CN204314030U - Hand-held leak detecting device - Google Patents
Hand-held leak detecting device Download PDFInfo
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- CN204314030U CN204314030U CN201420830915.0U CN201420830915U CN204314030U CN 204314030 U CN204314030 U CN 204314030U CN 201420830915 U CN201420830915 U CN 201420830915U CN 204314030 U CN204314030 U CN 204314030U
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Abstract
The utility model discloses a kind of hand-held leak detecting device, comprise hand-held housing, pneumatic valve body is provided with in described hand-held housing, pneumatic circuit is provided with in pneumatic valve body, the import and export place of pneumatic circuit is respectively arranged with inlet union and outlet connection, one pressure transducer is connected with described pneumatic circuit, and described pneumatic circuit is also provided with solenoid valve.Because little volume parts is inflated without the need to large discharge pneumatic circuit, adopt small-size hand-hold housing design and small switch solenoid valve, the putting position reducing mechanical part size to greatest extent and realize test pressure transducer as far as possible near tested part, to obtain more accurately and test result fast.
Description
Technical field
The utility model relates to the field of leaking hunting, and relates in particular to a kind of small volume, lower-cost hand-held leak detecting device.
Background technology
Industry of leaking hunting is in constantly evolution for the requirement of the little volume parts of test always.In recent years, ensureing that measuring accuracy reaches beyond test request, the miniaturization of equipment, cost degradation also becomes an important developing direction.
Existing equipment situation on market, the equipment of high precision measurement is mostly bulky, arranges/mobile inconvenience, and the most low precision of mini-plant, function is simple, can not adapt to the testing requirement of high requirement.
To leak hunting principle: whether a part is revealed, with pressurized air be media test time method, large is not 2 classes: pressure drop method (Pressure Decay) and pressure differential method (Pressure Differential), the former inflates tested part, the pressure change of observation part after pressure stabilisation, if any leakage, then pressure drop.The latter, simultaneously to measured piece inflation, takes the pressure differential between the standard component that do not leak and measured piece to judge.
Both measuring accuracies all depend on the precision of pressure transducer, and usually differential sensor accuracy is different from usual pressure sensor, do not set forth herein at this to differential mode.
If China Patent No. is 97200067.4 disclose a kind of adjustable pressure leak-testing device, include a stagnation pressure table directly communicated with pressure source, and one communicates to detect the dividing potential drop table that measured object leaks pressure degree with above-mentioned stagnation pressure table by valve switch; It is characterized in that: this stagnation pressure table and this dividing potential drop table are spun on two to be respectively conducted on the four-way connection with four air holes arranged side by side by valve switch; Wherein, one air hole of the four-way connection of this stagnation pressure table revolves and is equipped with a pressure-regulating valve, in order to control the compressed air pressure entering stagnation pressure table, the tail end of this pressure-regulating valve is then socketed a pressure pipe joint, and another air hole of this four-way connection then revolves and is equipped with a valve switch again; And an air hole of the four-way connection of this dividing potential drop table also revolves and is equipped with a valve switch, and another air hole of this four-way connection then also revolves and is equipped with a valve switch, to control the pressurized air be filled with in measured object to release.There is processing ease, certain, interpretation is clear and definite, and be suitable for characteristic applied widely such as greatly any/small containers or each branch pipeline etc.But the leak detecting device volume ratio of this type is comparatively large, carrying or mobile inconvenient.
Utility model content
For the problems referred to above, the utility model provides a kind of hand-held leak detecting device, to solve comparatively large, the mobile inconvenient problem of leak detecting device volume of the prior art.
To achieve these goals, the technical solution of the utility model is as follows:
Hand-held leak detecting device, it is characterized in that, comprise hand-held housing, pneumatic valve body is provided with in described hand-held housing, pneumatic circuit is provided with in pneumatic valve body, the import and export place of pneumatic circuit is respectively arranged with inlet union and outlet connection, and a pressure transducer is connected with described pneumatic circuit, and described pneumatic circuit is also provided with solenoid valve.
In a preferred embodiment of the present utility model, described pressure transducer, solenoid valve are all connected with a control module, and described control module is connected with user interface.
Further, described UI Preferences is on hand-held housing.
In a preferred embodiment of the present utility model, described pressure transducer is detachably connected on described pneumatic valve body.
In a preferred embodiment of the present utility model, described pressure transducer is connected to the tested part linkage section of pneumatic circuit.
Because little volume parts is inflated without the need to large discharge pneumatic circuit, adopt small-size hand-hold housing design and small switch solenoid valve, the putting position reducing mechanical part size to greatest extent and realize test pressure transducer as far as possible near tested part, to obtain more accurately and test result fast.
Pressure transducer of the present utility model adopts changeable type design, can adapt to the test request of different pressures range.
The detailed description and obtaining that feature of the present utility model can consult the graphic and following better embodiment of this case is well understood to.
Accompanying drawing explanation
Fig. 1 is exploded perspective view of the present utility model.
Fig. 2 is the schematic diagram of pneumatic valve body.
Fig. 3 is theory diagram of the present utility model.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, setting forth the utility model further below in conjunction with specific embodiment.
See Fig. 1 and 2, hand-held leak detecting device, comprise hand-held housing 10, hand-held housing 10 comprises upper and lower casing, pneumatic valve body 20 is provided with in hand-held housing, be provided with pneumatic circuit 21 in pneumatic valve body, the import and export place of pneumatic circuit is respectively arranged with inlet union 22 and outlet connection 23.One pressure transducer 30 is connected to the tested part linkage section of pneumatic circuit.Pressure transducer is detachably connected on described pneumatic valve body.Pneumatic circuit is also provided with solenoid valve 40.
Pressure transducer 30, solenoid valve 40 are all connected with a control module, and control module is connected with user interface.UI Preferences is on hand-held housing 10.
The utility model adopts hand-held housing, is of a size of long 150mm wide 85mm height 35mm(not containing lug boss), volume is about several cubic metres that 447cm3 compares specialized equipment, possesses and is easy to carry and the feature low to installation environment requirement.
The utility model adopts high-precision pressure sensor and treatment circuit collocation, to test request optimizing process control software, can adapt to the testing requirement of multiple requirement.The pressure transducer that the utility model adopts is-1000mbar-500mbar, and precision is 0.2%reading+1hPa.
Can use outside controlled gas source feed, due to can according to the shape of the tested part of tested part situation flexible adaptation, test mode, this device can adapt to multiple test by independent assortment.Such as: the water resistance test of miniaturized electronics, the potting test etc. of part.
Testing process:
Before starting test, carry out every test parameter setting, as: the test duration, pressure limit, certified products judge scope.
1, the auto zero of instrument is carried out
2, press beginning key to start to inflate tested part
3, when pressure arrives test pressure, unclamp beginning key, instrument starts to leak hunting automatically
A, outside pressure regulator valve controlled pressure can be selected
The automatic control objectives force value of B, optional the machine (automatically stopping inflation when pressure arrives target setting value)
4, after the test duration through presetting, pressure condition during instrument display end of test, and judge that scope compares with certified products, do good/bad judgement.
This device to possess precision high, while miniaturization and the feature such as simple to operate, can also require customized pressure range according to different test pressures, believe and can play good supplementing and substitution effect to large-scale specialized equipment leaking hunting in industry.
More than show and describe ultimate principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; the just principle of the present utility model described in above-described embodiment and instructions; under the prerequisite not departing from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall in claimed scope of the present utility model.The protection domain that the utility model requires is defined by appending claims and equivalent thereof.
Claims (5)
1. hand-held leak detecting device, it is characterized in that, comprise hand-held housing, pneumatic valve body is provided with in described hand-held housing, pneumatic circuit is provided with in pneumatic valve body, the import and export place of pneumatic circuit is respectively arranged with inlet union and outlet connection, and a pressure transducer is connected with described pneumatic circuit, and described pneumatic circuit is also provided with solenoid valve.
2. hand-held leak detecting device according to claim 1, is characterized in that, described pressure transducer, solenoid valve are all connected with a control module, and described control module is connected with user interface.
3. hand-held leak detecting device according to claim 2, is characterized in that, described UI Preferences is on hand-held housing.
4. hand-held leak detecting device according to claim 1, is characterized in that, described pressure transducer is detachably connected on described pneumatic valve body.
5. hand-held leak detecting device according to claim 1, is characterized in that, described pressure transducer is connected to the tested part linkage section of pneumatic circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420830915.0U CN204314030U (en) | 2014-12-24 | 2014-12-24 | Hand-held leak detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420830915.0U CN204314030U (en) | 2014-12-24 | 2014-12-24 | Hand-held leak detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204314030U true CN204314030U (en) | 2015-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420830915.0U Active CN204314030U (en) | 2014-12-24 | 2014-12-24 | Hand-held leak detecting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136405A (en) * | 2015-07-20 | 2015-12-09 | 合肥众沃仪器技术有限公司 | Portable smoking machine suction mechanism leak detector |
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2014
- 2014-12-24 CN CN201420830915.0U patent/CN204314030U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136405A (en) * | 2015-07-20 | 2015-12-09 | 合肥众沃仪器技术有限公司 | Portable smoking machine suction mechanism leak detector |
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| GR01 | Patent grant |