CN103604572A - Leakage detection method for central air conditioner copper tube - Google Patents
Leakage detection method for central air conditioner copper tube Download PDFInfo
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- CN103604572A CN103604572A CN201310548613.4A CN201310548613A CN103604572A CN 103604572 A CN103604572 A CN 103604572A CN 201310548613 A CN201310548613 A CN 201310548613A CN 103604572 A CN103604572 A CN 103604572A
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Abstract
The invention discloses a leakage detection method for a central air conditioner copper tube. A differential pressure airtight leakage detection instrument is employed, with a detection mode of double end symmetrical counteraction, one end of a detected copper tube is connected to a detected end of the airtight leakage detection instrument, one end of a low leakage qualified copper tube is connected to the standard end of the airtight leakage detection instrument, high-pressure nitrogen or compressed air is introduced into the air inlet of the differential pressure airtight leakage detection instrument, the other end of each of the detected copper tube and the standard copper tube is sealed through a plugging head, and the detection of gas filling, pressure releasing, balancing, testing and gas discharging processes of the detected copper tube and the standard copper tube is carried out through the airtight leakage detection instrument at the same time. The method gas the advantages of simplicity, rapidness, accurate and reliable data, visibility, and good stability, a test field is clean and easy to maintain, and the disadvantages of the waste of water, high test cost and an easily dirty test field environment in the traditional water detection process can be effectively reduced.
Description
Technical field
The present invention relates to manage leakage detection method field, be specially a kind of leakage detection method of central air conditioner copper pipe.
Background technology
Development along with airtight leak locator industry, airtight leak locator is because usining air as tested media, the factor such as the low and equipment manufacturing cost of use cost is low, it is constantly expanded in the use aspect daily Leak Detection, but central air conditioner copper pipe because of volume larger, general aperture 2.2cm left and right, length 4.5m, 6m is not etc., required test pressure is 3000kPa, in high-pressure aerated process, produce the interactive variation of violent heat and pressure, copper pipe is the good conductor of heat, cause in the pressurize equilibrium process of airtight leak locator after copper pipe being stopped to inflation, overpressure variation is difficult to balance.
Summary of the invention
The leakage detection method that the object of this invention is to provide a kind of central air conditioner copper pipe, the problem existing to solve prior art.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of leakage detection method of central air conditioner copper pipe, it is characterized in that: adopt the airtight leak locator of differential pressure type, with the symmetrical detecting pattern of offsetting background of both-end, tested copper pipe one end is connected to the tested end of airtight leak locator by pipeline, will with tested copper pipe volume, profile, the qualified copper pipe of low leakage one end of state consistency is connected to the normal end of airtight leak locator by pipeline, the qualified copper pipe of described low leakage is as standard component, air intake opening access high pressure nitrogen or the air of the airtight leak locator of described differential pressure type, by the other end of the tested copper pipe of block head shutoff and standard copper pipe, then pass through airtight leak locator to tested copper pipe, standard copper pipe is inflated simultaneously successively, pressure release, balance, test, the detection of deflation course, wherein in gas replenishment process, by adjusting leak locator test pressure and inflationtime, airtight leak locator is overcharged to tested copper pipe and standard copper pipe, make tested copper pipe and standard copper pipe internal pressure value be greater than test pressure value, in pressure leak process to the Rapid degassing pressure release simultaneously of tested copper pipe and standard copper pipe, make tested copper pipe and standard copper pipe internal pressure value drop to test pressure value.
The leakage detection method of described a kind of central air conditioner copper pipe, is characterized in that: described test pressure value is 3000kPa, during inflation, to overcharging in tested copper pipe and standard copper pipe, makes tested copper pipe and standard copper overpressure value reach 3300kPa.
The leakage detection method of described a kind of central air conditioner copper pipe, is characterized in that: the described pressure leak process time is controlled at 0.2s.
The present invention proposes a kind of leakage detection method of air-conditioning copper pipe, the airtight leak locator of differential pressure type can be applied to the Leak Detection of large volume air-conditioning copper pipe and similar products industry by this method, its expanded the application of the airtight leak locator of differential pressure type and make the Leak Detection of central air conditioner copper pipe convenient, directly perceived, quick, reliable and stable, and can effectively reduce the cost of Leak Detection.
The present invention compares with the leakage detection method of the traditional air-conditioning copper pipe of tradition, the present invention is easy, quick, data accurately and reliably, intuitively, good stability, test site cleans easy care, can effectively reduce easily dirty present situation of the high and test site environment of water resource waste, the testing cost of copper pipe in traditional water inspection process.
Accompanying drawing explanation
Fig. 1 is the airtight leak locator work of the present invention schematic diagram.
Embodiment
As shown in Figure 1.A kind of leakage detection method of central air conditioner copper pipe, adopt the airtight leak locator of differential pressure type, with the symmetrical detecting pattern of offsetting background of both-end, tested copper pipe one end is connected to the tested end of airtight leak locator by pipeline, will with tested copper pipe volume, profile, the qualified copper pipe of low leakage one end of state consistency is connected to the normal end of airtight leak locator by pipeline, the qualified copper pipe of described low leakage is as standard component, air intake opening access high pressure nitrogen or the air of the airtight leak locator of described differential pressure type, by the other end of the tested copper pipe of block head shutoff and standard copper pipe, then by airtight leak locator, tested copper pipe and standard copper pipe are inflated simultaneously successively, pressure release, balance, test, the detection of deflation course, wherein in gas replenishment process, by airtight leak locator, tested copper pipe and standard copper pipe are overcharged, make tested copper pipe and standard copper overpressure value be greater than test pressure value, in pressure leak process to the Rapid degassing pressure release simultaneously of tested copper pipe and standard copper pipe, make tested copper pipe and standard copper overpressure value drop to test pressure value.
The test pressure value of central air conditioner copper pipe is 3000kPa, during inflation, by regulating leak locator admission pressure and inflationtime to make to overcharge to tested copper pipe and standard copper pipe, makes tested copper pipe and standard copper overpressure value reach 3300kPa.The pressure leak process time is controlled at 0.2s.
As shown in Figure 1, machine system of the present invention is mainly comprised of the airtight leak locator 1 of differential pressure type, high-pressure nylon pipe 2, copper pipe positioning plugging mechanism 3, wherein the block head in copper pipe positioning plugging mechanism 3 is driven and is compressed by cylinder, and cylinder action is controlled by airtight leak locator 1.Copper pipe positioning plugging mechanism 3 connects airtight leak locator 1 normal end and tested end by high-pressure nylon pipe 2, airtight leak locator air intake opening is connected to high pressure nitrogen or compressed air gas source, the airtight leak locator used medium of differential pressure type is only air pressure or nitrogen pressure resource, can be inexhaustible.Two copper pipe 4-1,4-2 are positioned over respectively in copper pipe positioning plugging mechanism 3, when starting airtight leak locator 1 and carrying out leak-testing, thereby airtight leak locator 1 drives the airtight plug that fills to tested copper pipe 4-1 end face automatic plugging cylinder action in control copper pipe positioning plugging mechanism 3, then 1 couple of tested copper pipe 4-1 of airtight leak locator realizes inflation, pressure release, balance, test, venting, unloading clip, wherein unloading clip is that cylinder drives block head to reset, and realizes compressing and unclamps action.
The present invention uses the airtight leak locator of differential pressure type, and with the symmetrical test pattern of offsetting background of both-end, to as standard component, be connected to airtight leak locator normal end with the basically identical qualified copper pipe of low leakage of tested copper pipe volume, profile, state, so that in the test process of cancelling each other, copper pipe internal temperature that high pressure nitrogen or pressurized air causes and pressure are interactive changes the impact bringing because being filled with.In test process, two copper pipes are because being filled with after pressure-air or nitrogen, and the variation of internal pressure can be cancelled each other, and in test process, airtight leak locator, to after tested copper pipe inflation, can effectively shorten test balance required time by quick pressure releasing.
Simultaneously the present invention by the airtight leak locator testing process of traditional differential pressure type by inflating, balance, test, venting be revised as inflation, pressure release, balance, test, venting.In gas replenishment process, specially allow airtight leak locator overcharge tested copper pipe, make to manage build-in test pressure and be greater than test pressure 3000kPa, be under the interior actual 3300kPa of the pouring pressure of copper pipe, then venting, copper pipe internal pressure, by moment fast-descending, need guarantee that pressure release is complete, quick pressure releasing, to accelerate the balance of large volume, the rear internal pressure of long copper pipe inflation, is effectively controlled in 30s the required test beat of the common test of two copper pipes.It is the requirement of 3000kPa that tested copper pipe and standard copper pipe internal pressure meet test pressure, and by experiment, pressure release required time can be set to 0.2s.
