CN2938055Y - Device for detecting leakage of central air-conditioning pipeline system by differential pressure - Google Patents
Device for detecting leakage of central air-conditioning pipeline system by differential pressure Download PDFInfo
- Publication number
- CN2938055Y CN2938055Y CN 200620105003 CN200620105003U CN2938055Y CN 2938055 Y CN2938055 Y CN 2938055Y CN 200620105003 CN200620105003 CN 200620105003 CN 200620105003 U CN200620105003 U CN 200620105003U CN 2938055 Y CN2938055 Y CN 2938055Y
- Authority
- CN
- China
- Prior art keywords
- valve
- central air
- input end
- air conditioner
- pressure
- 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.)
- Expired - Fee Related
Links
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model discloses a leak detection device of a central air conditioning piping system with a pressure difference method, comprising a detected parts, a standard parts, a measuring instrument for measuring the pressure difference, an intercommunicative valve and a charging valve. The measuring instrument for measuring the pressure difference is series connected between the output end of the detected parts and the output end of the standard parts. The intercommunicative valve is series connected between the input end of the detected parts and the input end of the standard parts. The input end of the detected parts or the input end of the standard parts is connected with an inflation branch, which is connected with a gas source. The charging valve is arranged on the inflation branch. The utility model adopts the leak detection device with the pressure difference method to detect the central air conditioning piping system by the following procedure: firstly, the air or the inert gas is charged into the system; the air or the inert gas charging will be stopped when a certain pressure is reached; and then the charging valve is closed; when the air or the inert gas is balanced in the system, the intercommunicative valve is closed; in this way, the pressure difference can be detected between the detected parts and the standard parts in a certain period of time. The utility model spends short time on leak detection with high efficiency and high precision, which agrees with the quality requirement of the products in system sealing and assures the reliable quality.
Description
[technical field]
The utility model includes the closed container of sealing requirements or the leak detection of system, relates in particular to airtight pipe system pressure differential method leakage detection apparatus in the central air conditioner product.
[background technology]
Leak detection in the production run of central air conditioner at present, the general mode that all adopts the total system pressurize, in closed system, charge into the air or the nitrogen of certain pressure exactly, pressurize a period of time (being generally 12 to 24 hours), working pressure table and thermometer are observed closed system pressure and variation of temperature, if meet the variation relation of temperature and pressure, the impermeability of machine set system is just qualified, otherwise be exactly defective, leakage phenomenon is just arranged.This leak hunting method is consuming time longer, generally all needs more than 12 hours, can not satisfy the mass production rhythm of central air conditioner; Because adopt artificial visually examine's temperature and pressure to change, precision is not high, and (concerning 1 cubic metre tested container, precision of detecting leak gas is generally at 0.05Pam
3About/s), be easy to generate erroneous judgement, be difficult to satisfy the requirement of product systems sealing.
[summary of the invention]
The purpose of this utility model solves the problems of the prior art exactly, proposes a kind of central air conditioner pipe system pressure differential method leakage detection apparatus, and the leak detection time is short, the precision of detecting leak gas height.
For achieving the above object, the utility model proposes a kind of central air conditioner pipe system pressure differential method leakage detection apparatus, comprise detected pieces, standard component, differential pressure measurement instrument, communicating valve and gas filling valve, the differential pressure measurement instrument of connecting between the output terminal of detected pieces and the output terminal of standard component, the communicating valve of connecting between the input end of detected pieces and the input end of standard component, be connected with the inflation branch road at the input end of detected pieces or the input end of standard component, the inflation branch road links to each other with source of the gas, and the inflation branch road is provided with gas filling valve.
As preferably, also comprise differential pressure transmitter, PLC and display, the measurement data of described differential pressure measurement instrument is sent into PLC after the differential pressure transmitter conversion, and the data after PLC will change output to display and show.
As preferably, also comprise alarm, described alarm links to each other with PLC.
As preferably, also comprise pressure measuring instrument, described pressure measuring instrument communicates with the detected pieces air pressure inside by pipeline.
As preferably, described communicating valve adopts the electromagnetism two-way valve, and described gas filling valve adopts the electromagnetism two-way valve.
As preferably, also comprise temperature sensor, described temperature sensor is arranged in the environment of detected pieces, and measurement data is sent in the PLC.
The beneficial effects of the utility model: the utility model adopts the pressure differential method leakage detection apparatus that central air conditioning pipe system is hunted leak, in system, charge into earlier air or inert gas, stop inflation after reaching certain pressure, close gas filling valve, after treating that gas reaches balance in system, close communicating valve, in the regular hour, detect the change value of pressure or the variation tendency of detected pieces and standard component, if measured piece has seepage, pressure just descends, the differential pressure measurement instrument just can detect change value of pressure, this value is sent to PLC, shows by display, alarm was reported to the police when change value of pressure surpassed setting numerical value.The utility model leak detection time only needs 10 to 30 minutes, shortens greatly more than 12 hours than existing, has satisfied the mass production rhythm of central air conditioner; Adopt the accurate measurement of instrument and show accurately that by display precision is higher, can not produce erroneous judgement; To the minor leakage in the system, also can accurately detect, meet the requirement of product systems sealing, product quality is reliably guaranteed.
Feature of the present utility model and advantage will be elaborated in conjunction with the accompanying drawings by embodiment.
[description of drawings]
Fig. 1 is the structural representation of the utility model central air conditioner pipe system pressure differential method leakage detection apparatus.
[embodiment]
Fig. 1 is the structural representation of the utility model central air conditioner pipe system pressure differential method leakage detection apparatus.Comprise detected pieces 1, standard component 2, differential pressure measurement instrument 3, communicating valve 4 and gas filling valve 5, the differential pressure measurement instrument 3 of connecting between the output terminal of the output terminal of detected pieces 1 and standard component 2, the communicating valve 4 of connecting between the input end of the input end of detected pieces 1 and standard component 2, be connected with the inflation branch road at the input end of detected pieces 1 or the input end of standard component 2, the inflation branch road links to each other with source of the gas, and tensimeter 10 is housed, the inflation branch road is provided with gas filling valve 5.Charge into air or inert gas by the inflation branch road in the system, stop inflation after reaching certain pressure, close gas filling valve 5, after treating that gas reaches balance in system, close communicating valve 4, in the regular hour, pressure differential between detected pieces 1 and the standard component 2 is presented on the differential pressure measurement instrument 3, if detected pieces 1 has seepage, even very little seepage, pressure will descend, and differential pressure measurement instrument 3 just can detect the variation of the pressure reduction between detected pieces 1 and the standard component 2, and show that prompting tester detected pieces 1 has the seepage phenomenon.The test operation of this system is very convenient, and the just variation of pressure as can be seen in a short period of time, has improved testing efficiency, and simultaneously, instrument measurement is high more a lot of than artificial visually examine's precision, makes precision of detecting leak gas be controlled at 0.008Pam
3Within/the s, not only than traditional pressurize method precision of detecting leak gas height, improved the reliability of leak detection, and shorten the leak detection time greatly.Standard component is container or the system that does not have seepage Upon Strict Inspection.
For making demonstration more directly perceived, accurately, and to operation realization controls automatically such as system's inflation, balance, detection, judgement, exhaust, demonstrations, system also is provided with differential pressure transmitter 6, PLC7, display 8 and alarm 9, the measurement data of described differential pressure measurement instrument 3 is sent into PLC7 after differential pressure transmitter 6 conversions, the data after PLC7 will change output to display 8 and show.Alarm 9 links to each other with PLC7, and alarm is then reported to the police when differential pressure measurement instrument 3 detected change value of pressure surpass setting numerical value, reminds the tester to note automatically.PLC7 is programmable controller or single-chip microcomputer.
Described communicating valve 4 adopts the electromagnetism two-way valve, and described gas filling valve 5 also adopts the electromagnetism two-way valve.
In order to make accuracy of detection and to judge the influence that is not subjected to variation of ambient temperature, with insulation material standard component 2 is completely cut off with environment and come.
In case of necessity detected pieces 1 is placed in the environment or room of temperature stabilization, to reduce the influence of temperature variation accuracy of detection.
As detected pieces 1 not being placed in the environment or room of temperature stabilization, this device also comprises temperature sensor 11, and described temperature sensor 11 is arranged in the environment of detected pieces 1, and with the temperature variation of accurate understanding detected pieces 1, measurement data is sent in the PLC7.The pressure of testing environment variation of temperature and detected pieces 1 is changed, by software or manually calculate eliminate the influence of environment temperature to system pressure after, judge the trend that detected pieces pressure changes again, and then judge whether system leaks.
