CN211599778U

CN211599778U - Corrugated pipe device

Info

Publication number: CN211599778U
Application number: CN202020152121.9U
Authority: CN
Inventors: 陈运庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-02-04
Filing date: 2020-02-04
Publication date: 2020-09-29
Anticipated expiration: 2030-02-04

Abstract

A corrugated pipe device comprises a body unit and a reinforcing unit arranged on the body unit. The body unit comprises a main pipe and two end pipes which are respectively connected with two opposite ends of the main pipe. The main pipe comprises a plurality of crest portions, a plurality of connecting portions and a plurality of trough portions which respectively pass through the connecting portions and form waveforms with the crest portions. Each wave trough part and two adjacent joint parts define a spacing space. The reinforcing unit comprises a plurality of reinforcing modules which are respectively arranged in the interval space, a net sleeve which is sleeved on the main pipe, and two bundle rings which are respectively sleeved on the end pipe and are used for positioning the net sleeve. Through the reinforcement module is in the interval space produces the supporting effect, and the cooperation is covered and is produced radial positioning effect from outside the net cover can prevent the crest portion reaches the trough portion produces deformation.

Description

Corrugated pipe device

Technical Field

The present invention relates to a pipe fitting for transporting fluid, and more particularly to a bellows device.

Background

In order to deal with the transportation of high-pressure fluid, a transportation pipe capable of bearing a certain pressure is required. Referring to fig. 1, a conventional corrugated pipe 1 includes a pipe body 11, a net 12 covering the pipe body 11, two end pipes 13 respectively connected to opposite ends of the pipe body 11, and two collars 14 respectively connected to opposite ends of the pipe body 11 and used for positioning the net 12 and connecting the end pipes 13. Wherein, each end pipe 13 and the same side collar 14 are connected with each other by a welding point 19 formed at the connection end of the collar 14, the end pipe 13 and the pipe body 11, and the same side collar 14 is positioned.

The tube body 11 includes a plurality of wave crest portions 118 and wave trough portions 119 connected alternately and continuously, and the repeated wave form formed by the wave crest portions 118 and the wave trough portions 119 can achieve the effects of shock absorption, pressure resistance and even thermal deformation prevention. When the net cover 12 is covered on the pipe body 11, it directly contacts the crest portion 118, thereby generating a limiting effect in the radial direction and enhancing the performance of the pipe body 11 in bearing internal pressure and absorbing shock. Due to the repeated wave shape formed by the crest portions 118 and the trough portions 119, the tube body 11 can provide a slight expansion and contraction elasticity compared with a completely straight shape, thereby also achieving the effects of optimizing the pressure resistance and damping.

Referring to fig. 1 and 2, when the corrugated pipe 1 is used for transmitting high-pressure fluid, the pressure-bearing force is not completely and uniformly distributed during the fluid flowing process, so that the local large pressure-bearing force may still deform the crest portions 118 or the trough portions 119, thereby destroying the regular and repetitive waveform shape originally presented. In order to avoid the deformation of the crest portions 118 or the trough portions 119, although the radial supporting force is strengthened by the net cover 12, the corrugated tube 1 may be deformed compared to the crest portions 118, and the trough portions 119 that do not contact the net cover 12 and cannot receive the supporting effect may be deformed. Particularly, if the crest portions 118 are radially expanded due to the high pressure characteristics of the high pressure fluid, since the outside of the crest portions 118 is still supported by the net 12, the deformation amount generated by the pressure will be reflected to the expansion of each crest portion 118, and the deformation amount will affect the wave trough portions 119, so that the wave trough portions 119 are subjected to the external force similar to the inward pressing from the axially opposite sides, and the wave trough portions are deformed to be sharper. When any one of the wave trough portions 119 is deformed as described above, not only the entire wave form may be damaged, but also stress concentration may be caused, so that the originally expected effect of the corrugated tube 1 is lost if light, and a fracture may be caused if a local structure cannot bear an external force.

Referring to fig. 3 and fig. 1, regarding the overall strength of the corrugated tube 1, even though the peak portions 118 and the valley portions 119 optimize the pressure bearing performance, the connection relationship between each end tube 13, the corresponding end of the tube body 11, and the collar 14 on the same side is formed by only one weld 19, and under the condition that the corrugated tube 1 bears the pressure, the weld 19 must support the stress from multiple directions at the same time, the probability of damage from the weld 19 is relatively increased, and the durability is also problematic.

Disclosure of Invention

An object of the utility model is to provide a can avoid producing the bellows device of deformation in order to improve the durability and optimize the conduction fluid performance.

The utility model discloses bellows device contains the body unit, and install in strengthen unit on the body unit.

