CN104048124B - Redundant seal pipe joint - Google Patents
Redundant seal pipe joint Download PDFInfo
- Publication number
- CN104048124B CN104048124B CN201410228114.1A CN201410228114A CN104048124B CN 104048124 B CN104048124 B CN 104048124B CN 201410228114 A CN201410228114 A CN 201410228114A CN 104048124 B CN104048124 B CN 104048124B
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- CN
- China
- Prior art keywords
- seal
- collar flange
- pipe joint
- face
- redundant
- 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.)
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Classifications
-
- 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
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/032—Flanged joints the flanges being connected by members tensioned axially characterised by the shape or composition of the flanges
-
- 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
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
- G01M3/08—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds
- G01M3/085—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds for pipe joints or seals
-
- 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
- F16L2201/00—Special arrangements for pipe couplings
- F16L2201/30—Detecting leaks
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Joints With Pressure Members (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
Redundant seal pipe joint of the present invention is related to a kind of pipe joint in the loading system higher to seal request.Its purpose is to provide a kind of simple structure, sealed reliable, easily to operate, while the redundant seal pipe joint of on-line checking can be carried out to the sealing effectiveness of pipe joint.Redundant seal pipe joint of the present invention includes seal receptacle, sealed taper, edge face sealing member, radial seal and fastener, seal receptacle includes the first axial projection being made into integration, first collar flange and the first welding ends, sealed taper includes the second axial projection being made into integration, second collar flange and the second welding ends, second axial raised end face is docked with the end face of the first collar flange, edge face sealing member is located in this docking mating surface, second axial raised front end is socketed in the first collar flange, radial seal is located in the radial fit face, fastener is used for fixed even seal receptacle and sealed taper, measuring pressure passage is set on first collar flange, the air outlet of measuring pressure passage is connected with seal cap.
Description
Technical field
It is more particularly to a kind of for the loading system higher to seal request the present invention relates to a kind of pipe sealing structure
In pipe joint.
Background technology
Inflammable and explosive or toxic gas the filling system of some cryogenic loading systems such as Vehicle Fueling Station and some normal temperature
System, all higher for sealing requirements at pipe interface, in some cryogenic loading systems, cryogenic media is due to its boiling point
Temperature is relatively low so that its metal material for being contacted and nonmetallic materials easily produce larger shrinkage, in piping material low temperature
In the case of shrinkage, cause the sealing function of existing pipe sealing structure to substantially reduce and result even in seal failure；Additionally,
In the prior art, when producing leakage at the sealing structure in sealing system, using existing seal-leak detection arrangement, detection
Get up and not enough facilitate and rapid, and detection means of the prior art and the program of detection are also more complicated, it is impossible to sealing
Leakage carries out on-line checking.In addition, personnel cannot carry out or be inconvenient to carry out pipe joint close in confined space, small space
Envelope leak detection.
The content of the invention
The technical problem to be solved in the present invention be to provide a kind of simple structure, sealed reliable, easily to operate, while can
Sealing effectiveness to pipe joint carries out the redundant seal pipe joint of on-line checking.
Redundant seal pipe joint of the present invention, including seal receptacle, sealed taper, edge face sealing member, radial seal and fastening
Part, the seal receptacle includes the first axial projection, the first collar flange and the first welding ends, first axial projection, described
First collar flange and first welding ends are integrated and are made, and the sealed taper includes that the second axial projection, the second ring-type are convex
Edge and the second welding ends, second axial projection, second collar flange and second welding ends are integrated and are made, institute
Fastener is stated on first collar flange with second collar flange, the seal receptacle passes through with the sealed taper
The fastener achieves a fixed connection, and first welding ends is connected with one end of pipeline, second welding ends and pipeline
The other end is connected,
Second axial projection is divided into first step, second step, the 3rd step and the 4th step, the first step
End face docked with the outer face of first collar flange, the edge face sealing member be located at the first step and described first
In the docking mating surface of collar flange, the second step, the 3rd step and the 4th step are socketed on first ring-type
In flange and first axial projection, the radial seal is located at the footpath of the 3rd step and first collar flange
To between mating surface, closing is formed between the edge face sealing member, the radial seal, the seal receptacle and the sealed taper
Cavity,
Measuring pressure passage, the inlet end of the measuring pressure passage and the closing chamber body phase are provided with first collar flange
Connection, the outlet side of the measuring pressure passage is located on the outer peripheral face of first collar flange, the outlet side of the measuring pressure passage
Seal cap is connected with, the lower end of the seal cap is extend into the measuring pressure passage.
