CN216201539U - Disposable corrugated compensator - Google Patents
Disposable corrugated compensator Download PDFInfo
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- CN216201539U CN216201539U CN202122164566.6U CN202122164566U CN216201539U CN 216201539 U CN216201539 U CN 216201539U CN 202122164566 U CN202122164566 U CN 202122164566U CN 216201539 U CN216201539 U CN 216201539U
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Abstract
A disposable corrugated compensator comprises a large equal-diameter outer cylinder section, a small equal-diameter outer cylinder section, a large reducing pipe, a small reducing pipe, a reinforcing cylinder section, an inner cylinder section, a corrugated pipe and a guide cylinder, wherein the two ends of the corrugated pipe are respectively connected with the inner cylinder sections, the inner side of one inner cylinder section is connected with the guide cylinder, the guide cylinder is fixedly provided with a first limiting ring, the inner cylinder section is fixedly provided with a second limiting ring, the second limiting ring is matched with the first limiting ring for limiting, the two inner cylinder sections are respectively welded on the inner sides of the large and small reducing pipes, the large reducing pipe is connected with the large equal-diameter outer cylinder section, the small reducing pipe is connected with the small equal-diameter outer cylinder section, the small equal-diameter outer cylinder section extends into the large equal-diameter outer cylinder section, the end part of the large equal-diameter outer cylinder section is welded on the small equal-diameter outer cylinder section to form a first circumferential sealing full weld joint, and the end part of the reinforcing cylinder section is welded on the small equal-diameter outer cylinder section to form a second circumferential sealing full weld joint. The compensator can greatly reduce the stress of the stressed structural member of the disposable compensator, reduce the welding deformation and prolong the fatigue life of the disposable compensator.
Description
Technical Field
The utility model relates to the technical field of compensation of town heat supply direct-buried pipelines, in particular to a disposable corrugated compensator.
Background
When the direct-buried hot water heat supply pipeline is preheated and installed, a disposable compensator is usually adopted to connect the preheating section with other adjacent preheating sections. The structural schematic diagram of the currently commonly used disposable corrugated compensator is shown in figure 1, and the disposable corrugated compensator mainly comprises an inner cylinder section, an outer cylinder section, a corrugated pipe, a ring plate and rib plates, wherein the corrugated pipe is welded with the inner connecting pipe, the ring plate is sleeved outside the inner connecting pipe, the bottom of the ring plate is welded with the inner connecting pipe in the circumferential direction, the outer side of the ring plate is welded with the outer cylinder section, the rib plates are arranged on one side of the ring plate and play a role in reinforcing the rigidity of the ring plate, the outer diameters of the outer cylinders on the left side and the right side are different to form an upper and lower lap joint structure, when a product is used, when the left outer cylinder section and the right outer cylinder section shrink and move to positions, lap joint welding seams are welded, after the lap joint welding seams of the outer cylinder sections are welded, the rib plates are arranged on the outer side of the outer cylinder sections, and two ends of the rib plates are respectively lapped on the outer sides of the left outer cylinder section and the right outer cylinder section.
The disposable corrugated compensator is different from the traditional corrugated expansion joint, does not have the function of compensating displacement after the on-site welding is finished, and only plays a role in bearing and sealing. The temperature that the pipeline was preheated the installation is less than actual operating temperature, and disposable corrugated compensator can bear compressive stress under the pipeline is in hot working condition, bears tensile stress during cold condition operating mode, for the long period safe operation of realization product, the structure need bear great tensile and compressive capacity, still needs the weld to have better fatigue resistance in addition to bear the alternating load operating mode under the long period. The existing ring plate structure has structural mutation (the connection of the inner cylinder section and the outer cylinder section is vertically transited through the ring plate), the stress at the joint of the ring plate and the outer cylinder section is large, and the welding seam at the joint is easy to generate fatigue failure in long-period operation. In addition, the lap joint of the outer shell ring is welded through the reinforcing rib plates to reinforce the strength, so that the outer shell ring of the product is locally protruded, and the heat-insulating construction of the compensator on the subsequent site is not facilitated.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model provides a disposable corrugated compensator which can greatly reduce the stress of a stressed structural member of the disposable compensator, reduce welding deformation, prolong the fatigue life of the disposable compensator, ensure the long-period safe and stable operation of the compensator and be beneficial to the field heat-insulating construction of the compensator.
