CN111594679A - End face sealing structure of rotation compensator and rotation compensator - Google Patents

End face sealing structure of rotation compensator and rotation compensator Download PDF

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Publication number
CN111594679A
CN111594679A CN202010568403.1A CN202010568403A CN111594679A CN 111594679 A CN111594679 A CN 111594679A CN 202010568403 A CN202010568403 A CN 202010568403A CN 111594679 A CN111594679 A CN 111594679A
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CN
China
Prior art keywords
annular
boss
sealing
stage
annular groove
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.)
Pending
Application number
CN202010568403.1A
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Chinese (zh)
Inventor
洪磊
洪亮
尹明华
朱爱春
王荣
吴秀华
曹广金
黄志娟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Better Pipe Fitting Co ltd
Original Assignee
Jiangsu Better Pipe Fitting Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiangsu Better Pipe Fitting Co ltd filed Critical Jiangsu Better Pipe Fitting Co ltd
Priority to CN202010568403.1A priority Critical patent/CN111594679A/en
Publication of CN111594679A publication Critical patent/CN111594679A/en
Pending legal-status Critical Current

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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
    • F16L27/08—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe
    • F16L27/0804—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another
    • F16L27/0808—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements extending coaxially for some distance from their point of separation
    • 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
    • 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
    • F16J15/168—Sealings between relatively-moving surfaces which permits material to be continuously conveyed
    • 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
    • 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
    • F16J15/324—Arrangements for lubrication or cooling of the sealing itself
    • 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
    • F16J15/3268—Mounting of sealing rings
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Devices (AREA)

Abstract

An end face sealing structure of a rotary compensator and a rotary compensator adopting the structure. The end face sealing structure comprises an annular inner boss arranged on the inner surface of the outer sleeve and an annular outer boss arranged on the outer surface of the inner sleeve, wherein the part of one surface of the annular inner boss adjacent to the annular outer boss is concave inwards to form a two-stage coaxial annular groove, and the diameter of a first-stage annular groove positioned on the inner side of the annular outer boss is smaller than that of a second-stage annular groove positioned on the outer side of the annular outer boss; one side of the corresponding annular outer boss ring adjacent to the annular inner boss partially protrudes to form a first step, and the part which does not protrude is a second step; a sealing ring with the shape matched with the two-stage annular groove is arranged between the first step of the annular outer boss and the concave part of the annular inner boss, and a flexible sealing element is arranged between the second step of the annular outer boss and the annular inner boss. The invention can effectively delay the ablation amount of the sealing material at high temperature, reduce the loss of the sealing material in an assembly gap of the rotary compensator in a working state, and obviously improve the sealing effect.

