CN105465530B - Pressure-balancing type sleeve expansion joint - Google Patents
Pressure-balancing type sleeve expansion joint Download PDFInfo
- Publication number
- CN105465530B CN105465530B CN201610032593.9A CN201610032593A CN105465530B CN 105465530 B CN105465530 B CN 105465530B CN 201610032593 A CN201610032593 A CN 201610032593A CN 105465530 B CN105465530 B CN 105465530B
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- Prior art keywords
- adapter
- ring
- pressure
- airtight
- hollow pipe
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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
-
- 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
- F16L27/125—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement having longitudinal and rotary movement
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
The present invention relates to a kind of pressure-balancing type sleeve expansion joint.The sleeve expansion joint is included in the first adapter, the second adapter, the hollow pipe ring of first the second adapter of adapter insertion；3rd adapter is extended after the section of big footpath, then it is axially extending go out path section；There is the endoporus of path section interior ring, outer end and the single port gland stretched to be connected；Single port gland inner pressure ring, inside stretches and airtight and watertight padding is filled between ring and inner pressure ring；Hollow pipe ring has internal projecting ring and outer bulge loop, the internal diameter of internal projecting ring and the dynamic cooperation of the first external diameter taken over, the dynamic cooperation of the internal diameter of the external diameter of outer bulge loop and the 3rd adapter；The end of hollow pipe ring is connected with twoport gland, twoport gland inner inserting ring and outer slotting ring；Airtight and watertight padding is filled respectively between internal projecting ring and inner inserting ring and between outer bulge loop and outer slotting ring；Cavity between rectangular hollow pipe ring and the 3rd adapter is communicated with the second adapter endoporus.Compact dimensions of the present invention, frictional force are small, be convenient to mount and dismount, and greatly prolong the first use life-span, it is ensured that the sealing reliability of long-term work.
Description
Technical field
The present invention relates to a kind of sleeve expansion joint, especially a kind of pressure-balancing type sleeve expansion joint belongs to fluid conveying
Pipeline technical field.
Background technology
Sleeve expansion joint is mainly used in heating field pipe-line system, for absorbing thermal walking, reduces pipe temperature stress.
Existing pressure-balancing type sleeve expansion joint is mainly based upon the F type structures recommended in GB/T12465-2007, and product absorbs heat
Pipeline internal pressure thrust can be born while displacement.
Chinese patent literature CN101900235A discloses a kind of Zero-thrust sleeve type compensator, it include left shell, inner tube,
Seal, right shell body, filler pipe and ring.Left shell, right shell body endoporus are provided with seal and ring, and the outer wall of correspondence seal is provided with
Filler pipe.Left shell and right shell body are set with the equal pipe of inner tube two ends and is connected.Inner tube and left shell, right shell body endoporus
The seal and czermak space of middle installation coordinate, and boss and the big nose end of right shell body of inner tube cooperatively form the piston knot with movement of inner pipe
Structure.The counter balance pocket being made up of right shell body inner chamber and outer wall of inner tube is provided with the right side of inner tube boss, outer wall of inner tube is provided with radial hole ditch
Logical counter balance pocket, the big nose end outer wall of left shell is provided with air-vent.The area of inner tube raised head face is equal to interior pipe orifice in the invention
Lateral cross-sectional area, the pressure for realizing counter balance pocket by radial hole changes with pressure medium, the thrust that inner tube boss right side is produced
Equal to pipe end blind plate or the blind plate thrust of elbow, and thrust direction on the contrary, offset each other.However, reflecting in practice
There is following subject matter in it：1) boss two ends are equal pipe so that left and right end seal diameter dimension must be consistent, limitation
Application；2) seal is arranged successively along product length direction left, center, right at three, and product length is longer；3) boss external diameter
Because causing right shell body diameter bigger than normal provided with seal between right shell body, and then cause straight with the integrated adpting flange of left shell
Footpath is bigger, and product contour dimension is huge；4) the annular seal space volume being made up of endoporus can not be adjusted, and cause seal to be only capable of using rubber
Deng elastomeric material, temperature in use, pressure are limited, and seal coordinates with interior ligament, seal loading structure is bad, easily lets out
Leakage, the product first use life-span is not grown, it is necessary to often safeguard；5) filler pipe fills in material and is only capable of local solution leakage problem, when interior
When portion's seal aging needs to change, it is necessary to take integrated adpting flange apart, cut open the connection of left shell, inner tube and field pipes
After weld seam, right shell body and inner tube could be extracted out, expose seal and changed, it is cumbersome；It additionally, there may be, endoporus composition
The parts such as annular seal space need forging to manufacture, and anufacturability is poor, and contour dimension is larger in addition, are not suitable for large-caliber product；
Etc. weak point.
