CN205483455U - Sealing test system - Google Patents
Sealing test system Download PDFInfo
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- CN205483455U CN205483455U CN201620062008.5U CN201620062008U CN205483455U CN 205483455 U CN205483455 U CN 205483455U CN 201620062008 U CN201620062008 U CN 201620062008U CN 205483455 U CN205483455 U CN 205483455U
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- vacuum
- differential pressure
- test system
- pressure sensor
- detection
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Abstract
The utility model discloses a sealing test system plants, including sealed container, evacuating device, detection device, PLC controller, sealed container has one and detects cavity and standard cavity, detect the cavity through first vacuum isolating valve with standard cavity intercommunication, evacuating device pass through second vacuum isolating valve with detection cavity intercommunication, detection device sets up in the sealed container, be used for detecting vacuum value in the sealed container, evacuating device detection device's signal end with PLC controller electricity is connected. Compared with the prior art, the utility model provides a sealing test system simple structure, easy and simple to handle, testing speed is fast, the test precision is high, can be accurate reach the leakage value.
Description
Technical field
This utility model belongs to food, medical packaging sealing propertytest field, is specifically related to a kind of sealing
Test system and tightness testing method.
Background technology
The sealing propertytest of medicine is always in a kind of ambiguous shape in pharmacy procedure at present
State, has and thoroughly believes packaging No leakage or leakage is directly ignored in allowed band, and this is not inconsistent
Close the national quality management regulation of GMP defined, medicine is used the very big hidden danger of security presence；More
Many is then to use the most ancient Microbial Challenge method, utilizes microorganism to invade medicine to be checked thus surveys
The qualification of reagent product, the shallowness of the method is long for the detection time cycle, and the detection to medicine to be checked
Cause irreversible destruction, there is no precision data, asked by the accuracy of/failure testing result
Topic.
Utility model content
This utility model provides a kind of sealing test system and tightness testing method, it is therefore intended that solve
Problems of the prior art, it is provided that a kind of detect that the cycle is short, speed fast, detection accurate data
Sealing test system and method for testing.
For achieving the above object, this utility model embodiment provides a kind of sealing test system, including
Hermetic container, vacuum extractor, detection device, PLC, described hermetic container has an inspection
Surveying chamber and standard chamber, described detection chambers is by the first vacuum isolating valve with described standard chamber even
Logical, described vacuum extractor is connected with described detection chambers by the second vacuum isolating valve, described detection
Device is arranged in described hermetic container, is used for detecting vacuum values in described hermetic container, described in take out true
Empty device, the signal end of described detection device electrically connect with described PLC.
In technique scheme, connect the detection in described hermetic container by the first vacuum isolating valve
Chamber and standard chamber, standard chamber is by the second vacuum isolating valve connection vacuum extractor, detection dress
Put and be arranged in detection chambers and standard chamber, and and electrically connect with PLC so that true taking out
After sky, cut off two identical airtight vacuums of initial vacuum value by first, second vacuum isolating valve
Cavity, after keeping a period of time, PLC draws the pressure difference of standard chamber and detection chambers,
Such that it is able to conveniently draw the leakage situation of detection article, it is to avoid article to be detected are broken
Bad, it is ensured that article to be detected after testing after integrity, and may be repeated detection, in order to will
Not by the product reperformance test of detection, obtain leak data the most accurately.
Further, described detection device includes that little differential pressure sensor, vacuum film are advised, described elementary errors
Pressure sensor has positive and negative end, and described little differential pressure sensor negative terminal, described vacuum film rule are arranged on
In described standard chamber, described little differential pressure sensor anode is arranged in described detection chambers, differential pressure
Sensor, vacuum film rule signal output part all electrically connects with described PLC.
In technique scheme, by using little differential pressure sensor, it is greatly improved being leaked out
Gas sensitization degree；Have employed vacuum film rule, improve the degree of accuracy of vacuum values so that I
Detect the small opening of 5 microns, meanwhile, vacuum film rule can be set according to the different medicine property of medicine and be wanted
The vacuum reached is to adjust the precision of test.
Further, described sealing test system also includes a display device, described display device with
Described PLC electrically connects, for showing the rule detection of described little differential pressure sensor, vacuum film
Pressure history in numerical value and the drawn out detection chambers of described PLC and standard chamber.
Further, described vacuum extractor includes the first vacuum pump, the second vacuum pump, the 3rd vacuum
Pump, described first vacuum pump, the second vacuum pump, the 3rd vacuum pump be sequentially connected in series connection, and described first
Vacuum pump is connected with described second vacuum isolating valve.By using three vacuum pumps being sequentially connected in series
To sealing test system evacuation, can effectively improve evacuation efficiency, and meet fine vacuum demand.
This utility model also provides for a kind of utilizing the close of sealing test system test product described above
The tightness testing method of envelope degree, comprises the following steps:
S1, medicine to be detected is placed in detection chambers, closes detection chambers door, open described the
One vacuum isolating valve, the second vacuum isolating valve, vacuum extractor carries out evacuation to hermetic container；
S2, after in hermetic container, vacuum values reaches preset value, close successively the second vacuum isolating valve,
First vacuum isolating valve, described detection device detects and records the initial vacuum value in now hermetic container
For P；
S3, holding certain time interval T, described detection device detects and records in T time hermetic container
Vacuum values is P'；
S4, by described initial vacuum value P compared with keeping described vacuum values P' that records after T time
Relatively, show that the differential pressure value between P and P' is Δ P', if, Δ P' be on the occasion of time, then detection chambers is described
Interior detected medicine has leakage.
Further, in above-mentioned S2, described detection device includes that little differential pressure sensor, vacuum are thin
Film is advised, and described little differential pressure sensor has a positive and negative end, described little differential pressure sensor negative terminal, described very
Empty thin film rule are arranged in described standard chamber, and described little differential pressure sensor anode is arranged on described detection
In chamber；
The initial vacuum value that described vacuum film rule are detected in described standard chamber is P2, through T
After between, the rule detection of described vacuum film the standard vacuum value recorded in standard chamber described in T time are
P1, the differential pressure value Δ P1 between described P1 and P2 are then the leakage value of standard vacuum；
The initial vacuum value that described little differential pressure sensor detects in described detection chambers is P4, through T
After time, described little differential pressure sensor detects and records vacuum values during T time in described detection chambers
It is then the leakage value of detection chambers for P3, the differential pressure value Δ P2 between described P3 and P4；Described inspection
Difference DELTA P surveying the leakage value Δ P2 of chamber and the leakage value Δ P1 of described standard vacuum is detection medicine
Leakage value.
This utility model has the beneficial effect that:
1, highly sensitive: owing to system with the addition of little differential pressure sensor, it is greatly improved medicine institute
The gas sensitization degree leaked out, vacuum film rule are also more than common vacuum transducer, for very simultaneously
The accuracy of null value is the most accurate so that the small opening that vacuum detection instrument minimum detectable is 5 microns.
2, detection sensitivity is adjustable: setting vacuum film rule according to the different medicine property of medicine to reach
To vacuum adjust the precision of test.
3, it is lossless, repetition to medicine: vacuum test will not destroy the property of medicine of medicine, does not leads to
The medicine of test is repeatable to be entered test again and obtains leak data the most accurately.
4, the detection time is short: the detection time of single product to be detected is within the 0-30 second.
Compared with prior art, sealing test system structure provided by the utility model is simple, operation
Simplicity, test period is short, test speed is fast, accurate testing degree high, can draw leakage value accurately.
