CN109370663B - Annular space separation sealing structure capable of absorbing axial and radial expansion - Google Patents
Annular space separation sealing structure capable of absorbing axial and radial expansion Download PDFInfo
- Publication number
- CN109370663B CN109370663B CN201811382997.6A CN201811382997A CN109370663B CN 109370663 B CN109370663 B CN 109370663B CN 201811382997 A CN201811382997 A CN 201811382997A CN 109370663 B CN109370663 B CN 109370663B
- Authority
- CN
- China
- Prior art keywords
- annular
- plate
- pin shaft
- radial expansion
- cylindrical
- 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.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 53
- 238000000926 separation method Methods 0.000 claims abstract description 14
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 101001017827 Mus musculus Leucine-rich repeat flightless-interacting protein 1 Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Gasket Seals (AREA)
Abstract
The application discloses an annular space separation sealing structure capable of absorbing axial and radial expansion, which comprises an annular folded plate, a cylindrical vertical plate, a limiting pin shaft, an elastic sealing piece, a first annular plate and a second annular plate; the annular folded plate is fixedly sleeved on the outer wall of the inner cylinder; the annular flap includes a horizontal member and a vertical member; the lower part of the vertical component and the upper part of the cylindrical riser are respectively connected with the elastic sealing piece; a plurality of pin grooves are formed in the cylindrical vertical plate; the limiting pin shaft is fixedly arranged on the vertical component; the limiting pin shaft penetrates through the pin groove. According to the embodiment of the application, the limiting pin shaft can slide in the pin groove and can absorb the axial expansion difference between the inner cylinder and the outer cylinder, the elastic sealing piece can absorb the radial expansion difference between the inner cylinder and the outer cylinder, and finally the sealing structure can achieve the purposes of sealing separation and absorbing the axial expansion difference and the radial expansion difference between the inner cylinder and the outer cylinder.
Description
Technical Field
The present application relates to the field of seal structures, and in particular, to an annular space division seal structure that absorbs axial and radial expansion.
Background
In coal gasifiers, the synthesis gas space is generally composed of a cylindrical structure, and an outer cylinder for safety protection is provided outside the synthesis gas space, and an annular space is formed between the outer cylinder and the inner cylinder. In order to achieve a gas separation between the different locations of the annular space, it is often necessary to provide a sealing diaphragm in the annular space, which may have a pressure difference across it. Due to the temperature difference, a large thermal expansion difference exists between the outer cylinder and the inner cylinder. The sealing partition plate is required to bear the pressure difference at two sides of the separation space and also bear the thermal expansion difference between the outer cylinder and the inner cylinder.
In the existing gasifier structure, an annular sealing plate with a Z-shaped bend is generally adopted to be directly connected to an inner cylinder and an outer cylinder, and the structure can only absorb small expansion difference and cannot adapt to a structure with large expansion difference due to the fact that the flexibility of a steel plate is poor. In addition, the expansion joint structure is adopted to absorb the axial expansion difference between the inner cylinder and the outer cylinder, but the expansion joint structure has the defects of low service life, high manufacturing cost and the like.
Disclosure of Invention
The utility model provides an annular space separation seal structure that can absorb axial and radial expansion to solve among the prior art seal structure absorb expansion capacity poor, insecure, the life-span is low and manufacturing cost is high problem.
The embodiment of the application provides an annular space separation sealing structure capable of absorbing axial and radial expansion, which comprises an annular folded plate, a cylindrical vertical plate, a limiting pin shaft, an elastic sealing piece, a first annular plate and a second annular plate;
the annular folded plate is fixedly sleeved on the outer wall of the inner cylinder; the annular folded plate comprises a horizontal component and a vertical component, and the horizontal component is vertically and fixedly connected with the vertical component;
the lower part of the vertical component and the upper part of the cylindrical riser are respectively connected with the elastic sealing piece; a plurality of pin grooves are formed in the cylindrical vertical plate; the limiting pin shaft is fixedly arranged on the vertical component; the limiting pin shaft penetrates through the pin groove;
the lower end of the cylindrical vertical plate is connected with the upper end of the first annular plate;
the first annular plate is connected with the second annular plate, and the second annular plate is fixedly sleeved on the inner wall of the outer cylinder.
Further, the limit pin shaft is arranged at the upper part of the slotted hole of the pin groove.
Further, the sealing structure further comprises a clamping groove, and the lower part of the vertical component and the upper part of the cylindrical vertical plate are respectively connected with the elastic sealing piece through the clamping groove; the height of the clamping groove along the radial direction of the annular folded plate is smaller than the height of the elastic sealing piece along the radial direction of the annular folded plate.
Further, the first annular plate and the second annular plate are of an integrally formed structure.
Further, the sealing structure further comprises a supporting annular rib plate, and the second annular plate is connected with the inner wall of the outer cylinder through the supporting annular rib plate.
According to the technical scheme, the annular space separation sealing structure capable of absorbing axial and radial expansion comprises an annular folded plate, a cylindrical vertical plate, a limiting pin shaft, an elastic sealing piece, a first annular plate and a second annular plate; the annular folded plate is fixedly sleeved on the outer wall of the inner cylinder; the annular folded plate comprises a horizontal component and a vertical component, and the horizontal component is vertically and fixedly connected with the vertical component; the lower part of the vertical component and the upper part of the cylindrical riser are respectively connected with the elastic sealing piece; a plurality of pin grooves are formed in the cylindrical vertical plate; the limiting pin shaft is fixedly arranged on the vertical component; the limiting pin shaft penetrates through the pin groove; the lower end of the cylindrical vertical plate is connected with the upper end of the first annular plate; the first annular plate is connected with the second annular plate, and the second annular plate is fixedly sleeved on the inner wall of the outer cylinder. According to the embodiment of the application, the limiting pin shaft can slide in the pin groove and can absorb the axial expansion difference between the inner cylinder and the outer cylinder, the elastic sealing piece can absorb the radial expansion difference between the inner cylinder and the outer cylinder, and finally the sealing structure can achieve the purposes of sealing separation and absorbing the axial expansion difference and the radial expansion difference between the inner cylinder and the outer cylinder.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed 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 that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of the use of an annular space-dividing seal structure that absorbs axial and radial expansion provided herein;
FIG. 2 is an enlarged schematic view of section A provided herein;
FIG. 3 is a schematic view of the structure of the inner barrel provided in the present application as it expands downwardly;
FIG. 4 is a schematic view of the structure of the inner barrel provided in the present application when it expands outwardly.
Illustration of: the annular rib plate comprises a 1-annular folded plate, a 11-horizontal part, a 12-vertical part, a 2-cylindrical vertical plate, 21-pin grooves, 3-limiting pins, 4-elastic sealing parts, 5-first annular plates, 6-second annular plates, 7-inner cylinders, 8-outer cylinders, 9-clamping grooves and 10-supporting annular rib plates.
Detailed Description
In coal gasifiers, the synthesis gas space is generally composed of a cylindrical structure, and a safety protection outer tube 8 is provided outside the synthesis gas space, and an annular space is formed between the outer tube 8 and the inner tube 7. In order to achieve a gas separation between different locations in the annular space, it is often necessary to provide a sealing structure in the annular space, which may have a pressure difference across it. In addition, there is a large difference in thermal expansion between the outer tube 8 and the inner tube 7 due to the temperature difference.
Referring to fig. 1-2, embodiments of the present application provide an annular space-dividing seal that absorbs axial and radial expansion.
The sealing structure comprises an annular folded plate 1, a cylindrical vertical plate 2, a limiting pin shaft 3, an elastic sealing piece 4, a first annular plate 5 and a second annular plate 6;
the annular folded plate 1 is fixedly sleeved on the outer wall of the inner cylinder 7; the annular folded plate 1 comprises a horizontal component 11 and a vertical component 12, and the horizontal component 11 is vertically and fixedly connected with the vertical component 12;
specifically, the inner wall of the horizontal component 11 is connected with the outer wall of the inner cylinder 7, and one end of the horizontal component 11 away from the inner cylinder 7 is vertically connected with the upper end of the vertical component 12. The annular folded plate 1 is connected with the inner wall of the inner cylinder 7 in a welding mode.
The lower part of the vertical member 12 and the upper part of the cylindrical riser 2 are connected to the elastic seal 4, respectively; a plurality of pin grooves 21 are formed in the cylindrical vertical plate 2; the limiting pin shaft 3 is fixedly arranged on the vertical component 12; the limiting pin shaft 3 penetrates through the pin groove 21;
specifically, the limiting pins 3 are welded on the vertical component 12, and the number of the limiting pins 3 is consistent with the number of the pin grooves 21. Eight or sixteen pin grooves 21 are uniformly arranged on the cylindrical vertical plate 2 along the circumferential direction, and the lengths of the pin grooves 21 are set according to the axial expansion difference of the inner cylinder 7 and the outer cylinder 8.