The content of the invention
It is an object of the invention to：The subject matter existed for above-mentioned prior art, proposes a kind of seal diameter chi
Very little combination is flexible, and product length and contour dimension are compact, and seal cavity volume volume can be adjusted, and the pressure balance being convenient to mount and dismount
Type sleeve expansion joint, so as to greatly prolong the first use life-span, it is ensured that the sealing reliability of long-term work.
In order to reach object above, the basic technical scheme of pressure-balancing type sleeve expansion joint of the present invention is：Including docking
There is the second adapter of the hollow pipe ring in square-section, described first outside first adapter of outer the 3rd adapter that is connected in end and butt end
In the hollow pipe ring of the adapter of adapter insertion second；3rd adapter is extended after the big footpath section for containing hollow pipe ring, is radially received
Be reduced to neighbouring second adapter again it is axially extending go out path section；The endoporus of the path section has internal diameter and the second adapter external diameter
Ring is stretched in dynamic cooperation, outer end and the single port gland of the path section are connected；The single port gland, which has, inserts the path section
Endoporus and the inner pressure ring in the second cylindrical gap of adapter, interior stretch fill the second airtight and watertight padding between ring and inner pressure ring；In described
The endoporus of blank pipe ring and it is cylindrical respectively have internal projecting ring and outer bulge loop, the internal diameter of the internal projecting ring with first adapter external diameter move match somebody with somebody
Close, the internal diameter of the external diameter of the outer bulge loop and the 3rd adapter is dynamic to be coordinated；The end of the hollow pipe ring is connected with twoport gland, institute
State twoport gland cylindrical with the inner inserting ring for inserting hollow pipe ring endoporus and the first cylindrical gap of adapter, and the hollow pipe ring of insertion
With the outer slotting ring of interporal lacuna in the 3rd adapter；Divide between the internal projecting ring and inner inserting ring and between the outer bulge loop and outer slotting ring
Tian Chong first and the 3rd airtight and watertight padding；Cavity between the rectangular hollow pipe ring and the 3rd adapter in the second adapter with communicating.
Due at the two of inner inserting ring and convex interannular, outer slotting ring and evagination interannular airtight and watertight padding in product length direction
Inside and outside arranged superposed, substantially reduces product length.Inner pressure ring, inner inserting ring, the insertion depth of outer slotting ring can change, therefore close
The cavity volume volume-tunable of body is sealed, is adjusted on demand so as to the abrasion condition according to airtight and watertight padding, it is ensured that sealing, one is greatly prolonged
Secondary service life.If also, remove cover clamp, you can airtight and watertight padding is easily removed, maintenance is greatly facilitated and changes.
Further, the first airtight and watertight padding internal diameter square is equal to the 3rd with square sum of the second airtight and watertight padding internal diameter
Square of airtight and watertight padding external diameter.
Further, the section of first airtight and watertight padding is inner wide and outer narrow right-angled trapezium of the oblique angle towards the first adapter, institute
State inner wide and outer narrow right-angled trapezium of the section of the second airtight and watertight padding for the adapter of oblique angle direction second, section of the 3rd airtight and watertight padding
Face is wide outside and narrow inside right-angled trapezium of the oblique angle towards the first adapter.
Further, first adapter, the second adapter, the 3rd adapter contacts surface with airtight and watertight padding to be covered with surface respectively thick
Rugosity is less than Ra6.3 coating.
Further, the single port gland, the fastener at twoport gland of compressing is lined with disc spring pad.
Further, on the ring flat-plate of the twoport gland and the hollow pipe ring close to twoport gland side be respectively equipped with
The passage that air is communicated.
Further, guide shell and second adapter grafting of first adapter by liner.
Further, be connected gusset between the big footpath section and radial contraction of the 3rd adapter.
Further, means of deflation and steam trap connection are provided with the big footpath section of the 3rd adapter.
Brief description of the drawings
The present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of the embodiment of the present invention one.
Fig. 2 is the structural representation of the embodiment of the present invention two.
Embodiment
Embodiment one
The pressure-balancing type sleeve expansion joint of the present embodiment is as shown in figure 1, basic structure is to include outside butt end by adding
The first of connected 3rd adapter 4 of backing plate 1-1 i-steel component 7
There is the hollow pipe ring 2-2 in square-section the second adapter 2, the first adapter 1 passes through liner outside adapter 1 and butt end
Guide shell 8 insertion second adapter hollow pipe ring 2-2 in.The big footpath section 4-1 for containing hollow pipe ring is extended in 3rd adapter 4
Afterwards, radial contraction is to neighbouring second adapter 2, then it is axially extending go out path section 4-3.Supportted between big footpath section 4-1 and radial contraction
There is the gusset 4-2 of triangle.There is the path section 4-3 endoporus internal diameter and the interior of the dynamic cooperation of the external diameter of the second adapter 2 to stretch ring 4-4,
Path section 4-3 outer end is connected by the fastener 9 on flange flange and single port gland 5.Single port gland 5 has insertion path section
4-3 endoporus and the pressure ring 5-1 in the cylindrical gap of the second adapter 2, inside stretch and fill the second airtight and watertight padding between ring 4-4 and pressure ring 5-1
3-2.Hollow pipe ring 2-2 endoporus and it is cylindrical respectively have internal projecting ring 2-3 and outer bulge loop 2-4, internal projecting ring 2-3 internal diameter and first
The external diameter of adapter 1 is dynamic to be coordinated, outer bulge loop 2-4 external diameter and the dynamic cooperation of the internal diameter of the 3rd adapter 4.Hollow pipe ring 2-2 end leads to
Cross fastener to be connected with twoport gland 6, the twoport gland 6, which has, inserts hollow pipe ring 2-2 endoporus and the cylindrical gap of the first adapter 1
Inner inserting ring 6-1, and cylindrical outer slotting ring 6-2 with interporal lacuna in the 3rd adapter 4 of the hollow pipe ring 2-2 of insertion.Internal projecting ring 2-3 with
The first airtight and watertight padding 3-1 is filled respectively between inner inserting ring 6-1 and between outer bulge loop 2-4 and outer slotting ring 6-2 and the 3rd sealing is filled out
Expect 3-3.Cavity between rectangular hollow pipe ring 2-2 and the 3rd adapter 4 is by passage H with being communicated in the second adapter 2.
The above first takes over the structure connected with the 3rd big intersegmental use backing plate in footpath of adapter, i-steel component, fastener can
So that the 3rd adapter right part annulus area blind flange force is transferred to the first adapter, the first adapter blind flange force, I-steel connection side are balanced
Formula can be that welding can also be fastener connection.Illustrated example connects for fastener, and the first adapter is by increasing backing plate, in backing plate
On open bolt hole reach fastener connect.3rd adapter does not contact not pressure-bearing with medium, therefore can directly open bolt hole not
Backing plate need to be increased.
For equilibrium product internal pressure thrust, in the cavity and the second adapter 2 between rectangular hollow pipe ring 2-2 and the 3rd adapter 4
After hole is communicated, pressure medium is introduced at the second airtight and watertight padding 3-2 and the 3rd airtight and watertight padding 3-3.Theory analysis understands that sealing is filled out
The effective area that material effective diameter is determined directly affects reasoning balance, the first airtight and watertight padding internal diameter d1, the second airtight and watertight padding internal diameter
D2, the 3rd airtight and watertight padding outside diameter d 3 are respectively its effective diameter, and the area of a circle directly determined is its effective area.Structure design
When determine on rectangular hollow pipe ring 2-2 the 3rd airtight and watertight padding 3-3 external diameter φ d3 at outer bulge loop effective area and second connect
The difference for the effective area that the second airtight and watertight padding 3-2 internal diameter φ d2 at ring are determined is stretched in pipe 2, equal on rectangular hollow pipe ring 2-2
The effective area that the first airtight and watertight padding 3-1 internal diameter φ d1 at internal projecting ring are determined, i.e. the first airtight and watertight padding internal diameter square with the
Square sum of two airtight and watertight padding internal diameters is equal to square of the 3rd airtight and watertight padding external diameter, can balance the left end of the first adapter 1 and second
The right-hand member internal pressure thrust of adapter 2.
The effective diameter of first airtight and watertight padding and the second airtight and watertight padding can be with identical, can also be different, and it combines flexible, gram
Take and generally believed in the past " the first airtight and watertight padding identical must could balance internal pressure thrust with the second airtight and watertight padding effective diameter "
Technology prejudice.Therefore, the diameter of the first adapter and the diameter of the second adapter can flexibly be selected according to actual conditions, it is not necessary to phase
Together, it is only necessary to which the annular effective area for adjusting outer bulge loop and convex interannular on the hollow pipe ring in square-section is transversal equal to the second adapter
Area can balance internal pressure thrust.The present embodiment is particularly suitable for use in the inconsistent occasion of product two ends pipe diameter, such as pipeline
The positions such as reducer, close equipment oral area.In addition, rectangular hollow pipe ring evagination ring diameter is substantially interior with the big footpath section of the 3rd adapter
Footpath is rectangular hollow pipe ring outside diameter structure compared to the 3rd traditional airtight and watertight padding effective diameter quite, and diameter dimension reduces at this
More than 50% airtight and watertight padding thickness, and need not integrated adpting flange, product diameter gabarit is reduced significantly.
In addition, the present embodiment also has following design feature：
1) the first adapter, the second adapter, the 3rd adapter contact surface with airtight and watertight padding and are covered with surface roughness respectively and be less than
Ra6.3 coating.Also, due to there is slide displacement in use, the exposed surface of coating is respectively equipped with from single port gland and twoport
Gland it is axially extending go out protection pipe 5-3,6-3 and 6-4, protection pipe 5-3,6-3 and 6-4 with plating lamellar spacing coordinate, therefore protection
Coating surface, makes it be corroded without dirt and not.Coating can select zinc, chromium, polytetrafluoroethylene (PTFE) etc. according to working media.
2) single port gland, the fastener 9 of twoport gland are compressed and is lined with disc spring pad, thus when pine occurs in fastener pretightning force
Pretightning force can be automatically replenished after relaxation.First airtight and watertight padding 3-1 section is inner wide and outer narrow right angle ladder of the oblique angle towards the first adapter
Shape, the 3rd airtight and watertight padding 3-3 section is the right-angled trapezium wide outside and narrow inside of the adapter of oblique angle direction first, the second airtight and watertight padding 3-2
Section for oblique angle towards the second adapter inner wide and outer narrow right-angled trapezium, its oblique angle respectively with inner pressure ring 5-1, inner inserting ring 6-1, outer
The inclined-planes of slotting ring 6-2 corresponding positions coincide, thus can ensure to apply at gland relatively small axial power can produce it is larger to filler
Thrust.
3) on the ring flat-plate of twoport gland 6 and the second adapter 2 rectangular hollow pipe ring 2-2 close to the side of twoport gland 6,
The passage H communicated with air is respectively equipped with, so that under the influence of preventing medium temperature, air pressure becomes in rectangular hollow pipe ring 2-2
Change and have a negative impact to security.Means of deflation and steam trap connection are provided with the big footpath section of 3rd adapter, so as to scene
Pipeline is deflated or hydrophobic use.
It was verified that the first adapter of the present embodiment 1 is connected integral by i-steel component 7 and the 3rd adapter 4, with square
The hollow pipe ring 2-2 of tee section the second adapter 2 is comprising in entirety herein, and the first adapter 1 and the second adapter 2 are respectively as product
Two ends, can be slided with axially free each other, and pressure medium place of arrival has airtight and watertight padding at three to carry out pressure-bearing stop.Twoport
Gland it is axially extending go out protection pipe and fixing mechanism between and first adapter second adapter between have equivalent length axial direction
Compression clearance Lc.There is axial tension gap L e between the rectangular hollow pipe ring of second adapter and the ring flat-plate of the 3rd adapter.Axially press
Contracting gap L c can prevent product from occurring excess in displacement, cause sealing property to decline；Drawing gap Le can ensure product in fixation
It will not infinitely be stretched and be damaged during stent failure.Therefore, product can be slided while pressure bearing and seal with axially free,
And it is capable of the internal pressure thrust of equalizing main.It is compressed axially spacing Lc and stretches the motion model that spacing Le limits the second adapter 2
Enclose, further ensure that product safety.The trapezoidal structure of cavity volume volume of airtight and watertight padding, and 9 groups of fastener include disc spring pad,
Sealing is further ensured that, the first use life-span is greatly prolonged, as long as also, dismounting gland, you can airtight and watertight padding is easily removed,
Maintenance is greatly facilitated to change.
Embodiment two
The basic structure of the present embodiment is similar with embodiment one, is considered as a kind of special construction of embodiment.It is distinguished
It is the first adapter 1 identical with the diameter of the second adapter 2, the first airtight and watertight padding 3-1 and the second airtight and watertight padding 3-2 effective diameter phase
Together, for pipe diameter identical continuous segment, the same various advantageous effects with embodiment one.
It was verified that above example sealing, axially of not only meeting that conventional pressure Balance-type Sleeve Compensator has
Slide displacement, balance internal pressure thrust performance, with more seal diameter dimension combination flexibly, the first adapter and the second tube diameter
Combination is flexible, and product length and contour dimension are compact, and seal cavity volume volume can be adjusted, and encapsulant is unrestricted, assembly and disassembly side
Just, manufacturing process can both be forged, and superior function can also be welded etc., so as to greatly prolong the product first use life-span, really
Protect the sealing reliability of long-term work.
In addition to the implementation, the present invention can also have other embodiment, such as：Second tube diameter is less than rectangular hollow
Internal projecting ring in pipe ring, and then cause the second tube diameter to be less than the structure of the first tube diameter；When product diameter is smaller or
When two tube diameters are smaller, when outer bulge loop and internal projecting ring diameter difference is smaller, rectangular hollow pipe ring can use solid construction；I-shaped
Steel member can be other load-carrying members, it would however also be possible to employ connected first adapter of the method for welding and the big footpath section of the 3rd adapter etc.
Structure.All use equivalent substitutions or the technical scheme of equivalent transformation formation, all fall within the protection domain of application claims.
Claims (9)
1. a kind of pressure-balancing type sleeve expansion joint, it is characterised in that：First including connected 3rd adapter (4) outside butt end connects
Manage second adapter (2) outside (1) and butt end with the hollow pipe ring in square-section (2-2), the first adapter insertion second
In the hollow pipe ring of adapter；3rd adapter is extended behind the big footpath section (4-1) for containing hollow pipe ring, and radial contraction is to neighbouring
Second adapter again it is axially extending go out path section (4-3)；There is the endoporus of the path section internal diameter to be moved with the second adapter external diameter
Ring (4-4) is stretched in coordinating, outer end and the single port gland (5) of the path section are connected；The single port gland has insertion described
Path section endoporus and the pressure ring in the second cylindrical gap of adapter, interior stretch fill the second airtight and watertight padding between ring and pressure ring；It is described
The endoporus of hollow pipe ring and it is cylindrical there is internal projecting ring (2-3) and outer bulge loop (2-4) respectively, the internal diameter of the internal projecting ring connects with first
The external diameter of pipe is dynamic to be coordinated, and the internal diameter of the external diameter of the outer bulge loop and the 3rd adapter is dynamic to be coordinated；The end of the hollow pipe ring with it is double
Mouth gland (6) is connected, and the twoport gland has the inner inserting ring (6- for inserting hollow pipe ring endoporus and the first cylindrical gap of adapter
, and the cylindrical outer slotting ring (6-2) with interporal lacuna in the 3rd adapter of the hollow pipe ring of insertion 1)；Between the internal projecting ring and inner inserting ring
And first and the 3rd airtight and watertight padding, the hollow pipe ring in square-section and are filled between the outer bulge loop and outer slotting ring respectively
Cavity between three adapters in the second adapter with communicating.
2. pressure-balancing type sleeve expansion joint according to claim 1, it is characterised in that：The first airtight and watertight padding internal diameter
Square for square being equal to the 3rd airtight and watertight padding external diameter with square sum of the second airtight and watertight padding internal diameter.
