CN205861511U - Saturated vapour pressure spiral P0 pipe and static method specific surface and Porosimetry - Google Patents
Saturated vapour pressure spiral P0 pipe and static method specific surface and Porosimetry Download PDFInfo
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- CN205861511U CN205861511U CN201620716311.2U CN201620716311U CN205861511U CN 205861511 U CN205861511 U CN 205861511U CN 201620716311 U CN201620716311 U CN 201620716311U CN 205861511 U CN205861511 U CN 205861511U
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- liquid nitrogen
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Abstract
This utility model discloses a kind of saturated vapour pressure spiral P0 pipe and static method specific surface and Porosimetry, and this spiral P0 pipe upper end is that the instrument of straight or S-shaped connects end, and lower end is the saturated vapor pressure P0 test lead of helical tubular structure.This spiral P0 pipe is arranged on static method specific surface and Porosimetry, is a saturated vapor pressure pipe being immersed in liquid nitrogen, is in same liquid nitrogen cup with sample cell.The spiral P0 pipe of this structure can not only directly record saturated vapor pressure P0 value, and add the contact area with liquid nitrogen surface, liquid nitrogen temperature can be reached faster, test result is made to be more nearly actual value, test dividing potential drop is made to more easily reach 0.99, total pore volume and average pore size are more accurate, improve the accuracy of test result.
Description
Technical field
This utility model relates to saturated vapour pressure spiral (P0) pipe of Porosimetry, particularly relates to a kind of static method ratio
The saturated vapour pressure spiral P0 pipe of surface and Porosimetry and static method specific surface and Porosimetry.
Background technology
At present, in static capacity method specific surface and Porosimetry test process, the pipe of test saturated vapor pressure is
It is used for testing saturated vapour pressure, in saturated vapor pressure pipe direct invasion to liquid nitrogen, is in same liquid nitrogen cup with sample cell.State
The saturated vapor pressure pipe that inside and outside static method specific surface and Porosimetry are used, saturated vapor pressure pipe is straight pipe, but this
The straight P0 pipe of structure is little due to the contact area with liquid nitrogen surface, can make to test saturated vapor pressure bigger than normal, compare actual value inclined
About 1～2%.
Utility model content
Based on the problem existing for above-mentioned prior art, this utility model provides a kind of saturated vapour pressure spiral P0 to manage and quiet
State method specific surface and Porosimetry, it is possible to reach liquid nitrogen temperature faster, solve the problem that the test of prior art P0 is bigger than normal.
For solving above-mentioned technical problem, this utility model provides a kind of saturated vapour pressure spiral P0 pipe, it is characterised in that should
Spiral P0 pipe upper end is that the instrument of straight or S-shaped connects end, and lower end is the saturated vapor pressure immersing liquid nitrogen of helical tubular structure
PO test lead.
Above-mentioned saturated vapour pressure spiral P0 pipe is any one in metallic coil, glass screw pipe, quartz serpentine pipe.
This utility model embodiment also provides for a kind of static method specific surface and Porosimetry, including: saturated vapor pressure pipe,
Described saturated vapor pressure pipe is saturated vapour pressure spiral P0 described in the utility model pipe, this saturated vapour pressure spiral P0 pipe upper end
Instrument connect end and be connected with instrument host, lower end as saturated vapor pressure P0 test lead helical tubular structure a part of at
More than the liquid nitrogen surface in liquid nitrogen cup, below the liquid nitrogen surface being partially in liquid nitrogen cup additionally.
