CN105628428A - Micro air injection system for negative ion and air collision experiment - Google Patents
Micro air injection system for negative ion and air collision experiment Download PDFInfo
- Publication number
- CN105628428A CN105628428A CN201610130408.XA CN201610130408A CN105628428A CN 105628428 A CN105628428 A CN 105628428A CN 201610130408 A CN201610130408 A CN 201610130408A CN 105628428 A CN105628428 A CN 105628428A
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- Prior art keywords
- connection valve
- injection system
- negative ion
- valve
- air injection
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a micro air injection system for a negative ion and air collision experiment, which relates to the field of micro air injection system. The system comprises a first connection valve, a second connection valve, a third connection valve, a quick joint, a pressure gauge, a PTFE pipe and a four-way pipe fitting, wherein each of four joints of the four-way pipe fitting is individually connected with a component, the components are the second connection valve, the pressure gauge, the PTFE pipe and the third connection valve sequentially along the clockwise direction; the second connection valve is connected with the first connection valve via the quick joint; and the third connection valve is externally connected with a mechanical pump. Through the above mode, compared with the former air injection system, the micro air injection system can maintain the air pressure in the collision chamber to be stabilized for more than 10 hours. A leak detector is used for carrying out leak detection on each interface according to a top-bottom leak detection principle, and no leak is detected.
Description
Technical field
The present invention relates to trace gas injection system field, particularly relate to a kind of for the trace gas injection system of negative ion and gas collisions experiment.
Background technology
Need to vacuum system, use gas injection system is carried out trace gas injection in negative ion and gas collisions are tested, collision chamber hit gas injected system as shown in Figure 2. Air pressure in general gas storage bottle is about 20 normal atmosphere, 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 differ from 4 �� 10-4Pa, and keep air pressure constant in reaction process. This just needs to ensure 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 thus desirable to be provided with reducing valve 10 in the middle of them, is used for reducing pressure. First switch-valve 11 and the 2nd switch-valve 12 are used to seal bomb and vacuum system respectively. After decompression, the reading general control of weather gage 13 is about 1 normal atmosphere. Micrometering valve 14 is used to control gas flow size. In experimentation, after injecting target gas by hypodermic needle, in collision chamber, target air pressure general control is 1 �� 10-4Pa, and keep constant in experimentation. Experiment proves, gas injection system originally can ensure that the air pressure of collision chamber is substantially stablized the time remained unchanged and is approximately 3 hours, and the time is relatively short. And gas injection system originally has the reason of leakage to be that copper pipe stopping property after repeatedly twisting is deteriorated, and causes air to enter in the middle of system.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of for the trace gas injection system of negative ion and 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 the problems of the technologies described above, the technical scheme that the present invention adopts is to provide a kind of for the trace gas injection system of negative ion and gas collisions experiment, and each parts comprise the first connection valve, the 2nd connection valve, the 3rd connection valve, rapid-acting coupling, tensimeter, PTFE tube and four-way pipe fitting; Four joints of described four-way pipe fitting connect separately parts separately, and these parts are followed successively by the 2nd connection valve, tensimeter, PTFE tube and the 3rd connection valve by clockwise direction; Described 2nd connection valve is also connected valve by described rapid-acting coupling with described first and is connected; Described 3rd connection valve connects mechanical pump outdoors.
Preferably, connect between adjacent component or by pipe connecting; Described pipe connecting all adopts stainless steel quality to make.
The invention has the beneficial effects as follows: providing a kind of for the trace gas injection system of negative ion and gas collisions experiment, compared with gas injection system before, present gas injection system can maintain stable gas pressure more than 10 hours in collision chamber. And each interface is hunted leak according to leak detection principle from top to bottom using leak locator, it does not have find that there is leakage.
Accompanying drawing explanation
Fig. 1 is that the present invention is a kind of for the anatomical connectivity figure of negative ion and the trace gas injection system of gas collisions experiment;
Fig. 2 is the anatomical connectivity figure of trace gas injection system in prior art;
In accompanying drawing, the mark of each parts is as follows: 1, the first connection valve; 2, the 2nd connection valve; 3, the 3rd connection valve; 4, rapid-acting coupling; 5, tensimeter; 6, PTFE tube; 7, four-way pipe fitting; 8, gas cylinder; 10, reducing valve; 11, the first switch-valve; 12, the 2nd switch-valve; 13, weather gage; 14, micrometering valve; 15, gas injection pin.
Embodiment
Below in conjunction with accompanying drawing, the better embodiment of the present invention is described in detail, so that advantages and features of the invention can be easier to be readily appreciated by one skilled in the art, thus protection scope of the present invention is made more explicit defining.
