CN106594449A - Air inflation sealing device for large-diameter pipeline - Google Patents
Air inflation sealing device for large-diameter pipeline Download PDFInfo
- Publication number
- CN106594449A CN106594449A CN201710107285.2A CN201710107285A CN106594449A CN 106594449 A CN106594449 A CN 106594449A CN 201710107285 A CN201710107285 A CN 201710107285A CN 106594449 A CN106594449 A CN 106594449A
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- China
- Prior art keywords
- air inflation
- valve plate
- sealing device
- pipeline
- gas
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- 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.)
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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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
- F16L55/163—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a ring, a band or a sleeve being pressed against the inner surface of the pipe
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The invention discloses an air inflation sealing device for a large-diameter pipeline. The air inflation sealing device is arranged at the joint of a pipeline I and a pipeline II and comprises a connecting segment, a valve plate, air inflation sealing rings and a seal plate. The connecting segment is arranged between the pipeline I and the pipeline II. An annular inserting groove is formed in the inner side face of the connecting segment. The periphery of the valve plate is arranged in the annular inserting groove, and the connecting segment is cut off. The air inflation sealing rings are arranged between the valve plate and the annular inserting groove. A through groove communicating with the outer portion of the connecting segment is formed in the upper side edge of the annular inserting groove. The seal plate is arranged in the through groove. According to the air inflation sealing device, air inflation sealing expansion is utilized, no external pressure is needed, a large clearance can be sealed, and sealing can be achieved under the conditions of bent sealing faces, concave-convex sealing faces and the like. Meanwhile, due to the fact that air inflation is not achieved during assembly, the phenomena of friction, tearing and the like between the sealing rings and the sealing faces cannot be generated. Compared with compression sealing, no creep phenomenon is generated, and the stable sealing performance can be kept for a long time.
Description
Technical field
The present invention relates to mechanical hydrostatic seal technical field, more particularly to a kind of gas-flow closure dress for large diameter pipeline
Put.
Background technology
The large diameter pipeline of internal high-cleanness, high is used for large scientific facilities engineering project, due to internal purity requirements height,
Physical dimension is larger.Its local interior needs this local pipe to open with other pipeline isolations when other devices are changed, to ensure
Replacement operation does not affect the cleanliness factor inside other parts pipeline.Due to large diameter pipeline sealing periphery it is longer, and be difficult do
To the gap very little between sealing structure and pipeline, while needing to ensure the agility of sealing action.
Traditional sealing by the way of sealing ring, needs external pressure to compress mostly, and the decrement of sealing ring needs accurately
Calculate.Once sealing surface occur it is crooked, bending or it is concavo-convex situations such as, the sealing effectiveness of sealing ring can be reduced.And when long
Between use, there is creep in sealing ring, and sealing effectiveness can also lower.
The content of the invention
The purpose of the present invention is that to solve the above problems and provides a kind of gas-flow closure for large diameter pipeline
Device.
The present invention is achieved through the following technical solutions above-mentioned purpose：
A kind of air inflation sealing device for large diameter pipeline, the air inflation sealing device are arranged on pipeline I and pipeline II
Junction, the air inflation sealing device includes linkage section, valve plate, gas-flow closure circle and shrouding, and the linkage section is arranged on institute
State between pipeline I and the pipeline II, on the medial surface of the linkage section, be provided with annular slot, the surrounding of the valve plate is arranged
Separate in the annular slot and by the linkage section, the gas-flow closure circle is arranged on the valve plate with the annular slot
Between, the upper side edge of the annular slot is provided with the groove with the linkage section ft connection, and the shrouding is arranged on described
In groove.
Specifically, the shrouding is detachably connected with the linkage section by Quick connection part, the Quick connection part
First end is rotatably connected with the lateral surface of the linkage section, and the second end of the Quick connection part passes through screw and the shrouding
It is fixedly connected, is sealed by rubber sheet gasket between the Quick connection part and the shrouding.
Specifically, the surrounding of two sides of the valve plate is provided with cannelure, and the gas-flow closure circle is fitted in institute
State in cannelure；
The gas-flow closure circle includes that three are faced directly and a cambered surface, face directly described in three three side right-angle structures of composition with
The medial surface bonding of the cannelure, the gas-flow closure circle are elastic rubber material, be provided with and fill on the gas-flow closure circle
Valve, the charging connector are fixedly connected with the upper side edge of the valve plate.
Further, the thickness of the valve plate is equal with the width of the annular slot, arranges on the upper side edge of the valve plate
There is the handle for lifting.
Preferably, lightening grooves are provided with the middle part of the valve plate, in the lightening grooves, are provided with reinforcement.
The beneficial effects of the present invention is：
Air inflation sealing device itself expanding by gas-flow closure of the present invention for large diameter pipeline, it is not necessary to external pressure, can
To seal very big gap, and bend in sealing surface, it is concavo-convex when, can also realize sealing.Simultaneously because during assembling not
Inflation, will not produce the phenomenons such as friction between sealing ring and sealing surface, tear.Compared with compression seal, creep will not be produced
Phenomenon, can keep stable sealing property for a long time.
Description of the drawings
Fig. 1 is the structural representation of the air inflation sealing device for large diameter pipeline of the present invention, and in figure, state 1 is envelope
The scheme of installation for closing, scheme of installation of the state 2 for valve plate；
Fig. 2 is the A-A generalized sections of Fig. 1；
Fig. 3 is the scheme of installation of the valve plate；
Fig. 4 is the C-C generalized sections of Fig. 1；
Fig. 5 is the partial schematic sectional view of Fig. 4；
Fig. 6 is the B-B generalized sections of Fig. 1；
Fig. 7 is the structural representation of the gas-flow closure circle；
Fig. 8 is the D-D generalized sections of Fig. 7；
Specific embodiment
1～8 the invention will be further described below in conjunction with the accompanying drawings：
A kind of air inflation sealing device for large diameter pipeline, air inflation sealing device are arranged on pipeline I 2 with pipeline II 5
Junction, air inflation sealing device include linkage section, valve plate 3, gas-flow closure circle and shrouding 1, and linkage section is arranged on pipeline I 2 with pipe
Between road II 5, annular slot 4 on the medial surface of linkage section, is provided with, the surrounding of valve plate 3 is arranged in annular slot 4 and will connect
Section cut-off is connect, gas-flow closure circle is arranged between valve plate 3 and annular slot 4, and the upper side edge of annular slot 4 is provided with and linkage section
The groove of ft connection, shrouding 1 are arranged in groove, and the thickness of valve plate 3 is equal with the width of annular slot 4, the upside of valve plate 3
The handle 10 for lifting is provided with side, the middle part of valve plate 3 is provided with lightening grooves, reinforcement is provided with lightening grooves.Shrouding 1
It is detachably connected by Quick connection part 7 and linkage section, the first end of Quick connection part 7 is rotatably connected with the lateral surface of linkage section
Connect, the second end of Quick connection part 7 is fixedly connected with shrouding 1 by screw 6, between Quick connection part 7 and shrouding 1, pass through rubber
Pad 8 is sealed, and the surrounding of two sides of valve plate 3 is provided with cannelure, and gas-flow closure circle is fitted in cannelure；Inflation is close
Seal includes that three are faced directly and a cambered surface, and three three side right-angle structures for facing composition directly are bonding with the medial surface of cannelure, fill
Airtight seal is elastic rubber material, and charging connector is provided with gas-flow closure circle, and charging connector is connected with the upper side edge fixation of valve plate 3
Connect.
The present invention is as follows for the operation principle of the air inflation sealing device of large diameter pipeline：
Shrouding 1 is installed above groove during routine use above annular slot 4, the unimpeded of pipeline internal gas flow is kept, together
When avoid from groove go out occur leakage, connected by Quick connection part 7 between shrouding 1 and linkage section.
During maintenance, shrouding 1 is removed, valve plate 3 is inserted in annular slot 4, the bonding on the cannelure of 3 both sides of valve plate
Gas-flow closure circle gas injection so that gas-flow closure circle expands, and arc deformation reaches sealing effect with annular 4 interior contact of slot
Really.
11st, gas-flow closure circle is made using gum, and seal pressure is more than 0.2MPa, and expansion desired gas pressure is more than
0.3MPa。
3 core of valve plate carries out loss of weight design, and adds crossed stiffened plate to strengthen, and realizes the light operation of valve plate 3 during maintenance.
4 bottom of annular slot of valve plate 3 carries out back chipping process, it is ensured that occur without wrinkle situation during gas-flow closure circle bonding.
Gap between valve plate 3 and annular slot 4 is not more than 5mm, and its gap can adjust, corresponding gas-flow closure circle
Swell increment is adjusted therewith, and wide arc gap is easy to the installation of valve plate 3 and is exited.
In Fig. 3,13 and 14 are charging connector, and which is respectively the charging connector of two different gas-flow closure circles；In Fig. 5,11
It is gas-flow closure ring with 12 innings, which is respectively the different gas-flow closure circle on two sides of valve plate 3, and handle 10 is by connection
Nail 9 is connected with valve plate 3.
Technical scheme is not limited to the restriction of above-mentioned specific embodiment, and every technology according to the present invention scheme is done
The technology deformation for going out, each falls within protection scope of the present invention.
Claims (5)
1. a kind of air inflation sealing device for large diameter pipeline, it is characterised in that：The air inflation sealing device is arranged on pipeline I
With the junction of pipeline II, the air inflation sealing device includes linkage section, valve plate, gas-flow closure circle and shrouding, the linkage section
It is arranged between the pipeline I and the pipeline II, on the medial surface of the linkage section, is provided with annular slot, the valve plate
Surrounding is arranged in the annular slot and separates the linkage section, the gas-flow closure circle be arranged on the valve plate with it is described
Between annular slot, the upper side edge of the annular slot is provided with the groove with the linkage section ft connection, and the shrouding sets
Put in the groove.
2. the air inflation sealing device for large diameter pipeline according to claim 1, it is characterised in that：The shrouding passes through
Quick connection part is detachably connected with the linkage section, and the lateral surface of the first end of the Quick connection part and the linkage section can
Connection is rotated, the second end of the Quick connection part is fixedly connected with the shrouding by screw, the Quick connection part and institute
State.
3. the air inflation sealing device for large diameter pipeline according to claim 1, it is characterised in that：The two of the valve plate
The surrounding of individual side is provided with cannelure, and the gas-flow closure circle is fitted in the cannelure；
The gas-flow closure circle includes that three are faced directly and a cambered surface, face directly described in three three side right-angle structures of composition with it is described
The medial surface bonding of cannelure, the gas-flow closure circle are elastic rubber material, are provided with charging connector on the gas-flow closure circle,
The charging connector is fixedly connected with the upper side edge of the valve plate.
4. the air inflation sealing device for large diameter pipeline according to claim 1, it is characterised in that：The thickness of the valve plate
Degree is equal with the width of the annular slot, and the handle for lifting is provided with the upper side edge of the valve plate.
5. the air inflation sealing device for large diameter pipeline according to claim 2, it is characterised in that：In the valve plate
Portion is provided with lightening grooves, is provided with reinforcement in the lightening grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710107285.2A CN106594449B (en) | 2017-02-27 | 2017-02-27 | Air inflation sealing device for large diameter pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710107285.2A CN106594449B (en) | 2017-02-27 | 2017-02-27 | Air inflation sealing device for large diameter pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106594449A true CN106594449A (en) | 2017-04-26 |
| CN106594449B CN106594449B (en) | 2018-08-21 |
Family
ID=58588088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710107285.2A Active CN106594449B (en) | 2017-02-27 | 2017-02-27 | Air inflation sealing device for large diameter pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106594449B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111425692A (en) * | 2020-03-30 | 2020-07-17 | 杨亚东 | Safety pipeline |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0664417A2 (en) * | 1993-11-29 | 1995-07-26 | Van Beugen Beheer B.V. | Expandable sealing element and sheath therefor |
| CN201326869Y (en) * | 2008-11-27 | 2009-10-14 | 秦山核电有限公司 | Inflatable closure plug |
| CN102494133A (en) * | 2011-11-29 | 2012-06-13 | 济南轨道交通装备有限责任公司 | Seal ring |
| CN203147152U (en) * | 2013-03-27 | 2013-08-21 | 中国石油天然气管道局第四工程分公司 | Air-bag-type pipeline plugging device |
| CN203488917U (en) * | 2013-07-24 | 2014-03-19 | 金才成 | Water-shutoff diversion inflatable rubber airbag |
| CN103836298A (en) * | 2012-11-22 | 2014-06-04 | 中国石油天然气股份有限公司 | Pipeline isolator |
| CN203684982U (en) * | 2014-01-06 | 2014-07-02 | 台山平安五金制品有限公司 | Large air gate and sealing device thereof |
| CN204127564U (en) * | 2014-10-27 | 2015-01-28 | 中国石油天然气集团公司 | Tire tube air-inflating formula plugging apparatus for pipe end |
| CN206478377U (en) * | 2017-02-27 | 2017-09-08 | 中国工程物理研究院总体工程研究所 | Air inflation sealing device for large diameter pipeline |
-
2017
- 2017-02-27 CN CN201710107285.2A patent/CN106594449B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0664417A2 (en) * | 1993-11-29 | 1995-07-26 | Van Beugen Beheer B.V. | Expandable sealing element and sheath therefor |
| CN201326869Y (en) * | 2008-11-27 | 2009-10-14 | 秦山核电有限公司 | Inflatable closure plug |
| CN102494133A (en) * | 2011-11-29 | 2012-06-13 | 济南轨道交通装备有限责任公司 | Seal ring |
| CN103836298A (en) * | 2012-11-22 | 2014-06-04 | 中国石油天然气股份有限公司 | Pipeline isolator |
| CN203147152U (en) * | 2013-03-27 | 2013-08-21 | 中国石油天然气管道局第四工程分公司 | Air-bag-type pipeline plugging device |
| CN203488917U (en) * | 2013-07-24 | 2014-03-19 | 金才成 | Water-shutoff diversion inflatable rubber airbag |
| CN203684982U (en) * | 2014-01-06 | 2014-07-02 | 台山平安五金制品有限公司 | Large air gate and sealing device thereof |
| CN204127564U (en) * | 2014-10-27 | 2015-01-28 | 中国石油天然气集团公司 | Tire tube air-inflating formula plugging apparatus for pipe end |
| CN206478377U (en) * | 2017-02-27 | 2017-09-08 | 中国工程物理研究院总体工程研究所 | Air inflation sealing device for large diameter pipeline |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111425692A (en) * | 2020-03-30 | 2020-07-17 | 杨亚东 | Safety pipeline |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106594449B (en) | 2018-08-21 |
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