CN102455235A - Pressure testing device - Google Patents
Pressure testing device Download PDFInfo
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- CN102455235A CN102455235A CN201010528281XA CN201010528281A CN102455235A CN 102455235 A CN102455235 A CN 102455235A CN 201010528281X A CN201010528281X A CN 201010528281XA CN 201010528281 A CN201010528281 A CN 201010528281A CN 102455235 A CN102455235 A CN 102455235A
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Abstract
The invention relates to a pressure testing device, which comprises a vacuum pump, a first electromagnetic valve, a second electromagnetic valve, a pressure sensor, an operation module and a processing unit, wherein the vacuum pump is provided with a negative pressure end and a positive pressure end; the vacuum pump pumps air from the negative pressure end and exhausts air from the positive pressure end; the first electromagnetic valve is provided with a first air inlet end and a first exhaust end connected with the negative pressure end; the second electromagnetic valve is provided with a second exhaust end and a second air inlet end connected with the positive pressure end; one end of the pressure sensor is respectively connected with the first air inlet end of the first electromagnetic valve and the second exhaust end of the second electromagnetic valve; the other end of the pressure sensor is connected with a pressure testing end; the operation module is used for displaying an operation interface to input pressure testing parameters; and the processing unit is used for controlling the vacuum pump and the first electromagnetic valve or the second electromagnetic valve according to the pressure testing parameters received by the operation module, carrying out one of a positive pressure test and a negative pressure test on an object to be tested through the pressure testing end, controlling the pressure sensor to sense the pressure state of the object to be tested and displaying a state result sensed by the pressure sensor on the operation interface.
Description
Technical field
The present invention relates to a kind of air pressure proving installation, more specifically, relate to a kind of having concurrently and produce the air pressure proving installation of stablizing malleation pressure source and negative pressure pressure source and can detecting the determinand pressure state simultaneously.
Background technology
At present, various electronic products are bragged about the waterproof or the moisture-proof function that can have to a certain degree gradually on the market, for example: waterproof electronic watch, waterproof mobile phone, waterproof digital camera etc.Because the moulding of this market trend, electronic product has certain waterproof or moisture-proof function is imperative.
The typical case is last, and waterproof that industry adopted or moistureproof method of testing are directly inserted in the water or with the mode of air pressure simulation hydraulic pressure to test for the assembly joint or the assembling contact of object under test nothing more than utilizing.For example; Negative pressure pressure that is produced or positive pressure pressure are put on above-mentioned joint or assembling contact; And the air pressure that pressure transducer comes this object under test of sensing to be kept is set; Can't keep air pressure to a certain degree in case it takes place, represent that then the waterproof of this object under test or moisture resistance are bad.
Based on above-mentioned method of testing, manufacturer must have the device that produces negative pressure pressure and positive pressure pressure respectively.Generally speaking, desire produces negative pressure pressure must be by vacuum pump, and desire produces positive pressure pressure then must be by means of air compressor machine.But in order to tackle the trend that reduces production costs and avoid the profit compression, manufacturer certainly will need more to simplify or more economical proving installation, and a kind of proving installation that has generation negative pressure and malleation concurrently will be the target that the testing tool deviser desires most ardently exploitation.
Moreover as previously mentioned, the pressure degree of accuracy that air compressor machine produced is poor than vacuum pump, and when therefore utilizing prior art to do the malleation pressure test, difficulty is done accurate fine setting to the positive pressure pressure of wanting to bestow determinand.
Summary of the invention
In view of the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of air pressure proving installation, have concurrently to produce and stablize the function that negative pressure pressure source and stable malleation pressure source while can detect the determinand pressure state.
Another object of the present invention is to provide a kind of air pressure proving installation; It can supply the tester to set required test parameter; And make test jobs more easy and perfect; Improve the degree of accuracy of test result simultaneously, and be convenient to the data that the checking personnel obtain test jobs and verify, and integrate these data and analyze for the checking personnel.
