CN105465530A - Pressure balance type sleeve compensator - Google Patents
Pressure balance type sleeve compensator Download PDFInfo
- Publication number
- CN105465530A CN105465530A CN201610032593.9A CN201610032593A CN105465530A CN 105465530 A CN105465530 A CN 105465530A CN 201610032593 A CN201610032593 A CN 201610032593A CN 105465530 A CN105465530 A CN 105465530A
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- China
- Prior art keywords
- ring
- adapter
- stuffing box
- pressure
- box packing
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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
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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
- 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 invention relates to a pressure balance type sleeve compensator. The pressure balance type sleeve compensator comprises a first connecting pipe and a second connecting pipe, wherein the first connecting pipe is inserted into a hollow pipe ring of the second connecting pipe. A third connecting pipe extends to form a large-diameter section and then axially extends to form a small-diameter section. An inner hole formed in the small-diameter section is provided with an inner extending ring, and the outer end is fixedly connected with a simple-port gland. The simple-port gland is provided with an inner press ring, and a sealing filler is filled between the inner extending ring and the inner press ring. The hollow pipe ring is provided with an inner convex ring and an outer convex ring, wherein the inner diameter of the inner convex ring is in movable fit with the outer diameter of the first connecting pipe, and the outer diameter of the outer convex ring is in movable fit with the inner diameter of the third connecting pipe. The end of the hollow pipe ring is fixedly connected with a double-port gland, and the double-port gland is provided with an inner plug ring and an outer plug ring. A sealing filler is filled between the inner convex ring and the inner plug ring and between the outer convex ring and the outer plug ring. The cavity between the rectangular hollow pipe ring and the third connecting pipe is communicated with an inner hole formed in the second connecting pipe. The pressure balance type sleeve compensator is compact in size, small in frictional force and convenient to mount and dismount, one-time service life is greatly prolonged, and the sealing reliability of long-term work is ensured.
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 delivery pipeline technical field.
Background technique
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 on the F type structure of recommending in GB/T12465-2007, and product can bear pipeline internal pressure thrust while absorbing thermal walking.
Chinese patent literature CN101900235A discloses a kind of Zero-thrust sleeve type compensator, and it comprises left shell, interior pipe, Sealing, right shell body, filler pipe and ring.Left shell, right shell body endoporus are provided with Sealing and ring, and the outer wall of corresponding Sealing is provided with filler pipe.Interior pipe two ends equal pipe be set with left shell and right shell body and connect.Interior pipe coordinates with the Sealing installed in left shell, right shell body endoporus and czermak space, and the boss of interior pipe coordinates with the large nose end of right shell body the piston structure formed with movement of inner pipe.Be provided with the counter balance pocket be made up of right shell body inner chamber and outer wall of inner tube on the right side of interior pipe boss, outer wall of inner tube is provided with radial hole and links up counter balance pocket, and the large nose end outer wall of left shell is provided with air hole.In in this invention, the area of pipe raised head face equals the transverse cutting area of interior pipe orifice, the pressure being realized counter balance pocket by radial hole is changed with pressure medium, the thrust that interior pipe boss right side produces equals the blind plate thrust of pipeline end blind plate or elbow, and thrust direction is contrary, offsets each other.But, reflect in practice that it exists following subject matter: 1) boss two ends are equal pipe, make left and right end seal diameter dimension unanimously, application area must be limited; 2) three place's Sealings arrange successively along left, center, right, product length direction, and product length is longer; 3) cause right shell body diameter bigger than normal because be provided with Sealing between boss external diameter and right shell body, and then cause larger with the integrated adpting flange diameter of left shell, product overall sizes is huge; 4) the Seal cage volume be made up of endoporus cannot adjust, and causes Sealing only can with elastomeric materials such as rubber, and serviceability temperature, pressure are limited, Sealing coordinates with interior ligament, seal loading structure is bad, easy leakage, product is not long for a working life, needs often to safeguard; 5) filler pipe is filled in material and only can locally be addressed the leakage concern, when inner seal is aging need to change time, integrated adpting flange must be taken apart, after cutting open the attachment weld of left shell, interior pipe and field pipes, right shell body and interior pipe could be extracted out, expose Sealing and change, extremely bother; Exist in addition, the component such as the Seal cage of endoporus composition need forging manufacture, and anufacturability is poor, and overall sizes is comparatively large in addition, is not suitable for large-caliber product; Etc. deficiency.
Summary of the invention
The object of the invention is to: the subject matter existed for above-mentioned prior art, a kind of seal diameter dimension combination is proposed flexible, product length and overall sizes compact, seal cavity volume volume can adjust, and simple load and unload pressure-balancing type sleeve expansion joint, thus greatly extend a working life, guarantee the sealing reliability of long-term work.
In order to reach above object, the basic technical scheme of pressure-balancing type sleeve expansion joint of the present invention is: comprise second adapter outside the first adapter of the 3rd adapter that to be connected outside butt end and butt end with rectangular cross-section hollow pipe ring, in the hollow pipe ring of described first adapter insertion second adapter; After the large footpath section containing hollow pipe ring is extended in described 3rd adapter, radial contraction axially extends path section again to contiguous second adapter; The endoporus of described path section have internal diameter and described second adapter external diameter move coordinate in stretch ring, outer end and the single port gland of described path section are connected; Described single port gland has the inner pressure ring inserting described path section endoporus and the second adapter cylindrical gap, stretches between ring and inner pressure ring and fill the second stuffing box packing in described; The endoporus of described hollow pipe ring and cylindrical have internal projecting ring and outer bulge loop respectively, and the internal diameter of described internal projecting ring coordinates with the first external diameter taken over is dynamic, and the external diameter of described outer bulge loop coordinates with the 3rd internal diameter taken over is dynamic; End and the twoport gland of described hollow pipe ring are connected, and described twoport gland has the inner inserting ring inserting hollow pipe ring endoporus and the first adapter cylindrical gap, and insert the outer slotting ring that hollow pipe ring cylindrical and the 3rd takes over interior interporal lacuna; First and the 3rd stuffing box packing is filled respectively between described internal projecting ring and inner inserting ring and between described outer bulge loop and outer slotting ring; Cavity between described rectangular hollow pipe ring and the 3rd adapter communicates in taking over second.
Due between inner inserting ring and internal projecting ring, two places stuffing box packing inside and outside arranged superposed on product length direction of outer slotting ring and evagination interannular, substantially reduce product length.The insertion depth of inner pressure ring, inner inserting ring, outer slotting ring can change, therefore the cavity volume volume-tunable of seal, thus can adjust as required according to the abrasion condition of stuffing box packing, guarantees sealing, greatly extends a working life.Further, as long as remove cover clamp, stuffing box packing can be taken out easily, greatly facilitate and safeguard replacing.
Further, described first stuffing box packing internal diameter square with square sum of the second stuffing box packing internal diameter equal the 3rd stuffing box packing external diameter square.
Further, the cross section of described first stuffing box packing is the inner wide and outer narrow right-angled trapezium of oblique angle towards the first adapter, the cross section of described second stuffing box packing is the inner wide and outer narrow right-angled trapezium of oblique angle towards the second adapter, and the cross section of described 3rd stuffing box packing is the wide outside and narrow inside right-angled trapezium of oblique angle towards the first adapter.
Further, described first adapter, the second adapter, the 3rd adapter and stuffing box packing contact surface are covered with the coating that surface roughness is less than Ra6.3 respectively.
Further, the fastening piece at described compression single port gland, twoport gland place is lined with disc spring pad.
Further, on the ring flat-plate of described twoport gland and described hollow pipe ring be respectively equipped with near twoport gland side the vent communicated with air.
Further, described first adapter is by the guide shell of liner and the second adapter grafting.
Further, be connected between the described 3rd Duan Yuyu radial contraction place, large footpath taken over gusset.
Further, the described 3rd large footpath section of taking over is provided with means of deflation and steam trap connection.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated.
