CN220396873U - Material return pipe expansion device - Google Patents
Material return pipe expansion device Download PDFInfo
- Publication number
- CN220396873U CN220396873U CN202321493264.6U CN202321493264U CN220396873U CN 220396873 U CN220396873 U CN 220396873U CN 202321493264 U CN202321493264 U CN 202321493264U CN 220396873 U CN220396873 U CN 220396873U
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- Prior art keywords
- expansion device
- return pipe
- sealing
- sealing seat
- groups
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- 239000000463 material Substances 0.000 title description 2
- 238000007789 sealing Methods 0.000 claims abstract description 87
- 238000003466 welding Methods 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000012423 maintenance Methods 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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Abstract
The utility model belongs to the technical field of return pipes, in particular to a return pipe expansion device which comprises a return pipe, wherein an expansion device is arranged in the middle of the return pipe, welding pieces are arranged at two ends of the return pipe, first sealing seats are arranged at two ends of the expansion device, second sealing seats are arranged at two ends of the expansion device, sealing rings are arranged in the first sealing seats and the second sealing seats, connecting blocks are arranged at the upper end and the lower end of the first sealing seats, connecting blocks are arranged at the upper end and the lower end of the second sealing seats, threaded pins are arranged in threaded holes, and locking nuts are arranged on the threaded pins. The tightness of the joint of the expansion device and the return pipe is improved, and the leakage of the joint is prevented.
Description
Technical Field
The utility model relates to the technical field of return pipes, in particular to a return pipe expansion device.
Background
The return pipe is high temperature resistant stainless steel pipe, and both ends are connected with furnace body, ash bin respectively with welded mode, and an expansion device has been installed to the return pipe middle section, and when boiler during operation return pipe temperature risees to 800 ℃, and boiler load changes at any time according to the change of using the vapour volume, and the return pipe is under the effect of thermal expansion's physical principle like this, frequent compression, tensile, because of the return pipe both ends are fixed on equipment, and the stress and the displacement volume that return pipe warp all need expansion device to eliminate.
The prior art has the following problems:
1. the existing expansion device can not completely eliminate the stress and displacement caused by the deformation of the return pipe, so that the expansion device is frequently torn;
2. the existing expansion device is not tightly installed in the middle section of the return pipe, the sealing performance of the joint is poor, and the leakage of the joint of the expansion device and the return pipe is easy to occur.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides the expansion device of the return pipe, which solves the problem that the existing expansion device can not completely eliminate the stress and displacement caused by the deformation of the return pipe, so that the expansion device is frequently torn; the existing expansion device is not tightly installed in the middle section of the return pipe, the sealing performance of the joint is poor, and the problem that leakage occurs at the joint of the expansion device and the return pipe is easy to cause.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a return pipe expansion device, includes the return pipe, the return pipe middle part is provided with expansion device, the return pipe both ends are provided with the weldment, the expansion device both ends are provided with first sealing seat, the expansion device both ends are provided with the second sealing seat, be provided with the sealing washer in first sealing seat and the second sealing seat, both ends are provided with the connecting block about the first sealing seat, both ends are provided with the connecting block about the second sealing seat, be provided with the screw hole in the connecting block, threaded hole is provided with the screwed pin, be provided with lock nut on the screwed pin.
As a preferable technical scheme of the utility model, the middle part of the return pipe is fixedly connected with an expansion device, the expansion device is an elbow, and the angle between the expansion device and the vertical plane of the return pipe and the furnace body is 127 degrees.
As a preferable technical scheme of the utility model, two ends of the return pipe are fixedly connected with welding pieces, the welding pieces are provided with two groups, one end of the return pipe is welded with the furnace body, and the other end of the return pipe is welded with the ash bin.
As a preferable technical scheme of the utility model, two ends of the expansion device are movably connected with first sealing seats, the first sealing seats are provided with two groups, two ends of the expansion device are movably connected with second sealing seats, the second sealing seats are provided with two groups, sealing rings are movably connected in the first sealing seats and the second sealing seats, and the sealing rings are provided with two groups.
As a preferable technical scheme of the utility model, the upper end and the lower end of the first sealing seat are fixedly connected with connecting blocks, the upper end and the lower end of the second sealing seat are fixedly connected with connecting blocks, eight groups of connecting blocks are arranged, threaded holes are formed in the connecting blocks in a penetrating manner, and eight groups of threaded holes are formed in the connecting blocks.
As a preferable technical scheme of the utility model, threaded pins are connected in the threaded holes in a threaded manner, four groups of threaded pins are arranged, locking nuts are connected to the threaded pins in a threaded manner, four groups of locking nuts are arranged, and the threaded pins are matched with the threaded holes and the locking nuts.
Compared with the prior art, the utility model provides the return pipe expansion device, which has the following beneficial effects:
1. this return pipe expansion device, through return pipe middle part fixedly connected with expansion device, the expansion device is 127 with the angle of return pipe and stove body perpendicular for expansion device can effectively extend the horizontal and the vertical displacement that the return pipe warp and cause, absorbs the stress that expend with heat and contract with cold warp produced, thereby makes expansion device by tearing phenomenon greatly reduced, guaranteed the boiler continuous operation, reduced the maintenance volume, reduced cost of maintenance.
2. This return pipe expansion device has first sealing seat through expansion device both ends swing joint, expansion device both ends swing joint has the second sealing seat, swing joint has the sealing washer in first sealing seat and the second sealing seat, earlier with two sealing rings cover on expansion device and return pipe junction, again with first sealing seat and second sealing seat cover on the sealing washer to make connecting block and screw hole align, first sealing seat is fixed with the second sealing seat through connecting block, screw hole, threaded pin and lock nut, thereby improves the leakproofness of expansion device and return pipe junction, prevents the condition that the junction from leaking.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic view of a seal mechanism according to the present utility model;
FIG. 3 is a schematic view of the structure of the connecting block of the present utility model;
fig. 4 is a schematic view of the structure of the expansion device of the present utility model.
In the figure: 1. a return pipe; 2. an expansion device; 3. a welding member; 4. a first seal seat; 5. a second seal seat; 6. a seal ring; 7. a connecting block; 8. a threaded hole; 9. a threaded pin; 10. and (5) locking the nut.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 to 4, in the present embodiment: the utility model provides a return pipe expansion device, including return pipe 1, the 1 middle part of return pipe is provided with expansion device 2, expansion device 2 absorbs the stress that thermal expansion shrinkage warp produced, return pipe 1 both ends are provided with weldment 3, weldment 3 makes return pipe 1 both ends respectively with furnace body and ash bin welding, expansion device 2 both ends are provided with first sealing seat 4, first sealing seat 4 is fixed sealing washer 6 on return pipe 1 and expansion device 2 junction, expansion device 2 both ends are provided with second sealing seat 5, second sealing seat 5 is fixed sealing washer 6 on return pipe 1 and expansion device 2 junction, be provided with sealing washer 6 in first sealing seat 4 and the second sealing seat 5, sealing washer 6 prevents return pipe 1 and expansion device 2 junction leakage, the upper and lower both ends of first sealing seat 4 are provided with connecting block 7, the upper and lower both ends of second sealing seat 5 are provided with connecting block 7, connecting block 7 make first sealing seat 4 and second sealing seat 5 fixed connection, be provided with screw hole 8 in connecting block 7, screw hole 8 make screw 9 and 7 threaded connection, screw thread 8 internal thread 9 make two screw thread 9 make on two connecting blocks 9, 10 threaded connection.
In the embodiment, the expansion device 2 is fixedly connected to the middle part of the return pipe 1, the expansion device 2 is an elbow, and the angle between the expansion device 2 and the vertical planes of the return pipe 1 and the furnace body is 127 degrees, so that the tearing phenomenon of the expansion device 2 is greatly reduced, the continuous operation of the boiler is ensured, the maintenance amount is reduced, and the maintenance cost is reduced; the two ends of the return pipe 1 are fixedly connected with welding pieces 3, the welding pieces 3 are provided with two groups, one end of the return pipe 1 is welded with the furnace body, the other end of the return pipe 1 is welded with the ash bin, and the two ends of the return pipe 1 are respectively welded with the furnace body and the ash bin; the two ends of the expansion device 2 are movably connected with a first sealing seat 4, the first sealing seat 4 is provided with two groups, the two ends of the expansion device 2 are movably connected with a second sealing seat 5, the second sealing seat 5 is provided with two groups, sealing rings 6 are movably connected in the first sealing seat 4 and the second sealing seat 5, the sealing rings 6 are provided with two groups, and the sealing rings 6 are fixed at the joint of the return pipe 1 and the expansion device 2; the upper end and the lower end of the first sealing seat 4 are fixedly connected with connecting blocks 7, the upper end and the lower end of the second sealing seat 5 are fixedly connected with connecting blocks 7, eight groups of connecting blocks 7 are arranged, threaded holes 8 are formed in the connecting blocks 7 in a penetrating mode, and eight groups of threaded holes 8 are formed in the connecting blocks; threaded pin 9 is connected with threaded hole 8 internal thread, and threaded pin 9 is provided with four groups, and threaded pin 9 is last to be connected with lock nut 10, and lock nut 10 is provided with four groups, and threaded pin 9 and threaded hole 8 and lock nut 10 assorted make first seal seat 4 and second seal seat 5 fixed connection.
