Adjustable limit rod compensator

Abstract

The utility model relates to the technical field of pull rod compensator, specifically relates to an adjustable limit pull rod compensator, including two groups left pipe, left pipe is connected with intermediate pipe through bellows, and the outside of left pipe is equipped with connecting disc, and the assembly limit pull rod between both sides connecting disc, and multiple groups annular array arrangement's auxiliary equipment are arranged between connecting disc and intermediate pipe, and the threaded groove is set up in the both ends of limit pull rod, and the limit stroke is adjustable through the cooperation of connecting disc slot and locking nut, and the auxiliary block on intermediate pipe supports and limits limit pull rod, and the auxiliary equipment is composed of connecting plate, upper plate, bottom plate and locking bolt, and the bottom plate sets up straight slot butt joint groove, and the device can quickly adjust limit pull rod stroke without disassembling core components, and adapts pipeline installation deviation and different working condition displacement demand, and the annular arrangement's auxiliary equipment can evenly disperse pipeline stress, and the straight slot structure is convenient for installing fine adjustment, and improves compensator carrying capacity and operating stability, and is applicable to petroleum chemical industry, heating and all kinds of pipeline systems.

Description

Technical Field

[0001] This utility model relates to the technical field of tie rod compensators, specifically to an adjustable limit tie rod compensator. Background Technology

[0002] During the operation of pipeline systems (such as petrochemical, heating, water supply and drainage systems), thermal expansion and contraction or displacement deformation inevitably occur due to factors such as changes in medium temperature, external environmental temperature differences, and the pipeline's own installation stress. If this deformation cannot be effectively compensated, it will lead to excessive axial, lateral, or angular stress inside the pipeline, which in turn can cause serious problems such as pipeline joint leaks, pipeline fractures, and even equipment damage. This not only affects the normal operation of the system but may also bring safety hazards and economic losses.

[0003] Currently, commonly used pipeline compensation devices in the industry include bellows compensators and sleeve compensators. Among them, bellows compensators are widely used due to their compact structure and strong compensation capacity. However, traditional bellows compensators have many limitations in practical use: Firstly, the limiting structure of most compensators is fixed, and it is impossible to flexibly adjust it according to the actual installation conditions and displacement requirements of the pipeline. When the pipeline installation deviation is large or the operating conditions change, the compensator is difficult to adapt and is prone to limiting failure or over-constraint. Secondly, the auxiliary fixing mechanism of traditional compensators is mostly an integrated design, which makes the installation and disassembly process cumbersome. Moreover, in long-term operation, the auxiliary connection parts are prone to loosening due to vibration, stress concentration and other problems, which leads to a decrease in the overall stability of the compensator, increasing maintenance costs and safety risks.

[0004] Furthermore, the existing compensator's limiting rod, connecting plate, and intermediate pipe have a complex assembly structure. Adjusting the limiting stroke often requires disassembling multiple components, making operation inconvenient and failing to meet the needs of rapid on-site adjustments. Simultaneously, the unreasonable distribution of auxiliary equipment fails to evenly distribute the stress transmitted through the pipeline, further shortening the compensator's service life and limiting its application in complex piping systems. Utility Model Content

[0005] Technical problems to be solved

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides an adjustable limit rod compensator, which can effectively solve the problems in the existing technology.

[0007] Technical solution

[0008] This utility model provides an adjustable limiting tie rod compensator, including two sets of left tubes. The middle parts of the left tubes on both sides are connected and fixed to the middle tube through corrugated pipes. A connecting plate is fixedly sleeved on the outer side of each set of left tubes. A limiting tie rod is fixedly sleeved between the connecting plates on both sides. The connecting plate on each side and the middle tube are connected and fixed by an auxiliary device. The auxiliary device includes a connecting plate fixed on the connecting plate and the middle tube, an upper plate and a bottom plate fixed between the two connecting plates. The upper plate and the bottom plate are fixedly connected by locking bolts.

[0009] Furthermore, multiple sets of auxiliary blocks are fixed in the middle of the intermediate tube, the middle of the limiting rod passes through the auxiliary blocks, and threaded grooves are opened on both sides of the limiting rod. A notch is opened on the side wall of the connecting plate, and the two ends of the limiting rod are locked in the notch by locking nuts.

[0010] Furthermore, the front end of the base plate is provided with a through groove, the front end of the upper plate is provided with a round hole, the locking bolt passes through the through groove and the round hole, and is locked and fixed by a locking nut.

[0011] Furthermore, the docking groove has a straight groove structure, and the auxiliary equipment is arranged in multiple sets in a ring array on the outer side of the connecting plate.

[0012] Furthermore, the bottom of the locking bolt is secured by a locking nut.

[0013] Beneficial effects

[0014] In this invention, the adjustable limit rod compensator features threaded grooves on both sides of the limit rod, combined with a notched structure on the side wall of the connecting disc. This allows the two ends of the limit rod to be flexibly locked and fixed by locking nuts, enabling convenient adjustment of the limit rod length. This design allows for rapid adjustment of the compensator's limit stroke based on actual pipeline installation deviations and operational displacement requirements, effectively adapting to pipeline compensation needs in different scenarios. It solves the problems of fixed limit structures and poor adaptability in traditional compensators, reducing installation difficulty and improving construction efficiency.

[0015] In this device, on the one hand, multiple sets of auxiliary blocks fixed in the middle of the intermediate pipe provide stable support for the limiting tie rod, preventing it from shifting or bending due to vibration and stress concentration during long-term operation, thus ensuring the stable operation of the limiting function. On the other hand, the auxiliary equipment adopts a combined structure of "connecting plate + upper plate + bottom plate," and is secured by locking bolts passing through the docking groove of the bottom plate and the round hole of the upper plate. The docking groove is designed with a straight groove structure, which not only facilitates fine-tuning of the position of the auxiliary equipment during installation to ensure precise docking of each component, but also disperses the stress transmitted by the pipeline during operation, reducing the risk of loosening at the connection points. At the same time, multiple sets of auxiliary equipment are arranged in a ring array on the outside of the connecting plate, which can evenly transmit the axial and lateral stress of the pipeline to all parts of the compensator, further improving the overall load-bearing capacity and operational stability of the compensator and extending its service life. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is an exploded view of the structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the auxiliary equipment in this utility model.

[0020] The labels in the diagram represent: 1. Left pipe; 11. Connecting plate; 111. Groove; 2. Corrugated pipe; 3. Middle pipe; 31. Auxiliary block; 32. Limiting rod; 33. Locking nut; 4. Auxiliary equipment; 41. Base plate; 411. Connecting plate; 412. Docking groove; 42. Top plate; 43. Locking bolt. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0022] The present invention will be further described below with reference to the embodiments.

[0023] Example: An adjustable limit rod compensator, see attached diagram. Figure 1 - Appendix Figure 3 It includes two sets of left pipes 1. The middle parts of the left pipes 1 on both sides are connected and fixed to the middle pipe 3 through corrugated pipes 2. The outer sides of the two sets of left pipes 1 are fitted with connecting plates 11. The connecting plates 11 on both sides are fitted with fixed limiting rods 32. The connecting plates 11 on each side and the middle pipe 3 are connected and fixed through auxiliary equipment 4. The auxiliary equipment 4 includes connecting plates 411 fixed on the connecting plates 11 and the middle pipe 3, upper plate 42 and bottom plate 41 fixed between the connecting plates 411 on both sides. The upper plate 42 and the bottom plate 41 are fixedly connected by locking bolts 43.

[0024] Multiple sets of auxiliary blocks 31 are fixed in the middle of the intermediate tube 3. The middle of the limiting rod 32 passes through the auxiliary block 31, and threaded grooves are opened on both sides of the limiting rod 32. A notch 111 is opened on the side wall of the connecting plate 11. The two ends of the limiting rod 32 are locked in the notch 111 by locking nuts 33.

[0025] During installation and maintenance, there is no need to disassemble the core components of the compensator (such as the bellows 2 and the intermediate pipe 3). The limit stroke can be adjusted simply by tightening and loosening the locking nuts 33 at both ends of the limit rod 32. The auxiliary equipment 4 can be inspected or replaced by removing the locking bolts 43 between the upper plate 42 and the bottom plate 41. This modular design greatly simplifies the operation process, reduces the labor intensity of maintenance personnel, and reduces downtime for maintenance, thus ensuring the long-term stable operation of the pipeline system. The multiple sets of auxiliary equipment distributed in a ring array can form a uniform stress transmission path, avoiding the problem of local stress concentration caused by uneven distribution of auxiliary equipment 4 in traditional compensators, and effectively mitigating the impact of pipeline thermal expansion and contraction or vibration on the compensator. At the same time, the straight groove structure of the bottom plate 41 and the connecting groove 412 can absorb vibration displacement within a certain range, reducing the impact of vibration on the connection parts, further improving the vibration resistance of the compensator, and enabling it to operate stably in pipeline systems with high-frequency vibration (such as pump outlet pipelines and compressor pipelines).

