CN209131912U - Leak detection device for a bleed air line connection - Google Patents
Leak detection device for a bleed air line connection Download PDFInfo
- Publication number
- CN209131912U CN209131912U CN201822112246.4U CN201822112246U CN209131912U CN 209131912 U CN209131912 U CN 209131912U CN 201822112246 U CN201822112246 U CN 201822112246U CN 209131912 U CN209131912 U CN 209131912U
- Authority
- CN
- China
- Prior art keywords
- air line
- bleed air
- pipeline
- pipe joint
- support ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 14
- 238000009413 insulation Methods 0.000 claims abstract description 42
- 230000005496 eutectics Effects 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 235000013399 edible fruits Nutrition 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model relates to a leak detection device for bleed pipeline connects. The leak detection device includes: a pair of support rings (7) with through-hole slots (9), the pair of support rings (7) being respectively mounted at the ends of one of the bleed air ducts connected by a duct joint (8); the pipeline heat insulation layer (3), the pipeline heat insulation layer (3) seals the air bleed pipeline; the clamp sleeve (4), the clamp sleeve (4) is installed on the outer side of the pipeline joint (8) and seals the support ring (7) and the pipeline joint (8); a vent hole (2) arranged on the pipeline heat insulation layer (3); and an overheat detector (1) facing the vent hole (2). The utility model discloses a leak detection device has improved the detection degree of accuracy that pipeline joint department leaked, guarantees that the gas of leaking can switch on in the air vent of pipeline insulating layer to detected by overheat detector, thereby solved the unable accurate problem of surveying and installing inconvenience of leaking of pipeline joint department effectively.
Description
Technical field
The utility model relates to a kind of leakage detector, more specifically to a kind of for bleed air line connector
Leakage detector.
Background technique
Air supply system is mainly airconditioning system, pressurization from aircraft engine and auxiliary power unit (APU) bleed
System, wing anti-ice system, engine starting system, fuel-tank inert gas system and water tank pressurization system etc. provide gas source, with full
Foot trip pressure, temperature and the flow demand of gas system.Since bleed is usually high-temperature gas, if bleed air line is let out
If leakage, can structure to aircraft or equipment damage, it is therefore necessary to avoid the generation of such leakage.
The leakage detector for being currently used in civil aircraft traditionally uses overheat detector, typically eutectic salts mistake
Thermal detector detects the leakage occurred in bleed air line.It is detected for example, Fig. 1 shows traditional eutectic salts overheat detector 1
The state of the leakage occurred in bleed air line.As shown in Figure 1, overheat detector 1 is arranged in around bleed air line, bleed air line
It is enclosed with pipeline thermal insulation layer 3, venthole 2, and the 2 face overheat detector 1 of venthole are offered on pipeline thermal insulation layer 3.Such as
If fruit bleed air line leaks, the high-temperature gas in bleed air line will be sprayed via venthole 2.Overheat detector 1 exists
The high-temperature gas for detecting ejection will issue overheat warning later, so that monitoring personnel bleed air line be reminded to be leaked.
However, finding during actual motion, pipe joint is only the component most easily leaked in bleed air line.Such as figure
Shown in 2, the figure shows the states that bleed air line leaks at pipe joint 8.Due to the gas leaked via pipe joint 8
Body can not water conservancy diversion to the venthole being provided on pipeline thermal insulation layer 3, the leakage at pipe joint 8 is likely to occur in the pipeline and connects
First 8 any direction.If only overheat detector is arranged on some direction of pipe joint 8, will occur to be located at other
The case where leakage in direction is ignored and be not detected by overheat detector.
For this purpose, those skilled in the art are seeking to detect effective way of the pipe joint leakage in bleed air line
Diameter.
Draw for example, disclosing one kind in the U.S. Utility Patent US9228496B2 submitted by Airbus SAS
Tracheae pipeline connector detection system, the system mainly include pipe joint, pipeline thermal insulation layer and overheat detector.The utility model is special
The cardinal principle of benefit is one venthole of design on the hoop sleeve of pipe joint, and the venthole has pressure holding valve.Such as
Fruit pipe joint is leaked, and leaked gas will be passed in the hoop sleeve being located at pipe joint.When in hoop sleeve
When portion's pressure is more than the pressure value of setting, pressure holding valve is opened, and leaked gas is sprayed by the venthole on hoop sleeve, thus
Realize leak detection.However, the design not only increases a variety of configurations to same connector, but also limit the established angle of connector
Degree, therefore in fact seldom apply in actual detecting strategy.
It is leaked simultaneously for this purpose, being badly in need of one kind at present and can effectively detect the bleed that bleed air line connector occurs in all directions
The leakage detector for bleed air line connector given a warning in time.
Utility model content
Bleed air line connector can be effectively detected the purpose of this utility model is to provide one kind to occur in all directions
Bleed leakage the leakage detector for bleed air line connector.
The utility model relates to a kind of leakage detectors for bleed air line connector, wherein leakage detector packet
It includes: a pair of of support ring with through-hole groove, the end of one of the bleed air line that support ring is separately mounted to be connected by pipe joint
Portion；Pipeline thermal insulation layer, pipeline thermal insulation layer seal bleed air line；Hoop sleeve, hoop sleeve are mounted on the outside of pipe joint, sealing support
Ring and the pipe joint；The venthole being provided on pipeline thermal insulation layer；And the overheat detector of face venthole.
It can be seen that hoop sleeve can be connected to through the formation of the through-hole groove in support ring with pipeline thermal insulation layer.
In a preferred embodiment, annulus lid-like can be substantially presented in support ring.On the circular ring shape top of support ring
On face, circumferentially there is at least one through-hole groove.Through-hole groove is four and is essentially homogeneously arranged in support ring and every two
With spaced arc-shaped through-hole slot between through-hole groove.
In another preferred embodiment, pipeline thermal insulation layer at least can wrap up or be formed in bleed air line and support ring
On surface.
In another preferred embodiment, hoop sleeve can have the two side portions with the outer diameter slightly larger than bleed air line,
And size can accommodate the middle section of the clip of pipe joint and fixed pipe joint.
In general, hoop sleeve can be fixedly installed on the outside of pipe joint by cassette tape.
In addition, overheat detector can be eutectic salts overheat detector.
The advantages of above-mentioned technical proposal, is:
Leakage detector according to the present utility model for bleed air line connector is in pipe joint and pipeline thermal insulation layer
Support ring on through-hole groove is set, the position that the pipe joint closes on pipeline thermal insulation layer is provided with venthole, realizes pipeline
Mutual conduction between the hoop sleeve of joint and the pipeline thermal insulation layer of surrounding.This design efficiently solves at pipe joint
Leakage accurately can not detect and install inconvenient problem.
Compared with existing design, the utility model improves the detection accuracy leaked at pipe joint, guarantees in pipeline
After connector leaks, leaked gas can be conducting in the venthole of specified pipeline thermal insulation layer, and from the venthole
It is detected after middle ejection by overheat detector.
Detailed description of the invention
In order to further illustrate the structure of the leakage detector according to the present utility model for bleed air line connector, under
Face will be described in detail the utility model in conjunction with the drawings and specific embodiments, in which:
Fig. 1 is the status diagram using traditional overheat detector detection bleed air line leakage；
Fig. 2 is the status diagram using traditional overheat detector detection bleed air line connector leakage；
Fig. 3 is the status diagram using the leakage detector detection bleed air line connector leakage of the utility model；
Fig. 4 is the perspective view of hoop sleeve；
Fig. 5 is schematic diagram of the leakage detector shown in Fig. 3 under disassembly after hoop sleeve shown in Fig. 4, the diagram
The structure inside pipe joint is gone out；
Fig. 6 A and 6B are the perspective view and front view of support ring respectively；
Fig. 7 is the cross-sectional view of the line A-A interception in Fig. 3, and wherein hoop sleeve and cassette tape have been removed.
Appended drawing reference
1 overheat detector
2 ventholes
3 pipeline thermal insulation layers
4 hoop sleeves
5 cassette tapes
6 clips
7 support rings
8 pipe joints
9 through-hole grooves
10 air entraining pipes
Specific embodiment
Illustrate the structure of the leakage detector for bleed air line connector of the utility model with reference to the accompanying drawing,
In, identical component is marked by identical appended drawing reference.
Fig. 3 shows a preferred embodiment of the leakage detector for bleed air line connector of the utility model.
It can be seen that the embodiment is linked together two bleed air lines using pipe joint 8, and pipeline is connect using clip 6
First 8 are fixed.This is well-known for those of ordinary skill in the art, and details are not described herein again.
Leakage detector for the pipe joint 8 includes:
(a) with a pair of of support ring 7 of through-hole groove 9, this is separately mounted to the bleed being connected by pipe joint 8 to support ring 7
The end of one of pipeline；
(b) pipeline thermal insulation layer 3, pipeline thermal insulation layer 3 are wrapped on the surface of bleed air line, support ring 7 and pipe joint 8,
So that bleed air line keeps sealing；
(c) hoop sleeve 4, the hoop sleeve 4 are mounted on 8 outside of pipe joint and make support ring 7 and pipe joint 8 and extraneous guarantor
Hold sealing；
(d) venthole 2 being provided on pipeline thermal insulation layer 3；And
(e) overheat detector 1 of face venthole 2.
Each component of composition leakage detector is described one by one below in conjunction with attached drawing.
Fig. 6 A and 6B are the perspective view and front view of support ring 7 respectively.It can be seen that circular ring cover is substantially presented in support ring 7
Shape structure, diameter are slightly smaller than the internal diameter of the bleed air line connected using pipe joint 8, so as to be assembled to above-mentioned draw
The end of one of air pipe.
In the case where the bleed air line connected using pipe joint 8 is had the same diameter, support ring 7 is each other
General.Certainly, if the diameter for the bleed air line that pipe joint 8 is connected is different, can also design has not
With the support ring 7 of size, to adapt to the various bleed air lines with different-diameter.
On the circular ring shape top surface of support ring 7, circumferentially there is the through-hole groove 9 of at least one arc.Shown in Fig. 6 B
Embodiment in, for support ring 7 in total equipped with four through-hole grooves 9, these through-hole grooves 9 are essentially homogeneously arranged in support ring 7
Annulus top surface on and every two through-hole grooves 9 between it is spaced apart, to guarantee the global stiffness of support ring 7.Certainly, for
It should be understood that the support ring for being provided with the through-hole groove of other quantity should also be as falling into for those skilled in the art
Within the protection scope of the utility model.
As shown in figure 3, being enclosed with pipeline thermal insulation layer 3 on the surface of bleed air line.Fig. 7 is the line A-A interception in Fig. 3
Cross-sectional view, wherein hoop sleeve and cassette tape have been removed.It can be seen that it is heat-insulated to be also enclosed with pipeline on the surface of support ring 7
Layer 3.
Refer to Fig. 5 again, although 8 wall hanging of pipe joint shown in the figure does not wrap up pipeline thermal insulation layer 3, one compared with
In good embodiment, pipeline thermal insulation layer 3 can also be enclosed on the surface of pipe joint 8.
It can be seen that pipeline thermal insulation layer 3 is at least wrapped on the surface of bleed air line and support ring 7, and optionally determine
Whether pipeline thermal insulation layer 3 is wrapped on the surface of pipe joint 8.
Pipeline thermal insulation layer 3 is made of heat-barrier material known in the art, so that bleed air line keeps sealing.Another
In one preferred embodiment, pipeline thermal insulation layer 3 can also be made either directly in the surface of bleed air line, support ring 7 and pipe joint 8
On, these modifications will be readily apparent for those of ordinary skill in the art.
Fig. 4 shows the general shape of hoop sleeve 4, it can be seen that hoop sleeve 4 has to be connect with using pipe joint 8
The compatible two side portions of bleed air line size and size be much larger than pipe joint 8 middle section.More specifically,
The size of the two side portions of hoop sleeve 4 is slightly larger than the outer diameter of bleed air line, and the size of the middle section of hoop sleeve 4 should can
Accommodate the clip 6 of pipe joint 8 and fixed pipe joint 8.In this way, hoop sleeve 4 can accommodate pipe joint 8 wherein.
Hoop sleeve 4 can be fixedly installed to the outside of pipe joint 8 using ring-band shapes clamp devices such as cassette tapes 5,
And seal support ring 7 and pipe joint 8 and extraneous holding.
As shown in figure 3, design has a ventilation on the pipeline thermal insulation layer 3 of the bleed air line near 8 side of pipe joint
Hole 2, the 2 face overheat detector 1 of venthole.
By above-mentioned arrangement, hoop sleeve 4 is only capable of through-hole groove 9 and the company of pipeline thermal insulation layer 3 in support ring 7
It is logical.In other words, the bleed leaked from pipe joint 8 only can enter pipeline thermal insulation layer 3 by hoop sleeve 4 and through-hole groove 9.
The course of work of the leakage detector for being used for bleed air line connector of the utility model will be simply introduced below.
(i) when bleed leakage occurs for pipe joint 8, the high temperature bleed leaked from some direction of pipe joint 8 is first
It diffuses in hoop sleeve 4.
(ii) since hoop sleeve is mounted on 8 outside of pipe joint and support ring 7 and pipe joint 8 is made to keep close with the external world
Envelope, the bleed of leakage can not diffuse to except hoop sleeve 4, but can only be passed to via the through-hole groove 9 being provided in support ring 7
In pipeline thermal insulation layer 3.
(iii) since pipeline thermal insulation layer 3 makes bleed air line keep sealing, the bleed being passed in pipeline thermal insulation layer 3
It can only be sprayed via the venthole 2 being provided on pipeline thermal insulation layer 3.
(iv) when the temperature around the high-temperature gas of ejection makes overheat detector 1 reaches the warning temperature of setting, overheat
Detector 1 will issue overheat warning, so that monitoring personnel bleed air line be reminded to be leaked.
This leakage detector for bleed air line connector passes through the support ring in pipe joint and pipeline thermal insulation layer
Upper setting through-hole groove, and venthole is set close to the position of pipeline thermal insulation layer in pipe joint, it realizes at pipe joint
Mutual conduction between hoop sleeve and the pipeline thermal insulation layer of surrounding.
Compared with existing design, the utility model improves the detection accuracy leaked at pipe joint, guarantees in pipeline
After connector leaks, leaked gas can be conducting in the venthole of specified pipeline thermal insulation layer, and from the venthole
It is detected after middle ejection by overheat detector, so that the leakage efficiently solved at pipe joint accurately can not detect and pacify
Fill inconvenient problem.
Although combining several preferred embodiments above to the leak detection for bleed air line connector of the utility model
The structure and advantage of device are illustrated, but those of ordinary skill in the art is it should be appreciated that above-mentioned example
It is intended merely to explanation, and cannot function as limitations of the present invention.For example, can be formed in multiple ventholes to substitute
Arc-shaped through-hole slot etc. on the circular ring shape top surface of support ring.It therefore, can be right in the spirit of claims
The utility model is modified and modification, these modifications and variations will all be fallen in required by claims of the utility model
Within the scope of.
Claims (9)
1. a kind of leakage detector for bleed air line connector, which is characterized in that the leakage detector includes:
A pair of of support ring (7) with through-hole groove (9), this to support ring (7) be separately mounted to by the pipe joint (8) be connected
The end of one of bleed air line；
Pipeline thermal insulation layer (3), the pipeline thermal insulation layer (3) seal the bleed air line；
Hoop sleeve (4), the hoop sleeve (4) are mounted on the outside of the pipe joint (8), seal the support ring (7) and described
Pipe joint (8)；
The venthole (2) being provided on the pipeline thermal insulation layer (3)；And
The overheat detector (1) of venthole described in face (2).
2. being used for the leakage detector of bleed air line connector as described in claim 1, which is characterized in that the hoop sleeve
(4) through-hole groove (9) on the support ring (7) is connected to the pipeline thermal insulation layer (3).
3. being used for the leakage detector of bleed air line connector as described in claim 1, which is characterized in that the support ring
(7) annulus lid-like is substantially presented.
4. being used for the leakage detector of bleed air line connector as claimed in claim 3, which is characterized in that in the support ring
(7) on circular ring shape top surface, circumferentially there are at least one through-hole groove (9).
5. being used for the leakage detector of bleed air line connector as claimed in claim 4, which is characterized in that the through-hole groove
(9) it is uniformly distributed on the support ring (7) and between every two through-hole grooves (9) for four with spaced arc-shaped through-hole
Slot.
6. being used for the leakage detector of bleed air line connector as described in claim 1, which is characterized in that the pipeline is heat-insulated
Layer (3) is at least wrapped up or is formed on the surface of the bleed air line and the support ring (7).
7. being used for the leakage detector of bleed air line connector as described in claim 1, which is characterized in that the hoop sleeve
(4) pipe joint (8) can be accommodated with the two side portions of the outer diameter slightly larger than the bleed air line and size and consolidate by having
The middle section of the clip (6) of the fixed pipe joint (8).
8. being used for the leakage detector of bleed air line connector as described in claim 1, which is characterized in that the hoop sleeve
(4) it is fixedly installed on the outside of the pipe joint (8) by cassette tape (5).
9. being used for the leakage detector of bleed air line connector as described in claim 1, which is characterized in that the overheat detection
Device (1) is eutectic salts overheat detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822112246.4U CN209131912U (en) | 2018-12-14 | 2018-12-14 | Leak detection device for a bleed air line connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822112246.4U CN209131912U (en) | 2018-12-14 | 2018-12-14 | Leak detection device for a bleed air line connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209131912U true CN209131912U (en) | 2019-07-19 |
Family
ID=67248858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822112246.4U Active CN209131912U (en) | 2018-12-14 | 2018-12-14 | Leak detection device for a bleed air line connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209131912U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111024331A (en) * | 2019-12-31 | 2020-04-17 | 广西玉柴机器股份有限公司 | Device and method for simulating different EGR leakage amounts |
| CN113309613A (en) * | 2021-05-25 | 2021-08-27 | 中国商用飞机有限责任公司 | Gas leakage detection piece, gas leakage detection assembly, bleed air pipeline structure and aircraft |
-
2018
- 2018-12-14 CN CN201822112246.4U patent/CN209131912U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111024331A (en) * | 2019-12-31 | 2020-04-17 | 广西玉柴机器股份有限公司 | Device and method for simulating different EGR leakage amounts |
| CN111024331B (en) * | 2019-12-31 | 2022-03-22 | 广西玉柴机器股份有限公司 | Method for simulating different EGR leakage amounts |
| CN113309613A (en) * | 2021-05-25 | 2021-08-27 | 中国商用飞机有限责任公司 | Gas leakage detection piece, gas leakage detection assembly, bleed air pipeline structure and aircraft |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209131912U (en) | Leak detection device for a bleed air line connection | |
| CN101358680B (en) | Device having heating/heat-retaining tube | |
| RU2561242C2 (en) | Coupling jacket and manifold for pipes | |
| ATE478329T1 (en) | SYSTEM FOR DETECTING LEAKS IN A PIPE AIR LINE | |
| US9389137B2 (en) | Pressurised hot air duct of an aircraft equipped with a device for detecting air leakage | |
| CN106461133A (en) | Sealing sleeve with leakage detection | |
| CN210771472U (en) | Safety protection system for buried natural gas pipeline | |
| KR101944887B1 (en) | Ball valve with built-in leak detection structure and leakage detection device for combustible fluid | |
| CN204300705U (en) | A kind of leak detection device | |
| CN103673733A (en) | Tee joint for heat exchange equipment | |
| CN113309913A (en) | Assembled clamp for drainage pipe fitting | |
| CN209247283U (en) | A kind of air-tightness detection device being applicable in different fire protection pipeline bores | |
| CN206787620U (en) | Temperature-humidity monitoring tape deck under pipe insulating layer | |
| CN212567839U (en) | Gas pipe joint leakproofness detection device | |
| CN204881869U (en) | Temperature -detecting device and air conditioner | |
| CN218628810U (en) | Washing machine drying pipe leakproofness detects structure | |
| KR101513849B1 (en) | The piping connection sealing structure | |
| CN207964206U (en) | Steam generator heat-transfer pipe leak detection device | |
| CN216345444U (en) | Valve for oil product production line with fluid density detection function | |
| CN214743616U (en) | Sealing valve with high-temperature-resistant structure for natural gas | |
| CN219890639U (en) | Indoor fire-fighting water pipe water pressure detection device | |
| CN221004747U (en) | Leakage detection device for chemical gas | |
| CN209294643U (en) | A kind of pipe joint protective device | |
| CN211855742U (en) | Oxygen making equipment internal maintenance detection device | |
| CN219263986U (en) | Oil gas warehousing and transportation detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |