CN2096059U - Positive and negative pressure leakage detector for insulation pipe outlet - Google Patents
Positive and negative pressure leakage detector for insulation pipe outlet Download PDFInfo
- Publication number
- CN2096059U CN2096059U CN 91217589 CN91217589U CN2096059U CN 2096059 U CN2096059 U CN 2096059U CN 91217589 CN91217589 CN 91217589 CN 91217589 U CN91217589 U CN 91217589U CN 2096059 U CN2096059 U CN 2096059U
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- CN
- China
- Prior art keywords
- negative pressure
- positive
- pressure
- malleation
- type leak
- 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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- Examining Or Testing Airtightness (AREA)
Abstract
The utility model provides a positive and negative pressure leakage detector for the patching outside an insulated pipeline which adopts the method of alternating of positive pressure, and negative pressure, making disclosing solution foam to display the position with poor air tightness. The positive and negative pressure leakage detector for the patching outside an insulated pipeline comprises a vacuum pump, a positive pressure, and negative pressure converter, a connecting hose, a pressure regulator, a module, an observing body, etc; disclosing solution is also added. The utility model has the advantages of accurate detecting, high sensitivity, convenient operation, etc.
Description
The utility model is a kind of positive and negative pressure type leak locator of utilidor outlet, and it belongs to the impermeability leakage detection apparatus, is made of vacuum pump, connection flexible pipe, module, observation body etc.
The impermeability leakage detection apparatus of existing utilidor outlet is a kind of to be to adopt positive pressure leakage-detecting method, promptly inflate to repaired mouth airtight test section with forcing pump or inflator, when gaseous tension rises to the detected pressures of engineering discipline, observe the soap foaming situation that is coated on the repaired mouth outside surface, judge with this whether leakage is arranged.But because of the phenomenon of collaborating often appears in utilidor repaired mouth section, desiring to reach the detection normal pressure of regulation and stablizing certain hour wastes time and energy.Another kind is to adopt the negative pressure leak detecting, disclose a kind of portable pipe weld bond vacuum leak detector as CN2033900U and be used for leak detections such as pipe welding port, can carry out the impermeability leak detection to the connected space hole, but the impermeability leak detection of nonconductive pore is had the little situation of certain difficulty, particularly hole.Above-mentioned two kinds of methods for the utilidor repaired mouth after, promptly pack outer jacket and after inside cast foamed material and shutoff sprue, carry out impermeability again and hunt leak and just certain difficulty has been arranged.
The purpose of this utility model be to avoid the weak point of above-mentioned prior art and provide a kind of be used for utilidor repaired mouth impermeability leak detection, can detect and have a kind of easy, highly sensitive, positive and negative pressure type leak locator that accuracy the is high nonconductive pore, that can after the utilidor repaired mouth is finished, hunt leak.
The purpose of this utility model can reach by following measure.The positive and negative pressure type leak locator of utilidor repaired mouth of the present utility model is by vacuum pump (1), connects flexible pipe (3) (two), module (6) (being used for the negative pressure air flue), (9) (being used for the malleation air flue), observation body (10), vacuum pump pressure table (5), malleation tensimeter (8) formation, it is characterized in that also comprising positive and negative pressure converter (2), pressure governor (4) (being used for negative pressure regulates), (7) (being used for malleation regulates).
The purpose of this utility model can also reach by following measure.The observation body (10) of this positive and negative pressure type leak locator also is equipped with pressure tire, sealing gasket.
The optimum working range of this positive and negative pressure type leak locator is: malleation working time 10-60s, negative pressure remain on 1-10min under the pressure of 0.09-0.01MPa, observe in the working time in positive negative pressure to show the liquid foaming;
Adopt aliphatic alcohol sulfate system to show liquid in the observation body (10) of this positive and negative pressure type leak locator.
Specify below in conjunction with implementing illustration.
Fig. 1 is the assembly connection layout of the positive and negative pressure type leak locator of utilidor repaired mouth of the present utility model, among the figure:
1---vacuum pump;
2---positive and negative pressure converter;
3---connect flexible pipe;
4---pressure governor (being used for negative pressure regulates);
5---the vacuum pump pressure table;
6---module (being used for the negative pressure air flue);
7---pressure governor (being used for malleation regulates);
8---the malleation tensimeter;
9---module (being used for the malleation air flue);
10---observe body (wherein pressure tire, sealing gasket do not draw)
Above-mentioned each assembly all is loaded in the instrument box of leak locator, take out when using and observe body and be put in by the leak detection position, has the demonstration liquid of plastic jar dress in this instrument box.Observe that body is not packed in the instrument box but in the reserve tank of packing into for large volume, during leak detection with its with the instrument box in be connected the flexible pipe connection.
