CN212321022U - Simple axial inflation sealing performance testing device - Google Patents
Simple axial inflation sealing performance testing device Download PDFInfo
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- CN212321022U CN212321022U CN202021535891.8U CN202021535891U CN212321022U CN 212321022 U CN212321022 U CN 212321022U CN 202021535891 U CN202021535891 U CN 202021535891U CN 212321022 U CN212321022 U CN 212321022U
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Abstract
The utility model discloses a simple axial inflation sealing performance testing device, which comprises a main shell and a rotating body; an accommodating chamber is arranged in the main shell, and at least one test channel communicated with the accommodating chamber is arranged on the main shell; the rotating body is arranged in the accommodating cavity and can rotate relative to the main shell; an axial air inlet/exhaust channel and at least one air channel are arranged in the rotating body; one end of the air inlet/outlet channel is provided with an air inlet/outlet, and the other end of the air inlet/outlet channel is closed; one end of the air channel is provided with a first connecting port communicated with the air inlet/outlet channel, and the other end of the air channel is provided with a second connecting port communicated with the accommodating cavity; the device also comprises a sealing structure; the utility model discloses a testing arrangement is used for carrying out the gas tightness test to non-seal article or sealed article, has simple structure, processing and convenient assembling and the good characteristics of measuring accuracy.
Description
Technical Field
The utility model relates to an air tightness test structure, concretely relates to simple and direct formula axial inflation leakproofness testing arrangement, method and processing method.
Background
Due to the miniaturization of electronic components, such as crystal oscillators and chips, the volume of products is smaller and smaller, and the sensitivity and precision of the test are improved by a smaller test internal volume, so that an ideal test effect is achieved. In the prior art, the chinese patent with application number 201910334704.5 discloses a differential pressure type air tightness tester and a test method, wherein the differential pressure type air tightness tester comprises an air source interface, an air charging/sucking valve, an air discharging valve, a first pressure retaining valve, a second pressure retaining valve, a differential pressure sensor, a first pressure dividing valve, a second pressure dividing valve, a tested object interface, a reference object interface, a first pressure dividing tank and a second pressure dividing tank; the air source interface is connected with the air charging/sucking valve, and the air outlet end of the air charging/sucking valve is respectively connected with the first pressure retaining valve, the second pressure retaining valve and the air release valve; the first pressure retaining valve is connected with an interface of a measured object; the second pressure retaining valve is connected with the reference object interface; one end of the differential pressure sensor is connected between the first pressure retaining valve and the interface of the measured object, and the other end of the differential pressure sensor is connected between the second pressure retaining valve and the interface of the reference object; one end of the first pressure dividing valve is connected between the first pressure maintaining valve and the interface of the measured object, and the other end of the first pressure dividing valve is connected with the first pressure dividing tank; one end of the second partial pressure valve is connected between the second pressure retaining valve and the reference object interface, and the other end of the second partial pressure valve is connected with the second partial pressure tank. The testing gas circuit with the structure has the defects of complex structure, difficult processing, difficult assembly and large volume of the content cavity, so that the cost is high, the efficiency is low, and higher testing requirements and batch application are difficult to meet.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, one of the purposes of the utility model is to provide a simple axial inflation sealing performance testing device, which is used for testing the air tightness of non-sealing products or sealing products and has the characteristics of simple structure, convenient processing and assembly and good testing precision; furthermore, the test gas circuit structure is particularly easy to process into a test gas circuit structure with an ultra-small inner cavity, and the requirements of the air tightness test and the batch application of ultra-small sealing products are met; further, the air tightness test requirement and batch application of the non-sealing product can be met.
The utility model discloses an one of the purpose adopts following technical scheme to realize:
a simple axial inflation sealing performance testing device is characterized by comprising a main shell and a rotating body;
an accommodating chamber is arranged in the main shell, and at least one test channel communicated with the accommodating chamber is arranged on the main shell;
the rotating body is arranged in the accommodating cavity and can rotate relative to the main shell; an axial air inlet/exhaust channel and at least one air channel are arranged in the rotating body; one end of the air inlet/outlet channel is provided with an air inlet/outlet, and the other end of the air inlet/outlet channel is closed; one end of the air path channel is provided with a first connecting port communicated with the air inlet/outlet channel, and the other end of the air path channel is provided with a second connecting port communicated with the accommodating cavity;
the device also comprises a sealing structure;
during the rotation of the rotating body in the counterclockwise or clockwise direction with respect to the main casing, the airtightness testing structure simultaneously satisfies the following conditions:
the first condition is as follows: the second connecting port of the air channel is in butt-joint communication with the testing channel, and the joint between the second connecting port and the testing channel is sealed by the sealing structure, so that the air inlet/outlet channel, the air channel and the testing channel are sequentially communicated to form a sealed air charging/sucking channel;
and a second condition: and the second connecting port of the air channel is disconnected with the testing channel in a staggered manner, one port of the testing channel is closed, and the other port of the testing channel is used for forming a sealed air tightness testing channel with a product to be tested.
In an alternative embodiment, the sealing structure comprises a first sealing ring disposed at an opening of the testing channel adjacent to one side of the receiving chamber;
in the alternative, the first and second sets of the first,
the sealing structure comprises a sealing sleeve sleeved on the periphery of the rotating body, through holes are formed in the side wall of the sealing sleeve, and the through holes are the same in number as the testing channels and are arranged in one-to-one correspondence; the through hole is communicated with the second connecting port of the air channel.
In an optional implementation manner, the test device further comprises sealing connectors which are the same in number as the test channels and are arranged in one-to-one correspondence, each sealing connector is provided with a first sealing interface and a second sealing interface, the first sealing interface is in sealing connection with an opening of one side, far away from the containing chamber, of each test channel, and the second sealing interface is used for being in sealing connection with an air inlet/outlet of a product to be tested; when one port of the test channel is closed, the other port of the test channel is communicated with a product to be tested through a sealing connector to form the air tightness test channel; and the product to be detected is a non-sealing product.