In order to improve detection efficiency, as preferably, differential pressure measurement instrument 3 adopts differential pressure pickups, pressure measuring instrument 10 adopts pressure sensors, and communicating valve 4 and gas filling valve 5 adopt the electromagnetism two-way valves.This device mainly is to pass on the PLC7 again after the pressure differential with two containers converts digital signal to by differential pressure transmitter 6, after handling, again signal is delivered on the display 8, show relevant pressure difference, when data surpass the limit of setting at the appointed time, control alarm 9 is reported to the police, the prompting workpiece has leakage, if pressure reduction surpasses the limit of regulation then alarm 9 does not pipe in official hour, the sealing of representing tested unit is qualified, this device can be inflated automatically, balance, detect, judge, exhaust, operations such as demonstration, and the user can set charge pressure as required, equilibration time, detection time etc. every inspection parameter and allow discrimination standard such as detected pieces leakage rate.
The utility model is not only applicable to the leak detection of central air conditioner pipe system, is applicable to that other is any to the high closed container of sealing requirements or the leak detection of system yet.
Any structure after the utility model simple transformation is all belonged to protection domain of the present utility model.
Claims (7)
1. central air conditioner pipe system pressure differential method leakage detection apparatus, it is characterized in that: comprise detected pieces (1), standard component (2), differential pressure measurement instrument (3), communicating valve (4) and gas filling valve (5), the differential pressure measurement instrument (3) of connecting between the output terminal of detected pieces (1) and the output terminal of standard component (2), the communicating valve (4) of connecting between the input end of detected pieces (1) and the input end of standard component (2), be connected with the inflation branch road at the input end of detected pieces (1) or the input end of standard component (2), the inflation branch road links to each other with source of the gas, and the inflation branch road is provided with gas filling valve (5).
2. central air conditioner pipe system pressure differential method leakage detection apparatus as claimed in claim 1, it is characterized in that: also comprise differential pressure transmitter (6), PLC (7) and display (8), the measurement data of described differential pressure measurement instrument (3) is sent into PLC (7) after differential pressure transmitter (6) conversion, the data after PLC (7) will change output to display (8) and show.
3. central air conditioner pipe system pressure differential method leakage detection apparatus as claimed in claim 2 is characterized in that: also comprise alarm (9), described alarm (9) links to each other with PLC (7).
4. as claim 1 or 2 or 3 described central air conditioner pipe system pressure differential method leakage detection apparatus, it is characterized in that: also comprise pressure measuring instrument (10), described pressure measuring instrument (10) communicates with detected pieces (1) air pressure inside by pipeline.
5. as claim 1 or 2 or 3 described central air conditioner pipe system pressure differential method leakage detection apparatus, it is characterized in that: described communicating valve (4) adopts the electromagnetism two-way valve, and described gas filling valve (5) adopts the electromagnetism two-way valve.
6. central air conditioner pipe system pressure differential method leakage detection apparatus as claimed in claim 4 is characterized in that: described communicating valve (4) adopts the electromagnetism two-way valve, and described gas filling valve (5) adopts the electromagnetism two-way valve.
7. as claim 2 or 3 described central air conditioner pipe system pressure differential method leakage detection apparatus, it is characterized in that: also comprise temperature sensor (11), described temperature sensor (11) is arranged in the environment of detected pieces (1), and measurement data is sent in the PLC (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620105003 CN2938055Y (en) | 2006-06-22 | 2006-06-22 | Device for detecting leakage of central air-conditioning pipeline system by differential pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620105003 CN2938055Y (en) | 2006-06-22 | 2006-06-22 | Device for detecting leakage of central air-conditioning pipeline system by differential pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2938055Y true CN2938055Y (en) | 2007-08-22 |
Family
ID=38362084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620105003 Expired - Fee Related CN2938055Y (en) | 2006-06-22 | 2006-06-22 | Device for detecting leakage of central air-conditioning pipeline system by differential pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2938055Y (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825514A (en) * | 2010-05-21 | 2010-09-08 | 北京理工大学 | Flow-type leakage detection method and device thereof |
| CN102141458A (en) * | 2010-12-28 | 2011-08-03 | 唐山轨道客车有限责任公司 | Seal interface airtightness test platform for high-speed trains |
| CN102401726A (en) * | 2011-12-08 | 2012-04-04 | 芜湖泰和管业有限公司 | Air-tightness detecting device and method for corrugated pipe |
| CN101532901B (en) * | 2009-04-13 | 2012-05-30 | 苏州工业设备安装集团有限公司 | Air leakage amount testing device of clean air conditioning system |
| CN101666701B (en) * | 2009-09-07 | 2012-09-05 | 安徽省芜湖仪器仪表研究所 | Device and method for detecting air leakage rate of container |
| CN106123961A (en) * | 2016-07-12 | 2016-11-16 | 张�雄 | Water system integration combined sensor device |
| CN106323567A (en) * | 2016-08-05 | 2017-01-11 | 中山市恒辉自动化科技有限公司 | Differential pressure method part air-tightness detection device |
| CN106768648A (en) * | 2016-12-07 | 2017-05-31 | 大唐东北电力试验研究所有限公司 | Buried pipeline seepage simulation experiment system |
| CN107192506A (en) * | 2017-07-13 | 2017-09-22 | 广西玉柴机器股份有限公司 | The internal combustion engine cylinders leakage testing device of temperature-compensating can be carried out in real time |
| CN107966252A (en) * | 2017-11-16 | 2018-04-27 | 哈尔滨工业大学 | A kind of leakage amount detector of micrometeor air seal |
| CN107991037A (en) * | 2017-12-15 | 2018-05-04 | 宁波视线软件科技有限公司 | A kind of extracorporeal circulation blood circuit leak detector |
| 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 |
| CN108562411A (en) * | 2018-04-24 | 2018-09-21 | 合肥邦立电子股份有限公司 | A kind of anhydrous air-leakage detector of rigid product |
| CN109060267A (en) * | 2018-07-26 | 2018-12-21 | 珠海格力电器股份有限公司 | Leakage detection device and method for air-conditioning water system |
| CN110182707A (en) * | 2019-04-26 | 2019-08-30 | 南京航空航天大学 | A kind of Pneumatic balance crane and control method using differential pressure pickup |
| CN112179580A (en) * | 2020-09-02 | 2021-01-05 | 格力电器（武汉）有限公司 | Leak detection device and leak detection method |
| CN113483973A (en) * | 2021-06-30 | 2021-10-08 | 中国第一汽车股份有限公司 | High-precision dry-type air tightness detection device and method for engine cylinder cover |
| CN113567071A (en) * | 2021-07-26 | 2021-10-29 | 湖南正中制药机械有限公司 | Rapid vacuum leak detection system and method |
-
2006
- 2006-06-22 CN CN 200620105003 patent/CN2938055Y/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101532901B (en) * | 2009-04-13 | 2012-05-30 | 苏州工业设备安装集团有限公司 | Air leakage amount testing device of clean air conditioning system |
| CN101666701B (en) * | 2009-09-07 | 2012-09-05 | 安徽省芜湖仪器仪表研究所 | Device and method for detecting air leakage rate of container |
| CN101825514A (en) * | 2010-05-21 | 2010-09-08 | 北京理工大学 | Flow-type leakage detection method and device thereof |
| CN102141458A (en) * | 2010-12-28 | 2011-08-03 | 唐山轨道客车有限责任公司 | Seal interface airtightness test platform for high-speed trains |
| CN102401726A (en) * | 2011-12-08 | 2012-04-04 | 芜湖泰和管业有限公司 | Air-tightness detecting device and method for corrugated pipe |
| CN106123961B (en) * | 2016-07-12 | 2018-08-28 | 深圳市物有所智科技有限公司 | Water system integral combination type sensor device |
| CN106123961A (en) * | 2016-07-12 | 2016-11-16 | 张�雄 | Water system integration combined sensor device |
| CN106323567A (en) * | 2016-08-05 | 2017-01-11 | 中山市恒辉自动化科技有限公司 | Differential pressure method part air-tightness detection device |
| CN106768648A (en) * | 2016-12-07 | 2017-05-31 | 大唐东北电力试验研究所有限公司 | Buried pipeline seepage simulation experiment system |
| CN107192506A (en) * | 2017-07-13 | 2017-09-22 | 广西玉柴机器股份有限公司 | The internal combustion engine cylinders leakage testing device of temperature-compensating can be carried out in real time |
| CN107966252A (en) * | 2017-11-16 | 2018-04-27 | 哈尔滨工业大学 | A kind of leakage amount detector of micrometeor air seal |
| 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 |
| CN107991037A (en) * | 2017-12-15 | 2018-05-04 | 宁波视线软件科技有限公司 | A kind of extracorporeal circulation blood circuit leak detector |
| CN108562411A (en) * | 2018-04-24 | 2018-09-21 | 合肥邦立电子股份有限公司 | A kind of anhydrous air-leakage detector of rigid product |
| CN109060267A (en) * | 2018-07-26 | 2018-12-21 | 珠海格力电器股份有限公司 | Leakage detection device and method for air-conditioning water system |
| CN110182707A (en) * | 2019-04-26 | 2019-08-30 | 南京航空航天大学 | A kind of Pneumatic balance crane and control method using differential pressure pickup |
| CN112179580A (en) * | 2020-09-02 | 2021-01-05 | 格力电器（武汉）有限公司 | Leak detection device and leak detection method |
| CN113483973A (en) * | 2021-06-30 | 2021-10-08 | 中国第一汽车股份有限公司 | High-precision dry-type air tightness detection device and method for engine cylinder cover |
| CN113567071A (en) * | 2021-07-26 | 2021-10-29 | 湖南正中制药机械有限公司 | Rapid vacuum leak detection system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2938055Y (en) | Device for detecting leakage of central air-conditioning pipeline system by differential pressure | |
| CN204346638U (en) | A kind of pressure calibration/calibrating installation | |
| CN202033160U (en) | Air-tightness tester | |
| CN201965006U (en) | Lithium ion battery differential pressure formula leak hunting device | |
| CN102297750B (en) | Solenoid valve on-line checkingi platform | |
| EP2884252A2 (en) | Manifold assembly for a portable leak tester | |
| CN202382914U (en) | Waterproof and dust-proof lamp air tightness detecting device for LED (Light-Emitting Diode) road lamp | |
| CN201583390U (en) | Tightness tester | |
| CN103398830B (en) | A kind of grease chamber's sealing leak hunting method of load ratio bridging switch | |
| CN209166762U (en) | A kind of air-tightness detection device | |
| CN106840547A (en) | A kind of batteries of electric automobile bag air-tightness detection device and detection method | |
| CN104568308B (en) | detection device, method and system of pressure sensor | |
| CN206974611U (en) | The positive and negative two-way caliberating device of pressure sensor | |
| CN102928180A (en) | Portable automatic tester for quantitatively measuring gas tightness of aerospace military products | |
| CN109540421A (en) | Air tightness detection device and method | |
| CN110146223A (en) | Shield machine pressure sensor calibrating device and method | |
| CN102829933B (en) | Air tightness detector for photoelectric instrument | |
| KR102008889B1 (en) | Gas Meter Performance Tester | |
| CN1888843A (en) | Checking meter and testing method for air-tight tester | |
| CN114563492A (en) | Gas sensor inspection device for pipeline and test method | |
| CN104535279A (en) | Novel waterproof and dustproof level dry detection method and device | |
| CN207991747U (en) | A kind of full-automatic pressure sensor batch detection calibration console | |
| CN202814667U (en) | Photoelectric instrument gas-tightness detector | |
| CN109916568A (en) | Electric machine controller sealing propertytest system, device and method | |
| CN102692301A (en) | Air tightness detecting device for pressure regulators |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG DUNAN MECHANICAL + ELECTRICAL SCIENCE CO. Free format text: FORMER OWNER: DUNAN ARTIFICIAL ENVIRONMENTAL APPARATUS CO., LTD., ZHEJIANG PROV. Effective date: 20090508 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090508 Address after: Zhuji City, Zhejiang province shop Town Industrial Zone, zip code: 311835 Patentee after: Zhejiang Dunan Electromechanical Technology Co.,Ltd. Address before: Zhejiang City, Zhejiang Province town of Zhuji industrial security zone environmental protection equipment Limited by Share Ltd, zip code: 311835 Patentee before: Zhejiang Dun'an Artificial Environment Equipment Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070822 Termination date: 20130622 |