Description

End face sealing structure of rotation compensator and rotation compensator
Technical Field
The invention relates to an end face sealing structure of a rotary compensator and the rotary compensator.
Background
At present, rotary compensators are increasingly widely used in heat pipelines. The rotary compensator has the advantages of high safety performance, convenience in design, large compensation amount, high economical efficiency of pipeline operation, diversified installation modes and types and the like, and is a product which is preferred by design houses and application units such as thermal power plants and the like. The main technical core of the rotary compensator lies in the sealing technology, and although people are always improving the sealing performance of the rotary compensator, the rotary compensator still has the possibility of leakage in the working process, and the reasons for the leakage are as follows:
1. ablation in an aerobic state at high temperature.
The rotary compensator operates at a high temperature for a long time, and the ablation amount of the sealing material (graphite, etc.) in a high-temperature aerobic state is reduced in volume due to contact with oxygen, thereby causing leakage. Therefore, controlling the amount of contact between the sealing filler and oxygen is one of the most important means for ensuring long-term sealing.
2. The filler is worn during operation.
The inner pipe and the outer sleeve of the rotary compensator cannot be absolutely smooth (namely, the friction coefficient is 0), so that the packing is abraded due to the relative rotation of the inner pipe and the outer sleeve when the rotary compensator works, part of the packing is easily lost from an assembly gap due to the fact that the packing is broken into pieces and powder, the volume of the packing in a sealing cavity is reduced, the sealing pressing force is reduced, and leakage occurs.
3. Wear from oxidation of the seal cavity surfaces.
After the rotary compensator is used for a long time, under the influence of medium adverse factors (such as chloride ions, humidity and temperature) in a pipeline, a contact surface of a sealing cavity and a sealing material is corroded to form unevenness, and the packing is easily abraded under the working state of the rotary compensator, so that part of the sealing packing is in a fragment powder state and is easily lost from an assembly gap, the volume of the packing in the sealing cavity is reduced, the sealing pressing force is reduced, and leakage is caused.
4. The chemical reaction of the seal packing with the media (high temperature steam, high temperature hot water, etc.) is lost.
Because the medium can react with the sealing filler at high temperature (for example, C + H)2O (high temperature) ═ CO + H2) The solid volume of the sealing filler is reduced, the sealing performance is reduced, and leakage is easy to occur.
5. And (5) scouring the sealing packing by the medium under a high-pressure state.
Under the working condition, the medium in the high-temperature and high-pressure state in the rotary compensator easily enters the sealing cavity from the assembly gap to form strong impact force on the sealing filler, and the sealing filler can be lost under the flushing of the high-temperature and high-pressure medium after long-term use, so that the sealing performance is reduced.
Therefore, it is an objective of those skilled in the art to further improve the sealing performance of the rotary compensator.
Disclosure of Invention
In order to effectively delay the ablation amount of the sealing material at high temperature and reduce the loss of the sealing material in an assembly gap of the rotary compensator in a working state, the invention provides an end face sealing structure of the rotary compensator with better sealing performance and the rotary compensator.
The end face sealing structure of the end face sealing structure rotary compensator for the rotary compensator comprises an annular inner boss arranged on the inner surface of an outer sleeve and an annular outer boss arranged on the outer surface of the inner sleeve, wherein the adjacent surface of the annular inner boss and the annular outer boss is locally concave to form a two-stage coaxial annular groove, and the diameter of a first-stage annular groove positioned on the inner side of the annular outer boss is smaller than that of a second-stage annular groove positioned on the outer side of the annular outer boss; one side of the corresponding annular outer boss ring adjacent to the annular inner boss partially protrudes to form a first step, and the part which does not protrude is a second step; a sealing ring with the shape matched with the two-stage annular groove is arranged between the first step of the annular outer boss and the concave part of the annular inner boss, and a flexible sealing element is arranged between the second step of the annular outer boss and the annular inner boss
The rotary compensator adopts the end face sealing structure and comprises an inner pipe, an outer sleeve, a reducer pipe and a sealing and pressing flange, wherein the outer sleeve is sleeved on the inner pipe, one end of the inner pipe extends into the outer sleeve, the sealing and pressing flange is sleeved on the inner pipe, one end of the sealing and pressing flange extends into the outer sleeve, an annular inner boss is arranged on the inner surface of the outer sleeve, an annular outer boss is arranged on the outer surface of the inner pipe, and sealing filler is arranged between the annular inner boss and one end of the sealing and pressing flange extending into the outer sleeve; the part of one surface of the annular inner boss adjacent to the annular outer boss is recessed to form a two-stage coaxial annular groove, wherein the diameter of the first-stage annular groove positioned on the inner side of the annular outer boss is smaller than that of the second-stage annular groove positioned on the outer side of the annular outer boss; one side of the corresponding annular outer boss ring adjacent to the annular inner boss partially protrudes to form a first step, and the part which does not protrude is a second step; a sealing ring with the shape matched with the two-stage annular groove is arranged between the first step of the annular outer boss and the concave part of the annular inner boss, and a flexible sealing element is arranged between the second step of the annular outer boss and the annular inner boss.
In order to further improve the sealing performance, a plurality of concentric third annular grooves are formed in the surface of the second step of the annular outer boss and the surface of the annular inner boss corresponding to the second step of the annular outer boss. Therefore, as the flexible sealing element is usually made of graphite and other materials with better ductility, on one hand, the flexible sealing element can be pressed to form certain extension deformation and fill the toothed annular groove by applying enough pressure in the assembling process, thereby forming better end face sealing, effectively preventing the invasion of external media, reducing the oxidation penetration of steam or hot water in a pipeline to the sealing filler and reducing the leakage probability of the rotary compensator. On the other hand, in the use process, as the inner pipe and the outer pipe move towards each other under the pressure of the medium, further pressure is applied to the flexible sealing element, and the flexible sealing element further tightly fills the third toothed annular groove, so that better end face sealing is formed.
Furthermore, the section of the third annular groove is V-shaped.
In order to solve the potential safety hazard problem caused by the butt joint of the outer sleeve and the reducer pipe in a welding mode, the outer sleeve and the reducer pipe are of an integrally formed integrated structure.
In order to avoid the sealing filler from generating a gap due to normal abrasion in long-term use so as to influence the sealing performance of the whole rotary compensator, the outer sleeve is provided with a sealing filler filling device.
In order to prevent the product from generating reverse dislocation and the displacement of the sealing ring and the flexible sealing element arranged between the inner and outer annular bosses in the process of engineering installation, a limiting block is arranged in the reducer pipe.
The sealing ring is arranged between the inner boss and the outer boss, so that good sealing can be formed, the invasion of external media is effectively prevented, the oxidation penetration of steam or hot water in a pipeline to sealing filler is reduced, and the leakage probability of the rotary compensator is reduced. Because the whole cross-section of sealing ring is the type of dogleg, forms the structure of taking the boss, and the boss just in time inlays in the two-stage recess of the outer boss of annular, and this kind of cooperation structure can play fine positioning action to the sealing ring, can ensure that the sealing ring can not the drunkenness between the outer boss of annular inner boss and appearance, keeps seal structure's stability. Meanwhile, the flexible sealing material arranged between the inner boss and the outer boss forms another end face seal, the flexible sealing material can be heated and expanded under high temperature when the rotary compensator is in a working state, the annular inner boss and the annular outer boss can move oppositely under the action of medium pressure in the pipeline, so that further pressure is applied to the flexible sealing element, the flexible sealing element is further tightly filled in the toothed second annular groove, and the sealing effect is further improved; moreover, the flexible sealing element made of graphite has good lubricity and is beneficial to relative rotation between the inner pipe and the outer pipe.
The invention forms double end face seal on the sealing structure, namely two end face seals, if the first-stage seal fails, the second-stage seal can still realize sealing, and can effectively prevent leakage caused by failure of dense seal due to oxidation penetration of the medium to the sealing filler.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a partially enlarged view of portion D of fig. 1.
Fig. 3 is a schematic structural diagram of embodiment 2 of the present invention.
In the drawings 1-3, 1 is an inner pipe, 2 is a stud, 3 is a nut, 4 is a gasket, 5 is a sealing and pressing flange, 6 is an outer sleeve, 7 is sealing filler, 8 is an annular inner boss, 9 is a sealing ring, 10 is a flexible sealing element, 11 is an annular outer boss, 11-1 is a first step, 11-2 is a second step, 12 is a limiting block, 13 is a reducer pipe, 14 is a first-stage annular groove, 15 is a second-stage annular groove, 16 is a third-stage annular groove, and 17 is a filling device.
Detailed Description
The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the present invention when taken in conjunction with the accompanying drawings. The drawings are not intended to be to scale, emphasis instead being placed upon illustrating the principles of the embodiments.
Example 1
As shown in fig. 1-2, the rotary compensator of this embodiment includes an inner tube 1, an outer sleeve 6, a reducer 13, and a sealing and pressing flange 5, where the outer sleeve 6 is sleeved on the inner tube 1, one end of the inner tube 1 extends into the outer sleeve 6, the sealing and pressing flange 5 is sleeved on the inner tube 1, and one end of the sealing and pressing flange extends into the outer sleeve 6, and the two are connected through a stud 2, a nut 3, and a gasket 4. The outer sleeve 6 and the reducer pipe 13 are integrally formed. An annular inner boss 8 is arranged on the inner surface of the outer sleeve 6, an annular outer boss 11 is arranged on the outer surface of the inner pipe 1, and a sealing filler 7 (graphite is used as the sealing filler in the embodiment) is arranged between the annular inner boss 8 and one end, extending into the outer sleeve 6, of the sealing pressing flange 5.
The adjacent surface of the annular inner boss 8 and the annular outer boss 8 is locally concave to form a two-stage coaxial annular groove, wherein the diameter of a first-stage annular groove 14 positioned on the inner side of the annular outer boss 8 is smaller than that of a second-stage annular groove 15 positioned on the outer side; one side of the corresponding annular outer convex platform ring 11 adjacent to the annular inner convex platform 8 is partially convex to form a first step 11-1, and the part which is not convex is a second step 11-2. The surface of the second step of the annular outer boss (11) and the surface of the corresponding position of the annular inner boss (8) and the second step of the annular outer boss (11) are provided with a plurality of concentric third annular grooves (16) with V-shaped cross sections. A sealing ring 9 with the shape matched with the two-stage annular groove is arranged between the first step 11-1 of the annular outer boss 11 and the concave part of the annular inner boss 8, and a flexible sealing element 10 is arranged between the second step of the annular outer boss 11 and the annular inner boss 8.
In order to prevent the product from dislocating in the opposite direction and the displacement and the falling of the sealing ring and the flexible sealing piece arranged between the inner and the outer annular bosses in the engineering installation process, a limiting block 12 is arranged in the reducer pipe 13.
Example 2
As shown in fig. 3, the basic structure of the present embodiment is the same as that of embodiment 1, except that:
in order to keep good sealing performance, 4-30 injection ports are uniformly distributed on the outer sleeve 6 along the same circumference at the position corresponding to the sealing filler 7, a radial through hole arranged in each injection port is communicated with a transverse hole at the waist part, the outer end of each radial through hole is provided with a screw plug with a hole, and the screw plug arranged in the transverse hole traverses the radial through hole to form a sealing filler filling device 17 of a valve structure. When the rotary compensator is used, if the sealing performance is reduced and leakage occurs, the screw plug arranged at the outer end of the injection opening can be removed on line, then the screw plug in the transverse hole is rotated, the hole on the screw plug is communicated with the radial through hole, and the injection opening is supplemented with sealing filler by using a pressure gun. After the supplement is finished, firstly screwing the screw plug in the transverse hole, then pulling out the pressure gun, and then reinstalling the screw plug at the outer end of the inlet. Therefore, the sealing performance of the rotary compensator can be timely recovered by replenishing the sealing filler on line.