In an optional embodiment, the test fixture further comprises test fixtures which are the same in number as the test channels and are arranged in a one-to-one correspondence manner, each test fixture comprises a test fixture body, a test cavity is arranged on each test fixture body, and the test cavities are communicated with the test channels; when one port of the test channel is closed, the other port of the test channel is communicated with a test cavity for placing a product to be tested to form the air tightness test channel; the product to be detected is a sealing product.
In an alternative embodiment, a second sealing ring is arranged at the opening of the testing cavity adjacent to one side of the containing cavity.
In an alternative embodiment, the rotating body further includes a rotating shaft extending axially outward from a center of the rotating body; still be equipped with actuating mechanism on the main casing body, actuating mechanism's output shaft with pivot fixed connection is rotatory by actuating mechanism drive pivot, drives the rotator by the pivot again along clockwise or anticlockwise rotation.
In an alternative embodiment, the test device further comprises a pressure sensor for detecting the air pressure in the air tightness test channel.
In an alternative embodiment, the center of the rotary body is provided with one of the intake/exhaust passages in the axial direction; n gas path channels are uniformly arranged on the same radial plane of the rotating body along the radial direction, and N is more than or equal to 2; an included angle a is formed between every two adjacent air channel channels, and a is 360 DEG/N; the number of the gas path channels is the same as that of the test channels and is arranged in a one-to-one correspondence manner.
In an optional implementation manner, the simple axial inflation tightness testing device comprises more than two groups of testing gas path structures, and each testing gas path structure consists of a gas path channel, a testing channel and a testing cavity; the test gas circuit structure meets any one of the following test modes:
the first test mode is as follows: each two groups of the test gas path structures are used in parallel, wherein one group is used for testing a to-be-tested sealing product, the other group is used for testing a standard sealing product, and the two groups of the test gas path structures are both provided with pressure sensors for detecting the gas pressure in the gas tightness test channel to form a pressure difference comparison gas path;
and a second test mode: in all the test gas circuit structures, one group of test gas circuit structures are used for testing the standard sealing products, and the rest gas circuit structures are respectively used for testing the sealing products to be tested; each group of gas circuit structures is provided with a pressure sensor for detecting the gas pressure in the gas tightness test channel;
and a third test mode: all the test gas circuit structures are respectively used for testing the to-be-tested sealing product; and each group of gas circuit structures is provided with a pressure sensor for detecting the gas pressure in the gas tightness test channel.
In an optional implementation manner, the simple axial inflation tightness testing device comprises more than two groups of testing gas path structures, and each testing gas path structure consists of a gas path channel, a testing channel and a sealing connector; the test gas circuit structure meets any one of the following test modes:
the first test mode is as follows: each two groups of test gas path structures are used in parallel, wherein one group is used for testing a non-sealed product to be tested, the other group is used for testing a standard non-sealed product, and the two groups of test gas path structures are both provided with pressure sensors for detecting the gas pressure in the gas tightness test channel to form a pressure difference comparison gas path;
and a second test mode: in all the test gas circuit structures, one group of test gas circuit structures are used for testing standard non-sealed products, and the rest gas circuit structures are respectively used for testing the non-sealed products to be tested; each group of gas circuit structures is provided with a pressure sensor for detecting the gas pressure in the gas tightness test channel;
and a third test mode: all the test gas circuit structures are respectively used for testing the non-sealing product to be tested; and each group of gas circuit structures is provided with a pressure sensor for detecting the gas pressure in the gas tightness test channel.
In an alternative embodiment, a differential pressure sensor is further disposed between every two sets of pressure sensors of the test gas path structure.
In an alternative embodiment, the device further comprises an air source device connected with the air inlet/outlet of the air inlet/outlet channel; the air source device is a vacuum pumping device or an air charging/sucking pressurizing device.
In an alternative embodiment, the main housing is a split structure, and includes more than two sub-housings, and the sub-housings are fixedly connected with each other in a detachable connection manner.
In an alternative embodiment, the receiving chamber is circular in shape, and the rotating body is circular in shape.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. the utility model comprises a main shell, a rotator and a sealing structure; during the rotation of the rotating body in the counterclockwise or clockwise direction with respect to the main casing, the airtightness testing structure simultaneously satisfies the following conditions: the first condition is as follows: the second connecting port of the air channel is in butt-joint communication with the testing channel, and the joint between the second connecting port and the testing channel is sealed by the sealing structure, so that the air inlet/outlet channel, the air channel and the testing channel are sequentially communicated to form a sealed air charging/sucking channel; and a second condition: the second connecting port of the gas path channel is disconnected with the test channel in a staggered manner, one port of the test channel is closed, and the other port of the test channel is used for forming a sealed gas tightness test channel with a product to be tested; the device is used for carrying out gas tightness test on non-sealed products or sealed products, adopts the rotator to realize switching between gas circuit channel and the test channel, does not need to set up solenoid valve and relevant pipe fitting accessory on too much valve pipeline formula test circuit, has simple structure, processing and convenient assembling, test accuracy is good and convenient operation's advantage. The traditional valve pipeline type test loop cannot achieve ultra-small volume of a chip test level, and the device meets the air tightness test requirements and batch application of non-sealed products and sealed products.
2. The utility model discloses still include the sealing connector who sets up with test channel quantity is the same and the one-to-one, it can satisfy the gas tightness test requirement and the batchization of non-sealed article and use. In addition, the test fixture is the same as the test channels in number and is arranged in a one-to-one correspondence mode, the test air path structure with the ultra-small inner cavity is particularly easy to process, and the air tightness test requirements and batch application of ultra-small sealing products are met.
