CN216978750U - Gas permeation cell structure with variable area and gas permeation tester - Google Patents
Gas permeation cell structure with variable area and gas permeation tester Download PDFInfo
- Publication number
- CN216978750U CN216978750U CN202123446670.0U CN202123446670U CN216978750U CN 216978750 U CN216978750 U CN 216978750U CN 202123446670 U CN202123446670 U CN 202123446670U CN 216978750 U CN216978750 U CN 216978750U
- Authority
- CN
- China
- Prior art keywords
- test
- groove
- gas permeation
- sample
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model provides a gas permeation cell structure with a variable area and a gas permeation tester, wherein the gas permeation cell structure comprises: the test device comprises a first test cavity and a second test cavity, wherein the first test cavity is provided with a first groove, the second test cavity is provided with a second groove, and the opening of the first groove is opposite to the opening of the second groove; a sample support piece is arranged in the second groove, and a sample is placed between the sample support piece and the opening of the first groove; the test system further comprises a first seal for placing between the first test chamber and the test specimen and a second seal for placing between the test specimen support and the second test chamber; the utility model can conveniently replace the test area and meet the test requirements of customers on samples with different test areas.
Description
Technical Field
The utility model relates to the technical field of gas permeation testing, in particular to a gas permeation cell structure with a variable area and a gas permeation tester.
Background
The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
When a gas permeation test is performed, a gas permeation rate test system is used, and one of core components of the gas permeation rate test system is a gas permeation cell. For example, chinese patent CN202011049632.9 discloses a multi-cavity testing structure, system and method for membrane permeation detection, which includes at least one set of testing units, each set of testing unit includes two symmetrically disposed testing cavities, and each testing cavity is equivalent to a gas permeation cell.
The common gas permeation cell structure is divided into a first testing cavity and a second testing cavity, and each testing cavity is provided with a fixed testing area.
The inventor finds that a user may have a requirement for changing the test area during actual test, but the first test cavity and the second test cavity are connected with complex pipelines and lines, so that the two test cavities are very difficult to disassemble and replace, and the current gas permeation pool structure is difficult to meet the requirement for changing the test area of the user; in addition, the vent holes of the common gas permeation cells are generally in a straight hole structure, which can cause an airflow dead zone to be formed in a region far away from the vent holes, and only the test gas near the vent holes enters the vent holes, thereby affecting the test accuracy of the gas permeation cells.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model provides a variable-area gas permeation cell structure and a gas permeation tester, which can conveniently replace the test area and meet the test requirements of customers on samples with different test areas.
In order to achieve the purpose, the utility model adopts the following technical scheme:
in a first aspect, the present invention provides a variable area gas permeation cell structure.
A variable area gas permeation cell structure comprising: the test device comprises a first test cavity and a second test cavity, wherein the first test cavity is provided with a first groove, the second test cavity is provided with a second groove, and the opening of the first groove is opposite to the opening of the second groove;
a sample supporting piece is arranged in the second groove, and a sample is placed between the sample supporting piece and the opening of the first groove;
also included is a first seal for placement between the first test chamber and the test specimen and a second seal for placement between the test specimen support and the second test chamber.
Furthermore, the first test cavity is provided with at least one air path communicated with the first groove, and the position of the air path close to the first groove is of a flow guide structure.
Furthermore, the second test cavity is provided with at least one air path communicated with the second groove, and the position of the air path close to the second groove is of a flow guide structure.
Furthermore, a flow guide structure is arranged on the sample support piece.
Furthermore, the flow guide structure is a structure with a conical or stepped cross section area which is gradually increased.
By utilizing the variable-area gas permeation cell structure, the test area is changed by changing the sample support and the first test cavity.
A second aspect of the present invention provides a variable area gas permeation cell structure comprising: the test device comprises a first test cavity and a second test cavity, wherein the first test cavity is provided with a first groove, the second test cavity is provided with a second groove, and the opening of the first groove is opposite to the opening of the second groove;
a sample supporting piece is arranged in the second groove, and a sample is placed between the sample supporting piece and the opening of the first groove;
the test device further comprises a test sample pressing piece arranged between the first test cavity and the test sample, a first sealing piece used for being placed between the first test cavity and the test sample pressing piece, and a second sealing piece used for being placed between the test sample supporting piece and the second test cavity.
Furthermore, the first test cavity is provided with at least one air path communicated with the first groove, and the position of the air path close to the first groove is of a flow guide structure.
Furthermore, the second test cavity is provided with at least one air path communicated with the second groove, and the position of the air path close to the second groove is of a flow guide structure.
Furthermore, a flow guide structure is arranged on the sample support piece.
Furthermore, the flow guide structure is a structure with a conical or stepped cross section area which is gradually increased.
Further, the test piece device further comprises a third sealing member arranged between the test piece pressing member and the test piece.
By utilizing the gas permeation cell structure with the variable area, the test area is changed by changing the sample supporting piece and the sample pressing piece.
In a third aspect, the present invention provides a gas permeation testing apparatus comprising a variable area gas permeation cell structure according to the first or second aspect of the present invention.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the variable-area gas permeation cell structure and the gas permeation tester, the test area of the sample is changed by replacing the sample supporting pieces with different test areas, so that the flexible change of the test area is realized, and the test requirements of customers on the samples with different test areas are met.
2. According to the variable-area gas permeation cell structure and the gas permeation tester, the diversion structure is arranged at the position, close to the groove of the testing cavity, of the gas path of the testing cavity, so that the gas permeation cell can collect testing gas to the maximum extent to improve testing accuracy.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model.
Fig. 1 is a schematic diagram of a variable-area gas permeation cell structure provided in example 1 of the present invention.
Fig. 2 is a schematic diagram of a variable-area gas permeation cell structure provided in example 3 of the present invention.
Fig. 3 is a schematic diagram of a second test chamber structure with variable area provided in embodiments 1 and 3 of the present invention.
Fig. 4 is a schematic structural diagram of a sample support provided in examples 1 and 3 of the present invention.
The device comprises a first test cavity and a second test cavity, wherein 1, the first test cavity is formed in the first test cavity; 2. a first vent hole; 3. a first seal member; 4. a sample; 5. a second test chamber; 6. a second vent hole; 7. a sample support; 8. a second seal member; 9. a sample pressing member; 10. a third seal.
Detailed Description
The utility model is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the utility model as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the utility model. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
Example 1:
as shown in fig. 1, 3 and 4, embodiment 1 of the present invention provides a variable-area gas permeation cell structure, including: comprising a first test chamber 1 and a second test chamber 5.
The first testing chamber 1 and the second testing chamber 5 of the gas permeation cell of the present embodiment are both provided with corresponding grooves, including the first groove of the first testing chamber 1 and the second groove of the second testing chamber 5.
The first testing cavity 1 is provided with at least one first vent hole 2 (the first vent hole 2 extends out of the first testing cavity 1 through the air path), one end of the first vent hole 2 is communicated with the first groove, and a conical or step-shaped gradually-increasing flow guide structure is further arranged at the joint of the first vent hole 2 and the first groove, so that the gas diffusion efficiency is improved, and the testing precision is improved.
Similarly, the second testing cavity 5 is also provided with at least one second vent hole 6 (the second vent hole 6 extends out of the first testing cavity 1 through the air path), one end of the second vent hole 6 is communicated with the second groove, and a flow guide structure which is tapered or stepped and gradually increased is further arranged at the joint of the second vent hole 6 and the second groove, so that the gas diffusion efficiency is improved, and the testing precision is improved.
A sample support 7 and a sample 4 are also arranged between the first test chamber 1 and the second test chamber 5.
Specifically, the sample support 7 is placed in a second groove of the second testing chamber 5, a second sealing member 8 is further disposed between the sample support 7 and the second testing chamber 5, and the second sealing member 8 is mounted in a second sealing member groove provided on the sample support 7.
The second sealing element 8 is used for sealing between the second testing cavity 5 and the sample supporting element 7, and the sample supporting element 7 is further provided with a flow guide structure, so that the tested gas which permeates through the sample can be diffused into the second groove of the second testing cavity 5 more quickly.
A test sample 4 is arranged between the test sample support 7 and the first test cavity 1, a first sealing element 3 is further arranged between the test sample 4 and the first test cavity 1, the first sealing element 3 is installed in a first sealing element groove formed in the first test cavity 1, and the first sealing element 3 is used for sealing between the test sample 4 and the first test cavity 1.
With the variable area gas permeation cell structure described above, the test area is changed by modifying the sample support 7 and the first test chamber 1 before the test.
Example 2:
Example 3:
as shown in fig. 2, 3 and 4, embodiment 3 of the present invention provides a variable-area gas permeation cell structure, including: comprising a first test chamber 1 and a second test chamber 5.
The first testing chamber 1 and the second testing chamber 5 of the gas permeation cell of the present embodiment are both provided with corresponding grooves, including the first groove of the first testing chamber 1 and the second groove of the second testing chamber 5.
The first testing cavity 1 is provided with at least one first vent hole 2 (the first vent hole 2 extends out of the first testing cavity 1 through the air path), one end of the first vent hole 2 is communicated with the first groove, and a conical or step-shaped gradually-increasing flow guide structure is further arranged at the joint of the first vent hole 2 and the first groove, so that the gas diffusion efficiency is improved, and the testing precision is improved.
Similarly, the second testing cavity 5 is also provided with at least one second vent hole 6 (the second vent hole 6 extends out of the first testing cavity 1 through the air path), one end of the second vent hole 6 is communicated with the second groove, and a flow guide structure which is tapered or stepped and gradually increased is further arranged at the joint of the second vent hole 6 and the second groove, so that the gas diffusion efficiency is improved, and the testing precision is improved.
A sample support 7 and a sample 4 are also arranged between the first test chamber 1 and the second test chamber 5.
Specifically, the sample support 7 is placed in a second groove of the second test chamber 5, and a second sealing member 8 is further disposed between the sample support 7 and the second test chamber 5, and the second sealing member 8 is mounted in the second sealing member groove provided on the sample support 7.
The second sealing element 8 is used for sealing between the second testing cavity 5 and the sample supporting element 7, and the sample supporting element 7 is further provided with a flow guide structure, so that the tested gas which permeates through the sample can be diffused into the second groove of the second testing cavity 5 more quickly.
Still compress tightly 9 including the sample, sample compresses tightly 9 and is located between first test cavity 1 and the sample 4, and sample 4 is located sample and compresses tightly between 9 and the sample support piece 7, and first sealing member 3 is installed in the first sealing member recess that sets up on first test cavity 1, and first sealing member 3 is located between first test cavity 1 and the sample and compresses tightly 9 for it is sealed between first test cavity 1 and the sample compresses tightly 9.
A third sealing member 10 is further arranged between the sample pressing member 9 and the sample 4, and the third sealing member 10 is installed in a third sealing member groove arranged on the sample pressing member 9 and used for sealing between the sample pressing member 9 and the sample 4.
By utilizing the variable-area gas permeation cell structure, the test area can be changed by changing the sample supporting piece and the sample pressing piece before the test.
Example 4:
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 may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A gas permeation cell structure with variable area is characterized in that:
the method comprises the following steps: the test device comprises a first test cavity and a second test cavity, wherein the first test cavity is provided with a first groove, the second test cavity is provided with a second groove, and the opening of the first groove is opposite to the opening of the second groove;
a sample supporting piece is arranged in the second groove, and a sample is placed between the sample supporting piece and the opening of the first groove;
also included is a first seal for placement between the first test chamber and the test specimen and a second seal for placement between the test specimen support and the second test chamber.
2. The variable area gas permeation cell structure of claim 1, wherein:
the first test cavity is provided with at least one air passage communicated with the first groove, and the position of the air passage close to the first groove is of a flow guide structure;
alternatively, the first and second electrodes may be,
the second test cavity is provided with at least one air path communicated with the second groove, and the position of the air path close to the second groove is of a flow guide structure.
3. The variable area gas permeation cell structure of claim 1, wherein:
and a flow guide structure is arranged on the sample supporting piece.
4. A variable area gas permeation cell structure according to claim 2 or claim 3, wherein:
the flow guide structure is a structure with a conical or step-shaped gradually-increased sectional area.
5. A gas permeation cell structure with variable area is characterized in that:
the method comprises the following steps: the test device comprises a first test cavity and a second test cavity, wherein the first test cavity is provided with a first groove, the second test cavity is provided with a second groove, and the opening of the first groove is opposite to the opening of the second groove;
a sample supporting piece is arranged in the second groove, and a sample is placed between the sample supporting piece and the opening of the first groove;
the test device further comprises a test sample pressing piece arranged between the first test cavity and the test sample, a first sealing piece used for being placed between the first test cavity and the test sample pressing piece, and a second sealing piece used for being placed between the test sample supporting piece and the second test cavity.
6. The variable area gas permeation cell structure of claim 5, wherein:
the first test cavity is provided with at least one air passage communicated with the first groove, and the position of the air passage close to the first groove is of a flow guide structure;
alternatively, the first and second electrodes may be,
the second testing cavity is provided with at least one air path communicated with the second groove, and the position of the air path close to the second groove is of a flow guide structure.
7. The variable area gas permeation cell structure according to claim 5, wherein:
and a flow guide structure is arranged on the sample supporting piece.
8. The variable area gas permeation cell structure according to claim 6 or 7, wherein:
the flow guide structure is a structure with a conical or step-shaped gradually-increased sectional area.
9. The variable area gas permeation cell structure of claim 5, wherein: and a third seal disposed between the sample pressing member and the sample.
10. A gas permeation tester is characterized in that: a gas permeation cell structure comprising a variable area according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123446670.0U CN216978750U (en) | 2021-12-29 | 2021-12-29 | Gas permeation cell structure with variable area and gas permeation tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123446670.0U CN216978750U (en) | 2021-12-29 | 2021-12-29 | Gas permeation cell structure with variable area and gas permeation tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216978750U true CN216978750U (en) | 2022-07-15 |
Family
ID=82350404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123446670.0U Active CN216978750U (en) | 2021-12-29 | 2021-12-29 | Gas permeation cell structure with variable area and gas permeation tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216978750U (en) |
-
2021
- 2021-12-29 CN CN202123446670.0U patent/CN216978750U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2020177773A1 (en) | Multi-channel microfluidic blood coagulation measurement chip having five-layer structure | |
| US7575722B2 (en) | Microfluidic device | |
| US10333162B2 (en) | Methods and systems for detecting leaks in a fuel cell stack | |
| CN113759137B (en) | Sample detection device and sample detection method | |
| US6585937B1 (en) | Electrochemical analysis system | |
| CN102437005B (en) | Membrane feeding device on gas analysis mass spectrometer | |
| CN216978750U (en) | Gas permeation cell structure with variable area and gas permeation tester | |
| CN106483180A (en) | Blood gas analyzer and its vim and vigour biochemical test card | |
| CN114486672A (en) | Variable-area gas permeation cell structure, gas permeation tester and operation method | |
| CN207570732U (en) | A kind of MEA detects fixture | |
| CN106483179A (en) | Blood gas analyzer and its vim and vigour biochemical test card | |
| CN205815490U (en) | The fixture of external pressure air inlet test doughnut membrane aperture and bubble platen press Porosimetry | |
| CN106959332B (en) | The automatic fine sampling device and its control method of electrophoresis detection instrument | |
| CN202351156U (en) | Counting chamber and blood analyzer comprising same | |
| CN100587440C (en) | Double polar plate flow field liquid visual apparatus and method | |
| CN213866136U (en) | Single cell capture device based on micro-fluidic technology | |
| CN111495449B (en) | Detection chip based on micro-fluidic technology | |
| CN219495586U (en) | Air tightness detection device and test system | |
| CN214471552U (en) | Air tightness detection device for membrane electrode assembly | |
| CN217359612U (en) | Micro device for constructing oxygen concentration gradient | |
| CN216081901U (en) | Air tightness test tool capable of testing multi-path radio frequency cable assembly | |
| CN219203092U (en) | Multipath sample injection system suitable for process mass spectrometer | |
| CN211626814U (en) | Fixing device for detecting leakage of single plate of bipolar plate of fuel cell | |
| CN210090369U (en) | Multi-channel surface acoustic wave biosensor detection clamp and system | |
| CN219891036U (en) | Hollow fiber membrane gas permeability test cavity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |