CN214699728U - Expansion joint used under high-vibration, high-abrasion and high-corrosion working condition - Google Patents
Expansion joint used under high-vibration, high-abrasion and high-corrosion working condition Download PDFInfo
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- CN214699728U CN214699728U CN202121012048.6U CN202121012048U CN214699728U CN 214699728 U CN214699728 U CN 214699728U CN 202121012048 U CN202121012048 U CN 202121012048U CN 214699728 U CN214699728 U CN 214699728U
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Abstract
The utility model relates to an expansion joint technical field, specifically provide an expansion joint for under high vibration high wear high corrosion operating mode, including the bellows, take over I, flange I, companion flange I, takeover II, flange II, companion flange II and turn-ups draft tube, take over I and takeover II are connected respectively to the both ends of bellows, take over I's the other end outside and flange I fixed connection, flange I and companion flange I cooperation, take over II the outside and flange II fixed connection of the other end, flange II and companion flange II cooperation, turn-ups draft tube one end is the straight mouth end, the other end is flaring turn-ups end, the straight mouth end outside and II inner wall clearance fits of takeover, the flaring part outer wall and the I inner wall laminating of takeover of flaring turn-ups end, the turn-ups part of flaring turn-ups end inserts between flange I and companion flange I. The utility model discloses use under the high corruption operating mode of high vibration high wear, improved the life of expansion joint.
Description
Technical Field
The utility model relates to an expansion joint technical field specifically provides an expansion joint for under high-vibration high wearing and tearing high corruption operating mode.
Background
The expansion joint is a special pipeline element, and compensates displacement change of a pipeline caused by temperature rise, mechanical impact and vibration by utilizing effective telescopic deformation of the corrugated pipe, so that the aims of improving the rigidity of the pipeline, reducing the deformation rate of the pipeline and prolonging the service life are fulfilled. The expansion joint is a very critical but very weak link in a piping system, and common damage reasons of the expansion joint comprise corrosion and rupture of the corrugated pipe, vibration damage (including erosion), wave cavity foreign matter accumulation and the like. With the development of economy and the progress of society, the structure of the expansion joint under the working conditions of high vibration, high abrasion and high corrosion is gradually optimized, for example, the method of adopting a corrugated pipe to raise the structure, increasing the thickness of a guide cylinder, optimizing the welding structure of the guide cylinder, filling aluminum silicate or a zirconium-containing fiber blanket in the corrugated pipe and the like is used for gradually prolonging the service life of the expansion joint.
At present, an expansion joint under the working conditions of high vibration, high abrasion and high corrosion generally adopts a lifting structure, a connecting pipe is connected with a corrugated pipe through a ring plate in a welded mode, a guide cylinder is connected with the connecting pipe in a welded mode, an aluminum silicate fiber blanket is filled between the guide cylinder and the corrugated pipe, a metal mesh sleeve is spot-welded at the opening end of the guide cylinder and used for preventing corrosion media from entering the corrugated pipe and reducing damage of the media to the corrugated pipe, the structure is not easy to overhaul and check the use state inside the corrugated pipe, the danger that a circumferential weld of the guide cylinder cracks and drops is easy to occur in a vibration situation, meanwhile, the corrosion media are easy to accumulate in a gap, the risk of stress corrosion damage is increased, and the danger that the filled aluminum silicate fiber blanket and the spot-welded metal mesh sleeve drop in the high vibration situation is high.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an expansion joint for under high vibration high wearing and tearing high corrosion operating mode.
The utility model discloses a realize like this, the utility model provides an expansion joint for under high vibration high wear high corrosion operating mode, including the bellows, take over I, flange I, companion flange I, take over II, flange II, companion flange II and turn-ups draft tube, take over I and take over II are connected respectively to the both ends of bellows, take over I other end outside and the I fixed connection of flange of I, flange I and companion flange I cooperation, take over II the outside and the II fixed connection of flange of the other end, flange II and companion flange II cooperations, turn-ups draft tube one end is the straight-mouth end, the other end is flaring turn-ups end, the straight-mouth end outside and the II inner wall clearance fit of takeover, the flaring part outer wall of flaring turn-ups end and the I inner wall laminating of takeover, the turn-ups part of flaring turn-ups end inserts between flange I and companion flange I.
