CN2796825Y - Vacuum experiment container and its vacuum pumping device - Google Patents
Vacuum experiment container and its vacuum pumping device Download PDFInfo
- Publication number
- CN2796825Y CN2796825Y CN 200520051200 CN200520051200U CN2796825Y CN 2796825 Y CN2796825 Y CN 2796825Y CN 200520051200 CN200520051200 CN 200520051200 CN 200520051200 U CN200520051200 U CN 200520051200U CN 2796825 Y CN2796825 Y CN 2796825Y
- Authority
- CN
- China
- Prior art keywords
- vacuum
- valve seat
- test container
- sealing ring
- detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a vacuum test container. A valve core (6) which is outwards sealed is arranged in a valve seat (2). A spring (4) is arranged between another end of the valve core (6) and the valve seat (2). The elasticity of the spring (4) is greater than the pressure of atmospheric pressure. A thread (3) is also arranged on the outer circle of the valve seat (2). The utility model also discloses a vacuum pumping device which is used for carrying out vacuum pumping of the vacuum test container and carrying out the detection of a vacuum degree and the detection of a sealing condition. The utility model relates to the vacuum test container which still keeps sealed when the negative pressure of the vacuum test container is changed into positive pressure. The vacuum pumping, the detection of the vacuum degree and the detection of the sealing condition of the vacuum test container are carried out by the vacuum pumping device. The vacuum pumping device has simple structure, and stable and reliable performance.
Description
Technical field
The utility model relates to a kind of vacuum test container, and the utility model also relates to a kind of apparatus for vacuum producing that is used to aspirate this vacuum test container vacuum.
Background technology
In some tests (as the quick-fried heat test of propellant powder), test chamber must be evacuated (negative pressure) before the test, sample burning in the test, and container changes malleation rapidly into.And before and after general calorimetric test chamber (oxygen bomb) test, being in malleation in the body always, under the negative pressure condition, oxygen bomb can not seal.And the vacuum test container adopts specially designed valve core structure, can all can keep sealing in malleation and negative pressure condition.
The utility model content
Technical problem to be solved in the utility model provides a kind of vacuum test container that still keeps sealing and can detect sealing condition when container changes malleation into by negative pressure.
Another technical problem to be solved in the utility model provides a kind ofly carries out vacuum drawn to this vacuum test container, carries out the apparatus for vacuum producing of the detection of the detection of vacuum and sealing situation.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of vacuum test container, comprise body and air valve, in described air valve, be provided with spool to external seal, the end that described spool is corresponding with described air valve inlet is provided with sealing ring, be provided with spring between the described spool other end and the described air valve valve seat, described spring force is greater than atmospheric pressure; On described valve seat cylindrical, also be provided with screw thread.
In order to carry out vacuum drawn for this vacuum test container, carry out the detection of vacuum and the detection of sealing situation, the technical solution adopted in the utility model is: a kind of apparatus for vacuum producing, the vacuum head front end is provided with the cavity corresponding with described valve seat, in described cavity, be provided with first sealing ring and screw, be provided with locking nut with the corresponding locking of described screw thread at described vacuum head front end, described cavity rear end is communicated with vacuum meter joint and vavuum pump connector, on described vavuum pump connector, be provided with the switching nut, in described vavuum pump connector, slide and be provided with vacuumizing joint and the 3rd sealing ring thereof, in described vavuum pump connector, also be provided with the gaseous core of tool second sealing ring between described vacuumizing joint and the described vavuum pump connector.
Adopt the vacuum test container of technique scheme, owing in air valve, be provided with spool to external seal, and spring force still can keep sealing greater than atmospheric pressure when container changes malleation into by negative pressure.Also be provided with screw thread on the valve seat cylindrical, dock locking with locking nut on the apparatus for vacuum producing, apparatus for vacuum producing can carry out vacuum drawn to the vacuum test container, and vacuum meter can carry out the detection of vacuum and the detection of sealing situation to the vacuum test container.
In sum, the utility model is a kind of vacuum test container of sealing of still keeping when container changes malleation into by negative pressure, and apparatus for vacuum producing carries out vacuum drawn to this vacuum test container, carries out the detection of vacuum and the detection of sealing situation.The utility model is simple in structure, and is stable and reliable for performance.
Description of drawings
Fig. 1 is a vacuum test structure of container schematic diagram;
Fig. 2 is the apparatus for vacuum producing structural representation.
The specific embodiment
Referring to Fig. 1, on body 1, be provided with valve seat 2, in valve seat 2, be provided with spool 6 to external seal, the end that spool 6 is corresponding with valve seat 2 inlets is provided with sealing ring 5, is provided with spring 4 between spool 6 other ends and the valve seat 2, and spring 4 elastic force are greater than atmospheric pressure; On valve seat 2 cylindricals, also be provided with screw thread 3.
