CN118423535B - Composite flexible compensation device - Google Patents
Composite flexible compensation deviceInfo
- Publication number
- CN118423535B CN118423535B CN202410482204.7A CN202410482204A CN118423535B CN 118423535 B CN118423535 B CN 118423535B CN 202410482204 A CN202410482204 A CN 202410482204A CN 118423535 B CN118423535 B CN 118423535B
- Authority
- CN
- China
- Prior art keywords
- flange
- rubber connecting
- connecting pipe
- pipe
- compensation device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
- F16L51/02—Expansion-compensation arrangements for pipe-lines making use of a bellows or an expansible folded or corrugated tube
- F16L51/025—Expansion-compensation arrangements for pipe-lines making use of a bellows or an expansible folded or corrugated tube with several corrugations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
本发明提供一种复合式挠性补偿装置，涉及管道设备技术领域，包括：第一法兰、第二法兰、金属波纹管、橡胶连接管、泵送机构和传输管道，金属波纹管和橡胶连接管同轴套设，金属波纹管的长度方向的两端分别与第一法兰和第二法兰密封连接，橡胶连接管的长度方向的两端分别与第一法兰和第二法兰密封连接，金属波纹管和橡胶连接管之间形成容纳空间，泵送机构经由传输管道连通至容纳空间，泵送机构能够将压力介质泵送至容纳空间。该装置能够充分发挥金属波纹管和橡胶连接管各自的优势，可以在高压波动管路系统中实现压力补偿，具有足够的使用范围。而且，金属波纹管和橡胶连接管能够彼此配合承压，有效提升使用寿命、减少维修频数，具有较好经济性。
This invention provides a composite flexible compensation device, relating to the field of pipeline equipment technology. It includes: a first flange, a second flange, a metal bellows, a rubber connecting pipe, a pumping mechanism, and a transmission pipeline. The metal bellows and the rubber connecting pipe are coaxially sleeved. Both ends of the metal bellows are sealed to the first and second flanges, respectively, and both ends of the rubber connecting pipe are also sealed to the first and second flanges, respectively. A receiving space is formed between the metal bellows and the rubber connecting pipe. The pumping mechanism is connected to this receiving space via the transmission pipeline, and the pumping mechanism can pump the pressure medium into the receiving space. This device can fully utilize the advantages of both the metal bellows and the rubber connecting pipe, achieving pressure compensation in high-pressure fluctuating pipeline systems, and has a wide range of applications. Moreover, the metal bellows and the rubber connecting pipe can cooperate to withstand pressure, effectively extending service life, reducing maintenance frequency, and exhibiting good economic efficiency.
Description
Technical Field
The invention relates to the technical field of pipeline equipment, in particular to a composite flexible compensation device.
Background
In industrial systems, piping structures are often provided when it is desired to transport materials such as steam, water, oil, etc. However, in practical application, due to thermal expansion, foundation settlement and the like, a flexible compensation device is often required to be arranged in pipeline equipment to realize pipeline deformation compensation, and in some specific occasions, vibration reduction and isolation of equipment can be realized by arranging the flexible compensation device in the pipeline equipment.
At present, the flexible compensation device adopted in the industrial field mainly comprises a metal corrugated pipe, a rubber pipe and the like, wherein the rubber pipe has good stability and long service life under alternating load, but has poor pressure resistance and safety reliability, and the metal corrugated pipe has strong pressure bearing capability, but is easy to fatigue damage under the action of alternating internal pressure. In the face of high-pressure and internal pressure-varying system pipelines, it is difficult for existing flexible compensation devices to meet normal use requirements.
Disclosure of Invention
The invention provides a composite flexible compensation device, which is used for solving the defect that the flexible compensation device in the prior art is difficult to meet the normal use requirement when facing a system pipeline with high pressure and variable internal pressure.
The invention provides a composite flexible compensation device which comprises a first flange, a second flange, a metal corrugated pipe, a rubber connecting pipe, a pumping mechanism and a transmission pipeline,
The corrugated metal pipe is coaxially sleeved with the rubber connecting pipe, two ends of the corrugated metal pipe in the length direction are respectively connected with the first flange and the second flange in a sealing mode, two ends of the rubber connecting pipe in the length direction are respectively connected with the first flange and the second flange in a sealing mode, an accommodating space is formed between the corrugated metal pipe and the rubber connecting pipe, the pumping mechanism is communicated to the accommodating space through the transmission pipeline, and the pumping mechanism can pump pressure medium to the accommodating space.