Claims (9)

1. The end face sealing structure of the rotary compensator comprises an annular inner boss (8) arranged on the inner surface of an outer sleeve (6) and an annular outer boss (11) arranged on the outer surface of an inner pipe (1), and is characterized in that the part of one surface, adjacent to the annular inner boss (8), of the annular inner boss (8) and the annular outer boss (8) is recessed inwards to form two-stage coaxial annular grooves, wherein the diameter of a first-stage annular groove (14) positioned on the inner side of the annular outer boss (8) is smaller than that of a second-stage annular groove (15) positioned on the outer side; one surface of the corresponding annular outer boss ring (11) adjacent to the annular inner boss (8) is locally protruded to form a first step (11-1), and the part which is not protruded is a second step (11-2); a sealing ring (9) with the shape matched with the two-stage annular groove is arranged between the first step (11-1) of the annular outer boss (11) and the concave part of the annular inner boss (8), and a flexible sealing element (10) is arranged between the second step of the annular outer boss (11) and the annular inner boss (8).
2. The end face seal structure of a rotary compensator according to claim 1, characterized in that the surface of the second step of the annular outer boss (11) and the surface of the annular inner boss (8) corresponding to the second step of the annular outer boss (11) are provided with a plurality of concentric third annular grooves (16).
3. An end face seal structure of a rotation compensator as claimed in claim 2, wherein the third annular groove has a V-shaped cross section.
4. A rotary compensator comprises an inner tube (1), an outer sleeve (6), a reducer pipe (13) and a sealing and pressing flange (5), wherein the outer sleeve (6) is sleeved on the inner tube (1), one end of the inner tube (1) extends into the outer sleeve (6), the sealing and pressing flange (5) is sleeved on the inner tube (1), one end of the inner tube extends into the outer sleeve (6), the inner surface of the outer sleeve (6) is provided with an annular inner boss (8), the outer surface of the inner tube (1) is provided with an annular outer boss (11), a sealing filler (8) is arranged between the annular inner boss (8) and one end of the sealing pressing flange (5) extending into the outer sleeve (6), it is characterized in that the adjacent surface of the annular inner boss (8) and the annular outer boss (8) is locally concave inwards to form a two-stage coaxial annular groove, wherein the diameter of the first stage annular groove (14) positioned on the inner side of the annular outer boss (8) is smaller than that of the second stage annular groove (15) positioned on the outer side; one surface of the corresponding annular outer boss ring (11) adjacent to the annular inner boss (8) is locally protruded to form a first step (11-1), and the part which is not protruded is a second step (11-2); a sealing ring (9) with the shape matched with the two-stage annular groove is arranged between the first step (11-1) of the annular outer boss (11) and the concave part of the annular inner boss (8), and a flexible sealing element (10) is arranged between the second step of the annular outer boss (11) and the annular inner boss (8).
5. A rotary compensator according to claim 4, wherein the surface of the second step of the outer annular projection (11) and the surface of the inner annular projection (8) corresponding to the second step of the outer annular projection (11) are provided with a plurality of concentric third annular grooves (16).
6. The end face seal structure of claim 4, wherein said third annular groove is V-shaped in cross-section.
7. Rotational compensator according to claim 4, characterized in that the outer sleeve (6) and the reducer pipe (13) are of one-piece integral construction.
8. Rotary compensator according to claim 4, characterized in that the outer sleeve (6) is provided with a sealing packing filling device (17).
9. Rotary compensator according to claim 4, characterized in that a stop block (12) is arranged in the reducer pipe (13).
CN202010568403.1A 2020-06-19 2020-06-19 End face sealing structure of rotation compensator and rotation compensator Pending CN111594679A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010568403.1A CN111594679A (en) 2020-06-19 2020-06-19 End face sealing structure of rotation compensator and rotation compensator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010568403.1A CN111594679A (en) 2020-06-19 2020-06-19 End face sealing structure of rotation compensator and rotation compensator