In order to realize the technical purpose, the adopted technical scheme is as follows: a disposable corrugated compensator comprises a large-constant-diameter outer cylinder section, a small-constant-diameter outer cylinder section, a large reducing pipe, a small reducing pipe, a reinforcing cylinder section, an inner cylinder section, a corrugated pipe and a guide cylinder, wherein two ends of the corrugated pipe are respectively connected with an inner cylinder section, the inner side of one inner cylinder section is connected with the guide cylinder, the outer side of the tail end of the guide cylinder is fixedly provided with a first limiting ring, the inner side of the other inner cylinder section corresponding to the first limiting ring is fixedly provided with a second limiting ring, the second limiting ring is matched and limited with the first limiting ring, the two inner cylinder sections are respectively welded at the inner sides of the large reducing pipe and the small reducing pipe which are coaxially arranged, the diameter of the large reducing pipe and the diameter of the small reducing pipe are gradually increased towards the direction of the corrugated pipe, the large-diameter end of the large reducing pipe is connected with the large-constant-diameter outer cylinder section, the large-diameter reducing pipe and the large-constant-diameter outer cylinder section are integrally formed, the large-diameter end of the small reducing pipe and the constant-diameter outer cylinder section are integrally formed, the free end of the small constant-diameter outer shell ring extends into the large constant-diameter outer shell ring, a gap is formed between the free end of the small constant-diameter outer shell ring and the large constant-diameter outer shell ring, the edge of the end of the large constant-diameter outer shell ring is welded on the small constant-diameter outer shell ring to form a first circumferential sealing full weld, the end of the large constant-diameter outer shell ring is welded with a reinforcing shell ring through the first circumferential sealing full weld, and the edge of the end of the reinforcing shell ring is welded on the small constant-diameter outer shell ring to form a second circumferential sealing full weld.
The front end of the guide shell is provided with a baffle ring.
The inner cylinder section is flush with the small-diameter ends of the large reducing pipe and the small reducing pipe.
The guide shell is a straight shell section without a flange and is connected with the inner shell section through a backing ring.
The half vertex angle of the large reducing pipe and the small reducing pipe is less than 20 degrees.
The length of the small end straight edge sections of the large reducing pipe and the small reducing pipe is more than 80 mm.
The utility model has the beneficial effects that:
1. the large and small reducing pipes comprising the large and small equal-diameter outer cylinder sections are manufactured through an integral forming method, welding seams between the original reducing pipes and the outer cylinder sections are eliminated, stress is good, the anti-fatigue capacity of a structural member is improved, the inner cylinder sections and the large and small equal-diameter outer cylinder sections are connected through the large and small reducing pipes, stress concentration is reduced, the fatigue life of the disposable compensator is prolonged, and the safety of the compensator is improved;
the reinforcing rib plate outside the outer cylinder section is cancelled through the arrangement of the reinforcing cylinder section, so that the overall dimension of the structure is reduced, the welding deformation is also reduced, and the large and small constant-diameter outer cylinder sections and the large and small reducer pipes are in integrated smooth transition, so that the axial force resistance of the disposable corrugated compensator is ensured, meanwhile, the heat insulation construction of the compensator on site at the later stage is facilitated, and the practicability of the compensator is improved;
in addition, the reinforcing cylinder section is simple to manufacture, and the reinforcing cylinder section is installed outside the reducer pipe, so that the cost is low compared with the reducer pipe, and the reinforcing cylinder section is easy to sleeve; compared with the reinforcing rib plate, the installation is convenient, and the phenomenon of easy welding leakage when the number of the reinforcing rib plates is large is avoided;
increase the draft tube, play the water conservancy diversion effect when outside welding seam is inefficacy, when outside welding seam was inefficacy, the spacing ring of draft tube afterbody played tensile effect, protected the bellows, promoted the life of compensator.
2. The inner connecting pipe is flush with the inner diameter of the small end of the reducer pipe, so that the fluid resistance can be reduced, and the energy loss can be reduced.
3. The baffle ring can reduce the impact of fluid on the welding line of the guide shell, prevent the guide shell from falling off and prolong the service life of the guide shell.
Drawings
FIG. 1 is a schematic diagram of a prior art disposable compensator;
FIG. 2 is a schematic structural view of the present invention;
in the figure: 1. the small-diameter-variable pipe comprises a small-diameter-variable pipe, 2 small-diameter outer cylinder sections, 3 second circumferential sealing full weld joints, 4 reinforcing cylinder sections, 5 first circumferential sealing full weld joints, 6 large-diameter outer cylinder sections, 7 large-diameter-variable pipe, 8 inner cylinder sections, 9 first limiting rings, 10 second limiting rings, 11 corrugated pipes, 12 guide cylinders, 13 cushion rings, 14 baffle rings.
