CN103048089A

CN103048089A - Method for measuring leakage of propylene

Info

Publication number: CN103048089A
Application number: CN2011103069081A
Authority: CN
Inventors: 陈陆荣
Original assignee: SHANGHAI LIANNAN AUTOMOBILE ACCESSORIES CO Ltd
Current assignee: SHANGHAI LIANNAN AUTOMOBILE ACCESSORIES CO Ltd
Priority date: 2011-10-12
Filing date: 2011-10-12
Publication date: 2013-04-17

Abstract

The invention provides a method for taking propylene for a commercial automatically-mounted fuel distributing pipe as a driving source, and conducting online airtight leakage amount detection by manufacturers. According to the method, the measurement is conducted through a smell sense sensor and an ATEQT520 measuring instrument by adopting the propylene as a driving source. The measuring instrument is used for determining the leakage upper limit and judging whether the qualification is achieved, the smell sense sensor is used for detecting a detected part in a sealing cover in real time. In the whole process, the leakage amount is displayed on a panel of a data collector in a manner of a two-dimensional curve so as to facilitate observation of an operator and conduct judgment on the maximum leakage amount. The testing pressure is 500KPa and adjustable; and the leakage amount standard is 0.00138Ncc/s. The equipment adopts a universal design, clamps can be changed randomly so as to detect different parts, and the test beat is 60-65 seconds per piece. The method has the advantages of being low in energy consumption, high in precision, small in noise, small in volume and pollution-free. Therefore, whether the leakage amount of the fuel pipe is qualified in working can be accurately judged, and the accuracy rate can achieve 100%.

Description

The method that a kind of propylene leaks hunting

Technical field

The present invention relates to Auto-mounting oil rail adopt third rare as test source, with the online detection field of leak-hunting principle of equipment.

Background technology

Airtight detection has polytype, with air, helium, manually, automatically, but rare as test source in the on-line automatic usefulness of manufacturing industry third, also in manufacturing industry, not promote at present, it is low that it has energy consumption, and precision is high, noise is little, little, the free of contamination advantage of volume.Therefore can judge accurately that at work whether qualified the fuel pipe leakage rate is, rate of accuracy reached to 100%.Use in addition the leak-hunting principle pressure differential method, the increasing of leakage rate erroneous judgement that precision is low to cause product.The invention provides manufacturer with rare drive source and the online method that detects airtight leakage rate done of Auto-mounting fuel distribution effective third.

Summary of the invention

The present invention uses conventional art in order to solve, and carries out airtight accuracy of detection such as the air helium not high, and the technical matters that energy consumption is high provides manufacturer with Auto-mounting fuel distribution effective third rare drive source and online method that detects airtight leakage rate done.Owing to causing as drive source that with air the situation of leakage rate erroneous judgement of product is more at work, the present invention adopts third rarely to add olfactory sensor and the ATEQT520 surveying instrument is measured as drive source.Whether qualifiedly limit the judgement of the leakage upper limit by surveying instrument, adopt olfactory sensor that tested part in the seal closure is detected in real time.In whole process, amount of leakage can be presented on the panel of data acquisition unit in the two-dimensional curve mode, and the convenient operation person observes, and judging maximum amount of leakage.Its test pressure is that 500KPa is adjustable; Amount of leakage standard 0.00138Ncc/s.Equipment is two stations designs in addition, about arrange.When work in the left side, install on the right side; When work in the right side, install on the left side; Save time with this, improve work tempo.Each station has independent elevating mechanism moving up and down, can distinguish sectional fixture.Equipment can be changed the detection that anchor clamps carry out different parts at any time originally as universal design, 60-65 seconds/part of test beat.

Description of drawings

Fig. 1 is test philosophy figure of the present invention.

Fig. 2 is work block diagram of the present invention.

Embodiment

Below with reference to drawings and Examples the utility model is further described.

1. test philosophy as shown in Figure 1: test loop process: manually measured workpiece is put into seal closure, the ATEQT520 measuring instrument is connected with third rare tracheae,---waiting time,------stable---test---exhaust---circulation finished in inflation to start knob, the circulation beginning

-use C3H6(1% concentration) carry out the gas method test;

-with special valve group, can guarantee the serviceable life more than 5,000,000 times and do not reveal;

-with special responsive olfactory sensor, can guarantee the precision and stability tested can replace within the specific limits the helium inspection;

-temporal resolution: 1/10 second (inflation, stable, test etc.);

But-show and control and measuring pressure;

-there is input/output interface to link to each other by the PLC signal, automatically control real side value;

2. critical piece is as shown in the table:

Sequence number	Title	Unit
			1	Equipment supporter (profile aluminium alloy)	Platform
2	ATEQT520	Platform
			3	Leak detection fixture	Platform
4	Tool	Only
			5	Special valve group	Only
6	Cylinder	Only
			7	Plug	Only
8	C3H6(1% concentration)	Bottle
			9	Air exhauster	Cover
10	Peripheral control electrical equipment	Cover

3. the work block diagram is as shown in Figure 2:

(1) adopt the internal expansion type structure to carry out effective shutoff

(2) the pneumatic structure operation that realizes semi-automation

(3) double detects, and enhances productivity.

Claims

1. utilize third rare airtight detection method as test source in an automobile industry, it is characterized in that: described method adopts third rarely to add olfactory sensor and the ATEQT520 surveying instrument is measured as drive source, whether qualifiedly limit the judgement of the leakage upper limit by surveying instrument, adopt olfactory sensor that tested part in the seal closure is detected in real time, in whole process, amount of leakage can be presented on the panel of data acquisition unit in the two-dimensional curve mode, the convenient operation person observes, and judging maximum amount of leakage.

2. utilize third rare airtight detection method as test source in the automobile industry according to claim 1, it is characterized in that: the test pressure of described surveying instrument is that 500KPa is adjustable; Amount of leakage standard 0.00138Ncc/s, equipment is two stations designs in addition, about arrange, during the work of the left side, install on the right side; When work in the right side, install on the left side; Save time with this, improve work tempo, each station has independent elevating mechanism moving up and down, can distinguish sectional fixture; Can change at any time the detection that anchor clamps carry out different parts, 60-65 seconds/part of test beat.

3. utilize third rare airtight detection method as test source in the automobile industry according to claim 1, it is characterized in that: test loop process: manually measured workpiece is put into seal closure, the ATEQT520 measuring instrument is connected with third rare tracheae,---waiting time,------stable---test---exhaust---circulation finished in inflation to start knob, the circulation beginning.

4. utilize third rare airtight detection method as test source in the automobile industry according to claim 3, it is characterized in that: described method of testing use C3H6(1% concentration) carry out the gas method test.