Pipe compensator with multiple buffering effect

Abstract

The utility model discloses a kind of pipeline compensator with multiple buffering effect, specifically related to pipeline compensator technical field, including butt joint pipe, the butt joint pipe is provided with buffer assembly, the buffer assembly includes the inner lining compensation pipe being arranged in butt joint pipe, the middle part of the inner lining compensation pipe is provided with several reduction pads, and each of the reduction pad is all through and is provided with several through holes, the through hole of the reduction pad belonging to multiple is staggered arrangement.The utility model can disperse medium flow, reduce impact flow rate by staggered arrangement reduction pad through hole, preliminary reduction flow vibration;Shunt notch guides medium to enter the cavity of inner lining compensation pipe and butt joint pipe, further absorbs fluctuation energy by pressure buffer layer;The elastic deformation of rubber cylinder can directly absorb axial displacement generated by pipeline thermal expansion and cold shrink, while attenuating vibration wave;The clamping cooperation of staggered slot and abutting block limits radial deviation, and vibration energy is converted by sliding contact.

Description

Technical Field

[0001] This utility model relates to the field of pipeline compensator technology, and more specifically, to a pipeline compensator with multiple buffering effects. Background Technology

[0002] A pipeline compensator is a key component used to compensate for displacements (such as expansion, contraction, bending, and torsion) in pipelines caused by factors such as temperature changes, media flow, and installation errors, thereby protecting the safe and stable operation of the pipeline system. It effectively alleviates stress caused by pipeline displacement, preventing damage to pipeline joints, supports, or equipment due to excessive stress. The media transported in the pipeline (such as steam, hot water, and high-temperature gases) can cause temperature changes, leading to pipeline elongation or shortening. The compensator can absorb these length changes through its own structural deformation (such as expansion and contraction, and bending), preventing the pipeline from cracking or deforming due to excessive thermal stress.

[0003] Among them, patent CN221824792U discloses a pipe compensator, which includes a pipe body and a rubber ring. The rubber ring includes an annular rubber ring body, an outer annular protrusion and an inner annular protrusion. A first annular groove is designed on one or both sides of the pipe body. The opening of the first annular groove is also provided with a second annular groove that protrudes outward. The annular rubber ring body of the rubber ring is installed in the first annular groove, and the outer annular protrusion of the rubber ring is installed in the second annular groove. The inner annular protrusion is left with a certain distance from the bottom of the first annular groove. When in use, this structure features a ring-shaped rubber ring whose main body is 2-5 times longer than a normal rubber ring, improving the wear resistance of the rubber ring. However, this structure is not conducive to buffering the vibration of the medium being transported in the pipeline after the pipes are connected, which can easily cause the pipe connection to loosen. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a pipeline compensator with multiple buffering effects, which aims to solve the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a pipe compensator with multiple buffering effects, including a connecting pipe, wherein a buffer component is provided on the connecting pipe; The buffer assembly includes an inner lining compensation tube disposed inside the connecting tube. The inner lining compensation tube has several damping pads in the middle, and each damping pad has several through holes. The through holes of the multiple damping pads are arranged alternately. One end of the inner lining compensation tube is provided with a rubber cylinder, and a sealing ring is provided on the outside of the rubber cylinder.

[0006] Optionally, in one possible implementation, a docking block is provided at the end of the rubber cylinder away from the inner lining compensation pipe, the rubber cylinder is fixedly connected to the docking block, and misalignment grooves are respectively opened on both sides of the docking block. Two abutting blocks are provided at one end of the inner cavity of the connecting pipe, and the two abutting blocks are respectively located on one side of the corresponding misalignment groove. The abutting blocks are engaged with the misalignment groove. Several diversion slots are opened through the outer side of the inner lining compensation pipe. A cavity is formed between the inner lining compensation pipe and the connecting pipe. Several positioning grooves are opened at the end of the inner lining compensation pipe away from the rubber cylinder. The connecting pipe, the inner lining compensation pipe and the damping pad are all in the same axial direction. The technical effects and advantages of this utility model are as follows: The staggered damping pads and through-holes disperse the medium flow and reduce the impact velocity, thus initially reducing flow vibration. The diversion groove guides the medium into the cavity between the inner lining compensation pipe and the connecting pipe, where the pressure buffer layer further absorbs the wave energy. The elastic deformation of the rubber cylinder can directly absorb the axial displacement caused by the thermal expansion and contraction of the pipeline, while attenuating the vibration wave. The snap-fit ​​between the misalignment groove and the contact block not only limits radial displacement but also converts vibration energy through sliding contact. Furthermore, the connecting pipe, inner lining compensating pipe, and damping pad are all in the same axis, and precise docking with the external pipeline is achieved through the positioning groove: the coaxial design can avoid flow deviation when the medium flows, reduce local wear of the inner lining compensating pipe and damping pad, and extend the service life of the core components; the quick docking function of the positioning groove can reduce installation errors, avoid additional stress on the components due to misalignment, and further protect the pipeline system and the compensator itself. Attached Figure Description

[0007] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

[0008] Figure 1 This is a front view of the overall structure of this utility model.