Detailed Description
The present invention will be described with reference to the accompanying drawings and specific embodiments, but the present invention is not limited to these embodiments.
The utility model provides a disposable corrugated compensator, includes big outer shell ring 6 of constant diameter, little outer shell ring 2 of constant diameter, big reducing pipe 7, little reducing pipe 1, strengthens shell ring 4, interior shell ring 8, bellows 11 and draft tube 12, and the both ends of bellows 11 are connected with an interior shell ring 8 respectively, and the connection form is the welding, and big outer shell ring 6 of constant diameter, little outer shell ring 2 of constant diameter, strengthen shell ring 4, interior shell ring 8 are the straight shell ring of constant diameter, and bellows 11 can adopt the bellows structure of the different materials of different forms.
The inner side of one inner cylinder section 8 is connected with a guide cylinder 12, the connection can be welded on the inner cylinder 8 through a backing ring 11, the outer side of the tail end of the guide cylinder 12 is fixed with a first limiting ring 9, the inner side of the other inner cylinder section 8 corresponding to the first limiting ring 9 is fixed with a second limiting ring 10, the first limiting ring 9 is contacted with the second limiting ring 10 or the first limiting ring and the second limiting ring 10 have a gap, if the outer seal of the outer side of the corrugated pipe fails, the second limiting ring 10 is matched with the first limiting ring 9 for limiting, the two inner cylinder sections 8 are respectively welded on the inner sides of a large reducing pipe 7 and a small reducing pipe 1 which are coaxially arranged, the diameter of the large reducing pipe 7 and the diameter of the small reducing pipe 1 are gradually increased towards the direction of the corrugated pipe 11, the large diameter end of the large reducing pipe 7 is connected with a large-diameter outer cylinder section 6, the large diameter reducing pipe 7 and the large-diameter outer cylinder section 6 are integrally formed, the large diameter end of the small diameter reducing pipe 1 is integrally connected with a small-diameter outer cylinder section 2, the small reducing pipe 1 and the small equal-diameter outer cylinder section 2 are integrally formed, the free end of the small equal-diameter outer cylinder section 2 extends into the large equal-diameter outer cylinder section 6, a gap is reserved between the free end of the small equal-diameter outer cylinder section 2 and the large equal-diameter outer cylinder section 6, the end edge of the large equal-diameter outer cylinder section 6 is welded on the small equal-diameter outer cylinder section 2 to form a first circumferential sealing full-weld joint 5, the end of the large equal-diameter outer cylinder section 6 is welded with a reinforcing cylinder section 4 through the first circumferential sealing full-weld joint 5, and the end edge of the reinforcing cylinder section 4 is welded on the small equal-diameter outer cylinder section 2 to form a second circumferential sealing full-weld joint 3.
Before the disposable corrugated compensator is constructed on site, a first circumferential sealed full weld joint 5 and a second circumferential sealed full weld joint 3 are not welded, an outer cylinder section of a reducer pipe on two sides can stretch to a proper position after a field pipeline is preheated to a designed required elongation, a reinforcing cylinder section is pushed to a position close to a large reducer pipe, the specific position meets the requirement of a compensator drawing, and then the first circumferential sealed full weld joint 5 and the second circumferential sealed full weld joint 3 are welded.
The baffle ring 14 is arranged at the front end of the guide shell 12, so that the impact of fluid on the welding seam of the guide shell can be reduced, the guide shell is prevented from falling off, and the service life of the guide shell is prolonged.
The inner shell ring 8 is flush with the small-diameter ends of the large reducing pipe 7 and the small reducing pipe 1, so that the fluid resistance can be reduced, and the energy loss can be reduced.
The guide shell 12 is a straight shell section without a flange, the manufacturing manufacturability of the guide shell with a flange structure is poor, the guide shell 12 is connected with the inner shell section through a backing ring 13, the backing ring 13 is arranged to enhance the connection strength of the guide shell and the shell section, and one side of the guide shell, which is provided with a plug welding hole, along the circumference, is provided with a plug welding hole to enhance the connection strength of the guide shell and the backing ring; the other end of the guide shell 12 is provided with a group of limiting rings, which can prevent the bellows from overlarge stretching deformation caused by abnormal displacement, and the limiting rings can be of an integral annular plate structure or an annular plate structure which is intermittently uniformly distributed along the circumference and staggered mutually.