Preferably, the metal net sleeve is sleeved on the outer side of the straight opening end of the flanging guide cylinder, one end of the U-shaped fork is fixedly connected with the straight opening end of the flanging guide cylinder, the other end of the U-shaped fork is connected with the metal net sleeve, and the outer side of the metal net sleeve is tightly attached to the inner wall of the connecting pipe II.
Preferably, the connecting pipe I and the connecting pipe II are of a three-folding-section integrated structure, and the two ends of the corrugated pipe are respectively inserted into the inner walls of the large opening ends of the connecting pipe I and the connecting pipe II.
Further preferably, a welding purging structure is arranged on the connecting pipe I, and a purging pipe of the welding purging structure penetrates through the connecting pipe I and extends into a cavity formed by the connecting pipe I, the corrugated pipe, the connecting pipe II and the flanging guide cylinder.
Preferably, the flange I and the companion flange I are connected through a bolt structure, and the flange II and the companion flange II are connected through a bolt structure.
Preferably, gaskets I are arranged between the flange I and the flanging guide cylinder, between the flanging guide cylinder and the mating flange I, and gaskets II are arranged between the flange II and the mating flange II.
Compared with the prior art, the utility model has the advantages of:
1) the flanging guide cylinder is connected by the flanging loop, a circumferential weld welding structure of the guide cylinder and the expansion joint is omitted, the risk of failure of the expansion joint due to cracking of the circumferential weld of the guide cylinder and the expansion joint under a high-vibration working condition is reduced, and meanwhile, the guide cylinder can be replaced at any time when being worn, so that the service life of the expansion joint is prolonged.
2) The flanging guide cylinder adopts a loop streamline flaring structure, the state of the circumferential weld of the corrugated pipe can be disassembled and observed at any time, and meanwhile, the flaring end is matched with the connecting pipe I to play a certain guiding role, so that the coaxiality of the flanging guide cylinder and the expansion joint is ensured, and the accumulation of corrosive media and the impact caused by the change of the caliber are reduced in a streamline manner; the inner diameter of the flanging guide cylinder is consistent with that of the connecting pipe, so that the flow resistance of the expansion joint is effectively reduced.
3) The connecting pipe I and the connecting pipe II adopt a streamline integrated structure, so that the risk of failure of an expansion joint caused by cracking of a circumferential weld of the connecting pipe in a vibration occasion and the risk of corrosion damage caused by long-term accumulation of a corrosion medium at a gap are reduced;
4) the welding purging structure is inserted into the connecting pipe, the purging structure and the metal net sleeve act together to prevent corrosive media from entering a cavity formed by the flanging guide cylinder, the connecting pipe I, the connecting pipe II and the corrugated pipe, and meanwhile, the purging structure can also play a certain cooling role to prevent the temperature of a medium accumulation part from being too high.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and embodiments:
FIG. 1 is a sectional view of the overall structure of the present invention;
FIG. 2 is an enlarged view of the connection position of the straight opening end of the flanging guide cylinder, the metal mesh sleeve and the U-shaped fork;
FIG. 3 is an enlarged view of the connection position of a flanging guide cylinder, a flange I and a mating flange I;
fig. 4 is a perspective view of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 and 4, the utility model provides an expansion joint used under high-vibration, high-abrasion and high-corrosion working conditions, which comprises a corrugated pipe 7, a connecting pipe I6, a flange I4 and a mating flange I1, take over II 8, flange II 11, companion flange II 14 and turn-ups draft tube 2, take over I6 and take over II 8 are connected respectively to the both ends of bellows 7, take over I6's the other end outside and flange I4 fixed connection, flange I4 and companion flange I1 cooperation, take over II 8 other end the outside and flange II 11 fixed connection, flange II 11 and companion flange II 14 cooperation, turn-ups draft tube 2 adopts the turn-ups streamline structure, one end is the spigot end, the other end is flaring turn-ups end, the spigot end outside and take over II 8 inner wall clearance fit, the flaring part outer wall and the I6 inner wall laminating of take over of flaring turn-ups end, the turn-ups part of flaring turn-ups end inserts between flange I4 and companion flange I1.
Adopt the utility model discloses, under the high corruption operating mode of high vibration high wearing and tearing, the draft tube adopts turn-ups loop structure, easily changes when taking place to rub to decrease, and can demolish when the unit stops, looks over 7 girth weld states of bellows, tentatively judges whether bellows 7 can continue to use to avoid the expansion joint to become invalid suddenly and damage.
The guide shell adopts a streamline flaring structure, the flaring end is in clearance fit with the connecting pipe I6, a certain guiding effect is achieved, the coaxiality of the flanging guide shell 2 and the expansion joint is ensured, and the accumulation of corrosive media and impact caused by caliber change are reduced in a streamline mode.
The inner diameter of the flanging guide cylinder 2 is consistent with the inner diameter of the pipeline, so that the flow resistance of the expansion joint is effectively reduced.
The corrugated pipe 7 is respectively connected with the connecting pipe I6 and the connecting pipe II 8 in an internal welding mode, and corrosion media are prevented from accumulating at the gap between the corrugated pipe 7 and the connecting pipe.
In order to prevent corrosive media from entering the corrugated pipe 7, referring to fig. 2, as an improvement of the technical scheme, a metal mesh sleeve 10 is sleeved outside a straight opening end of the flanging guide cylinder 2, one end of the U-shaped fork 9 is fixedly connected with the straight opening end of the flanging guide cylinder 2, the other end of the U-shaped fork is connected with the metal mesh sleeve 10, and the outer side of the metal mesh sleeve 10 is tightly attached to the inner wall of the connecting pipe II 8.
For corrosion prevention, the connecting pipe I6 and the connecting pipe II 8 are of a three-folding-section integrated structure, and two ends of the corrugated pipe 7 are respectively inserted into the inner walls of the large opening ends of the connecting pipe I6 and the connecting pipe II 8.
The connecting pipe I6 and the connecting pipe II 8 adopt a streamline integrated structure, so that the risk of failure of an expansion joint caused by cracking of a circumferential weld of the connecting pipe in a vibration occasion and the risk of corrosion damage caused by long-term accumulation of a corrosion medium at a gap are reduced.
In order to further prevent a medium from entering the corrugated pipe 7, as an improvement of the technical scheme, a welding purging structure 5 is arranged on the connecting pipe I6, and a purging pipe of the welding purging structure penetrates through the connecting pipe I6 and extends into a cavity formed by the connecting pipe I6, the corrugated pipe 7, the connecting pipe II 8 and the flanging guide cylinder 2.
Insert the welding on takeover I6 and sweep structure 5, with metal mesh cover 10 and U type fork 9 combined action, prevent that corrosive medium from getting into turn-ups draft tube 2 and takeover I6, takeover II 8 and bellows 7 are constituteed in the cavity, sweep the structure simultaneously and can also play certain cooling effect, prevent that the medium from gathering a temperature too high.
As a specific connection mode, the flange I4 and the companion flange I1, and the flange II 11 and the companion flange II 14 are connected through bolt structures 13.
In order to strengthen the sealing, as an improvement, gaskets I3 are arranged between the flange I4 and the flanging guide cylinder 2 and between the flanging guide cylinder 2 and the mating flange I1, and gaskets II 12 are arranged between the flange II 11 and the mating flange II 14.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (6)
1. An expansion joint used under a high-vibration high-abrasion high-corrosion working condition is characterized by comprising a corrugated pipe (7), a connecting pipe I (6), a flange I (4), a mating flange I (1), a connecting pipe II (8), a flange II (11), a mating flange II (14) and a flanging guide cylinder (2), wherein two ends of the corrugated pipe (7) are respectively connected with the connecting pipe I (6) and the connecting pipe II (8), the outer side of the other end of the connecting pipe I (6) is fixedly connected with the flange I (4), the flange I (4) is matched with the mating flange I (1), the outer side of the other end of the connecting pipe II (8) is fixedly connected with the flange II (11), the flange II (11) is matched with the mating flange II (14), one end of the flanging guide cylinder (2) is a straight-end, the other end of the flanging guide cylinder is a flared end, the outer side of the straight-end is in clearance fit with the inner wall of the connecting pipe II (8), the outer wall of the flared portion of the flared end of the flanging end is attached to the inner wall of the connecting pipe I (6), the flanging part of the flaring flanging end is inserted between the flange I (4) and the mating flange I (1).
2. The expansion joint used under the working conditions of high vibration, high abrasion and high corrosion according to claim 1, wherein a metal mesh sleeve (10) is sleeved outside a straight opening end of the flanging guide cylinder (2), one end of the expansion joint provided with a U-shaped fork (9) is fixedly connected with the straight opening end of the flanging guide cylinder (2), the other end of the expansion joint is connected with the metal mesh sleeve (10), and the outer side of the metal mesh sleeve (10) is tightly attached to the inner wall of the connecting pipe II (8).
3. The expansion joint used under the working conditions of high vibration, high abrasion and high corrosion according to claim 1, wherein the connecting pipe I (6) and the connecting pipe II (8) are of a three-folded-section integrated structure, and two ends of the corrugated pipe (7) are respectively inserted into the inner walls of the large opening ends of the connecting pipe I (6) and the connecting pipe II (8).
4. The expansion joint used under the working conditions of high vibration, high abrasion and high corrosion according to claim 3, wherein a welding purging structure (5) is arranged on the connecting pipe I (6), and a purging pipe of the welding purging structure penetrates through the connecting pipe I (6) and extends into a cavity formed by the connecting pipe I (6), the corrugated pipe (7), the connecting pipe II (8) and the flanging guide cylinder (2).
5. The expansion joint used under the working conditions of high vibration, high abrasion and high corrosion according to claim 1, wherein the flange I (4) and the companion flange I (1) and the flange II (11) and the companion flange II (14) are connected through bolt structures (13).
6. The expansion joint used under the working conditions of high vibration, high abrasion and high corrosion according to claim 5, wherein a gasket I (3) is arranged between the flange I (4) and the flanging guide cylinder (2), a gasket II (12) is arranged between the flange II (11) and the companion flange II (14), and a gasket I (3) is arranged between the flanging guide cylinder (2) and the companion flange I (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121012048.6U CN214699728U (en) | 2021-05-12 | 2021-05-12 | Expansion joint used under high-vibration, high-abrasion and high-corrosion working condition |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121012048.6U CN214699728U (en) | 2021-05-12 | 2021-05-12 | Expansion joint used under high-vibration, high-abrasion and high-corrosion working condition |
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| Publication Number | Publication Date |
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| CN214699728U true CN214699728U (en) | 2021-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121012048.6U Active CN214699728U (en) | 2021-05-12 | 2021-05-12 | Expansion joint used under high-vibration, high-abrasion and high-corrosion working condition |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114992416A (en) * | 2022-05-07 | 2022-09-02 | 沈芳 | Axial expansion joint |
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2021
- 2021-05-12 CN CN202121012048.6U patent/CN214699728U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114992416A (en) * | 2022-05-07 | 2022-09-02 | 沈芳 | Axial expansion joint |
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