[0009] Figure 2 This is a side view of the overall structure of this utility model.

[0010] Figure 3 This is a schematic diagram of the inner lining compensation pipe, the connecting block, and the rubber cylinder of this utility model.

[0011] Figure 4 This utility model Figure 3 Exploded view.

[0012] The attached diagram is labeled as follows: 1. Connecting pipe; 2. Inner lining compensation pipe; 3. Reduction pad; 4. Through hole; 5. Connecting block; 6. Rubber cylinder; 7. Misalignment groove; 8. Diversion groove opening; 9. Positioning groove; 10. Abutment block. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] This embodiment provides a pipeline compensator with multiple buffering effects, which is mainly suitable for pipeline systems that transport steam, high-temperature hot water or corrosive industrial gases. It can effectively absorb the thermal displacement caused by temperature changes in the pipeline and buffer the vibration during the flow of the medium, thus preventing the pipeline connection from loosening.

[0015] Example 1 The connecting pipe 1 is a hollow tubular structure with openings at both ends, and its inner diameter is designed according to the specifications of the compatible pipe. Near one end of its inner cavity, there are two symmetrically arranged abutment blocks 10 integrally formed. The abutment blocks 10 are arc-shaped block structures used to cooperate with the misalignment grooves 7 of the connecting block 5 to achieve positioning and buffering.

[0016] The inner lining compensation pipe 2 is installed inside the cavity of the connecting pipe 1, ensuring that an annular cavity is formed between the two for flow diversion and buffering. The inner lining compensation pipe 2 is aligned with the connecting pipe 1 and the damping pad 3 to prevent flow deviation during medium flow; its outer wall is uniformly perforated with several flow diversion slots 8 as shown in the attached figure. Figure 3 , 4 As shown, the diversion slot 8 has a rectangular structure and is used to guide part of the medium into the annular cavity; at the same time, on the end face of the inner lining compensating pipe 2 away from the rubber cylinder 6, several positioning slots 9 are evenly opened in the circumferential direction, which are used to cooperate with the positioning protrusion of the external pipeline to realize the rapid docking of the compensator with the external pipeline.

[0017] Several damping pads 3 are coaxially fixed at the middle position of the inner lining compensation pipe 2, as shown in the attached figure. Figure 3 , 4 As shown, the damping pad 3 can be made of silicone rubber material with excellent temperature resistance and elasticity. Each damping pad 3 has several circular through holes 4 as shown in the attached figure. Figure 4 As shown, the through holes 4 of each damping pad 3 are staggered to disperse the flow direction of the medium and initially reduce vibration energy.

[0018] One end of the inner lining compensating pipe 2 is fixedly connected to a rubber cylinder 6, and a rubber sealing ring can be fitted on its outer wall to seal the gap between the rubber cylinder 6 and the connecting pipe 1 to prevent media leakage.

[0019] The end of the rubber cylinder 6 furthest from the inner lining compensating pipe 2 is fixedly connected to a mating block 5 by bolts, as shown in the attached figure. Figure 3 , 4 As shown, the connecting block 5 is a circular block structure with a diameter consistent with the outer diameter of the inner lining compensating pipe 2. Two staggered grooves 7 are symmetrically formed on both sides of the connecting block 5, as shown in the attached figure. Figure 4 As shown, the misalignment groove 7 is an arc-shaped groove that matches the size of the contact block 10 of the connecting pipe 1. After assembly, the contact block 10 is snapped into the misalignment groove 7, which not only restricts the radial displacement of the connecting block 5, but also allows it to move slightly in the axial direction, thus achieving vibration buffering.

[0020] Example 2 Each damping pad 3 is fixed to the outer wall of the middle part of the inner lining compensation pipe 2 in an alternating manner with the through holes 4; One end of the rubber cylinder 6 is vulcanized and fixed to the end of the inner lining compensation pipe 2, and the other end is fastened to the connecting block 5 with bolts, and a sealing ring is put on the outside of the rubber cylinder 6. The assembled buffer assembly, including the inner lining compensation tube 2, the damping pad 3, the docking block 5, and the rubber cylinder 6, is inserted from one end of the docking tube 1, so that the contact block 10 of the docking tube 1 is engaged in the misalignment groove 7 of the docking block 5, thus completing the overall assembly. By engaging the positioning groove 9 of the inner lining compensating pipe 2 with the positioning protrusion of the outer pipe, the two ends of the compensator are respectively connected to the pipe to be connected, and finally fixed by flange or welding.

[0021] The specific working principle is as follows: after the medium, such as steam, enters from the inlet end of the inner lining compensation pipe 2, it first flows through each damping pad 3; due to the staggered arrangement of the through holes 4 of adjacent damping pads 3, the steam flow is forced to change its flow direction, and the originally concentrated airflow is dispersed into multiple fine streams, the flow velocity is reduced, and the impact vibration generated by the flow of the medium is initially reduced.

[0022] Part of the steam passes through the diversion slot 8 on the outside of the inner lining compensating pipe 2, as shown in the attached diagram. Figure 3 , 4 As shown, the steam enters the annular cavity between the inner lining compensation pipe 2 and the connecting pipe 1; the steam in the cavity forms a pressure buffer layer, which on the one hand reduces the pressure fluctuation of the inner wall of the inner lining compensation pipe 2, and on the other hand, further absorbs the vibration energy through the damping effect of the medium in the cavity, preventing the vibration from being directly transmitted to the connecting pipe 1.

[0023] When the steam flows continuously, it will generate an axial thrust on the rubber cylinder 6. Due to the excellent elasticity of the rubber cylinder 6, it can generate a certain elastic deformation along the axial direction, which absorbs the axial displacement of the pipeline caused by thermal expansion and contraction. At the same time, the elastic deformation of the rubber cylinder can further attenuate the vibration wave and avoid loosening of the connection caused by rigid collision.

[0024] When the mating block 5 moves slightly axially with the rubber cylinder 6, the abutting block 10 of the connecting pipe 1 is always engaged in the misalignment groove 7 of the mating block 5. The cooperation between the two not only restricts the radial displacement of the mating block 5 and prevents the inner lining compensation pipe 2 from colliding with the connecting pipe 1, but also converts the vibration into slight sliding friction through the sliding contact between the arc-shaped inner wall of the misalignment groove 7 and the abutting block 10, further weakening the energy of the vibration transmitted to the pipe interface.

[0025] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A pipe compensator with multiple buffering effects, comprising a connecting pipe (1), characterized in that: A buffer component is provided on the connecting pipe (1); The buffer assembly includes an inner lining compensation tube (2) disposed inside the connecting tube (1). The inner lining compensation tube (2) has several damping pads (3) in the middle, and each damping pad (3) has several through holes (4) through it. The through holes (4) of the multiple damping pads (3) are arranged alternately. One end of the inner lining compensation pipe (2) is provided with a rubber cylinder (6), and a sealing ring is provided on the outside of the rubber cylinder (6).

2. A pipe compensator with multiple buffering effects according to claim 1, characterized in that: The rubber cylinder (6) is provided with a docking block (5) at one end away from the inner lining compensation pipe (2), and the rubber cylinder (6) is fixedly connected to the docking block (5).

3. A pipe compensator with multiple buffering effects according to claim 2, characterized in that: The two sides of the docking block (5) are respectively provided with misaligned grooves (7), and two abutting blocks (10) are provided at one end of the inner cavity of the docking pipe (1).

4. A pipe compensator with multiple buffering effects according to claim 3, characterized in that: The two abutting blocks (10) are located on one side of the corresponding misalignment groove (7), and the abutting blocks (10) are engaged with the misalignment groove (7).

5. A pipe compensator with multiple buffering effects according to claim 1, characterized in that: The outer side of the inner lining compensation pipe (2) is provided with several diversion slots (8), and a cavity is formed between the inner lining compensation pipe (2) and the connecting pipe (1).

6. A pipe compensator with multiple buffering effects according to claim 1, characterized in that: The inner lining compensation pipe (2) has several positioning grooves (9) at the end away from the rubber cylinder (6), and the connecting pipe (1), the inner lining compensation pipe (2) and the damping pad (3) are all on the same axial direction.

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