CN107449565A - A kind of airtight leak-checking apparatus of multichannel - Google Patents
A kind of airtight leak-checking apparatus of multichannel Download PDFInfo
- Publication number
- CN107449565A CN107449565A CN201710686226.5A CN201710686226A CN107449565A CN 107449565 A CN107449565 A CN 107449565A CN 201710686226 A CN201710686226 A CN 201710686226A CN 107449565 A CN107449565 A CN 107449565A
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- China
- Prior art keywords
- module
- data
- single chip
- data sampling
- multichannel
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
Abstract
The invention discloses a kind of airtight leak-checking apparatus of multichannel, described device includes sensor assembly, data sampling module, single chip processing module and data communication module, sensor assembly includes one or more sense channels according to user's actual need, and the user asks as needed increases or decreases sense channel；Data sampling module is corresponded with the sensor assembly, and quantity is increased or decreased according to user's actual need；Single chip processing module is connected with data sampling module, receives the data signal that the data sampling module transmission comes, and according to the current working condition of the Digital Signal Analysis measured piece, judge whether the measured piece leaks according to the variable quantity of output signal；Data communication module includes RS485 communication modules and RS232 communication modules.Said apparatus adds sense channel, is detected while realizing multiple workpiece, while detection efficiency is improved, can ensure that each passage when working independently, is not interfere with each other.
Description
Technical field
The present invention relates to airtight detection technique field, more particularly to a kind of airtight leak-checking apparatus of multichannel.
Background technology
In recent years, development in science and technology is more and more faster, and use of some large scale equipments to various seal members is more and more common,
Also more and more higher is sought, therefore the air-leakage test problem of seal member is also particularly important, various air-leakage test instruments should
Transport and give birth to, leak detector is wherein important part.Leak detector has high sensitivity, high-resolution, easy to operate, understandable,
The characteristics of versatile, and possess powerful extension output, parameter setting selection, huge storage capacity recording storage, Communication processing, quality
The functions such as detection, data transfer, the achievable semi-automatic or full-automatic air tightness test of all test articles at different conditions, one
As can be divided into three kinds of forms：Differential pressure type airtight leak, direct pressure type airtightness leak hunting instrument and flow-type airtight leak.
Leak detector of the prior art can be divided into direct pressure type airtightness leak hunting instrument according to Cleaning Principle and differential pressure type is airtight leaks hunting
Instrument, and all detected for single channel.One significant drawbacks of above-mentioned leak detector are single channel detections, and this shows that leak detector once can only
The air-tightness of a workpiece is detected, and direct pressure type airtightness leak hunting instrument is filled with the compressed air of authorized pressure to measured object inside,
Need after treating that air pressure inside is stable, detect whether to leak according to the change of internal pressure, differential pressure type airtight leak
It is then to need to carry out pressure maintaining period with being tested end while being filled with after the compressed air of uniform pressure to normal end, sky is both present
The remaining time, detection time can be increased by once only detecting a workpiece, reduce operating efficiency, modern technologies equipment is intended to mechanization
Volume production pattern, single channel detection can hinder the normal progress of production, detection efficiency be greatly reduced, multiple leak detector equipment are entered simultaneously
Row needs constantly to change workpiece again, and volume is larger, and financial resources, material resources can be significantly increased, and improves testing cost, therefore current single-pass
Road leak detector has been difficult the high request for meeting modernization machinery production.In addition, single channel differential pressure type gas in the prior art
The tested end of close leak detector and normal end combine control with Pneumatic valve by two independent magnetic valves or magnetic valve respectively, are inflating
Stage and equilibrium stage have valve opening and close the action of valve respectively, because fine difference be present in the mechanical part of each valve body, institute
It can not ensure to open or simultaneously turn off simultaneously during acting, also can not just ensure source of the gas while reach cavity or simultaneously turn off gas
Source, very big influence is caused to the stability of gas in cavity.
The content of the invention
It is an object of the invention to provide a kind of airtight leak-checking apparatus of multichannel, the device adds sense channel, realized
Detected while multiple workpiece, while detection efficiency is improved, can ensure that each passage when working independently, is not done mutually
Disturb.
A kind of airtight leak-checking apparatus of multichannel, described device include sensor detection module, data sampling module, single-chip microcomputer
Processing module, gas circuit control module, outside input output signal module and data communication module, wherein：
The sensor detection module includes one or more sense channels according to user's actual need, the user according to
Need to increase or decrease sense channel；
The data sampling module and the sensor detection module correspond, according to user's actual need increasing or
Reduce quantity；
The single chip processing module is connected with the data sampling module, receives what the data sampling module transmission came
Data signal, and according to the current working condition of the Digital Signal Analysis measured piece, judged according to the variable quantity of output signal
Whether the measured piece occurs leakage and specific leakage rate；
The gas circuit control module includes magnetic valve and Pneumatic valve, for combining being turned on and off for control gas circuit；
The data communication module includes RS485 communication modules and RS232 communication modules；Wherein, the RS485 communications mould
Block realizes the communication of the single chip processing module and man-machine interface, and the RS232 communication modules realize the single-chip microcomputer processing
The communication of module and external equipment.
The sensor assembly includes multiple differential pressure pick-ups and a vertical compression sensor, wherein：
The vertical compression sensor is used to detect current test pressure size；
The differential pressure pick-up is used for the pressure difference value for detecting corresponding sense channel internal standard part and measured piece.
Described device also includes：
Data disaply moudle, the data disaply moudle electrically connect with the single chip processing module, in the monolithic
Machine processing module is shown after having analyzed and processed data by man-machine interface progress result.
As seen from the above technical solution provided by the invention, said apparatus adds sense channel, realizes multiple
Detected while workpiece, while detection efficiency is improved, can ensure that each passage when working independently, is not interfere with each other.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Accompanying drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill in field, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is provided the block diagram of the airtight leak-checking apparatus of multichannel by the embodiment of the present invention；
Fig. 2 is provided the structural representation of gas circuit control module by the embodiment of the present invention.
Embodiment
With reference to the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Based on this
The embodiment of invention, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to protection scope of the present invention.
The operation principle of the airtight leak-checking apparatus of multichannel is improved on the basis of single channel leak detector, with single channel
The difference of leak detector is：The airtight leak-checking apparatus of multichannel can realize two kinds of functions of single channel and multi-channel detection, each equipment
Multiple test stations are equipped with, so that user's control detects a multiple or workpiece.Below in conjunction with accompanying drawing to of the invention real
Apply example to be described in further detail, the square frame of the airtight leak-checking apparatus of multichannel is provided by the embodiment of the present invention as shown in Figure 1
Schematic diagram, described device mainly include sensor detection module, data sampling module, single chip processing module, data communication mould
Block and gas circuit control module, wherein the connection of each part and work relationship are：
The sensor detection module includes one or more sense channels according to user's actual need, the user according to
Need to require to increase or decrease sense channel；In the specific implementation, the sensor detection module includes multiple differential pressure pick-ups
(differential pressure pick-up quantity is determined by a sense channel number) and vertical compression sensor, the vertical compression sensor are used to detect current survey
Pressure testing size；The differential pressure pick-up is used for the pressure difference value for detecting corresponding sense channel internal standard part and measured piece；
The data sampling module and the sensor detection module correspond, according to user's actual need increasing or
Quantity is reduced, so as to determine the number of sense channel, realizes the airtight detection of multichannel；
The single chip processing module MCU is connected with the data sampling module, receives the data sampling module transmission
The data signal come, and according to the current working condition of the Digital Signal Analysis measured piece, according to the variable quantity of output signal come
Judge whether the measured piece occurs leakage and specific leakage rate；
The data communication module includes RS485 communication modules and RS232 communication modules；Wherein, the RS485 communications mould
Block realizes the communication of the single chip processing module MCU and man-machine interface, and the RS232 communication modules are realized at the single-chip microcomputer
Manage the communication of module MCU and external equipment.In the specific implementation, the data communication module possesses 8 input ports, 16 delivery outlets,
The single chip processing module will also analyze the input signal of outside, such as panel in addition to the data of internal sensor to be handled
Button, outside proximity switch signal etc., panel button include four beginning, pressurize, stopping, power supply buttons, facilitate user to carry out
Operation.
