Multi-layer protection type pipeline compensator

Abstract

The utility model discloses a multilayer protection type pipeline compensator which comprises a middle fixing pipeline, two corrugated pipes, two connecting pipe sections and two flanges, the two corrugated pipes are fixedly connected to the two ends of the middle fixing pipeline respectively, and the two connecting pipe sections are fixedly connected to the ends, away from the middle fixing pipeline, of the two corrugated pipes respectively. The two flanges are fixedly mounted at the ends, away from the two corrugated pipes, of the two connecting pipe sections, a U-shaped frame is fixedly mounted on the surface of the middle fixing pipeline, a mounting plate is fixedly mounted at the bottom of the U-shaped frame, and protective wrapping covers are mounted between the two ends of the surface of the middle fixing pipeline and the surfaces of the two connecting pipe sections correspondingly. The corrugated pipe is located in the protective wrapping cover, and buffer compensators are annularly installed between the two ends of the surface of the middle fixing pipeline and the surfaces of the two connecting pipe sections at equal intervals. The multi-layer protection type pipeline compensator is simple in structural design and stable and reliable to use, and the performance of the multi-layer protection type pipeline compensator can meet the use requirement.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline compensators, in particular to a multi-layer protection type pipeline compensator. Background Art

[0002] Pipeline compensators are also called expansion joints or expansion joints. They are mainly used to compensate for the thermal expansion and contraction of pipelines caused by temperature changes. If the pipeline cannot expand or contract completely freely when the temperature changes, thermal stress will be generated in the pipeline. This stress must be considered in the pipeline design, otherwise it may cause the pipeline to rupture and affect the normal production. As an important part of the pipeline project, the compensator plays an important role in ensuring the long-term normal operation of the pipeline. Most of the existing pipeline compensators are structures with flanges at both ends of the bellows. When any flange is subjected to force, it will squeeze or stretch the bellows and affect the other flange, thereby indirectly affecting the pipeline connected to the flange. At the same time, the bellows is directly exposed to the outside and is easily affected by the external environment. Therefore, improvements are needed to address the above problems. Utility Model Content

[0003] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multi-layer protective pipeline compensator, comprising a central fixed pipeline, two bellows, two connecting pipe sections and two flanges, the two bellows are respectively fixedly connected to the two ends of the central fixed pipeline, the two connecting pipe sections are respectively fixedly connected to the ends of the two bellows away from the central fixed pipeline, the two flanges are fixedly installed at the ends of the two connecting pipe sections away from the two bellows, a U-shaped frame is fixedly installed on the surface of the central fixed pipeline, a mounting plate is fixedly installed on the bottom of the U-shaped frame, protective wrapping covers are respectively installed between the two ends of the surface of the central fixed pipeline and the surfaces of the two connecting pipe sections, the bellows are located inside the protective wrapping covers, and buffer compensators are respectively installed in annular shapes at equal distances between the two ends of the surface of the central fixed pipeline and the surfaces of the two connecting pipe sections.

[0004] Preferably, the two protective wrapping covers each include a first ring cover and a second ring cover, the first ring cover is fixedly connected to the surfaces of the two connecting pipe sections, the second ring cover is fixedly connected to the two ends of the surface of the middle fixed pipe, and the opposite ends of the two first ring covers are provided with ring grooves, and the second ring cover is movably inserted inside the ring groove, thereby being able to effectively wrap and protect the corrugated pipe.

[0005] Preferably, the buffer compensator includes a first fixed block and a second fixed block, the first fixed block is fixedly installed on the circumferential surfaces of the two connecting pipe sections in an annular manner with equal distances, and the second fixed block is fixedly installed on the two ends of the circumferential surface of the middle fixed pipe in an annular manner with equal distances, one side of the first fixed block is fixedly connected to a fixing rod, the middle part of the second fixed block is movably connected to an I-shaped pin, one end of the I-shaped pin is fixedly connected to one end of the fixing rod, springs are sleeved on both sides of the surface of the I-shaped pin, and the two ends of the spring are fixedly connected to the second fixed block and the I-shaped pin respectively, so that double-stage buffer compensation can be effectively performed.

