Multi-angle reversing type tubular expansion joint

Abstract

The utility model relates to the technical field of expansion joints, in particular to a multi-angle reversing type tubular expansion joint which comprises a first mounting plate, a corrugated pipe is mounted on one side of the first mounting plate, and a second mounting plate is mounted on the side, away from the first mounting plate, of the corrugated pipe. Mounting holes are formed in the surfaces of the first mounting plate and the second mounting plate, a convex block is fixedly connected to the surface of the first mounting plate, an adjusting rod is fixedly connected to the surface of the convex block, a guide sleeve is fixedly connected to the surface of the second mounting plate, and an insertion hole is formed in the surface of the guide sleeve. According to the technical scheme, the structure of the tubular expansion joint is effectively improved, after the tubular expansion joint is in a stable state, the corrugated pipe and the adjusting rod are effectively limited through the locking nut, the protection ring and the buffer rod, then normal use of the tubular expansion joint is ensured, the damage probability of the tubular expansion joint is reduced, and the service life of the tubular expansion joint is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of expansion joint especially relates to a multi-angle reversing type pipe expansion joint. BACKGROUND

[0002] The pipe expansion joint is a device for compensating the displacement of the pipeline system, which is mainly composed of a bellows, a connecting pipe and an end ring. The bellows, which is the core part, is made of metal material and has multiple corrugations, which can flexibly stretch and contract in the axial, lateral and angular directions. When the pipeline displacement is caused by temperature, pressure changes or vibration, the bellows will expand or contract accordingly to absorb the displacement. According to the displacement form, the pipe expansion joint can be divided into axial, lateral and angular types. According to the material, it can be divided into metal and non-metal expansion joints. It is widely used in the fields of thermal engineering, chemical pipeline system, building water supply and drainage, and heating and ventilation system, which can ensure the safe and stable operation of the pipeline system.

[0003] The prior art such as the patent with publication number CN118149192A discloses a multi-angle reversing type pipe expansion joint, which includes an outer cylinder, a partial spherical shell-shaped universal cylinder is arranged inside the outer cylinder, a inner cylinder is fixedly connected to one end of the universal cylinder, the inner cylinder protrudes out of the outer cylinder, a flange ring plate is arranged outside the inner cylinder, a gap space is left in the flange ring plate for the movement of the inner cylinder, a plurality of evenly arranged bolts are fixedly connected between the ring plate and the flange ring plate outside the outer cylinder. During the deformation or movement of the pipeline, the relative movement between the outer cylinder and the inner cylinder will occur, and the soft cylinder between the outer cylinder and the universal cylinder may be partially deformed excessively and cannot fully recover. Therefore, the soft cylinder can be pulled out at the gap by the lifting cylinder, and the soft cylinder can recover to a full state. Then, the soft cylinder is reinserted into the gap between the outer cylinder and the universal cylinder, ensuring that the gap is completely sealed. Such an expansion joint has a longer service life.

[0004] Currently, most pipe expansion joints have complex structures and can only cope with small deformation amounts. When the pipe expansion joint is subjected to a large deformation amount, the pipe expansion joint is prone to damage, which leads to the inability of the pipe expansion joint to be used normally and shortens the service life of the pipe expansion joint. Therefore, improvement is needed. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the shortcomings in the prior art that most pipe expansion joints have complex structures and can only cope with small deformation amounts, when the pipe expansion joint is subjected to a large deformation amount, the pipe expansion joint is prone to damage, which leads to the inability of the pipe expansion joint to be used normally and shortens the service life of the pipe expansion joint, and proposes a multi-angle reversing type pipe expansion joint.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: A multi-angle reversing type pipe expansion joint, comprising a first mounting plate, one side of the first mounting plate is provided with a bellows, the side away from the first mounting plate of the bellows is provided with a second mounting plate, the surface of the first mounting plate and the second mounting plate is all provided with a mounting hole, the surface of the first mounting plate is fixedly connected with a lug, the surface of the lug is fixedly connected with an adjusting rod, the surface of the second mounting plate is fixedly connected with a guide sleeve, the surface of the guide sleeve is provided with a thimble, one end of the adjusting rod penetrates the thimble, the adjusting rod is threadedly connected with a lock nut, the bellows is provided with a protective ring, the utility model effectively improves the structure of pipe expansion joint, after the pipe expansion joint is in stable state, the bellows and the adjusting rod are effectively limited through the lock nut, the protective ring and the buffer rod, thereby ensuring the normal use of the pipe expansion joint, reducing the probability of pipe expansion joint damage, and improving the service life of the pipe expansion joint.

