CN203115504U - Leakage warning device of sleeve inner pipeline - Google Patents
Leakage warning device of sleeve inner pipeline Download PDFInfo
- Publication number
- CN203115504U CN203115504U CN 201320060377 CN201320060377U CN203115504U CN 203115504 U CN203115504 U CN 203115504U CN 201320060377 CN201320060377 CN 201320060377 CN 201320060377 U CN201320060377 U CN 201320060377U CN 203115504 U CN203115504 U CN 203115504U
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- CN
- China
- Prior art keywords
- capillary tube
- warning device
- heat insulation
- connection set
- leakage warning
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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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Abstract
The utility model provides a leakage warning device of a sleeve inner pipeline, and relates to pipeline air impermeability detection. According to the technical scheme, the leakage warning device of the sleeve inner pipeline comprises a capillary detector and a connecting device. The connecting device is laid on the outer wall of a heat insulation sleeve. The capillary detector is connected with the connecting device in series. A capillary which is arranged at the front end of the capillary detector is inserted into an inner cavity of the heat insulation sleeve through a leakage detecting hole formed in the surface of the heat insulation sleeve, and the tail end of the connecting device is connected with an alerter through a pressure switch. A leakage detecting hole in the heat insulation sleeve does not need to be formed in oversize mode, the capillary detector can be directly inserted into the inner cavity of the heat insulation sleeve like a needle and cannot damage the heat insulation sleeve, and therefore adiathermancy is better. The leakage warning device of the sleeve inner pipeline is suitable for leakage detection of various heat insulation pipelines.
Description
Technical field
The utility model relates to the pipeline tightness and detects, and relates in particular to a kind of sleeve pipe interior conduit leakage warning device.
Background technique
As shown in Figure 1, certain type aircraft high-temperature pipe coats insulation casing, and the insulation casing material is polyether-ether-ketone, insulation casing wall thickness 0.5mm, and the air blanketing between the internal pipeline is 7mm.Insulation casing has heat insulating function; can protect high-temperature pipe neighbouring structure and other components of a system; for surveying the leakage of high-temperature pipe in the insulation casing; on every eradication thermal sleeve, all open the leak detection hole of a Ф 25mm; each 25mm place, top, leak detection hole establishes the temperature sensing point, judges that when the sensing point temperature value reaches setting value internal pipeline leaks.Find that by test the position relation of the temperature of top, leak detection hole and point for measuring temperature is very big, the position of sensor has deviation slightly, will bring the temperature departure of tens degree even tens degree, in addition, the sensing point temperature is subjected to the influence of ambient temperature also very big, so the leak detection degree of accuracy is not high.
The model utility content
The purpose of this utility model is: a kind of sleeve pipe interior conduit leakage warning device is provided, surveys accurately, and little to conduit failure.
The technical solution of the utility model is: a kind of sleeve pipe interior conduit leakage warning device comprises:
Capillary tube prober, connection set,
Connection set is layed in the insulation casing outer wall, be serially connected with the capillary tube prober on the connection set, the capillary tube of described capillary tube detector front end inserts the insulation casing inner chamber by the leak detection hole on insulation casing surface, and the connection set end connects alarm by pressure switch.
The beneficial effects of the utility model are: insulation casing need not be opened too big leak detection hole, and the capillary tube prober can not cause damage to insulation casing as the direct insertion insulation casing of pin inner chamber, makes adiabaticity better.
Description of drawings
Fig. 1 is existing insulation casing structural representation.
Fig. 2 is the whole connection diagram of the utility model sleeve pipe interior conduit leakage warning device.
Fig. 3 is the utility model capillary tube panel detector structure schematic representation.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail:
The utility model provides a kind of sleeve pipe interior conduit leakage warning device, as shown in Figure 2, comprising:
Capillary tube prober 1, connection set 2,
Further, as shown in Figure 3, capillary tube prober 1 comprises:
Termination capillary tube 4 before the detector body 5 of hollow, be fixedly connected with support 9 in the detector body 5, check valve 7 inserts detector body 5 from detector body 5 afterbodys, and support 9 is by magnet 8 and check valve 7 front end adhesives, and check valve 7 connects outside double-action mechanism 6.
Also be provided with pressure-relief valve 3 on the connection set 2.
Under the normal condition, magnet 8 adhesive check valves 7 cut out.When internal pipeline leaks, the insulation casing chamber pressure raises, air pressure reaches capillary tube prober 1, check valve 7 is backed down by air pressure, drive outside double-action mechanism 6 conversion indications simultaneously, pressure reaches pressure switch by connection set 2, and pressure switch was connected when pressure reached setting value, and alarm sends alarm signal.The personnel that patrol and examine check the state of the double-action mechanism 6 of each capillary tube prober 1 when the investigation fault, if double-action mechanism 6 conversion indications judge that then the internal pipeline of this capillary tube prober 1 region exists gas to leak.In addition, if connection set 2 internal air pressures reach certain value, gas can be discharged by pressure-relief valve 3.
The alarming value of the pressure switch that is connected with connection set 2 can be set according to actual conditions.When check valve was opened, outside double-action mechanism had indication, can accurately locate leakage point, in time found pipe leakage, can reach 100% to the leak detection degree of accuracy.In addition owing to adopt check valve, the gas of leakage can crossfire to other capillary tube prober; The pressure relief value of Decompression valves is higher than 2 times of pressure switch alarming value, and the not situation of adhesive pressure-relief valve release of pressure switch can not take place yet.
Claims (3)
1. a sleeve pipe interior conduit leakage warning device is characterized in that, comprising:
Capillary tube prober, connection set,
Connection set is layed in the insulation casing outer wall, be serially connected with the capillary tube prober on the connection set, the capillary tube of described capillary tube detector front end inserts the insulation casing inner chamber by the leak detection hole on insulation casing surface, and the connection set end connects alarm by pressure switch.
2. sleeve pipe interior conduit leakage warning device as claimed in claim 1 is characterized in that the capillary tube prober comprises:
Capillary tube, outside double-action mechanism, check valve, magnet, support, detector body;
Termination capillary tube before the detector body of hollow is fixedly connected with support in the detector body, check valve inserts detector body from the detector body afterbody, and support is by magnet and the adhesive of check valve front end, and check valve connects outside double-action mechanism.
3. sleeve pipe interior conduit leakage warning device as claimed in claim 2 is characterized in that,
Also be provided with pressure-relief valve on the connection set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320060377 CN203115504U (en) | 2013-02-01 | 2013-02-01 | Leakage warning device of sleeve inner pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320060377 CN203115504U (en) | 2013-02-01 | 2013-02-01 | Leakage warning device of sleeve inner pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203115504U true CN203115504U (en) | 2013-08-07 |
Family
ID=48895851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320060377 Expired - Lifetime CN203115504U (en) | 2013-02-01 | 2013-02-01 | Leakage warning device of sleeve inner pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203115504U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104456090A (en) * | 2014-11-13 | 2015-03-25 | 宁夏中远天宇科技有限公司 | Pressure alarming system for underground heat distribution pipeline leakage |
| 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 |
-
2013
- 2013-02-01 CN CN 201320060377 patent/CN203115504U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104456090A (en) * | 2014-11-13 | 2015-03-25 | 宁夏中远天宇科技有限公司 | Pressure alarming system for underground heat distribution pipeline leakage |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130807 |
|
| CX01 | Expiry of patent term |