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 as shown in Figure 1, basic structure is comprise outside butt end being inserted in the hollow pipe ring 2-2 of the second adapter by the guide shell 8 of liner by the i-steel component 7 adding backing plate 1-1 second adapter 2, first adapter 1 outside first adapter 1 of the 3rd adapter 4 and butt end with rectangular cross-section hollow pipe ring 2-2 that is connected.After the large footpath section 4-1 containing hollow pipe ring is extended in 3rd adapter 4, radial contraction to contiguous second adapter 2, more axially extends path section 4-3.Leg-of-mutton gusset 4-2 is supportted between large footpath section 4-1 and radial contraction place.The endoporus of this path section 4-3 have internal diameter and the second adapter 2 external diameter move coordinate in stretch ring 4-4, the outer end of path section 4-3 is connected with single port gland 5 by the fastening piece 9 on flange flange.Single port gland 5 has the pressure ring 5-1 inserting path section 4-3 endoporus and the second adapter 2 cylindrical gap, inside stretches between ring 4-4 and this pressure ring 5-1 and fills the second stuffing box packing 3-2.The internal diameter that the endoporus of hollow pipe ring 2-2 and cylindrical have internal projecting ring 2-3 and outer bulge loop 2-4, internal projecting ring 2-3 respectively coordinates with the external diameter of the first adapter 1 is dynamic, and the external diameter of outer bulge loop 2-4 coordinates with the internal diameter of the 3rd adapter 4 is dynamic.The end of hollow collar 2-2 is connected by fastening piece and twoport gland 6, this twoport gland 6 has the inner inserting ring 6-1 inserting hollow pipe ring 2-2 endoporus and the first adapter 1 cylindrical gap, and inserts the outer slotting ring 6-2 of interporal lacuna in hollow pipe ring 2-2 cylindrical and the 3rd adapter 4.The first stuffing box packing 3-1 and the 3rd stuffing box packing 3-3 is filled respectively between internal projecting ring 2-3 and inner inserting ring 6-1 and between outer bulge loop 2-4 and outer slotting ring 6-2.Cavity between rectangular hollow pipe ring 2-2 and the 3rd adapter 4 is communicated with in the second adapter 2 by vent H.
The structure that the intersegmental employing backing plate in large footpath is taken in above first adapter and the 3rd, i-steel component, fastening piece are connected can be passed to the first adapter the 3rd adapter right part annulus area blind flange force, balance the first adapter blind flange force, I-steel Placement can be weld also can be fastening piece connection.Illustrated example is that fastening piece connects, and the first adapter, by increasing backing plate, backing plate is opened bolt hole and is connected to reach fastening piece.3rd adapter not with medium contact not pressure-bearing, therefore can directly open bolt hole do not need increase backing plate.
In order to equilibrium product internal pressure thrust, after the cavity between rectangular hollow pipe ring 2-2 and the 3rd adapter 4 communicates with the second adapter 2 endoporus, pressure medium is introduced the second stuffing box packing 3-2 and the 3rd stuffing box packing 3-3 place.Theory analysis is known, the useful area that stuffing box packing effective diameter determines directly affects reasoning balance, first stuffing box packing internal diameter d1, the second stuffing box packing internal diameter d2, the 3rd stuffing box packing outside diameter d 3 are respectively its effective diameter, and this area of a circle directly determined is its useful area.The difference of the useful area making the second stuffing box packing 3-2 internal diameter Φ d2 stretching ring place in the useful area of the 3rd stuffing box packing 3-3 external diameter Φ d3 decision at the upper outside bulge loop place of rectangular hollow pipe ring 2-2 and the second adapter 2 determine during structural design, the useful area that the first stuffing box packing 3-1 internal diameter Φ d1 equaling internal projecting ring place on rectangular hollow pipe ring 2-2 determines, namely the first stuffing box packing internal diameter square with square sum of the second stuffing box packing internal diameter equal the 3rd stuffing box packing external diameter square, the first adapter 1 left end and the second adapter 2 right-hand member internal pressure thrust can be balanced.
First stuffing box packing can be identical with the effective diameter of the second stuffing box packing, also can be different, and its combination flexibly, overcomes the technology prejudice in the past generally believing " the first stuffing box packing identically must could balance internal pressure thrust with the second stuffing box packing effective diameter ".Therefore, diameter and second diameter taken over of the first adapter can be selected flexibly according to actual conditions, need not be identical, only needing the annular useful area adjusted between the upper outside bulge loop of rectangular cross-section hollow pipe ring and internal projecting ring to equal the second adapter cross-section area can balance internal pressure thrust.The present embodiment is specially adapted to the inconsistent occasion of product two ends pipe diameter, as the reducer of pipeline, near positions such as equipment oral areas.In addition, rectangular hollow pipe ring evagination ring diameter takes over large footpath section substantially internal diameter with the 3rd is suitable, comparing the 3rd traditional stuffing box packing effective diameter is rectangular hollow pipe ring outside diameter structure, this place's diameter dimension reduces the stuffing box packing thickness of more than 50%, and do not need integrated adpting flange, product diameter gabarit significantly reduces.
