CN113883348A - Composite sealing sleeve compensator - Google Patents
Composite sealing sleeve compensator Download PDFInfo
- Publication number
- CN113883348A CN113883348A CN202111265591.1A CN202111265591A CN113883348A CN 113883348 A CN113883348 A CN 113883348A CN 202111265591 A CN202111265591 A CN 202111265591A CN 113883348 A CN113883348 A CN 113883348A
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- China
- Prior art keywords
- sleeve body
- sealing
- wall
- compensator
- inner sleeve
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- 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
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/12—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement
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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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/26—Sealings between relatively-moving surfaces with stuffing-boxes for rigid sealing rings
- F16J15/30—Sealings between relatively-moving surfaces with stuffing-boxes for rigid sealing rings with sealing rings made of carbon
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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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
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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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
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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
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
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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
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/18—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings
Abstract
The invention relates to the technical field of sleeve compensators, and discloses a composite sealing sleeve compensator, which comprises: the device comprises an inner sleeve body and an outer sleeve body, wherein two ends of the inner sleeve body respectively correspond to a pipeline connecting end and a compensation end, and the compensation end is provided with a limiting component; the outer sleeve body is sleeved outside the inner sleeve body, and a pressing anti-falling mechanism corresponding to the limiting component is arranged; the outer annular wall of the limiting component is provided with a plurality of embedded grooves, the embedded sealing rings are fixedly embedded in the embedded grooves, the sealing effect is enhanced through composite sealing, the service life is long, the safety is high, the rotary floor area is small, the composite sealing type rotary compensator can be used for various pipelines of heat supply pipe networks such as buried pipelines, overhead pipelines or pipe galleries, and can also be used for various medium pipelines such as steam pipelines and hot water pipelines, the applicability is higher, the defects that a corrugated compensator has high requirement on the environment and poor safety, a rotary compensator and a spherical compensator occupy large area and cannot be directly buried are overcome, the sealing mode of other sleeve compensators is single, the application surface is narrow, and the like.
Description
Technical Field
The invention relates to the technical field of sleeve compensators, in particular to a composite sealed sleeve compensator.
Background
At present, the heat supply pipeline compensation mode can be mainly divided into two modes, namely a natural compensation mode and an artificial compensation mode. Natural compensation is a natural bend in a heat supply pipeline, and has the disadvantages that the pipeline generates transverse displacement when deformed, and the compensated pipeline section cannot be large. The manual compensation is to adopt a compensator for compensation, namely, the expansion of the compensator is utilized to adjust the axial expansion of the heat supply pipeline caused by the temperature difference change of the working medium.
Types of compensators are ripple compensators, sleeve compensators, spherical compensators, rotational compensators, etc.
The existing corrugated compensator is influenced by the content of chloride ions in a working medium, and the corrosion of the chloride ions to the corrugated pipe in the use process causes the occurrence of serious accidents such as leakage of the corrugated compensator and even pipe explosion;
the existing rotary compensator occupies a large space in pipeline arrangement and cannot be used in a direct-buried environment;
the existing spherical compensators must be arranged in pairs, are mainly used for overhead pipelines and cannot be used in a direct-buried environment;
the sealing mode of the existing sleeve compensator adopts a single sealing mode, and the existing sleeve compensator can not be used for steam pipelines and hot water pipelines simultaneously or can not be applied to buried pipelines, overhead pipelines or pipe gallery engineering simultaneously.
Therefore, it is an urgent need to solve the problem of providing a sleeve compensator with higher sealing performance and wider applicability.
Disclosure of Invention
Accordingly, the present invention is directed to a composite seal sleeve compensator that solves, at least in part, the above problems of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a composite seal sleeve compensator comprising: the device comprises an inner sleeve body and an outer sleeve body, wherein two ends of the inner sleeve body correspond to a pipeline connecting end and a compensation end respectively, and the compensation end is provided with a limiting component; the outer sleeve body is sleeved outside the inner sleeve body, a gap is formed between the inner wall of the outer sleeve body and the outer wall of the inner sleeve body, and a pressing anti-falling mechanism corresponding to the limiting component is arranged; the limiting component is a limiting convex ring, the limiting convex ring and the inner sleeve body are integrally welded, a plurality of embedding grooves are formed in the wall of the outer ring, and sealing rings are fixedly embedded in the embedding grooves.
Through the technical scheme, compared with the prior art, the invention discloses and provides the composite sealing sleeve compensator, which has the beneficial effects that:
the combined sealing is realized through a plurality of sealing rings that compress tightly anti-disengaging mechanism and outer rampart setting, strengthens sealed effect, has longe-lived, and the security is high to and advantages such as the rotor floor area is little, can be used to bury ground pipeline, in the various pipelines of heat supply pipe networks such as overhead pipeline or piping lane, also can be used to in various medium pipeline such as steam conduit and hot water pipeline, the suitability is stronger.