Redundant seal pipe joint of the present invention, wherein the first annular seal pocket is offered on the end face of the first step,
The edge face sealing member is located in first annular seal pocket.
Redundant seal pipe joint of the present invention, wherein the edge face sealing member is T-shaped sealing ring.
Redundant seal pipe joint of the present invention, wherein offering semi-spherical grooves on the outer peripheral face of the 4th step.
Redundant seal pipe joint of the present invention, wherein the right side of the radial seal and positioned at the 4th step with
The spacing back-up ring of the first radial seal is provided with the mating surface of first collar flange.
Redundant seal pipe joint of the present invention, wherein on the right side of the spacing back-up ring of the first radial seal and positioned at
The second spacing back-up ring is provided with four steps and the mating surface of first collar flange, the second spacing back-up ring is located at described
In semi-spherical grooves.
Redundant seal pipe joint of the present invention, wherein the radial seal is spring tension sealing ring.
Redundant seal pipe joint of the present invention, wherein the seal cap is to be threadedly coupled with the measuring pressure passage.
Redundant seal pipe joint difference from prior art of the present invention is redundant seal pipe joint bag of the present invention
Seal receptacle, sealed taper, edge face sealing member, radial seal and fastener are included, in the cooperation of the seal receptacle and the sealed taper
Edge face sealing member and radial seal are provided with face, due to being additionally provided with edge face sealing member, when radial seal because shrinkage
Or breakage etc. is unexpected when producing leakage, by the redundant seal of edge face sealing member act on so as to prevent due to radial seal cause it is close
Seal the problem of failure；The edge face sealing member, the radial seal, the first axial raised inner peripheral surface and described second
Axial raised outer peripheral face surrounds closed cavity, and when producing gas to leak at end face seal, the gas of leakage enters into closing
In cavity, certain air pressure is formed in closed cavity, the air pressure in closed cavity will rise, due to closed cavity and pressure measurement
Passage is connected to logical, and the gas of leakage will be entered into measuring pressure passage, and gas is flowed to by the inlet end of measuring pressure passage and surveyed
The outlet side of pressure passageway, the outlet side of measuring pressure passage is connected with seal cap, when carrying out airtight test or measuring pressure passage in pipeline
When inside having media flow, seal cap of slowly dismantling during seal cap is unscrewed, notes checking whether detection interface has gas
Spray, if by detecting that interface cannot determine whether to leak or cannot determine the effect of sealing, can be by seal cap whole
Screw down, then connect some external detection equipments, such that it is able to realize the on-line checking to the sealing property of pipe joint.This
Invention redundant seal pipe joint can be applied in ultralow temperature loading system, and some seal requests normal temperature higher is inflammable
In explosive system or toxic gas loading system, individual layer pipeline, foamed heat insulation pipeline or the huge heat pipe of vacuum multi-layer can be applied to
Joint sealing in road, whole sealing device structure is simple, highly reliable, simple to operate, it is easy to accomplish commercialization.
The spacing back-up ring of first radial seal described in redundant seal pipe joint of the present invention is used for radial seal spring
Tension force sealing ring it is spacing, the second spacing back-up ring is fixed in the semi-spherical grooves, for the first radial seal
Spacing back-up ring it is spacing, so as to form effective radial seal effect.
