CN114526162A - Air inlet channel sealing device - Google Patents
Air inlet channel sealing device Download PDFInfo
- Publication number
- CN114526162A CN114526162A CN202210052489.1A CN202210052489A CN114526162A CN 114526162 A CN114526162 A CN 114526162A CN 202210052489 A CN202210052489 A CN 202210052489A CN 114526162 A CN114526162 A CN 114526162A
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- Prior art keywords
- ring
- flange
- adapter
- sealing
- lantern ring
- 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
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- 238000007789 sealing Methods 0.000 title claims abstract description 79
- 238000009434 installation Methods 0.000 claims description 9
- 230000007423 decrease Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 210000001015 abdomen Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/28—Arrangement of seals
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The application provides an intake duct sealing device, belong to the technical field of aircraft structure, specifically include the adapter ring, the lantern ring and a plurality of butt piece, a terminal surface of adapter ring is equipped with first flange, be equipped with first sealing washer on the terminal surface of the lantern ring, the lantern ring is located on the adapter ring with the direction cover that the terminal surface that sets up first sealing washer is back to first flange, still be equipped with outstanding locating part on the lateral wall of adapter ring, the locating part sets up between the lantern ring and first flange, during lantern ring butt locating part, the terminal surface of adapter ring is not outstanding to first sealing washer, a plurality of butt pieces encircle in the adapter ring periphery, a plurality of butt pieces insert between locating part and the lantern ring, make the lantern ring remove to the terminal surface of the outstanding adapter ring of first sealing washer to one side of keeping away from first flange. Through the processing scheme of the application, the problem of sealing of the air inlet channel installed in the engine side-entering mode in the prior art is solved.
Description
Technical Field
The application relates to the field of aircraft structures, in particular to an air inlet sealing device.
Background
With the requirement of advanced combat functions of modern military aircraft, the air inlet and exhaust systems of aircraft engines meeting stealth requirements begin to emerge in large numbers on advanced stealth aircraft, and the typical design is that the air inlet channel and the tail nozzle of a B-2 stealth strategy bomber are both in an S-turn shape with a low radar scattering cross section, and the engines are buried in the aircraft body, so that the engines cannot be installed in a push-in (drilling) mode entering from the tail, and only can be installed in a side-in mode entering from the belly or the back opening frame of the aircraft. In order to avoid interference and clamping stagnation between the engine and the air inlet channel in the side-in installation process, a gap is reserved between the engine air inlet flange and the air inlet channel butt flange, so that the sealing between the engine air inlet flange and the air inlet channel butt flange can be only carried out after the engine is installed in place. Because the space in the engine compartment is narrow, the sealing mode that adopts traditional sealing washer clearance of impressing does not have maneuverability, and the sealing washer is difficult to fix, has the risk of being inhaled the intake duct. Based on the above many limiting conditions, the conventional air inlet sealing device cannot meet the above specific requirements, and a corresponding technology needs to be adopted to solve the problem of reliable sealing of the air inlet when the engine is installed in a side-entry manner.
Disclosure of Invention
In view of this, the present application provides an intake duct sealing device, which solves the problem of the side-entry type intake duct sealing of the engine in the prior art.
The application provides an intake duct sealing device adopts following technical scheme:
the utility model provides an intake duct sealing device, includes adapter ring, the lantern ring and a plurality of butt piece, a terminal surface of adapter ring is equipped with first flange, be equipped with first sealing washer on the terminal surface of the lantern ring, the lantern ring is with setting up the terminal surface of first sealing washer is located back to the direction cover of first flange on the adapter ring, still be equipped with outstanding locating part on the lateral wall of adapter ring, the locating part set up in between the lantern ring and the first flange, the lantern ring butt during the locating part, first sealing washer is not outstanding the terminal surface of adapter ring is a plurality of the butt piece encircle in the adapter ring periphery is a plurality of the butt piece inserts between locating part and the lantern ring, makes the cover hoop is kept away from one side of first flange removes extremely first sealing washer is outstanding the terminal surface of adapter ring.
Optionally, the abutting part is an arc-shaped wedge ring, the thickness of the wedge-shaped wedge ring is gradually reduced from outside to inside, and one side of the arc-shaped wedge ring abutting against the limiting part is attached to the limiting part.
Optionally, the number of the arc-shaped wedge rings is two, and the inner diameter of each arc-shaped wedge ring is consistent and the circumference of each arc-shaped wedge ring is a half circle.
Optionally, a side surface of the collar facing the first flange is provided with an inclined surface matched and attached with the arc wedge ring.
Optionally, after the abutting part is inserted between the collar and the limiting part, the abutting part and the limiting part are fixedly connected through a locking screw.
Optionally, the limiting member is a second flange fixed to the outer periphery of the adapter ring, and the locking screw penetrates through the second flange to fix the abutting member.
Optionally, an annular groove is formed in an end face, away from the first flange, of the lantern ring, and the first sealing ring is fixed in the annular groove and protrudes out of the annular groove.
Optionally, the first sealing ring is made of a sponge rubber plate.
Optionally, an annular groove is formed in the inner wall of the sleeve ring, a second sealing ring is arranged in the annular groove, the sleeve ring is sleeved on the adapter, and the second sealing ring is in sealing fit with the inner wall of the adapter ring.
Optionally, the first flange is used for being fixedly connected with an air inlet flange of an engine through a bolt, and a gap exists between the end face of the adapter ring far away from the first flange and the 1 surface of the air inlet flange after installation.
To sum up, the application comprises the following beneficial technical effects:
1. after the first flange of the adapter ring is connected with the engine air inlet flange, a gap exists between the first sealing ring and the flange surface of the air inlet channel, the first sealing ring is in an uncompressed state, and in the process of installation of the engine side, the gap is reserved between the air inlet channel and the sealing device, so that the engine can be conveniently installed and adjusted in posture. After the engine is installed in place, a plurality of butt parts are inserted and fixed between the limiting part and the lantern ring in a distribution mode surrounding the adapter ring, the insertion of the butt parts pushes the lantern ring to move towards one side far away from the first flange, namely, the lantern ring moves towards one side of the air inlet flange, the first sealing ring is extruded onto the surface of the air inlet flange, the end face sealing between the sealing device and the air inlet is completed, the technical problem of air inlet sealing of engine side-in installation can be solved, the structure is simple and reliable, the disassembly and assembly of an engine cabin with a narrow space are facilitated, and the air inlet sealing device can be widely applied to air inlet sealing of aircraft engine side-in installation;
2. the utility model provides a first sealing washer bonds in lantern ring recess, keeps the certain distance with the intake duct internal surface, and the preceding section of stretching out of adapter ring also separates first sealing washer and intake duct inner flow way, and bulge gets into the intake duct inner conduit when can preventing first sealing washer pressurized to guarantee that the relative smooth of inner flow way wall at intake duct and engine butt joint position does not have the arch, be favorable to reducing the flow loss that admits air.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is an exploded view of the energy containment device, air intake duct, and engine air intake of the present application;
FIG. 2 is a cross-sectional view of the present application taken perpendicular to the first flange face;
FIG. 3 is an enlarged view of portion A of FIG. 1;
fig. 4 is an enlarged schematic view of a portion B in fig. 1.
Description of reference numerals: 1. an inlet flange; 2. a first seal ring; 21. an annular groove; 3. a second seal ring; 31. an annular groove; 4. a collar; 5. an arc wedge ring; 6. a transfer ring; 61. a first flange; 62. a limiting member; 7. an engine air intake flange; 8. a bolt; 9. a locking screw; 91. and (4) blind threaded holes.
Detailed Description
The embodiments of the present application will be described in detail below with reference to the accompanying drawings.
The following description of the embodiments of the present application is provided by way of specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The application is capable of other and different embodiments and its several details are capable of modifications and various changes in detail without departing from the spirit of the application. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present application, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present application, and the drawings only show the components related to the present application rather than the number, shape and size of the components in actual implementation, and the type, amount and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.
In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.
The embodiment of the application provides an air inlet sealing device. The sealing device is arranged between an air inlet flange and an air inlet flange of an engine.