Claims (3)
1. the leakage detection method of a central air conditioner copper pipe, it is characterized in that: adopt the airtight leak locator of differential pressure type, with the symmetrical detecting pattern of offsetting background of both-end, tested copper pipe one end is connected to the tested end of airtight leak locator by pipeline, the qualified copper pipe of low leakage one end with tested copper pipe volume, profile, state consistency is connected to the normal end of airtight leak locator by pipeline, the qualified copper pipe of described low leakage is as standard component, and the air intake opening of the airtight leak locator of described differential pressure type accesses high pressure nitrogen or air; Then by airtight leak locator simultaneously to tested copper pipe, standard copper pipe inflate successively, the detection of pressure release, balance, test, deflation course, wherein in gas replenishment process, make airtight leak locator overcharge tested copper pipe and standard copper pipe simultaneously, make tested copper pipe and standard copper pipe internal pressure value be greater than test pressure value, in pressure leak process, simultaneously to tested copper pipe and the pressure release of standard copper pipe Rapid degassing, make tested copper pipe and standard copper pipe internal pressure value drop to test pressure value.
2. the leakage detection method of a kind of central air conditioner copper pipe according to claim 1, is characterized in that: described test pressure value is 3000kPa, during inflation, in tested copper pipe and standard copper pipe, is excessively charged to 3300kPa.
3. the leakage detection method of a kind of central air conditioner copper pipe according to claim 1, is characterized in that: the described pressure leak process time is controlled at 0.2s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310548613.4A CN103604572A (en) | 2013-11-06 | 2013-11-06 | Leakage detection method for central air conditioner copper tube |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310548613.4A CN103604572A (en) | 2013-11-06 | 2013-11-06 | Leakage detection method for central air conditioner copper tube |
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| CN103604572A true CN103604572A (en) | 2014-02-26 |
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| CN201310548613.4A Pending CN103604572A (en) | 2013-11-06 | 2013-11-06 | Leakage detection method for central air conditioner copper tube |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441733A (en) * | 2016-09-20 | 2017-02-22 | 深圳市燕麦科技股份有限公司 | Airtightness testing device |
| CN106524597A (en) * | 2016-10-16 | 2017-03-22 | 合肥太通制冷科技有限公司 | Pressure maintaining method for filament pipe evaporator |
| CN108072499A (en) * | 2017-11-24 | 2018-05-25 | 重庆赛格尔汽车配件有限公司 | A kind of bilayer air-conditioner pipe air tightness detection system and method |
| CN109000860A (en) * | 2018-08-28 | 2018-12-14 | 珠海格力电器股份有限公司 | Water system leakage detection device and method |
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| JPH07181101A (en) * | 1993-12-22 | 1995-07-21 | Toyoda Gosei Co Ltd | Leak quantity detector |
| JP3143299B2 (en) * | 1993-12-13 | 2001-03-07 | 太陽鉄工株式会社 | How to measure gas leaks from containers |
| CN201532292U (en) * | 2009-09-11 | 2010-07-21 | 彭光正 | Pneumatic circuit of multifunctional gas-tightness detector |
| CN102141460A (en) * | 2011-02-17 | 2011-08-03 | 大连三高集团有限公司 | Airtightness test machine for titanium welded pipes |
| CN102539089A (en) * | 2011-12-26 | 2012-07-04 | 大连三高科技发展有限公司 | Air tightness detection device and detection method thereof |
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2013
- 2013-11-06 CN CN201310548613.4A patent/CN103604572A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3143299B2 (en) * | 1993-12-13 | 2001-03-07 | 太陽鉄工株式会社 | How to measure gas leaks from containers |
| JPH07181101A (en) * | 1993-12-22 | 1995-07-21 | Toyoda Gosei Co Ltd | Leak quantity detector |
| CN201532292U (en) * | 2009-09-11 | 2010-07-21 | 彭光正 | Pneumatic circuit of multifunctional gas-tightness detector |
| CN102141460A (en) * | 2011-02-17 | 2011-08-03 | 大连三高集团有限公司 | Airtightness test machine for titanium welded pipes |
| CN102539089A (en) * | 2011-12-26 | 2012-07-04 | 大连三高科技发展有限公司 | Air tightness detection device and detection method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441733A (en) * | 2016-09-20 | 2017-02-22 | 深圳市燕麦科技股份有限公司 | Airtightness testing device |
| CN106524597A (en) * | 2016-10-16 | 2017-03-22 | 合肥太通制冷科技有限公司 | Pressure maintaining method for filament pipe evaporator |
| CN108072499A (en) * | 2017-11-24 | 2018-05-25 | 重庆赛格尔汽车配件有限公司 | A kind of bilayer air-conditioner pipe air tightness detection system and method |
| CN109000860A (en) * | 2018-08-28 | 2018-12-14 | 珠海格力电器股份有限公司 | Water system leakage detection device and method |
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Application publication date: 20140226 |
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