This positive and negative pressure type leak locator course of work is as follows: will show that at first liquid is coated on detected position, as joint coating on pipeline longitudinal joint and circumferential weld place, put and observe body (10), and the pressure tire is inflated, make the interior tested drain region of observation body reach sealing, then the positive and negative pressure converter (2) of vacuum pump (1) is forwarded to and calm the anger as (1～60s), rotating positive and negative pressure converter (2) again bleeds, regulate pressure governor (4) and reach requirement pressure, as 0.09～0.01MPa, keep 1～10min, show by observing whether liquid bubbles in the period at this section, as there is leakage at this place of explanation of bubbling.Each module position is installed in the leak locator box by (1) shown in Figure 1 → (10) order.
Embodiment 1
Adopt this positive and negative pressure type leak locator to check the impermeability of utilidor repaired mouth section.After the welding of insulation pipeline section, adopt this instrument butt welded seam to hunt leak; Pack tygon jacket outer jacket then, its tygon outer jacket with the insulation pipeline section is welded together with hot melt, carry out the leak detection of plastics weld joint air-tight for the second time; Behind repaired mouth section cast polyurethane foamed material, shutoff sprue, carry out complete for the third time repaired mouth section impermeability leak detection.In this leak detection, adopt aliphatic alcohol sulfate system to show liquid, environment temperature-20 ℃, pressure is during leak detection: air inlet 1～60s, bleeding then reaches vacuum pressure 0.09～0.01MPa, and keeps 1～10min, and test shows the optimum efficiency that above-mentioned pressure and time obtain hunting leak.
The utility model is not limited to above-mentioned leak detection, can be used for the leak detection of other nonconductive pore, also can be used for the leak detection of storage tank weld seam and heat-insulation layer impermeability.
Compared with the prior art the utility model has following advantage:
1, this instrument can be used for having the air-tightness leak detection of dead-end pore.
2, be used for the air-tightness leak detection of utilidor repaired mouth, it is simple to operate, highly sensitive, accuracy is high; And can after all finishing, the utilidor repaired mouth carry out the air-tightness leak detection.
3, the observation body of this leak detector makes its good airproof performance with pressure tire and sealing gasket, can reach pressure stability in the short time, observes so that show the foaming of liquid.
4, be furnished with in this leak detector aliphatic alcohol sulfate system show liquid, in-35 ℃ do not freeze, aobvious bubble property, foam stability be good, is convenient to observe, and also can adopt colour liquid, be convenient to observe under the strong sunlight.
Claims (4)
1, a kind of positive and negative pressure type leak locator, constitute by vacuum pump, two two modules that connect flexible pipe, are used for negative pressure air flue and malleation air flue, observation body, vacuum pump pressure table, malleation tensimeters, it is characterized in that also comprising positive and negative pressure converter, be used for two pressure governors that the malleation adjusting was regulated and be used for to negative pressure.
2, a kind of positive and negative pressure type leak locator as claimed in claim 1 is characterized in that observing body pressure tire, sealing gasket also is housed.
3, a kind of as claim 1,2 described positive and negative pressure type leak locators, it is characterized in that positive negative pressure optimal adjustment scope is: malleation working time 10～60s, negative pressure remain on 1～10mln under 0.09～0.01MPa pressure.
4, a kind of positive and negative pressure type leak locator as claimed in claim 2, it is characterized in that observing the interior used demonstration liquid of body is that aliphatic alcohol sulfate system shows liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91217589 CN2096059U (en) | 1991-07-10 | 1991-07-10 | Positive and negative pressure leakage detector for insulation pipe outlet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91217589 CN2096059U (en) | 1991-07-10 | 1991-07-10 | Positive and negative pressure leakage detector for insulation pipe outlet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2096059U true CN2096059U (en) | 1992-02-12 |
Family
ID=4925237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91217589 Withdrawn CN2096059U (en) | 1991-07-10 | 1991-07-10 | Positive and negative pressure leakage detector for insulation pipe outlet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2096059U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035132C (en) * | 1995-05-02 | 1997-06-11 | 武汉美 | Small crystal-resonance digital-display electronic weigher |
| CN104266803A (en) * | 2014-10-16 | 2015-01-07 | 歌尔声学股份有限公司 | Airtight detecting system and method |
| CN108760192A (en) * | 2018-08-28 | 2018-11-06 | 麦克传感器股份有限公司西安分公司 | A kind of portable sealed assembly detection apparatus and detection method |
-
1991
- 1991-07-10 CN CN 91217589 patent/CN2096059U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035132C (en) * | 1995-05-02 | 1997-06-11 | 武汉美 | Small crystal-resonance digital-display electronic weigher |
| CN104266803A (en) * | 2014-10-16 | 2015-01-07 | 歌尔声学股份有限公司 | Airtight detecting system and method |
| CN104266803B (en) * | 2014-10-16 | 2016-08-17 | 歌尔声学股份有限公司 | Air tightness detecting system and airtight detection method |
| CN108760192A (en) * | 2018-08-28 | 2018-11-06 | 麦克传感器股份有限公司西安分公司 | A kind of portable sealed assembly detection apparatus and detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |