Metal bellows compensator with protective sleeve and observation hole

Abstract

The utility model relates to a metal corrugated pipe compensator with a protective sleeve and an observation hole, which comprises a first connecting pipe, a first corrugated pipe and a second connecting pipe which are connected in sequence, the compensator is provided with the protective sleeve, and the first corrugated pipe is arranged in the protective sleeve; one end of the protective sleeve is welded and fixed with the first connecting pipe through a first end plate; the other end of the protective sleeve is welded and fixed with the second connecting pipe through a second end plate; an observation hole is formed in the surface of the protective sleeve, and the first corrugated pipe can be observed through the observation hole; a displacement scale is arranged on the surface of the second connecting pipe. According to the utility model, the corrugated pipe is wrapped in the protective sleeve, and the corrugated pipe is observed through the observation hole of the protective sleeve; meanwhile, a displacement scale is arranged on the second connecting pipe; according to the metal corrugated pipe compensator, the safety of the compensator is enhanced through the protective sleeve, the working state of the corrugated pipe can be observed at any time through the observation hole, meanwhile, the compensator is monitored through the displacement scale, the expansion amount of the corrugated pipe can be accurately recorded, and more accurate monitoring and management of the metal corrugated pipe compensator are achieved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline compensator technology, and in particular to a metal bellows compensator equipped with a protective sleeve and an observation hole. Background Technology

[0002] Pipeline compensators, also known as expansion joints, are typically installed in sections within heating or gas pipelines to compensate for pipeline expansion and contraction. They are particularly useful for long-distance heating pipelines transporting high-temperature, high-pressure media. These compensators have thicker walls and higher strength, absorbing significant axial displacement of the pipeline. Therefore, high reliability is required for pipeline compensators.

[0003] Metal bellows compensators typically operate under internal pressure. After the medium is introduced into the pipeline, it enters the inner cavity of the bellows, meaning the inner wall of the bellows is subjected to pressure from the medium. When the pipeline expands or contracts due to thermal expansion and contraction, the bellows is subjected to tensile or compressive forces. Combined with the pressure on the inner wall of the bellows, over long-term use, the significant expansion and contraction of the heating pipeline and the high number of bellows can easily lead to fatigue and leakage in the compensator's bellows. Once an internal pressure bellows compensator leaks, the entire compensator will fail.

[0004] However, existing bellows compensators are often not convenient for observing the working status of the bellows, and cannot accurately record the expansion and contraction of the bellows. Therefore, they are not conducive to the management and maintenance of pipeline compensators, and sometimes the failure to detect damage and leakage of compensators in time can even lead to production safety accidents. Utility Model Content

[0005] The purpose of this invention is to provide a metal bellows compensator equipped with a protective sleeve and an observation hole. The protective sleeve not only enhances the safety of the compensator, but also allows for observation of the working status of the bellows at any time through the observation hole. In addition, a displacement scale is used to monitor the compensator, enabling more precise monitoring and management.

[0006] The objective of this utility model is achieved by adopting the following technical solution:

[0007] A metal bellows compensator with a protective sleeve and an observation hole includes a first connecting pipe, a first bellows, and a second connecting pipe connected in sequence. A guide pipe is provided in the inner cavity of the first bellows. One end of the guide pipe is welded and fixed to the inner wall of the first connecting pipe, and the other end of the guide pipe extends into the inner cavity of the second connecting pipe. The compensator is provided with a protective sleeve, which is a tubular structure. The first bellows is located in the inner cavity of the protective sleeve.

[0008] One end of the protective sleeve is welded and fixed to the outer surface of the first connector via a first end plate; the other end of the protective sleeve is welded and fixed to the outer surface of the second connector via a second end plate.

[0009] The protective sleeve has an observation hole on its surface, through which the first corrugated pipe can be observed.

[0010] As a preferred embodiment of this invention, the surface of the second connecting pipe is provided with a displacement scale.

[0011] As a preferred technical solution of this utility model, a second corrugated tube is provided in the inner cavity of the protective sleeve, and the second corrugated tube is connected to the first corrugated tube through an intermediate connecting pipe; a first guide ring plate is welded to the outer surface of the intermediate connecting pipe.

