CN115162410A - Sliding contact type pressure sealing device and application - Google Patents
Sliding contact type pressure sealing device and application Download PDFInfo
- Publication number
- CN115162410A CN115162410A CN202210930001.0A CN202210930001A CN115162410A CN 115162410 A CN115162410 A CN 115162410A CN 202210930001 A CN202210930001 A CN 202210930001A CN 115162410 A CN115162410 A CN 115162410A
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- CN
- China
- Prior art keywords
- pressure
- sealing device
- capsule
- push
- wiping
- 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
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 53
- 239000002775 capsule Substances 0.000 claims abstract description 53
- 238000010276 construction Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 238000004078 waterproofing Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002633 protecting effect Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/063—Tunnels submerged into, or built in, open water
- E02D29/073—Tunnels or shuttering therefor assembled from sections individually sunk onto, or laid on, the water-bed, e.g. in a preformed trench
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
Abstract
A wiping pressure seal device is provided, comprising a pressure capsule on a first portion; the pressure capsule is provided with a capsule cavity which can be filled with pressure medium to expand to form a sealing layer; the pressure capsule is provided with a fixing band which can connect the pressure capsule to the first part. The water stopping device can realize water stopping of a gap between the surfaces of two relatively sliding components in a water environment, and can be well applied to pressure sealing and water proofing of the push-out type final joint of the immersed tube type underwater tunnel.
Description
Technical Field
The application belongs to the field of hydraulic engineering and relates to a sliding contact type pressure sealing device and application.
Background
The push-out final joint of the immersed tube tunnel is a structural form of the final joint of the immersed tube type underwater tunnel. The push-out type final joint generally comprises an expansion section and a push-out section, and after the sinking is finished, the push-out section is pushed out from the expansion section, so that the front end of the push-out section is butted with the end part of the sinking pipe which is installed in place, and the underwater butt-joint and penetration of the whole tunnel can be finished.
In the process of butting the push-out final joint of the immersed tube tunnel and the end part of the installed immersed tube, water needs to be stopped in a gap between the push-out section and the expansion section. In the pushing process of the pushing section, the pushing section and the expanding section are in a relative sliding state, namely, a gap between the surfaces of the two members in the relative sliding state needs to be sealed. In particular, the surface flatness of civil engineering components is far inferior to that of machined parts, and the size of the gap between the surfaces varies slightly when the two components slide relative to each other, which makes the design of the water stopping structure more difficult.
Disclosure of Invention
The application provides a wiping type pressure sealing device and application, can realize watertight under the condition of keeping with component surface sliding contact.
A first aspect of the present application provides a wiping pressure sealing device, including:
a pressure capsule located on the first portion; the pressure capsule is provided with a capsule cavity which can be filled with pressure medium to expand to form a sealing layer;
the pressure capsule is provided with a fixing band which can connect the pressure capsule to the first part.
Optionally, the pressure capsule is located in a space enclosed by the securing strap and the first portion.
Optionally, at least a portion of the securing strap is elastic.
Optionally, the sealing layer formed by the expansion of the pressure capsule can be tightly connected with the second part; the second portion is movable relative to the first portion.
More specifically, the second portion is movable relative to the first portion after the sealing layer is formed between the first and second portions.
Optionally, the mounting points of the fixing band on the first part are distributed on two sides of the capsule, and the fixing band is mounted on the first part from two sides of the pressure capsule; the fixing belt constitutes a pull in the direction of movement of the second portion.
Optionally, a wear portion is provided between the pressure capsule and the second portion.
Optionally, the wear-resistant part and the fixing band can be of an integral structure; the thickness of the wear-resistant part is 0.1-10mm.
Optionally, the pressure capsule and the fixing band are of an integrally formed structure.
A second aspect of the present application provides a use of a sliding contact type pressure sealing device in a push-out type final joint of a immersed tube tunnel, where the sealing device may adopt the sliding contact type pressure sealing device described in any one of the above aspects, the first portion is an expanded section of the push-out type final joint of the immersed tube tunnel, the second portion is a push-out section of the push-out type final joint of the immersed tube tunnel, and the push-out section is located in the expanded section; the sealing device is arranged between the push-out section and the expansion section, can form sealing, and realizes the sliding of the push-out section relative to the expansion section.
Compared with the prior art, the beneficial effect of this application is:
the sliding contact type pressure sealing device provided by at least one embodiment of the application can realize water stop of a gap between the surfaces of two relatively sliding components in a water environment, and can be well applied to pressure sealing and water prevention of a push-out type final joint of a immersed tube type underwater tunnel.
According to the sliding contact type pressure sealing device provided by at least one embodiment of the application, the surface of the sealing device, which is tightly connected with a component, can keep smooth and flat due to the drawing action of the fixing belt, and a water channel is not formed due to the wrinkles caused by the friction action and relative sliding between the tightly connected surfaces.
The sliding contact type pressure sealing device provided by at least one embodiment of the application is simple in structure and convenient to construct.
Drawings
FIG. 1 is a schematic view of one embodiment of a wiping pressure seal;
FIG. 2 is a schematic view of one embodiment of a wiping pressure seal;
FIG. 3 is an application of an embodiment of a sealing device;
FIG. 4 is a longitudinal section of FIG. 3;
FIG. 5 is an enlarged view of a portion of FIG. 4;
numbering in the figures: the sliding contact type pressure sealing device comprises a sliding contact type pressure sealing device, a first part, an expansion section, a first expansion section 21, a second expansion section 22, a pressure capsule 3, a capsule cavity 31, a fixing belt 4, a second part, a push-out section 5 and a wear-resisting part 6.
Detailed Description
The technical solutions of the present application are explained in detail below with reference to specific embodiments, however, it should be understood that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the description of the present application, it is to be understood that the terms "upper," "lower," "bottom," "inner," and the like are used in the positional or orientational relationships shown in fig. 4 to facilitate the description of the application and to simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular orientation, and therefore should not be construed as limiting the application.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.
As shown in fig. 1 to 2, a first embodiment of the present application provides a sliding contact type pressure sealing device 1 (hereinafter, may be simply referred to as a sealing device) including a pressure capsule 3 provided on a first portion 2, the pressure capsule 3 being provided with a fixing band 4 for mounting the pressure capsule 3 on the first portion 2.
Fig. 1 and 2 show a cross-sectional view of a sliding contact pressure seal 1. The pressure capsule 3 has a chamber 31 into which a pressure medium, such as a gas, can be introduced to expand the pressure capsule 3, so that a sealing layer is formed.
The pressure capsule 3 may also be in contact with a second portion 5, the second portion 5 being slidable relative to the first portion 2 so that the expanded pressure capsule 3 can be in sealed contact therebetween to form the sealing layer and divide the space formed between the first and second portions into two.
In one embodiment, the first portion 2 is a fixed portion, and the second portion 5 is a sliding portion; a wear-resistant part 6 is arranged between the pressure capsule 3 and the second part 5; the thickness of the wear-resistant part 6 is 0.05-20mm, preferably 0.1-10mm; the wear-resistant part 6 can be made of natural rubber, various synthetic rubbers, or other high polymer materials, etc. which satisfy the wear-resistant performance, so as to reduce or reduce the wear of the second part 5 on the pressure capsule 3 in the sliding process. Alternatively, the wear part 6 may be of unitary construction with the fixation band 4, i.e. the portion of the fixation band 4 located between the pressure capsule 3 and the second part 5 acts as the wear part 6. Such setting is more convenient for production and processing and construction installation for two functions can be realized simultaneously to a fixed band 4.
As an embodiment, the fixing belt 4 is pulled along the moving direction of the second portion 5 (vertical direction in fig. 1 and 2); the fixing strap 4 is arranged on the first part 2 from two sides of the pressure capsule 3; the pressure capsule 3 is constrained within the space enclosed by the fixing band 4, thus fixing it to the surface of the first portion 2. The two ends of the fixing band 4 can be connected with the first part 2 in a sealing way, so as to form an additional sealing layer outside the cavity 31 of the pressure capsule 3; of course, the sealing connection may not be provided, and a continuous sealing layer may be formed between the first portion 2 and the second portion 5, following the sealing layer formed by the pressure capsule 3, as long as the portion sandwiched between the pressure capsule 3 and the second portion 5 is provided with a tightly-adhered water-impermeable material.
In the present embodiment, when the second portion 5 moves, the pressure capsule 3 cannot translate and twist due to the pulling and protecting effects of the fixing band 4, and cannot be easily pinched and wrinkled by the second portion 5, thereby ensuring the sealing performance. Meanwhile, the sealing device has high reliability due to the fixation and protection of the fixing belt 4, and can independently bear the sealing function.
As an embodiment, as shown in fig. 2, the pressure capsule 3 and the fixing band 4 may also be an integrally formed structure, and the pressure capsule 3 is wrapped by the fixing band 4. A part of the fastening strap 4 or the wear part 6 may serve as a wall of the pressure capsule 3. The pressure capsule 3 and the fixing band 4 can be made of flexible and waterproof materials, such as elastic rubber. The fixing band 4 has elasticity or maintains a predetermined slack so as to be adaptively deformed according to the expansion of the pressure capsule 3, thereby fixing the pressure capsule 3.
Before the pressure capsule 3 is inflated, the securing strap 4 is kept in a relaxed state, thereby allowing room for the pressure capsule 3 to expand. The pressure capsule 3 is inflated by filling and pressurizing the pressure capsule 3, so that the pressure capsule 3 and the wear-resistant part 6 are pressed on the second part 5, and the outer surface of the sliding contact type pressure sealing device 1 is slidably attached to the second part 5.
A second embodiment of the present application provides a use of a sliding contact type pressure sealing device in a push-out type final joint of a immersed tube tunnel, wherein the sliding contact type pressure sealing device 1 can adopt the sliding contact type pressure sealing device 1 of any one of the previous embodiments, as shown in fig. 3-5, the first part 2 is an expanding section 2 of the push-out type final joint of the immersed tube tunnel, a first expanding section 21 and a second expanding section 22 are respectively shown in the figures, the second part 5 is a push-out section 5 of the push-out type final joint of the immersed tube tunnel, and the push-out section 5 is positioned in the expanding section 2; the pressure capsule 3 and the fixing band 4 of the sealing device 1 are strip-shaped and two ends of the pressure capsule are butted to form a ring; wherein, the annular sealing device 1 is arranged on the inner surface of the expanding section 2, can contact with the outer surface of the pushing-out section 5 after being expanded and can be in sliding close contact with the pushing-out section.
In the embodiment, in the application process, the pressure capsule 3 of the sealing device is not easy to be distorted and deformed due to the wrapping of the fixing band 4, so that the reliability of the whole sealing device is improved, and the sealing function can be independently assumed. Therefore, when the anti-leakage device is applied to the immersed tube joint, the anti-leakage device does not need to work together with the conventional surrounding type water stop, so that the conventional surrounding type water stop can be completely abandoned, and the construction is convenient.
The embodiments described above are merely preferred embodiments of the present application, and are not intended to limit the scope of the present application, and various modifications and improvements made to the technical solutions of the present application by those skilled in the art without departing from the spirit of the present application should fall within the protection scope defined by the claims of the present application.
Claims (10)
1. A wiping pressure seal assembly, comprising:
a pressure capsule located on the first portion; the pressure capsule is provided with a capsule cavity which can be filled with pressure medium to expand to form a sealing layer;
the pressure capsule is provided with a fixing band which can connect the pressure capsule to the first part.
2. The wiping pressure sealing device of claim 1 wherein the pressure bladder is located in a space between the retention strap and the first portion.
3. The wiping pressure sealing device of claim 2 wherein at least a portion of the retention strap is resilient.
4. The sliding contact pressure seal according to any of claims 1 to 3, wherein the sealing layer formed by expansion of the pressure bladder is adapted to fit tightly against the second portion; the second portion is movable relative to the first portion.
5. The wiping pressure seal of claim 4 wherein the second portion is movable relative to the first portion after the seal layer is formed between the first and second portions.
6. The wiping pressure sealing device of claim 5 wherein the securing strap is attached to the first portion from both sides of the pressure bladder and constitutes a pull in the direction of movement of the second portion.
7. The wiping pressure seal of claim 5 wherein a wear portion is provided between the pressure bladder and the second portion.
8. The wiping pressure seal of claim 7 wherein the wear portion is of unitary construction with the retention strap; the thickness of the wear-resistant part is 0.1-10mm.
9. The wiping pressure sealing device of any of claims 1-3, wherein the pressure bladder is integrally formed with the retention strap; the fixing band is made of flexible and waterproof materials.
10. Use of a wiping pressure sealing device in a push-out final joint for a immersed tube tunnel, using a wiping pressure sealing device as claimed in any of claims 4 to 8, the first portion being an enlarged section of the push-out final joint for a immersed tube tunnel, the second portion being a push-out section of the push-out final joint for a immersed tube tunnel, the push-out section being located in the enlarged section; the sliding contact type pressure sealing device is annular, is arranged on the inner surface of the expansion section, and can be in sliding tight joint with the outer surface of the push-out section after being expanded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210930001.0A CN115162410A (en) | 2022-08-03 | 2022-08-03 | Sliding contact type pressure sealing device and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210930001.0A CN115162410A (en) | 2022-08-03 | 2022-08-03 | Sliding contact type pressure sealing device and application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115162410A true CN115162410A (en) | 2022-10-11 |
Family
ID=83476735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210930001.0A Pending CN115162410A (en) | 2022-08-03 | 2022-08-03 | Sliding contact type pressure sealing device and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115162410A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003049442A (en) * | 2001-08-06 | 2003-02-21 | Taisei Corp | Flexible joint device for submerged caisson and its repair method |
| CN102852526A (en) * | 2012-09-26 | 2013-01-02 | 三一重工股份有限公司 | Mortar stopping sealing device of shield tunneling machine and shield tunneling machine |
| CN207297041U (en) * | 2017-09-30 | 2018-05-01 | 济南市市政工程设计研究院（集团）有限责任公司 | A kind of changeable type inflatable waterstop for Tunneling by mining method |
| CN108316356A (en) * | 2018-03-13 | 2018-07-24 | 中交公路规划设计院有限公司 | A kind of immersed tube tunnel FS final spice and its construction method |
| CN111828094A (en) * | 2020-06-30 | 2020-10-27 | 上海大学 | Deep-buried earth pressure balance shield hole-entering double-air-bag sealing device and sealing method thereof |
| CN215761683U (en) * | 2021-09-22 | 2022-02-08 | 西北橡胶塑料研究设计院有限公司 | Emergency air bag sealing assembly for shield tail brush of shield machine |
-
2022
- 2022-08-03 CN CN202210930001.0A patent/CN115162410A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003049442A (en) * | 2001-08-06 | 2003-02-21 | Taisei Corp | Flexible joint device for submerged caisson and its repair method |
| CN102852526A (en) * | 2012-09-26 | 2013-01-02 | 三一重工股份有限公司 | Mortar stopping sealing device of shield tunneling machine and shield tunneling machine |
| CN207297041U (en) * | 2017-09-30 | 2018-05-01 | 济南市市政工程设计研究院（集团）有限责任公司 | A kind of changeable type inflatable waterstop for Tunneling by mining method |
| CN108316356A (en) * | 2018-03-13 | 2018-07-24 | 中交公路规划设计院有限公司 | A kind of immersed tube tunnel FS final spice and its construction method |
| CN111828094A (en) * | 2020-06-30 | 2020-10-27 | 上海大学 | Deep-buried earth pressure balance shield hole-entering double-air-bag sealing device and sealing method thereof |
| CN215761683U (en) * | 2021-09-22 | 2022-02-08 | 西北橡胶塑料研究设计院有限公司 | Emergency air bag sealing assembly for shield tail brush of shield machine |
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