The gas circuit control module includes magnetic valve and Pneumatic valve, passes through solenoid valve control Pneumatic valve, combination control gas circuit
Be turned on and off；The structural representation that the embodiment of the present invention provides gas circuit control module is illustrated in figure 2, to solve closing
Die source when because the action inconsistency of Pneumatic valve influences to caused by test result, gas control valve components are set in the present invention
Meter is different from the traditional structure in existing invention, using one enter it is double go out formula, in particular to source of the gas enters all the way, two-way source of the gas is defeated
Go out, and the internal structure all same of two-way source of the gas, when turning off external air source, two gas circuits of output are mutually isolated and close simultaneously
Close, the influence caused by the otherness of mechanical part is preferably minimized.
In the specific implementation, getting out the standard items of No leakage first, leak detector is to standard items with being filled with measured object simultaneously
Gas after pressure regulation, then stopping, which is inflated, carries out pressurize, by high sensitivity differential pressure pick-up in pressure maintaining period, measures because of leakage
Differential pressure between caused pressure differential, i.e. measured object and standard items.The sensor module includes multiple differential pressure pick-ups and one
Individual vertical compression sensor, wherein：The vertical compression sensor is used to detect current test pressure size；The differential pressure pick-up is used to detect
The pressure difference value of corresponding sense channel internal standard part and measured piece.
In addition, described device also includes：
Data disaply moudle, the data disaply moudle electrically connect with the single chip processing module, in the monolithic
Machine processing module is shown after having analyzed and processed data by man-machine interface progress result.Compare for charactron, the number of display
According to more comprehensively, more completely.By detection operation curve, measured workpiece can be understood more intuitively in whole detection in user
Leakage situation in journey, after testing process terminates, user can directly by man-machine interface judge measured piece whether occur leakage with
And leakage rate how much.
In summary, the airtight leak-checking apparatus of herein described multichannel has the following advantages that：
1st, detected while realizing multiple workpiece, production detection time can be greatly shortened, improve operating efficiency；
2nd, the function of multiple single channel leak detectors can be realized, price will than the single channel leak detector cost of respective amount
It is low, it is cost-effective；
3rd, compared to for the multiple single channel leak detectors that can realize said function, the volume of the airtight leak-checking apparatus of multichannel is more
It is small.
4th, enter pair Pneumatic valve gone out using one to design, test result is more accurate.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art is in the technical scope of present disclosure, the change or replacement that can readily occur in,
It should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Enclose and be defined.
Claims (4)
1. a kind of airtight leak-checking apparatus of multichannel, it is characterised in that described device includes sensor detection module, data sampling mould
Block, single chip processing module, gas circuit control module and data communication module, wherein：
The sensor detection module includes one or more sense channels according to user's actual need, and the user is as needed
Increase or decrease sense channel；
The data sampling module corresponds with the sensor detection module, is increased or decreased according to user's actual need
Quantity；
The single chip processing module is connected with the data sampling module, receives the numeral that the data sampling module transmission comes
Signal, and according to the current working condition of the Digital Signal Analysis measured piece, judged according to the variable quantity of output signal described in
Whether measured piece occurs leakage and specific leakage rate；
The gas circuit control module includes magnetic valve and Pneumatic valve, for combining being turned on and off for control gas circuit；
The data communication module includes RS485 communication modules and RS232 communication modules；Wherein, the RS485 communication modules are real
The communication of the existing single chip processing module and man-machine interface, the RS232 communication modules realize the single chip processing module
With the communication of external equipment.
2. the airtight leak-checking apparatus of multichannel according to claim 1, it is characterised in that the sensor assembly includes multiple differences
Pressure sensor and a vertical compression sensor, wherein：
The vertical compression sensor is used to detect current test pressure size；
The differential pressure pick-up is used for the pressure difference value for detecting corresponding sense channel internal standard part and measured piece.
3. the airtight leak-checking apparatus of multichannel according to claim 1, it is characterised in that
Pneumatic valve in the gas circuit control module using one enter it is double go out formula design, specially source of the gas enters all the way, two-way source of the gas
Output, and the internal structure all same of two-way source of the gas.
4. the airtight leak-checking apparatus of multichannel according to claim 1, it is characterised in that described device also includes：
Data disaply moudle, the data disaply moudle electrically connect with the single chip processing module, at the single-chip microcomputer
Reason module analysis is shown after having handled data by man-machine interface progress result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710686226.5A CN107449565A (en) | 2017-08-11 | 2017-08-11 | A kind of airtight leak-checking apparatus of multichannel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710686226.5A CN107449565A (en) | 2017-08-11 | 2017-08-11 | A kind of airtight leak-checking apparatus of multichannel |
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| CN107449565A true CN107449565A (en) | 2017-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710686226.5A Pending CN107449565A (en) | 2017-08-11 | 2017-08-11 | A kind of airtight leak-checking apparatus of multichannel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680318A (en) * | 2018-04-04 | 2018-10-19 | 芜湖捷欧汽车部件有限公司 | A kind of water spray for automobile pot gas type detection device |
| CN109115427A (en) * | 2018-10-31 | 2019-01-01 | 天津博益气动股份有限公司 | A kind of airtight leak detector of multichannel differential pressure type and leak hunting method of common reference object |
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| CN1261956A (en) * | 1997-05-07 | 2000-08-02 | 马丁·莱曼 | Leak test installation for receptacles |
| CN1360199A (en) * | 2002-01-24 | 2002-07-24 | 天津大学 | In-line detection system for failure in gas pipeline network |
| CN1367374A (en) * | 2002-01-24 | 2002-09-04 | 天津大学 | Heat-supply network failure quick detection system |
| CN101055217A (en) * | 2007-04-16 | 2007-10-17 | 浙江大学宁波理工学院 | Automatic detection device for air-tightness of bubble-blowing raft |
| CN201188051Y (en) * | 2008-01-18 | 2009-01-28 | 北京世纪华扬能源科技有限公司 | Positioning apparatus for detecting acoustic wave leakage |
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2017
- 2017-08-11 CN CN201710686226.5A patent/CN107449565A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1261956A (en) * | 1997-05-07 | 2000-08-02 | 马丁·莱曼 | Leak test installation for receptacles |
| US6446493B1 (en) * | 1997-05-07 | 2002-09-10 | Martin Lehmann | Container tightness tester |
| CN1360199A (en) * | 2002-01-24 | 2002-07-24 | 天津大学 | In-line detection system for failure in gas pipeline network |
| CN1367374A (en) * | 2002-01-24 | 2002-09-04 | 天津大学 | Heat-supply network failure quick detection system |
| CN101055217A (en) * | 2007-04-16 | 2007-10-17 | 浙江大学宁波理工学院 | Automatic detection device for air-tightness of bubble-blowing raft |
| CN201188051Y (en) * | 2008-01-18 | 2009-01-28 | 北京世纪华扬能源科技有限公司 | Positioning apparatus for detecting acoustic wave leakage |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680318A (en) * | 2018-04-04 | 2018-10-19 | 芜湖捷欧汽车部件有限公司 | A kind of water spray for automobile pot gas type detection device |
| CN109115427A (en) * | 2018-10-31 | 2019-01-01 | 天津博益气动股份有限公司 | A kind of airtight leak detector of multichannel differential pressure type and leak hunting method of common reference object |
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Application publication date: 20171208 |