Redundant seal pipe joint of the invention is described further below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is the installation diagram of redundant seal pipe joint of the present invention；
Fig. 2 is the profile of redundant seal pipe joint of the present invention；
Fig. 3 is the stereogram of seal receptacle in redundant seal pipe joint of the present invention；
Fig. 4 is the front view of sealed taper in redundant seal pipe joint of the present invention.
Specific embodiment
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, redundant seal pipe joint of the present invention includes seal receptacle 1, sealed taper 2, end face
Seal 3, radial seal 4 and fastener 5, seal receptacle 1 include the first axial projection 11, the first collar flange 12 and the first weldering
End 13 is connect, the first axial projection 11, the first collar flange 12 and the first welding ends 13 are integrated and are made, sealed taper 2 includes second
Axial projection 21, the second collar flange 22 and the second welding ends 23, the second axial projection 21, the second collar flange 22 and the second weldering
Connect end 23 to be integrated and be made, fastener 5 is arranged on the first collar flange 12 and the second collar flange 22, seal receptacle 1 with seal
Cone 2 is achieved a fixed connection by fastener 5, and fastener 5 has several, and fastener 5 is matching used bolt and nut, supporting to make
The quantity of bolt and nut is eight groups, and eight groups of matching used bolt and nuts are uniformly distributed, matching used bolt and nut
Quantity can be adjusted according to the size of connecting line latus rectum, and the first welding ends 13 is connected with one end of pipeline, the second welding
End 23 is connected with the other end of pipeline,
Second 21 points of axial projection is first step 211, second step 212, the 3rd step 213 and the 4th step 214, the
The end face of one step 211 is docked with the outer face of the first collar flange 12, and the first ring-type is offered on the end face of first step 211
Seal groove 2111, edge face sealing member 3 is located in the first annular seal pocket 2111, and edge face sealing member 3 is T-shaped sealing ring.Work as sealing
Seat 1 with sealed taper 2 be attached by fastener when, T-shaped sealing ring be subject to axial compression power acted on so that with the first ring-type
The end contact of flange 12, so that effective end face seal is formed, while certain dustproof effect is also played to radial seal,
Due to condensed water that cryogenic media causes on the sagittal plane being engaged with sealed taper 2 prevented also from the seal receptacle 1 in the filling process
The ice formation issues for causing, when second step 212 is socketed in the first collar flange 12 and the first axial projection 11, radial seal
4 are located in the radial fit face of the 3rd step 213 and the first collar flange 12, and radial seal 4 is spring tension sealing ring.
First is provided with the right side of radial seal 4 and the mating surface positioned at the 4th step 214 with the first collar flange 12 radially close
The spacing back-up ring 9 of sealing.Semi-spherical grooves 2141 are offered on the outer peripheral face of the 4th step 214.In the first radial seal limiting block
Enclose 9 right side and the second spacing back-up ring 10, second are provided with the mating surface of the 4th step 214 and the first collar flange 12
Spacing back-up ring 10 is located in semi-spherical grooves 2141.
Closed cavity 8, the first collar flange are formed between edge face sealing member, radial seal, seal receptacle and sealed taper
Measuring pressure passage 6 is provided with 12, the inlet end of measuring pressure passage 6 is connected with closed cavity 8, and the outlet side of measuring pressure passage 6 is located at
On the outer peripheral face of the first collar flange 12, the outlet side of measuring pressure passage 6 offers internal thread, and measuring pressure passage 6 is connected through a screw thread
There is seal cap 7.When end face seal goes wrong causes gas to leak, the gas of leakage will be entered into closed cavity 8, envelope
Air pressure in closed chamber body 8 will rise, and because closed cavity 8 and measuring pressure passage 6 are connected to logical, the gas of leakage will enter
To in measuring pressure passage 6, gas flows to the outlet side of measuring pressure passage 6 by the inlet end of measuring pressure passage 6.
