CN205404147U - A micro - gas injection system for anion and gaseous collision experiment - Google Patents
A micro - gas injection system for anion and gaseous collision experiment Download PDFInfo
- Publication number
- CN205404147U CN205404147U CN201620177919.2U CN201620177919U CN205404147U CN 205404147 U CN205404147 U CN 205404147U CN 201620177919 U CN201620177919 U CN 201620177919U CN 205404147 U CN205404147 U CN 205404147U
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- injection system
- gas injection
- connection valves
- connecting valve
- anion
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Abstract
The utility model relates to a micro - gas injection system for anion and gaseous collision experiment relates to micro - gas injection system field, and its each parts include a connection valves, the 2nd connection valves, the 3rd connection valves, quick -operation joint, manometer, PTFE pipe and cross pipe fitting, four of the cross pipe fitting connect parts of separate connection separately, and these parts are pressed clockwise and are managed and the 3rd connection valves for the 2nd connection valves, manometer, PTFE in proper order, the 2nd connection valves still passes through quick -operation joint with a connection valves links to each other, the external mechanical pump of the 3rd connection valves. Through above -mentioned mode, this trace gas injection system compares with before gas injection system and can keep collision cavity internal gas pressure and stablize more than 10 hours. And using the leakage detector to hunt leak to every interface according to leak hunting principle from top to bottom, do not discover to have the hourglass.
Description
Technical field
This utility model relates to trace gas injection system field, particularly relates to a kind of trace gas injection system for anion with gas collisions experiment.
Background technology
The experiment of anion and gas collisions needs to using gas injection system that vacuum system is carried out trace gas injection, collision chamber hit gas injected system as shown in Figure 2.Air pressure in general gas flow storage bottle is 20 atm higher, and the base vacuum of collision area is generally better than 10-5Pa.After injecting target gas by hypodermic needle (pin is grown up and is about 5cm, and internal diameter is approximately 0.5mm), the air pressure in collision chamber can not be worse than 4 × 10-4Pa, and keep air pressure constant in course of reaction.This is accomplished by ensureing that the flow of gas injection pin 15 can not excessive and constant current within the specific limits.There is very big difference in the air pressure of gas cylinder 8 and conversion zone, it is therefore desirable between which is provided with air relief valve 10, is used for reducing pressure.First switch valve 11 and second switch valve 12 are used to seal gas bomb and vacuum system respectively.After decompression, the reading general control of air gauge 13 is at 1 atm higher.Reset valve 14 is used to control gas flow size.In experimentation, after injecting target gas by hypodermic needle, collision chamber internal target air pressure general control is 1 × 10-4Pa, and keep constant in experimentation.It is demonstrated experimentally that original gas injection system can ensure that the air pressure of the collision chamber basicly stable time remained unchanged is approximately 3 hours, the time is relatively short.And gas injection system originally has the reason of leakage to be that copper pipe sealing after repeatedly twisting is deteriorated, and causes in the middle of air entrance system.
Utility model content
This utility model is mainly solving the technical problems that provide a kind of trace gas injection system for anion with gas collisions experiment, in order to improve the collision chamber stable gas pressure time, it is necessary to solve the sealing problem of vacuum system.
For solving above-mentioned technical problem, the technical scheme that this utility model adopts is to provide a kind of trace gas injection system for anion with gas collisions experiment, and each parts include the first connecting valve, the second connecting valve, the 3rd connecting valve, snap joint, Pressure gauge, PTFE tube and four-way pipe fitting；Four joints of described four-way pipe fitting each individually connect parts, and these parts are followed successively by the second connecting valve, Pressure gauge, PTFE tube and the 3rd connecting valve in the direction of the clock；Described second connecting valve is connected with described first connecting valve also by described snap joint；The described 3rd external mechanical pump of connecting valve.
Preferably, it is attached between adjacent component or by connecting tube；Described connecting tube all adopts rustless steel quality to make.
The beneficial effects of the utility model are: providing a kind of trace gas injection system for anion with gas collisions experiment, compared with gas injection system before, present gas injection system is able to maintain that collision chamber internal gas pressure stablizes more than 10 hours.And each interface is hunted leak according to leak detection principle from top to bottom using leak detector, it does not have find there is leakage.
