CN210465362U - Sample introduction device for oil chromatographic analysis - Google Patents
Sample introduction device for oil chromatographic analysis Download PDFInfo
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- CN210465362U CN210465362U CN201920646902.0U CN201920646902U CN210465362U CN 210465362 U CN210465362 U CN 210465362U CN 201920646902 U CN201920646902 U CN 201920646902U CN 210465362 U CN210465362 U CN 210465362U
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Abstract
The utility model relates to the technical field of oil chromatographic analysis, in particular to a sample feeding device for oil chromatographic analysis, which comprises an injector and a limiting device, wherein the injector comprises a piston assembly and a needle cylinder, the position of the needle cylinder is fixed, and the piston assembly comprises a piston rod and a piston fixed at one end of the piston rod; the limiting device is used for limiting the moving stroke of the piston rod and measuring the moving stroke. The utility model discloses a sampling device structure is comparatively simple, and it is comparatively convenient to use, and the back is injectd to the removal stroke when the piston rod, can ensure the unanimity of air input.
Description
Technical Field
The utility model belongs to the technical field of the oil chromatography technique and specifically relates to a sampling device that oil chromatography used.
Background
When carrying out insulating oil chromatographic analysis, need to inject quantitative gas into the chromatograph with the syringe manual work and carry out the analysis, present sampling device adopts the manual work to read the syringe and goes up the scale and confirm the air input, because of the manual reading error will lead to the gas of injecting into at every turn to have the difference, especially the chemical examination personnel is different, and the difference is bigger, finally leads to the human error of oil chromatographic analysis data.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can guarantee the unanimous sampling device for oil chromatographic analysis of air input when carrying out the chemical examination under same batch.
In order to achieve the purpose, the technical scheme adopted by the utility model is that the sample injection device for oil chromatographic analysis comprises an injector and a limiting device, wherein the injector comprises a piston assembly and a needle cylinder, the position of the needle cylinder is fixed, and the piston assembly comprises a piston rod and a piston fixed at one end of the piston rod; the limiting device is used for limiting the moving stroke of the piston rod and measuring the moving stroke.
Preferably, the limiting device at least comprises a vertical rod arranged in parallel with the piston rod, the vertical rod is fixed with the other end of the piston rod through a cross rod, and scale marks are arranged along the length direction of the vertical rod.
Preferably, the needle cylinder is fixed on a fixed seat, and the needle cylinder penetrates through the fixed seat.
Preferably, the vertical rod penetrates through the fixed seat.
Preferably, the limiting and adjusting device further comprises a limiting and adjusting block used for limiting the moving stroke of the vertical rod, the limiting and adjusting block is sleeved on the vertical rod below the fixing seat in a penetrating mode, and the limiting and adjusting block and the vertical rod are fixed through a fastening bolt.
Preferably, the fixing seat is a square fixing seat.
Preferably, the vertical rod and the cross rod are connected into a whole, and the cross rod and the piston rod are fixed in a detachable mode.
The utility model discloses simple structure easily operates, the biggest air input is adjustable, the gas input error that produces when can effectively avoiding oil chromatographic analysis.
Drawings
Fig. 1 is a schematic structural diagram of the oil chromatography sample injection device provided by the utility model.
Reference numerals
The device comprises an injector 1, a piston rod 11, a needle cylinder 12, a vertical rod 2, a cross rod 3, a fixed seat 4, a limit adjusting block 5 and a fastening bolt 6.
Detailed Description
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Referring to fig. 1, the present invention provides the following embodiments:
a sample introduction device for oil chromatographic analysis comprises an injector 1 and a limiting device, wherein the injector 1 comprises a piston assembly and a needle cylinder 12, the position of the needle cylinder is fixed, and the piston assembly comprises a piston rod 11 and a piston fixed at one end of the piston rod 11; the limiting device is used for limiting the moving stroke of the piston rod 11 and measuring the moving stroke.
As a preferred scheme, the limiting device at least comprises a vertical rod 2 which is parallel to the piston rod 11, the vertical rod 2 is fixed with the other end of the piston rod 11 through a cross rod 3, and scale marks are arranged along the length direction of the vertical rod 2.
