CN203337345U - Air tightness detection device - Google Patents
Air tightness detection device Download PDFInfo
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- CN203337345U CN203337345U CN2013202651169U CN201320265116U CN203337345U CN 203337345 U CN203337345 U CN 203337345U CN 2013202651169 U CN2013202651169 U CN 2013202651169U CN 201320265116 U CN201320265116 U CN 201320265116U CN 203337345 U CN203337345 U CN 203337345U
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Abstract
The utility model relates to an air tightness detection device, comprising a vacuum pump and at least a pressure detection interface device. Each pressure detection interface device comprises an interface used to coordinate with a to-be-tested component in a sealing manner to form a sealed cavity. The interface is a storage space with an opening on an end. The pressure detection interface device is provided with an air inlet, an extraction opening, and a detection opening communicated with the interface. The air inlet is assembled with an inlet valve. The detection opening is provided with a pressure detector. The air inlet of each pressure detection interface device is connected with the vacuum pump through a pipeline. The pipeline is provided with a corresponding bleeder valve. The device solves problems that an existing air tightness detection device is low in detection efficiency and high in cost.
Description
Technical field
The utility model relates to a kind of air-tightness detection device.
Background technology
Along with social development, the kind of product also day by day increases, and security and the reliability of product also more and more come into one's own.For the product with sealing requirements as water tank, fuel tank, pressure vessel and the sealing shrouding of security requirement is arranged or capping etc. is carried out impermeability and is detected as for an important step, and how fast, efficiently, certain part of removing testing product or product easily is just aobvious extremely important.
Existing impermeability detection technique mainly contains three kinds:
First method is to be filled with the gas of setting pressure in the cavity of product to be checked, then product to be checked is put into to transparent liquid, then with the naked eye observes the sealing that the number whether Bubble formation or Bubble formation are arranged is judged product.This kind of method has following some deficiency: 1,, because of the characteristics of fixture and the product itself of needs special use, the volume of required liquid is often larger, is not easy to operation and use cost and maintenance cost higher; 2, this kind of method is affected by human factors larger; 3, easily produce erroneous judgement or fail to judge.
Second method is to filling liquid or colored liquid in the seal chamber of product, then the pressure of given restriction, observe within a certain period of time the liquid leaked out, whether the sealing of judging product with this is qualified, there is operation inconvenience in this kind of method, efficiency is low, for the not obvious deficiency that waits of micro-leakage.
The third method is to use atmospheric control that pressure gas is input in test specimen, then automatically shut down the inflation vacuum pump, whether the variable quantity of the pressure of the cavity to be measured of testing product under sealing state surpasses predetermined value, and whether the sealing of judging product according to this is qualified.This kind of method also belongs to the positive pressure method leak hunting method, and mainly there are two aspect problems in it, and one side is smaller for the pressure variation of the sealing place malleation of tiny leakage, and the Pressure Sensor Precision requirement that detects malleation is higher, and cost is also higher accordingly; Problem is certain part for most of test product or product on the other hand, and during detection, because existing malleation to need by special hold-down mechanism and snap-in force regulating device, this also can increase cost and affect detection efficiency.
The name that application number is 201020257649.9 is called in the patent documentation of " a kind of air-tightness detection device ", a kind of air-tightness detection device is disclosed, this device is by arranging vacuum pump, detected by the detection of negative pressure method, improved the accuracy detected, but this air-tightness detection device can only be detected a product at every turn, detection efficiency is low, if need to detect a plurality of products simultaneously, just need a plurality of pick-up units of configuration, cost is higher.
The utility model content
The purpose of this utility model is to provide a kind of air-tightness detection device, in order to solve the existing problem that the air-tightness detection device detection efficiency is low, cost is high.
For achieving the above object, scheme of the present utility model is: a kind of air-tightness detection device, comprise vacuum pump and at least one pressure detection interface arrangement, each pressure detection interface arrangement include one for to be measured be sealed and matched, form the interface of seal chamber, the accommodation space that this interface is an end opening, described pressure detection interface arrangement is provided with the air intake opening be connected with described interface, a bleeding point and a detection mouthful, be equipped with gas admittance valve on air intake opening, detect mouth and be provided with pressure detector, the air intake opening of each pressure detection interface arrangement all connects vacuum pump by pipeline, pipeline is provided with corresponding extraction valve.
Described pick-up unit also comprises the control system opened and closed for controlling gas admittance valve and extraction valve.
Described interface is provided with O-ring seal.
Described air intake opening communicates with atmosphere by described gas admittance valve.
Described gas admittance valve and extraction valve are solenoid valve.
The beneficial effect that the utility model reaches: air-tightness detection device of the present utility model can arrange many group pressure detection interface arrangements, each pressure detection interface arrangement connects a vacuum pump simultaneously, can be by the extraction valve of each pressure detection interface arrangement of control and the switching of gas admittance valve, make to be independent of each other between each group detection, to organize to be measured more and be detected simultaneously, increase work efficiency, cost-saving.
The accompanying drawing explanation
Fig. 1 is the principle schematic of the utility model air-tightness detection device;
Fig. 2 is the functional-block diagram of control system in the utility model air-tightness detection device;
Fig. 3 is an embodiment functional-block diagram of control system in the utility model air-tightness detection device.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in more detail.
As shown in Figure 1,1 is vacuum pump, and 2 is pipeline, and 3 is extraction valve, and 4 is interface, and 5 is to be measured, and 6 is pressure detector, and 7 is gas admittance valve.
The utility model comprises vacuum pump and at least one pressure detection interface arrangement, each pressure detection interface arrangement include one for to be measured be sealed and matched, form the interface of seal chamber, the accommodation space that this interface is an end opening, described pressure detection interface arrangement is provided with the air intake opening be connected with described interface, a bleeding point and a detection mouthful, be equipped with gas admittance valve on air intake opening, detect mouth and be provided with pressure detector, the air intake opening of each pressure detection interface arrangement all connects vacuum pump by pipeline, pipeline is provided with corresponding extraction valve.
As shown in Figure 2, control system of the present utility model comprises central processing unit, control module, setting parameter unit, display unit, timing unit and statistic unit, setting parameter unit, timing unit, display unit, control module and statistic unit are connected with central processing unit respectively, control module is for connecting extraction valve and gas admittance valve, for controlling the switching of extraction valve and gas admittance valve, central processing unit is for the Bonding pressure detecting device, pressure detector is for detection of the pressure size of interface, and feeds back to central processing unit.
In the present embodiment, pressure detector is the sensor for vacuum measurement, that is: regulate, extraction valve and gas admittance valve are solenoid valve, regulate by pipeline and be connected with the detection mouth of pressure detection interface arrangement, the air intake opening of pressure detection interface arrangement connects after gas admittance valve and connects with atmosphere by pipeline, and interface is provided with a seal chamber of O-ring seal formation with the composition surface between to be measured.As Fig. 3, regulate by vacuum meter and be connected to central processing unit, by regulating, metrical information is passed to vacuum meter, vacuum meter passes to central processing unit by the data after processing.
Before test, at first input every primary data by the setting parameter unit, the setting parameter unit can be realized by guidance panel, the primary data of input comprises low pressure limit P1, upper pressure limit P2, voltage rise time T, to be measured is placed on interface, make the position to be detected of to be measured corresponding with the opening of interface, on the composition surface to be measured with interface, O-ring seal is installed, form a seal chamber.
During test, central processing unit is opened by control unit controls extraction valve, controls gas admittance valve and closes, and starts vacuum pump, makes the vacuum pump running, and seal chamber is vacuumized.When the pressure in interface reaches low pressure limit P1, P1 can according to circumstances adjust, and controls extraction valve and closes.In the voltage rise time T allowed at timing unit, if the pressure numerical value in the seal chamber that central processing unit receives is less than voltage rise upper limit P2, judge that workpiece for measurement (5) is certified products; If T is in the time, the pressure numerical value in the seal chamber that central processing unit receives is greater than voltage rise upper limit P2, judge workpiece for measurement (5) as unacceptable product and stop test, and the central processing unit logging test results, and by display unit, show in real time.
After having tested, control system is controlled inlet open, and the seal chamber body is in communication with the outside, and after completing, can take off test block.
For cost-saving and increase work efficiency, a plurality of pressure detection interface arrangements can be connected to a vacuum pump jointly, as Fig. 1, only need to control the switching relation of extraction valve and gas admittance valve, just can make to be independent of each other between a plurality of pressure detection interface arrangements.
Specific embodiment described herein is only to illustrate of the present utility model.The utility model person of ordinary skill in the field can do various Revision and supplements to described specific embodiment, perhaps adopt similar mode to substitute, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (6)
1. an air-tightness detection device, it is characterized in that, comprise vacuum pump and at least one pressure detection interface arrangement, each pressure detection interface arrangement include one for to be measured be sealed and matched, form the interface of seal chamber, the accommodation space that this interface is an end opening, described pressure detection interface arrangement is provided with the air intake opening be connected with described interface, a bleeding point and a detection mouthful, be equipped with gas admittance valve on air intake opening, detect mouth and be provided with pressure detector, the air intake opening of each pressure detection interface arrangement all connects vacuum pump by pipeline, pipeline is provided with corresponding extraction valve.
2. air-tightness detection device according to claim 1, is characterized in that, described pick-up unit also comprises the control system opened and closed for controlling gas admittance valve and extraction valve.
3. air-tightness detection device according to claim 1, is characterized in that, described pressure detector is for regulating.
4. air-tightness detection device according to claim 3, is characterized in that, described interface is provided with O-ring seal.
5. air-tightness detection device according to claim 1, is characterized in that, described air intake opening communicates with atmosphere by described gas admittance valve.
6. air-tightness detection device according to claim 1, is characterized in that, described gas admittance valve and extraction valve are solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202651169U CN203337345U (en) | 2013-05-15 | 2013-05-15 | Air tightness detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202651169U CN203337345U (en) | 2013-05-15 | 2013-05-15 | Air tightness detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203337345U true CN203337345U (en) | 2013-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013202651169U Expired - Lifetime CN203337345U (en) | 2013-05-15 | 2013-05-15 | Air tightness detection device |
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| CN (1) | CN203337345U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105738042A (en) * | 2016-02-24 | 2016-07-06 | 河南平高电气股份有限公司 | Method of detecting shell waterproof performance and spraying device of implementing same |
| CN106092463A (en) * | 2016-05-31 | 2016-11-09 | 中国航空工业集团公司西安飞机设计研究所 | A kind of airtight inspection method of aircraft vacuum waste water systems |
| CN106840541A (en) * | 2016-12-14 | 2017-06-13 | 国网福建省电力有限公司 | A kind of SF6Equipment vacuumizes automatic leak detection system and method |
| CN109425471A (en) * | 2017-08-29 | 2019-03-05 | 内蒙古伊利实业集团股份有限公司 | Device for detecting sealability and method |
| CN112556921A (en) * | 2020-11-09 | 2021-03-26 | 季华实验室 | Vacuum detection device for multi-joint and vacuum detection method for film gauge |
| CN112683466A (en) * | 2020-11-20 | 2021-04-20 | 上海东富龙爱瑞思科技有限公司 | Quick transfer valve leak hunting device |
| CN112834130A (en) * | 2020-12-31 | 2021-05-25 | 湖北诚胜测控科技有限公司 | High pressure and vacuum circuit leakproofness testing arrangement |
-
2013
- 2013-05-15 CN CN2013202651169U patent/CN203337345U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105738042A (en) * | 2016-02-24 | 2016-07-06 | 河南平高电气股份有限公司 | Method of detecting shell waterproof performance and spraying device of implementing same |
| CN106092463A (en) * | 2016-05-31 | 2016-11-09 | 中国航空工业集团公司西安飞机设计研究所 | A kind of airtight inspection method of aircraft vacuum waste water systems |
| CN106840541A (en) * | 2016-12-14 | 2017-06-13 | 国网福建省电力有限公司 | A kind of SF6Equipment vacuumizes automatic leak detection system and method |
| CN109425471A (en) * | 2017-08-29 | 2019-03-05 | 内蒙古伊利实业集团股份有限公司 | Device for detecting sealability and method |
| CN112556921A (en) * | 2020-11-09 | 2021-03-26 | 季华实验室 | Vacuum detection device for multi-joint and vacuum detection method for film gauge |
| CN112683466A (en) * | 2020-11-20 | 2021-04-20 | 上海东富龙爱瑞思科技有限公司 | Quick transfer valve leak hunting device |
| CN112834130A (en) * | 2020-12-31 | 2021-05-25 | 湖北诚胜测控科技有限公司 | High pressure and vacuum circuit leakproofness testing arrangement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211231 Address after: No.1 Jiangdong Avenue, Jintan District, Changzhou City, Jiangsu Province Patentee after: Zhongchuangxin Aviation Technology Co.,Ltd. Address before: No.66, Binhe North Road, high tech Development Zone, Luoyang City, Henan Province Patentee before: CHINA AVIATION LITHIUM BATTERY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131211 |