When being detected, seal cap of slowly dismantling 7 during seal cap 7 is unscrewed, notes checking measuring pressure passage 6
Outlet side whether there is gas to spray, if cannot determine whether to leak by measuring pressure passage 6 or cannot determine air-tightness
Effect, can all screw down seal cap, then the connecting detection device on measuring pressure passage 6, for example by rubber hose or its
He is attached flexible pipe with measuring pressure passage 6, and the outlet of rubber hose or other flexible pipes is placed on into certain depth in water-soluble device, is seen
Examining the mouth of pipe of flexible pipe has the generation of bubble-free, so as to realize the on-line checking to the air-tightness of pipeline；Can also be measuring pressure passage 6
Connection pressure sensor, the data of collection cause control room by cable, can remote centralized displaying each pipe joint pressure
Value size, sound and light alarm is carried out when reaching certain pressure value, so as to the performance to radial direction primary seal is monitored；Additionally, may be used also
Gas concentration detector is connected by measuring pressure passage 6, the data of collection cause control room, enter when reaching normal concentration by cable
Row sound and light alarm, can remote centralized the performance that each pipe interface is sealed is monitored, and can to Monitoring Data surf the Net realize
More long-range monitoring；Or the connecting line of measuring pressure passage 6, the pipeline of the measuring pressure passage 6 of different pipe joints is collected,
Gas to leaking concentrates discharge, treatment, it is ensured that the safety at pipe joint scene.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to model of the invention
Enclose and be defined, on the premise of design spirit of the present invention is not departed from, those of ordinary skill in the art are to technical side of the invention
Various modifications and improvement that case is made, all should fall into the protection domain of claims of the present invention determination.
Claims (5)
1. a kind of redundant seal pipe joint, it is characterised in that：Including seal receptacle (1), sealed taper (2), edge face sealing member (3),
Radial seal (4) and fastener (5), the seal receptacle (1) including the first axial projection (11), the first collar flange (12) and
First welding ends (13), first axial projection (11), first collar flange (12) and first welding ends (13)
It is integrated and is made, the sealed taper (2) includes the second axial projection (21), the second collar flange (22) and the second welding ends
(23), second axial projection (21), second collar flange (22) and second welding ends (23) are integrated and are made,
The fastener (5) on first collar flange (12) with second collar flange (22), the seal receptacle (1)
Achieved a fixed connection by the fastener (5) with the sealed taper (2), first welding ends (13) connects with one end of pipeline
Connect, second welding ends (23) is connected with the other end of pipeline,
Second axial projection (21) is divided into first step (211), second step (212), the 3rd step (213) and the 4th
Rank (214), the end face of the first step (211) is docked with the outer face of first collar flange (12), and the end face is close
Sealing (3) is docked in mating surface positioned at the first step (211) and the first collar flange (12), the second step
(212), the 3rd step (213) and the 4th step (214) are socketed on first collar flange (12) and the first axle
To in raised (11), the radial seal (4) is positioned at the footpath of the 3rd step (213) and first collar flange (12)
To between mating surface, the edge face sealing member (3), the radial seal (4), the seal receptacle (1) and the sealed taper (2)
Between formed closed cavity (8),
Measuring pressure passage (6), the inlet end of the measuring pressure passage (6) and the closing are provided with first collar flange (12)
Cavity (8) is connected, and the outlet side of the measuring pressure passage (6) is located on the outer peripheral face of first collar flange (12), described
The outlet side of measuring pressure passage (6) is connected with seal cap (7), and the lower end of the seal cap (7) extend into the measuring pressure passage (6)
It is interior,
The first annular seal pocket (2111) is offered on the end face of the first step (211), the edge face sealing member (3) is located at
In first annular seal pocket (2111),
The edge face sealing member (3) is T-shaped sealing ring, and the radial seal (4) is spring tension sealing ring,
Redundant seal pipe joint is applied to the inflammable and explosive system of ultralow temperature loading system, seal request normal temperature high or has poison gas
In body loading system, the joint sealing in individual layer pipeline, foamed heat insulation pipeline or the huge pipe line of vacuum multi-layer is also applied to.
2. redundant seal pipe joint according to claim 1, it is characterised in that：The periphery of the 4th step (214)
Semi-spherical grooves (2141) are offered on face.
3. redundant seal pipe joint according to claim 2, it is characterised in that：On the right side of the radial seal (4)
The first radial seal is provided with side and the mating surface positioned at the 4th step (214) with first collar flange (12)
Spacing back-up ring (9).
4. redundant seal pipe joint according to claim 3, it is characterised in that：It is spacing in first radial seal
The second limit is provided with the right side of back-up ring (9) and the mating surface positioned at the 4th step (214) with first collar flange (12)
Position back-up ring (10), the second spacing back-up ring (10) is in the semi-spherical grooves (2141).
5. redundant seal pipe joint according to claim 4, it is characterised in that：The seal cap (7) and the pressure measurement
Passage (6) is threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410228114.1A CN104048124B (en) | 2014-05-27 | 2014-05-27 | Redundant seal pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410228114.1A CN104048124B (en) | 2014-05-27 | 2014-05-27 | Redundant seal pipe joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104048124A CN104048124A (en) | 2014-09-17 |
| CN104048124B true CN104048124B (en) | 2017-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410228114.1A Active CN104048124B (en) | 2014-05-27 | 2014-05-27 | Redundant seal pipe joint |
Country Status (1)
| Country | Link |
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| CN (1) | CN104048124B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706226A (en) * | 2015-07-20 | 2017-05-24 | 深圳先进技术研究院 | Sealing performance detection system |
| CN106499893A (en) * | 2016-12-28 | 2017-03-15 | 核动力运行研究所 | A kind of multiple-sealed flange with leakage monitoring function |
| CN107061891A (en) * | 2017-04-14 | 2017-08-18 | 常熟市海鑫船舶机械制造有限公司 | Steam pipework connecting flange device |
| EP3508293B1 (en) | 2018-01-08 | 2020-09-30 | Flender GmbH | Housing component with microstructured flange |
| CN109466805B (en) * | 2018-11-13 | 2020-12-18 | 北京宇航***工程研究所 | Low-impact space butt joint sealing device for spacecraft |
| CN110332393B (en) * | 2019-07-03 | 2021-02-26 | 北京航天发射技术研究所 | Pipeline connector |
| CN111022645B (en) * | 2019-11-29 | 2021-10-19 | 西安航天动力研究所 | Static sealing structure suitable for high-pressure medium |
| CN112728249B (en) * | 2020-12-29 | 2023-01-13 | 中国航空工业集团公司西安飞机设计研究所 | Sleeve sealing structure |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1050699B1 (en) * | 1999-05-06 | 2005-05-25 | Borsig GmbH | Flange connection for tanks comprising at least two parts and protecting against leakage |
| DE20316372U1 (en) * | 2003-10-23 | 2003-12-18 | Fey Lamellenringe Gmbh & Co. Kg | flange |
| CN200943788Y (en) * | 2006-08-28 | 2007-09-05 | 刘星海 | Impact-resistant high temperature-resistant elastic sealing member and flange matched with same |
| CN103363221A (en) * | 2012-03-31 | 2013-10-23 | 贵州森瑞管业有限公司 | Socket pipe allowing rapid detection on water leakage of bell socket |
| CN203963319U (en) * | 2014-05-27 | 2014-11-26 | 北京航天发射技术研究所 | Redundancy sealing pipeline connector |
-
2014
- 2014-05-27 CN CN201410228114.1A patent/CN104048124B/en active Active
Also Published As
| Publication number | Publication date |
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| CN104048124A (en) | 2014-09-17 |
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