CN105181279B - A kind of air-tightness detection device - Google Patents
A kind of air-tightness detection device Download PDFInfo
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- CN105181279B CN105181279B CN201510631935.4A CN201510631935A CN105181279B CN 105181279 B CN105181279 B CN 105181279B CN 201510631935 A CN201510631935 A CN 201510631935A CN 105181279 B CN105181279 B CN 105181279B
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Abstract
The invention discloses a kind of air-tightness detection device, including：Detection device ontology and the warning device being connect with the detection device ontology, the detection device ontology include cavity portion, adsorption section and the resistance bar of sealing；The adsorption section is set to one end of the cavity portion and is connected with the cavity portion, and the cavity portion passes through the adsorption section airtight connection article to be detected；The resistance bar is set in the cavity portion and is connect with the warning device, and the resistance pole-footing exports different resistance values according to the air-tightness difference of article to be detected；The warning device sends out different alarm songs according to the different resistance values for detecting the resistance bar, provides the prompting of the air-tightness quality of article to be detected.The present invention, cost is relatively low, easy to operate, and time of measuring is short, the pipelining operation being suitble on production line.
Description
Technical field
The present invention relates to quality testing field, more particularly to a kind of air-tightness detection device.
Background technology
Product is required for carrying out quality testing before manufacture, general to use for needing the product of progress air-leakage test
Air-leakage detector is detected.However although existing air-leakage detector has accurate detection result, has detection
The shortcomings that period is long, cumbersome, the pipelining operation being not suitable on production line.
Invention content
In view of existing air-leakage detector there are detection cycle it is long, cumbersome the problem of, it is proposed that gas of the invention
Close property detection device.
Air-tightness detection device provided by the invention, including：It detection device ontology and connect with the detection device ontology
Warning device, the detection device ontology include cavity portion, adsorption section and the resistance bar of sealing；The adsorption section is set to described
One end of cavity portion is simultaneously connected with the cavity portion, and the cavity portion passes through the adsorption section airtight connection article to be detected；Institute
It states resistance bar to be set in the detection device ontology and connect with the warning device, the resistance pole-footing is according to article to be detected
Air-tightness difference export different resistance value；The warning device is sent out according to the different resistance values for detecting the resistance bar
Different alarm songs provide the prompting of the air-tightness quality of article to be detected.
Optionally, the resistance bar is set on the side wall of the cavity portion and as one of the cavity portion side wall
Point.
Optionally, the detection device ontology further includes piston and probe；
The piston is inserted into the cavity portion and can be moved in the cavity portion；The probe is set to the work
Connect beyond the Great Wall and with the warning device, the probe it is mobile with the piston and with the resistance bar slidable connection, so as to
Different resistance values is exported to the warning device.
Optionally, the detection device ontology further includes push-pull rod, and the push-pull rod is fixedly installed on the piston and is inserted into
Outer end side after the cavity portion, for moving the piston to piston force.
Optionally, the detection device ontology further includes resetting spring, and the resetting spring is set in the cavity portion,
One end that the cavity portion connects the adsorption section is fixed in one end, and the other end is fixedly connected with the piston, for detecting
After by the piston reset to initial position.
Optionally, the adsorption section can be replaced according to the difference of article to be detected.
Optionally, the warning device includes：Partial pressure unit, detecting control unit and alarm unit；The partial pressure unit
Including slide rheostat, the slide rheostat is electrically connected with the resistance bar；The input terminal connection of the detecting control unit
Between the slide rheostat and the resistance bar, for detecting the potential change of the slide rheostat, the detecting control
The output terminal of unit processed is connect with the alarm unit, for according to the control of the potential change of the slide rheostat detected
The alarm unit sends out corresponding alarm.
Optionally, the partial pressure unit further includes：First capacitance, first capacitance is connect between power end and ground, described
The sliding end of slide rheostat is connected between first capacitance and the power end.
Optionally, the detecting control unit, including：3rd resistor, the 4th resistance and MCU chip；The 3rd resistor
It connects with the 4th resistance, the first pin of the MCU chip is connected between the 3rd resistor and the 4th resistance,
Second pin of the MCU chip is connected between the slide rheostat and the resistance bar, the third pipe of the MCU chip
Foot is connect with the alarm unit.