In addition, the present embodiment also has following structural feature:
1) the first adapter, the second adapter, the 3rd adapter and stuffing box packing contact surface are covered with the coating that surface roughness is less than Ra6.3 respectively.And; in using, there is slide displacement, the exposed surface of coating is respectively equipped with protective tube 5-3,6-3 and 6-4 of axially extending from single port gland and twoport gland, protective tube 5-3,6-3 and 6-4 and coating Spielpassung; therefore protect coating surface, make it without dirt and be not corroded.Coating can select zinc, chromium, teflon etc. according to working medium.
2) fastening piece 9 of compression single port gland, twoport gland is lined with disc spring pad, thus automatically can supplement pretightening force after the appearance of fastening piece pretightening force is lax.The cross section of the first stuffing box packing 3-1 is the inner wide and outer narrow right-angled trapezium of oblique angle towards the first adapter, the cross section of the 3rd stuffing box packing 3-3 is the wide outside and narrow inside right-angled trapezium of oblique angle towards the first adapter, the cross section of the second stuffing box packing 3-2 is the inner wide and outer narrow right-angled trapezium of oblique angle towards the second adapter, its oblique angle coincide with the inclined-plane of inner pressure ring 5-1, inner inserting ring 6-1, outer slotting ring 6-2 corresponding position respectively, therefore can ensure that gland place applies less axial force and can produce the impacting force larger to filler.
3) on the ring flat-plate of twoport gland 6 and the rectangular hollow pipe ring 2-2 of the second adapter 2 near twoport gland 6 side, be respectively equipped with the vent H communicated with air, under affecting to prevent medium temperature, air pressure variations in rectangular hollow pipe ring 2-2 and Security is had a negative impact.The large footpath section of the 3rd adapter is provided with means of deflation and steam trap connection, so that field pipes venting or hydrophobic use.
Facts have proved, the present embodiment first adapter 1 is fixed into entirety by i-steel component 7 and the 3rd adapter 4, second adapter 2 with rectangular cross-section hollow pipe ring 2-2 is included in this entirety, first adapter 1 and the second adapter 2 are respectively as the two ends of product, can axially be free to slide each other, pressure medium place of arrival, has the stuffing box packing of three places to carry out pressure-bearing stop.Between the protective tube that twoport gland axially extends and fixing mechanism and first take over and second take between there is the axial compression gap L c of equivalent length.Between the rectangular hollow pipe ring of the second adapter and the 3rd ring flat-plate taken over, there is axial tension gap L e.Axial compression gap L c can prevent product generation excess in displacement, causes sealability to decline; Drawing gap Le can ensure that product can not be damaged by infinitely stretching when fixed support loses efficacy.Therefore, product, while pressure bearing and seal, can also axially be free to slide, and can the internal pressure thrust of equalizing main.The spacing Lc of axial compression and the spacing Le that stretches limits the range of movement of the second adapter 2, guarantees product safety further.The cavity volume volume of stuffing box packing is trapezium structure, and fastening piece 9 groups includes disc spring pad, guarantees sealing further, greatly extends a working life, and, as long as remove gland, stuffing box packing can be taken out easily, greatly facilitate and safeguard replacing.
Embodiment two
Basic structure and the embodiment one of the present embodiment are similar, can regard a kind of special construction of embodiment as.Its difference is that the first adapter 1 is identical with the second adapter 2 diameter, the first stuffing box packing 3-1 is identical with the effective diameter of the second stuffing box packing 3-2, for the continuous segment that pipe diameter is identical, has the various Advantageous Effects of embodiment one equally.
Facts have proved, above embodiment not only meets the sealing that conventional pressure Balance-type Sleeve Compensator has, the displacement that slides axially, balance internal pressure thrust performance, have more seal diameter dimension combination flexible, first adapter and the combination of the second tube diameter are flexibly, product length and overall sizes compact, seal cavity volume volume can adjust, sealing material is unrestricted, mounting or dismounting are convenient, manufacturing process both can be forged, also can to weld etc. superior function, thus greatly extend a working life of product, guarantee the sealing reliability of long-term work.
In addition to the implementation, the present invention can also have other mode of execution, as: the second tube diameter is less than internal projecting ring in rectangular hollow pipe ring, and then makes the second tube diameter be less than the structure of the first tube diameter; When product diameter is less or the second tube diameter is less, outer bulge loop and internal projecting ring diameter difference less time, rectangular hollow pipe ring can adopt solid construction; I-steel component can be other load-carrying member, and the method for welding also can be adopted to be connected the first adapter and the 3rd adapter large footpath section etc. structure.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of application claims.
Claims (9)
1. a pressure-balancing type sleeve expansion joint, it is characterized in that: comprise second adapter (2) outside the first adapter (1) of the 3rd adapter (4) that to be connected outside butt end and butt end with rectangular cross-section hollow pipe ring (2-2), in the hollow pipe ring of described first adapter insertion second adapter; After large footpath section (4-1) of containing hollow pipe ring is extended in described 3rd adapter, radial contraction axially extends path section (4-3) again to contiguous second adapter; The endoporus of described path section have internal diameter and described second adapter external diameter move coordinate in stretch ring (4-4), outer end and the single port gland (5) of described path section are connected; Described single port gland has the pressure ring inserting described path section endoporus and the second adapter cylindrical gap, stretches between ring and pressure ring and fill the second stuffing box packing in described; The endoporus of described hollow pipe ring and cylindrical have internal projecting ring (2-3) and outer bulge loop (2-4) respectively, and the internal diameter of described internal projecting ring coordinates with the first external diameter taken over is dynamic, and the external diameter of described outer bulge loop coordinates with the 3rd internal diameter taken over is dynamic; End and the twoport gland (6) of described hollow collar are connected, described twoport gland has the inner inserting ring (6-1) inserting hollow collar endoporus and the first adapter cylindrical gap, and inserts the outer slotting ring (6-2) that hollow collar cylindrical and the 3rd takes over interior interporal lacuna; Fill first and the 3rd stuffing box packing between described internal projecting ring and inner inserting ring and between described outer bulge loop and outer slotting ring respectively, the cavity between described rectangular hollow pipe ring and the 3rd adapter communicates in taking over second.
2. pressure-balancing type sleeve expansion joint according to claim 1, is characterized in that: described first stuffing box packing internal diameter square with square sum of the second stuffing box packing internal diameter equal the 3rd stuffing box packing external diameter square.
3. pressure-balancing type sleeve expansion joint according to claim 2, it is characterized in that: the cross section of described first stuffing box packing is the inner wide and outer narrow right-angled trapezium of oblique angle towards the first adapter, the cross section of described second stuffing box packing is the inner wide and outer narrow right-angled trapezium of oblique angle towards the second adapter, and the cross section of described 3rd stuffing box packing is the wide outside and narrow inside right-angled trapezium of oblique angle towards the first adapter.
4. pressure-balancing type sleeve expansion joint according to claim 3, is characterized in that: described first adapter, the second adapter, the 3rd adapter and stuffing box packing contact surface 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, is characterized in that: the fastening piece at described compression single port gland, twoport gland place is lined with disc spring pad.
6. pressure-balancing type sleeve expansion joint according to claim 5, is characterized in that: on the ring flat-plate of described twoport gland and described hollow pipe ring be respectively equipped with near twoport gland side the vent communicated with air.
7. pressure-balancing type sleeve expansion joint according to claim 8, is characterized in that: described first adapter is by the guide shell of liner and the second adapter grafting.
8. pressure-balancing type sleeve expansion joint according to claim 7, is characterized in that: be connected between the Duan Yuyu radial contraction place, large footpath of described 3rd adapter gusset.
9. pressure-balancing type sleeve expansion joint according to claim 8, is characterized in that: the large footpath section of described 3rd adapter is 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 true CN105465530A (en) | 2016-04-06 |
| CN105465530B CN105465530B (en) | 2017-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610032593.9A Active CN105465530B (en) | 2016-01-18 | 2016-01-18 | Pressure-balancing type sleeve expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105465530B (en) |
Cited By (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 |
| CN110259946A (en) * | 2019-05-30 | 2019-09-20 | 北京高能时代环境技术股份有限公司 | A kind of main shaft sealing construction |
Citations (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 |
| CN101900235A (en) * | 2010-07-29 | 2010-12-01 | 江苏贝特管件有限公司 | Zero-thrust sleeve type compensator |
| 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 |
| KR101280826B1 (en) * | 2010-12-15 | 2013-07-02 | 박성희 | coupler for double pipe |
| 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
Patent Citations (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 |
| CN101900235A (en) * | 2010-07-29 | 2010-12-01 | 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 |
Cited By (3)
| 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 |
| CN110259946A (en) * | 2019-05-30 | 2019-09-20 | 北京高能时代环境技术股份有限公司 | A kind of main shaft sealing construction |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105465530B (en) | 2017-11-03 |
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