[0006] Preferably, the two corrugated pipes are composed of two outer polyamide layers, three middle steel mesh layers and two inner polyethylene layers. A middle steel mesh layer is provided between the two outer polyamide layers and between the two inner polyethylene layers, and a middle steel mesh layer is provided between adjacent outer polyamide layers and inner polyethylene layers, so that the corrugated pipe can withstand changes in different pressures.

[0007] Compared with the prior art, the beneficial effects of the utility model are as follows: by providing a middle fixed pipe, a bellows, a connecting pipe section, a flange, a U-shaped frame, a mounting plate, a first ring cover, a second ring cover, a ring groove, a first fixed block, a second fixed block, a fixed rod, an I-shaped pin and a spring, the multi-layer protective pipe compensator has the function of double-stage buffer compensation and a wrapping protection structure. The double-stage buffer compensation allows one end of the compensator to squeeze or stretch the bellows without affecting the other end of the compensator, and the wrapping protection structure can perform surface protection on the bellows to prevent the surface of the bellows from being affected by the external environment and shortening its service life. At the same time, the multi-layer protective pipe compensator has a simple structural design, is stable and reliable to use, and its performance can meet the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0009] In the attached picture:

[0010] Figure 1 This is a schematic diagram of the cross-sectional structure of the multi-layer protective pipeline compensator of the utility model;

[0011] Figure 2 For this utility model Figure 1 Schematic diagram of the local structure;

[0012] In the figure: 1. middle fixed pipe; 2. bellows; 3. connecting pipe section; 4. flange; 5. U-shaped frame; 6. mounting plate; 7. protective wrapping cover; 8. buffer compensator; 10. first circle cover; 11. second circle cover; 12. circle groove; 13. first fixed block; 14. second fixed block; 15. fixing rod; 16. I-shaped pin; 17. spring. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with 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 of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0014] Depend on Figure 1 and Figure 2 It is given that the utility model includes a central fixed pipe 1, two bellows 2, two connecting pipe sections 3 and two flanges 4, the two bellows 2 are respectively fixedly connected to the two ends of the central fixed pipe 1, the two connecting pipe sections 3 are respectively fixedly connected to the ends of the two bellows 2 away from the central fixed pipe 1, the two flanges 4 are fixedly installed at the ends of the two connecting pipe sections 3 away from the two bellows 2, a U-shaped frame 5 is fixedly installed on the surface of the central fixed pipe 1, a mounting plate 6 is fixedly installed on the bottom of the U-shaped frame 5, and the mounting plate 6 is fixedly installed on a fixed structure such as the ground and piers, protective wrapping covers 7 are respectively installed between the two ends of the surface of the central fixed pipe 1 and the surfaces of the two connecting pipe sections 3, the bellows 2 is located inside the protective wrapping covers 7, and buffer compensators 8 are respectively installed in annular shapes at equal distances between the two ends of the surface of the central fixed pipe 1 and the surfaces of the two connecting pipe sections 3.

[0015] Both bellows 2 are composed of two outer polyamide layers, three middle steel mesh layers and two inner polyethylene layers. A middle steel mesh layer is provided between the two outer polyamide layers and between the two inner polyethylene layers, and a middle steel mesh layer is provided between adjacent outer polyamide layers and inner polyethylene layers, so that the bellows 2 can withstand changes in different pressures.

[0016] The two protective wrapping covers 7 each include a first ring cover 10 and a second ring cover 11, the first ring cover 10 is fixedly connected to the surface of the two connecting pipe sections 3, the second ring cover 11 is fixedly connected to the two ends of the surface of the middle fixed pipe 1, and the opposite ends of the two first ring covers 10 are provided with a ring groove 12, and the second ring cover 11 is movably inserted in the ring groove 12, so that the corrugated pipe 2 can be effectively wrapped and protected; the buffer compensator 8 includes a first fixed block 13 and a second fixed block 14, and the first fixed block 13 is fixedly installed in an annular manner with equal distances. On the circumferential surface of the two connecting pipe sections 3, the second fixing blocks 14 are fixedly installed at both ends of the circumferential surface of the middle fixed pipe 1 in an annular manner with equal distances, one side of the first fixing block 13 is fixedly connected with a fixing rod 15, and the middle of the second fixing block 14 is movably plugged with an I-shaped pin 16, one end of the I-shaped pin 16 is fixedly connected to one end of the fixing rod 15, and both sides of the surface of the I-shaped pin 16 are sleeved with springs 17, and the two ends of the spring 17 are fixedly connected to the second fixing block 14 and the I-shaped pin 16, respectively, so that double-stage buffer compensation can be effectively performed;

[0017] When any flange 4 moves under the action of force, the flange 4 will pull or squeeze the bellows 2 through the connecting pipe section 3, and the force generated by the stretching and compression of the bellows 2 will be applied to the middle fixed pipe 1, and the middle fixed pipe 1 is fixedly installed on a fixed structure such as the ground and piers without affecting another bellows 2, another connecting pipe section 3 and another flange 4; and the movement of the connecting pipe section 3 will drive the I-shaped pin 16 to move through the fixing rod 15, and the movement of the I-shaped pin 16 will stretch and press the two springs 17 respectively to play a role of buffer compensation.

[0018] The multi-layer protective pipe compensator has the function of double-stage buffer compensation and a wrapping protective structure. The double-stage buffer compensation allows one end of the compensator to squeeze or stretch the bellows without affecting the other end of the compensator, while the wrapping protective structure can provide surface protection for the bellows to prevent the surface of the bellows from being affected by the external environment and shortening its service life. At the same time, the multi-layer protective pipe compensator has a simple structural design and is stable and reliable to use. Its performance can meet the use requirements.

Claims

1. A multi-layer protective pipeline compensator, comprising a central fixed pipeline (1), two bellows (2), two connecting pipe sections (3) and two flanges (4), characterized in that: The two bellows (2) are respectively fixedly connected to the two ends of the middle fixed pipe (1); the two connecting pipe sections (3) are respectively fixedly connected to the ends of the two bellows (2) away from the middle fixed pipe (1); the two flanges (4) are respectively fixedly installed at the ends of the two connecting pipe sections (3) away from the two bellows (2); a U-shaped frame (5) is fixedly installed on the surface of the middle fixed pipe (1); a mounting plate (6) is fixedly installed on the bottom of the U-shaped frame (5); protective wrapping covers (7) are respectively installed between the two ends of the surface of the middle fixed pipe (1) and the surfaces of the two connecting pipe sections (3); the bellows (2) is located inside the protective wrapping cover (7); and buffer compensators (8) are respectively installed at equal distances between the two ends of the surface of the middle fixed pipe (1) and the surfaces of the two connecting pipe sections (3).

2. A multi-layer protection type pipeline compensator according to claim 1, characterized in that: The two protective wrapping covers (7) each comprise a first ring cover (10) and a second ring cover (11), wherein the first ring cover (10) is fixedly connected to the surfaces of the two connecting pipe sections (3), and the second ring cover (11) is fixedly connected to the two ends of the surface of the middle fixed pipe (1), and the opposite ends of the two first ring covers (10) are each provided with a ring groove (12), and the second ring cover (11) is movably inserted into the inside of the ring groove (12).

3. A multi-layer protection type pipeline compensator according to claim 1, characterized in that: The buffer compensator (8) comprises a first fixed block (13) and a second fixed block (14); the first fixed block (13) is fixedly mounted on the circumferential surfaces of the two connecting pipe sections (3) at equal distances in an annular manner; the second fixed block (14) is fixedly mounted on the two ends of the circumferential surface of the central fixed pipe (1) at equal distances in an annular manner; one side of the first fixed block (13) is fixedly connected to a fixed rod (15); the middle of the second fixed block (14) is movably connected to an I-shaped pin (16); one end of the I-shaped pin (16) is fixedly connected to one end of the fixed rod (15); springs (17) are sleeved on both sides of the surface of the I-shaped pin (16); and the two ends of the spring (17) are fixedly connected to the second fixed block (14) and the I-shaped pin (16) respectively.

4. The multi-layer protection type pipeline compensator according to claim 1 is characterized in that: The two corrugated pipes (2) each have two outer polyamide layers, three middle steel wire mesh layers and two inner polyethylene layers. The layer structure is composed of two outer polyamide layers and a middle steel wire mesh layer is provided between the two inner polyethylene layers. A middle steel wire mesh layer is arranged between adjacent outer polyamide layers and inner polyethylene layers.

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