[0007] Preferably, the first mounting plate and the second mounting plate are fixedly connected with mounting heads on the sides away from each other, ensuring stable connection of the pipe expansion joint with the pipeline.

[0008] Preferably, the number of the lugs and the adjusting rods is four, and the four lugs and the adjusting rods are arranged in a circumferential array.

[0009] Preferably, the surface of the protective ring is fixedly connected with a limiting sleeve, and the limiting sleeve is sleeved on the adjusting rod, effectively limiting displacement of the protective ring.

[0010] Preferably, the number of the limiting sleeves is four, and the four limiting sleeves are arranged in a circumferential array, and the limiting sleeves are triangular, in the process of installing the pipe expansion joint, the flange plate of the pipeline is sleeved on the mounting head, then the pipe expansion joint is installed with the pipeline through bolts and the mounting holes, the lock nut is kept in a relaxed state before use, after a period of use, the deformation state of the adjusting rod and the bellows is observed, after the deformation is in a stable state, the lock nut is rotated to abut against the guide sleeve, then the protective ring is slid to the deformation area of the bellows and the adjusting rod, and the first limiting block and the second limiting block are rotated to displace towards the limiting sleeve, then the pipe expansion joint can be normally used.

[0011] Preferably, the adjusting rod is threadedly connected with the first limiting block and the second limiting block, and the limiting sleeve is located between the first limiting block and the second limiting block.

[0012] Preferably, the inner wall of the protective ring is fixedly connected with a buffer rod, effectively responding to the deformation of the bellows and assisting in supporting the bellows.

[0013] Compared with the prior art, the utility model has the advantages and positive effects that:

[0014] 1、the utility model discloses, when installing tubular expansion joint, the flange plate of pipeline is aligned and is installed head cover, subsequently through bolt and installation hole, tubular expansion joint is installed with pipeline, keeps locking nut in slack state before using, after using a period of time, the deformation state of adjusting lever and bellows is observed, after the deformation is in stable state, the locking nut is rotated and makes it with guide sleeve abuts, subsequently protection ring is slid to the deformation area of bellows and adjusting lever, and the first limit stop and second limit stop are rotated and make it displacement to the direction close to limit cover, subsequently can normal use tubular expansion joint, the scheme effectively improves tubular expansion joint structure, after tubular expansion joint is in stable state, locking nut, protection ring and buffer rod effectively limit bellows and adjusting lever, and then ensure the normal use of tubular expansion joint, reduce the probability of tubular expansion joint damage, improve the service life of tubular expansion joint. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A three-dimensional structure schematic diagram of the multi-angle reversing type tubular expansion joint is provided for the utility model;

[0016] Figure 2 A bottom view structure schematic diagram of the multi-angle reversing type tubular expansion joint is provided for the utility model;

[0017] Figure 3 An explosion structure schematic diagram of the multi-angle reversing type tubular expansion joint is provided for the utility model;

[0018] Figure 4 A structure schematic diagram of the multi-angle reversing type tubular expansion joint in A of the utility model is provided for the utility model; Figure 3

[0019] Figure 5 A partial structure schematic diagram of the multi-angle reversing type tubular expansion joint is provided for the utility model.

[0020] LEGEND:

[0021] 1, first installation plate;2, bellows;3, second installation plate;4, installation head;5, installation hole;6, lug;7, adjusting lever;8, guide sleeve;9, locking nut;10, first limit stop;11, second limit stop;12, limit cover;13, protection ring;14, buffer rod;15, jack. DETAILED DESCRIPTION

[0022] Please refer to Figures 1-5 ​The utility model provides a kind of technical scheme: a multi-angle reversing type pipe expansion joint, including first mounting plate 1, one side of first mounting plate 1 is equipped with bellows 2, the side of bellows 2 away from first mounting plate 1 is equipped with second mounting plate 3, the surface of first mounting plate 1 and second mounting plate 3 is all equipped with mounting hole 5, the surface of first mounting plate 1 is fixedly connected with lug 6, the surface of lug 6 is fixedly connected with adjusting rod 7, the surface of second mounting plate 3 is fixedly connected with guide sleeve 8, the surface of guide sleeve 8 is equipped with jack 15, one end of adjusting rod 7 penetrates jack 15, adjusting rod 7 is threadedly connected with lock nut 9, bellows 2 is equipped with protective ring 13, this scheme effectively improves pipe expansion joint structure, after pipe expansion joint is in stable state, by lock nut 9, protective ring 13 and buffer rod 14 effectively limit bellows 2 and adjusting rod 7, to ensure the normal use of pipe expansion joint, reduce the probability of pipe expansion joint damage, improve the service life of pipe expansion joint.

[0023] In the embodiment: the side of first mounting plate 1 and second mounting plate 3 away from each other is fixedly connected with mounting head 4, to ensure that pipe expansion joint is stably connected with pipeline.

[0024] Specifically, the number of lug 6 and adjusting rod 7 is four, and the four lugs 6 and adjusting rods 7 are arranged in a circumferential array.

[0025] Specifically, the surface of protective ring 13 is fixedly connected with limiting sleeve 12, and the limiting sleeve 12 is sleeved on the adjusting rod 7 to effectively limit the displacement of the protective ring 13.

[0026] In the embodiment: the number of limiting sleeve 12 is four, and the four limiting sleeves 12 are arranged in a circumferential array, and the limiting sleeve 12 is triangular.

[0027] Specifically, the first limiting block 10 is threadedly connected to the adjusting rod 7, the second limiting block 11 is threadedly connected to the adjusting rod 7, and the limiting sleeve 12 is located between the first limiting block 10 and the second limiting block 11.

[0028] Specifically, the inner wall of the protective ring 13 is fixedly connected with the buffer rod 14, which effectively responds to the deformation of the bellows 2 and assists in supporting the bellows 2.

[0029] Working principle: when installing the tubular expansion joint, the flange of the pipeline is aligned with the mounting head 4, then the tubular expansion joint is installed with the pipeline through bolts and mounting holes 5, the lock nut 9 is kept in a relaxed state before use, after a period of use, the deformation state of the adjusting rod 7 and the bellows 2 is observed, when the deformation is in a stable state, the lock nut 9 is rotated to abut against the guide sleeve 8, then the protective ring 13 is slid to the deformation area of the bellows 2 and the adjusting rod 7, and the first limiting block 10 and the second limiting block 11 are rotated to move towards the limiting sleeve 12, then the tubular expansion joint can be used normally, the tubular expansion joint structure is effectively improved, after the tubular expansion joint is in a stable state, the bellows 2 and the adjusting rod 7 are effectively limited by the lock nut 9, the protective ring 13 and the buffer rod 14, thereby ensuring the normal use of the tubular expansion joint, reducing the probability of damage of the tubular expansion joint, and improving the service life of the tubular expansion joint.

Claims

1. A multi-angle reversing type pipe expansion joint comprising a first mounting plate (1), a corrugated pipe (2) mounted on one side of the first mounting plate (1), and a second mounting plate (3) mounted on the side of the corrugated pipe (2) away from the first mounting plate (1), characterized in that: The surface of the first mounting plate (1) and the second mounting plate (3) is provided with mounting holes (5), the surface of the first mounting plate (1) is fixedly connected with protrusions (6), the surface of the protrusions (6) is fixedly connected with adjusting rods (7), the surface of the second mounting plate (3) is fixedly connected with guide sleeves (8), the surface of the guide sleeves (8) is provided with insertion holes (15), one end of the adjusting rods (7) penetrates the insertion holes (15), the adjusting rods (7) are threadedly connected with lock nuts (9), and the corrugated pipes (2) are provided with protective rings (13).

2. A multi-angle reversing pipe expansion joint according to claim 1, characterized in that: The side, away from each other, of the first mounting plate (1) and the second mounting plate (3) is fixedly connected with mounting heads (4).

3. A multi-angle swivel pipe expansion joint as claimed in claim 1, wherein: The number of the protrusions (6) and the adjusting rods (7) is four, and the four protrusions (6) and the adjusting rods (7) are arranged in a circumferential array.

4. The multi-angle reversing pipe expansion joint according to claim 1, characterized in that: The surface of the protective ring (13) is fixedly connected with limiting sleeves (12), and the limiting sleeves (12) are sleeved on the adjusting rods (7).

5. A multi-angle swivelable pipe expansion joint according to claim 4, characterized in that: The number of the limiting sleeves (12) is four, the four limiting sleeves (12) are arranged in a circumferential array, and the limiting sleeves (12) are triangular.

6. A multi-angle swivelable pipe expansion joint as claimed in claim 4, wherein: The adjusting rods (7) are threadedly connected with first limiting blocks (10) and second limiting blocks (11), and the limiting sleeves (12) are located between the first limiting blocks (10) and the second limiting blocks (11).

7. The multi-angle swivel pipe expansion joint according to claim 1, wherein: The inner wall of the protective ring (13) is fixedly connected with buffer rods (14).

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