Publications (1)

Publication Number Publication Date
CN111594679A true CN111594679A (en) 2020-08-28

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CN202010568403.1A Pending CN111594679A (en) 2020-06-19 2020-06-19 End face sealing structure of rotation compensator and rotation compensator

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1626865A (en) * 2003-10-24 2005-06-15 Gat传动技术有限公司 Radial rotary connection
CN201359169Y (en) * 2009-03-10 2009-12-09 陈墅庚 Novel anticorrosive rotary compensator for pipes
CN202937953U (en) * 2012-12-18 2013-05-15 王国成 Two-stage sealing rotation compensator
CN203880282U (en) * 2014-06-06 2014-10-15 江苏贝特管件有限公司 Shock-resistant rotary compensator
CN205669538U (en) * 2016-06-06 2016-11-02 人本集团有限公司 The sealing mechanism of linear bearing
CN206958460U (en) * 2017-03-30 2018-02-02 绍兴市水联管业有限公司 A kind of improved composite tee joint of structure
CN107664240A (en) * 2016-07-29 2018-02-06 江苏金通机械有限公司 The self-contained whirl compensator of new three sealing
CN110657308A (en) * 2019-09-14 2020-01-07 江苏永力管道有限公司 Combined multi-way end face sealing rotary compensator
CN212584501U (en) * 2020-06-19 2021-02-23 江苏贝特管件有限公司 End face sealing structure of rotation compensator and rotation compensator

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1626865A (en) * 2003-10-24 2005-06-15 Gat传动技术有限公司 Radial rotary connection
CN201359169Y (en) * 2009-03-10 2009-12-09 陈墅庚 Novel anticorrosive rotary compensator for pipes
CN202937953U (en) * 2012-12-18 2013-05-15 王国成 Two-stage sealing rotation compensator
CN203880282U (en) * 2014-06-06 2014-10-15 江苏贝特管件有限公司 Shock-resistant rotary compensator
CN205669538U (en) * 2016-06-06 2016-11-02 人本集团有限公司 The sealing mechanism of linear bearing
CN107664240A (en) * 2016-07-29 2018-02-06 江苏金通机械有限公司 The self-contained whirl compensator of new three sealing
CN206958460U (en) * 2017-03-30 2018-02-02 绍兴市水联管业有限公司 A kind of improved composite tee joint of structure
CN110657308A (en) * 2019-09-14 2020-01-07 江苏永力管道有限公司 Combined multi-way end face sealing rotary compensator
CN212584501U (en) * 2020-06-19 2021-02-23 江苏贝特管件有限公司 End face sealing structure of rotation compensator and rotation compensator

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