According to the composite flexible compensation device provided by the invention, the rubber connecting pipe is sleeved on the outer side of the metal corrugated pipe.
According to the composite flexible compensation device provided by the invention, the metal bellows is sleeved on the outer side of the rubber connecting pipe.
According to the composite flexible compensation device provided by the invention, the pressure medium is purified water.
According to the composite flexible compensation device provided by the invention, one side of the first flange, which faces the second flange, is provided with the first metal transition ring, one side of the second flange, which faces the first flange, is provided with the second metal transition ring, and two ends of the metal corrugated pipe are respectively connected with the first metal transition ring and the second metal transition ring in a sealing way.
According to the composite flexible compensation device provided by the invention, one side of the first flange, which faces the second flange, is provided with the first rubber connecting ring, one side of the second flange, which faces the first flange, is provided with the second rubber connecting ring, and two ends of the rubber connecting pipe are respectively connected with the first rubber connecting ring and the second rubber connecting ring in a sealing manner.
According to the composite flexible compensation device provided by the invention, the first flange is provided with the communication hole, one end opening of the communication hole is positioned between the metal corrugated pipe and the rubber connecting pipe and is communicated with the accommodating space, the other end opening of the communication hole is positioned on the peripheral wall of the first flange, and the transmission pipeline is connected to the other end opening of the communication hole.
According to the composite flexible compensation device provided by the invention, the communication hole comprises a transverse hole and a vertical hole, the transverse hole is arranged on the end face of the first flange, which faces the second flange, and extends along the thickness direction of the first flange, one end opening of the transverse hole is connected to the accommodating space, the vertical hole is arranged on the outer wall surface of the first flange and extends inwards along the radial direction of the first flange, one end opening of the vertical hole is connected with the transmission pipeline, and the other end opening of the vertical hole and the other end opening of the transverse hole are communicated in the first flange.
According to the composite flexible compensation device provided by the invention, the rubber connecting pipe is provided with a plurality of annular flanges extending along the circumferential direction of the rubber connecting pipe, and the annular flanges are arranged at intervals along the length direction of the rubber connecting pipe.
According to the composite flexible compensation device provided by the invention, the outer wall of the first flange is provided with the first flange structure which extends outwards along the radial direction of the first flange, the first flange structure extends along the circumferential direction of the first flange, and the first flange structure is provided with the mounting hole which penetrates along the length direction of the first flange;
The outer wall of the second flange is provided with a second flange structure extending outwards along the radial direction of the second flange, the second flange structure extends along the circumferential direction of the second flange, and the second flange structure is provided with a mounting hole penetrating along the length direction of the second flange.
The composite flexible compensation device provided by the invention comprises the first flange, the second flange, the metal corrugated pipe, the rubber connecting pipe, the pumping mechanism and the transmission pipeline, can fully exert the respective advantages of the metal corrugated pipe and the rubber connecting pipe, can realize pressure compensation in a high-pressure wave pipeline system, and has a sufficient application range. Moreover, the metal corrugated pipe and the rubber connecting pipe can be matched with each other for bearing pressure, so that the service life is effectively prolonged, the maintenance frequency is reduced, and the economic efficiency is better. In addition, when one of the metal corrugated pipe and the rubber connecting pipe is damaged, the other metal corrugated pipe and the rubber connecting pipe can still play a role in sealing, and leakage of hazardous substances can be prevented in a short time, so that the safety is higher.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a composite flexible compensation device in accordance with one embodiment of the invention;
Fig. 2 is a schematic structural view of a composite flexible compensation device according to still another embodiment of the present invention.
Reference numerals:
1. The device comprises a first flange, a second flange, a metal corrugated pipe, a rubber connecting pipe, a pumping mechanism, a conveying pipeline, a first metal transition ring, a second metal transition ring, a first rubber connecting ring, a second rubber connecting ring, a first flange, a second rubber connecting ring, a communication hole, a first flange structure, a second flange structure and a second flange structure.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In one embodiment according to the present invention, a composite flexible compensation device is provided that can be installed in a piping system that fully exploits the respective advantages of rubber, metal bellows, and that is particularly applicable to high pressure variable load piping systems. The composite flexibility compensation device in this embodiment is further described below with reference to fig. 1 and 2.
Specifically, as shown in FIG. 1, the composite flexibility compensation device in the present embodiment includes a first flange 1, a second flange 2, a metal bellows 3, a rubber connection pipe 4, a pumping mechanism 5, and a transmission pipe 6.