Preferably, in the above-mentioned composite seal sleeve compensator, the fitting groove has four grooves, two grooves in the middle are embedded with O-ring seals, and the other two grooves are embedded with YX-ring seals.
Preferably, in the above composite sealing sleeve compensator, the pressing anti-dropping mechanism includes an anti-dropping flange, a pressing bolt, a coupling flange and a sealing component;
the inner wall of the outer sleeve body is provided with a limiting groove corresponding to the sealing part, and the connecting flange is integrally connected to the end part of the outer wall of the outer sleeve body;
the inboard an organic whole of anticreep flange is connected with a spacing section of thick bamboo, the outside of cover barrel body including spacing barrel casing is established, and penetrates outer cover barrel body with between the interior cover barrel body, the anticreep flange passes through clamp bolt with the hookup flange is fixed, sealing member sets up outer cover barrel body with between the interior cover barrel body, and one end with spacing groove butt, the other end with spacing section of thick bamboo butt.
Preferably, in the above-mentioned composite sealing sleeve compensator, the sealing part includes a limiting baffle ring and a carbon fiber graphite ring, one end of the limiting baffle ring abuts against the groove wall of the limiting groove, and the other end of the limiting baffle ring abuts against the limiting cylinder through a plurality of carbon fiber graphite rings stacked in sequence.
Preferably, in the composite seal sleeve compensator described above, a reinforcing ring plate is provided at a position of the inner sleeve body near the pipe connection end.
Preferably, in the composite sealing sleeve compensator described above, the outer wall of the inner sleeve body is coated with a protective layer.
Preferably, in the above composite seal sleeve compensator, the inner wall of the outer sleeve body is provided with an anti-corrosion coating.
Preferably, in the above composite sealing sleeve compensator, a limiting frame is further included;
the spacing is equipped with a plurality ofly, and is a plurality of the spacing is all U-shaped, forms the circumference array and is in the outside of outer cover barrel, every two arms of spacing are fixed respectively outer cover barrel with on the outer wall of interior cover barrel.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram provided by the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, a composite seal sleeve compensator according to the present invention includes: the device comprises an inner sleeve body 1 and an outer sleeve body 2, wherein two ends of the inner sleeve body 1 correspond to a pipeline connecting end and a compensation end respectively, and a limiting component 10 is arranged at the compensation end; the outer sleeve body 2 is sleeved outside the inner sleeve body 1, a gap exists between the inner wall of the outer sleeve body 2 and the outer wall of the inner sleeve body 1, and a pressing anti-falling mechanism corresponding to the limiting component 10 is arranged.
In order to further optimize the technical scheme, the limiting component 10 is a limiting convex ring, the limiting convex ring and the inner sleeve body 1 are integrally welded, a plurality of embedding grooves are formed in the outer ring wall, and the sealing rings are fixedly embedded in the embedding grooves.
Specifically, the outer sleeve bodies 2 are all made of spiral welded pipes or rolled and processed by steel plates; the limiting convex ring and the inner sleeve body 1 are welded into a whole by adopting a submerged arc automatic welding technology, and the submerged arc automatic welding technology has the advantages of high welding speed, good welding seam quality and the like.
In order to further optimize the technical scheme, four embedding grooves are formed, two middle embedding O-shaped sealing rings 21 and two other embedding YX sealing rings 22.
Specifically, the embedding groove is formed by turning in a machining mode;
the O-shaped sealing ring 21 is made of 26 type self-reinforcing fluororubber, has excellent characteristics of heat resistance, corrosion resistance, tear resistance, ageing resistance, small friction force, high compression rebound rate and the like, is applicable to the temperature of minus 30-250 ℃, and can work for a long time at the temperature of 250 ℃;
the YX sealing ring 22 is mainly made of vinyl silicone rubber, not only has the characteristics of corrosion resistance, ageing resistance, small friction force and the like, but also has stronger compression permanent deformation resistance and excellent support property at high temperature;
through the combination of the O-shaped sealing ring and the YX sealing ring, a sealing structure with multiple excellent performances such as excellent air tightness, flame retardance, high temperature resistance, oxidation resistance, oil resistance, aromatic resistance and the like is formed.
