CN111610217A - Sample testing device for nuclear magnetic resonance system - Google Patents
Sample testing device for nuclear magnetic resonance system Download PDFInfo
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- CN111610217A CN111610217A CN201911399209.9A CN201911399209A CN111610217A CN 111610217 A CN111610217 A CN 111610217A CN 201911399209 A CN201911399209 A CN 201911399209A CN 111610217 A CN111610217 A CN 111610217A
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- sample
- temperature control
- magnetic resonance
- nuclear magnetic
- control structure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N24/00—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects
- G01N24/08—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using nuclear magnetic resonance
- G01N24/081—Making measurements of geologic samples, e.g. measurements of moisture, pH, porosity, permeability, tortuosity or viscosity
Abstract
The invention relates to the technical field of sample testing devices, in particular to a sample testing device for a nuclear magnetic resonance system, which comprises: print integrated into one piece's casing and locate through 3D helical structure in the casing lateral wall, be equipped with the sample in the casing and place the chamber, helical structure follows the sample is placed chamber circumference and is arranged, just it is right to be used for in the helical structure the sample places the third circulation liquid that the sample temperature in the chamber was adjusted, and helical structure import and helical structure export are located the same terminal surface in chamber is placed to the sample. The invention provides a sample testing device for a nuclear magnetic resonance system, which can realize accurate sample environment temperature control.
Description
Technical Field
The invention relates to the technical field of sample testing devices, in particular to a sample testing device for a nuclear magnetic resonance system.
Background
The conventional frozen soil environment simulation system used at present comprises a vertically placed constant temperature box, a cylindrical mold, a sample upper end temperature controller, a sample lower end temperature controller, a sample body temperature measurement system, a deformation measurement device at the upper end of a sample, a water supplementing device and a sample mold. The temperature controller at the upper end and the temperature controller at the lower end of the sample are generally made of metal structures, such as copper and aluminum, the temperature sensor generally adopts PT100, and the sample mold is made of organic glass or PVC materials. In the nuclear magnetic resonance system, the metal material or the organic glass material can generate an interference signal to the nuclear magnetic resonance system or make the nuclear magnetic equipment incapable of working normally, and the conventional frozen soil environment simulation system can not realize accurate sample environment temperature control.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to overcome the defects that the frozen soil environment simulation system in the prior art cannot be directly applied to the nuclear magnetic resonance system and cannot realize accurate sample environment temperature control, so as to provide a sample testing device for the nuclear magnetic resonance system, which can realize accurate sample environment temperature control.
In order to solve the above technical problem, the present invention provides a sample testing apparatus for a nuclear magnetic resonance system, including:
print integrated into one piece's casing and locate through 3D helical structure in the casing lateral wall, be equipped with the sample in the casing and place the chamber, helical structure follows the sample is placed chamber circumference and is arranged, just it is right to be used for in the helical structure the sample places the third circulation liquid that the sample temperature in the chamber was adjusted, and helical structure import and helical structure export are located the same terminal surface in chamber is placed to the sample.
Sample testing arrangement for nuclear magnetic resonance system, helical structure includes first spiral pipe and the second spiral pipe that the spiral opposite direction set up, the export of first spiral pipe with the import intercommunication of second spiral pipe, the import of first spiral pipe with the export of second spiral pipe is all located the up end in chamber is placed to the sample.
The sample testing device for the nuclear magnetic resonance system further comprises a plurality of first temperature sensors which are arranged along the axial direction of the shell at intervals and penetrate through the side wall of the shell to extend to the sample placing cavity.
Sample testing arrangement for nuclear magnetic resonance system the top that the chamber was placed to the sample is provided with 3D and prints fashioned first temperature control structure, first temperature control structure is last to be equipped with first circulation chamber, the first circulation liquid import and the first circulation liquid export in first circulation chamber are located on the top surface of first temperature control structure.
The sample testing device for the nuclear magnetic resonance system is characterized in that a second temperature sensor is further arranged on the first temperature control structure, and the second temperature sensor extends into the first circulation cavity.
The nuclear magnetic resonance system sample testing device is characterized in that a 3D printing forming second temperature control structure is arranged at the bottom of the sample placing cavity, a second circulating cavity is arranged on the second temperature control structure, and a second circulating liquid inlet and a second circulating liquid outlet of the second circulating cavity are arranged on the bottom surface of the second temperature control structure.
The sample testing device for the nuclear magnetic resonance system is characterized in that a third circulating cavity is further arranged on the second temperature control structure, and a water supplementing inlet and a water supplementing outlet of the third circulating cavity are arranged on the bottom surface of the second temperature control structure.
The sample testing device for the nuclear magnetic resonance system is characterized in that the second temperature control structure is further provided with a third temperature sensor, and the third temperature sensor extends into the second circulation cavity.
The sample testing device for the nuclear magnetic resonance system is characterized in that a filtering structure is arranged on the top surface of the second temperature control structure, and the pore diameter of the filtering structure is smaller than the particle size of the sample.
The sample testing device for the nuclear magnetic resonance system is characterized in that annular sealing structures are arranged on the peripheries of the top surfaces of the first temperature control structure and the second temperature control structure.
The technical scheme of the invention has the following advantages:
1. according to the sample testing device for the nuclear magnetic resonance system, the shell and the spiral structure arranged in the side wall of the shell are integrally formed through 3D printing, so that the sample testing device is not only suitable for the nuclear magnetic resonance system, but also can increase the volume of the spiral structure as much as possible in the effective space of the side wall of the shell so as to increase the contact area with a sample; helical structure places chamber circumference along the sample and arranges, and helical structure import and helical structure export are located the same terminal surface that the chamber was placed to the sample, and the temperature gradient that has reduced the sample to the at utmost is poor, has realized the accurate control to sample ambient temperature.
2. According to the sample testing device for the nuclear magnetic resonance system, the rotating directions of the first spiral pipe and the second spiral pipe are opposite, one inlet and one outlet are communicated to form a double-spiral structure, so that circulating liquid enters the bottom from the upper end of the sample placing cavity and then circulates to the upper end from the bottom to be output, the temperature difference of samples at different depths is reduced, and the accurate control of the environmental temperature of the samples is realized.
3. According to the sample testing device for the nuclear magnetic resonance system, the first temperature control structures and the second temperature control structures are arranged at the top and the bottom of the sample placing cavity, so that the independent temperature control of the upper end face and the lower end face of a sample is realized, and the test requirements are met.
4. According to the sample testing device for the nuclear magnetic resonance system, the annular sealing structures are arranged on the peripheries of the top surfaces of the first temperature control structure and the second temperature control structure, so that the whole sample placing cavity forms a closed space, and the vacuumizing treatment is convenient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of a sample testing device for a nuclear magnetic resonance system according to the present invention;
FIG. 2 is a top view of the housing of FIG. 1;
FIG. 3 is a top view of the first temperature control structure of FIG. 1;
FIG. 4 is a bottom view of the second temperature control structure of FIG. 1;
fig. 5 is a top view of the filter structure of fig. 1.
Description of reference numerals:
1. a housing; 2. a helical structure; 3. a handle; 4. a sample placement chamber; 5. an inlet of the helical structure; 6. a helical outlet; 7. a first temperature sensor; 8. a first temperature control structure; 9. a first circulation chamber; 10. a first circulating liquid inlet; 11. a first circulating liquid outlet; 12. a second temperature sensor; 13. a second temperature control structure; 14. a second circulation chamber; 15. a second circulating liquid inlet; 16. a second circulating liquid outlet; 17. a pressure head; 18. a water replenishing inlet; 19. a water supplement outlet; 20. a third temperature sensor; 21. a filter structure; 22. an annular seal structure.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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 invention.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
In one embodiment of the sample testing device for an nmr system shown in fig. 1 to 5, the sample in this embodiment is frozen earth, and includes a housing 1 integrally formed by 3D printing and a spiral structure 2 provided in a side wall of the housing 1. The shell 1 is a cylinder, and the top of the shell 1 is provided with a handle 3 which is convenient to take. Be equipped with sample in the casing 1 and place chamber 4, sample is placed chamber 4 and is close to casing 1 lower part setting, and during the test, frozen soil is placed in sample is placed chamber 4. Helical structure 2 is followed 4 circumference of chamber are placed to the sample are arranged, and the hoop winding is in the periphery that the chamber 4 was placed to the sample promptly, just built-in helical structure 2 is used for right the sample temperature in the chamber 4 was placed to the sample carries out the third circulation liquid of adjusting, and helical structure import 5 and helical structure export 6 are located the up end in chamber 4 is placed to the sample.
Specifically, helical structure 2 includes first spiral pipe and the second spiral pipe that the spiral direction opposite set up, the export of first spiral pipe with the import intercommunication of second spiral pipe, the import of first spiral pipe with the export of second spiral pipe is all located the up end in chamber 4 is placed to the sample. During the import of circulation liquid first spiral pipe got into first spiral pipe, got into the second spiral pipe through the import of second spiral pipe when flowing the export to first spiral pipe, upwards flowed to the export of second spiral pipe along the second spiral pipe again, the circulation liquid that from this flows through the second spiral pipe has equalled the temperature drop of the circulation liquid that flows through first spiral pipe in the different degree of depth departments of frozen soil for the temperature of the different degree of depth departments of frozen soil tends to the same, has realized the accurate control to sample ambient temperature.
For the inside temperature of real time monitoring frozen soil, follow the axial interval of casing 1 is provided with a plurality of first temperature sensor 7, and the through-hole has been seted up to the relevant position of casing 1, and first temperature sensor 7 passes through-hole on the casing 1 lateral wall extends to chamber 4 is placed to the sample.
In order to realize controlling the temperature alone to frozen soil up end the top that the chamber 4 was placed to the sample is provided with 3D and prints fashioned first temperature control structure 8, be equipped with first circulation chamber 9 on the first temperature control structure 8, first circulation chamber 9 is close to the sample and places chamber 4 setting, first circulation liquid import 10 and first circulation liquid export 11 in first circulation chamber are located on the top surface of first temperature control structure 8.
In order to monitor the temperature of the upper part of the frozen soil in real time, a second temperature sensor 12 is further arranged on the first temperature control structure 8, and the second temperature sensor 12 penetrates through a through hole formed in the first temperature control structure 8 and extends into the first circulation cavity 9.
In order to realize the individual accuse temperature of terminal surface under the frozen soil the bottom that the chamber 4 was placed to the sample is provided with 3D and prints fashioned second accuse temperature structure 13, be equipped with second circulation chamber 14 on the second accuse temperature structure 13, second circulation chamber 14 is close to the sample and places the chamber 4 setting, second circulation liquid inlet 15 and the second circulation liquid outlet 16 in second circulation chamber 14 are located on the bottom surface of second accuse temperature structure 13. In order to ensure that the second temperature control structure 13 is firmly installed, a pressure head 17 is arranged below the second temperature control structure 13, and the pressure head 17 is tightly matched with the shell 1.
Still be equipped with the third circulation chamber on the second accuse temperature structure 13, the moisturizing entry 18 and the moisturizing export 19 in third circulation chamber are located on the bottom surface of second accuse temperature structure 13, the opening that chamber 4 intercommunication was placed with the sample in third circulation chamber still has for moisturizing in to frozen soil, in order to conveniently carry out the benefit drainage test. The third circulation chamber is not communicated with the second circulation chamber 14 to be communicated with different fluids.
In order to monitor the temperature of the lower part of the frozen soil in real time, the second temperature control structure 13 is further provided with a third temperature sensor 20, and the third temperature sensor 20 passes through a through hole formed in the second temperature control structure 13 and extends into the second circulation cavity 14.
Be equipped with filtration 21 between second accuse temperature structure 13's top surface and the third circulation chamber, filtration 21 is for printing fashioned filter screen through 3D, and the aperture of filter screen is less than the particle diameter of sample prevents that the sample granule from falling into in the third circulation chamber. A groove body for installing the filtering structure 21 is arranged at a corresponding position on the top surface of the second temperature control structure 13.
In order to ensure the tightness in the sample placing cavity 4, the peripheries of the top surfaces of the first temperature control structure 8 and the second temperature control structure 13 are both provided with a sealing ring as an annular sealing structure 22.
The sample testing device of the embodiment can apply the lowest environment temperature of-30 ℃, the first temperature control structure at the upper end of the sample can apply the lowest temperature of-40 ℃, the second temperature control structure at the lower end of the sample can apply the lowest temperature of-30 ℃, the temperature control structure is stable, and the precision can reach 0.1 ℃.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A sample testing device for a nuclear magnetic resonance system, comprising:
print integrated into one piece's casing (1) and locate through 3D helical structure (2) in casing (1) lateral wall, it places chamber (4) to be equipped with the sample in casing (1), helical structure (2) are followed the sample is placed chamber (4) circumference and is arranged, just built-in helical structure (2) be used for right the sample places the third circulation liquid that the sample temperature in chamber (4) was adjusted, and helical structure import (5) and helical structure export (6) are located the same terminal surface in chamber (4) is placed to the sample.
2. The device for testing the sample for the nuclear magnetic resonance system according to claim 1, wherein the spiral structure (2) comprises a first spiral pipe and a second spiral pipe which are arranged in opposite spiral directions, an outlet of the first spiral pipe is communicated with an inlet of the second spiral pipe, and the inlet of the first spiral pipe and the outlet of the second spiral pipe are both arranged on the upper end surface of the sample placing cavity (4).
3. The device for testing samples for nuclear magnetic resonance systems according to claim 1 or 2, further comprising a plurality of first temperature sensors (7) disposed at intervals along the axial direction of the housing (1) and extending through the side wall of the housing (1) into the sample placement chamber (4).
4. The device for testing the sample for the nuclear magnetic resonance system according to any one of claims 1 to 3, wherein a first temperature control structure (8) formed by 3D printing is arranged on the top of the sample placing cavity (4), a first circulating cavity (9) is arranged on the first temperature control structure (8), and a first circulating liquid inlet (10) and a first circulating liquid outlet (11) of the first circulating cavity (9) are arranged on the top surface of the first temperature control structure (8).
5. The device for testing samples for nuclear magnetic resonance systems according to claim 4, characterized in that a second temperature sensor (12) is further provided on the first temperature control structure (8), the second temperature sensor (12) extending into the first circulation chamber (9).
6. The device for testing the sample for the nuclear magnetic resonance system according to claim 4, wherein a second temperature control structure (13) formed by 3D printing is arranged at the bottom of the sample placing cavity (4), a second circulating cavity (14) is arranged on the second temperature control structure (13), and a second circulating liquid inlet (15) and a second circulating liquid outlet (16) of the second circulating cavity (14) are arranged on the bottom surface of the second temperature control structure (13).
7. The device for testing the sample for the nuclear magnetic resonance system according to claim 6, wherein a third circulation cavity is further provided on the second temperature control structure (13), and a water replenishing inlet (18) and a water replenishing outlet (19) of the third circulation cavity are provided on a bottom surface of the second temperature control structure (13).
8. The device for testing samples for nuclear magnetic resonance systems according to claim 6, characterized in that said second temperature control structure (13) is further provided with a third temperature sensor (20), said third temperature sensor (20) extending into said second circulation chamber (14).
9. The device for testing the sample for the nuclear magnetic resonance system according to claim 6, wherein a filtering structure (21) is provided on the top surface of the second temperature control structure (13), and the pore size of the filtering structure (21) is smaller than the particle size of the sample.
10. The device for testing the sample for the nuclear magnetic resonance system according to any one of claims 6 to 9, wherein an annular sealing structure (22) is arranged on the periphery of the top surface of each of the first temperature control structure (8) and the second temperature control structure (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911399209.9A CN111610217A (en) | 2019-12-30 | 2019-12-30 | Sample testing device for nuclear magnetic resonance system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911399209.9A CN111610217A (en) | 2019-12-30 | 2019-12-30 | Sample testing device for nuclear magnetic resonance system |
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| CN111610217A true CN111610217A (en) | 2020-09-01 |
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| CN201911399209.9A Pending CN111610217A (en) | 2019-12-30 | 2019-12-30 | Sample testing device for nuclear magnetic resonance system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116068470A (en) * | 2023-03-07 | 2023-05-05 | 吉林大学 | Sample temperature control device in nuclear magnetic resonance testing process |
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2019
- 2019-12-30 CN CN201911399209.9A patent/CN111610217A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116068470A (en) * | 2023-03-07 | 2023-05-05 | 吉林大学 | Sample temperature control device in nuclear magnetic resonance testing process |
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