The body unit includes a main tube, and two end tubes respectively joined to opposite ends of the main tube. The main pipe comprises a plurality of crest portions, a plurality of connecting portions which are respectively connected with the opposite two ends of the crest portions and extend along the radial direction, and a plurality of wave trough portions which are respectively connected with the crest portions in a staggered mode through the connecting portions to form continuous waves together. The outer side of each wave trough part and two adjacent connecting parts jointly define a spacing space.

The reinforcing unit comprises a plurality of reinforcing modules which are respectively arranged in the interval space, a net sleeve which is sleeved outside the main pipe, and two binding rings which are respectively sleeved on the end pipe and used for positioning the net sleeve.

The purpose of the utility model and the technical problem thereof can be further realized by adopting the following technical measures.

Preferably, in the above-mentioned bellows apparatus, each of the reinforcement modules of the reinforcement unit has two semi-ring members that are C-shaped, have openings respectively, and can be butted with each other to form a complete ring, and each of the semi-ring members is composed of an inner ring portion and an expanding portion that is integrally connected to a radial outer side of the inner ring portion and has a gradually expanding width.

Preferably, in the above-mentioned bellows apparatus, the half ring members of each of the reinforcement modules are butted against each other with the openings facing each other to form two connection points, and at least two of the connection points are staggered from each other along the axial direction of the main pipe.

Preferably, in the above corrugated pipe apparatus, opposite sides of each reinforcing module of the reinforcing unit are spaced from the adjacent joining portions respectively.

Preferably, in the above-mentioned bellows apparatus, a material of the reinforcing module of the reinforcing unit is the same as a material of the main pipe of the body unit.

Preferably, in the above-mentioned bellows apparatus, two ends of the main tube adjacent to the end tube are respectively spaced from the end tube to define an outlet port space, and the reinforcing unit further includes two engagement rings respectively disposed in the port space.

Preferably, each of the port spaces is defined by the main tube adjacent to the trough portion of the respective end tube, an engaging portion engaged with the trough portion, and a notch defined by surrounding the respective end tube, the trough portion being spaced apart from the end tube to define a notch communicating with the port space, and each of the engaging rings of the reinforcement unit has a base portion located in the respective port space, an overlapping portion extending from the base portion in a direction away from the main tube and overlapping the respective end tube, and a tenon portion extending from the base portion and located in the respective notch.

Preferably, the bellows apparatus further includes two inner solders respectively soldered between the connecting portion of the adapter ring and the end tube.

Preferably, in the above-mentioned bellows apparatus, the material of the joint ring of the reinforcement unit is the same as the material of the main tube and the end tube of the body unit.

Preferably, in the above-mentioned bellows apparatus, the reinforcing unit further includes two outer solders respectively welded between one end of the collar away from the body unit and the mesh sleeve.

The utility model discloses a profitable effect lies in: will the reinforcement module sets up respectively in the interval space, can be right the trough produces the supporting effect, and the cooperation covers from outside and produces radial positioning effect the net cover can effectively prevent the crest portion reaches the trough produces deformation, borrows this not only can improve the usability and the durability of this novel bellows device to can optimize the performance of transmission high-pressure fluid because of overall structure's enhancement.

Drawings

FIG. 1 is a schematic diagram illustrating a prior art bellows;

fig. 2 is a schematic process diagram illustrating a deformation of a tube body of the conventional bellows in conjunction with fig. 1;

fig. 3 is a partially enlarged view illustrating a structural strength disadvantage of the conventional bellows;

fig. 4 is a schematic view illustrating an embodiment of the bellows apparatus of the present invention;

FIG. 5 is a partial exploded perspective view illustrating the manner in which two reinforcement modules of a reinforcement unit of the illustrated embodiment are assembled;

fig. 6 is a partial side view illustrating the completion of the installation of the reinforcement module in conjunction with fig. 5;

fig. 7 is a partially enlarged schematic view illustrating a state where the reinforcing module is mounted on a body unit of the embodiment; and

fig. 8 is a partially enlarged view illustrating the manner of installation of one of the link rings using the reinforcement unit and the effect that can be produced.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

Referring to fig. 4, an embodiment of the bellows device of the present invention includes a body unit 2, and a reinforcing unit 3 installed on the body unit 2. The embodiment is suitable for forming a path for transmitting fluid after the installation is completed by connecting fixed or movable flanges, and the installation mode can be freely adjusted according to the use environment or equipment conditions, and is not limited by the technical means of flange installation.

Referring to fig. 4 and 5, the body unit 2 includes a main pipe 21 extending in an axial direction, and two end pipes 22 integrally connected to opposite ends of the main pipe 21. The main tube 21 includes a plurality of crest portions 211, a plurality of engagement portions 219 engaged with opposite ends of the crest portions 211 and extending in a radial direction, and a plurality of trough portions 212 engaged with the crest portions 211 via the engagement portions 219 in a staggered manner. It should be noted that each crest 211 and each trough 212 are annular, and when viewed in a cross section of the main pipe 21 along the radial direction, the crest 211, the connecting portion 219, and the trough 212 together form a continuous waveform running along the axial direction, and the crest 211 and the trough 212 substantially correspond to the crest and the trough of the continuous waveform, respectively. The outside of each wave trough portion 212 and two adjacent connecting portions 219 define a space 210, and the wave trough portion 212 adjacent to the end pipe 22 and the connecting portions 219 connected to the wave trough portion 212 respectively define a port space 220 (shown in fig. 8) spaced from the end pipe 22, and the wave trough portion 212 and the end pipe 22 are spaced to define a notch 229 (shown in fig. 8) communicated with the port space 220.

The reinforcing unit 3 includes a plurality of reinforcing modules 31 respectively disposed in the separation space 210, a mesh sleeve 32 sleeved outside the main pipe 21, two fastening rings 33 respectively sleeved on the end pipe 22 and used for positioning the mesh sleeve 32, two joining rings 34 respectively disposed in the port space 220 (see fig. 8), two inner solders 35 respectively soldered between the joining rings 34 and the end pipe 22, and two outer solders 36 respectively soldered between one end of the fastening ring 33 away from the joining rings 34 and the mesh sleeve 32.

Referring to fig. 5 and 6, each of the reinforcement modules 31 has two C-shaped half rings 311 that have an opening 310 and can be butted with each other to form a complete ring, that is, the half rings 311 of each of the reinforcement modules 31 are butted with each other in a direction in which the openings 310 face each other to form two connection points 41, which is beneficial to improving the operation efficiency during assembling one by one. Referring to fig. 5 to 7, each half ring member 311 is composed of an inner ring portion 312 and an expanding portion 313 integrally connected to a radial outer side of the inner ring portion 312 and having a gradually expanding width. Opposite sides of the inner ring portion 312 of each reinforcing module 31 are respectively spaced from the adjacent joining portions 219, so that each waveform still has a slight vibration margin along the axial direction to absorb the vibration generated by conveying the high-pressure fluid, thereby achieving the effect of shock absorption; each of the expanded portions 313 corresponds to the adjacent crest portions 211 on the left and right sides, and both sides extend along the outer arc of the respective crest portions 211 to generate a targeted supporting effect on the crest portions 211. In addition, as shown in fig. 6, the connection points 41 of the reinforcement module 31 are offset from each other along the axial direction of the main pipe 21, so that the connection points 41 are not concentrated on the extension of the same straight line, and the phenomenon of concentrated stress caused by the distributed connection points is avoided.

Referring to fig. 8 in conjunction with fig. 4, each of the adaptor rings 34 has a base portion 341 located in the respective port space 220, a bridging portion 342 extending from the base portion 341 in a direction away from the main tube 21 and bridging the respective end tube 22, and a tenon portion 343 extending from the base portion 341 and positioned in the respective notch 229. The joint ring 34 is provided at a different position than the reinforcement module 31, and can also exert a supporting effect on the valley portion 212 corresponding to the port space 220, and also can exert a function of optimizing the link strength by the joint portion 342 of the end pipe 22 joined to the same side and the locking tongue portion 343 (only one side is shown in fig. 8) respectively positioned at the notches 229.

Referring to fig. 7 and 8, in order to ensure that each of the adapter rings 34 can be fixed well, each of the adapter rings 34 is also positioned in the respective port space 220 by welding, and specifically, welding may be performed between the joint with the main pipe 21, i.e., the tenon portion 343 and the main pipe 21, so as to form a welding point 42 as shown in fig. 8. In order to further avoid the problem of stress concentration of the adapter ring 34, the inner solder 35 is formed at a lap joint with the end pipe 22 on the same side, in addition to the welding of the adapter ring 34 to the main pipe 21. Each of the internal solders 35 is formed between the corresponding one of the bridging portions 342 and the corresponding one of the end pipes 22, so that each of the adapter rings 34 and the corresponding one of the main pipes 21 and the corresponding one of the end pipes 22 can be formed with a corresponding one of the solder joints, thereby dispersing stress and optimizing the stability of the connection.

It should be noted that, when the materials joined to each other by welding are different, corrosion is easily accelerated by the potential difference between the different materials, and in order to prevent corrosion from occurring at the welded portion, the material of the reinforcement module 31 of the reinforcement unit 3 is the same as the main pipe 21 of the body unit 2, and the material of the joint ring 34 is the same as the main pipe 21 and the end pipe 22 of the body unit 2, and the potential difference between the materials can be prevented by the design of the same materials joined to each other, and it is particularly preferable to use stainless steel materials such as SUS-304, SUS-316, etc., so that corrosion can be prevented more effectively and durability can be improved greatly.