Referring to accompanying drawing 1, the embodiment of the present invention comprises:
For a trace gas injection system for negative ion and gas collisions experiment, each parts comprise the first connection valve 1, the 2nd connection valve 2, the 3rd connection valve 3, rapid-acting coupling 4, tensimeter 5, PTFE tube 6 and four-way pipe fitting 7; Four joints of described four-way pipe fitting 7 connect separately parts separately, and these parts are followed successively by the 2nd connection valve 2, tensimeter 5, PTFE tube 6 and the 3rd connection valve 3 by clockwise direction; Described 2nd connection valve 2 is also connected valve 1 by described rapid-acting coupling 4 with described first and is connected; The described 3rd connection external mechanical pump of valve 3. Connect between adjacent component or by pipe connecting; Described pipe connecting all adopts stainless steel quality to make. The parts of this trace gas injection system are all bought from Swagelok, all change the copper pipe on original gas injection system into stainless steel tube and PTFE tube, and joint has also changed Swagelok joint into; Between two valves, add a rapid-acting coupling, it is convenient to dismounting; Below gauge outfit, add a four-way, it is used for connecting mechanical pump, gas injecting pipe is carried out forvacuum. Compared with gas injection system before, present gas injection system can maintain stable gas pressure more than 10 hours in collision chamber. We use leak locator to be hunted leak by each interface according to leak detection principle from top to bottom, it does not have find that there is leakage.
The foregoing is only embodiments of the invention; not thereby the patent scope of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, all it is included in the scope of patent protection of the present invention with reason.
Claims (2)
1. the trace gas injection system tested for negative ion and gas collisions, it is characterised in that: each parts comprise the first connection valve, the 2nd connection valve, the 3rd connection valve, rapid-acting coupling, tensimeter, PTFE tube and four-way pipe fitting; Four joints of described four-way pipe fitting connect separately parts separately, and these parts are followed successively by the 2nd connection valve, tensimeter, PTFE tube and the 3rd connection valve by clockwise direction; Described 2nd connection valve is also connected valve by described rapid-acting coupling with described first and is connected; Described 3rd connection valve connects mechanical pump outdoors.
2. according to claim 1 a kind of for the trace gas injection system of negative ion and gas collisions experiment, it is characterised in that: connected by pipe connecting between adjacent component; Described pipe connecting all adopts stainless steel quality to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610130408.XA CN105628428A (en) | 2016-03-08 | 2016-03-08 | Micro air injection system for negative ion and air collision experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610130408.XA CN105628428A (en) | 2016-03-08 | 2016-03-08 | Micro air injection system for negative ion and air collision experiment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105628428A true CN105628428A (en) | 2016-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610130408.XA Pending CN105628428A (en) | 2016-03-08 | 2016-03-08 | Micro air injection system for negative ion and air collision experiment |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010029979A1 (en) * | 1997-11-14 | 2001-10-18 | Dao-Hong Zheng | Gas control device and method of supplying gas |
| CN101266903A (en) * | 2008-04-24 | 2008-09-17 | 海宁新光阳光电有限公司 | A charging and discharging method and device based on Xe gas |
| CN201160197Y (en) * | 2008-02-02 | 2008-12-03 | 安徽省电力公司阜阳供电公司 | Multifunctional inflation and deflation integrated joint of SF6 electrical equipment |
| CN201868315U (en) * | 2010-11-05 | 2011-06-15 | 山东电力集团公司泰安供电公司 | Sulfur hexafluoride gas-filling device |
| CN204553942U (en) * | 2015-02-06 | 2015-08-12 | 国家电网公司 | SF6 gas vacuumizes and fills integrated triple valve |
| CN205404147U (en) * | 2016-03-08 | 2016-07-27 | 江苏德佐电子科技有限公司 | A micro - gas injection system for anion and gaseous collision experiment |
-
2016
- 2016-03-08 CN CN201610130408.XA patent/CN105628428A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010029979A1 (en) * | 1997-11-14 | 2001-10-18 | Dao-Hong Zheng | Gas control device and method of supplying gas |
| CN201160197Y (en) * | 2008-02-02 | 2008-12-03 | 安徽省电力公司阜阳供电公司 | Multifunctional inflation and deflation integrated joint of SF6 electrical equipment |
| CN101266903A (en) * | 2008-04-24 | 2008-09-17 | 海宁新光阳光电有限公司 | A charging and discharging method and device based on Xe gas |
| CN201868315U (en) * | 2010-11-05 | 2011-06-15 | 山东电力集团公司泰安供电公司 | Sulfur hexafluoride gas-filling device |
| CN204553942U (en) * | 2015-02-06 | 2015-08-12 | 国家电网公司 | SF6 gas vacuumizes and fills integrated triple valve |
| CN205404147U (en) * | 2016-03-08 | 2016-07-27 | 江苏德佐电子科技有限公司 | A micro - gas injection system for anion and gaseous collision experiment |
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Application publication date: 20160601 |