As a further preferable scheme, the needle cylinder 12 is fixed on the fixed seat 4, and the needle cylinder penetrates through the fixed seat. Furthermore, a through hole for the vertical rod 2 to pass through can be further formed in the fixing seat, and the vertical rod 2 passes through the through hole and penetrates through the fixing seat 4. Still further, the fixing base 4 is a square fixing base, and therefore the bottom surface of the fixing base is perpendicular to the vertical rod, and the scale value on the vertical rod corresponding to the bottom surface of the fixing base can be conveniently checked by taking the bottom surface of the fixing base as a reference.
As the preferred scheme, still include the spacing regulating block 5 that is used for injecing the travel of montant 2, spacing regulating block wears to overlap on the montant 2 that is located fixing base 4 below, fixes spacing regulating block 5 with montant 2 through fastening bolt 6. Therefore, the distance between the top surface of the limit adjusting block 5 and the bottom surface of the mounting seat can be adjusted by adjusting the fixed position of the limit adjusting block 5 on the vertical rod 2. It can be understood that the area of spacing regulating block top surface is greater than the cross-sectional area that sets up on fixing base 4 and provide the through-hole that the montant passed to when guaranteeing that spacing regulating block 5 removes to the fixing base bottom surface, the spacing regulating block top surface of accessible supports the fixing base bottom surface, thereby carries out spacingly to the stroke of montant. Therefore, the distance between the top surface of the limiting adjusting block 5 and the bottom surface of the fixed seat 4 is the maximum stroke of the vertical rod moving upwards, and is also the maximum stroke of the piston rod. And after the position of the limiting adjusting block on the vertical rod is fixed, the maximum stroke of the piston rod is fixed, so that the extracted air inflow is fixed when the piston rod moves to the maximum stroke every time, and the problem that the extracted air inflow is inconsistent due to experience of different operators when the existing sampling device is used is avoided.
Preferably, the vertical rod 2 is connected with the cross rod 3 into a whole, and the cross rod 3 is detachably fixed with the piston rod 11 (fig. 1 shows a state that the cross rod is not fixed with the piston rod yet).
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made by those skilled in the art within the spirit and principle of the present invention, and these equivalent modifications or replacements are included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a sampling device for oil chromatographic analysis which characterized in that: the injection device comprises an injector and a limiting device, wherein the injector comprises a piston assembly and a needle cylinder, the position of the needle cylinder is fixed, and the piston assembly comprises a piston rod and a piston fixed at one end of the piston rod; the limiting device is used for limiting the moving stroke of the piston rod and measuring the moving stroke.
2. The sample introduction device for oil chromatography according to claim 1, characterized in that: the limiting device at least comprises a vertical rod which is arranged in parallel with the piston rod, the vertical rod is fixed with the other end of the piston rod through a cross rod, and scale marks are arranged along the length direction of the vertical rod.
3. The sample introduction device for oil chromatography according to claim 2, characterized in that: the needle cylinder is fixed on a fixed seat, and the needle cylinder penetrates through the fixed seat.
4. The sample introduction device for oil chromatography according to claim 3, characterized in that: the vertical rod penetrates through the fixing seat.
5. The sample introduction device for oil chromatography according to claim 4, characterized in that: the limiting adjusting block is sleeved on the vertical rod below the fixing seat in a penetrating mode, and the limiting adjusting block is fixed with the vertical rod through a fastening bolt.
6. The sample introduction device for oil chromatography according to any one of claims 3 to 5, wherein: the fixing seat is a square fixing seat.
7. The sample introduction device for oil chromatography according to any one of claims 2 to 5, characterized in that: the vertical rod and the transverse rod are connected into a whole, and the transverse rod and the piston rod are fixed in a detachable mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920646902.0U CN210465362U (en) | 2019-05-08 | 2019-05-08 | Sample introduction device for oil chromatographic analysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920646902.0U CN210465362U (en) | 2019-05-08 | 2019-05-08 | Sample introduction device for oil chromatographic analysis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210465362U true CN210465362U (en) | 2020-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920646902.0U Active CN210465362U (en) | 2019-05-08 | 2019-05-08 | Sample introduction device for oil chromatographic analysis |
Country Status (1)
| Country | Link |
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| CN (1) | CN210465362U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115407006A (en) * | 2022-09-27 | 2022-11-29 | 云南电网有限责任公司曲靖供电局 | Oil chromatogram sample injector |
-
2019
- 2019-05-08 CN CN201920646902.0U patent/CN210465362U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115407006A (en) * | 2022-09-27 | 2022-11-29 | 云南电网有限责任公司曲靖供电局 | Oil chromatogram sample injector |
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