[0026] The front end of the base plate 41 has a through-hole groove 412, and the front end of the upper plate 42 has a round hole. The locking bolt 43 passes through the through-hole groove 412 and the round hole, and is locked and fixed by the locking nut 33. The through-hole groove 412 has a straight groove structure, and the auxiliary equipment 4 has multiple sets arranged in a ring array on the outside of the connecting plate 11. On the one hand, the multiple sets of auxiliary blocks 31 fixed in the middle of the intermediate pipe 3 provide stable support for the limit rod 32, preventing the limit rod 32 from shifting or bending due to vibration and stress concentration during long-term operation, and ensuring the stable operation of the limit function. On the other hand, the auxiliary equipment 4 adopts a combination structure of "connecting plate 411 + upper plate 42 + base plate 41", and is fastened by the locking bolt 43 passing through the through-hole groove 412 of the base plate 41 and the round hole of the upper plate 42. The through-hole groove 412 is designed as a straight groove structure, which not only facilitates the fine adjustment of the position of the auxiliary equipment 4 during installation to ensure accurate docking of each component, but also disperses the stress transmitted by the pipeline during operation and reduces the risk of loosening of the connection. Meanwhile, the auxiliary equipment 4 is arranged in multiple sets in a ring array on the outside of the connecting plate 11, which can evenly transfer the axial and lateral stress of the pipeline to various parts of the compensator, further improving the overall load-bearing capacity and operational stability of the compensator and extending its service life.

[0027] The bottom of the locking bolt 43 is fixed by the locking nut 33. This adjustable limit rod 32 compensator, through threaded grooves on both sides of the limit rod 32 and the notched groove 111 on the side wall of the connecting plate 11, allows the two ends of the limit rod 32 to be flexibly locked and fixed by the locking nut 33, achieving convenient adjustment of the length of the limit rod 32. This design can quickly adjust the limit stroke of the compensator according to the actual installation deviation of the pipeline and the displacement requirements of the working conditions, effectively adapting to the pipeline compensation needs in different scenarios. It solves the problems of fixed limit structure and poor adaptability of traditional compensators, reduces installation difficulty, and improves construction efficiency.

[0028] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. An adjustable limit rod compensator, characterized in that, It includes two sets of left tubes (1), and the middle part of the left tubes (1) on both sides is connected and fixed to the middle tube (3) through a corrugated pipe (2). The outer side of the two sets of left tubes (1) is fitted with a connecting plate (11). A fixed limiting rod (32) is fitted between the connecting plates (11) on both sides. The connecting plate (11) on each side and the middle tube (3) are connected and fixed through an auxiliary device (4). The auxiliary device (4) includes a connecting plate (411) fixed on the connecting plate (11) and the middle tube (3), an upper plate (42) fixed between the two connecting plates (411), and a bottom plate (41). The upper plate (42) and the bottom plate (41) are fixedly connected by a locking bolt (43).

2. The adjustable limit rod compensator according to claim 1, characterized in that, The middle tube (3) has multiple sets of auxiliary blocks (31) fixed in the middle. The middle of the limiting rod (32) passes through the auxiliary blocks (31), and threaded grooves are opened on both sides of the limiting rod (32). A notch (111) is opened on the side wall of the connecting plate (11). The two ends of the limiting rod (32) are locked in the notch (111) by locking nuts (33).

3. The adjustable limit rod compensator according to claim 1, characterized in that, The bottom plate (41) has a through-hole (412) at the front end, and the top plate (42) has a round hole at the front end. The locking bolt (43) passes through the through-hole (412) and the round hole, and is locked and fixed by the locking nut (33).

4. An adjustable limit rod compensator according to claim 3, characterized in that, The docking groove (412) has a straight groove structure, and the auxiliary equipment (4) is arranged in a ring array on the outside of the connecting plate (11).

5. An adjustable limit rod compensator according to claim 4, characterized in that, The bottom of the locking bolt (43) is fixed by a locking nut (33).

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