Corrosion-resistant universal joint compensator
Patent Information
- Application Number
- CN202522547757.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-01
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-12-01
AI Technical Summary
[0003]本实用新型的目的在于提供一种耐腐蚀万向铰链补偿器，以解决上述背景技术中提出的传统补偿器多为单向补偿结构，面对管道因温度变化、安装误差产生的横向偏移或角度偏转时，易出现补偿不足，导致管道应力集中、接口开裂，且传统补偿器的波纹管多为单一金属材质，内壁无专项防腐设计，在酸碱、盐雾等腐蚀性介质中，易出现内壁锈蚀、波纹焊缝穿孔，时常困扰着使用者的问题
[0010]与现有技术相比，本实用新型的有益效果是：该一种耐腐蚀万向铰链补偿器，采用十字销轴加交错铰链板的万向铰链结构，可同时吸收管道的轴向、横向、角向位移，解决传统补偿器仅能单一方向补偿、适配场景受限的问题；配合波纹管的柔性变形与补偿弹簧的缓冲作用，能适配不同工况下的管道位移需求，适用于化工、冶金、市政等多领域管道系统，且波纹管内壁的耐腐蚀涂层加保护层双重防护结构，有效隔离腐蚀性介质与金属部件，避免波纹管穿孔、锈蚀；同时，密封圈、补偿弹簧等部件均采用耐腐材质，整体耐腐蚀性大幅提升，提高了设备的使用寿命，减少频繁更换成本。
Smart Images
Figure CN224920024U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of universal hinge compensators, specifically a corrosion-resistant universal hinge compensator. Background Technology
[0002] A corrosion-resistant universal hinge compensator is a high-end pipeline connection component designed specifically for compensating for multi-directional displacement of pipelines in harsh corrosive environments. Based on the standard universal hinge compensator, it integrates strong corrosion resistance and inherent mechanical compensation capabilities through comprehensive upgrades in materials, structure, and surface treatment. It aims to significantly improve the long-term operational reliability and service life of industrial pipeline systems in chemical, marine, and wastewater treatment industries. This corrosion-resistant universal hinge compensator successfully integrates corrosion resistance into a high-performance pipeline compensation element through systematic materials science and structural design. It represents the latest achievement in pipeline flexible connection technology towards high reliability and long service life; however, existing corrosion-resistant universal hinge compensators still have certain shortcomings. While traditional corrosion-resistant universal hinge compensators can be used effectively, they are mostly unidirectional compensation structures. When faced with lateral offsets or angular deflections in pipelines caused by temperature changes or installation errors, they are prone to insufficient compensation, leading to stress concentration and joint cracking. Furthermore, the bellows of traditional compensators are mostly made of a single metal material without a specific anti-corrosion design on the inner wall. In corrosive media such as acids, alkalis, and salt spray, the inner wall is prone to rust and perforation of the bellows welds, which often troubles users. Utility Model Content
[0003] The purpose of this utility model is to provide a corrosion-resistant universal hinge compensator to solve the problems mentioned in the background art. Traditional compensators are mostly unidirectional compensation structures, which are prone to insufficient compensation when faced with lateral offset or angular deflection of pipelines caused by temperature changes or installation errors. This leads to stress concentration and joint cracking in the pipeline. In addition, the bellows of traditional compensators are mostly made of a single metal material and do not have a special anti-corrosion design on the inner wall. In corrosive media such as acids, alkalis, and salt spray, the inner wall is prone to corrosion and perforation of the bellows weld, which often troubles users.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a corrosion-resistant universal hinge compensator, comprising a compensation mechanism, a universal hinge mechanism, and a connecting compensation device. A universal hinge mechanism and a connecting compensation device are respectively provided on the left and right sides of the compensation mechanism, and the connecting compensation device is located outside the universal hinge mechanism. The compensation mechanism includes a bellows, a corrosion-resistant coating, and a protective layer. The corrosion-resistant coating is fixedly installed on the inner wall surface of the bellows, and the protective layer is fixedly installed on the inner wall surface of the corrosion-resistant coating. The universal hinge mechanism includes a first hinge plate, a first pull plate, a first slide groove, a cross pin, a fixing bolt, a second hinge plate, a second pull plate, and a second slide groove. The first hinge plate is fixedly installed on the right wall of the corrugated pipe, and two sets of first pull plates are fixedly installed on the left wall of the first hinge plate. The first pull plate is provided with a first slide groove, and a cross pin is provided between the two sets of first slide grooves. The universal hinge mechanism is equipped with a connection compensation device for pipe docking.
[0005] As a preferred embodiment of this utility model, the first hinge plate, the first pull plate, and the first sliding groove are symmetrically provided with a second hinge plate, a second pull plate, and a second sliding groove about the center of the cross pin, and the second hinge plate and the first hinge plate are staggered.
[0006] As a preferred embodiment of this utility model, the cross pin is fixedly installed to the first sliding groove on the first hinge plate by fixing bolts, and the cross pin is fixedly installed to the second sliding groove on the second hinge plate by fixing bolts.
[0007] As a preferred embodiment of this utility model, the connection compensation device includes a first flange, a first conveying pipe, a first connecting bolt, a first compensation spring, a first sealing ring, a second flange, a second conveying pipe, a second connecting bolt, a second compensation spring, and a second sealing ring. The first flange is slidably connected through the left side of the second hinge plate. The first conveying pipe is fixedly installed on the first flange. The first flange and the second hinge plate are fixedly installed by the first connecting bolt.
[0008] As a preferred embodiment of this utility model, a first compensating spring is sleeved on the first connecting bolt, one end of the first compensating spring is fixedly installed with the first flange, and the other end of the first compensating spring is fixedly installed with the second hinge plate, and a first sealing ring is provided between the first conveying pipe and the second hinge plate.
[0009] As a preferred embodiment of this utility model, the first flange, the first conveying pipe, the first connecting bolt, the first compensating spring, and the first sealing ring are symmetrically arranged about the center of the cross pin, and a second flange, a second conveying pipe, a second connecting bolt, a second compensating spring, and a second sealing ring are provided.
[0010] Compared with existing technologies, the beneficial effects of this utility model are as follows: This corrosion-resistant universal hinge compensator adopts a universal hinge structure with a cross pin and staggered hinge plates, which can simultaneously absorb axial, lateral, and angular displacements of pipelines, solving the problem that traditional compensators can only compensate in one direction and have limited adaptability. Combined with the flexible deformation of the bellows and the buffering effect of the compensation spring, it can adapt to the pipeline displacement requirements under different working conditions and is suitable for pipeline systems in multiple fields such as chemical, metallurgical, and municipal engineering. Moreover, the double protection structure of the corrosion-resistant coating and protective layer on the inner wall of the bellows effectively isolates corrosive media from metal components, preventing bellows perforation and rust. At the same time, components such as sealing rings and compensation springs are all made of corrosion-resistant materials, which greatly improves the overall corrosion resistance, increases the service life of the equipment, and reduces the cost of frequent replacements. Attached Figure Description
[0011] Figure 1 This is a front-view three-dimensional structural schematic diagram of the present invention; Figure 2 This is a front view disassembled structural diagram of the universal hinge mechanism of this utility model; Figure 3 This is a schematic diagram of the main view of the compensation mechanism of this utility model, broken down into its components. Figure 4 This is a front view split structure diagram of the connection compensation device of this utility model.
[0012] In the diagram: 1. Compensation mechanism; 101. Bellows; 102. Corrosion-resistant coating; 103. Protective layer; 2. Universal hinge mechanism; 201. First hinge plate; 202. First pull plate; 203. First slide groove; 204. Cross pin; 205. Fixing bolt; 206. Second hinge plate; 207. Second pull plate; 208. Second slide groove; 3. Connecting compensation device; 301. First flange; 302. First conveying pipe; 303. First connecting bolt; 304. First compensation spring; 305. First sealing ring; 306. Second flange; 307. Second conveying pipe; 308. Second connecting bolt; 309. Second compensation spring; 310. Second sealing ring. 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] Please see Figure 1-4This utility model provides a technical solution: a corrosion-resistant universal hinge compensator, including a compensation mechanism 1, a universal hinge mechanism 2, and a connecting compensation device 3. A universal hinge mechanism 2 and a connecting compensation device 3 are respectively provided on the left and right sides of the compensation mechanism 1, and the connecting compensation device 3 is located outside the universal hinge mechanism 2. The compensation mechanism 1 includes a bellows 101, a corrosion-resistant coating 102, and a protective layer 103. The corrosion-resistant coating 102 is fixedly installed on the inner wall surface of the bellows 101, and the protective layer 103 is fixedly installed on the inner wall surface of the corrosion-resistant coating 102. The universal hinge mechanism 2 includes a first hinge plate 201, a first pull plate 202, a first slide groove 203, a cross pin 204, a fixing bolt 205, a second hinge plate 206, a second pull plate 207, and a second slide groove 208. The first hinge plate 201 is fixedly installed on the right wall of the corrugated pipe 101, and two sets of first pull plates 202 are fixedly installed on the left wall of the first hinge plate 201. The first pull plate 202 is provided with a first slide groove 203, and a cross pin 204 is provided between the two sets of first slide grooves 203. The universal hinge mechanism 2 is equipped with a connection compensation device 3 for pipe docking.
[0015] The first hinge plate 201, the first pull plate 202, and the first slide groove 203 are symmetrically arranged with respect to the center of the cross pin 204. The second hinge plate 206, the second pull plate 207, and the second slide groove 208 are arranged alternately with respect to the first hinge plate 201.
[0016] The cross pin 204 is fixedly installed to the first sliding groove 203 on the first hinge plate 201 by fixing bolt 205, and the cross pin 204 is fixedly installed to the second sliding groove 208 on the second hinge plate 206 by fixing bolt 205.
[0017] The connecting compensation device 3 includes a first flange 301, a first conveying pipe 302, a first connecting bolt 303, a first compensation spring 304, a first sealing ring 305, a second flange 306, a second conveying pipe 307, a second connecting bolt 308, a second compensation spring 309, and a second sealing ring 310. The first flange 301 is slidably connected through the left side of the second hinge plate 206. The first conveying pipe 302 is fixedly installed on the first flange 301. The first flange 301 and the second hinge plate 206 are fixedly installed by the first connecting bolt 303.
[0018] A first compensating spring 304 is fitted on the first connecting bolt 303. One end of the first compensating spring 304 is fixedly installed with the first flange 301, and the other end of the first compensating spring 304 is fixedly installed with the second hinge plate 206. A first sealing ring 305 is provided between the first conveying pipe 302 and the second hinge plate 206.
[0019] The first flange 301, the first conveying pipe 302, the first connecting bolt 303, the first compensating spring 304, and the first sealing ring 305 are symmetrically arranged about the center of the cross pin 204. The second flange 306, the second conveying pipe 307, the second connecting bolt 308, the second compensating spring 309, and the second sealing ring 310 are arranged about the center of the cross pin 204.
[0020] Working principle: When using a corrosion-resistant universal hinge compensator, when the pipeline system experiences thermal expansion and contraction or foundation settlement causing angular displacement, the force is transmitted to the universal hinge mechanism 2 through the connecting compensation device 3. The core cross pin 204 of this universal hinge mechanism 2 allows for multi-plane relative rotation between the first hinge plate 201, the first pull plate 202, and the second hinge plate 206 and the second pull plate 207. This rotational motion is further converted into compression or tension on the bellows 101 in the compensation mechanism 1, thereby efficiently absorbing pipeline displacement. During connection and operation, the connection compensation device 3 plays a crucial role. The first sealing ring 305 and the second sealing ring 310 ensure a static seal of the medium at the interface between the delivery pipe and the hinge plate. Simultaneously, the first compensation spring 304 and the second compensation spring 309, fitted onto the first connecting bolt 303 and the second connecting bolt 308, provide continuous clamping force. This design not only compensates for preload relaxation caused by bolt creep or vibration, maintaining the sealing reliability of the flange connection, but also provides elastic buffering when the pipeline experiences minor displacement, preventing interface leakage. The corrosive medium flowing through the pipe comes into direct contact with the protective layer 103 and the corrosion-resistant coating 102, rather than the corrugated pipe 101 base material. This dual-protection design effectively isolates the corrugated pipe 101 from the corrosive environment, ensuring the integrity of the core flexible component during long-term service, fundamentally improving the product's durability, and thus enabling it to perform a series of tasks. Any content not described in detail in this specification is prior art known to those skilled in the art.
[0021] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A corrosion-resistant universal hinge compensator, comprising a compensation mechanism (1), a universal hinge mechanism (2), and a connecting compensation device (3), wherein a universal hinge mechanism (2) and a connecting compensation device (3) are respectively provided on the left and right sides of the compensation mechanism (1), and the connecting compensation device (3) is located outside the universal hinge mechanism (2); characterized in that: The compensation mechanism (1) includes a bellows (101), a corrosion-resistant coating (102) and a protective layer (103). The corrosion-resistant coating (102) is fixedly installed on the inner wall of the bellows (101), and the protective layer (103) is fixedly installed on the inner wall of the corrosion-resistant coating (102). The universal hinge mechanism (2) includes a first hinge plate (201), a first pull plate (202), a first slide groove (203), a cross pin (204), a fixing bolt (205), a second hinge plate (206), a second pull plate (207), and a second slide groove (208). The first hinge plate (201) is fixedly installed on the right wall of the corrugated pipe (101), and two sets of first pull plates (202) are fixedly installed on the left wall of the first hinge plate (201). The first pull plate (202) is provided with a first slide groove (203), and a cross pin (204) is provided between the two sets of first slide grooves (203). The universal hinge mechanism (2) is equipped with a connection compensation device (3) for pipe docking.
2. The corrosion-resistant universal hinge compensator according to claim 1, characterized in that, The first hinge plate (201), the first pull plate (202) and the first slide groove (203) are symmetrically arranged with respect to the cross pin (204) with the second hinge plate (206), the second pull plate (207) and the second slide groove (208) arranged alternately.
3. The corrosion-resistant universal hinge compensator according to claim 2, characterized in that, The cross pin (204) is fixedly installed to the first slide groove (203) on the first hinge plate (201) by fixing bolts (205), and the cross pin (204) is fixedly installed to the second slide groove (208) on the second hinge plate (206) by fixing bolts (205).
4. The corrosion-resistant universal hinge compensator according to claim 1, characterized in that, The connection compensation device (3) includes a first flange (301), a first conveying pipe (302), a first connecting bolt (303), a first compensation spring (304), a first sealing ring (305), a second flange (306), a second conveying pipe (307), a second connecting bolt (308), a second compensation spring (309), and a second sealing ring (310). The first flange (301) is slidably connected through the left side of the second hinge plate (206). The first conveying pipe (302) is fixedly installed on the first flange (301). The first flange (301) and the second hinge plate (206) are fixedly installed by the first connecting bolt (303).
5. A corrosion-resistant universal hinge compensator according to claim 4, characterized in that, A first compensating spring (304) is fitted on the first connecting bolt (303). One end of the first compensating spring (304) is fixedly installed with the first flange (301), and the other end of the first compensating spring (304) is fixedly installed with the second hinge plate (206). A first sealing ring (305) is provided between the first conveying pipe (302) and the second hinge plate (206).
6. A corrosion-resistant universal hinge compensator according to claim 5, characterized in that, The first flange (301), the first conveying pipe (302), the first connecting bolt (303), the first compensating spring (304), and the first sealing ring (305) are symmetrically arranged about the center of the cross pin (204) with respect to the second flange (306), the second conveying pipe (307), the second connecting bolt (308), the second compensating spring (309), and the second sealing ring (310).