CN216978746U - Automatic flow control device for gas permeation test and gas permeation tester - Google Patents
Automatic flow control device for gas permeation test and gas permeation tester Download PDFInfo
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Abstract
The utility model provides an automatic flow control device for gas permeation test and a gas permeation tester, wherein the automatic flow control device comprises: a regulating valve and an air resistance component; the air inlet end of the regulating valve is communicated with the air outlet end of the first pipeline, the air inlet end of the first pipeline is used for being communicated with the air supply device, and the air outlet end of the regulating valve is communicated with the air inlet end of the second pipeline; the gas outlet end of the second pipeline is communicated with the gas inlet ends of at least two branch pipelines, and the gas outlet end of each branch pipeline is used for being communicated with the gas inlet end of one gas permeation testing pool; each branch pipeline is provided with an air resistance component, and an adjusting shaft of the adjusting valve is connected with the output end of the driving mechanism; the utility model realizes automatic flow adjustment and avoids test result errors caused by individual differences of a plurality of automatic regulating valves.
Description
Technical Field
The utility model relates to the technical field of gas permeation tests, in particular to an automatic flow control device for a gas permeation test 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.
The gas permeability tester has strict requirements on the flow of the carrier gas when performing gas permeability test, and the test result has larger error when the flow of the carrier gas is larger than a specified value or smaller than the specified value. Two common carrier gas flow control methods of multiple groups of gas permeation cells are provided, one method is to connect a manual regulating valve to the upstream, namely the gas inlet end, of each group of gas permeation cells for manual regulation; and the other is that an automatic regulating valve is connected to the upstream of each group of gas permeation cells, namely the gas inlet end.
The inventors found that the above control method has the following problems:
in the first method, each regulating valve is regulated manually when the regulating valve is required, so that the precision is low, and the difference of the test results is large due to different regulating precisions caused by different operators; in addition, manual operation is difficult to achieve 24-hour duty, and the test result is incorrect due to the fact that the optimal adjusting time is missed.
In the second method, an automatic regulating valve is connected to the upstream, i.e., the gas inlet end, of each group of gas permeation cells, so that automatic regulation can be realized, but the regulating accuracy of a plurality of automatic regulating valves has slight individual difference, so that the test results of each group of gas permeation cells are different.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model provides an automatic flow control device for gas permeation test and a gas permeation tester, which realize automatic flow adjustment and avoid test result errors caused by individual differences of a plurality of automatic regulating valves.
In order to achieve the purpose, the utility model adopts the following technical scheme:
in a first aspect the present invention provides an automated flow control device for gas permeation testing.
An automated flow control device for gas permeation testing, comprising: a regulating valve and an air resistance component;
the air inlet end of the regulating valve is communicated with the air outlet end of the first pipeline, the air inlet end of the first pipeline is used for being communicated with the air supply device, and the air outlet end of the regulating valve is communicated with the air inlet end of the second pipeline;
the gas outlet end of the second pipeline is communicated with the gas inlet ends of at least two branch pipelines, and the gas outlet end of each branch pipeline is used for being communicated with the gas inlet end of one gas permeation testing pool;
each branch pipeline is provided with an air resistance component, and the adjusting shaft of the adjusting valve is connected with the output end of the driving mechanism.
Furthermore, the driving mechanism is a driving motor, and the output end of the driving motor is connected with the adjusting shaft of the adjusting valve through a coupler.
Furthermore, the gas supply device also comprises a pressure sensing element, wherein the gas outlet end of the pressure sensing element is communicated with the gas inlet end of the regulating valve through a pipeline, and the gas inlet end of the pressure sensing element is communicated with a gas supply device.
Further, the air resistance component is a needle valve or a capillary pipeline.
Further, the types and structural parameters of the air resistance components are the same.
Furthermore, the device also comprises a flow sensing element, and the gas inlet end of the flow sensing element is communicated with the gas outlet end of the gas permeation testing pool through a pipeline.
Furthermore, a switching valve is arranged on a pipeline between the gas inlet end of the flow sensing element and the gas outlet end of the gas permeation testing cell.
In a second aspect the present invention provides an automated flow control device for gas permeation testing.
An automated flow control device for gas permeation testing, comprising: a regulating valve and an air resistance component;
the air inlet end of the regulating valve is communicated with the air outlet end of the first pipeline, the air inlet end of the first pipeline is used for being communicated with the air supply device, and the air outlet end of the regulating valve is communicated with the air inlet end of the second pipeline;
the gas outlet end of the second pipeline is divided into at least two branch pipelines, and the gas outlet end of each branch pipeline is communicated with the gas inlet end of one gas permeation testing pool;
each branch pipeline is provided with an air resistance component, and the adjusting shaft of the adjusting valve is connected with the output end of the driving mechanism.
Furthermore, the driving mechanism is a driving motor, and the output end of the driving motor is connected with the adjusting shaft of the adjusting valve through a coupler.
Furthermore, the gas supply device also comprises a pressure sensing element, wherein the gas outlet end of the pressure sensing element is communicated with the gas inlet end of the regulating valve through a pipeline, and the gas inlet end of the pressure sensing element is communicated with a gas supply device.
Further, the air resistance component is a needle valve or a capillary pipeline.
Further, the types and structural parameters of the air resistance components are the same.
Furthermore, the device also comprises a flow sensing element, and the gas inlet end of the flow sensing element is communicated with the gas outlet end of the gas permeation testing pool through a pipeline.
Furthermore, a switching valve is arranged on a pipeline between the gas inlet end of the flow sensing element and the gas outlet end of the gas permeation testing cell.
A third aspect of the utility model provides a gas permeation tester comprising: at least one automated flow control device for gas permeation testing as described in the first or second aspect and at least two gas permeation testing cells.
Further, the gas permeation testing cell comprises a first testing cavity and a second testing cavity, wherein the first testing cavity is provided with a first groove, the second testing cavity is provided with a second groove, the opening of the first groove is opposite to the opening of the second groove, and a sample to be tested is placed between the opening of the first groove and the opening of the second groove;
the first test cavity is provided with a first air inlet pipeline and a first exhaust pipeline which are communicated with the first groove, and the second test cavity is provided with a second air inlet pipeline and a second exhaust pipeline which are communicated with the second groove.
Compared with the prior art, the utility model has the beneficial effects that:
1. the automatic flow control device for gas permeation testing and the gas permeation tester realize automatic flow adjustment of carrier gas, save labor and avoid testing result errors caused by individual difference of a plurality of automatic adjusting valves.
2. The automatic flow control device for gas permeation test and the gas permeation tester only adjust the total gas flow when automatically adjusting the gas flow, and avoid errors caused by individual differential pressure of a plurality of adjusting valves.
3. According to the automatic flow control device for the gas permeation test and the gas permeation tester, the gas resistance values of all the gas resistance components are the same, and the gas flow of all the gas resistance components and the gas permeation cell is the same, so that more accurate carrier gas flow control is realized.
Advantages of additional aspects of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
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 connection diagram of a use state of an automatic flow control device for gas permeation testing according to embodiment 1 of the present invention.
Fig. 2 is a schematic connection diagram of a use state of an automatic flow control device for gas permeation testing according to embodiment 4 of the present invention.
Wherein, 1, an air source; 2. a drive motor; 3. a coupling; 4. adjusting a valve; 5. a gas-resistant member; 6. a first test chamber; 7. a sample; 8. a second test chamber; 9. a flow sensing element; 10. a pressure sensing element.
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 utility model may be combined with each other without conflict.
Example 1:
as shown in fig. 1, embodiment 1 of the present invention provides an automatic flow control device for gas permeation testing, which includes a driving mechanism, a regulating valve 4 and a gas blocking component 5, wherein a regulating shaft of the regulating valve 4 is connected with an output end of the driving mechanism.
In this embodiment, the driving mechanism preferably employs a driving motor 2 and a coupling 3, one end of the coupling 3 is connected to the adjusting shaft of the adjusting valve 4, and the other end is connected to the output shaft of the driving motor 2.
It is understood that in other embodiments, other driving mechanisms may be adopted to drive the adjusting shaft of the adjusting valve 4, for example, an air cylinder mechanism or an electric cylinder mechanism, and those skilled in the art may select the driving mechanism according to specific working conditions, which is not described herein again.
In this embodiment, the air inlet end of the regulating valve 4 is communicated with the air source 1 through a first pipeline, the air outlet end of the regulating valve 4 is communicated with the air inlet end of a second pipeline, the air outlet end of the second pipeline is communicated with the air inlet ends of at least two branch pipelines, the air outlet end of each branch pipeline is communicated with the air inlet end of a gas permeation testing tank, and an air resistance component 5 is arranged on each branch pipeline.
In this embodiment, the air-blocking component 5 may be a needle valve or a capillary tube or other component for adjusting the resistance of the tube, and the type and the structural parameters of each air-blocking component 5 of the same device are the same.
The working principle is as follows:
before working, each gas resistance component 5 is adjusted in advance, so that the gas resistance values of all the gas resistance components 5 are the same, and the resistance values are far larger than the gas resistance values of other components in the pipeline. Carrier gas enters a regulating valve 4 from a gas source through a pipeline, a driving motor 2 on the regulating valve 4 drives the regulating valve 4 through a coupler 3 to regulate the flow and pressure of the carrier gas, the carrier gas after flow and pressure regulation respectively enters each gas resistance component 5, and because the gas resistance values of all the gas resistance components 5 are the same, the gas flow passing through all the gas resistance components 5 and a gas permeation pool are the same, and when the regulating valve 4 is regulated through the driving motor 2, the gas flow passing through the gas permeation pool is regulated.
Example 2:
an embodiment 2 of the present invention provides an automatic flow control device for a gas permeation test, including: a regulating valve and a gas resistance component;
the air inlet end of the regulating valve is communicated with the air outlet end of the first pipeline, the air inlet end of the first pipeline is used for being communicated with the air supply device, and the air outlet end of the regulating valve is communicated with the air inlet end of the second pipeline;
the gas outlet end of the second pipeline is divided into at least two branch pipelines, and the gas outlet end of each branch pipeline is communicated with the gas inlet end of one gas permeation testing pool;
each branch pipeline is provided with an air resistance component, and the adjusting shaft of the adjusting valve is connected with the output end of the driving mechanism.
In this embodiment, the preferred driving mechanism is a driving motor, and an output end of the driving motor is connected with the adjusting shaft of the adjusting valve through a coupler.
It is understood that, in other embodiments, other driving mechanisms may be used to drive the adjusting shaft of the adjusting valve 4, for example, a cylinder mechanism or an electric cylinder mechanism, and those skilled in the art may select the driving mechanism according to specific operating conditions, which will not be described herein again.
In this embodiment, the air-blocking component may be a needle valve or a capillary tube or other component for adjusting the resistance of the tube, and the type and the structural parameters of each air-blocking component of the same device are the same.
The working principle is as follows:
before work, each gas resistance component is adjusted in advance, so that the gas resistance values of all the gas resistance components are the same, and the resistance values are far larger than the gas resistance values of other components in the pipeline. The carrier gas enters the regulating valve from the gas source through the pipeline, and the driving motor on the regulating valve drives the regulating valve through the coupler to regulate the flow and pressure of the carrier gas. The carrier gas after flow and pressure regulation respectively enters each gas resistance part, and the gas resistance values of all the gas resistance parts are the same, so that the gas flow passing through all the gas resistance parts and the gas permeation pool are the same, and when the regulating valve is regulated by the driving motor, the gas flow passing through the gas permeation pool is regulated.
Example 3:
Each gas permeation test cell includes: the test device comprises a first test cavity 6 and a second test cavity 8, wherein the first test cavity 6 is provided with a first groove, the second test cavity 8 is provided with a second groove, the opening of the first groove is opposite to the opening of the second groove in position, and a sample 7 to be tested is placed between the opening of the first groove and the opening of the second groove.
The first test cavity 6 is provided with a first air inlet pipeline and a first exhaust pipeline which are communicated with the first groove, and the second test cavity 8 is provided with a second air inlet pipeline and a second exhaust pipeline which are communicated with the second groove.
Example 4:
in the embodiment, a pressure sensing element 10 is added in a pipeline at the input end of the regulating valve 4 on the basis of the embodiment 1, and a flow sensing element 9 is added in a pipeline at the output end of the second testing cavity 8.
It should be noted that the pressure sensing element 10 and the flow sensing element 9 may be present at the same time, or only the flow sensing element 9 or only the pressure sensing element 10 may be present.
In addition, a flow sensing element 9 may be disposed at the output end of each second testing chamber 8 of the multiple groups of permeation cells, or only one flow sensing element 9 may be disposed at the output end of one group of second testing chambers 8, or a switching valve may be disposed on the output end pipeline of each second testing chamber 8 of the multiple groups of permeation cells, so that only the output end pipeline of the second testing chamber 8 of the permeation cell to be tested is switched to the main pipeline where the flow sensing element 9 is located.
The working principle is as follows:
the flow sensing element 9 transmits the detected gas flow value in the pipeline to the control system, and the control system controls the driving motor 2 according to the actually required flow value to adjust the flow in the pipeline.
The pressure sensing element 10 transmits the detected value of the gas pressure in the pipeline to the control system. The control system can judge whether the gas pressure value in the pipeline is within the allowed safety value range, if the gas pressure value in the pipeline is not within the allowed safety value range, the control system can prompt an operator in a mode of alarming and the like, and meanwhile, the control over the driving motor 2 is stopped to prevent the motor from being locked.
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. An automatic flow control device for gas permeation testing, characterized by:
the method comprises the following steps: a regulating valve and an air resistance component;
the air inlet end of the regulating valve is communicated with the air outlet end of the first pipeline, the air inlet end of the first pipeline is used for being communicated with the air supply device, and the air outlet end of the regulating valve is communicated with the air inlet end of the second pipeline;
the gas outlet end of the second pipeline is communicated with the gas inlet ends of at least two branch pipelines, and the gas outlet end of each branch pipeline is used for being communicated with the gas inlet end of one gas permeation testing tank;
each branch pipeline is provided with an air resistance component, and the adjusting shaft of the adjusting valve is connected with the output end of the driving mechanism.
2. An automated flow control apparatus for gas permeation testing as recited in claim 1, wherein:
the driving mechanism is a driving motor, and the output end of the driving motor is connected with the regulating shaft of the regulating valve through a coupler;
alternatively, the first and second liquid crystal display panels may be,
the air outlet end of the pressure sensing element is communicated with the air inlet end of the regulating valve through a pipeline, and the air inlet end of the pressure sensing element is communicated with an air supply device;
alternatively, the first and second electrodes may be,
the air resistance component is a needle valve or a capillary pipeline;
alternatively, the first and second electrodes may be,
the types and structural parameters of the air resistance components are the same.
3. An automated flow control apparatus for gas permeation testing as recited in claim 1, wherein:
the gas permeation testing device further comprises a flow sensing element, and the gas inlet end of the flow sensing element is communicated with the gas outlet end of the gas permeation testing pool through a pipeline.
4. An automated flow control apparatus for gas permeation testing as claimed in claim 3, wherein:
a switching valve is also arranged on a pipeline between the gas inlet end of the flow sensing element and the gas outlet end of the gas permeation testing cell.
5. An automated flow control device for gas permeation testing, comprising:
the method comprises the following steps: a regulating valve and an air resistance component;
the air inlet end of the regulating valve is communicated with the air outlet end of the first pipeline, the air inlet end of the first pipeline is used for being communicated with the air supply device, and the air outlet end of the regulating valve is communicated with the air inlet end of the second pipeline;
the gas outlet end of the second pipeline is divided into at least two branch pipelines, and the gas outlet end of each branch pipeline is communicated with the gas inlet end of one gas permeation testing tank;
each branch pipeline is provided with an air resistance component, and an adjusting shaft of the adjusting valve is connected with the output end of the driving mechanism.
6. An automated flow control apparatus for gas permeation testing as recited in claim 5, wherein:
the driving mechanism is a driving motor, and the output end of the driving motor is connected with the regulating shaft of the regulating valve through a coupler;
alternatively, the first and second liquid crystal display panels may be,
the gas outlet end of the pressure sensing element is communicated with the gas inlet end of the regulating valve through a pipeline, and the gas inlet end of the pressure sensing element is communicated with a gas supply device;
alternatively, the first and second electrodes may be,
the air resistance component is a needle valve or a capillary pipeline;
alternatively, the first and second electrodes may be,
the types and structural parameters of the air resistance components are the same.
7. An automated flow control apparatus for gas permeation testing as recited in claim 5, wherein:
the gas permeation testing device further comprises a flow sensing element, and the gas inlet end of the flow sensing element is communicated with the gas outlet end of the gas permeation testing pool through a pipeline.
8. An automated flow control apparatus for gas permeation testing as recited in claim 7, wherein:
a switching valve is also arranged on a pipeline between the gas inlet end of the flow sensing element and the gas outlet end of the gas permeation testing cell.
9. A gas permeation tester is characterized in that:
the method comprises the following steps: at least one automated flow control device for gas permeation testing according to any one of claims 1 to 8 and at least two gas permeation testing cells.
10. The gas permeation tester of claim 9, wherein:
the gas permeation test cell 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, the opening of the first groove is opposite to the opening of the second groove, and a sample to be tested is placed between the opening of the first groove and the opening of the second groove;
the first test cavity is provided with a first air inlet pipeline and a first exhaust pipeline which are communicated with the first groove, and the second test cavity is provided with a second air inlet pipeline and a second exhaust pipeline which are communicated with the second groove.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123382351.8U CN216978746U (en) | 2021-12-29 | 2021-12-29 | Automatic flow control device for gas permeation test and gas permeation tester |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123382351.8U CN216978746U (en) | 2021-12-29 | 2021-12-29 | Automatic flow control device for gas permeation test and gas permeation tester |
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| CN216978746U true CN216978746U (en) | 2022-07-15 |
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| CN202123382351.8U Active CN216978746U (en) | 2021-12-29 | 2021-12-29 | Automatic flow control device for gas permeation test and gas permeation tester |
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