The working principle and the using flow of the utility model are as follows: the operator is through 1 middle part fixedly connected with expansion device 2 of return pipe, expansion device 2 is the return bend, the angle of expansion device 2 and return pipe 1 and stove body perpendicular is 127, make expansion device 2 can effectively extend the horizontal and the vertical displacement that return pipe 1 warp caused, absorb the stress that expansion with heat and contraction with cold warp produced, thereby make expansion device 2 by tearing phenomenon greatly reduced, boiler continuous operation has been guaranteed, the maintenance volume has been reduced, cost of maintenance has been reduced, two sealed snare 6 are on expansion device 2 and return pipe 1 junction, again with first sealing seat 4 and second sealing seat 5 cover on sealing washer 6, and make connecting block 7 and screw hole 8 align, first sealing seat 4 is fixed with second sealing seat 5 through connecting block 7, screw hole 8, threaded pin 9 and lock nut 10, thereby improve the leakproofness of expansion device 2 and return pipe 1 junction, prevent the condition that the leakage appears in junction through return pipe 1 both ends fixedly connected with welding piece 3, make return pipe 1 both ends respectively with ash bin welding.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (6)
1. A return tube expansion device, characterized in that: including return tube (1), return tube (1) middle part is provided with expansion device (2), return tube (1) both ends are provided with weldment (3), expansion device (2) both ends are provided with first sealing seat (4), expansion device (2) both ends are provided with second sealing seat (5), be provided with sealing washer (6) in first sealing seat (4) and second sealing seat (5), both ends are provided with connecting block (7) about first sealing seat (4), both ends are provided with connecting block (7) about second sealing seat (5), be provided with screw hole (8) in connecting block (7), be provided with threaded pin (9) in screw hole (8), be provided with lock nut (10) on threaded pin (9).
2. A return tube expansion device according to claim 1, wherein: the middle part of the return pipe (1) is fixedly connected with an expansion device (2), the expansion device (2) is an elbow, and the angle between the expansion device (2) and the vertical plane of the return pipe (1) and the furnace body is 127 degrees.
3. A return tube expansion device according to claim 1, wherein: the two ends of the return pipe (1) are fixedly connected with welding pieces (3), the welding pieces (3) are provided with two groups, one end of the return pipe (1) is welded with the furnace body, and the other end of the return pipe (1) is welded with the ash bin.
4. A return tube expansion device according to claim 1, wherein: the expansion device is characterized in that first sealing seats (4) are movably connected to two ends of the expansion device (2), two groups of first sealing seats (4) are arranged, second sealing seats (5) are movably connected to two ends of the expansion device (2), two groups of second sealing seats (5) are arranged, sealing rings (6) are movably connected to the first sealing seats (4) and the second sealing seats (5), and the two groups of sealing rings (6) are arranged.
5. A return tube expansion device according to claim 1, wherein: the utility model discloses a sealing device for a water heater, including first sealing seat (4), second sealing seat (5), connecting block (7) are fixedly connected with at both ends about first sealing seat (4), both ends fixedly connected with connecting block (7) about second sealing seat (5), connecting block (7) are provided with eight groups, run through in connecting block (7) and set up threaded hole (8), threaded hole (8) are provided with eight groups.
6. A return tube expansion device according to claim 1, wherein: threaded hole (8) internal thread connection has threaded pin (9), threaded pin (9) are provided with four groups, threaded connection has lock nut (10) on threaded pin (9), lock nut (10) are provided with four groups, threaded pin (9) and threaded hole (8) and lock nut (10) assorted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321493264.6U CN220396873U (en) | 2023-06-13 | 2023-06-13 | Material return pipe expansion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321493264.6U CN220396873U (en) | 2023-06-13 | 2023-06-13 | Material return pipe expansion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220396873U true CN220396873U (en) | 2024-01-26 |
Family
ID=89599113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321493264.6U Active CN220396873U (en) | 2023-06-13 | 2023-06-13 | Material return pipe expansion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220396873U (en) |
-
2023
- 2023-06-13 CN CN202321493264.6U patent/CN220396873U/en active Active
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