As shown in fig. 1, 2 and 3, an inlet sealing device comprises an adapter ring 6, a collar 4 and a plurality of abutments. A terminal surface of adapter ring 6 is equipped with first flange 61, first flange 61 is used for passing through bolt 8 fixed connection with engine air inlet flange 7, after the installation adapter ring 6 is kept away from there is the clearance in the terminal surface of first flange 61 and the 1 face of intake duct flange to adapter ring 6 produces the interference with the intake duct when avoiding aircraft engine to produce axial displacement because of the thermal energy.
Be equipped with first sealing washer 2 on the terminal surface of the lantern ring 4, the lantern ring 4 is with being provided with the terminal surface of first sealing washer 2 is back to the mode cover of first flange 61 is located on the adapter ring 6, still be equipped with outstanding locating part 62 on the lateral wall of adapter ring 6, locating part 62 set up in between lantern ring 4 and first flange 61, lantern ring 4 butt during locating part 62, first sealing washer 2 is not outstanding the terminal surface of adapter ring 6, it is a plurality of the butt encircles in the periphery of adapter ring 6, it is a plurality of the butt inserts between locating part 62 and the lantern ring 4, make the lantern ring 4 to keeping away from one side of first flange 61 removes extremely first sealing washer 2 is outstanding the terminal surface of adapter ring 6.
Sleeving the lantern ring 4 on the adapter ring 6, wherein one end, back to the first sealing ring 2, of the lantern ring 4 is abutted to the limiting part 62, and at the moment, the first sealing ring 2 does not protrude out of the end face of the adapter ring 6; after the first flange 61 of the adapter ring 6 is connected with the engine air inlet flange 7, a gap exists between the first sealing ring 2 and the surface of the air inlet channel flange 1, the first sealing ring 2 is in an uncompressed state, and in the process of installation in the engine side, a gap is reserved between the air inlet channel and the sealing device, so that the engine can be conveniently adjusted in installation posture. Treat the engine installation back that targets in place, with a plurality of butt pieces in order to encircle the distribution mode of adapter ring 6 inserts and fixes between locating part 62 and the lantern ring 4, the insertion of butt piece promotes lantern ring 4 is to the one side removal of keeping away from first flange 61, promptly, makes lantern ring 4 remove to intake duct flange 1 one side, extrudees intake duct flange 1 face with first sealing washer 2 on, accomplishes the end face seal between sealing device and the intake duct.
The cross section of the abutting part in the direction perpendicular to the first flange 61 surface can be one of a rectangle, a trapezoid and a triangle, or can be other irregular shapes, and the abutting part can be abutted to the lantern ring 4 and is far away from the first flange 61, when the cross section is rectangular, the abutting part is inserted between the lantern ring 4 and the limiting part 62 through large external force, interference fit is formed among the abutting part, the lantern ring 4 and the limiting part 62, the first sealing ring 2 is extruded on the air inlet flange 1, and a chamfer or a fillet can also be arranged on one side, facing the adapter ring 6, of the rectangular abutting part. When the abutting part is trapezoidal or triangular, the abutting part can be conveniently inserted between the lantern ring 4 and the limiting part 62 from the side with a smaller cross section (the side with a thinner thickness), and the abutting part is inserted to form interference fit with the lantern ring 4 and the limiting part 62, so that the first sealing ring 2 is extruded on the air inlet flange 1.
After the abutting piece is inserted between the lantern ring 4 and the limiting piece 62, the abutting piece and the limiting piece 62 are fixedly connected through a locking screw 9. In other embodiments, the modes of fixing the abutting part and limiting the position can be various, such as riveting, welding and the like, and the functions of fixing the abutting part and limiting the position can be achieved, so that the abutting part can be prevented from slipping.
As shown in fig. 3 and 4, the limiting member 62 is a second flange fixed to the outer periphery of the adapter ring 6, the locking screw 9 passes through the second flange to fix the abutment member, and a blind threaded hole 91 in threaded connection with the locking screw 9 is provided in the abutment member. In the embodiment of the present application, the second flange is integrally provided with the adapter ring 6.