Referring to Fig. 2, vacuum head 10 front ends are provided with the cavity 8 corresponding with valve seat 2, in cavity 8, be provided with first sealing ring 9 and screw 11, be provided with locking nut 7 with screw thread 3 corresponding lockings at vacuum head 10 front ends, cavity 8 rear ends are communicated with vacuum meter joint 12 and vavuum pump connector 18, on vavuum pump connector 18, be provided with and open and close nut 16, in vavuum pump connector 18, slide and be provided with vacuumizing joint 17 and the 3rd sealing ring 15 thereof, in connector 18, also be provided with the air valve 14 of tool second sealing ring 13 between vacuumizing joint 17 and the connector 18.
Apparatus for vacuum producing is as follows to vacuum test container extracting vacuum step: one,
Assemble the vacuum test container;
Two, the cavity 8 with vacuum head 10 covers on the vacuum test container valve seat 2, tightens locking nut 7 clockwise on the screw thread 3 of valve seat 2.At this moment the engagement of first sealing ring 9 and valve seat 2 is with the vacuum test seal of vessel.The screw 11 of apparatus for vacuum producing is depressed spool 6, the gas circuit of vacuum test container is opened, and turns clockwise earlier subsequently to open and close nut 16, and vacuumizing joint 17 is moved right, compress air valve 14, close vavuum pump path (in order to avoid vacuum meter mercury is extracted out during turn on pump), start vavuum pump, again rotating open-close nut 16 slowly counterclockwise, vacuum head 17 is moved to the left, open air valve 14, the vacuum test container vacuumizes beginning, can observe situation about vacuumizing from vacuum meter;
Three, after vacuum reached, turning clockwise opened and closed nut 16, closes gas check valve 14, cuts off the vavuum pump gas circuit, closes vacuum-pump power supply again.Whether at this moment vacuum meter communicates with the vacuum test internal tank, observes the variation of vacuum meter show value, can detect the vacuum test container and seal;
Four, check finishes, withdraw from the locking nut 7 of apparatus for vacuum producing counterclockwise, at first reset the airtight vacuum test chamber at the pressure bottom spool 6 of spring 4, first sealing ring 9 is just thrown off valve seat 2 then, makes the vacuum test container still can keeping the vacuum constant after removing apparatus for vacuum producing.
Claims (2)
1, a kind of vacuum test container, comprise body (1) and valve seat (2), it is characterized in that: in described valve seat (2), be provided with spool (6) to external seal, the end that described spool (6) is corresponding with described valve seat (2) inlet is provided with sealing ring (5), be provided with spring (4) between described spool (6) other end and the described valve seat (2), described spring (4) elastic force is greater than atmospheric pressure; On described valve seat (2) cylindrical, also be provided with screw thread (3).
2, a kind of being used for extracted, test right requires the apparatus for vacuum producing of 1 described vacuum test container, it is characterized in that: vacuum head (10) front end is provided with the cavity (8) corresponding with described valve seat (2), in described cavity (8), be provided with first sealing ring (9) and screw (11), be provided with locking nut (7) with the corresponding locking of described screw thread (3) at described vacuum head (10) front end, described cavity (8) rear end is communicated with vacuum meter joint (12) and vavuum pump connector (18), on described vavuum pump connector (18), be provided with and open and close nut (16), in described connector (18), slide and be provided with vacuumizing joint (17) and the 3rd sealing ring (15) thereof, in described connector (18), also be provided with the air valve (14) of tool second sealing ring (13) between described vacuumizing joint (17) and the described connector (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520051200 CN2796825Y (en) | 2005-06-24 | 2005-06-24 | Vacuum experiment container and its vacuum pumping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520051200 CN2796825Y (en) | 2005-06-24 | 2005-06-24 | Vacuum experiment container and its vacuum pumping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2796825Y true CN2796825Y (en) | 2006-07-19 |
Family
ID=36868063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520051200 Expired - Fee Related CN2796825Y (en) | 2005-06-24 | 2005-06-24 | Vacuum experiment container and its vacuum pumping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2796825Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230461A (en) * | 2011-06-09 | 2011-11-02 | 刘庆明 | Vacuum extraction method and device |
| CN110132483A (en) * | 2019-05-27 | 2019-08-16 | 北京航天雷特机电工程有限公司 | A kind of vacuum degree measuring equipment of vacuum pipe |
-
2005
- 2005-06-24 CN CN 200520051200 patent/CN2796825Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230461A (en) * | 2011-06-09 | 2011-11-02 | 刘庆明 | Vacuum extraction method and device |
| CN102230461B (en) * | 2011-06-09 | 2014-01-01 | 刘庆明 | Vacuum extraction method and device |
| CN110132483A (en) * | 2019-05-27 | 2019-08-16 | 北京航天雷特机电工程有限公司 | A kind of vacuum degree measuring equipment of vacuum pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060719 |