CN105842367B - Chromatographic Analysis of Transformer oil experiment nitrogen injections device and its application method - Google Patents
Chromatographic Analysis of Transformer oil experiment nitrogen injections device and its application method Download PDFInfo
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- CN105842367B CN105842367B CN201610427433.4A CN201610427433A CN105842367B CN 105842367 B CN105842367 B CN 105842367B CN 201610427433 A CN201610427433 A CN 201610427433A CN 105842367 B CN105842367 B CN 105842367B
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- injection
- tube
- core bar
- piston core
- nitrogen
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 109
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 53
- 238000002347 injection Methods 0.000 title claims abstract description 46
- 239000007924 injection Substances 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000002474 experimental method Methods 0.000 title claims abstract description 16
- 238000004587 chromatography analysis Methods 0.000 title claims abstract description 14
- 239000007789 gas Substances 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 5
- 238000010276 construction Methods 0.000 claims abstract description 4
- 239000012159 carrier gas Substances 0.000 claims description 8
- 231100000768 Toxicity label Toxicity 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 229910001873 dinitrogen Inorganic materials 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 abstract description 2
- 239000011521 glass Substances 0.000 description 4
- 238000007872 degassing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004868 gas analysis Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- -1 now Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/26—Conditioning of the fluid carrier; Flow patterns
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The present invention relates to Chromatographic Analysis of Transformer oil experiment nitrogen injections device and its application method, it is characterised in that：Injection-tube, piston core bar is made of steel material, multiple air inlets are uniformly offered on the circumferential side wall of injection-tube, plugging cap is set at air inlet, plugging cap is by cap head, closure post, sheath is constituted, the inner face of post is blocked for cambered surface and identical with the radian of the circumferential side wall of injection-tube, piston core bar is hollow-core construction, the front end of piston core bar is provided with external screw thread, the circumferential side wall of injection-tube is provided with elongated internal thread, piston core bar and injection-tube are threaded togather, the rear inside of injection-tube is provided with annular groove and annular groove the sealing ring for being provided with and being fitted with piston core bar.Its simplification gas injection process, accurate regulation nitrogen are measured, volume injected, fundamentally solve the problems, such as that the injection process that existing nitrogen injections instrument is present is complicated, be also easy to produce human error, waste a large amount of nitrogen, good sealing effect, significantly improves the nitrogen gas purity being injected into formation testing.
Description
Technical field
The present invention relates to Chromatographic Analysis of Transformer oil experiment aid, particularly a kind of Chromatographic Analysis of Transformer oil experiment
With nitrogen injections device and its application method.
Background technology
Chromatographic Analysis of Transformer oil experiment includes sampling, degassing, gas analysis and step etc. data processing, wherein degassing side
Method is the important operation link of dissolved gas analysis technology, is most also easy to produce human error, so people are studying such as always
What takes out its dissolved gas as fully as possible from transformer oil.At present, the practice widely followed of degassing is noted in transformer oil
A certain amount of nitrogen is penetrated as balance carrier gas, the dissolved gas in transformer oil are spun off by nitrogen, injection nitrogen
Process is typically：
100ml glass syringes are taken, is cleaned 1-2 times with nitrogen, it is appropriate by being taken in nitrogen gas bomb according to experiment sample amount
Balance carrier gas (N2), then 5ml glass syringes are taken, through N2It is accurate from 100ml syringes to extract 5ml carrier gas (N after flushing2),
It is slowly injected into the syringe of formation testing.In the case where oil sample is more, during repetition takes gas, has a small amount of air and enter
In syringe, carrier gas (N is influenceed2) purity, so as to influence degasifying effect, the process is not only complicated and easily produces human error,
Substantial amounts of nitrogen can also be wasted.In addition, glass syringe often produces the phenomenon of bite because of transformer oil corrosion oxidation.
The content of the invention
Measured the invention aims to provide a kind of simplified gas injection process, accurate regulation nitrogen, the change of volume injected
Depressor oil chromatogram analysis experiment nitrogen injections device and its application method, fundamentally solve existing nitrogen injections instrument and exist
Injection process is complicated, the problem that is also easy to produce human error, wastes a large amount of nitrogen, good sealing effect is significantly improved and is injected into examination
Nitrogen gas purity in oil.
The technical scheme is that：
Nitrogen injections device, including injection-tube, the pin located at syringe front end are used in a kind of Chromatographic Analysis of Transformer oil experiment
Head, the piston core bar in injection-tube, it is characterised in that：The injection-tube, piston core bar are made of steel material, institute
State and uniformly offer multiple air inlets on the circumferential side wall of injection-tube along its length, plugging cap is provided with the air inlet,
The plugging cap by be affixed with air inlet outer face cap head, be inserted into the inner closure post of air inlet, be placed on air inlet outside
Sheath composition, it is described closure post inner face be cambered surface and, the piston core identical with the radian of the circumferential side wall of injection-tube
Bar is hollow-core construction, and the front end of the piston core bar is provided with external screw thread, and the circumferential side wall of the injection-tube is provided with elongated interior spiral shell
Line, the piston core bar and injection-tube are threaded togather, and the rear inside of the injection-tube is provided with annular groove and described
The sealing ring fitted with piston core bar is provided with annular groove, is provided with along its length on the circumferential side wall of the piston core bar
The graduation mark of gas injected slurry volume is represented, the quantity of the graduation mark is two and difference 180 degree arrangement, is set by the graduation mark
There is numeral mark and be sequentially reduced from front to back to zero, it is described when the front end of piston core bar is resisted against the inner bottom surface of injection-tube
The zero graduation of graduation mark is concordant with the rear end face of injection-tube, and the position that corresponding each air inlet of the graduation mark is fully opened is equal
It is set to red.
Above-mentioned Chromatographic Analysis of Transformer oil experiment nitrogen injections device, the cap head of the plugging cap is rubber cap head,
The closure post and sheath is concentric and both upper ends are molded in rubber cap head jointly.
A kind of above-mentioned Chromatographic Analysis of Transformer oil experiment application method of nitrogen injections device, it is characterised in that bag
Include following steps：
1), nitrogen volume as needed in injection sample oil, selects the air inlet on corresponding injection-tube circumferential side wall
It is connected with nitrogen storage cylinder outlet, remaining air inlet is blocked with plugging cap；
2), piston core bar is screwed to injection-tube rear end, when observe piston core bar on graduation mark on represent selection
Stop after the full opening of red-label of air inlet, then open the valve of nitrogen storage cylinder outlet, nitrogen enters in injection-tube
Inner air tube is set to be discharged by syringe needle；
3) and then side observation is exposed to graduation mark on the outside of injection-tube, while screwing piston core bar to wanting to syringe front end
At the corresponding scale of nitrogen volume of injection, now, air inlet is blocked by piston core bar；
4), by the syringe needle syringe of the insertion equipped with sample oil of syringe, piston core bar is then slowly screwed, will be injected
Nitrogen in device is injected with the syringe of sample oil, completes the injection of balance carrier gas.
The beneficial effects of the invention are as follows：
1st, injection-tube and piston core bar are made of steel material, it is to avoid glass syringe corrodes oxygen because of transformer oil
Change and the generation of the phenomenon of bite；
2nd, the injection device has multiple air inlets, before injection balance carrier gas, suitable air inlet is selected, by the damage of nitrogen
Mistake is reduced to minimum, when using, piston core bar is screwed out to the air inlet and is opened completely, after discharge inner air tube, is screwed into work
Plug core bar extremely wants nitrogen injection volume, it is ensured that to the accuracy of nitrogen injection volume in sample oil, be greatly reduced people
It is error；
3rd, using being threadedly coupled between injection-tube and piston core bar, then piston core bar is advanced in injection-tube inside spin, while
During by nitrogen injection sample oil, because air inlet is in by sealed condition, without nitrogen impact, then ensure that in syringe
Gas slowly is injected with the syringe of sample oil, it is ensured that the stability of operation, also allows for staff's grasp, reduces people
It is the possibility of operational error；Meanwhile, the threaded form of injection-tube and piston core bar also contributes to fine-tune injection gas
The volume of body；
4th, plugging cap and sealing ring ensure that the sealing of the injection device, it is ensured that occur without gas leakage situation, prevent nitrogen
Dissipation, it is ensured that the accuracy of nitrogen injection volume, while avoiding waste；
5th, the scale on piston core bar facilitate staff grasp syringe in gas volume and air inlet open and
Sealed condition, is easy to staff to operate, and also reduces human error；
6th, the injection device will take gas and gas injection function is integrated in one, and not only simplify operating procedure, rinse needle tubing, two
It is secondary to take gas injection of gas and synthesize once-through operation, and greatly reduce the dissipation of nitrogen, it is ensured that the nitrogen in injection oil sample is pure
Degree, reduces human error；
7th, piston core bar is provided with double graduation mark and is separated by 180 degree, can be easily for totally-enclosed steel syringe
The accurate nitrogen amount for reading injection；
8th, gas injection nose air intake is tightly blocked by piston core bar, is not working and closed state, nothing are in gas injection process
Locking device need to be separately set, is easily operated；
9th, nitrogen injections process is reduced to a step by the injection device by three steps, can largely shorten the operating time,
Workload is reduced, labour intensity is reduced.
10th, the device is used 1 year in Chromatographic Analysis of Transformer oil experimentation, repaiies trial work area by company electric
Experiment teams and groups of Fourth Shift 1500 experiments are used, and embody that the present apparatus is easy to use, and simple to operate, practicality is very strong.
Brief description of the drawings
Fig. 1 is external structure schematic diagram of the invention；
Fig. 2 is internal structure schematic diagram of the invention；
Fig. 3 is the structural representation of plugging cap of the invention；
Fig. 4 is the side view of Fig. 3.
In figure：1. syringe needle, 2. injection-tube, 3. plugging cap, 301. cap heads, 302. sheaths, 303. closure posts, 4. air inlet,
5. piston core bar, 6. external screw thread, 7. graduation mark, 8. sealing ring.
Specific embodiment
As illustrated, nitrogen injections device is used in Chromatographic Analysis of Transformer oil experiment, including injection-tube 2, located at injection-tube 2
The syringe needle 1 of front end, the piston core bar 5 in injection-tube 2, the injection-tube 2, piston core bar 5 are made of steel material.
Multiple air inlets 4 are uniformly offered on the circumferential side wall of the injection-tube 2 along its length, envelope is provided with the air inlet 4
Blocking cap 3, the plugging cap 3 by the cap head 301 being affixed with the outer face of air inlet 4, the closure post 303 for being inserted into the inner of air inlet 4,
The sheath 302 for being placed on the outside of air inlet 4 is constituted, and the cap head 301 of the plugging cap 3 is rubber cap head, the closure post 303 and shield
Cover that 302 is concentric and both upper ends be molded in rubber cap head jointly, the inner face of the closure post 303 for cambered surface and with injection
The radian of the circumferential side wall of pipe 2 is identical.The piston core bar 5 is hollow-core construction, and the front end of the piston core bar 5 is provided with external screw thread
6, the circumferential side wall of the injection-tube 2 is provided with elongated internal thread, and the piston core bar 5 and injection-tube 2 are threaded togather,
The rear inside of the injection-tube 2 is provided with annular groove and the annular groove and is provided with the sealing ring fitted with piston core bar 5
8.The graduation mark 7 for representing gas injected slurry volume, the scale are provided with the circumferential side wall of the piston core bar 5 along its length
The quantity of line 7 be two and difference 180 degree arrangement, be provided with by the graduation mark 7 numeral mark and be sequentially reduced from front to back to
Zero, when the front end of piston core bar 5 is resisted against the inner bottom surface of injection-tube 2, after the zero graduation and injection-tube 2 of the graduation mark 7
End face is concordant, and the position that corresponding each air inlet 4 of the graduation mark 7 is fully opened is set to red.
The application method of the nitrogen injections device, comprises the following steps：
1), using preceding, piston core bar 5 is screwed in syringe 2 completely, the front end face of piston core bar 5 and bottom in syringe 2
Face is in contact.Then, nitrogen volume as needed in injection sample oil, selects entering on the corresponding circumferential side wall of injection-tube 2
Gas port 4 is connected with nitrogen storage cylinder outlet, and remaining air inlet 4 is blocked with plugging cap 3；
2), piston core bar 5 is screwed to the rear end of injection-tube 2, is selected when being represented on the graduation mark 7 observed on piston core bar 5
Stop after the full opening of red-label of air inlet 4 selected, then open the valve of nitrogen storage cylinder outlet, nitrogen enters injection
Inner air tube is set to be discharged by syringe needle in pipe 2；
3) and then side observation is exposed to the graduation mark 7 in the outside of injection-tube 2, while to the front end of injection-tube 2 screw piston core bar 5 to
At the corresponding scale of nitrogen volume to be injected, now, air inlet 4 is blocked by piston core bar 5；
4), the syringe needle 1 of syringe 2 is inserted in the syringe equipped with sample oil, piston core bar 5 is then slowly screwed, will
Nitrogen in syringe 2 is injected with the syringe of sample oil, completes the injection of balance carrier gas.
Claims (3)
1. a kind of Chromatographic Analysis of Transformer oil experiment nitrogen injections device, including injection-tube, the syringe needle located at syringe front end,
Piston core bar in injection-tube, it is characterised in that：The injection-tube, piston core bar are made of steel material, described
Multiple air inlets are uniformly offered on the circumferential side wall of injection-tube along its length, plugging cap, institute are provided with the air inlet
State plugging cap by be affixed with air inlet outer face cap head, be inserted into the inner closure post of air inlet, be placed on the outside of air inlet
Sheath is constituted, and the inner face of the closure post is cambered surface and, the piston core bar identical with the radian of the circumferential side wall of injection-tube
It is hollow-core construction, the front end of the piston core bar is provided with external screw thread, and the circumferential side wall of the injection-tube is provided with elongated internal thread,
The piston core bar and injection-tube are threaded togather, and the rear inside of the injection-tube is provided with annular groove and the annular
The sealing ring fitted with piston core bar is provided with groove, expression is provided with along its length on the circumferential side wall of the piston core bar
The graduation mark of gas injected slurry volume, the quantity of the graduation mark is two and difference 180 degree arrangement, and number is provided with by the graduation mark
Word mark and it is sequentially reduced from front to back to zero, when the front end of piston core bar is resisted against the inner bottom surface of injection-tube, the scale
The zero graduation of line is concordant with the rear end face of injection-tube, and the position that corresponding each air inlet of the graduation mark is fully opened is set to
It is red.
2. nitrogen injections device is used in Chromatographic Analysis of Transformer oil experiment according to claim 1, it is characterised in that：The envelope
The cap head of blocking cap is rubber cap head, the closure post and sheath is concentric and both upper ends are molded in rubber cap head jointly.
3. a kind of Chromatographic Analysis of Transformer oil as claimed in claim 1 is tested with the application method of nitrogen injections device, its spy
Levy and be, comprise the following steps：
1), nitrogen volume as needed in injection sample oil, selects the air inlet and nitrogen on corresponding injection-tube circumferential side wall
The outlet of gas gas bomb is connected, and remaining air inlet is blocked with plugging cap；
2), piston core bar is screwed to injection-tube rear end, when the air inlet that selection is represented on the graduation mark observed on piston core bar
Stop after mouthful full opening of red-label, then open the valve of nitrogen storage cylinder outlet, nitrogen is into making pipe in injection-tube
Interior air is discharged by syringe needle；
3) and then side observation is exposed to graduation mark on the outside of injection-tube, while screwing piston core bar to being injected to syringe front end
The corresponding scale of nitrogen volume at, now, air inlet is blocked by piston core bar；
4), by the syringe needle syringe of the insertion equipped with sample oil of syringe, piston core bar is then slowly screwed, by syringe
Nitrogen be injected with sample oil syringe in, complete balance carrier gas injection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610427433.4A CN105842367B (en) | 2016-06-16 | 2016-06-16 | Chromatographic Analysis of Transformer oil experiment nitrogen injections device and its application method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610427433.4A CN105842367B (en) | 2016-06-16 | 2016-06-16 | Chromatographic Analysis of Transformer oil experiment nitrogen injections device and its application method |
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| CN105842367A CN105842367A (en) | 2016-08-10 |
| CN105842367B true CN105842367B (en) | 2017-06-27 |
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| CN113148298B (en) * | 2020-12-09 | 2022-07-05 | 黄山小罐茶业有限公司 | Preparation method of multi-packaged small-pot tea |
| CN112623340B (en) * | 2020-12-09 | 2022-07-22 | 黄山小罐茶业有限公司 | A nitrogen gas cabin for tealeaves fills nitrogen packing |
| CN112550870B (en) * | 2020-12-09 | 2022-04-29 | 黄山小罐茶业有限公司 | Continuous production line for multi-packaged small-pot tea |
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| CN105606720A (en) * | 2015-11-20 | 2016-05-25 | 国网山东青州市供电公司 | Electric power gas chromatography sample-preparation exhaust device |
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2016
- 2016-06-16 CN CN201610427433.4A patent/CN105842367B/en active Active
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| JPS6468657A (en) * | 1987-09-09 | 1989-03-14 | Dow Chemical Japan | Method and device for dispensing column chromatography eluate |
| US6164144A (en) * | 1997-12-18 | 2000-12-26 | Varian, Inc. | Method and device for solid phase microextraction |
| JP2004108884A (en) * | 2002-09-17 | 2004-04-08 | Jasco Corp | Minute flow rate pump, flow injection analysis device using it and high speed liquid chromatograph |
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