In order to further optimize the technical scheme, the pressing anti-falling mechanism comprises an anti-falling flange 23, a pressing bolt 24, a connecting flange 25 and a sealing part 26;
the inner wall of the outer sleeve body 2 is provided with a limit groove corresponding to the sealing part 26, and the connecting flange 25 is integrally connected with the end part of the outer wall of the outer sleeve body 2;
the inboard an organic whole of anticreep flange 23 is connected with spacing section of thick bamboo 230, and the outside of the interior cover barrel 1 is established to spacing section of thick bamboo 230 cover to penetrate between the outer cover barrel 2 and the interior cover barrel 1, anticreep flange 23 is fixed with hookup flange 25 through clamp bolt 24, and sealing component 26 sets up between the outer cover barrel 2 and the interior cover barrel 1, and one end and spacing groove butt, the other end and the butt of spacing section of thick bamboo 230.
The leftmost end of the outer sleeve body 2 is welded with a connecting flange 25, the connecting flange 25 is integrated with the outer sleeve body 1 through welding, the end face of the connecting flange 25 is provided with uniform through holes, the end face of the anti-falling flange 23 corresponding to the connecting flange 25 is provided with the same number of through holes, and the connecting flange 25 is fixedly connected with the anti-falling flange 23 through a compression bolt 24.
In order to further optimize the above technical solution, the sealing component 26 includes a limit baffle ring 260 and a carbon fiber graphite ring 261, one end of the limit baffle ring 260 is abutted with the groove wall of the limit groove, and the other end is abutted with the limit cylinder 230 through a plurality of carbon fiber graphite rings 261 stacked in sequence.
Specifically, the carbon fiber graphite ring is formed by impregnating carbon fiber with heat-resistant silicone oil-free additives, graphite powder and other materials, adding metal wires for reinforcement, and weaving. The material has excellent performances of self-lubrication, wear resistance, high strength, excellent heat conductivity, corrosion resistance, chemical stability and the like; finally, the anti-drop flange 23 is installed, and a self-made tool is adopted to compact and press the sealing part 26 on a 500-ton hydraulic press, so that a constant sealing pressing force is ensured, and a complete sealing effect is achieved;
in order to further optimize the above technical solution, a reinforcement ring plate 11 is provided at a position of the inner sleeve body 1 near the pipe connection end.
Specifically, the inner sleeve body 1 is made of a spiral welded pipe or is formed by rolling a steel plate; the reinforcing ring plate 11 is welded and fixed on the outer side of the inner sleeve body 1, so that the roundness of the inner sleeve body is guaranteed, the rigidity of the inner sleeve body 1 is improved, and the coaxiality of the inner sleeve body and a pipeline during welding is guaranteed.
In order to further optimize the above solution, the outer wall of the inner sleeve 1 is coated with a protective layer 12.
Specifically, the thickness of the protective layer 12 is 25 micrometers, a teflon coating is adopted as a protective coating on the displacement stroke of the three carbon fiber graphite rings, the protective coating has the advantages of wear resistance, corrosion resistance, low friction coefficient (the friction coefficient is between 0.05 and 0.20), heat resistance, chemical resistance and the like, the protective coating is sprayed for three times, polyether sulfone coating is sprayed on the lowest layer, polyamide coating is sprayed on the middle layer, polytetrafluoroethylene coating is sprayed on the uppermost layer, and a composite protective coating is formed by the three spraying processes, so that the sliding surface where the three carbon fiber graphite rings are located is smooth, and good sealing performance is ensured.
In order to further optimize the technical scheme, the inner wall of the outer sleeve body 2 is provided with an anticorrosive coating 27.
Specifically, the thickness of the anti-corrosion coating 27 is 30 microns, namely hard chromium is plated on the displacement stroke of the limiting component 10 by adopting a CR-2000 hard chromium electroplating process, the hardness of the coating can reach HV900-1150, and the coating has the characteristics of high hardness, smoothness, wear resistance, corrosion resistance, long service life and the like.
In order to further optimize the technical scheme, the device also comprises a limiting frame 3;
By adopting the scheme, the pre-stretched compensation amount of the inner sleeve body 1 and the outer sleeve body 2 in the transportation process is ensured not to change, and the pre-stretched compensation amount is removed after the composite sealing sleeve compensator is welded with a pipeline, so that the method is very convenient.
Specifically, the anti-dropping flange 23 has the functions of pressing and dropping prevention:
the compaction is achieved as follows:
after the inner sleeve body 1 and the outer sleeve body 2 are welded and machined, the inner sleeve body 1 is installed inside the outer sleeve body 2, a connecting flange 25 is welded at the left end of the outer sleeve body at the inner hole of the outer sleeve body 2 and the outer wall cavity of the inner sleeve body 1, and a limiting stop ring 260 is installed at first, and then three carbon fiber graphite rings are installed and compacted;
the anti-dropping effect is realized by the following steps:
the limit stop ring 260 is installed inside the outer sleeve body 2, and because the end of the limit stop ring 260 is turned with a 20-degree inclined plane to match with the inclined plane angle of the inner wall of the outer sleeve body 2, when the inner sleeve 1 and the outer sleeve body 2 are axially displaced due to the medium temperature in the pipeline, the limit part 10 is leftwards displaced to the limit position, namely, the right end face of the limit stop ring 260 is limited, and cannot be pulled off, so that the first line of defense line for preventing the pulling off is provided.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A composite seal sleeve compensator, comprising: the device comprises an inner sleeve body (1) and an outer sleeve body (2), wherein two ends of the inner sleeve body (1) correspond to a pipeline connecting end and a compensation end respectively, and a limiting component (10) is arranged at the compensation end; the outer sleeve body (2) is sleeved outside the inner sleeve body (1), a gap exists between the inner wall of the outer sleeve body (2) and the outer wall of the inner sleeve body (1), and the pressing anti-falling mechanism corresponding to the limiting component (10) is arranged.
2. The compensator of claim 1, wherein the limiting component (10) is a limiting convex ring, the limiting convex ring is integrally welded with the inner sleeve body (1), a plurality of embedding grooves are formed in the outer ring wall, and the sealing ring is fixedly embedded in the embedding grooves.
3. A composite sealing sleeve compensator according to claim 2, wherein said engagement grooves are provided with four passages, two of the intermediate passages being fitted with O-rings (21) and the remaining two passages being fitted with YX-rings (22).
4. A composite sealing sleeve compensator according to claim 3, wherein the compression retaining mechanism comprises a retaining flange (23), a compression bolt (24), a coupling flange (25) and a sealing member (26);
the inner wall of the outer sleeve body (2) is provided with a limiting groove corresponding to the sealing part (26), and the connecting flange (25) is integrally connected to the end part of the outer wall of the outer sleeve body (2);
the inboard an organic whole of anticreep flange (23) is connected with spacing section of thick bamboo (230), the outside of cover barrel (1) including is established to spacing section of thick bamboo (230) cover, and penetrates outer cover barrel (2) with between the interior cover barrel (1), anticreep flange (23) are passed through clamp bolt (24) with attach flange (25) are fixed, sealing member (26) set up outer cover barrel (2) with between the interior cover barrel (1), and one end with spacing groove butt, the other end with spacing section of thick bamboo (230) butt.
5. A composite sealing sleeve compensator according to claim 4, wherein the sealing member (26) comprises a limit stop ring (260) and a carbon fiber graphite ring (261), one end of the limit stop ring (260) is abutted with the groove wall of the limit groove, and the other end is abutted with the limit cylinder (230) through a plurality of carbon fiber graphite rings (261) stacked in sequence.
6. A composite sealing sleeve compensator according to claim 1, c h a r a c t e r i z e d in that the inner sleeve body (1) is provided with a reinforcement ring plate (11) near the pipe connection end.
7. A composite sealing sleeve compensator according to claim 1, characterized by the outer wall of the inner sleeve body (1) being coated with a protective layer (12).
8. A composite sealing sleeve compensator according to claim 1, characterized in that the inner wall of the outer sleeve body (2) is provided with an anti-corrosion coating (27).
9. A composite sealing sleeve compensator according to claim 1, further comprising a spacing frame (3);
spacing (3) are equipped with a plurality ofly, and are a plurality of spacing (3) are all U-shaped, form the circumference array and are in the outside of outer cover barrel (2), every two arms of spacing (3) are fixed respectively outer cover barrel (2) with on the outer wall of interior cover barrel (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111265591.1A CN113883348A (en) | 2021-10-28 | 2021-10-28 | Composite sealing sleeve compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111265591.1A CN113883348A (en) | 2021-10-28 | 2021-10-28 | Composite sealing sleeve compensator |
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| Publication Number | Publication Date |
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| CN113883348A true CN113883348A (en) | 2022-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111265591.1A Pending CN113883348A (en) | 2021-10-28 | 2021-10-28 | Composite sealing sleeve compensator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056734A (en) * | 2019-03-14 | 2019-07-26 | 佛山市科蓝环保科技股份有限公司 | A kind of Novel pipeline compensator |
| CN110056734B (en) * | 2019-03-14 | 2024-04-30 | 佛山市科蓝环保科技股份有限公司 | Novel pipeline compensator |
-
2021
- 2021-10-28 CN CN202111265591.1A patent/CN113883348A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056734A (en) * | 2019-03-14 | 2019-07-26 | 佛山市科蓝环保科技股份有限公司 | A kind of Novel pipeline compensator |
| CN110056734B (en) * | 2019-03-14 | 2024-04-30 | 佛山市科蓝环保科技股份有限公司 | Novel pipeline compensator |
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