Self-balancing device for corrugated pipe expansion joint

Abstract

The utility model discloses a self-balancing device for a corrugated pipe expansion joint, which relates to the field of pipeline compensators in mechanical engineering and comprises a corrugated pipe expansion joint, a plurality of connecting seats fixedly connected onto the corrugated pipe expansion joint, fixing plates fixedly connected onto the connecting seats, and a reinforcing ring fixedly connected between two fixing plates. Flange plates are fixedly connected to the two ends of the corrugated pipe expansion joint, connecting plates are fixedly connected to the two sides of the flange plates, a first adjusting mechanism is arranged between the two flange plates and comprises an adjusting rod, adjusters are arranged at the two ends of the adjusting rod, and a second adjusting mechanism is arranged between the two connecting plates. According to the self-balancing device, the rigidity and the stability of the corrugated pipe expansion joint are enhanced, and deformation is reduced. The first adjusting mechanism protects the connecting part, and the sealing performance is ensured. The second adjusting mechanism supports fine adjustment of pre-tightening force, adapts to thermal expansion and cold contraction, achieves effective displacement compensation, and improves performance and safety of a pipeline system.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of pipeline compensator in mechanical engineering, it is a kind of self-balancing device for corrugated pipe expansion joint. BACKGROUND

[0002] In the prior art, corrugated pipe expansion joints are widely used in various industrial piping systems to compensate for the expansion and contraction of the pipeline due to temperature changes. Traditional corrugated pipe expansion joints typically rely on external support structures or springs to provide the necessary counteracting force to maintain the stability of the expansion joint. However, these methods often increase the complexity and cost of the system and may not completely eliminate the problem of stress concentration caused by displacement. In addition, the sealing performance and service life of traditional expansion joints will be significantly reduced when facing larger axial displacement. SUMMARY

[0003] The purpose of the utility model is to provide a self-balancing device for corrugated pipe expansion joint to solve the problems raised in the background.

[0004] To achieve the above purpose, the utility model provides the following technical scheme:

[0005] A self-balancing device for corrugated pipe expansion joint, comprising a corrugated pipe expansion joint, a plurality of connecting seats are fixedly connected to the corrugated pipe expansion joint, a fixed plate is fixedly connected to the connecting seat, a reinforcing ring is fixedly connected between the two fixed plates, flanges are fixedly connected to both ends of the corrugated pipe expansion joint, connecting plates are fixedly connected to both sides of the flanges, a first adjusting mechanism is provided between the two flanges, the first adjusting mechanism comprises an adjusting rod, adjusters are provided at both ends of the adjusting rod, and a second adjusting mechanism is provided between the two connecting plates.

[0006] The second adjusting mechanism comprises a sleeve, a threaded rod is screwedly connected to the inside of the sleeve, the threaded rod penetrates through the connecting plate at both ends, limit nuts are screwedly connected to both ends of the threaded rod, and the threaded rod penetrates through the reinforcing ring.

[0007] The adjuster is fixedly connected to the inside of the flange.

[0008] The adjuster comprises a shell, a through hole is formed in the shell, and a cavity is formed in the inside of the shell.

[0009] The adjusting rod extends to the inside of the adjuster through the through hole, and limit feet are fixedly connected to both ends of the adjusting rod.

[0010] A spring is arranged between the limit feet and the shell, one end of the spring is fixedly connected to the limit feet, and the other end of the spring is fixedly connected to the inside upper end of the shell.

[0011] Compared with the prior art, the self-balancing device has the beneficial effects that:

[0012] 1. Improved structural stability: By providing multiple connection seats, fixed plates, and reinforcing rings on the corrugated pipe expansion joint, the overall rigidity and stability of the expansion joint are enhanced, reducing deformation caused by external pressure or temperature changes. This helps ensure long-term stable operation of the pipeline system.

[0013] 2. Enhanced safety: With the adjusting rod and adjuster in the first adjusting mechanism, when abnormal displacement occurs, the spring can act as a buffer, protecting the flange and other connecting components from excessive stress, increasing the safety and reliability of the system. The pre-tightening force of the expansion joint can be adjusted under different working conditions, ensuring good sealing performance, even in the face of large axial displacement, maintaining effective sealing to prevent leakage.

[0014] 3. Optimized displacement compensation: The second adjusting mechanism allows fine adjustment of the expansion joint to accommodate thermal expansion and contraction in the pipeline system while maintaining appropriate pre-tightening force, ensuring effective displacement compensation throughout the entire working range.

[0015] In summary, the self-balancing device significantly improves the rigidity and stability of the structure by providing multiple connection seats, fixed plates, and reinforcing rings on the corrugated pipe expansion joint, reducing deformation caused by external pressure or temperature changes, and ensuring long-term stable operation of the pipeline system. At the same time, the adjusting rod and adjuster in the first adjusting mechanism cooperate with the spring's buffering effect to protect the flange and other connecting components from excessive stress when abnormal displacement occurs, enhancing the safety and reliability of the system and ensuring good sealing performance, even in the face of large axial displacement, maintaining effective sealing. In addition, the second adjusting mechanism allows fine adjustment of the expansion joint to accommodate thermal expansion and contraction, maintaining appropriate pre-tightening force, thereby achieving effective displacement compensation throughout the entire working range. In summary, this device not only optimizes the function of the expansion joint but also enhances the overall performance and safety of the pipeline system. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 The utility model structural schematic diagram is provided for the utility model;

[0017] Fig. 2 The utility model cross section structure schematic diagram is provided for the utility model;

[0018] Fig. 3 The first adjusting mechanism structure schematic diagram is provided for the utility model;

[0019] In the figure: 1 corrugated pipe expansion joint, 2 connecting seat, 3 fixed plate, 4 reinforcing ring, 5 flange, 6 connecting plate, 7 first adjusting mechanism, 71 adjusting rod, 711 limiting foot, 72 adjuster, 721 shell, 722 through hole, 723 cavity, 8 second adjusting mechanism, 81 sleeve, 82 threaded rod, 83 limiting nut, 9 spring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Please refer to Figs. 1 to 3 A self-balancing device for corrugated pipe expansion joint, including corrugated pipe expansion joint 1, corrugated pipe expansion joint 1 is fixedly connected with multiple connecting seats 2, connecting seat 2 is fixedly connected with fixed plate 3, two fixed plates 3 are fixedly connected with reinforcing ring 4, the both ends of corrugated pipe expansion joint 1 are fixedly connected with flange 5, flange 5 both sides are fixedly connected with connecting plate 6, first adjusting mechanism 7 is arranged between two flanges 5, first adjusting mechanism 7 includes adjusting rod 71, the both ends of adjusting rod 71 are provided with adjuster 72, second adjusting mechanism 8 is arranged between two connecting plates 6.

[0022] Second adjusting mechanism 8 includes sleeve 81, threaded rod 82 is screw-connected in the inside of sleeve 81, threaded rod 82 both ends are through connecting plate 6, threaded rod 82 both ends are screw-connected with limiting nut 83, threaded rod 82 is through reinforcing ring 4.

[0023] Adjuster 72 is fixedly connected on the inside of flange 5.

[0024] Adjuster 72 includes shell 721, shell 721 is provided with through hole 722, shell 722 is provided with cavity 723 inside.

[0025] Adjusting rod 71 extends to the inside of shell 721 through through hole 722, the both ends of adjusting rod 71 are fixedly connected with limiting foot 711.

[0026] Limiting foot 711 and shell 721 are provided with spring 9, one end of spring 9 is fixedly connected on limiting foot 711, the other end of spring 9 is fixedly connected on the inside upper end of shell 721.

[0027] In this embodiment, the bellows expansion joint 1 has a plurality of connecting seats 2, which are evenly distributed and firmly fixed on the bellows expansion joint 1. Each connecting seat 2 is further fixed with a fixed plate 3, and the two fixed plates 3 are connected through a reinforcing ring 4, which not only provides additional support, but also serves as a through path for the threaded rod 82, helping to maintain the overall shape and stability of the bellows expansion joint 1.

[0028] The bellows expansion joint 1 is equipped with flanges 5 at both ends, and connecting plates 6 are provided on both sides of the flanges 5, which work together to support the second adjusting mechanism 8. The first adjusting mechanism 7 between the inner sides of the two flanges is composed of adjusting rods 71 and adjusters 72, and the adjusters 72 are fixed on the inner sides of the flanges 5. The adjuster 72 includes a housing 721 with a through hole 722 allowing the adjusting rod 71 to pass through and enter the cavity 723 inside the housing. The adjusting rod 71 is equipped with limit feet 711 at both ends, and springs 9 are arranged between the limit feet and the housing, which can absorb part of the energy when the bellows abnormally displaces, protect the flanges and other connecting parts from damage, and maintain good sealing performance. The second adjusting mechanism 8 is composed of a sleeve 81, a threaded rod 82 and a limit nut 83. The threaded rod 82 is fixed on the connecting plate 6 through the limit nuts 83 at both ends, and it also penetrates the reinforcing ring 4, so that the user can adjust the pre-tightening force of the bellows expansion joint by rotating the threaded rod, thereby effectively controlling the expansion joint and ensuring effective displacement compensation within the entire working temperature range.

[0029] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A self-balancing device for use on a bellows expansion joint, comprising a bellows expansion joint (1), characterized in that: The corrugated pipe expansion joint (1) is fixedly connected with a plurality of connecting seats (2), the connecting seat (2) is fixedly connected with a fixed plate (3), two fixed plates (3) are fixedly connected with a reinforcing ring (4), both ends of the corrugated pipe expansion joint (1) are fixedly connected with a flange (5), both sides of the flange (5) are fixedly connected with a connecting plate (6), a first adjusting mechanism (7) is arranged between the two flanges (5), the first adjusting mechanism (7) comprises an adjusting rod (71), both ends of the adjusting rod (71) are provided with an adjuster (72), a second adjusting mechanism (8) is arranged between the two connecting plates (6).

2. A self-balancing device for use on a bellows expansion joint as defined in claim 1, characterized in that: The second adjusting mechanism (8) comprises a sleeve (81), the inside of the sleeve (81) is screw-connected with a threaded rod (82), both ends of the threaded rod (82) penetrate the connecting plate (6), both ends of the threaded rod (82) are screw-connected with a limiting nut (83), the threaded rod (82) penetrates the reinforcing ring (4).

3. A self-balancing device for use on a bellows expansion joint as defined in claim 1, wherein: The adjuster (72) is fixedly connected to the inner side of the flange (5).

4. A self-balancing device for use on a bellows expansion joint as defined in claim 1, wherein: The adjuster (72) comprises an outer shell (721), the outer shell (721) is provided with a through hole (722), the inner part of the outer shell (721) is provided with a cavity (723).

5. A self-balancing device for use on a bellows expansion joint as defined in claim 4, wherein: The adjusting rod (71) extends to the inside of the outer shell (721) through the through hole (722), both ends of the adjusting rod (71) are fixedly connected with a limiting foot (711).

6. A self-balancing device for use on a bellows expansion joint as defined in claim 5, wherein: The limiting foot (711) and the outer shell (721) are provided with a spring (9), one end of the spring (9) is fixedly connected to the limiting foot (711), the other end of the spring (9) is fixedly connected to the inner upper end of the outer shell (721).

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