[0012] As a preferred embodiment of this utility model, the surface of the protective sleeve has two observation holes, which correspond to the first corrugated pipe and the second corrugated pipe, respectively.

[0013] As a preferred technical solution of this utility model, a third corrugated tube is also provided in the inner cavity of the protective sleeve. One end of the third corrugated tube is connected to the second corrugated tube through an intermediate connecting pipe, and the other end of the third corrugated tube is welded and fixed to the second connecting pipe.

[0014] A second guide ring plate is welded to the outer surface of the intermediate pipe; a third guide ring plate is welded to the outer surface of the second pipe.

[0015] As a preferred embodiment of this utility model, the intermediate connecting pipe is fixed to the ends of the second and third corrugated pipes by welding with reinforcing rings.

[0016] As a preferred embodiment of this utility model, the surface of the protective sleeve has three observation holes, which correspond to the first corrugated pipe, the second corrugated pipe and the third corrugated pipe respectively.

[0017] As a preferred embodiment of this utility model, the outer surface of the protective sleeve is provided with a left ear plate, the outer surface of the second connecting pipe is provided with a right ear plate, and the left ear plate and the right ear plate are connected by a pull rod and nut assembly.

[0018] As a preferred embodiment of this utility model, the left ear plate is welded and fixed to the outer surface of the protective sleeve, and the position of the left ear plate corresponds to that of the second end plate.

[0019] The advantages of this utility model are: compared with the prior art, this utility model wraps the corrugated pipe in a protective sleeve and has an observation hole on the surface of the protective sleeve, through which the corrugated pipe can be observed; at the same time, a displacement scale is provided on the surface of the second pipe.

[0020] This invention not only enhances the safety of the compensator through the protective sleeve, but also allows for real-time observation of the bellows' working status through the observation hole. Furthermore, the use of a displacement scale to monitor the compensator helps to accurately record the bellows' expansion and contraction, enabling more precise monitoring and management of the metal bellows compensator. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 yes Figure 1 A cross-sectional structural diagram.

[0023] In the diagram: 1. First connecting pipe, 2. First end plate, 3. First bellows, 4. Guide pipe, 5. First guide ring plate, 6. Protective sleeve, 7. Second guide ring plate, 8. Reinforcing ring, 9. Third guide ring plate, 10. Left ear plate, 11. Second end plate, 12. Second connecting pipe, 13. Right ear plate, 14. Tie rod and nut assembly, 15. Intermediate connecting pipe, 16. Observation hole, 17. Displacement scale, 18. Second bellows, 19. Third bellows. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0025] like Figure 1 and Figure 2 As shown, a metal bellows compensator with a protective sleeve and an observation hole includes a first connecting pipe 1, a first bellows 3, and a second connecting pipe 12 connected in sequence. A guide pipe 4 is provided inside the cavity of the first bellows 3. One end of the guide pipe 4 is welded and fixed to the inner wall of the first connecting pipe 1, and the other end of the guide pipe 4 extends into the cavity of the second connecting pipe 12. The compensator is provided with a protective sleeve 6, which is a tubular structure. The first bellows 3 is located inside the cavity of the protective sleeve 6. One end of the protective sleeve 6 is welded and fixed to the outer surface of the first connecting pipe 1 via a first end plate 2; the other end of the protective sleeve 6 is welded and fixed to the outer surface of the second connecting pipe 12 via a second end plate 11. An observation hole 16 is provided on the surface of the protective sleeve 6, through which the first bellows 3 can be observed.

[0026] The surface of the second connecting pipe 12 is provided with a displacement scale 17. The inner cavity of the protective sleeve 6 is provided with a second bellows 18, which is connected to the first bellows 3 through an intermediate connecting pipe 15; a first guide ring plate 5 is welded to the outer surface of the intermediate connecting pipe 15. The surface of the protective sleeve 6 has two observation holes, which correspond to the first bellows 3 and the second bellows 18, respectively.

[0027] In this embodiment, the inner cavity of the protective sleeve 6 is also provided with a third corrugated tube 19. One end of the third corrugated tube 19 is connected to the second corrugated tube 18 through the intermediate connecting tube 15, and the other end of the third corrugated tube 19 is welded and fixed to the second connecting tube 18. A second guide ring plate 7 is welded to the outer surface of the intermediate connecting tube 15. A third guide ring plate 9 is welded to the outer surface of the second connecting tube 12.

[0028] The intermediate connecting pipe 15 is welded and fixed to the ends of the second corrugated pipe 18 and the third corrugated pipe 19 by reinforcing rings 8. The surface of the protective sleeve 6 has three observation holes, which correspond to the first corrugated pipe 3, the second corrugated pipe 18 and the third corrugated pipe 19 respectively.

[0029] The outer surface of the protective sleeve 6 is provided with a left ear plate 10, and the outer surface of the second connecting pipe 12 is provided with a right ear plate 13. The left ear plate 10 and the right ear plate 13 are connected by a tie rod and nut assembly 14. The left ear plate 10 is welded and fixed to the outer surface of the protective sleeve 6, and the position of the left ear plate 10 corresponds to the second end plate 11.

[0030] The above embodiments are merely illustrative of the concept and technical features of this utility model, and are intended to enable those skilled in the art to understand the technical solution and implementation method of the utility model. They should not be construed as limiting the scope of protection of this utility model. All equivalent substitutions or changes made according to the technical solution of this utility model should be covered within the scope of protection of the claims of this utility model.

Claims

1. A metal bellows compensator with a protective sleeve and an observation hole, comprising a first connecting pipe, a first bellows, and a second connecting pipe connected in sequence, wherein a guide pipe is provided in the inner cavity of the first bellows, one end of the guide pipe is welded and fixed to the inner wall of the first connecting pipe, and the other end of the guide pipe extends into the inner cavity of the second connecting pipe, characterized in that: The compensator is provided with a protective sleeve, which is in a tubular structure, and the first bellows is arranged in the inner cavity of the protective sleeve; One end of the protective sleeve is welded and fixed with the outer surface of the first connecting pipe through a first end plate, and the other end of the protective sleeve is welded and fixed with the outer surface of the second connecting pipe through a second end plate; The surface of the protective sleeve is provided with an observation hole, through which the first bellows can be observed.

2. A metal bellows compensator provided with a protective sleeve and a viewing hole according to claim 1, characterized in that: The surface of the second connecting pipe is provided with a displacement scale.

3. A metal bellows compensator provided with a protective sleeve and a viewing aperture according to claim 1 or 2, characterized in that: The inner cavity of the protective sleeve is provided with a second bellows, which is connected with the first bellows through an intermediate connecting pipe, and the outer surface of the intermediate connecting pipe is welded with a first guide ring plate.

4. A metal bellows compensator provided with a protective sleeve and a viewing hole according to claim 3, characterized in that: The surface of the protective sleeve is provided with two observation holes, which correspond to the first bellows and the second bellows respectively.

5. A metal bellows compensator provided with a protective sleeve and a viewing aperture according to claim 4, characterized in that: The inner cavity of the protective sleeve is further provided with a third bellows, one end of which is connected with the second bellows through an intermediate connecting pipe, and the other end of which is welded and fixed with the second connecting pipe. The outer surface of the intermediate connecting pipe is welded with a second guide ring plate, and the outer surface of the second connecting pipe is welded with a third guide ring plate.

6. A metal bellows compensator provided with a protective sleeve and a viewing aperture according to claim 5, characterized in that: The intermediate connecting pipe is welded and fixed with the end portions of the second bellows and the third bellows through a reinforcing ring.

7. A metal bellows compensator provided with a protective sleeve and a viewing aperture according to claim 5, characterized in that: The surface of the protective sleeve is provided with three observation holes, which correspond to the first bellows, the second bellows and the third bellows respectively.

8. The metal bellows compensator provided with a protective sleeve and a viewing hole according to claim 1, characterized in that: The outer surface of the protective sleeve is provided with a left ear plate, and the outer surface of the second connecting pipe is provided with a right ear plate, and the left ear plate and the right ear plate are connected through a pull rod and a nut assembly.

9. A metal bellows compensator provided with a protective sleeve and a viewing aperture according to claim 8, characterized in that: The left ear plate is welded and fixed on the outer surface of the protective sleeve, and the position of the left ear plate corresponds to the second end plate.

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