Accompanying drawing explanation
The structure that Fig. 1 is a kind of trace gas injection system tested with gas collisions for anion of this utility model is connected figure；
Fig. 2 is the structure connection figure of trace gas injection system in prior art；
In accompanying drawing, the labelling of each parts is as follows: 1, the first connecting valve；2, the second connecting valve；3, the 3rd connecting valve；4, snap joint；5, Pressure gauge；6, PTFE tube；7, four-way pipe fitting；8, gas cylinder；10, air relief valve；11, the first switch valve；12, second switch valve；13, air gauge；14, reset valve；15, gas injection pin.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, so that advantage of the present utility model and feature can be easier to be readily appreciated by one skilled in the art, thus protection domain of the present utility model being made apparent clear and definite defining.
Referring to accompanying drawing 1, this utility model embodiment includes:
A kind of trace gas injection system for anion with gas collisions experiment, each parts include first connecting valve the 1, second connecting valve the 2, the 3rd connecting valve 3, snap joint 4, Pressure gauge 5, PTFE tube 6 and four-way pipe fitting 7；Four joints of described four-way pipe fitting 7 each individually connect parts, and these parts are followed successively by the second connecting valve 2, Pressure gauge 5, PTFE tube 6 and the 3rd connecting valve 3 in the direction of the clock；Described second connecting valve 2 is connected with described first connecting valve 1 also by described snap joint 4；The described 3rd external mechanical pump of connecting valve 3.It is attached between adjacent component or by connecting tube；Described connecting tube all adopts rustless steel quality to make.The parts of this trace gas injection system are entirely from Swagelok purchase, and the copper pipe on original gas injection system all changes into stainless steel tube and PTFE tube, and joint has also changed Swagelok joint into；A snap joint has been added, it is simple to dismounting between two valves；Below gauge outfit, add a four-way, be used for connecting mechanical pump, gas injecting pipe is carried out forvacuum.Compared with gas injection system before, present gas injection system is able to maintain that collision chamber internal gas pressure stablizes more than 10 hours.We use leak detector according to leak detection principle from top to bottom, each interface to be hunted leak, it does not have find there is leakage.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalent structure utilizing this utility model description to make or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, all in like manner include in scope of patent protection of the present utility model.
Claims (2)
1. the trace gas injection system for anion with gas collisions experiment, it is characterised in that: each parts include the first connecting valve, the second connecting valve, the 3rd connecting valve, snap joint, Pressure gauge, PTFE tube and four-way pipe fitting；Four joints of described four-way pipe fitting each individually connect parts, and these parts are followed successively by the second connecting valve, Pressure gauge, PTFE tube and the 3rd connecting valve in the direction of the clock；Described second connecting valve is connected with described first connecting valve also by described snap joint；The described 3rd external mechanical pump of connecting valve.
2. a kind of trace gas injection system for anion with gas collisions experiment according to claim 1, it is characterised in that: it is attached by connecting tube between adjacent component；Described connecting tube all adopts rustless steel quality to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620177919.2U CN205404147U (en) | 2016-03-08 | 2016-03-08 | A micro - gas injection system for anion and gaseous collision experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620177919.2U CN205404147U (en) | 2016-03-08 | 2016-03-08 | A micro - gas injection system for anion and gaseous collision experiment |
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| Publication Number | Publication Date |
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| CN205404147U true CN205404147U (en) | 2016-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620177919.2U Active CN205404147U (en) | 2016-03-08 | 2016-03-08 | A micro - gas injection system for anion and gaseous collision experiment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105628428A (en) * | 2016-03-08 | 2016-06-01 | 江苏德佐电子科技有限公司 | Micro air injection system for negative ion and air collision experiment |
-
2016
- 2016-03-08 CN CN201620177919.2U patent/CN205404147U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105628428A (en) * | 2016-03-08 | 2016-06-01 | 江苏德佐电子科技有限公司 | Micro air injection system for negative ion and air collision experiment |
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