3. The rotating body of the utility model also comprises a rotating shaft which extends outwards from the center of the rotating body along the axial direction; the main shell is also provided with a driving mechanism, an output shaft of the driving mechanism is fixedly connected with the rotating shaft, the rotating shaft is driven to rotate by the driving mechanism, and then the rotating body is driven by the rotating shaft to rotate clockwise or anticlockwise. Preferably, the drive mechanism is a servo motor. By the design, the automatic control of the rotating body can be realized, the accuracy of the rotating angle is ensured, and the labor intensity is reduced.
4. The simple axial inflation tightness testing device of the utility model comprises more than two groups of testing gas circuit structures; by the design, multiple channels can be used in parallel, and every two channels can form a pressure difference comparison gas circuit for use. The multi-channel parallel connection has the characteristics of good test consistency, convenient operation, high working efficiency and low labor cost.
5. The utility model discloses a test method just can realize switching between gas circuit passageway and the test channel through the rotation of drive rotator, does not need the various control valves of frequent operation, has that the measuring accuracy is good, convenient operation, work efficiency are high, the low characteristics of cost of labor. The method lays a technical foundation for the vigorous popularization and test in the industry, enables a large amount of application to be possible, can well promote the development of the industry and promote the development of the high-end equipment manufacturing industry. In the test use mode, a direct pressure test, a differential pressure test or a direct pressure comparison test can be adopted at the same time.
6. The utility model discloses a processing method cuts apart into the branch casing more than two with main casing body base member, has the characteristics that processing is convenient and the assembly is simple, has solved the inside processing that holds cavity, gas circuit, seal groove of casing and the assembly difficult problem of sealing member.
Drawings
FIG. 1 is a schematic structural diagram of a simple axial inflation sealing performance testing device in an air intake or exhaust state according to a first embodiment;
FIG. 2 is a schematic structural diagram of a simple axial inflation sealing performance testing apparatus in a pressure maintaining or air tightness testing state according to the first embodiment;
FIG. 3 is a schematic structural diagram of a main housing according to a first embodiment;
FIG. 4 is a schematic structural view of a rotating body according to the first embodiment;
FIG. 5 is a schematic structural diagram of a simple axial inflation sealing performance testing device with an air source device according to the first embodiment;
fig. 6 is a schematic structural view of the split main housing according to the first embodiment;
FIG. 7 is a schematic structural diagram of a simple axial inflation sealing performance testing device with two sets of testing gas paths according to the first embodiment;
FIG. 8 is a schematic structural diagram of a simple axial inflation sealing performance testing device with four sets of testing gas circuits according to the first embodiment;
FIG. 9 is a schematic structural diagram of a simple axial inflation sealing performance testing device with eight sets of testing gas circuits according to the first embodiment;
FIG. 10 is a schematic structural diagram of a simple axial inflation tightness testing device using a sealing sleeve according to a second embodiment;
fig. 11 is a schematic structural diagram of a simple axial inflation sealing performance testing device having two sets of testing gas circuit structures according to the second embodiment;
fig. 12 is a schematic structural diagram of a simple axial inflation sealing performance testing device with four sets of testing gas circuits according to the second embodiment;
fig. 13 is a schematic structural diagram of a simple axial inflation tightness testing device with eight sets of testing gas circuits according to the second embodiment;
FIG. 14 is a schematic structural diagram of a third embodiment of a simple axial inflation tightness testing device in an air intake or exhaust state;
FIG. 15 is a schematic structural diagram of a simple axial inflation sealing performance testing device with two sets of testing gas paths according to a third embodiment;
fig. 16 is a schematic structural diagram of a simple axial inflation tightness testing device with four sets of testing gas circuits according to a third embodiment;
fig. 17 is a schematic structural diagram of a simple axial inflation tightness testing device with eight sets of testing gas circuits according to the third embodiment;
FIG. 18 is a schematic structural diagram of a simple axial pneumatic tightness testing device using a sealing sleeve according to a fourth embodiment;
FIG. 19 is a schematic structural diagram of a simple axial inflation sealing performance testing device with two sets of testing gas paths according to a fourth embodiment;
FIG. 20 is a schematic structural diagram of a simple axial inflation tightness testing device with four sets of testing gas paths according to a fourth embodiment;
fig. 21 is a schematic structural diagram of a simple axial inflation tightness testing device with eight sets of testing air paths according to a fourth embodiment.
In the figure: 10. a main housing; 11. a housing chamber; 12. a test channel; 20. a rotating body; 21. a gas path channel; 211. a first connection port; 212. a second connection port; 22. an intake/exhaust passage; 31. a first seal ring; 32. sealing sleeves; 40. sealing the connector; 50. an air supply device; 61. a test fixture body; 62. a test chamber; 63. a second seal ring; 100. a non-sealed article; 200. and (7) sealing the product.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict. Except as specifically noted, the materials and equipment used in this example are commercially available. Examples of embodiments are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. In the description of the present application, "a plurality" means two or more unless specifically stated otherwise.
In the description of the present application, it should be noted that unless otherwise specifically stated or limited, the terms "connected," "communicating," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a connection through an intervening medium, a connection between two elements, or an interaction between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
The terms "first," "second," and the like in the description and in the claims of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The first embodiment is as follows:
referring to fig. 1-9, a simple axial inflation sealing performance testing device includes a main housing 10, a rotating body 20;
an accommodating chamber 11 is arranged inside the main shell 10, and at least one test channel 12 communicated with the accommodating chamber 11 is arranged on the main shell 10;
the rotating body 20 is disposed in the accommodating chamber 11, and the rotating body 20 and the main housing 10 can rotate relatively; an axial air inlet/outlet channel 22 and at least one air channel 21 are arranged in the rotating body 20; one end of the air inlet/outlet passage 22 is provided with an air inlet/outlet port, and the other end thereof is closed; one end of the air passage channel 21 is provided with a first connecting port 211 communicated with the air inlet/outlet channel, and the other end is provided with a second connecting port 212 communicated with the accommodating chamber;
the device also comprises a sealing structure;
during the rotation of the rotating body in the counterclockwise or clockwise direction with respect to the main casing, the airtightness testing structure simultaneously satisfies the following conditions:
the first condition is as follows: the second connecting port of the air channel is in butt-joint communication with the testing channel, and the joint between the second connecting port and the testing channel is sealed by the sealing structure, so that the air inlet/outlet channel, the air channel and the testing channel are sequentially communicated to form a sealed air charging/sucking channel;
and a second condition: and the second connecting port of the air channel is disconnected with the testing channel in a staggered manner, one port of the testing channel is closed, and the other port of the testing channel is used for forming a sealed air tightness testing channel with a product to be tested.
In the preferred implementation of the present invention, the simple axial inflation sealing performance testing device of this embodiment further includes a sealing connector 40 that is the same as the number of the testing channels and is disposed in a one-to-one correspondence manner, the sealing connector has a first sealing interface and a second sealing interface, the first sealing interface is hermetically connected to an opening of the testing channel on a side away from the accommodating chamber, and the second sealing interface is used for being hermetically connected to an air inlet/outlet of a product to be tested; when one port of the test channel is closed, the other port of the test channel is communicated with a product to be tested through a sealing connector to form the air tightness test channel; the product to be tested is a non-hermetic product 100.
In a preferred embodiment of the present invention, the sealing structure comprises a first sealing ring 31 disposed at an opening of the testing channel adjacent to one side of the receiving chamber. Specifically, the sealing ring may be a rubber sealing ring, a hydrogenated nitrile rubber sealing ring or a silicone rubber sealing ring.
In a preferred embodiment of the present invention, the rotating body further includes a rotating shaft extending outward from the center of the rotating body along the axial direction; the main shell is also provided with a driving mechanism, an output shaft of the driving mechanism is fixedly connected with the rotating shaft, the rotating shaft is driven to rotate by the driving mechanism, and then the rotating body is driven by the rotating shaft to rotate clockwise or anticlockwise. Preferably, the drive mechanism is a servo motor. By the design, the automatic control of the rotating body 20 can be realized, the accuracy of the rotating angle is ensured, and the labor intensity is reduced.
In the preferred embodiment of the present invention, the present invention further comprises an air source device 50 connected to the air inlet/outlet channel; the air source device is a vacuum pumping device or an air charging/sucking pressurizing device.
The utility model discloses in the implementation of preferred, the main casing body is split type structure, and it includes more than two branch casings, in order to dismantle the mode fixed connection of connecting between each branch casing. Specifically, the shell body can be divided into two halves, four quarters and the like.
In a preferred embodiment of the present invention, the receiving chamber is circular and the rotating body is circular corresponding to the receiving chamber.
The utility model discloses in the implementation of preferred, still including the pressure sensor who is arranged in detecting gas tightness test channel atmospheric pressure. The pressure sensor is a direct pressure sensor.
In a preferred embodiment of the present invention, the center of the rotating body is provided with one of the air inlet/outlet passages along an axial direction; n gas path channels are uniformly arranged on the same radial plane of the rotating body along the radial direction, and N is more than or equal to 2; an included angle a is formed between every two adjacent air channel channels, and a is 360 DEG/N; the number of the gas path channels is the same as that of the test channels and is arranged in a one-to-one correspondence manner. Specifically, when N is 2, a is 360 °/N is 360 °/2 is 180 °; when N is 3, a is 360 °/N is 360 °/3 is 120 °; when N is 4, a is 360 °/N is 360 °/4 is 90 °; when N is 8, a is 360 °/N is 360 °/8 is 45 °.
In the preferred implementation of the present invention, the simple axial inflation sealing performance testing device comprises more than two sets of testing gas circuit structures, and each testing gas circuit structure comprises a gas circuit channel, a testing channel and a sealing connector; the test gas circuit structure meets any one of the following test modes:
the first test mode is as follows: each two groups of test gas path structures are used in parallel, wherein one group is used for testing a non-sealed product to be tested, the other group is used for testing a standard non-sealed product, and the two groups of test gas path structures are both provided with pressure sensors for detecting the gas pressure in the gas tightness test channel to form a pressure difference comparison gas path;
and a second test mode: in all the test gas circuit structures, one group of test gas circuit structures are used for testing standard non-sealed products, and the rest gas circuit structures are respectively used for testing the non-sealed products to be tested; each group of gas circuit structures is provided with a pressure sensor for detecting the gas pressure in the gas tightness test channel;
and a third test mode: all the test gas circuit structures are respectively used for testing the non-sealing product to be tested; and each group of gas circuit structures is provided with a pressure sensor for detecting the gas pressure in the gas tightness test channel.
A test method of a simple axial inflation sealing test device comprises the following steps:
1) testing a single non-sealing product:
1-1) preparation steps: connecting the non-sealed product to be tested with the test channel through a sealing connector in a sealing manner, and connecting an air source device with an air inlet/outlet of the air inlet/outlet channel;
1-2) a charging/sucking step; the rotating body or the main shell is driven to rotate counterclockwise or clockwise by a preset angle, so that the second connecting port of the air channel is in butt joint communication with the testing channel, and the air inlet/exhaust channel, the air channel, the testing channel and the sealing connector are sequentially communicated to form a sealed air charging/sucking channel; pressurizing or vacuumizing the non-sealed product to be tested, recording the pressure value as P1 after a preset time or reaching a preset pressure, and stopping pressurizing or vacuumizing;
1-3) air tightness testing; continuing to drive the rotating body or the main shell to rotate in the same direction for a preset angle, wherein the second connecting port of the air channel is disconnected with the test channel in a staggered manner, one port of the test channel is closed, and the other port of the test channel is communicated with a to-be-tested non-sealed product through a sealing connector to form a sealed air tightness test channel; after the preset pressure maintaining time, detecting a pressure value in the test cavity, and recording the pressure value as P2; comparing the pressure difference between P2 and P1, and if the pressure difference exceeds a specified range, judging that the non-sealing product to be detected is an air-tightness unqualified product; and if the pressure difference value is within the specified range, judging that the non-sealing product to be detected is an air-tightness qualified product.