Wherein, the coaxial sleeve of metal bellows 3 and rubber connecting pipe 4 is established, and the both ends of metal bellows 3 length direction respectively with first flange 1 and second flange 2 sealing connection, the both ends of rubber connecting pipe 4 length direction respectively with first flange 1 and second flange 2 sealing connection, form accommodation space between metal bellows 3 and the rubber connecting pipe 4, pumping mechanism 5 communicates to accommodation space via transmission pipeline 6, and pumping mechanism 5 can pump pressure medium to accommodation space.
Illustratively, both the first flange 1 and the second flange 2 may be constructed of a metallic material. The first flange 1 and the second flange 2 may be constructed in a tubular structure having a certain length or a plate-like structure having a certain thickness and provided with through holes, and outer end surfaces of the first flange 1 and the second flange 2 remote from each other are capable of connecting pipes.
The metal bellows 3 may be made of carbon steel or stainless steel, etc., and the metal bellows 3 is constructed as a tube having a regular wave-like shape. In the present embodiment, both ends of the metal bellows 3 in the longitudinal direction are connected to the first flange 1 and the second flange 2 in a sealed manner, and may be connected by welding, for example.
The rubber connection pipe 4 may be made of rubber or the like, and the rubber connection pipe 4 is coaxially sleeved on the inner side or the outer side of the metal bellows 3. In the present embodiment, both ends of the rubber joint pipe 4 in the longitudinal direction are connected to the first flange 1 and the second flange 2 in a sealed manner, and may be connected by vulcanization, for example.
There is a gap between the metal bellows 3 and the rubber connection pipe 4, which is an accommodation space, and both ends of the accommodation space can be formed into a sealed space under the closure of the first flange and the second flange.
Further, in the present embodiment, the pumping mechanism 5 is connected to the accommodating space via the transmission pipe 6, the pumping mechanism 5 is capable of pumping a pressure medium into the accommodating space via the transmission pipe 6, and the pressure in the accommodating space can be controlled by means of the pressure medium.
In a practical application scenario, the first flange 1 and the second flange 2 may be used to install the composite flexible compensation device in a system pipeline with high pressure and variable internal pressure, and then, a pressure sensor is used to obtain the pressure in the system pipeline and transmit a corresponding pressure value to the pumping mechanism 5, so that the pumping mechanism 5 can pump the pressure medium into the accommodating space according to the pressure value, thereby adjusting the pressure in the accommodating space.
In a specific embodiment, as shown in fig. 1, when the metal bellows 3 is located inside the rubber connection pipe 4, if the pressure inside the system pipe is P1, the design pressure of the metal bellows 3 is P0, at which time the pumping mechanism 5 may pump the pressure medium into the receiving space with a pressure value of P2, and control P2 to be equal to P1-P0. Moreover, when the pressure sensor in the system line detects a change in P1, the pumping mechanism 5 provides a pressure P2 that also follows the change.
In this way, the pressure difference between the inside and outside of the metal bellows 3 can be always maintained at the design pressure P0, so that the metal bellows 3 is prevented from being fatigued and damaged, the service life of the metal bellows is prolonged, and the pressure applied by the system pipeline is mostly borne on the metal bellows 3, and the rubber connecting pipe 4 positioned at the outermost side is only used for bearing the pressure of the pressure medium and the fluctuation pressure of the system pipeline, so that the overall bearing level is not too high, and the service life is also prolonged.
In still another specific embodiment, as shown in fig. 2, when the metal bellows 3 is located outside the rubber connection pipe 4, if the pressure inside the system pipe is P1, at this time, the pumping mechanism 5 may pump the pressure medium into the accommodating space at the pressure value of P2, and control P2 to be equal to P1. If the design pressure of the metal bellows 3 is P0, when the pressure P1 inside the system pipeline reaches or is higher than the design pressure P0 of the metal bellows 3 outside, the pressure value P2 of the pumping mechanism 5 for pumping outside is equal to P0, so that the pressure fluctuation inside the system pipeline is borne by the rubber connecting pipe.
In this way, the pressure balance is maintained on the inner and outer sides of the rubber connecting pipe 4, the service life of the rubber connecting pipe 4 can be prolonged, and when large pressure fluctuation occurs in the system pipeline, the pressure can be borne by the rubber connecting pipe 4 and the metal bellows 3 on the outermost side together for compensation, and the service life is also enough.
Thus, the composite flexible compensation device according to the present embodiment can fully exhibit the advantages of the metal bellows 3 and the rubber connection pipe 4, and can realize pressure compensation in the high-pressure wave pipeline system, thereby having a sufficient range of application. Moreover, the metal corrugated pipe 3 and the rubber connecting pipe 4 can be matched with each other for bearing pressure, so that the service life is effectively prolonged, the maintenance frequency is reduced, and the economic efficiency is good. In addition, when one of the metal bellows 3 and the rubber connection pipe 4 is broken, the other can still play a role of sealing, and leakage of hazardous substances can be prevented in a short time, with higher safety.
In one embodiment, when it is required to transfer a substance that is not easily reacted with metal, for example, oil, as shown in fig. 1, the rubber connection tube 4 may be sleeved outside the metal bellows 3.
In yet another embodiment, when it is desired to transfer a substance that does not react easily with rubber, for example, water, as shown in fig. 2, the metal bellows 3 may be fitted over the rubber connection pipe 4.
In this embodiment, since the pressure medium in the accommodating space needs to be simultaneously in contact with the metal bellows 3 and the rubber connection pipe 4, pure water may be used as the pressure medium in order to avoid the reaction between the pressure medium and the metal bellows 3.
In this embodiment, in order to ensure that the metal bellows 3 can be effectively connected to the first flange 1 and the second flange 2, as shown in fig. 1, a first metal transition ring 7 is disposed on a side of the first flange 1 facing the second flange 2, a second metal transition ring 8 is disposed on a side of the second flange 2 facing the first flange 1, and both ends of the metal bellows 3 are respectively in sealing connection with the first metal transition ring 7 and the second metal transition ring 8.
Illustratively, one side of the first flange 1 in the length direction is used for connecting an external pipeline, the other side is provided with a first metal transition ring 7, and the first metal transition ring 7 may be integrally formed on the first flange 1. Then, one end of the metal bellows 3 is connected with the first metal transition ring 7 in a sealing way by welding.
Similarly, one side of the second flange 2 in the length direction is used for connecting an external pipeline, the other side is provided with a second metal transition ring 8, and the second metal transition ring 8 may be provided on the second flange 2 in an integrally formed manner. The other end of the metal bellows 3 is then sealed to the second metal transition ring 8 by means of welding.
Accordingly, in order to ensure that the rubber connection pipe 4 can be effectively connected to the first flange 1 and the second flange 2, as shown in fig. 1, a first rubber connection ring 9 is provided on a side of the first flange 1 facing the second flange 2, a second rubber connection ring 10 is provided on a side of the second flange 2 facing the first flange 1, and both ends of the rubber connection pipe 4 are respectively in sealing connection with the first rubber connection ring 9 and the second rubber connection ring 10.
Illustratively, one side of the first flange 1 in the length direction is used for connecting an external pipeline, the other side is provided with a first rubber connection ring 9, and the first rubber connection ring 9 may be provided on the first flange 1 in an integrally formed manner. After that, one end of the rubber connection pipe 4 is connected with the first rubber connection ring 9 in a sealing way by vulcanization.
Similarly, one side in the length direction of the second flange 2 is used for connecting an external pipe, the other side is provided with a second rubber connection ring 10, and the second rubber connection ring 10 may be provided on the second flange in an integrally formed manner. Then, the other end of the rubber connecting pipe 4 is connected with the second rubber connecting ring 10 in a sealing way by vulcanization.
As shown in fig. 1, when the rubber connection pipe 4 is sleeved outside the metal bellows 3, the first rubber connection ring 9 is disposed outside the first metal transition ring 7, and the second rubber connection ring 10 is disposed outside the second metal transition ring 8.
Or as shown in fig. 2, when the rubber connecting pipe 4 is sleeved on the inner side of the metal corrugated pipe 3, the first rubber connecting ring 9 is arranged on the inner side of the first metal transition ring 7, and the second rubber connecting ring 10 is arranged on the inner side of the second metal transition ring 8.
Further, in order to secure the connection of the transfer pipe 6 to the accommodation space, the first flange 1 is provided with a communication hole 11, one end opening of the communication hole 11 is located between the metal bellows 3 and the rubber connection pipe 4 and communicates to the accommodation space, the other end opening of the communication hole 11 is located at the outer peripheral wall of the first flange 1, and the transfer pipe 6 is connected to the other end opening of the communication hole 11.
