CN115356422B - Double-ended needle and method for transferring insulating oil chromatographic test sample gas - Google Patents
Double-ended needle and method for transferring insulating oil chromatographic test sample gas Download PDFInfo
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- CN115356422B CN115356422B CN202211299147.6A CN202211299147A CN115356422B CN 115356422 B CN115356422 B CN 115356422B CN 202211299147 A CN202211299147 A CN 202211299147A CN 115356422 B CN115356422 B CN 115356422B
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- 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
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/16—Injection
- G01N30/18—Injection using a septum or microsyringe
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Abstract
The application discloses double-ended needle and method for transferring insulating oil chromatography test sample gas, including: the double-ended needle comprises a double-ended needle body, a first needle head and a second needle head, wherein the first needle head and the second needle head are arranged in the needle body; the needle body is internally provided with a control system, the control system comprises a central processing unit, and a gas-liquid inductor and a micro valve which are arranged between the first needle head and the second needle head, the gas-liquid inductor is electrically connected with the central processing unit, and the central processing unit is electrically connected with the micro valve. The invention is easier and more convenient when pricking the sealing rubber cap of the injector, and meanwhile, the insulating oil is not transferred together in the sample gas transferring process, thereby effectively ensuring the accuracy of the test result.
Description
Technical Field
The application relates to the technical field of insulating oil chromatographic test sample gas transfer, in particular to a double-ended needle and a method for transferring insulating oil chromatographic test sample gas.
Background
A large amount of chromatographic tests are carried out on transformer insulating oil every year, 5ml of balance gas is injected into an injector filled with an insulating oil sample and put into an oscillator to oscillate during the tests, the sample gas which is oscillated and separated out is transferred to a sample injector to be tested and sealed by a sealing rubber cap for standby application, and because a nozzle of the injector is difficult to be accurately pricked when a double-ended needle is pricked into the sealing rubber cap of the injector, a pricked needle head or a needle point slides out to be pricked by a hand, the efficiency is low, the man-machine work efficiency is not met, and the insulating oil is easy to transfer together during the transfer, so that the test result is influenced, and the instrument is easy to damage. Therefore, the invention provides a double-ended needle and a method for transferring sample gas of an insulating oil chromatographic test.
Disclosure of Invention
The embodiment of the application provides a double-ended needle and a method for transferring insulating oil chromatographic test sample gas, so that the syringe sealing rubber cap is easier and more convenient to prick, and meanwhile, the insulating oil cannot be transferred together in the process of transferring the sample gas.
The application provides in a first aspect a double-ended needle for transferring an insulating oil chromatography test sample gas, comprising: a double-ended needle body;
the double-ended needle body comprises a needle body, a first needle head and a second needle head, wherein the first needle head and the second needle head are arranged in the needle body;
the two ends of the needle body are provided with conical openings;
the first needle head and the second needle head are respectively positioned in the conical openings at two ends of the needle body, and the first needle head is communicated with the second needle head;
a control system is arranged in the needle body;
the control system comprises a central processing unit, and a gas-liquid sensor and a micro valve which are arranged between the first needle head and the second needle head;
the gas-liquid sensor is electrically connected with the central processing unit;
the central processor is electrically connected to the microvalve.
Optionally, the first needle and the second needle are both located at a central position within the tapered opening.
Optionally, the first needle and the second needle are located on the same line.
Optionally, the first needle and the second needle are of an integrally formed structure.
The second aspect of the application provides a transfer method based on the double-ended needle for transferring the insulating oil chromatography test sample gas, which specifically comprises the following steps:
step 1: pricking the second needle head of the double-ended needle body into a standby injector, and pricking the first needle head of the double-ended needle body into a degassing injector which is used for degassing through oscillation;
step 2: rotating the double-ended needle body so that the spare syringe is positioned above the degassing syringe;
and step 3: pushing a core tube of the degassing injector to transfer gas in the degassing injector into the standby injector, wherein in the gas transfer process, when insulating oil in the degassing injector passes through the gas-liquid sensor, the gas-liquid sensor can send a signal to the central processing unit, and the central processing unit controls the micro valve to close so as to prevent the insulating oil from entering the standby injector;
and 4, step 4: and when the gas transfer is finished, pulling out the standby injector to finish the gas transfer.
Optionally, in step 2, the degassing injector has a certain inclination angle with the vertical plane.
Optionally, the angle of inclination is 30-60 °.
According to the technical scheme, the embodiment of the application has the following advantages: this double-ended needle is through setting up the bell mouth, and hide the syringe needle in the bell mouth, make it easier when pricking the sealed rubber cap of syringe, it is convenient, curved syringe needle and needle point hand condition can not appear pricking, and simultaneously, through setting up gas-liquid inductor and microvalve between first syringe needle and second syringe needle, when the gas-liquid inductor senses liquid flow, can signal to central processing unit, close by central processing unit control microvalve, and then can prevent effectively that the insulating oil from flowing into during the reserve syringe, thereby the safety of instrument and the accuracy of test result have been guaranteed.
Drawings
FIG. 1 is a schematic structural diagram of a double-ended needle for transferring an insulating oil chromatography test sample gas in an embodiment of the application in use;
FIG. 2 is a schematic structural diagram of a control system according to an embodiment of the present application;
wherein the reference numerals are:
1-double-ended needle body, 2-first needle head, 3-second needle head, 4-tapered port, 5-control system, 51-central processor, 52-gas-liquid inductor, 53-micro valve, 6-degassing injector and 7-spare injector.
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The application provides an embodiment of a double-ended needle for transferring insulating oil chromatography test sample gas, and particularly refers to fig. 1 and 2.
The double-ended needle for transferring the sample gas for the insulating oil chromatography test in the embodiment comprises: the double-ended needle comprises a double-ended needle body 1, wherein the double-ended needle body 1 comprises a needle body and a first needle head 2 and a second needle head 3 which are arranged in the needle body, conical openings 4 are formed in two ends of the needle body, the first needle head 2 and the second needle head 3 are respectively positioned in the conical openings 4 in the two ends of the needle body, and the first needle head 2 is communicated with the second needle head 3; a control system 5 is arranged in the needle body, the control system 5 comprises a central processing unit 51, and a gas-liquid sensor 52 and a micro valve 53 which are arranged between the first needle 2 and the second needle 3, and particularly, the micro valve 53 is normally open; the gas-liquid sensor 52 is electrically connected to the cpu 51, and the cpu 51 is electrically connected to the micro valve 53.
It should be noted that: this double-ended needle is through setting up cone mouth 4, and hide the syringe needle in cone mouth 4, make it is easier when pricking the sealed rubber cap of syringe, it is convenient, the condition in hand can not appear pricking curved syringe needle and needle point, and simultaneously, through setting up gas-liquid inductor 52 and microvalve 53 between first syringe needle 2 and second syringe needle 3, when gas-liquid inductor 52 senses liquid flow, can signal to central processing unit 51, control microvalve 53 by central processing unit 51 and close, and then can prevent effectively that insulating oil from flowing into reserve syringe 7 in, thereby the safety of instrument and the accuracy of test result have been guaranteed.
The above embodiment of the double-ended needle for transferring insulating oil chromatography test sample gas provided in the embodiment of the present application is the first embodiment, and the following embodiment of the double-ended needle for transferring insulating oil chromatography test sample gas provided in the embodiment of the present application is the second embodiment, specifically please refer to fig. 1 and fig. 2.
The double-ended needle for transferring the sample gas for the insulating oil chromatography test in the embodiment comprises: the double-ended needle comprises a double-ended needle body 1, wherein the double-ended needle body 1 comprises a needle body and a first needle head 2 and a second needle head 3 which are arranged in the needle body, conical openings 4 are formed in two ends of the needle body, the first needle head 2 and the second needle head 3 are respectively positioned in the conical openings 4 in the two ends of the needle body, and the first needle head 2 is communicated with the second needle head 3; the needle body is internally provided with a control system 5, the control system 5 comprises a central processing unit 51, and a gas-liquid sensor 52 and a micro valve 53 which are arranged between the first needle 2 and the second needle 3, the gas-liquid sensor 52 is electrically connected with the central processing unit 51, and the central processing unit 51 is electrically connected with the micro valve 53.
It should be noted that: the micro valve 53 is normally open, when the gas-liquid sensor 52 senses that liquid flows through, a signal is sent to the central processing unit 51, and the central processing unit 51 sends a command to control the micro valve 53 to automatically close, so that the insulating oil is prevented from flowing into the spare injector 7.
In particular, the first needle 2 and the second needle 3 are both located in a central position within the conical mouth 4.
The first needle 2 and the second needle 3 may be located on the same straight line.
The first needle 2 and the second needle 3 may be an integral structure.
The application also provides a transfer method of the double-ended needle for transferring the sample gas of the insulating oil chromatography test based on the method, which specifically comprises the following steps:
step 1: pricking the second needle 3 of the double-ended needle body 1 into a standby injector 7, and pricking the first needle 2 of the double-ended needle body 1 into a degassing injector 6 which is vibrated to remove gas;
step 2: the double-ended needle body 1 is rotated to enable the spare injector 7 to be positioned above the degassing injector 6, and the removed gas is concentrated on the spare injector, so that the removed gas can be completely transferred;
and step 3: pushing the core tube of the degassing injector 6 to transfer the gas in the degassing injector 6 into the spare injector 7, wherein in the gas transfer process, when the insulating oil in the degassing injector 6 passes through the gas-liquid sensor 52, the gas-liquid sensor 52 sends a signal to the central processor 51, and the central processor 51 controls the micro valve 53 to close, so that the insulating oil is prevented from entering the spare injector 7;
and 4, step 4: when the gas transfer is completed, the spare injector 7 is pulled out, and the gas transfer is completed.
Specifically, in step 2, the degassing injector 6 is inclined at a certain angle to the vertical plane. Specifically, the inclination angle may be 30 to 60 °. Preferably, the angle of inclination is 45 °.
It should be noted that: because the needle nozzle of the injector is not positioned in the middle of the injector, the gas can be concentrated by inclining a certain angle, and the gas can be transferred quickly and completely.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present application.
Claims (7)
1. A double-ended needle for transferring an insulating oil chromatography test sample gas, comprising: a double-ended needle body;
the double-ended needle body comprises a needle body, a first needle head and a second needle head, wherein the first needle head and the second needle head are arranged in the needle body;
the two ends of the needle body are both provided with conical openings;
the first needle head and the second needle head are respectively positioned in the conical openings at the two ends of the needle body, and the first needle head is communicated with the second needle head;
a control system is arranged in the needle body;
the control system comprises a central processing unit, and a gas-liquid sensor and a micro valve which are arranged between the first needle head and the second needle head;
the gas-liquid sensor is electrically connected with the central processing unit;
the central processor is electrically connected to the microvalve.
2. The double-ended needle for transferring an insulating oil chromatography sample gas of claim 1, wherein said first needle and said second needle are both centrally located within said tapered opening.
3. The double-ended needle for transferring an insulating oil chromatography test sample gas according to claim 1, wherein the first needle head and the second needle head are located on the same straight line.
4. The double-ended needle for transferring insulating oil chromatography test sample gas according to claim 1, wherein the first needle head and the second needle head are of an integrally formed structure.
5. A method for transferring a double-ended needle for transferring an insulating oil chromatography test sample gas according to any one of claims 1 to 4, comprising the steps of:
step 1: pricking the second needle head of the double-ended needle body into a standby injector, and pricking the first needle head of the double-ended needle body into a degassing injector which is vibrated to remove gas;
and 2, step: rotating the double-ended needle body so that the spare syringe is positioned above the degassing syringe;
and 3, step 3: pushing a core tube of the degassing injector to transfer gas in the degassing injector into the standby injector, wherein in the gas transfer process, when insulating oil in the degassing injector passes through the gas-liquid sensor, the gas-liquid sensor can send a signal to the central processing unit, and the central processing unit controls the micro valve to close so as to prevent the insulating oil from entering the standby injector;
and 4, step 4: and when the gas transfer is finished, pulling out the standby injector to finish the gas transfer.
6. The method for transferring a double-ended needle for transferring an insulating oil chromatography test sample gas according to claim 5, wherein in step 2, the degassing injector is inclined at a certain angle to a vertical plane.
7. The method for transferring a double-ended needle for transferring an insulating oil chromatography test sample gas according to claim 6, wherein the inclination angle is 30 to 60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211299147.6A CN115356422B (en) | 2022-10-24 | 2022-10-24 | Double-ended needle and method for transferring insulating oil chromatographic test sample gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211299147.6A CN115356422B (en) | 2022-10-24 | 2022-10-24 | Double-ended needle and method for transferring insulating oil chromatographic test sample gas |
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| Publication Number | Publication Date |
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| CN115356422A CN115356422A (en) | 2022-11-18 |
| CN115356422B true CN115356422B (en) | 2023-01-20 |
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Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2468051Y (en) * | 2001-03-21 | 2001-12-26 | 关德秋 | Two-way syringe needle |
| CN201543056U (en) * | 2009-11-23 | 2010-08-11 | 王晓丽 | Transfusion warner |
| CN201945581U (en) * | 2010-12-16 | 2011-08-24 | 河南省中分仪器有限公司 | Automatic degassing and automatic sample-feeding system for chromatographic analysis of transformer oil |
| CN204731068U (en) * | 2015-05-15 | 2015-10-28 | 国家电网公司 | For the glass syringe sealing sampling auxiliary joint device of insulating oil gas chromatographic analysis |
| WO2018100970A1 (en) * | 2016-11-29 | 2018-06-07 | 田村 稔 | Degassing device for eliminating gas component dissolved in liquid |
| CN207300660U (en) * | 2017-11-01 | 2018-05-01 | 山东科技大学 | A kind of oil sampler |
| CN108014392A (en) * | 2018-01-10 | 2018-05-11 | 四川省肿瘤医院 | A kind of changing liquid automatically system |
| CN208239154U (en) * | 2018-05-24 | 2018-12-14 | 云南电网有限责任公司玉溪供电局 | Buchholz relay air-guide box takes gas sample device |
| CN208588161U (en) * | 2018-06-15 | 2019-03-08 | 富通集团（天津）超导技术应用有限公司 | Superconduction fluid reservoir nitrogen recycling and utilize system |
| CN113197702A (en) * | 2021-05-19 | 2021-08-03 | 山东省畜产品质量安全中心(山东省畜禽屠宰技术中心) | Automatic injection device of liquid medicine for domestic pig |
| CN215987462U (en) * | 2021-06-16 | 2022-03-08 | 重庆云邦信联科技有限公司 | Shared infusion alarm |
| CN113921425A (en) * | 2021-09-30 | 2022-01-11 | 北京北方华创微电子装备有限公司 | Semiconductor cleaning apparatus and control method thereof |
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