A test method of a simple axial inflation sealing test device comprises the following steps:
and (3) a double-non-sealing product comparison test step:
the preparation method comprises the following steps: the non-sealing product to be tested and the standard non-sealing product are respectively connected with a testing channel in a sealing way through a sealing connector, and two air source devices are respectively connected with two air inlet/exhaust channels; the same test steps are adopted for the non-sealing product to be tested and the standard non-sealing product;
and (3) charging/sucking: the rotating body or the main shell is driven to rotate counterclockwise or clockwise by a preset angle, so that the second connecting port of the air channel is in butt joint communication with the testing channel, and the air inlet/exhaust channel, the air channel, the testing channel and the sealing connector are sequentially communicated to form a sealed air charging/sucking channel; respectively pressurizing or vacuumizing the non-sealing product to be tested and the standard non-sealing product, and stopping pressurizing or vacuumizing after preset time or preset pressure is reached;
and (3) air tightness testing: continuing to drive the rotating body or the main shell to rotate in the same direction for a preset angle, wherein the second connecting port of the air channel is disconnected with the test channel in a staggered manner, one port of the test channel is closed, and the other port of the test channel is communicated with the to-be-tested non-sealed product or the standard non-sealed product through the sealing connector to form a sealed air tightness test channel; after the preset pressure maintaining time, respectively detecting pressure values in the two air tightness testing channels, comparing the pressure difference values in the two air tightness testing channels, and if the pressure difference value exceeds a specified range, judging that the non-sealing product to be tested is an air tightness unqualified product; and if the pressure difference value is within the specified range, judging that the non-sealing product to be detected is an air-tightness qualified product.
The utility model discloses in the implementation of preferred, still be provided with a pressure differential sensor between the pressure sensor of two sets of gas circuit structures, detect the pressure differential value that obtains in two gas tightness test channel through pressure differential sensor.
A processing method of a simple axial inflation sealing performance testing device comprises the following steps:
a main shell processing step: providing a main shell base body, and processing an accommodating chamber on the main shell base body; then cutting the main shell body at a position corresponding to the accommodating cavity, and dividing the main shell body into more than two sub-shells; processing a test channel on the sub-shell, and processing an annular sealing groove at an opening of the test channel, which is adjacent to one side of the accommodating chamber;
a rotating body processing step: providing a rotating body base body, processing an axial air inlet/exhaust channel in the rotating body base body, and processing at least one air channel on the same radial plane of the rotating body base body along the radial direction to obtain a rotating body;
assembling: and installing a sealing ring in the sealing groove of each test channel, assembling more than two sub-shells in a detachable and fixed connection mode to form a main shell, and installing the rotating body in the accommodating chamber of the main shell.
Example two:
referring to fig. 10-13, the present embodiment is characterized in that: the sealing structure comprises a sealing sleeve 32 sleeved on the periphery of the rotating body, through holes are formed in the side wall of the sealing sleeve, and the through holes are the same in number as the testing channels and are arranged in one-to-one correspondence; the through hole is communicated with the second connecting port of the air channel. In particular, the gland may be a rubber gland, a hydrogenated nitrile rubber gland or a silicone rubber gland.
The other structure is the same as the first embodiment.
A processing method of a simple axial inflation sealing performance testing device comprises the following steps:
a main shell processing step: providing a main shell base body, and processing an accommodating chamber on the main shell base body; then cutting the main shell body at a position corresponding to the accommodating cavity, and dividing the main shell body into more than two sub-shells; processing a test channel on the sub-shell;
a rotating body processing step: providing a rotating body base body, processing an axial air inlet/exhaust channel in the rotating body base body, and processing at least one air channel on the same radial plane of the rotating body base body along the radial direction to obtain a rotating body;
assembling: the periphery of the rotating body is provided with a sealing sleeve, more than two sub-shells are assembled in a detachable and fixed connection mode to form a main shell, and the rotating body is arranged in the accommodating cavity of the main shell.
Example three:
referring to fig. 14-17, a simple axial inflation sealing performance testing device includes a main housing 10, a rotating body 20;
an accommodating chamber 11 is arranged inside the main shell 10, and at least one test channel 12 communicated with the accommodating chamber 11 is arranged on the main shell 10;
the rotating body 20 is disposed in the accommodating chamber 11, and the rotating body 20 and the main housing 10 can rotate relatively; an axial air inlet/outlet channel 22 and at least one air channel 21 are arranged in the rotating body 20; one end of the air inlet/outlet passage 22 is provided with an air inlet/outlet port, and the other end thereof is closed; one end of the air passage channel 21 is provided with a first connecting port 211 communicated with the air inlet/outlet channel, and the other end is provided with a second connecting port 212 communicated with the accommodating chamber;
the device also comprises a sealing structure;
during the rotation of the rotating body in the counterclockwise or clockwise direction with respect to the main casing, the airtightness testing structure simultaneously satisfies the following conditions:
the first condition is as follows: the second connecting port of the air channel is in butt-joint communication with the testing channel, and the joint between the second connecting port and the testing channel is sealed by the sealing structure, so that the air inlet/outlet channel, the air channel and the testing channel are sequentially communicated to form a sealed air charging/sucking channel;
and a second condition: and the second connecting port of the air channel is disconnected with the testing channel in a staggered manner, one port of the testing channel is closed, and the other port of the testing channel is used for forming a sealed air tightness testing channel with a product to be tested.
In the preferred implementation of the present invention, the testing device further comprises testing fixtures having the same number as the testing channels and arranged in a one-to-one correspondence manner, wherein each testing fixture comprises a testing fixture body 61, a testing cavity 62 is arranged on the testing fixture body, and the testing cavity 62 is communicated with the testing channels; when one port of the test channel is closed, the other port of the test channel is communicated with a test cavity for placing a product to be tested to form the air tightness test channel; the product to be tested is a sealing product 200. The opening of the testing chamber 62 adjacent to one side of the accommodating chamber is provided with a second sealing ring 63.
In a preferred embodiment of the present invention, the sealing structure comprises a first sealing ring 31 disposed at an opening of the testing channel adjacent to one side of the receiving chamber. Specifically, the sealing ring may be a rubber sealing ring, a hydrogenated nitrile rubber sealing ring or a silicone rubber sealing ring.
In a preferred embodiment of the present invention, the rotating body further includes a rotating shaft extending outward from the center of the rotating body along the axial direction; the main shell is also provided with a driving mechanism, an output shaft of the driving mechanism is fixedly connected with the rotating shaft, the rotating shaft is driven to rotate by the driving mechanism, and then the rotating body is driven by the rotating shaft to rotate clockwise or anticlockwise. Preferably, the drive mechanism is a servo motor. By the design, the automatic control of the rotating body 20 can be realized, the accuracy of the rotating angle is ensured, and the labor intensity is reduced.
In the preferred embodiment of the present invention, the present invention further comprises an air source device 50 connected to the air inlet/outlet channel; the air source device is a vacuum pumping device or an air charging/sucking pressurizing device.
The utility model discloses in the implementation of preferred, the main casing body is split type structure, and it includes more than two branch casings, in order to dismantle the mode fixed connection of connecting between each branch casing. Specifically, the shell body can be divided into two halves, four quarters and the like.
In a preferred embodiment of the present invention, the receiving chamber is circular and the rotating body is circular corresponding to the receiving chamber.
The utility model discloses in the implementation of preferred, still including the pressure sensor who is arranged in detecting gas tightness test channel atmospheric pressure. The pressure sensor is a direct pressure sensor.
In a preferred embodiment of the present invention, the center of the rotating body is provided with one of the air inlet/outlet passages along an axial direction; n gas path channels are uniformly arranged on the same radial plane of the rotating body along the radial direction, and N is more than or equal to 2; an included angle a is formed between every two adjacent air channel channels, and a is 360 DEG/N; the number of the gas path channels is the same as that of the test channels and is arranged in a one-to-one correspondence manner. Specifically, when N is 2, a is 360 °/N is 360 °/2 is 180 °; when N is 3, a is 360 °/N is 360 °/3 is 120 °; when N is 4, a is 360 °/N is 360 °/4 is 90 °; when N is 8, a is 360 °/N is 360 °/8 is 45 °.
In a preferred implementation of the present invention, the simple axial inflation sealing performance testing device comprises more than two sets of testing gas circuit structures, and each testing gas circuit structure comprises a gas circuit channel, a testing channel and a testing cavity; the test gas circuit structure meets any one of the following test modes:
the first test mode is as follows: each two groups of the test gas path structures are used in parallel, wherein one group is used for testing a to-be-tested sealing product, the other group is used for testing a standard sealing product, and the two groups of the test gas path structures are both provided with pressure sensors for detecting the gas pressure in the gas tightness test channel to form a pressure difference comparison gas path;
and a second test mode: in all the test gas circuit structures, one group of test gas circuit structures are used for testing the standard sealing products, and the rest gas circuit structures are respectively used for testing the sealing products to be tested; each group of gas circuit structures is provided with a pressure sensor for detecting the gas pressure in the gas tightness test channel;
and a third test mode: all the test gas circuit structures are respectively used for testing the to-be-tested sealing product; and each group of gas circuit structures is provided with a pressure sensor for detecting the gas pressure in the gas tightness test channel.
A test method of a simple axial inflation sealing test device comprises the following steps:
1) testing a single sealing product:
1-1) preparation steps: placing the to-be-tested sealing product into a testing cavity, and connecting an air source device with an air inlet/outlet channel;
1-2) a charging/sucking step; the rotating body or the main shell is driven to rotate counterclockwise or clockwise by a preset angle, so that the second connecting port of the air channel is in butt joint communication with the test channel, and the air inlet/outlet channel, the air channel, the test channel and the test cavity are sequentially communicated to form a sealed air charging/sucking channel; pressurizing or vacuumizing the to-be-detected sealing product, recording the pressure value as P3 after a preset time or reaching a preset pressure, and stopping pressurizing or vacuumizing;
1-3) a small leakage test step; continuously driving the rotating body or the main shell to rotate in the same direction by a preset angle, wherein the first connecting port of the air channel is disconnected with the air inlet/outlet channel in a staggered manner, the second connecting port of the air channel is disconnected with the testing channel in a staggered manner, and the testing channel is closed, so that the testing channel is communicated with the testing cavity to form a sealed small-leakage testing channel; after the preset pressure maintaining time, detecting a pressure value in the test cavity, and recording the pressure value as P4; comparing the pressure difference between the P4 and the P3, and if the pressure difference exceeds a specified range, judging that the to-be-detected sealing product is a small-leakage unqualified product; and if the pressure difference value is within the specified range, judging that the sealed product to be detected is a small-leakage qualified product.
A test method of a simple axial inflation sealing test device comprises the following steps:
and (3) a double-seal product comparison test step:
a device preparation step: respectively placing a to-be-tested sealing product and a standard sealing product into two testing cavities, and connecting an air source device with an air inlet/outlet channel; the same testing steps are adopted for the sealing product to be tested and the standard sealing product;
a charging/sucking step; the rotating body or the main shell is driven to rotate counterclockwise or clockwise by a preset angle, so that the second connecting port of the air channel is in butt joint communication with the test channel, and the air inlet/outlet channel, the air channel, the test channel and the test cavity are sequentially communicated to form a sealed air charging/sucking channel; respectively pressurizing/vacuumizing the to-be-measured sealing product and the standard sealing product, and stopping pressurizing/vacuumizing after a preset time or when a preset pressure is reached;
testing small leakage; continuously driving the rotating body or the main shell to rotate in the same direction by a preset angle, and disconnecting the second connecting port of the air channel and the test channel in a staggered manner, wherein the test channels are all closed, so that the test channel is communicated with the test cavity to form a sealed small-leakage test channel; after the preset pressure maintaining time, comparing the pressure difference values in the two test cavities, and if the pressure difference value exceeds a specified range, judging that the to-be-tested sealing product is a small-leakage unqualified product; and if the pressure difference value is within the specified range, judging that the sealed product to be detected is a small-leakage qualified product.
The utility model discloses in the implementation of preferred, still be provided with a pressure differential sensor between the pressure sensor of two sets of gas circuit structures, detect the pressure differential value that obtains in two gas tightness test channel through pressure differential sensor.
A processing method of a simple axial inflation sealing performance testing device comprises the following steps:
a main shell processing step: providing a main shell base body, and processing an accommodating chamber on the main shell base body; then cutting the main shell body at a position corresponding to the accommodating cavity, and dividing the main shell body into more than two sub-shells; processing a test channel on the sub-shell, and processing an annular sealing groove at an opening of the test channel, which is adjacent to one side of the accommodating chamber;
a rotating body processing step: providing a rotating body base body, processing an axial air inlet/exhaust channel in the rotating body base body, and processing at least one air channel on the same radial plane of the rotating body base body along the radial direction to obtain a rotating body;
assembling: and installing a sealing ring in the sealing groove of each test channel, assembling more than two sub-shells in a detachable and fixed connection mode to form a main shell, and installing the rotating body in the accommodating chamber of the main shell.
Example four:
referring to fig. 18 to 21, the present embodiment is characterized in that: the sealing structure comprises a sealing sleeve 32 sleeved on the periphery of the rotating body, through holes are formed in the side wall of the sealing sleeve, and the through holes are the same in number as the testing channels and are arranged in one-to-one correspondence; the through hole is communicated with the second connecting port of the air channel. In particular, the gland may be a rubber gland, a hydrogenated nitrile rubber gland or a silicone rubber gland.
The other structures are the same as those of the embodiment.
A processing method of a simple axial inflation sealing performance testing device comprises the following steps:
a main shell processing step: providing a main shell base body, and processing an accommodating chamber on the main shell base body; then cutting the main shell body at a position corresponding to the accommodating cavity, and dividing the main shell body into more than two sub-shells; processing a test channel on the sub-shell;
a rotating body processing step: providing a rotating body base body, processing an axial air inlet/exhaust channel in the rotating body base body, and processing at least one air channel on the same radial plane of the rotating body base body along the radial direction to obtain a rotating body;
assembling: the periphery of the rotating body is provided with a sealing sleeve, more than two sub-shells are assembled in a detachable and fixed connection mode to form a main shell, and the rotating body is arranged in the accommodating cavity of the main shell.
Other examples are as follows:
the quantity N of gas circuit passageway is 5, 6, 7, 9, 10 or more, corresponds with it, the utility model discloses a 5, 6, 7, 9, 10 or more test gas circuit structures. The utility model discloses a leakproofness testing arrangement is not limited to rotatory mode work, also can realize the switching of gas circuit state through the endwise slip of axle and casing to realize equal test function.
While only certain features and embodiments of the application have been illustrated and described, many modifications and changes may occur to those skilled in the art (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the scope and spirit of the invention in the claims.
Finally, it should be noted that: the above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (14)
1. A simple axial inflation sealing performance testing device is characterized by comprising a main shell and a rotating body;
an accommodating chamber is arranged in the main shell, and at least one test channel communicated with the accommodating chamber is arranged on the main shell;
the rotating body is arranged in the accommodating cavity and can rotate relative to the main shell; an axial air inlet/exhaust channel and at least one air channel are arranged in the rotating body; one end of the air inlet/outlet channel is provided with an air inlet/outlet, and the other end of the air inlet/outlet channel is closed; one end of the air path channel is provided with a first connecting port communicated with the air inlet/outlet channel, and the other end of the air path channel is provided with a second connecting port communicated with the accommodating cavity;
the device also comprises a sealing structure; during the rotation of the rotating body in the counterclockwise or clockwise direction with respect to the main casing, the airtightness testing structure simultaneously satisfies the following conditions: the first condition is as follows: the second connecting port of the air channel is in butt-joint communication with the testing channel, and the joint between the second connecting port and the testing channel is sealed by the sealing structure, so that the air inlet/outlet channel, the air channel and the testing channel are sequentially communicated to form a sealed air charging/sucking channel; and a second condition: and the second connecting port of the air channel is disconnected with the testing channel in a staggered manner, one port of the testing channel is closed, and the other port of the testing channel is used for forming a sealed air tightness testing channel with a product to be tested.
2. The compact axial inflation tightness test device according to claim 1, wherein the sealing structure comprises a first sealing ring disposed at an opening of the test channel adjacent to one side of the receiving chamber;
in the alternative, the first and second sets of the first,
the sealing structure comprises a sealing sleeve sleeved on the periphery of the rotating body, through holes are formed in the side wall of the sealing sleeve, and the through holes are the same in number as the testing channels and are arranged in one-to-one correspondence; the through hole is communicated with the second connecting port of the air channel.
3. The simple axial inflation sealing performance testing device according to claim 1, further comprising sealing connectors which are the same in number as the testing channels and are arranged in one-to-one correspondence, wherein each sealing connector is provided with a first sealing interface and a second sealing interface, the first sealing interface is in sealing connection with an opening of the testing channel on one side far away from the containing chamber, and the second sealing interface is used for being in sealing connection with an air inlet/outlet of a product to be tested; when one port of the test channel is closed, the other port of the test channel is communicated with a product to be tested through a sealing connector to form the air tightness test channel; and the product to be detected is a non-sealing product.
4. The simple axial inflation sealing performance testing device according to claim 1, further comprising testing clamps which are the same in number as the testing channels and are arranged in one-to-one correspondence, wherein each testing clamp comprises a testing clamp body, a testing cavity is arranged on the testing clamp body, and the testing cavity is communicated with the testing channels; when one port of the test channel is closed, the other port of the test channel is communicated with a test cavity for placing a product to be tested to form the air tightness test channel; the product to be detected is a sealing product.
5. The simple axial inflation sealing performance testing device of claim 4, wherein the opening of the testing cavity adjacent to one side of the containing cavity is provided with a second sealing ring.
6. The simple axial inflation sealing test device according to claim 1, wherein the rotating body further comprises a rotating shaft extending axially outward from the center of the rotating body; still be equipped with actuating mechanism on the main casing body, actuating mechanism's output shaft with pivot fixed connection is rotatory by actuating mechanism drive pivot, drives the rotator by the pivot again along clockwise or anticlockwise rotation.
7. The compact axial inflation tightness test device according to claim 1, further comprising a pressure sensor for detecting air pressure in the air tightness test channel.
8. The direct axial inflation sealing test device according to claim 1, wherein the center of the rotating body is provided with one of the air inlet/outlet channels along the axial direction; n gas path channels are uniformly arranged on the same radial plane of the rotating body along the radial direction, and N is more than or equal to 2; an included angle a is formed between every two adjacent air channel channels, and a is 360 DEG/N; the number of the gas path channels is the same as that of the test channels and is arranged in a one-to-one correspondence manner.
9. The simple axial inflation tightness test device according to claim 4, wherein the simple axial inflation tightness test device comprises more than two groups of test gas path structures, and each test gas path structure consists of a gas path channel, a test channel and a test cavity; the test gas circuit structure meets any one of the following test modes:
the first test mode is as follows: each two groups of the test gas path structures are used in parallel, wherein one group is used for testing a to-be-tested sealing product, the other group is used for testing a standard sealing product, and the two groups of the test gas path structures are both provided with pressure sensors for detecting the gas pressure in the gas tightness test channel to form a pressure difference comparison gas path;
and a second test mode: in all the test gas circuit structures, one group of test gas circuit structures are used for testing the standard sealing products, and the rest gas circuit structures are respectively used for testing the sealing products to be tested; each group of gas circuit structures is provided with a pressure sensor for detecting the gas pressure in the gas tightness test channel;
and a third test mode: all the test gas circuit structures are respectively used for testing the to-be-tested sealing product; and each group of gas circuit structures is provided with a pressure sensor for detecting the gas pressure in the gas tightness test channel.
10. The simple axial inflation tightness test device according to claim 3, wherein the simple axial inflation tightness test device comprises more than two groups of test gas path structures, and each test gas path structure consists of a gas path channel, a test channel and a sealing connector;
the test gas circuit structure meets any one of the following test modes:
the first test mode is as follows: each two groups of test gas path structures are used in parallel, wherein one group is used for testing a non-sealed product to be tested, the other group is used for testing a standard non-sealed product, and the two groups of test gas path structures are both provided with pressure sensors for detecting the gas pressure in the gas tightness test channel to form a pressure difference comparison gas path;
and a second test mode: in all the test gas circuit structures, one group of test gas circuit structures are used for testing standard non-sealed products, and the rest gas circuit structures are respectively used for testing the non-sealed products to be tested; each group of gas circuit structures is provided with a pressure sensor for detecting the gas pressure in the gas tightness test channel;
and a third test mode: all the test gas circuit structures are respectively used for testing the non-sealing product to be tested; and each group of gas circuit structures is provided with a pressure sensor for detecting the gas pressure in the gas tightness test channel.
11. The straightforward axial inflation tightness testing apparatus according to claim 9 or 10, wherein a differential pressure sensor is further disposed between each two sets of pressure sensors of the testing air path structure.
12. The simple axial inflation sealing test device according to claim 1, further comprising an air source device connected to the air inlet/outlet port of the air inlet/outlet channel; the air source device is a vacuum pumping device or an air charging/sucking pressurizing device.
13. The simple axial inflation sealing performance testing device according to claim 1, wherein the main housing is a split structure, and comprises more than two sub-housings, and the sub-housings are fixedly connected in a detachable connection manner.
14. The simplified axial inflation tightness testing device according to claim 1, wherein the receiving chamber is circular in shape, and the rotating body is circular in shape corresponding thereto.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113008478A (en) * | 2020-07-29 | 2021-06-22 | 广州阿普顿自动化系统有限公司 | Simple axial inflation sealing performance testing device and method and processing method |
| CN114486116A (en) * | 2021-12-31 | 2022-05-13 | 成都承奥科技有限公司 | Mechanical seal air tightness detection tester |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113008478A (en) * | 2020-07-29 | 2021-06-22 | 广州阿普顿自动化系统有限公司 | Simple axial inflation sealing performance testing device and method and processing method |
| CN114486116A (en) * | 2021-12-31 | 2022-05-13 | 成都承奥科技有限公司 | Mechanical seal air tightness detection tester |
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