The size of the half apex angle (the included angle between the bevel edge of the cone section and the axis) of the reducer pipe directly influences the stress of the reducer pipe, further influences the fatigue life of the reducer pipe, and the half apex angles of the large reducer pipe 7 and the small reducer pipe 1 are smaller than 20 degrees.
The small end of the reducer pipe is welded with the pipeline, the length of the straight section of the small end cannot be too short, the short length can cause large weld stress at the position, and the lengths of the straight sections of the small end of the large reducer pipe 7 and the small reducer pipe 1 are larger than 80 mm.
Claims (6)
1. A disposable bellow compensator, characterized by: comprises a large-isodiametric outer cylinder section (6), a small-isodiametric outer cylinder section (2), a large-reducing pipe (7), a small-reducing pipe (1), a reinforcing cylinder section (4), an inner cylinder section (8), a corrugated pipe (11) and a guide cylinder (12), wherein two ends of the corrugated pipe (11) are respectively connected with one inner cylinder section (8), the inner side of one inner cylinder section (8) is connected with the guide cylinder (12), the outer side of the tail end of the guide cylinder (12) is fixedly provided with a first limiting ring (9), the inner side of the other inner cylinder section (8) corresponding to the first limiting ring (9) is fixedly provided with a second limiting ring (10), the second limiting ring (10) and the first limiting ring (9) are matched for limiting, the two inner cylinder sections (8) are respectively welded on the inner sides of the large-reducing pipe (7) and the small-reducing pipe (1) which are coaxially arranged, the diameter of the large-reducing pipe (7) and the small-reducing pipe (1) are gradually increased towards the direction of the corrugated pipe (11), the large-diameter end of the large reducing pipe (7) is connected with a large equal-diameter outer cylinder section (6), the large reducing pipe (7) and the large equal-diameter outer cylinder section (6) are integrally formed, the large-diameter end of the small reducing pipe (1) is integrally connected with a small equal-diameter outer cylinder section (2), the small reducing pipe (1) and the small equal-diameter outer cylinder section (2) are integrally formed, the free end of the small equal-diameter outer cylinder section (2) extends into the large equal-diameter outer cylinder section (6), a gap is arranged between the large-equal-diameter outer cylinder section (6), the edge of the end part of the large-equal-diameter outer cylinder section (6) is welded on the small-equal-diameter outer cylinder section (2) to form a first circumferential sealing full weld joint (5), and a reinforcing shell ring (4) is welded at the end part of the large-isodiametric outer shell ring (6) through a first circumferential sealing full weld joint (5), and the edge of the end part of the reinforcing shell ring (4) is welded on the small-isodiametric outer shell ring (2) to form a second circumferential sealing full weld joint (3).
2. A disposable ripple compensator of claim 1, wherein: the front end of the guide shell (12) is provided with a baffle ring (14).
3. A disposable ripple compensator of claim 1, wherein: the inner cylinder section (8) is flush with the small-diameter ends of the large reducing pipe (7) and the small reducing pipe (1).
4. A disposable ripple compensator of claim 1, wherein: the structure of the guide shell (12) is a straight shell section without a flange, and the guide shell (12) is connected with the inner shell section (8) through a backing ring (13).
5. A disposable ripple compensator of claim 1, wherein: the half vertex angle of the large reducing pipe (7) and the small reducing pipe (1) is less than 20 degrees.
6. A disposable ripple compensator of claim 1, wherein: the lengths of the small end straight edges of the large reducing pipe (7) and the small reducing pipe (1) are larger than 80 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122164566.6U CN216201539U (en) | 2021-09-08 | 2021-09-08 | Disposable corrugated compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122164566.6U CN216201539U (en) | 2021-09-08 | 2021-09-08 | Disposable corrugated compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216201539U true CN216201539U (en) | 2022-04-05 |
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ID=80918463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122164566.6U Active CN216201539U (en) | 2021-09-08 | 2021-09-08 | Disposable corrugated compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216201539U (en) |
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2021
- 2021-09-08 CN CN202122164566.6U patent/CN216201539U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.88, Binhe North Road, hi tech Zone, Luoyang City, Henan Province Patentee after: CSSC Shuangrui (Luoyang) special equipment Co.,Ltd. Patentee after: Taiyuan Thermal Power Group Co., Ltd Address before: No.88, Binhe North Road, hi tech Zone, Luoyang City, Henan Province Patentee before: LUOYANG SUNRUI SPECIAL EQUIPMENT Co.,Ltd. Patentee before: Taiyuan Thermal Power Group Co., Ltd |
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| CP01 | Change in the name or title of a patent holder |