Illustratively, as shown in fig. 1, the communication hole 11 has a first opening provided between the first metal transition ring 7 and the first rubber connection ring 9, and a second opening provided at the outer peripheral wall of the first flange 1, the inner wall of which is provided with a screw structure to which the transmission pipe 6 can be connected in a screw-connection manner.
In a specific embodiment, the communication hole 11 may include a lateral hole provided at an end face of the first flange 1 facing the second flange 2 and extending in a thickness direction of the first flange 1, one end opening of the lateral hole being connected to the accommodation space, and a vertical hole provided at an outer wall face of the first flange 1 and extending inward in a radial direction of the first flange 1, one end opening of the vertical hole being connected to the transmission pipe, the other end opening of the vertical hole and the other end opening of the lateral hole being communicated inside the first flange 1, as shown in fig. 1.
Thereby, after the communication hole 11 is connected to the transfer pipe 6, the pressure medium in the transfer pipe 6 can sufficiently enter the accommodation space.
In the present embodiment, the rubber connection pipe 4 is provided with a plurality of annular flanges extending in the circumferential direction thereof, the plurality of annular flanges being arranged at intervals in the length direction of the rubber connection pipe 4.
Through the above arrangement, the rubber connecting pipe 4 can be ensured to be elastically deformed effectively, and has enough structural strength.
Furthermore, both the first flange 1 and the second flange 2 can be connected to an external pipe by means of a bolt arrangement.
As an implementation, as shown in fig. 1 and 2, the outer wall of the first flange 1 is provided with a first flange structure 12 extending outwardly in the radial direction thereof, the first flange structure 12 being provided extending in the circumferential direction of the first flange 1, the first flange structure 12 being provided with a mounting hole penetrating in the length direction of the first flange 1.
Thus, in actual use, when it is desired to interconnect the first flange 1 with an external pipe, bolts may be passed through mounting holes in the first flange structure 12 and interengaged with the external pipe.
Similarly, the outer wall of the second flange 2 is provided with a second flange structure 13 extending outwardly in the radial direction thereof, the second flange structure 13 being provided extending in the circumferential direction of the second flange 2, the second flange structure 13 being provided with mounting holes penetrating in the length direction of the second flange 2.
Thus, in actual use, when it is desired to interconnect the second flange 2 with an external pipe, bolts may be passed through mounting holes in the second flange structure 13 and interengaged with the external pipe.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
It should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the technical solution described in the above-mentioned embodiments may be modified or some technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution of the embodiments of the present invention.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410482204.7A CN118423535B (en) | 2024-04-22 | 2024-04-22 | Composite flexible compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410482204.7A CN118423535B (en) | 2024-04-22 | 2024-04-22 | Composite flexible compensation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118423535A CN118423535A (en) | 2024-08-02 |
| CN118423535B true CN118423535B (en) | 2026-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410482204.7A Active CN118423535B (en) | 2024-04-22 | 2024-04-22 | Composite flexible compensation device |
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| CN (1) | CN118423535B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588705A (en) * | 2011-01-07 | 2012-07-18 | 李春光 | Pipeline compensator |
| CN210770950U (en) * | 2019-07-17 | 2020-06-16 | 江苏顺翔管道设备有限公司 | Bellows expansion joint suitable for high temperature environment |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1424028A (en) * | 1973-06-09 | 1976-02-04 | Munro Miller Fittings Ltd | Expansion joint for a pipe line |
| US3874708A (en) * | 1973-06-25 | 1975-04-01 | H E Wiese Inc | Flexible pipe connector for machinery protection |
| CN211344408U (en) * | 2020-01-02 | 2020-08-25 | 江苏卉欣波纹管业有限公司 | Inflatable corrugated pipe compensator |
| CN217402047U (en) * | 2022-01-24 | 2022-09-09 | 秦皇岛北方管业有限公司 | Pipeline compensator device capable of changing temperature of working medium |
| CN115046065B (en) * | 2022-06-01 | 2024-01-19 | 中船双瑞(洛阳)特种装备股份有限公司 | Straight pipe pressure balance type corrugated pipe expansion joint with distributed floating structure |
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2024
- 2024-04-22 CN CN202410482204.7A patent/CN118423535B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588705A (en) * | 2011-01-07 | 2012-07-18 | 李春光 | Pipeline compensator |
| CN210770950U (en) * | 2019-07-17 | 2020-06-16 | 江苏顺翔管道设备有限公司 | Bellows expansion joint suitable for high temperature environment |
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| Publication number | Publication date |
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| CN118423535A (en) | 2024-08-02 |
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