Accompanying drawing explanation
The structural representation of a kind of sealing test system that Fig. 1 provides for this utility model embodiment；
The flow chart of a kind of tightness testing method that Fig. 2 provides for this utility model embodiment；
In figure, 1-standard chamber, 2-detection chambers, 3-vacuum extractor, 4-the first vacuum isolating valve,
5-the second vacuum isolating valve, 6-detects device, and 61-vacuum film is advised, 62-little differential pressure sensor.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage of greater clarity, below in conjunction with tool
Body embodiment referring to the drawings, further describes this utility model.It should be understood that these
Describe the most exemplary, and be not intended to limit scope of the present utility model.Additionally, in following description
In, eliminate the description to known features and technology, of the present utility model to avoid unnecessarily obscuring
Concept.
Embodiment
As it is shown in figure 1, this utility model embodiment provides a kind of sealing test system, including airtight
Container, vacuum extractor 3, detection device 6, PLC (not shown) are described airtight
Container has a detection chambers 2 and standard chamber 1, and described detection chambers 2 is by the first vacuum separation
Valve 4 connects with described standard chamber 1, described vacuum extractor 3 by the second vacuum isolating valve 5 with
Described standard chamber connects, in the present embodiment, it is preferred that described vacuum extractor 3 includes that first is true
Empty pump, the second vacuum pump, the 3rd vacuum pump, described first vacuum pump, the second vacuum pump, the 3rd true
Empty pump is sequentially connected in series connection, and described first vacuum pump is connected with described second vacuum isolating valve 5；Pass through
Use three vacuum pumps being sequentially connected in series to sealing test system evacuation, can effectively improve and take out
Vacuum efficiency, and meet fine vacuum demand.
Described detection device 6 is arranged in described hermetic container, true in being used for detecting described hermetic container
Null value, in the present embodiment, described detection device 6 includes that little differential pressure sensor 62, vacuum film are advised
61, described little differential pressure sensor 62 has positive and negative end, the negative terminal of described little differential pressure sensor 62,
Described vacuum film rule 61 are arranged in described standard chamber 1, and described little differential pressure sensor 62 is just
End is arranged in described detection chambers 2, the letter of described little differential pressure sensor 62, vacuum film rule 61
Number outfan all electrically connects with described PLC, and the signal end of described vacuum extractor 3 is with described
PLC electrically connects.
Described sealing test system also includes a display device (not shown), described display device
Electrically connect with described PLC, be used for showing that described little differential pressure sensor 62, vacuum film are advised
In 61 numerical value detected and the drawn out detection chambers of described PLC 2 and standard chamber 1
Pressure history.
As in figure 2 it is shown, this utility model also provides for a kind of utilizing sealing test system described above to survey
The tightness testing method of the seal degree of trial product, comprises the following steps:
S1, medicine to be detected is placed in detection chambers, closes detection chambers door, open described the
One vacuum isolating valve, the second vacuum isolating valve, vacuum extractor carries out evacuation to hermetic container；
S2, after in hermetic container, vacuum values reaches preset value, close successively the second vacuum isolating valve,
First vacuum isolating valve, described detection device detects and records the initial vacuum value in now hermetic container
For P；
S3, holding certain time interval T, described detection device detects and records in T time hermetic container
Vacuum values is P'；
S4, by described initial vacuum value P compared with keeping described vacuum values P' that records after T time
Relatively, show that the differential pressure value between P and P' is Δ P', if, Δ P' be on the occasion of time, then detection chambers is described
Interior detected medicine has leakage.
Operation principle of the present utility model is as follows:
Medicine to be detected is placed in detection chambers, closes detection chambers door, open described first true
Empty isolating valve, the second vacuum isolating valve, vacuum extractor carries out evacuation to hermetic container, treats airtight
After vacuum values reaches preset value in container, close the second vacuum isolating valve, the first vacuum isolating valve successively,
The initial vacuum value that described vacuum film rule are detected in described standard chamber is P2, after T time,
Described vacuum film rule are detected and recorded the standard vacuum value in standard chamber described in T time is P1,
Differential pressure value Δ P1 between described P1 and P2 is then the leakage value of standard vacuum；Described differential pressure senses
The initial vacuum value that device detects in described detection chambers is P4, after T time, and described differential pressure
It is P3 that sensor detects and record the vacuum values in described detection chambers during T time, described P3 and P4
Between differential pressure value Δ P2 be then the leakage value of detection chambers；Draw out detection chambers and standard chamber respectively
Indoor pressure history, obtains the slip of detection chambers；The leakage value Δ P2 of described detection chambers
With the leakage value that difference DELTA P of the leakage value Δ P1 of described standard vacuum is detection medicine.
It should be appreciated that above-mentioned detailed description of the invention of the present utility model is used only for exemplary illustration
Or explain principle of the present utility model, and do not constitute restriction of the present utility model.Therefore, the most inclined
Any modification, equivalent substitution and improvement etc. done in the case of spirit and scope of the present utility model,
Within should be included in protection domain of the present utility model.Additionally, this utility model claims
It is intended to fall into scope and border or this scope and the equivalents on border
In whole change and modifications example.
Claims (4)
1. a sealing test system, it is characterised in that include hermetic container, vacuum extractor, inspection
Surveying device, PLC, described hermetic container has a detection chambers and standard chamber, described inspection
Surveying chamber to be connected with described standard chamber by the first vacuum isolating valve, described vacuum extractor passes through the
Two vacuum isolating valves connect with described detection chambers, and described detection device is arranged on described hermetic container
In, it is used for detecting vacuum values in described hermetic container, described vacuum extractor, described detection device
Signal end electrically connects with described PLC.
Sealing test system the most according to claim 1, it is characterised in that described detection device
Including little differential pressure sensor, vacuum film rule, described little differential pressure sensor has positive and negative end, described
Little differential pressure sensor negative terminal, described vacuum film rule are arranged in described standard chamber, described differential pressure
Sensor anode is arranged in described detection chambers, the rule signal output of little differential pressure sensor, vacuum film
End all electrically connects with described PLC.
Sealing test system the most according to claim 2, it is characterised in that described sealing test
System also includes that a display device, described display device electrically connect with described PLC, is used for showing
Show that numerical value and the described PLC of the rule detection of described little differential pressure sensor, vacuum film are drawn out
Pressure history in detection chambers and standard chamber.
Sealing test system the most according to claim 1, it is characterised in that described vacuum means
Put and include the first vacuum pump, the second vacuum pump, the 3rd vacuum pump, described first vacuum pump, second true
Empty pump, the 3rd vacuum pump are sequentially connected in series connection, described first vacuum pump and described second vacuum isolating valve
Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620062008.5U CN205483455U (en) | 2016-01-22 | 2016-01-22 | Sealing test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620062008.5U CN205483455U (en) | 2016-01-22 | 2016-01-22 | Sealing test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205483455U true CN205483455U (en) | 2016-08-17 |
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ID=56639081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620062008.5U Active CN205483455U (en) | 2016-01-22 | 2016-01-22 | Sealing test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205483455U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699026A (en) * | 2016-01-22 | 2016-06-22 | 上海严复制药系统工程有限公司 | Sealing test system and method |
| CN113567071A (en) * | 2021-07-26 | 2021-10-29 | 湖南正中制药机械有限公司 | Rapid vacuum leak detection system and method |
-
2016
- 2016-01-22 CN CN201620062008.5U patent/CN205483455U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699026A (en) * | 2016-01-22 | 2016-06-22 | 上海严复制药系统工程有限公司 | Sealing test system and method |
| CN105699026B (en) * | 2016-01-22 | 2019-07-09 | 上海严复制药系统工程有限公司 | A kind of sealing test system and tightness testing method |
| CN113567071A (en) * | 2021-07-26 | 2021-10-29 | 湖南正中制药机械有限公司 | Rapid vacuum leak detection system and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |