CN201138273Y - Entire carriage air tightness detecting device - Google Patents
Entire carriage air tightness detecting device Download PDFInfo
- Publication number
- CN201138273Y CN201138273Y CNU2007201885864U CN200720188586U CN201138273Y CN 201138273 Y CN201138273 Y CN 201138273Y CN U2007201885864 U CNU2007201885864 U CN U2007201885864U CN 200720188586 U CN200720188586 U CN 200720188586U CN 201138273 Y CN201138273 Y CN 201138273Y
- Authority
- CN
- China
- Prior art keywords
- pressure detector
- differential pressure
- restriction device
- velometer
- air
- 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
Images
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model relates to a tightness detecting device of a whole carriage, comprising a blower, a velometer, a throttling device, a pressure detector, a differential pressure detector and a calculation display. The blower is connected with a velometer. The air outlet of the blower is connected with the air inlet of the throttling device by a corrugated glue pneumatic hose. The air outlet of the throttling device is connected with the sealed carriage that is to be tested. The pressure detector is installed at an air passage led by the air outlet of the throttling device. The differential pressure detector is installed on the air passage led by the air inlet and air outlet of the throttling device. The pressure detector and the differential pressure detector are connected with the calculation display by a control circuit respectively. The tightness detecting device can be used to detect the leakage of the engine housing of an automobile, a car door, a glazing and a trunk where leakage easily takes place, and judge the resource and the amount of gas leakage correctly, thus effectively controlling product quality.
Description
Technical field
The utility model relates to the detection technique in the automobile engineering design, is specifically related to car load compartment sealing is detected.
Background technology
Car load compartment leak check in the past, the general quilitative method leak check state that adopts ultrasound wave and smog, these detections can only go to judge the situation of internal leakage position, compartment, lack a kind of quantitative detection means, accurately reflect the area size that the compartment overall gas is leaked, the quality of requirements of car load compartment sealing is provided for objective sedan-making plant, scientific research and testing detection department.
Summary of the invention
The purpose of this utility model is the deficiency at the prior art existence, a kind of car load carriage airtightness pick-up unit is proposed, by this pick-up unit, can detect the leakage situation of generation gas leakage position easily such as automobile engine compartment, car door, vehicle window and back case quantitatively, correct judgement gas leakage source and accurate leakage rate are controlled product quality effectively.
The technical solution of the utility model is as follows:
A kind of car load carriage airtightness pick-up unit, it comprises blower fan, velometer, restriction device, pressure detecting instrument, differential pressure detector and computing display; Described blower fan is connected with velometer, realizes regulating air quantity; Fan outlet is connected with the air inlet of restriction device by ripple glue pneumatic hose, and the air outlet of restriction device connects airtight compartment to be measured, gives compartment to be measured air-supply.Pressure detecting instrument is installed on the gas circuit of being drawn by the air outlet of restriction device, and the differential pressure detector is installed on the gas circuit of drawing into and out of the air port by restriction device, obtains detection signal; Pressure detecting instrument, differential pressure detector are connected with the computing display by operation circuit respectively, and signal is passed to the computing display, calculate corresponding equivalent leakage area by it, i.e. all leakage area sums in the car body.
During work, the blower fan by a quantity-adjustable adds air for sealed compartment envelope, and the flow of air is measured the differential pressure at its two ends by restriction device, detects static pressure in the compartment by pressure detecting instrument simultaneously.Regulate air quantity and make the pressure compartment in, and keep stable, at this moment, flow into the interior air intake of envelope and the air quantity of leakage and reached balance at a setting (150Pa).This moment is according to the differential pressure type flow measurement principle, under the railway carriage or compartment internal pressure of determining, the air mass flow that flows in the envelope is linear relationship with the aperture area that flows out envelope in certain measurement range, detect the differential pressure at restriction device two ends by the differential pressure detector, can calculate corresponding equivalent leakage area through the computing display, i.e. all leakage area sums in the car body.
The major function device of this device can be arranged in movably on the inspection vehicle, and inspection vehicle is provided with upper and lower plate, and blower fan and velometer are fixed on lower plate, and pressure detecting instrument, differential pressure detector and computing display are fixed on upper plate.
When using this device car load compartment sealing being detected, can detect the size of actual gas leakage area in the compartment, has the measuring accuracy height, measure the wide advantage of gas leakage areal extent, can accurately reflect the sealing property requirement of car load finished product compartment, control product quality effectively, production quality control is provided and improves foundation.The major function device arrangements of pick-up unit on inspection vehicle movably, can conveniently be detected.
Description of drawings
Fig. 1 car load carriage airtightness pick-up unit schematic diagram
Fig. 2 pick-up unit structural representation
Embodiment
Referring to Fig. 2, car load compartment device for detecting sealability is made up of blower fan 1, velometer 2, restriction device 3, pressure detecting instrument 4, differential pressure detector 5 and computing display 6.Described blower fan 1 is connected with velometer 2, and blower fan 1 adopts low-noise centrifugal fan, for the airtight detection in compartment provides enough air quantity, velometer 2 adopts the digital frequency conversion speed regulator, according to the demand of air quantity size, change a-c cycle and regulate the rotation speed of fan height, stably control air quantity output.Blower fan 1 air outlet is connected with the air inlet of restriction device 3 by ripple glue pneumatic hose 7, and the air outlet of restriction device 3 connects airtight compartment to be measured, and restriction device 3 is the board-like restriction device of gauge orifice, obtains the pressure restriction device of leakage flow.Pressure detecting instrument 4 is installed on the gas circuit of being drawn by the air outlet of restriction device, and differential pressure detector 5 is installed on the gas circuit of drawing into and out of the air port by restriction device, and pressure detecting instrument 4, differential pressure detector 5 are connected with computing display 6 by operation circuit respectively.Pressure detecting instrument 4 is a pressure unit, stream pressure value in the compartment is converted to 4-20mA normalized current signal, send the computing display to, read force value, differential pressure detector 5 is a differential pressure transmitter, pressure difference value before and after the pressure restriction device is converted to 4-20mA normalized current signal, sends the computing display to, read differential pressure value.Computing display 6 is little processing intelligence operation instrument, with the force value of air-flow in the compartment and the differential pressure value of restriction device, calculates the leakage area of equivalence.
Each function element of this pick-up unit is arranged in one movably on the inspection vehicle 8, and inspection vehicle 8 is provided with upper and lower plates, and lower plate 81 is centrifugal blower 1 and frequency control instrument 2 fixedly; Upper plate 82 fixation pressure detectors 4, differential pressure become detection 5 and computing display 6.With the air outlet of a termination blower fan 1 of one section ripple glue pneumatic hose 7, the air inlet of another termination restriction device 3.
Referring to Fig. 1, when implementing apparatus of the present invention car load compartment sealing is detected, the air outlet of restriction device 3 connects the window template of a size of lastblock and tested vechicle, is sealedly connected on the glass window opening in compartment to be detected.Change the control panel frequency of frequency control instrument 2, regulate the air quantity of blower fan 1 air outlet, make the pressure detecting instrument 4 in the compartment reach a setting (150Pa), and keep air mass flow stable.At this moment, flow into the interior air intake of envelope and the air quantity of leakage and reached balance, the air mass flow of leakage is measured differential pressure value by the differential pressure detector 5 at restriction device two ends, is calculated the leakage area of equivalence by computing display 6.
Claims (3)
1. car load carriage airtightness pick-up unit, it is characterized in that: it comprises blower fan, velometer, restriction device, pressure detecting instrument, differential pressure detector and computing display; Described blower fan is connected with velometer, fan outlet is connected with the air inlet of restriction device by ripple glue pneumatic hose, the air outlet of restriction device connects airtight compartment to be measured, pressure detecting instrument is installed on the gas circuit of being drawn by the air outlet of restriction device, the differential pressure detector is installed on the gas circuit of drawing into and out of the air port by restriction device, and pressure detecting instrument, differential pressure detector are connected with the computing display by operation circuit respectively.
2. car load according to claim 1 compartment device for detecting sealability, it is characterized in that: described blower fan, velometer, restriction device, pressure detecting instrument, differential pressure detector and computing display are arranged in movably on the inspection vehicle, inspection vehicle is provided with upper and lower plate, blower fan and velometer are fixed on lower plate, and pressure detecting instrument, differential pressure detector and computing display are fixed on upper plate.
3, car load according to claim 1 and 2 compartment device for detecting sealability is characterized in that: described restriction device adopts throttle orifice plate apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201885864U CN201138273Y (en) | 2007-12-19 | 2007-12-19 | Entire carriage air tightness detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201885864U CN201138273Y (en) | 2007-12-19 | 2007-12-19 | Entire carriage air tightness detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201138273Y true CN201138273Y (en) | 2008-10-22 |
Family
ID=40038957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201885864U Expired - Fee Related CN201138273Y (en) | 2007-12-19 | 2007-12-19 | Entire carriage air tightness detecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201138273Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865019A (en) * | 2015-05-11 | 2015-08-26 | 广西汽车集团有限公司 | Method for testing sealing performance of whole vehicle |
| WO2016058507A1 (en) * | 2014-10-13 | 2016-04-21 | 南车青岛四方机车车辆股份有限公司 | Device for connecting air-tight test vehicle body and air-tight test bench case |
| CN105547609A (en) * | 2015-12-08 | 2016-05-04 | 广电计量检测（武汉）有限公司 | Carriage air-tightness intelligent detection device and control method thereof |
| CN107687921A (en) * | 2017-07-07 | 2018-02-13 | 中国航空工业集团公司西安飞机设计研究所 | A kind of airtight inspection method of aircraft air-tight cabin |
-
2007
- 2007-12-19 CN CNU2007201885864U patent/CN201138273Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016058507A1 (en) * | 2014-10-13 | 2016-04-21 | 南车青岛四方机车车辆股份有限公司 | Device for connecting air-tight test vehicle body and air-tight test bench case |
| AU2015333261B2 (en) * | 2014-10-13 | 2017-02-23 | Crrc Qingdao Sifang Co., Ltd. | Device for connecting air-tight test vehicle body and air-tight test bench case |
| CN104865019A (en) * | 2015-05-11 | 2015-08-26 | 广西汽车集团有限公司 | Method for testing sealing performance of whole vehicle |
| CN105547609A (en) * | 2015-12-08 | 2016-05-04 | 广电计量检测（武汉）有限公司 | Carriage air-tightness intelligent detection device and control method thereof |
| CN107687921A (en) * | 2017-07-07 | 2018-02-13 | 中国航空工业集团公司西安飞机设计研究所 | A kind of airtight inspection method of aircraft air-tight cabin |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101256108A (en) | Device for detecting automobile carriage airtightness | |
| CN201622159U (en) | Building exterior window air tightness field detection equipment | |
| CN102749378B (en) | Vehicle mass analysis system standard device for simulating exhaust emission | |
| CN201867290U (en) | Air tightness testing device for automobile air-conditioning box | |
| CN206440441U (en) | A kind of differential pressure type air leakage tester | |
| CN201138273Y (en) | Entire carriage air tightness detecting device | |
| CN201359570Y (en) | Air volume testing device capable of changing blowing-in mode | |
| CN209910924U (en) | Check valve gas testing system | |
| CN111122407A (en) | Testing device and testing method for measuring filtering efficiency of air filtering material | |
| CN106226005A (en) | Gas meter, flow meter valve gap, seat leakage detection device | |
| CN110657982B (en) | Breather valve performance test system | |
| CN102133496A (en) | Dust filtering performance testing method and system of air filter for cab of vehicle on road | |
| CN109115454A (en) | The simulation experiment system of piping lane ventilating system safety detection | |
| CN114563492A (en) | Gas sensor inspection device for pipeline and test method | |
| CN203069340U (en) | Carbon tank performance detecting device | |
| CN202676405U (en) | Air leakage test device in automobile cabin | |
| CN112146720A (en) | Micro gas flow measuring device and method | |
| CN202814667U (en) | Photoelectric instrument gas-tightness detector | |
| CN101072990B (en) | Pressure vent, leak detection, and kinetic volume determination methods and systems | |
| CN102243130A (en) | Gas tightness detection device of high speed train | |
| CN203772506U (en) | Dynamic air tightness detection device in case of automobile road driving | |
| CN201540189U (en) | Intelligent detection equipment for civil-defence-engineering sealed door | |
| CN205879480U (en) | Gas table valve gap, valve seat seal nature detection device | |
| CN207864075U (en) | Quick differential pressure measuring device for filter | |
| CN102879037A (en) | Verifying device for gas drainage comprehensive parameter tester |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081022 Termination date: 20121219 |