CN112284994A - Gas permeation testing system and method - Google Patents

Abstract

The present disclosure provides a gas permeation testing system and method, the system comprising: the device comprises a cover body, a test cavity mechanism, a first plate and a second plate, wherein the test cavity mechanism is connected with a sensing element through a pipeline, the cover body is movably connected with the second plate, and the cover body is connected with a movable end of a driving mechanism; the first plate is connected with the side wall of the second plate, the test cavity is arranged in a first space formed by the cover body, the first plate and the second plate, the second plate is provided with at least one first temperature control device, and the cover body is internally provided with a first air flow channel which is respectively communicated with the first temperature control device and the first space; the upper part and the lower part of the testing cavity mechanism can generate temperature control gas through the temperature control device, so that the temperature of a testing area is uniform; the compact structural design of the testing cavity mechanism provides a temperature control gas propagation channel, and the temperature stability of a testing area is further improved.

Description

Gas permeation testing system and method

Technical Field

The disclosure relates to the technical field of gas permeation testing, and in particular relates to a gas permeation testing system and a gas permeation testing method.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

At present, a traditional gas permeation detection system consists of a computer, a sensor, a temperature controller and a test chamber.

The inventor of the present disclosure finds that the temperature control mode of the traditional gas test system is that the temperature control cover is externally arranged, and the temperature control cover is buckled on the test cavity when the temperature of the test cavity needs to be controlled, and the structure has the disadvantages of poor integrity, complex temperature control process, large environmental influence caused by the fact that the sensor is arranged in the lower cavity, no heat preservation measure is arranged in the lower cavity, and easy data fluctuation; the membrane penetration detection needs to detect the permeability of the membrane in specific environments such as certain temperature, humidity, pressure, flow and the like, the accuracy and stability of the temperature, the humidity, the pressure and the flow have great influence on a test result, an effective airflow circulation channel cannot be formed in the current structural mode in which a plurality of test cavities are arranged, and a plurality of test cavities can generate large temperature difference and humidity difference, so that test data among the test cavities generate large errors.

Disclosure of Invention

In order to solve the defects of the prior art, the present disclosure provides a gas permeation testing system and method, wherein both the upper part and the lower part of a testing cavity mechanism can generate temperature control gas through a temperature control device, so that the temperature of a testing area is uniform; the compact structural design of the testing cavity mechanism provides a temperature control gas propagation channel, and the temperature stability of a testing area is further improved.

In order to achieve the purpose, the following technical scheme is adopted in the disclosure:

a first aspect of the present disclosure provides a gas permeation testing system.

A gas permeation testing system, comprising: the device comprises a cover body, a test cavity mechanism, a first plate and a second plate, wherein the test cavity mechanism is connected with a sensing element through a pipeline, the cover body is movably connected with the second plate, and the cover body is connected with a movable end of a driving mechanism;

the first plate is connected with the side wall of the second plate, the testing cavity is arranged in a first space formed by the cover body, the first plate and the second plate, at least one first temperature control device is arranged on the second plate, and a first air flow channel communicated with the first temperature control device and the first space is arranged in the cover body.

As some possible implementations, the first plate is a thermal insulation plate and the second plate is a thermal insulation plate.

As some possible implementation manners, at least one second temperature control device is arranged on the second plate, and a second airflow channel respectively communicated with the second temperature control device and the first space is arranged on the first plate.

As some possible implementation manners, the two sides of the testing cavity on the first plate are provided with the light emitter and the light receiver which are matched with each other, and the light emitter and the light receiver are both in communication connection with the control terminal.

As some possible implementations, the sensing element is communicatively coupled to a control terminal.

As some possible implementation manners, the testing device further comprises a supporting plate connected with the second plate, the supporting plate is connected with one side, away from the testing cavity, of the first plate, and the sensing element is arranged in a closed second space formed by the supporting plate, the first plate and the second plate.

As a further limitation, at least one third temperature control device is arranged on the second plate and is communicated with the second space.

As a further limitation, the second plate at least comprises a first sub-plate and a second sub-plate, the first sub-plate and the second sub-plate are both connected with the first plate, the test cavity is arranged in a first space formed by the first plate, the cover body and the first sub-plate, the supporting plate is connected with the first plate, and the sensing element is arranged in a closed second space formed by the supporting plate, the first plate and the second sub-plate.

As a further limitation, the second plate member at least comprises a first sub-plate member and a second sub-plate member, the first sub-plate member is connected with the second sub-plate member, the first plate member is connected with a side wall of the first sub-plate member or the second sub-plate member, the testing cavity is arranged in a first space formed by the first plate member, the cover body and the first sub-plate member, the supporting plate member is connected with the first plate member, and the sensing element is arranged in a closed second space formed by the supporting plate member, the first plate member and the second sub-plate member.

As some possible implementation manners, the testing cavity mechanism includes at least one set of testing units, each set of testing units includes two testing cavities symmetrically arranged, and a preset acute angle is formed between each testing cavity and the first plate.

As a further limitation, multiple sets of test units are arranged in parallel side by side in sequence.

As a further limitation, the test cavity comprises a first test cavity and a second test cavity, and a sample to be tested is placed between the first test cavity and the second test cavity;

the first test cavity is provided with at least one test gas pipeline interface, and the second test cavity is provided with at least one detection pipeline interface.

As a further limitation, the test chamber further comprises a pressing mechanism, and the movable end of the pressing mechanism is in contact with or fixed on the outer side wall of the first test chamber;

as a further limitation, the first testing chamber is movably connected with the fixing piece on the first plate.

As a further limitation, a preset acute angle is formed between each second testing cavity and the first plate, and each second testing cavity is fixedly connected with the first plate through the first connecting piece.

As a further limitation, the second test chamber is fixed to the first plate by a fixing member.

As a further limitation, at least one liquid circulation pipeline is arranged in the first testing cavity and/or the second testing cavity, and the first testing cavity and/or the second testing cavity are communicated with the constant-temperature liquid supply device through a liquid circulation pipeline interface.

As a further limitation, extension lines of one ends of the two second testing cavities far away from the first plate member in each group of testing units intersect.

As a further limitation, extension lines of one ends of the two second testing cavities facing the first plate member in each group of testing units intersect.

As a further limitation, a sample to be detected is clamped by a sample clamping device, the sample clamping device comprises a tray, a magnetic base plate and a ferromagnetic pressing plate, the tray is provided with through holes, a groove is arranged along the periphery of the through hole of the tray, and the magnetic base plate is fixedly arranged in the groove;

the ferromagnetic pressure plate is configured to clamp the sample between the ferromagnetic pressure plate and the magnetic pad, and the through holes of the tray, the magnetic pad, and the ferromagnetic pressure plate are coaxially configured.

As a further limitation, a sample to be detected is clamped by a sample clamping device, the sample clamping device comprises a tray, a magnetic base plate and a ferromagnetic pressing plate, the tray is provided with through holes, a groove is arranged along the periphery of the through hole of the tray, and the ferromagnetic pressing plate is fixedly arranged in the groove of the tray;

the magnetic pad is configured to clamp the sample between the magnetic pad and the ferromagnetic pressure plate, and the through holes of the tray, the magnetic pad, and the ferromagnetic pressure plate are coaxially configured.

As a further limitation, a preset acute angle is formed between the second testing cavity and the first plate, and the two second testing cavities in each group of testing units are fixedly connected through a second connecting piece.

A second aspect of the present disclosure provides a gas permeation test method.

A gas permeation testing method using the gas permeation testing system according to the first aspect of the present disclosure, comprising the steps of:

the driving mechanism drives the cover body to open, and the cover body is closed after the test sample is placed into the test cavity mechanism;

the first temperature control device and the second temperature control device respectively generate temperature control gas, and the temperature control gas flows at the upper part and the lower part of the test cavity through the first airflow pipeline and the second airflow pipeline;

the temperature control gas generated by the third temperature control device circularly flows in the second space;

and the test gas enters the test cavity mechanism and permeates through the test sample, and the permeation result is analyzed according to the data detected by the sensing element.

Compared with the prior art, the beneficial effect of this disclosure is:

1. according to the test system and the test method, the test cavity mechanism is arranged in a closed space, and temperature control gas can be generated at the upper part and the lower part of the test cavity mechanism through the temperature control device, so that the temperature of the test cavity is uniform; the compact structural design of the testing cavity mechanism provides a temperature control gas propagation channel, and the temperature stability of a testing area is further improved.

2. According to the test system and the test method, the cover body is hollow and is provided with the first air flow channel, and air flow can flow in the cover body, so that the system structure is more compact.

3. According to the testing system and the testing method, the sensing element is arranged in the second space and is located in a closed environment, the third temperature controller is arranged in the closed environment, the third temperature controller can control the temperature of the lower cavity, so that the sensing element is located in a stable temperature environment, the influence of the change of the ambient temperature on the testing precision of the sensing element is reduced, and the accuracy of the penetration test is improved.

4. According to the test system and the test method, the cover body is connected with the movable end of the driving mechanism, and the driving mechanism can control the opening and closing of the cover body, so that the automation level of the test system is improved.

5. According to the testing system and the testing method, the light emitter and the light receiver are arranged on the heat insulation plate, when the light of the light emitter is blocked, the light receiver cannot receive the light of the light emitter, the cover body cannot fall, and the cover body can be effectively prevented from pressing the human body when falling.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and are not to limit the disclosure.

Fig. 1 is a side view of a gas permeation testing system provided in example 1 of the present disclosure.

Fig. 2 is a rear view of a gas permeation testing system provided in example 1 of the present disclosure.

Fig. 3 is a schematic structural diagram of a test unit of a multi-chamber test structure for membrane permeation detection provided in embodiment 2 of the present disclosure.

Fig. 4 is a schematic view of a multi-chamber test structure for membrane permeation testing provided in embodiment 2 of the present disclosure.

Fig. 5 is a schematic structural diagram of a test unit of a multi-chamber test structure for membrane permeation detection provided in embodiment 3 of the present disclosure.

Fig. 6 is a schematic view of a multi-chamber test structure for membrane permeation testing provided in example 3 of the present disclosure.

Fig. 7 is a schematic structural diagram of a sample holding device according to embodiment 4 of the present invention.

Fig. 8 is an assembly view of a sample holding device according to embodiment 4 of the present invention.

Fig. 9 is a schematic structural diagram of a sample holding device according to embodiment 5 of the present invention.

Fig. 10 is an assembly view of a sample holding device according to embodiment 5 of the present invention.

1. An upper cover; 2. a hinge; 3. a first temperature controller; 4. a cylinder; 5. a cylinder frame; 6. a second temperature controller; 7. a thermal insulation plate; 8. a third temperature controller; 9. a rear insulation board; 10. a lower cavity; 11. footing; 12. a sensor; 13. a computer terminal; 14. a pipeline; 15. a test chamber mechanism; 16. a light receiver; 17. a light emitter; 18. pressing a plate; 19. a sample; 20. a magnetic backing plate; 21. a tray;

1500. a test chamber; 1501. a hold-down mechanism; 1502. testing the upper cavity; 1503. testing the sample; 1504. testing the lower cavity; 1505. testing the upper cavity circulating water joint; 1506. testing the circulating water joint of the lower cavity; 1507. testing an upper cavity gas circuit joint; 1508. testing the lower cavity gas circuit joint; 1509. a fixed seat; 1510. a cross member.

Detailed Description

The present disclosure is further described with reference to the following drawings and examples.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. 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 disclosure 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 example embodiments according to the present disclosure. 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.

In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only relational terms determined for convenience in describing structural relationships of the parts or elements of the present disclosure, and do not refer to any parts or elements of the present disclosure, and are not to be construed as limiting the present disclosure.

In the present disclosure, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and mean either a fixed connection or an integrally connected or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present disclosure can be determined on a case-by-case basis by persons skilled in the relevant art or technicians, and are not to be construed as limitations of the present disclosure.

The embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict.

Example 1:

as shown in fig. 1 and 2, the present disclosure embodiment 1 provides a gas permeation testing system, including: the testing device comprises an upper cover 1, a testing cavity mechanism 15, a heat insulation plate 7 (a first plate) and a rear heat insulation plate 9 (a second plate), wherein the testing cavity mechanism 15 is connected with a sensor 12 through a pipeline 14, the upper cover 1 is movably connected with the rear heat insulation plate 9, and the upper cover 1 is connected with a movable end of a driving mechanism;

the side wall of heat insulation board 7 and back heated board 9 is connected, and the test cavity sets up in the airtight first space of upper cover 1, heat insulation board 7 and back heated board 9 formation, is equipped with at least one first temperature control device 3 on the back heated board 9, is equipped with the first air current channel respectively with first temperature control device 3 and first space intercommunication in the upper cover 1.

It can be understood that, in some other embodiments, the first plate may also be a heat-insulating plate, the second plate may also be a heat-insulating plate, or of course, other plates that do not insulate heat may also be used, and the first plate and the second plate may be heat-insulating plates at the same time, or may also be heat-insulating plates at the same time, and those skilled in the art may select the plate according to specific conditions, and details are not described here.

In this embodiment, first plate and second plate all are the multiply wood, and the inner wall one deck is the heat preservation material, and the outer wall is ordinary material, can understand, and in some other embodiments, first plate and second plate also can be single-layer board, and the multiply wood can be that each board is close laminating forms, also can be and leave the space between each layer board, and then realize better heat preservation effect, and technical personnel in the art can select according to specific operating mode, and here is no longer repeated.

In this embodiment, the second plate is an integral plate for forming the first space and the second space, respectively.

It can be understood that, in some other embodiments, the second plate may also include a first sub-plate and a second sub-plate, both the first sub-plate and the second sub-plate are connected to the first plate, the test cavity is disposed in a first space formed by the first plate, the cover and the first sub-plate, the supporting plate is connected to the first plate, and the sensing element is disposed in a second enclosed space formed by the supporting plate, the first plate and the second sub-plate, of course, the second plate may also be formed by combining more sub-plates as long as the first space and the second space can be formed, and those skilled in the art may select the first sub-plate and the second sub-plate according to specific conditions, which will not be described herein again.

It is understood that in other embodiments, the second board member includes a first sub-board member and a second sub-board member, the first sub-board member is connected with the second sub-board member, the first board member is connected with a side wall of the first sub-board member or the second sub-board member, the test chamber is disposed in a first space formed by the first board member, the cover body and the first sub-board member, the supporting board member is connected with the first board member, and the sensing element is disposed in a second space formed by the supporting board member, the first board member and the second sub-board member; of course, the second plate may also be formed by combining more sub-plates, as long as the first space and the second space can be formed, and a person skilled in the art may select the sub-plates according to a specific working condition, which is not described herein again.

In this embodiment, the first air flow channel may be a cavity in the upper cover 1, and it is understood that in other embodiments, the first air flow channel may also be a plurality of channel branches, and each channel branch is communicated with the first temperature control device 3 and the first space.

In this embodiment, the thermal insulation plate 7 is vertically and fixedly connected with the side wall of the rear thermal insulation plate 9, and the thermal insulation plate 7 is embedded into the side wall of the rear thermal insulation plate 9.

It can be understood that, in some other embodiments, the side walls of the heat insulating plate 7 and the rear heat insulating plate 9 form any angle, and the included angle may be 10 ° or 20 ° or 30 °, and the like, and those skilled in the art may design according to specific working conditions, and details are not described here.

It is understood that in some other embodiments, the heat insulation plate 7 is fixedly connected to the inner side surface of the rear heat insulation plate 9, and the fixed connection manner may be an adhesive connection, or a joggle connection, or a snap connection, or another fixed connection manner, as long as the fixing of the heat insulation plate and the rear heat insulation plate 9 is achieved; of course, the insulation board also can be the integrated into one piece preparation with back heated board, also can be the insulation board pegs graft and pass the back heated board after fixed the lateral wall at back heated board through the mounting, technical personnel in the field can design according to specific operating mode, no longer describe here.

In this embodiment, back heated board 9 is fixed with cylinder frame 5, and the cylinder frame is fixed with cylinder 4, drives upper cover 1 and opens when cylinder 4 contracts, drives upper cover 1 and closes when cylinder 4 stretches out.

It can be understood that, in some other embodiments, the cylinder may also be replaced with a rotary clamping cylinder, a lifting motor, and a lifting rotation device, as long as the cover can be driven to rotate, and those skilled in the art can select and design according to specific working conditions, which is not described herein again.

The insulation board is provided with at least one second temperature control device, and the insulation board is provided with a second airflow channel which is respectively communicated with the second temperature control device and the first space. The first temperature control device and the second temperature control device can generate temperature control gas, and temperature control gas flows at the upper part and the lower part of the testing cavity mechanism 15, wherein the temperature control gas generated by the first temperature control device 3 flows in the upper cover 1.

In the embodiment, the two sides of the test cavity on the heat insulation plate are provided with the light emitter 17 and the light receiver 16 which are matched with each other, the light emitter and the light receiver are both in communication connection with the computer terminal 13, light irradiated by the light emitter 17 is received by the light receiver 16, and when an object is blocked between the light emitter and the light receiver, the upper cover cannot be closed, so that the upper cover can be effectively prevented from pressing a human body when falling; the sensing element is also in communication connection with a computer terminal, and the computer terminal analyzes the penetration structure according to data detected by the sensing element.

In this embodiment, the computer terminal 13 is a computer with a touch display screen, and the touch display screen is disposed on the outer side of the supporting plate, it can be understood that in some other embodiments, the computer terminal 13 may also be a common computer with a display screen controlled by a keyboard and a mouse, and those skilled in the art may select the computer according to specific working conditions, and details are not described here.

The testing device is characterized by further comprising a supporting plate connected with the heat insulation plate, the supporting plate is connected with one side, away from the testing cavity, of the heat insulation plate, the sensing element is arranged in a closed second space formed by the supporting plate, the heat insulation plate and the heat insulation plate, and the cavity where the second space is located is a lower cavity 10.

At least one third temperature control device 8 is arranged on the heat insulation board, the third temperature control device is communicated with a second space in the lower cavity, and temperature control gas generated by the third temperature control device 8 circulates in the second space in the lower cavity 10.

In this embodiment, the test chamber mechanism is a conventional test chamber, and is not described herein again.

In this embodiment, the first temperature controller, the second temperature controller and the third temperature controller are all semiconductor electronic temperature controllers, and two electronic temperature controllers are adopted, and two electronic temperature controllers work simultaneously or one electronic temperature controller works; the temperature control system comprises a computer terminal, a first temperature sensor, a second temperature sensor, a first temperature controller, a second temperature controller, a third temperature controller, a first temperature sensor and a second temperature sensor, wherein the first temperature sensor is arranged in a first space, the second temperature sensor is arranged in a second space, the first temperature controller, the second temperature controller, the third temperature controller, the first temperature sensor and the second temperature sensor are all in communication connection with the computer terminal, the computer terminal controls the first temperature controller and the second temperature controller to work according to a temperature value detected by the first temperature sensor, and the computer terminal controls the third temperature controller to work according.

It can be understood that, in some other embodiments, the first temperature controller, the second temperature controller, and the third temperature controller may be one or more, and those skilled in the art may select the temperature controller according to specific conditions, which is not described herein again.

It is understood that, in some other embodiments, the first temperature sensor and the second temperature sensor may be two or more, and when there are more than two first temperature sensors or second temperature sensors, the average value of the first temperature sensors is used as the temperature of the space where the temperature sensor is located, and the average value of the second temperature sensors is used as the temperature of the space where the temperature sensor is located.

Example 2:

the embodiment 2 of the present disclosure provides a gas permeation testing system, the other structures of which are the same as those provided in embodiment 1, in this embodiment, the testing chamber mechanism 15 is a multi-chamber testing structure for membrane permeation detection, as shown in fig. 3, the multi-chamber testing structure includes one or more testing units, such as two, three or more testing units.

Each test unit comprises two test cavities 1500, the two test cavities 1500 are symmetrically arranged and connected by a cross beam 201 (a second connecting piece), the two groups of test cavities 1500 are arranged in an opposite acute angle, and each test cavity 1500 comprises a test lower cavity 1504, a test upper cavity 1502, a pressing mechanism 1501 and a fixed seat 1509.

It is understood that in other embodiments, each test chamber 1500 is fixedly connected with the thermal insulation plate through the longitudinal beam (the first connecting member), and the test chambers may not be connected through the cross beam; of course, both the cross beams and the longitudinal beams can be present to further improve the fixing effect of the test chamber.

In this embodiment, the cross beam is parallel to the heat insulating plate, and the longitudinal beam is perpendicular to the heat insulating plate.

It is understood that in other embodiments, the cross beam, the longitudinal beam and the thermal insulation plate may have a preset included angle, as long as the fixing of the test chamber can be achieved, and the included angle may be 20 ° or 30 ° or 45 ° or any other angle; meanwhile, the cross beam and the longitudinal beam can be not horizontal or vertical, and can be bent to some extent or be special-shaped rod pieces, the structure of the cross beam and the longitudinal beam is not limited specifically, as long as the test chamber can be fixed, and the cross beam and the longitudinal beam can be selected by a person skilled in the art according to specific working conditions, and are not described in detail herein.

In this embodiment, the fixing base 1509 is fixed on the thermal insulation plate, and the outer sidewall of the testing lower cavity 1504 is fixedly connected with the fixing base 1509.

In this embodiment, the fixed connection mode may be bonding, i.e. fix with sticky materials such as glue, and it can be understood that, in some other embodiments, the fixed connection mode may also be joggle, or buckle connection, or other fixed modes, and of course, here, the fixing base may also be set up as with insulation board integrated into one piece or with test lower cavity 1504 integrated into one piece, as long as can realize fixing of fixing base and insulation board and test lower cavity 1504, and the skilled person in the art can select according to specific working conditions, and it is no longer described here.

In this embodiment, the thermal insulation plate is specifically an upper surface of a horizontal plate in a test box for accommodating a test structure, and it can be understood that in some other embodiments, the thermal insulation plate may be a horizontal table top or a horizontal bottom surface, and a person skilled in the art may select the thermal insulation plate according to a specific working condition, which is not described herein again.

One or more test upper cavity gas circuit joints 1507 are arranged on the test upper cavity 1502, one or more test lower cavity gas circuit joints 1508 are arranged on the test lower cavity 1504, one or more test upper cavity circulating water joints 1505 are arranged on the test upper cavity 1502, and one or more test upper cavity circulating water joints 1506 are arranged on the test lower cavity 1504.

In this embodiment, after the lower testing cavity 1504 in each testing cavity is mounted on the fixing base 1509, extension lines of ends, far away from the thermal insulation plate, of the two second testing cavities in each group of testing units intersect, and an included angle α between the lower testing cavity 1504 and the thermal insulation plate is an acute angle.

In this embodiment, the included angle α is preferably 45 °, and it can be understood that in other embodiments, the included angle may also be any acute angle, such as other acute angles of 20 °, 30 °, 60 °, or 80 °, which enables the setting of the test chamber to be more compact and facilitates lofting operation, and those skilled in the art may select the included angle α according to specific working conditions, and details are not described here.

It can be understood that, in some other embodiments, the included angle α between the testing lower cavity 1504 and the thermal insulation plate is a right angle, that is, the testing lower cavity 1504 is perpendicular to the thermal insulation plate, which can be selected by a person skilled in the art according to a specific working condition and is not described herein again.

The upper test chamber 1502 is mounted on a hold down mechanism 1501, and the hold down mechanism 1501 holds the upper test chamber 1502 and the test specimen 1503 down onto the lower test chamber 1504 during testing.

The hold-down mechanism 1501 is provided with driving components such as an air cylinder mechanism, an electric cylinder mechanism, an electromagnetic driving mechanism or a hydraulic driving mechanism, so that the test sample can be automatically held down, and the skilled person can select the test sample according to specific working conditions, which is not described herein again.

In this embodiment, the pressing mechanism includes a fixing member, a pressing plate, and a handle, the fixing member is fixedly connected to the heat insulation plate, and the pressing plate is hinged to the fixing member;

one side of pressure strip and the contact of the lateral wall of test upper chamber 1502, the opposite side of pressure strip is connected with cylinder mechanism, electric cylinder mechanism, electromagnetic drive mechanism or hydraulic drive mechanism's drive end, and the handle passes through the connecting plate and is articulated with the pressure strip, can realize the rotation of pressure mechanism 1501 through the handle.

In this embodiment, the active area of the hold-down mechanism is the outside of each test unit.

In this embodiment, the connecting plate can cover the junction of first test chamber and second test chamber to further improvement compresses tightly the effect.

In this embodiment, at least one liquid circulation pipeline is arranged in the first test cavity and/or the second test cavity, and the first test cavity and/or the second test cavity are communicated with the constant-temperature liquid supply device through a liquid circulation pipeline interface.

In this embodiment, liquid can adopt water, and thermostatic liquid feeding device can adopt the thermostatic water tank, certainly, in some other embodiments, liquid also can adopt other better liquid of accuse temperature effect, and the skilled person in the art can select according to specific operating mode, and no longer repeated here.

In this embodiment, the liquid circulation pipeline is disposed in the outer wall interlayer of the first test cavity and/or the second test cavity, that is, the temperature in the test cavity is controlled by implementing constant temperature control on the outer wall interlayer of the test cavity.

It can be understood that, in some other embodiments, the liquid circulation pipeline is disposed on the inner surface of the first test cavity and/or the second test cavity, that is, the temperature control in the test cavity is realized by performing direct heat conduction on air in the cavity, and a person skilled in the art may select the liquid circulation pipeline according to specific working conditions, which is not described herein again.

When the membrane permeation test is performed, the test gas enters the test upper cavity 1502 through the test upper cavity gas path joint 1507 arranged on the test upper cavity 1502, the test gas enters the test lower cavity 1504 after penetrating through the test sample 1503, and the test lower cavity gas path joint 1508 is connected to the sensor to analyze the penetrated gas, so that the whole test process is completed.

As shown in fig. 4, in the present embodiment, a plurality of test units are sequentially arranged in parallel to form a multi-cavity test structure, so that the compactness of the test structure is greatly improved, and better tests of more samples can be achieved in a limited space.

Example 3:

the embodiment 3 of the present disclosure provides a gas permeation test system, and other structures of the gas permeation test system are the same as those in the embodiment 1, and only the test chamber mechanism is changed.

The test chamber mechanism is a multi-chamber test structure for membrane permeation detection, as shown in fig. 5, and the multi-chamber test structure includes one or more test units, such as two, three, or more test units.

Each test unit comprises two test cavities 100, the two test cavities 100 are symmetrically arranged, the two groups of test cavities 100 are arranged in a back acute angle, and each test cavity 100 comprises a lower test cavity 104, an upper test cavity 102, a pressing mechanism 101 and a fixed seat 109.

It will be appreciated that in other embodiments, each test chamber 100 is fixedly attached to the thermal barrier by stringers.

In this embodiment, the longitudinal beam is perpendicular to the thermal insulation plate.

It is understood that in other embodiments, the longitudinal beam and the thermal insulation plate may have a preset included angle, as long as the fixing of the test chamber can be achieved, and the included angle may be 20 ° or 30 ° or 45 ° or any other angle; meanwhile, the longitudinal beam may not be horizontal or vertical, and may have a certain bending or be a special-shaped rod, where the structure is not specifically limited, as long as the fixing of the test chamber can be realized, and a person skilled in the art may select the rod according to a specific working condition, which is not described herein again.

In this embodiment, the fixing seat 109 is fixed on the thermal insulation plate, and the outer sidewall of the testing lower cavity 104 is fixedly connected to the fixing seat 109.

In this embodiment, the fixed connection mode may be bonding, i.e., fixing with adhesive materials such as glue, and it may be understood that, in some other embodiments, the fixed connection mode may also be joggling, or fastening, or other fixed modes, and of course, here, the fixing base may also be set to be integrally formed with the thermal insulation plate or integrally formed with the test lower cavity 104, as long as the fixing of the fixing base with the thermal insulation plate and the test lower cavity 104 can be achieved, and a person skilled in the art may select according to a specific working condition, and details are not described here.

In this embodiment, the thermal insulation plate is specifically an upper surface of a horizontal plate in a test box for accommodating a test structure, and it can be understood that in some other embodiments, the thermal insulation plate may be a horizontal table top or a horizontal bottom surface, and a person skilled in the art may select the thermal insulation plate according to a specific working condition, which is not described herein again.

One or more test upper chamber gas path connectors 107 are disposed on the test upper chamber 102, and one or more test lower chamber gas path connectors 108 are disposed on the test lower chamber 104.

In this embodiment, after the testing lower chamber 104 in the testing chamber is mounted on the fixing base 109, extension lines of one ends of the two second testing chambers in each group of testing units, which face the thermal insulation plate, intersect, and an included angle α between the testing lower chamber 104 and the thermal insulation plate is an acute angle.

In this embodiment, the included angle α is preferably 45 °, and it can be understood that in other embodiments, the included angle may also be any acute angle, such as other acute angles of 20 °, 30 °, 60 °, or 80 °, which enables the setting of the test chamber to be more compact and facilitates lofting operation, and those skilled in the art may select the included angle α according to specific working conditions, and details are not described here.

It can be understood that, in some other embodiments, the included angle α between the test lower chamber 104 and the thermal insulation plate is a right angle, that is, the test lower chamber 104 is perpendicular to the thermal insulation plate, which can be selected by a person skilled in the art according to a specific working condition and is not described herein again.

The upper test chamber 102 is mounted on a hold-down mechanism 101, and during testing, the hold-down mechanism 101 holds the upper test chamber 102 and the test specimen 103 down against the lower test chamber 104.

The hold-down mechanism 101 is provided with a cylinder mechanism, an electric cylinder mechanism, an electromagnetic driving mechanism or a hydraulic driving mechanism and other driving components, so that the test sample can be automatically held down, and the technicians in the field can select the test sample according to specific working conditions, which is not described herein again.

In this embodiment, the pressing mechanism includes a fixing member, a pressing plate, and a handle, the fixing member is fixedly connected to the heat insulation plate, and the pressing plate is hinged to the fixing member;

one side of the pressing plate is in contact with the outer side wall of the upper testing cavity 102, the other side of the pressing plate is connected with the driving end of the air cylinder mechanism, the electric cylinder mechanism, the electromagnetic driving mechanism or the hydraulic driving mechanism, the handle is hinged with the pressing plate through the connecting plate, and the rotation of the pressing mechanism 101 can be achieved through the handle.

In this embodiment, the active area of the hold-down mechanism is the inside of each test unit.

In this embodiment, the connecting plate can cover the junction of first test chamber and second test chamber to further improvement compresses tightly the effect.

In this embodiment, at least one liquid circulation pipeline is arranged in the first test cavity and/or the second test cavity, and the first test cavity and/or the second test cavity are communicated with the constant-temperature liquid supply device through a liquid circulation pipeline interface.

In this embodiment, liquid can adopt water, and thermostatic liquid feeding device can adopt the thermostatic water tank, certainly, in some other embodiments, liquid also can adopt other better liquid of accuse temperature effect, and the skilled person in the art can select according to specific operating mode, and no longer repeated here.

In this embodiment, the liquid circulation pipeline is disposed in the outer wall interlayer of the first test cavity and/or the second test cavity, that is, the temperature in the test cavity is controlled by implementing constant temperature control on the outer wall interlayer of the test cavity.

It can be understood that, in some other embodiments, the liquid circulation pipeline is disposed on the inner surface of the first test cavity and/or the second test cavity, that is, the temperature control in the test cavity is realized by performing direct heat conduction on air in the cavity, and a person skilled in the art may select the liquid circulation pipeline according to specific working conditions, which is not described herein again.

When the membrane permeation test is performed, the test gas enters the test upper chamber 102 through the test upper chamber gas path joint 107 arranged on the test upper chamber 102, the test gas enters the test lower chamber 104 after penetrating through the test sample 103, and the test lower chamber gas path joint 108 is connected to the sensor to analyze the penetrated gas, so that the whole test process is completed.

As shown in fig. 6, in the present embodiment, a plurality of test units are sequentially arranged in parallel to form a multi-cavity test structure, so that the compactness of the test structure is greatly improved, and better tests of more samples can be realized in a limited space.

Example 4:

the embodiment 4 of the present disclosure provides a gas permeation test system, other structures of the gas permeation test system are the same as those in the embodiments 1, 2 or 3, and only the sample holding device in the test cavity is limited;

as shown in fig. 7 and 8, the sample holding means includes a press plate 18 with a through hole, a magnetic pad 20 with a through hole, and a tray 21 with a through hole;

in this embodiment, a groove corresponding to the magnetic pad 20 is formed on the upper side of the tray 21 along the periphery of the through hole, and the bottom of the magnetic pad 20 is glued and adhered to the groove on the tray 21.

The pressure plate 18 has ferromagnetic properties, the magnetic pad 20 has magnetism, the sample 19 is placed on the magnetic pad 20, the pressure plate 18 is placed on the sample 19, and the pressure plate 18 tightly presses the sample 19 on the magnetic pad 20 through magnetic attraction.

In this embodiment, the through holes of the pressure plate 18, the magnetic base plate 20 and the tray 21 are coaxially arranged, and the aperture of each through hole is the same, and at this time, the through holes of the pressure plate 18, the magnetic base plate 20 and the tray 21 are all over against the sample 19.

It is understood that in other embodiments, the through holes of the pressure plate 18, the magnetic base plate 20 and the tray 21 may only partially face the sample 19, as long as it is ensured that the gas can pass through the sample, and those skilled in the art can select the through holes according to specific conditions, and the detailed description is omitted here.

In this embodiment, the groove on the tray 21 is a groove that is communicated end to end along the edge of the through hole, and it can be understood that, in some other embodiments, the groove may also be a groove that is not communicated end to end along the edge of the through hole, such as 1/2 or 3/4 or 5/8 that occupies the edge of the through hole, as long as it can realize effective clamping of the sample, and those skilled in the art can select according to specific working conditions, and it is not described here any more.

It can be understood that, in other embodiments, the groove may also be a plurality of slots intermittently arranged along the periphery of the through hole, and the magnetic base plate is fixed by the protrusions at the bottom of the magnetic base plate, which are respectively matched with the slots.

In this embodiment, the tray is circular; the through holes and the grooves are also circular, the magnetic base plates are circular base plates matched with the grooves in the tray, and the circular base plates are directly embedded into the grooves and fixed through glue.

It will be appreciated that in other embodiments, the tray may be other shapes, such as square, rectangular, etc., and the platen may be other shapes, such as square, rectangular, trapezoidal, etc.; through-hole and recess also can be other shapes, as long as guarantee magnetic backing plate and recess phase-match and the clamp plate can with the magnetic backing plate cooperation with the sample clamp tightly can, skilled person in the art can go on according to specific operating mode, no longer gives unnecessary details here.

It can be understood that in some other embodiments, the groove is a clamping groove completely matched with the magnetic base plate, and the groove and the magnetic base plate are tightly clamped to realize fixation, and at this time, the groove and the magnetic base plate are not required to be fixed by glue.

It will be appreciated that in other embodiments, the tray 21 may have ferromagnetic properties, and the magnetic pads 20 are magnetically attracted directly into the grooves on the tray 21.

Example 5:

as shown in fig. 9 and 10, example 5 of the present disclosure provides a gas permeation testing system having the same other structure as in examples 1, 2, or 3, except that the sample holding means is defined within the test chamber.

The sample between the upper test cavity and the lower test cavity is clamped by a sample clamping device and comprises a pressing plate 18 with a through hole, a magnetic base plate 20 with a through hole and a tray 21 with a through hole;

a groove corresponding to the pressing plate 18 is formed in the periphery of the through hole in the upper side of the tray 21, glue is arranged at the bottom of the pressing plate 18 and is adhered to the groove in the tray 21, and the magnetic base plate 20 is magnetic; the sample 19 is placed on the upper surface of the pressing plate 18, and the magnetic pad 20 is placed on the upper surface of the sample 19, and the magnetic pad 20 presses the sample 19 tightly against the pressing plate 18 by magnetic attraction.

In this embodiment, the through holes of the pressure plate 18, the magnetic base plate 20 and the tray 21 are coaxially arranged, and the aperture of each through hole is the same, and at this time, the through holes of the pressure plate 18, the magnetic base plate 20 and the tray 21 are all over against the sample 19.

It is understood that in other embodiments, the through holes of the pressure plate 18, the magnetic base plate 20 and the tray 21 may only partially face the sample 19, as long as it is ensured that the gas can pass through the sample, and those skilled in the art can select the through holes according to specific conditions, and the detailed description is omitted here.

In this embodiment, the groove on the tray 21 is a groove that is communicated end to end along the edge of the through hole, and it can be understood that, in some other embodiments, the groove may also be a groove that is not communicated end to end along the edge of the through hole, such as 1/2 or 3/4 or 5/8 that occupies the edge of the through hole, as long as it can realize effective clamping of the sample, and those skilled in the art can select according to specific working conditions, and it is not described here any more.

It can be understood that, in other embodiments, the groove may also be a plurality of slots intermittently arranged along the periphery of the through hole, and the fixing of the pressure plate is realized by the protrusions at the bottom of the pressure plate, which are respectively matched with the slots.

In this embodiment, the tray is circular, through-hole and recess also are circular, just the clamp plate is the ring form clamp plate that matches with the recess on the tray, and ring form clamp plate is direct to be embedded into the recess, and is fixed through glue.

It will be appreciated that in other embodiments, the tray may be other shapes, such as square, rectangular, etc., and the platen may be other shapes, such as square, rectangular, trapezoidal, etc.; through-hole and recess also can be other shapes, as long as guarantee clamp plate and recess phase-match and the clamp plate can with the magnetic backing plate cooperation with the sample clamp tightly can with the recess phase-match, the skilled person in the art can go on according to specific operating mode, and it is no longer repeated here.

It can be understood that, in some other embodiments, the groove is a clamping groove completely matched with the pressing plate, and the groove is tightly clamped with the pressing plate to realize fixation, and at this time, the groove is not fixed by glue.

It will be appreciated that in other embodiments, the tray 21 may be magnetic, and the platen 18 may be magnetically attracted directly into a recess in the tray 21.

Example 6:

the embodiment 6 of the present disclosure provides a gas permeation test method, which uses the gas permeation test system described in the embodiment 1 or 2 or 3 or 4 or 5 of the present disclosure, and includes the following steps:

the driving mechanism drives the cover body to open, and the cover body is closed after the test sample is placed into the test cavity mechanism;

the first temperature control device and the second temperature control device respectively generate temperature control gas, and the temperature control gas flows at the upper part and the lower part of the test cavity through the first airflow pipeline and the second airflow pipeline;

the temperature control gas generated by the third temperature control device circularly flows in the second space;

and the test gas enters the test cavity mechanism and permeates through the test sample, and the permeation result is analyzed according to the data detected by the sensing element.

The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.

Claims (10)

1. A gas permeation testing system, comprising: the device comprises a cover body, a test cavity mechanism, a first plate and a second plate, wherein the test cavity mechanism is connected with a sensing element through a pipeline, the cover body is movably connected with the second plate, and the cover body is connected with a movable end of a driving mechanism;

the first plate is connected with the side wall of the second plate, the testing cavity is arranged in a first space formed by the cover body, the first plate and the second plate, at least one first temperature control device is arranged on the second plate, and a first air flow channel communicated with the first temperature control device and the first space is arranged in the cover body.

2. The gas permeation testing system of claim 1, wherein the first plate is a thermal insulation plate and the second plate is a thermal insulation plate;

alternatively, the first and second electrodes may be,

the second plate is provided with at least one second temperature control device, and the first plate is provided with a second airflow channel which is respectively communicated with the second temperature control device and the first space;

alternatively, the first and second electrodes may be,

a light emitter and a light receiver which are matched with each other are arranged on two sides of the testing cavity on the first plate, and the light emitter and the light receiver are in communication connection with the control terminal;

alternatively, the first and second electrodes may be,

the sensing element is in communication connection with the control terminal.

3. The gas permeation testing system of claim 1, further comprising a support plate coupled to the second plate, the support plate being coupled to the first plate, the sensing element being disposed within the enclosed second space formed by the support plate, the first plate, and the second plate.

4. The gas permeation testing system according to claim 3, wherein at least one third temperature control device is provided on the second plate member, and the third temperature control device is in communication with the second space;

alternatively, the first and second electrodes may be,

the second plate at least comprises a first sub-plate and a second sub-plate, the first sub-plate and the second sub-plate are both connected with the first plate, the test cavity is arranged in a first space formed by the first plate, the cover body and the first sub-plate, the supporting plate is connected with the first plate, and the sensing element is arranged in a closed second space formed by the supporting plate, the first plate and the second sub-plate;

alternatively, the first and second electrodes may be,

the second plate at least comprises a first sub-plate and a second sub-plate, the first sub-plate is connected with the second sub-plate, the first plate is connected with the side wall of the first sub-plate or the side wall of the second sub-plate, the testing cavity is arranged in a first space formed by the first plate, the cover body and the first sub-plate, the supporting plate is connected with the first plate, and the sensing element is arranged in a closed second space formed by the supporting plate, the first plate and the second sub-plate.

5. The gas permeation testing system of claim 1, wherein the testing chamber mechanism comprises at least one set of testing units, each set of testing units comprising two testing chambers symmetrically disposed, each testing chamber being at a predetermined acute angle with respect to the first plate.

6. The gas permeation testing system according to claim 5, wherein a plurality of sets of test units are arranged in parallel side-by-side in sequence.

7. The gas permeation test system according to claim 5, wherein the test chamber comprises a first test chamber and a second test chamber, and a sample to be tested is placed between the first test chamber and the second test chamber;

the first test cavity is provided with at least one test gas pipeline interface, and the second test cavity is provided with at least one detection pipeline interface.

8. The gas permeation testing system of claim 7, wherein the testing chamber further comprises a hold-down mechanism, a movable end of the hold-down mechanism contacting or being fixed to an outer sidewall of the first testing chamber;

alternatively, the first and second electrodes may be,

the first test cavity is movably connected with the fixing piece on the first plate;

alternatively, the first and second electrodes may be,

a preset acute angle is formed between each second testing cavity and the first plate, and each second testing cavity is fixedly connected with the first plate through a first connecting piece;

alternatively, the first and second electrodes may be,

the second testing cavity is fixed on the first plate through a fixing piece;

alternatively, the first and second electrodes may be,

at least one liquid circulation pipeline is arranged in the first testing cavity and/or the second testing cavity, and the first testing cavity and/or the second testing cavity are/is communicated with the constant-temperature liquid supply device through a liquid circulation pipeline interface;

alternatively, the first and second electrodes may be,

extension lines of one ends, far away from the first plate, of the two second testing cavities in each group of testing units are intersected;

alternatively, the first and second electrodes may be,

extension lines of one ends, facing the first plate, of the two second testing cavities in each group of testing units are intersected;

alternatively, the first and second electrodes may be,

a sample to be tested is clamped by a sample clamping device, the sample clamping device comprises a tray, a magnetic base plate and a ferromagnetic pressing plate, the tray is provided with through holes, a groove is arranged along the periphery of the through hole of the tray, and the magnetic base plate is fixedly arranged in the groove;

the ferromagnetic pressing plate is configured to clamp the sample between the ferromagnetic pressing plate and the magnetic base plate, and the through holes of the tray, the magnetic base plate and the ferromagnetic pressing plate are coaxially configured;

alternatively, the first and second electrodes may be,

a sample to be tested is clamped by a sample clamping device, the sample clamping device comprises a tray, a magnetic base plate and a ferromagnetic pressing plate, the tray is provided with through holes, a groove is formed along the periphery of the through hole of the tray, and the ferromagnetic pressing plate is fixedly arranged in the groove of the tray;

the magnetic pad is configured to clamp the sample between the magnetic pad and the ferromagnetic pressure plate, and the through holes of the tray, the magnetic pad, and the ferromagnetic pressure plate are coaxially configured.

9. The gas permeation testing system according to claim 5, wherein the second testing chambers are at a predetermined acute angle with the first plate, and two second testing chambers in each set of testing units are fixedly connected to each other by a second connecting member.

10. A gas permeation test method using the gas permeation test system according to any one of claims 1 to 9, comprising the steps of:

the driving mechanism drives the cover body to open, and the cover body is closed after the test sample is placed into the test cavity mechanism;

the first temperature control device and the second temperature control device respectively generate temperature control gas, and the temperature control gas flows at the upper part and the lower part of the test cavity through the first airflow pipeline and the second airflow pipeline;

the temperature control gas generated by the third temperature control device circularly flows in the second space;

and the test gas enters the test cavity mechanism and permeates through the test sample, and the permeation result is analyzed according to the data detected by the sensing element.

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