The abutting part is an arc-shaped wedge ring 5, the thickness of the arc-shaped wedge ring 5 is gradually reduced from outside to inside, and one side of the arc-shaped wedge ring 5 abutting against the limiting part 62 is attached to the limiting part 62. It is understood that the cross section of the arc-shaped wedge ring 5 is a right trapezoid, a right triangle, or other shapes deformed on the right trapezoid and the right triangle, such as deforming the hypotenuse of the right trapezoid and the right triangle into a curve; when being right trapezoid, the middle right-angle side is laminated with locating part 62, and adjacent right-angle side is as the outside limit and the inboard side of arc wedge ring 5, hypotenuse butt lantern ring 4. The number of the arc-shaped wedge rings 5 is two, each arc-shaped wedge ring 5 is identical in inner diameter and half circle in circumference, the inner diameters of the two arc-shaped wedge rings 5 are identical in outer diameter of the adapter ring 6, the two arc-shaped wedge rings 5 form a continuous and complete circular ring and surround the adapter ring 6, and the threaded blind holes 91 can be formed in the head end and the tail end of the two arc-shaped wedge rings 5. In other embodiments, the number of the arc-shaped wedge rings 5 may be three or more, and a plurality of arc-shaped wedge rings 5 may not necessarily form a complete continuous circular ring.
The side surface of the collar 4 facing the first flange 61 is provided with an inclined surface matched and attached with the arc wedge ring 5. After the arc-shaped wedge ring 5 is inserted, the inclined surface of the arc-shaped wedge ring 5 is matched and attached with the end surface of the lantern ring 4, so that the gap between the lantern ring 4 and the limiting part 62 is reduced, and the stability of the connecting structure among the arc-shaped wedge ring 5, the lantern ring 4 and the limiting part 62 is improved.
The first sealing ring 2 can be directly bonded to the end face of the collar 4, or can be fixed in other ways.
In the embodiment of the present application, the fixing manner of the first sealing ring 2 is that the end surface of the collar 4, which is far away from the first flange 61, is provided with an annular groove 21, and the first sealing ring 2 is fixed in the annular groove 21 and protrudes out of the annular groove 21. The first seal ring 2 is bonded in the annular groove 21. The first sealing ring 2 is partially embedded in the annular groove 21, which improves the stability of the connection of the first sealing ring 2 and the collar 4. Meanwhile, the first sealing ring 2 keeps a certain distance from the inner surface of the air inlet, and the forward extending section (the part for sleeving the lantern ring 4) of the adapter ring 6 also separates the first sealing ring 2 from an inner flow channel of the air inlet, so that the protruding part can be prevented from entering the inner flow channel of the air inlet when the first sealing ring 2 is pressed, the wall surface of the inner flow channel at the butt joint part of the air inlet and an engine is relatively smooth and has no protrusion, and the reduction of air inlet flowing loss is facilitated.
The first sealing ring 2 is made of a sponge rubber plate, the sponge rubber plate has large compression amount, can be used as an end face sealing material between the lantern ring 4 and the air inlet channel flange 1, and is used for compensating displacement generated by forward force transfer and thermal expansion of an engine along the axial direction.
Be equipped with annular groove 31 on the inner wall of the lantern ring 4, be equipped with second sealing washer 3 in the annular groove 31, lantern ring 4 cover is located the switching is last, second sealing washer 3 with the sealed laminating of the inner wall of switching ring 6 realizes the radial seal between lantern ring 4 and the switching ring 6.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides an intake duct sealing device, its characterized in that, includes adapter ring, the lantern ring and a plurality of butt piece, a terminal surface of adapter ring is equipped with first flange, be equipped with first sealing washer on the terminal surface of the lantern ring, the lantern ring is with setting up the terminal surface of first sealing washer is back to the direction cover of first flange is located on the adapter ring, still be equipped with outstanding locating part on the lateral wall of adapter ring, the locating part set up in between the lantern ring and the first flange, lantern ring butt during the locating part, first sealing washer is not outstanding the terminal surface of adapter ring is a plurality of the butt piece encircle in the adapter ring periphery is a plurality of the butt piece inserts between the locating part and the lantern ring, make the lantern ring is to keeping away from one side of first flange removes extremely first sealing washer is outstanding the terminal surface of adapter ring.
2. The duct sealing device of claim 1, wherein the abutment member is an arc-shaped wedge ring, the thickness of the wedge-shaped wedge ring gradually decreases from the outside to the inside, and one side of the arc-shaped wedge ring abutting against the limiting member is attached to the limiting member.
3. The inlet seal of claim 2, wherein the number of said arcuate wedge rings is two, each of said arcuate wedge rings having a uniform inner diameter and a half-circle circumference.
4. The inlet seal of claim 2, wherein the side of the collar facing the first flange is provided with a bevel that mates with the arcuate wedge ring.
5. The duct sealing device according to claim 1, wherein the abutment member is fixedly connected to the retainer by a locking screw after the abutment member is inserted between the collar and the retainer.
6. The inlet seal of claim 5, wherein the retainer is a second flange fixed to the outer periphery of the adapter ring, and the locking screw passes through the second flange to fix the abutment member.
7. The inlet seal of claim 1, wherein an annular groove is provided on an end surface of the collar remote from the first flange, and the first seal ring is fixed in the annular groove and protrudes out of the annular groove.
8. The inlet seal of claim 7, wherein the first seal ring is made of a sponge rubber plate.
9. The air inlet channel sealing device according to claim 1, wherein an annular groove is formed in the inner wall of the sleeve ring, a second sealing ring is arranged in the annular groove, the sleeve ring is sleeved on the adapter, and the second sealing ring is in sealing fit with the inner wall of the adapter ring.
10. The inlet duct sealing device according to claim 1, wherein the first flange is used for being fixedly connected with an engine inlet flange through bolts, and a gap exists between an end face of the adapter ring, which is far away from the first flange, and a 1-face of the inlet duct flange after installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210052489.1A CN114526162A (en) | 2022-01-18 | 2022-01-18 | Air inlet channel sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210052489.1A CN114526162A (en) | 2022-01-18 | 2022-01-18 | Air inlet channel sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114526162A true CN114526162A (en) | 2022-05-24 |
Family
ID=81620887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210052489.1A Pending CN114526162A (en) | 2022-01-18 | 2022-01-18 | Air inlet channel sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114526162A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2476939A2 (en) * | 2011-01-12 | 2012-07-18 | Beulco GmbH & Co. KG | Connector for connecting a tube end |
| CN205424190U (en) * | 2015-12-15 | 2016-08-03 | 大连凯斯博格设备制造有限公司 | Flange formula pipe fitting seal for pipe joints device |
| CN106885076A (en) * | 2015-12-15 | 2017-06-23 | 大连凯斯博格设备制造有限公司 | A kind of flange pipeline attachment means |
| CN110778721A (en) * | 2019-11-25 | 2020-02-11 | 中国科学院工程热物理研究所 | Combined sealing ring |
| CN110869659A (en) * | 2017-07-11 | 2020-03-06 | 卢泰克管理和投资有限公司 | Pipe, in particular plastic pipe for waste water lines |
-
2022
- 2022-01-18 CN CN202210052489.1A patent/CN114526162A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2476939A2 (en) * | 2011-01-12 | 2012-07-18 | Beulco GmbH & Co. KG | Connector for connecting a tube end |
| CN205424190U (en) * | 2015-12-15 | 2016-08-03 | 大连凯斯博格设备制造有限公司 | Flange formula pipe fitting seal for pipe joints device |
| CN106885076A (en) * | 2015-12-15 | 2017-06-23 | 大连凯斯博格设备制造有限公司 | A kind of flange pipeline attachment means |
| CN110869659A (en) * | 2017-07-11 | 2020-03-06 | 卢泰克管理和投资有限公司 | Pipe, in particular plastic pipe for waste water lines |
| CN110778721A (en) * | 2019-11-25 | 2020-02-11 | 中国科学院工程热物理研究所 | Combined sealing ring |
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