CN110345318A - A kind of metal hose of the double-ply bellows structure with leak hunting aperture - Google Patents
A kind of metal hose of the double-ply bellows structure with leak hunting aperture Download PDFInfo
- Publication number
- CN110345318A CN110345318A CN201910448056.6A CN201910448056A CN110345318A CN 110345318 A CN110345318 A CN 110345318A CN 201910448056 A CN201910448056 A CN 201910448056A CN 110345318 A CN110345318 A CN 110345318A
- Authority
- CN
- China
- Prior art keywords
- bellows
- metal hose
- leak hunting
- double
- hunting aperture
- 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
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
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/14—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics
- F16L11/15—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics corrugated
-
- 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
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/115—Caps
-
- 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
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
Abstract
The invention belongs to the leak detection fields of metal hose, more particularly to a kind of metal hose of double-ply bellows structure with leak hunting aperture, including bellows, metal net cover, straight tube, the bellows both ends are respectively fixed with a straight tube, the metal net cover is packaged in the periphery of bellows, and the both ends of metal net cover are separately fixed on the straight tube of corresponding side；The bellows is set as two layers, including internal layer bellows and outer layer bellows；It further include the detection device whether leaked for detecting internal layer bellows.Metal hose of the invention realizes the on-line checking whether metal hose leaks, and improves the use reliability of metal hose.
Description
Technical field
The invention belongs to the leak detection fields of metal hose, in particular relate to a kind of double-ply bellows structure with leak hunting aperture
Metal hose.
Background technique
Metal hose is mainly made of bellows, metal net cover and connector three parts, and bellows is main body, main to play sealing
Effect；Metal net cover plays a part of to reinforce and shield；Net cover and bellows are connected as one by connector, be between metal hose,
The component of metal hose and other equipment and pipe fitting, connection, structure type are mainly finished product flange, are stiffener.Because of it
There is many advantages, such as high temperature resistant, high and low temperature resistance and corrosion resistance, simple handling, be widely used to petrochemical industry, steel, aviation at present
The industrial departments such as space flight, shipbuilding.
Recently as metal hose failure case when have been reported that, bellows corrosion leakage accident occupy very high ratio
Example, but structure is complicated for metal hose, and the leak detection difficulty of internal layer bellows is very big.Currently used detection is mainly macroscopic view inspection
Pressure test is carried out after looking into or dismantling.Former approach can only visually inspect metal net cover, and observing steel wire or steel band has
Without fracture distress phenomenon, can not test to internal layer bellows detection.Later approach need to stop after in laboratory to gold
Belong to hose and carries out pressure test, after hydraulic test pressure reaches 1.5 times of design pressure, the deformation of metal hose no exceptions,
Leakage is not generated, is had no abnormal sound during test, that is, determines metal hose qualification, can continue to use, otherwise determines that the metal is soft
Pipe is unsatisfactory for pressure test needs, should stop using.
Pressure test enforcement difficulty is big, need to dismount metal hose, and working efficiency is low, costly, and petroleum chemical enterprise removes and fills at present
Dress station, which is filled, executes this method of inspection with metal hose, and most pipelines are not tested with metal hose, but are adopted
With metal hose is found in use process there are the measure for replacing metal hose when weeping immediately, it is high to do so risk,
A large amount of leakages occur for medium, and influence of the poisonous and harmful medium to staff and surrounding enviroment is very big.
Summary of the invention
According to problems of the prior art, the gold for the double-ply bellows structure with leak hunting aperture that the present invention provides a kind of
Belong to hose, realizes the on-line checking whether metal hose leaks, improve the use reliability of metal hose.
The invention adopts the following technical scheme:
A kind of metal hose of the double-ply bellows structure with leak hunting aperture, including bellows, metal net cover, straight tube, it is described
Bellows both ends are respectively fixed with a straight tube, and the metal net cover is packaged in the periphery of bellows, and the both ends of metal net cover point
It is not fixed on the straight tube of corresponding side；The bellows is set as two layers, including internal layer bellows and outer layer bellows；Further include
The detection device whether leaked for detecting internal layer bellows.
Preferably, the both ends of the bellows are respectively equipped with straight section, and the length of two straight sections is not less than ripple
The pitch of waves of pipe.
It is further preferred that solid with the straight tube of respective end positioned at the internal layer bellows and outer layer bellows with side
Fixed connection, forms a closed cavity between the internal layer bellows and outer layer bellows.
Still more preferably, the detection device includes adapter tube and plug, and the outer layer bellows is equipped with leak hunting aperture；
The one end of the adapter tube is connected in leak hunting aperture, and the plug is located at the other end of adapter tube.
Still more preferably, the adapter tube is set as hollow shape, and the cavity taken over, with internal layer bellows and outer layer wave
Cavity between line pipe is communicated as one.
Still more preferably, two outer one end of the straight tube are respectively fixed with for the flange with external connection.
Still more preferably, the both ends of the metal net cover pass through pressure ring respectively and are fixed on the straight tube of corresponding side；Institute
State between internal layer bellows and straight tube, between outer layer bellows and straight tube, between adapter tube and outer layer bellows, straight tube and flange it
Between be welded and fixed.
Still more preferably, the adapter tube and plug are all made of stainless steel material, and using cone between plug and adapter tube
Be screwed connection.
Still more preferably, the leak hunting aperture is arranged at the position of the outer layer bellows where straight section on the lower.
The beneficial effects of the present invention are:
1) metal hose of the invention be provided with include adapter tube and plug detection device, while on outer layer bellows
Leak hunting aperture is offered, the cavity between bellows inside and outside wall will take over by leak hunting aperture and be connected to, thus can be real by adapter tube
The detection of existing intermediate medium composition, and then realize the on-line checking whether bellows leaks.
2) detection of metal hose of the invention is real-time online detection, therefore at the beginning of ripple inside pipe wall leaks just
It can be found, and then be taken emergency measures in time, avoided a large amount of leakages of pumped (conveying) medium, reduce economic loss, protect
Surrounding enviroment improve the use reliability of metal hose.
3) metal hose structure setting of the invention is simple, and manufacturing cost is low, difficulty is small, has preferable practicability and warp
Ji property.
4) it is fixedly connected between the adapter tube of metal hose of the present invention and plug using taper thread, sealing effect is good, and dismantles
Simply, facilitate the access of detecting instrument.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of metal hose of the invention.
Fig. 2 is the structural schematic diagram of detection device of the invention.
Appended drawing reference: 1- bellows, 2- metal net cover, 3- straight tube, 4- detection device, 5- pressure ring, 6- flange, 11- internal layer
Bellows, 12- outer layer bellows, 13- straight section, 41- adapter tube, 42- plug, 121- leak hunting aperture.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, a kind of metal hose of the double-ply bellows structure with leak hunting aperture, including bellows 1, metal net cover
2, straight tube 3,1 both ends of bellows are respectively fixed with a straight tube 3, and the metal net cover 2 is packaged in the periphery of bellows 1, and
The both ends of metal net cover 2 are separately fixed on the straight tube 3 of corresponding side；The bellows 1 is set as two layers, including internal layer bellows
11 and outer layer bellows 12；It further include the detection device 4 whether leaked for detecting internal layer bellows 11.
The both ends of the bellows 1 are respectively equipped with straight section 13, and the length of two straight sections 13 is not less than bellows 1
The pitch of waves.
The internal layer bellows 11 and outer layer bellows 12 positioned at same side are fixedly connected with the straight tube of respective end 3,
A closed cavity is formed between the internal layer bellows 11 and outer layer bellows 12.
As shown in Fig. 2, the detection device 4 includes adapter tube 41 and plug 42, the outer layer bellows 12 is equipped with leak detection
Hole 121；The one end of the adapter tube 41 is connected in leak hunting aperture 121, and the plug 42 is located at the other end of adapter tube 41.
The adapter tube 41 is set as hollow shape, and the cavity of adapter tube 41, with internal layer bellows 11 and outer layer bellows 12 it
Between cavity be communicated as one.
Two outer one end of the straight tube 3 are respectively fixed with for the flange 6 with external connection.
It is fixed on the straight tube 3 of corresponding side specifically, the both ends of the metal net cover 2 pass through pressure ring 5 respectively；The internal layer
Between bellows 11 and straight tube 3, between outer layer bellows 12 and straight tube 3, between adapter tube 41 and outer layer bellows 12, straight tube 3 with
It is welded and fixed between flange 6.
The adapter tube 41 and plug 42 are all made of stainless steel material, and are fixed between plug 42 and adapter tube 41 using taper thread
Connection.
Specifically, the leak hunting aperture 121 is arranged at the position of the outer layer bellows 12 at 13 place of straight section on the lower.
Metal software of the invention can detect during fabrication in use to whether internal layer bellows leaks.
During fabrication, the detection process whether leaked internal layer bellows is as follows for metal hose of the invention:
First with the inner wall of dry air purging metal hose internal layer bellows 11, it is ensured that metal hose dry cleansing；
Then the blind plate of matching specification is selected to be sealed at the flange 6 at metal hose both ends, wherein on the blind plate of one end
Offer air inlet；
The inlet gas for opening the blind plate at flange 6 again, to metal hose inside be filled with helium (for the too big pipeline section of volume
In order to reduce cost, it can also be filled with the mixed gas of nitrogen and helium, mixed proportion presses N2:He=2:1), pressure (gauge pressure)
After reaching 0.1MPa；
Then helium mass spectrometer leak detector power supply is connected, carries out instrument testing according to helium mass analyzer specification, leak detection rate is set
It is set to 10-6Pa*m3/s；The plug 42 for opening leak hunting aperture 121 accesses helium mass spectrometer leak detector in adapter tube 42, is taken out using suction gun method
Take interlayer air, when detected in interlayer helium element then determine metal hose internal layer bellows exist leakage, be unsatisfactory for using
Condition should reprocess.
In use, the detection process whether leaked internal layer bellows is as follows for metal hose of the invention:
First ensure that metal hose is in running order, in the cavity between internal layer bellows 11 and outer layer bellows 12
Full of medium；
Further according to the ingredient of medium, debugging detector；
Then the plug 42 for opening leak hunting aperture 121, accesses detector, stands 5~20 minutes；
When alarm indication occurs in detector, the cavity between expression internal layer bellows 11 and outer layer bellows 12 is interior to have Jie
There is leakage, metal hose should be replaced immediately in matter, internal layer bellows 11；When detector show normally, indicate internal layer bellows 11
It does not reveal, plug should be playbacked, it is ensured that good seal, metal hose continue to use.
In conclusion the metal hose of the present invention provides a kind of double-ply bellows structure with leak hunting aperture, realizes
The on-line checking whether metal hose leaks improves the use reliability of metal hose.
Claims (9)
1. a kind of metal hose of the double-ply bellows structure with leak hunting aperture, it is characterised in that: including bellows (1), metal mesh
(2), straight tube (3) are covered, bellows (1) both ends are respectively fixed with a straight tube (3), and the metal net cover (2) is packaged in ripple
The periphery of (1) is managed, and the both ends of metal net cover (2) are separately fixed on the straight tube (3) of corresponding side；Bellows (1) setting
It is two layers, including internal layer bellows (11) and outer layer bellows (12)；It further include for detecting whether internal layer bellows (11) is let out
The detection device (4) of leakage.
2. a kind of metal hose of double-ply bellows structure with leak hunting aperture according to claim 1, it is characterised in that: institute
The both ends for stating bellows (1) are respectively equipped with straight section (13), and the length of two straight sections (13) is not less than bellows (1)
The pitch of waves.
3. a kind of metal hose of double-ply bellows structure with leak hunting aperture according to claim 2, it is characterised in that: position
It is fixedly connected with the straight tube of respective end (3) in the internal layer bellows (11) of same side and outer layer bellows (12), it is described
A closed cavity is formed between internal layer bellows (11) and outer layer bellows (12).
4. a kind of metal hose of double-ply bellows structure with leak hunting aperture according to claim 3, it is characterised in that: institute
Stating detection device (4) includes adapter tube (41) and plug (42), and the outer layer bellows (12) is equipped with leak hunting aperture (121)；It is described
The one end of adapter tube (41) is connected in leak hunting aperture (121), and the plug (42) is located at the other end of adapter tube (41).
5. a kind of metal hose of double-ply bellows structure with leak hunting aperture according to claim 4, it is characterised in that: institute
It states adapter tube (41) and is set as hollow shape, and take over the cavity of (41), between internal layer bellows (11) and outer layer bellows (12)
Cavity be communicated as one.
6. a kind of metal hose of double-ply bellows structure with leak hunting aperture according to claim 4, it is characterised in that: two
The outer one end of a straight tube (3) is respectively fixed with for the flange (6) with external connection.
7. a kind of metal hose of double-ply bellows structure with leak hunting aperture according to claim 6, it is characterised in that: institute
The both ends for stating metal net cover (2) pass through pressure ring (5) respectively and are fixed on the straight tube (3) of corresponding side；The internal layer bellows (11)
Between straight tube (3), between outer layer bellows (12) and straight tube (3), adapter tube (41) and outer layer bellows (12) between, straight tube
(3) it is welded and fixed between flange (6).
8. a kind of metal hose of double-ply bellows structure with leak hunting aperture according to claim 4, it is characterised in that: institute
It states adapter tube (41) and plug (42) is all made of stainless steel material, and connect between plug (42) and adapter tube (41) using taper thread is fixed
It connects.
9. a kind of metal hose of double-ply bellows structure with leak hunting aperture according to claim 4, it is characterised in that: institute
Leak hunting aperture (121) are stated to be arranged at the position of outer layer bellows (12) on the lower where straight section (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910448056.6A CN110345318A (en) | 2019-05-27 | 2019-05-27 | A kind of metal hose of the double-ply bellows structure with leak hunting aperture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910448056.6A CN110345318A (en) | 2019-05-27 | 2019-05-27 | A kind of metal hose of the double-ply bellows structure with leak hunting aperture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110345318A true CN110345318A (en) | 2019-10-18 |
Family
ID=68174067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910448056.6A Pending CN110345318A (en) | 2019-05-27 | 2019-05-27 | A kind of metal hose of the double-ply bellows structure with leak hunting aperture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110345318A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2718360Y (en) * | 2004-06-23 | 2005-08-17 | 南京航天晨光股份有限公司 | Antishocking metal hose |
| CN101761713A (en) * | 2010-03-09 | 2010-06-30 | 胡小强 | Wear-resisting metal composite hose |
| CN204739355U (en) * | 2015-05-11 | 2015-11-04 | 博瓦(上海)波纹管技术有限公司 | Bellows is prevented leaking in vacuum |
| CN205842078U (en) * | 2016-07-11 | 2016-12-28 | 洛阳双瑞特种装备有限公司 | A kind of interior die mould expansion joint of Novel belt leakage monitoring function |
| CN208397516U (en) * | 2018-05-07 | 2019-01-18 | 李重宏 | A kind of three-way connection of modified fuel gas conduit |
-
2019
- 2019-05-27 CN CN201910448056.6A patent/CN110345318A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2718360Y (en) * | 2004-06-23 | 2005-08-17 | 南京航天晨光股份有限公司 | Antishocking metal hose |
| CN101761713A (en) * | 2010-03-09 | 2010-06-30 | 胡小强 | Wear-resisting metal composite hose |
| CN204739355U (en) * | 2015-05-11 | 2015-11-04 | 博瓦(上海)波纹管技术有限公司 | Bellows is prevented leaking in vacuum |
| CN205842078U (en) * | 2016-07-11 | 2016-12-28 | 洛阳双瑞特种装备有限公司 | A kind of interior die mould expansion joint of Novel belt leakage monitoring function |
| CN208397516U (en) * | 2018-05-07 | 2019-01-18 | 李重宏 | A kind of three-way connection of modified fuel gas conduit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207263399U (en) | A kind of multistation valve airtight detection apparatus | |
| CN106932147A (en) | A kind of hoop type flange leakage monitor | |
| CN104807701B (en) | Pipeline pressure test technique | |
| CN104296943A (en) | Vacuum type helium detecting equipment and method thereof | |
| CN104637556B (en) | Pressurized-water reactor nuclear power plant voltage-stablizer electrical heating elements sealing structure detection method and device | |
| CN110486629A (en) | Air-tightness detection device and method for double fuel host gas pipeline | |
| CN107884008B (en) | Method for testing sealing performance of metal hose under axial tension and corrosion state | |
| CN107884138A (en) | A kind of detection method of metal hose and joint tension intensity | |
| CN107621340B (en) | A kind of metal hose Multifunction pressure tester | |
| CN110345318A (en) | A kind of metal hose of the double-ply bellows structure with leak hunting aperture | |
| CN206563637U (en) | A kind of Minitype pipe Tube-sheet Welding test specimen helium-leakage detecting apparatus | |
| DE102005008308B4 (en) | Method for leak detection on leak-proof linings of tanks and containers or the like | |
| CN207180958U (en) | The reverse pressure device of bellows safety valve | |
| CN205842078U (en) | A kind of interior die mould expansion joint of Novel belt leakage monitoring function | |
| CN203298885U (en) | Temperature-measurement and pressure-measurement data acquisition head | |
| CN106499889B (en) | A kind of safety valve pressure pilot system based on trepanning flange | |
| CN212871750U (en) | Novel trans-critical CO2Heat pump component testing device | |
| CN107631762A (en) | A kind of fuel gas transmission metal hose and joint tension intensity detection means | |
| CN107588911A (en) | Portable transformer oil conservater capsule air-leakage detector | |
| CN207539489U (en) | A kind of gas meter, flow meter pressure measurement connection flexible pipe | |
| CN212321317U (en) | Test device for pressure resistance test of underground corrosion monitoring probe | |
| CN110514433A (en) | A kind of automatic control test bed equipment detecting the full performance of valve | |
| CN217312408U (en) | Take temperature probe's metal filter case | |
| CN219416554U (en) | Pressure instrument testing device | |
| CN218511945U (en) | External pressure test device for cable sealing process |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191018 |