that set up and the elastic component of setting between the shock attenuation locating pad, two the shock attenuation locating pad is fixed respectively on the outer wall of two adjacent straight tubes, straight tube abrasionproof cover passes through the snap ring setting on the straight tube, return bend abrasionproof cover includes outside abrasionproof cover and inboard abrasionproof cover, outside abrasionproof cover and inboard abrasionproof cover lock are installed in the outside and the inboard of.
The utility model discloses a further improvement lies in: the shock absorption positioning pad is fixedly arranged on the outer wall of the straight pipe in a welding mode, and the contact surface of the shock absorption positioning pad and the straight pipe is of a circular arc-shaped structure matched with the appearance of the straight pipe.
The utility model discloses a further improvement lies in: the elastic piece comprises two elastic steel sheets and a spring fixedly arranged between the two elastic steel sheets, the elastic steel sheets are fixedly arranged on the damping positioning pad through welding respectively, and two ends of the spring are connected with the two elastic steel sheets respectively.
The utility model discloses a further improvement lies in: the straight pipe anti-abrasion cover is characterized in that the clamping rings are welded on the straight pipe anti-abrasion cover in a lap joint mode, the straight pipe is sleeved with the clamping rings, and the number of the clamping rings is not less than two.
The utility model discloses a further improvement lies in: the straight pipe anti-abrasion cover and the bent pipe anti-abrasion cover are both made of high-temperature-resistant metal materials, and the diameter and the length of the straight pipe anti-abrasion cover are matched with those of the corresponding straight pipe and bent pipe.
The utility model discloses a further improvement lies in: the whole elbow pipe anti-abrasion cover is a U-shaped pipe, and the buckling positions of the outer side anti-abrasion cover and the inner side anti-abrasion cover are welded and connected into a whole by adopting pipe chains.
The utility model has the advantages that: the stress damping device is arranged between the two adjacent straight pipes, so that stress generated when the coiled pipe shakes is reduced, the stress can not directly act on the welding position of the damping positioning pad and the straight pipes through the buffering of the elastic part, and the welding point can not loosen, so that the overall stability of the coiled pipe and the safety of boiler operation are better improved; the bend pipe anti-abrasion cover adopts the U-shaped steel plate to cover the whole bend pipe, so that the high-temperature smoke is effectively prevented from scouring and abrading the bend pipe, the bend pipe is well protected, and the working efficiency of the boiler is improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of the wear-resistant cover of the middle straight tube according to the present invention;
fig. 3 is a schematic view of the wear-resistant cover for the middle elbow pipe of the present invention;
fig. 4 is a schematic side view of the wear-resistant cover for the middle elbow pipe of the present invention;
wherein: the anti-abrasion device comprises a straight pipe 1, a bent pipe 2, a straight pipe anti-abrasion cover 3, a bent pipe anti-abrasion cover 4, a shock absorption positioning pad 5, a snap ring 6, an outer side anti-abrasion cover 7, an outer side anti-abrasion cover 8, an elastic steel sheet 9, a spring 10 and a pipe chain 11.
Detailed Description
In order to deepen the understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and embodiments, which are only used for explaining the present invention and are not limited to the protection scope of the present invention.
As shown in the figure, the serpentine tube structure for boiler heat exchange provided in this embodiment includes a plurality of straight tubes 1 and a plurality of bent tubes 2, two adjacent straight tubes 1 are connected end to end through the bent tubes 2, the smoke heating surfaces of the straight pipes 1 and the bent pipes 2 are respectively provided with a straight pipe anti-abrasion cover 3 and a bent pipe anti-abrasion cover 4 which are matched with the outer surface shapes of the straight pipes, a stress damping device is arranged between every two adjacent straight pipes 1 in the middle, the stress damping device comprises two damping positioning pads 5 which are oppositely arranged and an elastic piece arranged between the damping positioning pads 5, the two damping positioning pads 5 are respectively fixed on the outer walls of the two adjacent straight pipes 1, the straight pipe abrasion-proof cover 3 is arranged on the straight pipe 1 through a snap ring 6, the bent pipe abrasion-proof cover 4 comprises an outer side abrasion-proof cover 7 and an inner side abrasion-proof cover 8, the outer side wear-proof cover 7 and the inner side wear-proof cover 8 are oppositely arranged on the outer side and the inner side of the elbow pipe 2.
The damping positioning pad 5 is fixedly arranged on the outer wall of the straight pipe 1 in a welding mode, and the contact surface of the damping positioning pad 5 and the straight pipe 1 is of a circular arc-shaped structure matched with the appearance of the straight pipe 1. The elastic piece comprises two elastic steel sheets 9 and a spring 10 fixedly arranged between the two elastic steel sheets 9, the elastic steel sheets 9 are fixedly arranged on the two damping positioning pads 5 through welding respectively, and two ends of the spring 10 are fixedly connected with the two elastic steel sheets 9 respectively.
The straight pipe abrasion-proof cover is characterized in that the snap rings 6 are welded on the straight pipe abrasion-proof cover 3 in a lap joint mode, the snap rings 6 are sleeved on the straight pipe 1, the number of the snap rings 6 is two, the two snap rings are respectively arranged at two ends of the straight pipe 1, the straight pipe abrasion-proof cover 3 and the bent pipe abrasion-proof cover 4 are made of high-temperature-resistant metal materials, and the diameter size and the length of the straight pipe abrasion-proof cover are matched with those of the corresponding straight pipe 1 and the corresponding.
The whole U-shaped pipe of return bend abrasionproof cover 4, outside abrasionproof cover 7 with the lock department of inboard abrasionproof cover 8 adopts pipe chain 11 to weld and connects into whole, the both ends of pipe chain 11 weld respectively on outside abrasionproof cover 7 and inboard abrasionproof cover 8, and the quantity of pipe chain 11 is a plurality of, distributes at the outer fringe and the inner edge of U type return bend abrasionproof cover 4.
According to the serpentine tube structure for boiler heat exchange, the stress damping device is arranged between the two adjacent straight tubes, so that stress generated when the serpentine tube shakes is reduced, the stress can not directly act on the welding position of the damping positioning pad and the straight tubes due to the buffering of the elastic piece, and the welding point can not be loosened, so that the overall stability of the serpentine tube and the safety of boiler operation are better improved; the anti-abrasion cover is arranged outside the straight pipe and the elbow pipe, so that the flue gas is prevented from scouring the pipe, the service life of a product is prolonged, the anti-abrasion cover of the elbow pipe adopts a U-shaped steel plate to integrally cover the elbow pipe, the high-temperature flue gas is effectively prevented from scouring and wearing the elbow, a good protection effect is achieved on the elbow pipe, and the working efficiency of the boiler is improved.
It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and the utility model only describe the principle of the present invention without departing from the spirit and scope of the present invention, the present invention can also have various changes and improvements, and these changes and improvements all fall into the scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a coiled pipe structure for boiler heat transfer, includes a plurality of straight tubes and a plurality of return bends, through return bend end to end between two adjacent straight tubes, its characterized in that: the straight tube with the flue gas of return bend receives the hot side to detain respectively and is equipped with straight tube abrasionproof cover and return bend abrasionproof cover rather than the outer surface shape looks adaptation, is equipped with stress damping device between two adjacent straight tubes, stress damping device is including two damping location pads that set up relatively and the elastic component of setting between the damping location pad, two the damping location pad is fixed respectively on the outer wall of two adjacent straight tubes, the straight tube abrasionproof cover passes through the snap ring setting on the straight tube, the return bend abrasionproof cover includes outside abrasionproof cover and inboard abrasionproof cover, outside abrasionproof cover and inboard abrasionproof cover lock are installed in the outside and the inboard of return bend.
2. The serpentine tube structure for boiler heat exchange according to claim 1, wherein: the shock absorption positioning pad is fixedly arranged on the outer wall of the straight pipe in a welding mode, and the contact surface of the shock absorption positioning pad and the straight pipe is of a circular arc-shaped structure matched with the appearance of the straight pipe.
3. The serpentine tube structure for boiler heat exchange according to claim 1, wherein: the elastic piece comprises two elastic steel sheets and a spring fixedly arranged between the two elastic steel sheets, the elastic steel sheets are fixedly arranged on the damping positioning pad through welding respectively, and two ends of the spring are connected with the two elastic steel sheets respectively.
4. The serpentine tube structure for boiler heat exchange according to claim 1, wherein: the straight pipe anti-abrasion cover is characterized in that the clamping rings are welded on the straight pipe anti-abrasion cover in a lap joint mode, the straight pipe is sleeved with the clamping rings, and the number of the clamping rings is not less than two.
5. The serpentine tube structure for boiler heat exchange according to claim 1, wherein: the straight pipe anti-abrasion cover and the bent pipe anti-abrasion cover are both made of high-temperature-resistant metal materials, and the diameter and the length of the straight pipe anti-abrasion cover are matched with those of the corresponding straight pipe and bent pipe.
6. The serpentine tube structure for boiler heat exchange according to claim 1, wherein: the whole elbow pipe anti-abrasion cover is a U-shaped pipe, and the buckling positions of the outer side anti-abrasion cover and the inner side anti-abrasion cover are welded and connected into a whole by adopting pipe chains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920802360.1U CN210441196U (en) | 2019-05-30 | 2019-05-30 | Coiled pipe structure for boiler heat exchange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920802360.1U CN210441196U (en) | 2019-05-30 | 2019-05-30 | Coiled pipe structure for boiler heat exchange |
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| CN210441196U true CN210441196U (en) | 2020-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920802360.1U Active CN210441196U (en) | 2019-05-30 | 2019-05-30 | Coiled pipe structure for boiler heat exchange |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111550818A (en) * | 2020-06-10 | 2020-08-18 | 安徽池州九华发电有限公司 | Boiler afterbody flue wear proof device |
| CN112197614A (en) * | 2020-10-07 | 2021-01-08 | 张映梅 | Heat exchanger for polypropylene chemical process |
| CN113787246A (en) * | 2021-10-15 | 2021-12-14 | 中国电建集团山东电力建设第一工程有限公司 | Method for welding anti-abrasion tile of heating surface coiled pipe and coiled pipe heat exchanger |
| CN117838425A (en) * | 2024-03-07 | 2024-04-09 | 杭州英哲家禾信息科技有限公司 | Spliced medical ice cap |
-
2019
- 2019-05-30 CN CN201920802360.1U patent/CN210441196U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111550818A (en) * | 2020-06-10 | 2020-08-18 | 安徽池州九华发电有限公司 | Boiler afterbody flue wear proof device |
| CN112197614A (en) * | 2020-10-07 | 2021-01-08 | 张映梅 | Heat exchanger for polypropylene chemical process |
| CN113787246A (en) * | 2021-10-15 | 2021-12-14 | 中国电建集团山东电力建设第一工程有限公司 | Method for welding anti-abrasion tile of heating surface coiled pipe and coiled pipe heat exchanger |
| CN117838425A (en) * | 2024-03-07 | 2024-04-09 | 杭州英哲家禾信息科技有限公司 | Spliced medical ice cap |
| CN117838425B (en) * | 2024-03-07 | 2024-06-11 | 杭州英哲家禾信息科技有限公司 | Spliced medical ice cap |
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