For reaching aforementioned purpose and other purposes; The present invention provides a kind of air pressure proving installation; In order to through the pressure test end determinand is carried out one of them of malleation pressure test and negative pressure pressure test according to the air pressure test parameter; It comprises: vacuum pump, have negative pressure end and malleation end, and this vacuum pump is bled and is carried out exhaust from this malleation end from this negative pressure end; First solenoid valve, first exhaust end that has first inlet end and be connected with this negative pressure end; Second solenoid valve, have second exhaust end and with second inlet end of this positive press bond; Pressure transducer; The one of which end is connected to first inlet end of this first solenoid valve and second exhaust end of this second solenoid valve; The other end is connected with this pressure test end; This pressure transducer is passed to this pressure test end in order to the pressure with this first inlet end and this one of them generation of second exhaust end, and passes through the pressure state of this this determinand of pressure test end sensing; Operational module, in order to operation display interface for the input this air pressure test parameter; And processing unit; Electrically connect with this vacuum pump, this first solenoid valve, this second solenoid valve, this pressure transducer and this operational module; In order to this determinand is carried out one of them of this malleation pressure test and this negative pressure pressure test according to this received air pressure test parameter of this operational module; When if this air pressure test parameter belongs to the negative pressure test event; This processing unit this vacuum pump of control and first solenoid valve with operation that determinand is bled, and are controlled pressure state that this operational module shows this determinand that this pressure transducer senses on this operation interface; When if this air pressure test parameter belongs to the malleation test event; This processing unit this vacuum pump of control and second solenoid valve; This determinand being carried out exhaust pressurization operation, and control pressure state that this operational module shows this determinand that this pressure transducer senses on this operation interface.
By on can know; Air pressure proving installation of the present invention can produce the function of stablizing malleation pressure source and negative pressure pressure source and testing requirement person's malleation and two kinds of test events of negative pressure being provided, and in other words, with single testing tool dual-use function is provided; For testing requirement person; Except the convenience that improves test, more can avoid in response to negative pressure and two kinds of pressure term purposes tests of malleation, need purchase two kinds of testing tools respectively and produce the problem that increases cost and take parking space.In addition; Air pressure proving installation of the present invention also provides a kind of operation interface; Being convenient to testing requirement person whereby sets test parameter and is easy to obtain test result; And the memory function of test result more can be provided according to the preservation demand of test result, and the data that can supply the checking personnel that test jobs is obtained are verified and are analyzed.
Description of drawings
Fig. 1 is the basic framework synoptic diagram of air pressure proving installation of the present invention;
Fig. 2 is the operation interface example that operational module showed of air pressure proving installation of the present invention;
Fig. 3 is the basic framework synoptic diagram of another embodiment of air pressure proving installation of the present invention;
Fig. 4 is the basic framework synoptic diagram of another embodiment of air pressure proving installation of the present invention; And
Fig. 5 is the basic framework synoptic diagram of another embodiment of air pressure proving installation of the present invention.
[main element symbol description]
11 vacuum pumps, 110 negative pressure ends
111 malleation ends, 12 first solenoid valves
120 first exhaust ends, 121 first inlet ends
13 second solenoid valves, 130 second inlet ends
131 second exhaust ends, 14 pressure transducers
15 operational modules, 17 processing units
2 determinands, 20 pressure test ends
3 operation interfaces, 30 test event input frames
31 air pressure test parameter input frames
32 pressure keep the parameter input frame
33 initiating keys, 34 storage keys
40 negative pressure pressure regulator valves, 41 filtrators
42 gas storage unit, 43 pressure switches
44 filtrators, 45 malleation pressure regulator valves
46 the 3rd solenoid valves
Embodiment
Below through specific instantiation technology contents of the present invention is described, those skilled in the art can understand other advantages of the present invention and effect easily by the content that this instructions disclosed.The present invention also can implement or use through other different instantiations, and each item details in this instructions also can be based on different viewpoints and application, carries out various modifications and change under the spirit of the present invention not deviating from.
Following further explain viewpoint of the present invention.
At first, Fig. 1 is the basic framework synoptic diagram of air pressure proving installation of the present invention.Air pressure proving installation of the present invention can provide stablizes malleation pressure source and negative pressure pressure source; Be that it is the pressure test instrument with the malleation of providing and negative pressure test function; Can carry out malleation pressure test or negative pressure pressure test through 20 pairs of determinands of pressure test end 2 according to the air pressure test parameter whereby, and can obtain malleation test result or negative pressure test result according to testing requirement.This air pressure proving installation comprises with lower member: vacuum pump 11, first solenoid valve 12, second solenoid valve 13, pressure transducer 14, operational module 15 and processing unit 17.
This vacuum pump 11 has negative pressure end 110 and malleation end 111, and this vacuum pump 11 is bled and carried out exhaust from this malleation end 111 from this negative pressure end 110.
Second inlet end 130 that second solenoid valve 13 has second exhaust end 131 and is connected with this malleation end 111.
Aforementioned air pressure test parameter is different according to test event; For example; If the air pressure test parameter belongs to the malleation test event, then this air pressure test parameter comprises: to this determinand carry out exhaust pressurization operation time upper limit value, target pressure value, this determinand accomplished the post-job time set value that keep-ups pressure of exhaust pressurization, this determinand accomplish at least one of group that keep-up pressure higher limit and the lower limit of exhaust pressurization operation form; Moreover; If the air pressure test parameter belongs to the negative pressure test event, then this air pressure test parameter comprises: to this determinand bleed operation time upper limit value, target pressure value, this determinand accomplished the post-job time set value that keep-ups pressure of bleeding, this determinand accomplish at least one of group that keep-up pressure higher limit and the lower limit of the operation of bleeding form.
Be illustrated in figure 2 as an example at aforementioned operation interface.The user can select the test event of institute's desire execution at the test event input frame 30 of operation interface 3; With this example; When the selected test event of user is the malleation test; The user can set the air pressure test parameter of malleation test event; Be the user can for example carry out exhaust pressurization operation in air pressure test parameter input frame 31 inputs of operation interface 3 to this determinand time upper limit value and target pressure value, and other can keep 32 inputs of parameter input frame for example this determinand to be accomplished the keep-up pressure higher limit and the lower limit that keep-ups pressure of the post-job time set value that keep-ups pressure of exhaust pressurization, this determinand completion exhaust pressurization operation at the pressure of operation interface 3.
Then; Select the initiating key 33 of this operation interface 3 the user after; This processing unit 17 is controlled this vacuum pump 11 and second solenoid valve 13 according to these operation interface 3 received air pressure test parameters; This determinand is carried out exhaust pressurization operation; And control the pressure state of this this determinand 2 of pressure transducer 14 sensings, and the pressure state that this this pressure transducer 14 of operation interface 3 corresponding demonstrations is sensed for example shows and implements pressure, exhaust pressurization job scheduling situation, this determinand of this determinand keep-ups pressure after the exhaust pressurization operation progress situation and test through at least one of the group that whether organized after exhaust pressurization operation.
After person to be used accomplished test, the user can store this test parameter and test result through the storage key 34 of operational module 15 these operation interfaces 3 of selection.
Can know by operation interface shown in Figure 23; These operation interface 3 upper right corner institute's data presented " 852.7 "; It is born force value by the determinand that pressure transducer 14 senses, and belongs to and reaches within the upper pressure limit and low pressure limit that the retention time sets because force value is born by this institute, be i.e. 800mmHg＜852.7mmHg＜900mmHg; So the expression determinand passes through the malleation test jobs, and can be at these operation interface 3 lower left corner display text informations " Pass. ".
Moreover another kind of test status is, in the malleation test jobs; Not reaching value actuation time that exhaust is pressurizeed in the exhaust pressurized treatments, is example with Fig. 2, within promptly 10 seconds; If the force value that determinand bears that pressure transducer 14 senses all can't reach goal pressure; Or even minimum when this goal pressure, represent that promptly this determinand has the gas leakage situation, so these operation interface 3 lower left corners get final product display text information " Fail. "; And can directly finish test, and must not carry out the follow-up treatment step that keep-ups pressure.
Corresponding; If the selected test event of user is the negative pressure test; These processing unit 17 this vacuum pump 11 of control and first solenoid valves 12; With operation that determinand 2 is bled; And control the pressure state of this this determinand 2 of pressure transducer 14 sensings, and the pressure state that this this pressure transducer 14 of operation interface 3 corresponding demonstrations is sensed for example shows that implementing pressure, the job scheduling of bleeding situation, this determinand of this determinand after the operation of bleeding bleeds the progress situation that keep-ups pressure after the operation and test through at least one of the group that whether formed.
Then, be illustrated in figure 3 as the basic framework synoptic diagram of another embodiment of air pressure proving installation of the present invention.Be simplified illustration, here only explanation and Fig. 1 difference.The air pressure proving installation of this embodiment also comprises negative pressure pressure regulator valve 40 and filtrator 41; This negative pressure pressure regulator valve 40 be arranged at this first solenoid valve 12 and and the path of bleeding of 14 formation of pressure transducer among and electrically connect this processing unit 17, this negative pressure pressure regulator valve 40 is in order to according to the negative pressure pressure in this this path of bleeding of air pressure test parameter adjustment.This negative pressure pressure regulator valve 40 can for example be electropneumatic proportioning valve or flowmeter, so that the negative pressure that this vacuum pump 11 is provided reaches the target pressure value that the user sets fast.
This filtrator 41 is arranged between this pressure transducer 14 and this pressure test end 20, in order to filter through the impurity in the path of 20 at this pressure transducer 14 and this pressure test end, for example aqueous vapor, oil or dust etc.
Then, be illustrated in figure 4 as the basic framework synoptic diagram of another embodiment of air pressure proving installation of the present invention.Be simplified illustration, here only explanation and Fig. 1 difference.The air pressure proving installation of this embodiment also comprises gas storage unit 42, pressure switch 43, filtrator 44 and malleation pressure regulator valve 45.This gas storage unit 42, filtrator 44 and malleation pressure regulator valve 45 be arranged on this second solenoid valve 13 and and this pressure transducer 14 between among the exhaust pathway that forms and electrically connect this processing unit 17.
This gas storage unit 42 is in order to store the gas that this vacuum pump 11 is discharged through this second solenoid valve 13; And this determinand 2 carried out exhaust pressurization operation; And this pressure switch 43 connects this gas storage unit 42; This processing unit 17 gets into gas storage unit 42 according to the pressure of the gas that stores in this gas storage unit 42 so that whether these pressure switch 43 control vacuum pumps 11 inflate.In addition, in another specific embodiment, pressure switch 43 also can be controlled vacuum pump 11 automatically according to the pressure in the gas storage unit 42 and inflate and get into gas storage unit 42.
This filtrator 44 filters the impurity that carries out under the malleation test jobs from 42 pairs of these determinands 2 of this storage element in order to this determinand 2 is being carried out in the malleation test jobs.
This malleation pressure regulator valve 45 is in order to adjust this vacuum pump 11 carries out the malleation test jobs through 13 pairs of these determinands 2 of this second solenoid valve pressure.And this malleation pressure regulator valve 45 can for example be electropneumatic proportioning valve or flowmeter, so that the exhaust of the malleation test jobs that this vacuum pump 11 is provided reaches the target pressure value that the user sets fast.
In addition, be illustrated in figure 5 as the basic framework synoptic diagram of another embodiment of air pressure proving installation of the present invention.Be simplified illustration, here only explanation and Fig. 1 difference.The air pressure proving installation of this embodiment also comprises the 3rd solenoid valve 46.The 3rd solenoid valve 46 be arranged at pressure transducer 14 in order to connecting an end of first inlet end 121 and second exhaust end 131, and electrically connect processing unit 17 simultaneously.The 3rd solenoid valve 46 can be according to control this pressure transducer 14 of sealing and this pressure test end 20 of processing unit 17.Particularly; When this determinand 2 is carried out malleation pressure test or negative pressure pressure test; After the pressure state that this processing unit 17 receives this determinand 2 that pressure transducer 14 sensed has satisfied the force value that exhaust pressurization operation or the operation of bleeding set; This processing unit 17 is promptly controlled 46 actions of the 3rd solenoid valve, and with 11 pairs of these determinands of sealing vacuum pump, 2 formed path and the exhaust pathways of bleeding, continuing, it is aforementioned like the described test that keep-ups pressure of Fig. 2 to carry out.If after predetermined retention time, the force value of this determinand 2 that is sensed at this pressure transducer 14 meets the keep-up pressure upper limit and the lower limit that sets, and representes that then this determinand 2 is through pressure test.
In sum, air pressure proving installation of the present invention be except that can provide the test of malleation and negative pressure through the single vacuum pump simultaneously, more provides a kind of person easy to use to set test parameter, is easy to the operation interface obtaining test result and effectively preserve test result.
Above-mentioned embodiment is illustrative principle of the present invention and effect thereof only, but not is used to limit the present invention.Any those skilled in the art all can be under spirit of the present invention and category, and the foregoing description is modified and changed.Therefore, rights protection scope of the present invention should be listed like the claim scope.
Claims (10)
1. air pressure proving installation in order to through the pressure test end determinand is carried out one of them of malleation pressure test and negative pressure pressure test according to the air pressure test parameter, is characterized in that this air pressure proving installation comprises:
Vacuum pump has negative pressure end and malleation end, and this vacuum pump is bled and carried out exhaust from this malleation end from this negative pressure end;
First solenoid valve, first exhaust end that has first inlet end and be connected with this negative pressure end;
Second solenoid valve, have second exhaust end and with second inlet end of this positive press bond;
Pressure transducer; The one of which end is connected to first inlet end of this first solenoid valve and second exhaust end of this second solenoid valve; The other end is connected with this pressure test end; This pressure transducer is passed to this pressure test end in order to the pressure with this first inlet end and this one of them generation of second exhaust end, and passes through the pressure state of this this determinand of pressure test end sensing;
Operational module, in order to operation display interface for the input this air pressure test parameter; And
Processing unit; Electrically connect with this vacuum pump, this first solenoid valve, this second solenoid valve, this pressure transducer and this operational module; In order to this determinand is carried out one of them of this malleation pressure test and this negative pressure pressure test according to this received air pressure test parameter of this operational module; When if this air pressure test parameter belongs to the negative pressure test event; This processing unit this vacuum pump of control and first solenoid valve with operation that determinand is bled, and are controlled pressure state that this operational module shows this determinand that this pressure transducer senses on this operation interface; When if this air pressure test parameter belongs to the malleation test event; This processing unit this vacuum pump of control and second solenoid valve; This determinand being carried out exhaust pressurization operation, and control pressure state that this operational module shows this determinand that this pressure transducer senses on this operation interface.
2. air pressure proving installation according to claim 1; It is characterized in that; Also comprise the negative pressure pressure regulator valve; This negative pressure pressure regulator valve be arranged at this first solenoid valve and and this pressure transducer between among the path of bleeding that forms and electrically connect this processing unit, this negative pressure adjuster is in order to according to the negative pressure pressure in this this path of bleeding of air pressure test parameter adjustment.
3. air pressure proving installation according to claim 1 is characterized in that, also comprises filtrator, and this filtrator is arranged between this pressure transducer and this pressure test end, in order to filter the impurity through the path between this pressure transducer and this pressure test end.
4. air pressure proving installation according to claim 1; It is characterized in that; Also comprise gas storage unit and the pressure switch that connects this gas storage unit; This gas storage unit is arranged between this second exhaust end and this pressure transducer of this second solenoid valve, and in order to store gas that this vacuum pump discharges through this second solenoid valve and this determinand is carried out exhaust pressurization operation, whether this pressure switch is vented to this gas storage unit in order to control this vacuum pump.
5. air pressure proving installation according to claim 1; It is characterized in that; Also comprise the malleation pressure regulator valve; This malleation pressure regulator valve be arranged on this second solenoid valve and and this pressure transducer between among the exhaust pathway that forms and electrically connect this processing unit, this malleation pressure regulator valve is in order to according to the positive pressure pressure in this this exhaust pathway of air pressure test parameter adjustment.
6. air pressure proving installation according to claim 1; It is characterized in that this operation interface provides the input parameter that belongs to the malleation test event about the air pressure test parameter and comprises: to this determinand carry out exhaust pressurization operation time upper limit value, target pressure value, this determinand accomplished the post-job time set value that keep-ups pressure of exhaust pressurization, this determinand accomplish at least one of group that keep-up pressure higher limit and the lower limit of exhaust pressurization operation form.
7. air pressure proving installation according to claim 6; It is characterized in that the state outcome that this operation interface showed comprises: implement pressure state, exhaust pressurization job scheduling situation, this determinand of this determinand keep-ups pressure after the exhaust pressurization operation progress situation and test after exhaust pressurization operation through at least one of the group that whether formed.
8. air pressure proving installation according to claim 1; It is characterized in that this operation interface provides the input parameter that belongs to the negative pressure test event about the air pressure test parameter and comprises: to this determinand bleed operation time upper limit value, target pressure value, this determinand accomplished the post-job time set value that keep-ups pressure of bleeding, this determinand accomplish at least one of group that keep-up pressure higher limit and the lower limit of the operation of bleeding form.
9. air pressure proving installation according to claim 8; It is characterized in that the state outcome that this operation interface showed comprises: implement pressure state, the job scheduling of bleeding situation, this determinand of this determinand keep-ups pressure after the operation of bleeding progress situation and test after the operation of bleeding through at least one of the group that whether formed.
10. air pressure proving installation according to claim 1; It is characterized in that; Also comprise the 3rd solenoid valve; The 3rd solenoid valve be arranged at this pressure transducer in order to connecting an end of this first inlet end and this second exhaust end, and electrically connect this processing unit, the 3rd solenoid valve is in order to control this pressure transducer of sealing and this pressure test end according to processing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010528281XA CN102455235A (en) | 2010-11-02 | 2010-11-02 | Pressure testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010528281XA CN102455235A (en) | 2010-11-02 | 2010-11-02 | Pressure testing device |
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| Publication Number | Publication Date |
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| CN102455235A true CN102455235A (en) | 2012-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010528281XA Pending CN102455235A (en) | 2010-11-02 | 2010-11-02 | Pressure testing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109282952A (en) * | 2018-08-29 | 2019-01-29 | 西北工业大学 | Positive and negative constant pressure sealing property detection system and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0165342A1 (en) * | 1984-05-23 | 1985-12-27 | VARIAN S.p.A. | Apparatus for detecting leaks in pressurized objects and containers |
| JP3430882B2 (en) * | 1997-09-24 | 2003-07-28 | エヌオーケー株式会社 | Leak test apparatus and leak test method |
| CN201043925Y (en) * | 2007-05-10 | 2008-04-02 | 山东华腾环保科技有限公司 | Air pressure switch checking device of passenger train toilet |
| CN201051040Y (en) * | 2007-01-31 | 2008-04-23 | 丹东热工仪表有限公司 | Leakage detection device |
| CN101644614A (en) * | 2008-08-05 | 2010-02-10 | 北京谊安医疗系统股份有限公司 | Air pressure monitoring device |
-
2010
- 2010-11-02 CN CN201010528281XA patent/CN102455235A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0165342A1 (en) * | 1984-05-23 | 1985-12-27 | VARIAN S.p.A. | Apparatus for detecting leaks in pressurized objects and containers |
| JP3430882B2 (en) * | 1997-09-24 | 2003-07-28 | エヌオーケー株式会社 | Leak test apparatus and leak test method |
| CN201051040Y (en) * | 2007-01-31 | 2008-04-23 | 丹东热工仪表有限公司 | Leakage detection device |
| CN201043925Y (en) * | 2007-05-10 | 2008-04-02 | 山东华腾环保科技有限公司 | Air pressure switch checking device of passenger train toilet |
| CN101644614A (en) * | 2008-08-05 | 2010-02-10 | 北京谊安医疗系统股份有限公司 | Air pressure monitoring device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109282952A (en) * | 2018-08-29 | 2019-01-29 | 西北工业大学 | Positive and negative constant pressure sealing property detection system and method |
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