Referring to fig. 4, 7 and 8 again, after the reinforcing module 31 and the connecting ring 34 of the present embodiment are installed, the net cover 32 can be fixed by the welding and positioning of the collar 33 and the outer solder 36, so as to complete the assembly of the present embodiment. In the case of the collar 33 and the adapter ring 34 located on the same side, two welding points, i.e., the inner solder 35 and the welding point 42, are formed between each adapter ring 34 and the end tube 22 on the same side, and a welding point, i.e., a welding point of the outer solder 36 is also formed between each collar 33 and the mesh cover 32, i.e., at the joint where the main tube 21 and each end tube 22 are joined, there are substantially three welding points to distribute the stress generated during use, thereby improving the stability of the joint.

Then, in terms of overall use strength, the reinforcement module 31 can support the crest portions 211 and the trough portions 212 corresponding to the space spaces 210, respectively, and the coupling ring 34 can support the trough portions 212 corresponding to the port spaces 220, thereby enhancing the coupling strength at the coupling position of the end pipes 22 and avoiding stress concentration. Finally, the mesh sleeve 32 providing the radially inward supporting effect can integrally maintain the continuous wave-shaped structural form formed by the wave crest 211 and the wave trough 212 of the main pipe 21, so as to effectively prevent the deformation, thereby improving the durability and the bearable internal pressure.

Claims

1. A corrugated pipe device comprises a body unit, wherein the body unit comprises a main pipe and two end pipes which are respectively connected with two opposite ends of the main pipe; the method is characterized in that: the corrugated pipe device comprises a main pipe and a body unit, wherein the main pipe comprises a plurality of crest portions, a plurality of joining portions which are respectively joined to two opposite ends of the crest portions and extend along the radial direction, and a plurality of wave trough portions which are respectively joined with the crest portions through the joining portions in a staggered manner to jointly form a continuous waveform, an interval space is jointly defined between the outer side of each wave trough portion and two adjacent joining portions, the corrugated pipe device further comprises a reinforcing unit which is installed on the body unit, the reinforcing unit comprises a plurality of reinforcing modules which are respectively arranged in the interval space, a net sleeve which is sleeved outside the main pipe, and two bundle rings which are respectively sleeved on the end pipe and are used for positioning the net sleeve.

2. The bellows arrangement of claim 1, wherein: each reinforcing module of the reinforcing unit is provided with two semi-ring pieces which are respectively C-shaped, have openings and can be mutually butted to form a complete ring shape together, and each semi-ring piece consists of an inner ring part and an expanding part which is integrally connected to the radial outer side of the inner ring part and has gradually expanded width.

3. The bellows arrangement of claim 2, wherein: the half ring pieces of each reinforcing module are butted with each other in the direction in which the openings face each other to form two connecting points, and at least two of the connecting points are staggered with each other in the axial direction of the main pipe.

4. A bellows arrangement according to any one of claims 1 to 3, wherein: opposite sides of each reinforcing module of the reinforcing unit are respectively spaced from the adjacent joining parts.

5. A bellows arrangement according to any one of claims 1 to 3, wherein: the material of the reinforcing module of the reinforcing unit is the same as that of the main pipe of the body unit.

6. The bellows arrangement of claim 1, wherein: the two ends of the main pipe adjacent to the end pipe are respectively spaced from the end pipe to define an outlet port space, and the reinforcing unit further comprises two connecting rings respectively arranged in the port space.

7. The bellows arrangement of claim 6, wherein: each port space is defined by the main pipe adjacent to the wave trough part of the corresponding end pipe, the connecting part connected with the wave trough part and the corresponding end pipe in a surrounding mode, the wave trough part and the corresponding end pipe are spaced to define a notch communicated with the port space, and each connecting ring of the reinforcing unit is provided with a base part located in the corresponding port space, a lapping part extending from the base part in a direction away from the main pipe and lapping on the corresponding end pipe, and a clamping tenon part extending from the base part and located in the corresponding notch.

8. The bellows arrangement of claim 7, wherein: the reinforcing unit further comprises two inner solders respectively welded between the lap joint part of the joint ring and the end pipe.

9. The bellows arrangement according to any one of claims 6 to 8, wherein: the material of the connecting ring of the reinforcing unit is the same as that of the main pipe and the end pipe of the body unit.

10. The bellows arrangement of claim 1, wherein: the reinforcing unit also comprises two outer solders which are respectively welded at one end of the beam ring, which is far away from the body unit, and the mesh sleeve.