The beneficial effects of the utility model are: this spiral P0 pipe is helix knot due to saturated vapor pressure P0 test lead
Structure, can be used in static method specific surface and Porosimetry, and the helix making this spiral P0 pipe is a part of more than liquid nitrogen surface,
Additionally it is partially immersed in the liquid nitrogen of below liquid nitrogen surface, and is in same liquid nitrogen cup with sample cell, can not only measure in real time
P0 value, the saturated vapor pressure P0 test lead of helical tubular structure adds the contact area with liquid nitrogen surface simultaneously, it is possible to faster
Reach liquid nitrogen temperature, solve the problem that the test of prior art P0 is bigger than normal, compare very with the saturated vapour pressure of spiral P0 pipe test
Real-valued test dividing potential drop can be made to more easily reach 0.99 by error control within 0.5%, total pore volume and average pore size are more
Accurately, improve measuring accuracy, this spiral P0 pipe, with relatively simple structure, well solves employing straight tube-like saturated vapor
Pressure pipe tests inaccurate problem.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of this utility model embodiment, required in embodiment being described below
The accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only enforcements more of the present utility model
Example, from the point of view of those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to these accompanying drawings
Obtain other accompanying drawings.
The structural representation of the saturated vapour pressure spiral P0 pipe that Fig. 1 provides for this utility model embodiment；
Static method specific surface that Fig. 2 provides for this utility model embodiment and the structural representation of Porosimetry；
In figure: 1 is saturated vapour pressure spiral P0 pipe, 11 is the instrument connection end of saturated vapour pressure spiral P0 pipe；12 is full
Saturated vapor pressure P0 test lead with vapour pressure spiral P0 pipe；2 is liquid nitrogen cup, and 21 is liquid nitrogen, and 3 is sample cell, and 4 is instrument master
Machine.
Detailed description of the invention
Below the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described reality
Executing example is only a part of embodiment of this utility model rather than whole embodiments.Based on embodiment of the present utility model, this
The every other embodiment that field those of ordinary skill is obtained under not making creative work premise, broadly falls into this practicality
Novel protection domain.
Below in conjunction with specific embodiment, spiral P0 of the present utility model pipe and static method specific surface and Porosimetry are made
Further illustrate.
As it is shown in figure 1, this utility model embodiment provides a kind of saturated vapour pressure spiral P0 pipe, can be used on static method and compare table
In face and Porosimetry, as saturated vapor pressure pipe, can be used for directly testing different adsorbate under different temperatures environment
Saturated vapour pressure (such as: the saturated vapour pressure of N2 under liquid nitrogen temperature), the upper end of this saturated vapour pressure spiral P0 pipe 1 is straight or S
The instrument of shape connects end 11, and lower end is the saturated vapor pressure P0 test lead 12 of helical tubular structure.
This saturated vapour pressure spiral P0 pipe can be any in metallic coil, glass screw pipe, quartz serpentine pipe etc.
A kind of.
As in figure 2 it is shown, this utility model embodiment also provides for a kind of static method specific surface and Porosimetry, including: full
With steam pressure pipe, sample cell 3, instrument host 4 and liquid nitrogen cup 2, saturated vapor pressure pipe is above-mentioned saturated vapour pressure spiral P0 pipe
1, the instrument of this saturated vapour pressure spiral P0 pipe 1 upper end connects end 11 and is connected with instrument host 4, is located at sample cell 3 side, with sample
QC 3 is immersed in same liquid nitrogen cup 2, and this spiral P0 pipe lower end is as the helical tubular structure of saturated vapor pressure P0 test lead 12
The liquid nitrogen that a part is in liquid nitrogen cup 2 more than 21, the liquid nitrogen being partially in liquid nitrogen cup 2 less than 21 additionally, this spiral shell
Rotation P0 pipe is managed as saturated vapour pressure spiral P0, can directly record adsorbate nitrogen at current liquid nitrogen bath by this spiral P0 pipe
Saturated vapor pressure P0 value in environment.
The above-mentioned mode arranging saturated vapour pressure spiral P0 pipe is because in liquid nitrogen cup, and minimum temperature region is not liquid nitrogen
Below face, and it is in the space high for about 10mm of more than liquid nitrogen surface, therefore the serpentine pipe of the pipe of spiral P0 described in test process
The setting of shape wants a part more than liquid nitrogen surface, is additionally partially immersed in the liquid nitrogen of below liquid nitrogen surface, and is in sample cell
In same liquid nitrogen cup, so can not only measure P0 value in real time, add the contact area with liquid nitrogen surface simultaneously, it is possible to faster
Reach liquid nitrogen temperature, solve the problem that the test of prior art P0 is bigger than normal.
In conjunction with static method specific surface and the Porosimetry of Fig. 2, its concrete test process is:
First in spiral P0 pipe 1, it is evacuated to vacuum, in spiral P0 pipe 1, is then slowly filled with high-purity Adsorbate Gas nitrogen
Gas, pressure will be gradually increasing, and along with being filled with of gas, when reaching saturated, the nitrogen continuing to be filled with will liquefy, spiral P0 pipe 1
In pressure by no longer being filled with and rise with nitrogen, the pressure after this is saturated is the adsorbate under current liquid nitrogen temperature environment
The saturated vapor pressure P0 of nitrogen.
The static method specific surface of this utility model embodiment offer and Porosimetry, owing to have employed saturated vapour pressure spiral shell
Rotation P0 pipe, and the part spiral-shaped design of employing that this spiral P0 pipe is immersed in liquid nitrogen, be possible not only to directly test saturated vapor
Pressure P0 value, the straight that simultaneously compares pipe adds the contact surface with liquid nitrogen surface as saturated vapor pressure pipe, spiral-shaped P0 pipe
Long-pending, it is possible to reach liquid nitrogen temperature faster so that the P0 value of test is more nearly actual value, can control error 0.5% with
In, make test dividing potential drop more easily reach 0.99, total pore volume and average pore size are more accurate, improve the precision of test.
The above, only this utility model preferably detailed description of the invention, but protection domain of the present utility model is not
Being confined to this, any those familiar with the art, in the technical scope that this utility model discloses, can readily occur in
Change or replacement, all should contain within protection domain of the present utility model.Therefore, protection domain of the present utility model should
It is as the criterion with the protection domain of claims.
Claims (3)
1. a saturated vapour pressure spiral P0 pipe, it is characterised in that this spiral P0 pipe upper end is that the instrument of straight or S-shaped connects
End, lower end is the saturated vapor pressure P0 test lead of helical tubular structure.
Saturated vapour pressure spiral P0 the most according to claim 1 manages, it is characterised in that described spiral P0 pipe is metal spiral
Pipe, glass screw pipe, quartz serpentine pipe in any one.
3. static method specific surface and a Porosimetry, including: saturated vapor pressure pipe, it is characterised in that described saturated vapor
Pressure pipe is the saturated vapour pressure spiral P0 pipe described in claim 1 or 2, and the instrument of this saturated vapour pressure spiral P0 pipe upper end connects
End is connected with instrument host, and lower end is in liquid nitrogen cup as a part for the helical tubular structure of saturated vapor pressure P0 test lead
Liquid nitrogen surface more than, below the liquid nitrogen surface being partially in liquid nitrogen cup additionally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620716311.2U CN205861511U (en) | 2016-07-07 | 2016-07-07 | Saturated vapour pressure spiral P0 pipe and static method specific surface and Porosimetry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620716311.2U CN205861511U (en) | 2016-07-07 | 2016-07-07 | Saturated vapour pressure spiral P0 pipe and static method specific surface and Porosimetry |
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| Publication Number | Publication Date |
|---|---|
| CN205861511U true CN205861511U (en) | 2017-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620716311.2U Active CN205861511U (en) | 2016-07-07 | 2016-07-07 | Saturated vapour pressure spiral P0 pipe and static method specific surface and Porosimetry |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520908A (en) * | 2018-12-29 | 2019-03-26 | 中国科学技术大学 | A kind of low temperature test device based on physical adsorption appearance and automatic liquid feeding nitrogen device |
-
2016
- 2016-07-07 CN CN201620716311.2U patent/CN205861511U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520908A (en) * | 2018-12-29 | 2019-03-26 | 中国科学技术大学 | A kind of low temperature test device based on physical adsorption appearance and automatic liquid feeding nitrogen device |
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