3. pressure-balancing type sleeve expansion joint according to claim 2, it is characterised in that：Section of first airtight and watertight padding
Face is inner wide and outer narrow right-angled trapezium of the oblique angle towards the first adapter, and the section of second airtight and watertight padding connects for oblique angle towards second
The inner wide and outer narrow right-angled trapezium of pipe, the section of the 3rd airtight and watertight padding is terraced towards the right angle wide outside and narrow inside of the first adapter for oblique angle
Shape.
4. pressure-balancing type sleeve expansion joint according to claim 3, it is characterised in that：First adapter, second connect
Pipe, the 3rd adapter contact surface with airtight and watertight padding and are covered with the coating that surface roughness is less than Ra6.3 respectively.
5. pressure-balancing type sleeve expansion joint according to claim 4, it is characterised in that：The single port gland, twoport pressure
Fastener at lid is lined with disc spring pad.
6. pressure-balancing type sleeve expansion joint according to claim 5, it is characterised in that：On the ring flat-plate of the twoport gland
And the hollow pipe ring is respectively equipped with the passage communicated with air close to twoport gland side.
7. pressure-balancing type sleeve expansion joint according to claim 6, it is characterised in that：First adapter passes through liner
Guide shell and the second adapter grafting.
8. pressure-balancing type sleeve expansion joint according to claim 7, it is characterised in that：The big footpath section of 3rd adapter
With the gusset that is connected between radial contraction.
9. pressure-balancing type sleeve expansion joint according to claim 8, it is characterised in that：The big footpath section of 3rd adapter
On be provided with means of deflation and steam trap connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610032593.9A CN105465530B (en) | 2016-01-18 | 2016-01-18 | Pressure-balancing type sleeve expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610032593.9A CN105465530B (en) | 2016-01-18 | 2016-01-18 | Pressure-balancing type sleeve expansion joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105465530A CN105465530A (en) | 2016-04-06 |
| CN105465530B true CN105465530B (en) | 2017-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610032593.9A Active CN105465530B (en) | 2016-01-18 | 2016-01-18 | Pressure-balancing type sleeve expansion joint |
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| Country | Link |
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| CN (1) | CN105465530B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013773A (en) * | 2017-05-10 | 2017-08-04 | 宁波天生密封件有限公司 | Sealing and connecting device |
| CN110259946B (en) * | 2019-05-30 | 2024-04-26 | 北京高能时代环境技术股份有限公司 | Main shaft sealing structure |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2190218Y (en) * | 1994-03-31 | 1995-02-22 | 马学军 | Assembled non-thrust compensator |
| CN2236063Y (en) * | 1995-12-25 | 1996-09-25 | 彭国伟 | Conic double-sealing thrust-less compensator |
| CN201310699Y (en) * | 2008-11-12 | 2009-09-16 | 许恒源 | Non-thrust balance type telescopic compensator |
| CN101900235B (en) * | 2010-07-29 | 2013-03-06 | 江苏贝特管件有限公司 | Zero-thrust sleeve type compensator |
| KR101280826B1 (en) * | 2010-12-15 | 2013-07-02 | 박성희 | coupler for double pipe |
| CN202647042U (en) * | 2012-05-07 | 2013-01-02 | 甘肃晨光管业有限公司 | Direct-current type thrust-free self-sealing sleeve compensator |
| CN202901675U (en) * | 2012-10-08 | 2013-04-24 | 江苏恒丰波纹管有限公司 | Maintenance-free external pressure directly-buried expansion joint |
| CN204879189U (en) * | 2015-07-09 | 2015-12-16 | 泉州市玉杰旋转接头金属软管有限公司 | Direct -burried direct current does not have thrust compensator |
| CN205504315U (en) * | 2016-01-18 | 2016-08-24 | 航天晨光股份有限公司 | Pressure balance jacket section of thick bamboo compensator |
-
2016
- 2016-01-18 CN CN201610032593.9A patent/CN105465530B/en active Active
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| CN105465530A (en) | 2016-04-06 |
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Effective date of registration: 20200326 Address after: No.8, Chenxin Road, Jiangyan Economic Development Zone, Taizhou City, Jiangsu Province Patentee after: Jiangsu Xin Xin bellows Co., Ltd. Address before: 211100 No. 188 middle Tianyuan Road, Jiangning economic and Technological Development Zone, Nanjing, Jiangsu Patentee before: AEROSUN Corp. |
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