As shown in fig. 3, when the inner cylinder 7 expands downwards, the limiting pin shaft 3 slides downwards along the pin groove on the cylindrical vertical plate 2, and the elastic sealing element 4 absorbs expansion displacement.
As shown in fig. 4, when the inner tube 7 expands outwardly, the gap between the annular flap 1 and the cylindrical riser 2 is reduced, and the elastic seal 4 can absorb the expansion displacement. The material of the elastic sealing member 4 may be an elastic sealing material.
The lower end of the cylindrical vertical plate 2 is connected with the upper end of the first annular plate 5;
specifically, the cylindrical riser 2 is welded to the first annular plate 5.
The first annular plate 5 is connected with the second annular plate 6, and the second annular plate 6 is fixedly sleeved on the inner wall of the outer cylinder 8.
Specifically, the first annular plate 5 and the second annular plate 6 are welded and spliced. The second annular plate 6 is welded to the outer cylinder 8.
In the embodiment of the application, the limiting pin shaft 3 is welded on the annular folded plate 1, and the long-strip-shaped sliding pin groove 21 is arranged on the cylindrical vertical plate 2. The limiting pin shaft 3 slides up and down along the pin groove 21 on the cylindrical vertical plate 2, so that the axial expansion difference of the inner cylinder 7 and the outer cylinder 8 can be absorbed, and the gap between the annular folded plate 1 and the cylindrical vertical plate 2 is sealed by adopting the elastic sealing piece 4, so that the sealing separation function is realized. A gap is formed between the cylindrical vertical plate 2 and the annular folded plate 1, and when the structure is heated and expanded, the elastic sealing element 4 can absorb the radial expansion difference between the inner cylinder and the outer cylinder.
In some embodiments, the limit pin 3 is disposed at an upper portion of the slot hole of the pin slot 21.
It should be noted that, when the coal gasifier is used, the temperature of the inner cylinder 7 is generally higher than the temperature of the outer cylinder 8, most of the inner cylinder 7 expands downward relative to the outer cylinder 8, so the limit pin 3 is located at the upper portion of the slot hole of the pin slot 21, so that when the limit pin 3 moves downward in the pin slot 21, there is more displacement space, and it is noted that the upper end of the limit pin 3 is not attached to the elastic sealing member 4, so that the limit pin 3 can also move upward, so the sealing structure in the embodiment of the present application can be suitable for various application scenarios, whether the temperature of the inner cylinder 7 is higher than the temperature of the outer cylinder 8 or the temperature of the inner cylinder 7 is lower than the temperature of the outer cylinder 8, and the sealing structure in the embodiment of the present application can be used.
In some embodiments, the sealing structure further comprises a clamping groove 9, and the lower part of the vertical component 12 and the upper part of the cylindrical riser 2 are respectively connected with the elastic sealing element 4 through the clamping groove 9; the height of the clamping groove 9 along the radial direction of the annular folded plate 1 is smaller than the height of the elastic sealing piece 4 along the radial direction of the annular folded plate 1.
In particular, in the present embodiment, the elastic sealing member 4 is connected to the lower portion of the vertical member 12 and the upper portion of the cylindrical riser 2 through the clamping groove 9, respectively. The elastic sealing member 4 needs to be higher than the locking groove 9, so that the elastic sealing member 4 can seal and absorb the radial expansion difference between the inner cylinder 7 and the outer cylinder 8 at the portion outside the locking groove 9.
The part of the elastic sealing element 4 in the clamping groove 9 is matched with the clamping groove 9, so that the firmness of the elastic sealing element 4 in the clamping groove 9 is ensured.
In some embodiments, the first annular plate 5 and the second annular plate 6 are of integrally formed construction.
In particular, the integrally formed structure makes the connection of the first annular plate 5 and the second annular plate 6 more secure.
In some embodiments, the sealing structure further comprises a supporting annular rib plate 10, and the second annular plate 6 is connected with the inner wall of the outer cylinder 8 through the supporting annular rib plate 10.
Specifically, the inner wall of the outer cylinder 8 and the second annular plate 6 are respectively welded with the supporting annular rib plate 10, and the supporting annular rib plate 10 can improve the rigidity of the second annular plate 6.
According to the technical scheme, the annular space separation sealing structure capable of absorbing axial and radial expansion is characterized by comprising an annular folded plate 1, a cylindrical vertical plate 2, a limiting pin shaft 3, an elastic sealing piece 4, a first annular plate 5 and a second annular plate 6; the annular folded plate 1 is fixedly sleeved on the outer wall of the inner cylinder 7; the annular folded plate 1 comprises a horizontal component 11 and a vertical component 12, and the horizontal component 11 is vertically and fixedly connected with the vertical component 12; the lower part of the vertical member 12 and the upper part of the cylindrical riser 2 are connected to the elastic seal 4, respectively; a plurality of pin grooves 21 are formed in the cylindrical vertical plate 2; the limiting pin shaft 3 is fixedly arranged on the vertical component 12; the limiting pin shaft 3 penetrates through the pin groove 21; the lower end of the cylindrical vertical plate 2 is connected with the upper end of the first annular plate 5; the first annular plate 5 is connected with the second annular plate 6, and the second annular plate 6 is fixedly sleeved on the inner wall of the outer cylinder 8. According to the embodiment of the application, the limiting pin shaft can slide in the pin groove and can absorb the axial expansion difference between the inner cylinder and the outer cylinder, the elastic sealing piece can absorb the radial expansion difference between the inner cylinder and the outer cylinder, and finally the sealing structure can achieve the purposes of sealing separation and absorbing the axial expansion difference and the radial expansion difference between the inner cylinder and the outer cylinder.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It is to be understood that the present application is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (4)
1. An annular space separation sealing structure capable of absorbing axial and radial expansion is characterized by comprising an annular folded plate (1), a cylindrical vertical plate (2), a limiting pin shaft (3), an elastic sealing piece (4), a first annular plate (5) and a second annular plate (6);
the annular folded plate (1) is fixedly sleeved on the outer wall of the inner cylinder (7); the annular folded plate (1) comprises a horizontal component (11) and a vertical component (12), and the horizontal component (11) is vertically and fixedly connected with the vertical component (12);
the lower part of the vertical component (12) and the upper part of the cylindrical riser (2) are respectively connected with the elastic sealing piece (4); a plurality of pin grooves (21) are formed in the cylindrical vertical plate (2); the limiting pin shaft (3) is fixedly arranged on the vertical component (12); the limit pin shaft (3) penetrates through the pin groove (21); the pin groove (21) is of a strip-shaped structure, the limit pin shaft (3) is arranged on the upper portion of a slotted hole of the pin groove (21), and when the inner cylinder (7) expands downwards, the limit pin shaft (3) slides downwards along the pin groove (21) on the cylindrical vertical plate (2);
the lower end of the cylindrical vertical plate (2) is connected with the upper end of the first annular plate (5);
the first annular plate (5) is connected with the second annular plate (6), and the second annular plate (6) is fixedly sleeved on the inner wall of the outer cylinder (8).
2. An annular space-dividing seal structure capable of absorbing axial and radial expansion according to claim 1, characterized in that it further comprises a clamping groove (9), the lower part of the vertical member (12) and the upper part of the cylindrical riser (2) being connected to an elastic seal (4) by means of the clamping groove (9), respectively; the thickness of the clamping groove (9) along the radial direction of the annular folded plate (1) is smaller than the thickness of the elastic sealing piece (4) along the radial direction of the annular folded plate (1).
3. An annular space separating seal structure capable of absorbing axial and radial expansion according to claim 1, characterized in that the first annular plate (5) and the second annular plate (6) are of an integrally formed structure.
4. An annular space-dividing seal structure capable of absorbing axial and radial expansion according to claim 1, further comprising a supporting annular rib (10), said second annular plate (6) being connected to the inner wall of said outer cylinder (8) by said supporting annular rib (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811382997.6A CN109370663B (en) | 2018-11-20 | 2018-11-20 | Annular space separation sealing structure capable of absorbing axial and radial expansion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811382997.6A CN109370663B (en) | 2018-11-20 | 2018-11-20 | Annular space separation sealing structure capable of absorbing axial and radial expansion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109370663A CN109370663A (en) | 2019-02-22 |
| CN109370663B true CN109370663B (en) | 2024-03-19 |
Family
ID=65376558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811382997.6A Active CN109370663B (en) | 2018-11-20 | 2018-11-20 | Annular space separation sealing structure capable of absorbing axial and radial expansion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109370663B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112460639A (en) * | 2020-10-27 | 2021-03-09 | 中国船舶重工集团公司第七0三研究所 | Elastic supporting structure for bidirectional expansion compensation of gas turbine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD136528A1 (en) * | 1978-05-17 | 1979-07-11 | Guenther Freiwald | COMPENSATOR FOR VERTICAL AND HORIZONTAL STRETCHING |
| CN101451704A (en) * | 2007-11-28 | 2009-06-10 | 中国恩菲工程技术有限公司 | Inlet sealing and connecting device for exhaust-heating boiler |
| KR20120040460A (en) * | 2010-10-19 | 2012-04-27 | 어수곤 | Expansion joint with up, down, left and right movement |
| CN204437558U (en) * | 2015-01-29 | 2015-07-01 | 昆明锅炉有限责任公司 | With the low-pressure tube type waste heat steam boiler of expansion joint |
| CN204785170U (en) * | 2015-07-08 | 2015-11-18 | 河南昌茂供水设备有限公司 | Hinge rubber connector |
| CN205535729U (en) * | 2016-01-18 | 2016-08-31 | 无锡华光锅炉股份有限公司 | Exhaust -heat boiler's flexible sealing structure |
| CN209113825U (en) * | 2018-11-20 | 2019-07-16 | 宁夏神耀科技有限责任公司 | A kind of absorbable annular space parting seal structure axially and radially expanded |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103988009B (en) * | 2011-08-22 | 2019-11-26 | 维克托里克公司 | Expansion pipe |
-
2018
- 2018-11-20 CN CN201811382997.6A patent/CN109370663B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD136528A1 (en) * | 1978-05-17 | 1979-07-11 | Guenther Freiwald | COMPENSATOR FOR VERTICAL AND HORIZONTAL STRETCHING |
| CN101451704A (en) * | 2007-11-28 | 2009-06-10 | 中国恩菲工程技术有限公司 | Inlet sealing and connecting device for exhaust-heating boiler |
| KR20120040460A (en) * | 2010-10-19 | 2012-04-27 | 어수곤 | Expansion joint with up, down, left and right movement |
| CN204437558U (en) * | 2015-01-29 | 2015-07-01 | 昆明锅炉有限责任公司 | With the low-pressure tube type waste heat steam boiler of expansion joint |
| CN204785170U (en) * | 2015-07-08 | 2015-11-18 | 河南昌茂供水设备有限公司 | Hinge rubber connector |
| CN205535729U (en) * | 2016-01-18 | 2016-08-31 | 无锡华光锅炉股份有限公司 | Exhaust -heat boiler's flexible sealing structure |
| CN209113825U (en) * | 2018-11-20 | 2019-07-16 | 宁夏神耀科技有限责任公司 | A kind of absorbable annular space parting seal structure axially and radially expanded |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109370663A (en) | 2019-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5288137B2 (en) | Dynamic shaft seal and its mounting method | |
| US7624991B2 (en) | Seal ring and method | |
| CN102927273B (en) | Sealing and the seal arrangement obtained thus | |
| JP6125329B2 (en) | Stationary seal structure | |
| CN101122338A (en) | Non-asbestos seal gasket | |
| CN109370663B (en) | Annular space separation sealing structure capable of absorbing axial and radial expansion | |
| CN103782071A (en) | Radial shaft seal, radial shaft seal assembly and method of installation | |
| US20180128288A1 (en) | Accumulator | |
| JP6254305B2 (en) | Sealing device for sealing a gap between two members that abut against each other on the side of the gap at room temperature | |
| JP2018508726A (en) | seal | |
| CN106322012A (en) | Clamp type pipe joint | |
| CN105782445A (en) | High-compression high-springback radial seal assembly | |
| CN209113825U (en) | A kind of absorbable annular space parting seal structure axially and radially expanded | |
| CN220930180U (en) | Sealing element | |
| CN210600578U (en) | Sealing rubber pad for connecting corrugated pipe | |
| CN101828039B (en) | Pressure vessel having a lid | |
| CN219734061U (en) | Air spring top cover sealing structure, air spring assembly and vehicle | |
| CN108956106B (en) | Double-rotor turbine test piece | |
| CN220930521U (en) | Expansion joint with dustproof function | |
| CN110822093A (en) | Silicon rubber sealing element | |
| CN114135728B (en) | Sealing structure of flexible multi-point support | |
| CN117146089B (en) | Bellows expansion joint and bellows thereof | |
| CN219159820U (en) | Double-ripple metal expansion joint | |
| CN209735403U (en) | Seal assembly structure and agitating unit | |
| CN110778633B (en) | Cylinder device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |