CN201637553U - Device for detecting air tightness - Google Patents
Device for detecting air tightness Download PDFInfo
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- CN201637553U CN201637553U CN2010201145081U CN201020114508U CN201637553U CN 201637553 U CN201637553 U CN 201637553U CN 2010201145081 U CN2010201145081 U CN 2010201145081U CN 201020114508 U CN201020114508 U CN 201020114508U CN 201637553 U CN201637553 U CN 201637553U
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- air
- operation valve
- detection device
- tightness detection
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Abstract
The utility model provides a device for detecting air tightness, belonging to the technical filed of the detection, which solves the problems that the existing method for detecting the air tightness has low efficiency and inaccurate detection. The device for detecting the air tightness comprises an air source, a control system, and a detection chamber with an air inlet and an air outlet, wherein the detection chamber is provided with a detector which is used for detecting magnitude of the pressure in the detection chamber and feeding back the magnitude of the pressure to the control system, the air inlet of the detection chamber is connected with a control valve I in serials through a pipeline and then is communicated with the air source, similarly, the air outlet of the detection chamber is connected with a control valve II in serials through a pipeline and then is communicated with the part to be detected the tightness, of a piece to be detected, and the control system is used for controlling the opening and closing of the control valve I and the control valve II. The device for detecting the air tightness has the advantages of high detection efficiency, accurate detection result, high automatic degree, and the like.
Description
Technical field
The utility model belongs to the detection technique field, relates to a kind of checkout equipment of product, more particularly, relates to a kind of bubble-tight pick-up unit of testing product that is used for.
Background technology
In the prior art, usually need all that the product that has impermeability to require is carried out impermeability and detect, with determine whether it leaks gas, leakage etc., and then determine whether it qualified, make every effort to the undesirable product of impermeability is detected in advance, avoid when installing or use, causing quality accident.
Traditional detection method all is with seal the import and export of product to be stopped up usually, immerse again in the water, with the mode of artificial naked eyes observe its whether bubbling and the bubble of being emerged how much, thereby judge whether it is specification product.
The not enough main following points of this mode: 1, waste water resource, consume a large amount of water; 2, accuracy is not high, judges with operator's experience whether it is qualified entirely, needs operator's multi-angle to observe sometimes, is easy to generate and fails to judge; So, usually unacceptable product is regarded as also that certified products use or with certified products regard as unacceptable product need not, thereby influence product quality and output; 3, the unified criterion of neither one, it is too big influenced by human factor; Even to identical product, different operators' testing result is probably different; 4, operator's labour intensity is big, production efficiency is low.
Also having a kind of method is to pour into water or kerosene etc. to the sealing of product part to be measured, observe its within a certain period of time the water of seepage or kerosene drip number, whether qualified with this sealing of judging product, this method exists inefficient shortcoming equally.
And comparatively advanced at present detection method is to use atmospheric control that pressure gas is input in the test specimen, automatically shuts down source of inflation gas then.Whether qualified the pressure of part to be measured under sealing state that detects test specimen changes whether surpass predetermined value, obtain sealing the result of determination of product to be measured thus.As a kind of checkout equipment and detection method (its publication number is CN101191754A) that is used for the testing product sealing that Chinese patent provided, this checkout equipment comprises seal, path, solenoid valve, pick-up unit and control device, control device is used for the switching of control electromagnetic valve, the pressure detection result that reception is sent by pick-up unit, whether qualified whether surpass reservation threshold, obtain sealing the result of determination of product to be measured thus if determining in the predetermined amount of time inner gateway that the pressure under the sealing state changes.
But, this detection mode still has weak point, most products is in particular in: owing to more or less all can exist the problem of sealing, when pressurized air when charging into, can exist while inflating the situation of leaking gas, cause the interior gaseous tension instability of product of input, the accuracy that influence detects.
Summary of the invention
The purpose of this utility model is at the existing the problems referred to above of existing air-tightness detection device, and has proposed a kind of detected gas that steady pressure is provided, and improves the air-tightness detection device of detection accuracy.
The purpose of this utility model can realize by following technical proposal: a kind of air-tightness detection device, comprise source of the gas and control system, it is characterized in that, described pick-up unit also includes a sensing chamber with air intake opening and gas outlet, sensing chamber is provided with detecting device, this detecting device is used to detect sensing chamber's internal pressure size and feeds back to control system, the air intake opening of described sensing chamber is connected in series an operation valve one back by pipeline and is communicated with source of the gas, the gas outlet of sensing chamber is connected in series an operation valve two backs by pipeline equally and is communicated with to be measured sealing part to be measured, and above-mentioned control system is used to control the switching of described operation valve one and operation valve two.
During inflation, under the control of control system, operation valve one is opened, and operation valve two is closed.Source of the gas charges into pressure gas by pipeline and operation valve one in sensing chamber, when the pressure in the sensing chamber reached setting value, control system control operation valve one was closed, and operation valve two is opened, and sensing chamber is communicated with to be measured sealing part to be measured.Control system then judges according to sensing chamber's pressure decline degree of detecting device feedback whether to be measured the sealing property of sealing part to be measured is qualified.
In above-mentioned a kind of air-tightness detection device, described control system comprises central processing unit and is connected control module, setting module, timing module and display on the central processing unit, control module is connected with operation valve two with above-mentioned operation valve one, and central processing unit is connected with above-mentioned detecting device.
But setting module set pressure upper limit P1 (original pressure after sensing chamber's inflation), low pressure limit P2 and leak time T.Timing module carries out timing to leak time, reach the leak time T of initial setting when timing after, if the pressure value in the sensing chamber that receives of central processing unit judges promptly that also greater than the low pressure limit P2 of initial setting product is qualified; If the pressure in the sensing chamber, is judged promptly that product is defective less than the low pressure limit P2 of initial setting and is stopped test.The system log (SYSLOG) test result, and in real time by display reflection pressure drop and time curve.
In above-mentioned a kind of air-tightness detection device, described detecting device is a pressure transducer.
In above-mentioned a kind of air-tightness detection device, also be provided with an air release on the pipeline between the described sealing part to be measured that is used to be communicated with operation valve two and to be measured, described air release is connected with above-mentioned control module.After a product test finishes, because the pipeline internal gas pressure between operation valve two and the measured piece is higher, can cause the gases at high pressure ejection if take off test products immediately, cause security incident.Therefore at this air release is set, the gases at high pressure in the pipeline is discharged take off product more earlier.
In above-mentioned a kind of air-tightness detection device, described operation valve one and operation valve two are solenoid valve.
In above-mentioned a kind of air-tightness detection device, described air-tightness detection device also includes worktable, and worktable is provided with and is used for fixing to be measured fixed mechanism.
In above-mentioned a kind of air-tightness detection device, described fixed mechanism is anchor clamps.
In above-mentioned a kind of air-tightness detection device, described source of the gas is an air compressor.
Compared with prior art, this air-tightness detection device is preset a sensing chamber, and the preliminary filling gas by sensing chamber provides a stable detected air pressure, reflects the sealing property of product simultaneously by the variation of sensing chamber's internal pressure, and it is more accurate to detect.Many set detecting devices can a public source of the gas air feed, and does not influence each other mutually between each set detecting device, has improved work efficiency, has reduced cost.
Description of drawings
Fig. 1 is the principle schematic of this air-tightness detection device.
Fig. 2 is the functional-block diagram of control system in this air-tightness detection device.
Among the figure, 1, sensing chamber; 2, detecting device; 3, pipeline; 4, operation valve one; 5, source of the gas; 6, operation valve two; 7, to be measured; 8, air release; 9, worktable; 10, anchor clamps; 11, operation valve three.
Embodiment
Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
As shown in Figure 1, this air-tightness detection device comprises source of the gas 5, control system and the container one as sensing chamber 1, and container one has air intake opening and gas outlet, and container one is provided with detecting device 2.The air intake opening of container one is communicated with source of the gas 5 by pipeline 3 serial connection operation valves one 4 backs, the gas outlet of container one is serially connected with operation valve 26 back by pipeline 3 equally and is communicated with to be measured 7 sealing part to be measured, also is provided with air release 8 on the pipeline 3 between operation valve 26 and to be measured 7.Be placed on for to be measured 7 on the worktable 9, and be fixed on the worktable 9 by anchor clamps 10.In the present embodiment, described detecting device 2 is a pressure transducer, and source of the gas 5 is an air compressor of the prior art, and operation valve 1 and operation valve 26 are solenoid valve.
As shown in Figure 2, control system comprises central processing unit and is connected control module, setting module, timing module and display on the central processing unit, control module is connected with above-mentioned operation valve 1, operation valve 26 and air release 8, and central processing unit is connected with above-mentioned detecting device 2.
Before the test, at first import every primary data by setting module, setting module can wait by guidance panel and realize, the primary data of input comprises upper pressure limit P1 (original pressure after sensing chamber's 1 inflation), low pressure limit P2 and leak time T.And to be measured 7 be fixedly mounted on the worktable 9, the pipeline 3 that connects container one gas outlet is communicated with to be measured 7 sealing part to be measured, in the present embodiment, to be measured 7 is air valve, and the one-way sealing of air valve is tested.
When beginning to test, central processing unit is opened by control module control operation valve 1, and operation valve 26 is closed, and source of the gas 5 charges into pressure gas toward container one in, and the detecting device 2 on the container one pressure in the detection receptacle one constantly is big or small and feed back to central processing unit.When the pressure size in the container one reaches the upper pressure limit P1 of setting by the time (can according to actual conditions adjustment, compensation), control operation valve 1 is closed, operation valve 26 is opened, to be measured 7 sealing part to be measured is communicated with container one, this moment, container one interior pressure began to descend, and timing module picks up counting simultaneously.Reach the leak time T of initial setting when the timing module timing time after, if this moment the container one that receives of central processing unit pressure value greater than the low pressure limit P2 of initial setting, judge that then this product is certified products; If in leak time T, the pressure in the container one judges promptly that less than low pressure limit P2 product is unacceptable product and stops test.The central processing unit logging test results, and reflect pressure drop and time curve by display in real time.
After test was finished, operation valve 26 was closed and air release 8 is opened and exits, and can take off test products after venting is finished.
In order to save cost and increasing work efficiency, two set detecting devices can be connected to jointly on the source of the gas 5, as shown in Figure 1, only need control the switching relation of operation valve 1 and operation valve 3 11 well, just can make between two set detecting devices to be independent of each other.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (8)
1. air-tightness detection device, comprise source of the gas (5) and control system, it is characterized in that, described pick-up unit also includes a sensing chamber (1) with air intake opening and gas outlet, sensing chamber (1) is provided with detecting device (2), this detecting device (2) is used to detect sensing chamber (1) internal pressure size and feeds back to control system, the air intake opening of described sensing chamber (1) is communicated with source of the gas (5) by pipeline (3) serial connection one operation valve one (4) back, the gas outlet of sensing chamber (1) is communicated with the sealing of to be measured (7) part to be measured by pipeline (3) serial connection one operation valve two (6) backs equally, and above-mentioned control system is used to control the switching of described operation valve one (4) and operation valve two (6).
2. a kind of air-tightness detection device according to claim 1, it is characterized in that, described control system comprises central processing unit and is connected control module, setting module, timing module and display on the central processing unit, control module is connected with operation valve two (6) with above-mentioned operation valve one (4), and central processing unit is connected with above-mentioned detecting device (2).
3. a kind of air-tightness detection device according to claim 1 and 2 is characterized in that, described detecting device (2) is a pressure transducer.
4. a kind of air-tightness detection device according to claim 1 and 2, it is characterized in that, also be provided with an air release (8) on the pipeline (3) between the described sealing part to be measured that is used to be communicated with operation valve two (6) and to be measured (7), described air release (8) is connected with above-mentioned control module.
5. a kind of air-tightness detection device according to claim 1 and 2 is characterized in that, described operation valve one (4) and operation valve two (6) are solenoid valve.
6. a kind of air-tightness detection device according to claim 1 and 2 is characterized in that, described air-tightness detection device also includes worktable (9), and worktable (9) is provided with the fixed mechanism that is used for fixing to be measured (7).
7. a kind of air-tightness detection device according to claim 6 is characterized in that, described fixed mechanism is anchor clamps (10).
8. a kind of air-tightness detection device according to claim 1 and 2 is characterized in that, described source of the gas (5) is an air compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201145081U CN201637553U (en) | 2010-01-20 | 2010-01-20 | Device for detecting air tightness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201145081U CN201637553U (en) | 2010-01-20 | 2010-01-20 | Device for detecting air tightness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201637553U true CN201637553U (en) | 2010-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201145081U Expired - Lifetime CN201637553U (en) | 2010-01-20 | 2010-01-20 | Device for detecting air tightness |
Country Status (1)
| Country | Link |
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| CN (1) | CN201637553U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519682A (en) * | 2011-10-27 | 2012-06-27 | 天瀚科技(吴江)有限公司 | GPS (Global Position System) module watertightness testing device |
-
2010
- 2010-01-20 CN CN2010201145081U patent/CN201637553U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519682A (en) * | 2011-10-27 | 2012-06-27 | 天瀚科技(吴江)有限公司 | GPS (Global Position System) module watertightness testing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 317608 Zhejiang Taizhou Yuhuan Yuhuan Economic Development Zone, Xuan Men industrial city Patentee after: Taizhou ring world Polytron Technologies Inc Address before: 317600 518 City Road, Yucheng Street office, Yuhuan County, Zhejiang Patentee before: Taizhou Huantian Machinery Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101117 |
|
| CX01 | Expiry of patent term |