Optionally, the alarm unit, including：First resistor, second resistance, the second capacitance, diode, triode, police
Report device；The diode is in parallel with the alarm, and the cathode of the diode connects the power end, and anode connects the triode
Collector；Third pin of the both ends of the second resistance respectively with the base stage of the triode and the MCU chip is connect,
Described first resistor one end is connect with the third pin of the MCU chip, the other end be connected to the emitter of the triode with
Between ground, described second capacitance one end is connected to being connected between the emitter and ground of the triode of the first resistor
One end, the other end are connected between the second resistance and the base stage of the triode.
The advantageous effect of technical solution of the present invention is：Air-tightness detection device provided by the invention is a kind of easy device,
The air-tightness that simple and quick can distinguish product is good and bad.Each component that the present invention uses such as adsorption section, cavity portion and resistance bar
Cost it is all relatively low, while device assembling is simple, and operation is also and uncomplicated.It can be with according to the air-tightness difference of article to be detected
Different resistance values is exported within a short period of time, and the operation cycle is short, solves the cumbersome, test complicated for operation of existing air-leakage detector
The problem of time is permanent, the pile line operation being very suitable on production line.
Above description is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, below the special specific embodiment for lifting the present invention.
Description of the drawings
By reading the detailed description of hereafter preferred embodiment, it is various other the advantages of and benefit it is common for this field
Technical staff will become clear.Attached drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings：
Fig. 1 is a kind of structure diagram of air-tightness detection device provided in an embodiment of the present invention；
Fig. 2 is a kind of sectional view of embodiment of detection device ontology shown in FIG. 1；
Fig. 3 is the circuit diagram of warning device shown in FIG. 1.
Specific embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although the disclosure is shown in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.
Fig. 1 is a kind of structure diagram of air-tightness detection device provided in an embodiment of the present invention, as shown in Figure 1, airtight
Property detection device 100 includes：Detection device ontology 110 and warning device 120；
Detection device ontology 110, cavity portion 111, adsorption section 112 and resistance bar 113, adsorption section 112 including sealing are set
It is placed in one end of cavity portion 111 and is connected with cavity portion 111, cavity portion 111 passes through 112 airtight connection of adsorption section object to be detected
Product.
Resistance bar 113 is set in detection device ontology 110 and is connect with warning device 120, and resistance bar 113 is according to be checked
The air-tightness warning device 120 not in the same direction for surveying article exports different resistance values, and warning device 120 is according to detecting resistance bar
113 different resistance values send out different alarm songs, the prompting of the air-tightness quality of article to be detected are provided, if article to be detected
Air-tightness it is good, then warning device 120 according to detection device according to detect resistance bar 113 output resistance value provide it is airtight
The good alarm of property；If the air-tightness of article to be detected is bad, warning device 1 is defeated according to resistance bar 113 is detected
The another resistance value gone out provides the bad alarm of air-tightness.Technical scheme of the present invention only carries out just the air-tightness of product
The detection of step, the air-tightness that simple and quick can distinguish product is good and bad, each component such as adsorption section, cavity portion and the resistance of use
The cost of bar is all relatively low, while device assembling is simple, and operation is also and uncomplicated.It can according to the air-tightness difference of article to be detected
To export different resistance values within a short period of time, the operation cycle is short, solves the cumbersome, survey complicated for operation of existing air-leakage detector
The problem of examination time is permanent, the pile line operation being very suitable on production line.
Fig. 2 is a kind of sectional view of embodiment of detection device ontology shown in FIG. 1.As shown in Fig. 2, detection device sheet
Body 110 includes cavity portion 111, adsorption section 112 and resistance bar 113；Cavity portion 111 is to be detected by 112 airtight connection of adsorption section
Article；The resistance bar 113 is set on the side wall of the cavity portion 111, and the resistance bar 113 is used as the cavity portion
A part for 111 side walls, the two-terminal-grounding of the resistance bar 113.The device further includes piston 215, and piston 215 is inserted into cavity portion
111 make its inner cavity be in air-tight state, and can be moved in cavity portion 111.Probe 217 is additionally provided on 215 on piston, is visited
First 217 moved with piston 215 and with 113 slidable connection of resistance bar, so as to exporting different resistance values to warning device 120.
This gives the specific implementation that resistance value is answered according to the airtight implementations the output phase of article to be detected, profits
It is detected with closed cavity portion to treat the air-tightness of detection article, this just needs cavity portion close with article to be detected
Close connection.Adsorption section 112 in the present embodiment, can take the mode of suction nozzle to be attached, and can also replace according to actual needs
It can reach the device of identical function for other.In the rear end of cavity portion, the inner cavity to ensure cavity portion is in air-tight state, and
The air-tightness of article to be detected can be detected, is designed using the piston being adapted to inner cavity, this ensure that inner cavity is closed.
In the present embodiment, device shown in Fig. 2 also includes push-pull rod 214, and metal wire is enclosed on the body of rod, pops one's head in
217 connect with one end of metal wire, and the metal wire other end is informed of a case alarm device 120；It is constant outer to apply one in 214 rear end of push-pull rod
Power, push-pull rod 214 generates corresponding displacement according to the airtight implementations of article to be detected, and then changes probe 217 and resistance bar
113 contact position, resistance bar 113 pass through metal wire to 120 the output phase of warning device according to the contact position variation of probe 217
The resistance value answered.
In the present embodiment, detection device ontology 110 is in needle tube type, and adsorption section 112 is designed using suction nozzle, cavity
The ozzle one end in portion 111 and one end airtight connection of suction nozzle, the other end airtight connection article to be detected of suction nozzle；Suction nozzle can basis
The difference of article to be detected is replaced.It present embodiments provides for the embodiment of different Articles detectings, designs replaceable
Suction nozzle, cost is reduced, it is of course also possible to replace with other suitable components, the stream being more suitable on production line as needed
Aqueous operation.
In the present embodiment, it is preferred that resistance bar 113 is resistance value uniformly uniform stock.However, it is not limited to this,
In other embodiment, the position offset for very little of popping one's head in can also be passed through by the way that resistance bar is designed as non-uniform pull rod
Generate very big change in resistance, make warning device sensitiveer, it is specific it is contemplated that warning device design and application it is constant
Power size carries out the setting of resistance value and increases resistance value near critical localisation.
In one embodiment of the invention, in device shown in Fig. 2,214 rear end of push-pull rod is provided with and the push-and-pull
The driving device 218 that bar 214 connects for exerting a force to the push-pull rod 214, makes push-pull rod 214 drive the piston 215 and visit
First 217 are moved.In present embodiment, the driving device 218 is drive motor.Pass through design driven device, Ke Yishi
Add or remove stable constant force, simplify operation, facilitate implementation, and constant force is designed as drawing force or motive force, it can basis
It needs voluntarily to determine in implementation.
In the present embodiment, detection device ontology 110 further includes resetting spring 219；
One end that cavity portion 111 connects adsorption section 112 is fixed in resetting spring 219, one end, and the other end is solid with piston 215
Fixed connection, for piston 215 to be reset to initial position after detection.
In present embodiment, setting resetting spring can in each detection later automatically by piston reset to initial position,
It is simple and convenient.The size that constant force can be considered in the specification of resetting spring is configured, and otherwise can generate and bad resetting spring is drawn to make
Its situation about can not work normally.It is of course also possible to resetting spring is not provided with, and in the case where being not provided with the spring, Ke Yitong
Cross the operation that push-pull rod is resetted.
Fig. 3 is the circuit diagram of warning device shown in FIG. 1.As shown in figure 3, warning device 120 includes：Partial pressure unit 321,
Detect control unit 322 and alarm unit 323；
Partial pressure unit 321, including slide rheostat RX, slide rheostat RX is electrically connected with the resistance bar in detection device ontology
It connects.
The input terminal of detecting control unit 322 is connected between slide rheostat RX and resistance bar 113, is slided for detecting
The potential change of rheostat RX, the output terminal of detecting control unit 322 connect with alarm unit 323, are detected for basis
The potential change control alarm unit 323 of slide rheostat RX sends out corresponding alarm.
Warning device is designed as partial pressure unit, detecting control unit and alarm unit three parts, has efficiently controlled dress
The normal work put, at the same it is again not cumbersome.
As shown in figure 3, partial pressure unit 321 further includes：First capacitance C1, connects between power end and ground, slide rheostat RX
Sliding end be connected between the first capacitance C1 and the power end.
Detecting control unit 322 includes：3rd resistor R3, the 4th resistance R4 and MCU chip；The electricity of 3rd resistor R3 and the 4th
R4 series connection is hindered, the first pin P1 of MCU chip is connected between 3rd resistor R3 and the 4th resistance R4, the second pipe of MCU chip
Foot P2 is connected between slide rheostat RX and resistance bar, and the third pin P3 of MCU chip is connect with alarm unit 323.
Alarm unit 323 includes：First resistor R1, second resistance R2, the second capacitance C2, diode D1, triode T1, police
Report device；Diode D1 is in parallel with alarm, and the cathode of diode D1 connects power end, and anode connects the collector of triode T1；Second
Third pin P3 of the both ends of resistance R2 respectively with the base stage of triode T1 and MCU chip is connect, first resistor R1 one end and MCU
The third pin P3 connections of chip, the other end are connected between the emitter and ground of triode T1, the connection of second capacitance C2 one end
In one end being connected between the emitter and ground of triode T1 of first resistor R1, the other end is connected to second resistance R2 and three
Between the base stage of pole pipe T1.
Low-voltage dc power supply VDD can be selected in power end in Fig. 3, is selected convenient for the device of partial pressure unit.In partial pressure unit
In setting, the slide plate of slide rheostat RX is adjusted, to control the resistance value in slide rheostat RX access warning devices, divides and goes suitably
Voltage.First capacitance C1 is filter capacitor, can be preferably 2.2uF.The core of detecting control unit is chosen as microcontroller
MCU burning can enter the work that software controls alarm unit as needed, and specific embodiment will refer to later.R3, R4 can
It is determined according to the voltage of the power reguirements of MCU and power end.Warning device can be selected as in alarm unit buzzer or
LED light, can also replace with other can send out the device of alarm.
By taking buzzer as an example, passive buzzer BUZ, R1 inexpensively is selected to provide protection as pull down resistor, it can be with
Preferably 3.3k Ω, R2 can be preferably 560 Ω for setting base current.C2 is similarly filter capacitor, can be preferably
2.2uF.D1 is preferably Schottky diode.Single-chip microprocessor MCU is by software set, according on the resistance bar of detection device ontology
The change in resistance of output exports different PWM square waves, i.e. the AC signal from third pin P3 output certain frequencies, positive half cycle is high
Current potential, negative half period low potential (ground connection) have the base emitter interpolar that electric current flows through triode T1, three poles in positive half cycle in this way
Pipe T1 is connected, and capacitance C2 electric discharges is given during low potential, while triode T1 ends.Diode D1 is used to absorb the repercussion of BUZ coils
Pulse avoids damage triode T1.It is defeated according to the resistance value that the resistance bar of detection device ontology exports that a kind of setting MCU is given below
Go out the specific embodiment of PWM square waves：
Initially, it pops one's head in the center of resistance bar, resistance bar (resistance value R, total length L) is divided into two at this time
Point, parallel resistance R/4.The good software of MCU burnings, turning on the switch makes VDD start to power, and sets and is exported under the voltage by MCU
PWM square waves so that buzzer BUZ is rung per 3s primary.Suitable suction nozzle is more finished changing, and the good article of an air-tightness is closed connects
It touches, providing a constant lasting power F by lower button pushes or stretch pull rod until not moving, at this time due to push-pull rod
Pulling probe is l relative to the position offset of resistance bar0, at this time the parallel resistance on resistance bar beSetting should
It is primary to be rung per 3s by the alarm of MCU control buzzers under critical voltage, it pops one's head in and is more than relative to the position offset of resistance bar
l0When, setting is rung primary by MCU control buzzers per 1S at this time.The bad article (gas leakage article) of an air-tightness is replaced,
Probe is more than l relative to the offset of resistance bar under constant force F0, rung at this time by MCU control buzzers per 1S primary.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (8)
1. a kind of air-tightness detection device, which is characterized in that described device includes：Detection device ontology and with the detection device sheet
The warning device of body connection, the detection device ontology include cavity portion, adsorption section and the resistance bar of sealing；
The adsorption section is set to one end of the cavity portion and is connected with the cavity portion, and the cavity portion passes through the absorption
Portion's airtight connection article to be detected；
The resistance bar is set in the detection device ontology and is connect with the warning device, and the resistance pole-footing is according to be checked
The air-tightness difference for surveying article exports different resistance values；
The warning device sends out different alarm songs according to the different resistance values for detecting the resistance bar, provides article to be detected
Air-tightness quality prompting；
The resistance bar is set on the side wall of the cavity portion and as a part for the cavity portion side wall；
The detection device ontology further includes piston and probe；
The piston is inserted into the cavity portion and can be moved in the cavity portion；The probe is set on the piston
And connect with the warning device, the probe it is mobile with the piston and with the resistance bar slidable connection, so as to institute
It states warning device and exports different resistance values.
2. air-tightness detection device as described in claim 1, which is characterized in that the detection device ontology further includes push-and-pull
Bar, the push-pull rod are fixedly installed on the outer end side that the piston is inserted into after the cavity portion, for exerting a force to the piston
Move the piston.
3. air-tightness detection device as described in claim 1, which is characterized in that the detection device ontology further includes reset bullet
Spring；
The resetting spring is set in the cavity portion, and one end that the cavity portion connects the adsorption section is fixed in one end,
The other end is fixedly connected with the piston, for after detection by the piston reset to initial position.
4. air-tightness detection device as described in claim 1, which is characterized in that the adsorption section can be according to article to be detected
Difference is replaced.
5. such as claim 1-4 any one of them air-tightness detection devices, which is characterized in that the warning device includes：Point
Press unit, detecting control unit and alarm unit；
The partial pressure unit includes slide rheostat, and the slide rheostat is electrically connected with the resistance bar；The detecting control
The input terminal of unit is connected between the slide rheostat and the resistance bar, for detecting the current potential of the slide rheostat
Variation, the output terminal of the detecting control unit is connect with the alarm unit, for according to the slip variable resistance detected
The potential change of device controls the alarm unit to send out corresponding alarm.
6. air-tightness detection device as claimed in claim 5, which is characterized in that the partial pressure unit further includes：First capacitance；
First capacitance is connect between power end and ground, and the sliding end of the slide rheostat is connected to first capacitance and institute
It states between power end.
7. air-tightness detection device as claimed in claim 5, which is characterized in that the detecting control unit, including：Third electricity
Resistance, the 4th resistance and MCU chip；
The 3rd resistor is connected with the 4th resistance, the first pin of the MCU chip be connected to the 3rd resistor and
Between 4th resistance, the second pin of the MCU chip is connected between the slide rheostat and the resistance bar, institute
The third pin for stating MCU chip is connect with the alarm unit.
8. air-tightness detection device as claimed in claim 7, which is characterized in that the alarm unit, including：First resistor,
Second resistance, the second capacitance, diode, triode, alarm；
The diode is in parallel with the alarm, and the cathode of the diode connects power end, and anode connects the collection of the triode
Electrode；
Third pin of the both ends of the second resistance respectively with the base stage of the triode and the MCU chip is connect, described
First resistor one end is connect with the third pin of the MCU chip, and the other end is connected to the emitter and ground of the triode
Between, described second capacitance one end is connected to be connected between the emitter and ground of the triode the one of the first resistor
End, the other end are connected between the second resistance and the base stage of the triode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510631935.4A CN105181279B (en) | 2015-09-29 | 2015-09-29 | A kind of air-tightness detection device |
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| CN201510631935.4A CN105181279B (en) | 2015-09-29 | 2015-09-29 | A kind of air-tightness detection device |
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| CN105181279B true CN105181279B (en) | 2018-06-26 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106441746A (en) * | 2016-09-06 | 2017-02-22 | 国网山东省电力公司潍坊供电公司 | Gas leakage speed detector specially used for GIS equipment |
| CN114295303A (en) * | 2021-08-20 | 2022-04-08 | 襄阳新舟自动化科技有限公司 | Lifeboat airtightness detector and detection method thereof |
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| SU1633298A1 (en) * | 1989-09-07 | 1991-03-07 | Предприятие П/Я А-7797 | Pipe line |
| CN102162765A (en) * | 2011-01-26 | 2011-08-24 | 南京航空航天大学 | System and method for detecting leakage of high-temperature gas in high-temperature high-pressure guide pipe of airplane |
| CN104236812A (en) * | 2013-06-09 | 2014-12-24 | 同济大学 | Tunnel water leakage detection method and device based on conductivity |
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