CN215004150U - Gas circuit structure of dry detection instrument - Google Patents

Abstract

The utility model belongs to the technical field of dry detection instrument, and discloses a gas circuit structure of a dry detection instrument, which comprises an integrated block, wherein the side surface of the integrated block is provided with a gas source port, a gas outlet, a standard piece interface and a detected piece interface, the standard piece interface is connected with a standard piece, the integrated block is provided with an inflation valve, a balance valve and a differential pressure sensor, the inflation valve and the balance valve are respectively provided with a control interface, the inflation valve is provided with a first gas port, a second gas port and a third gas port, the second gas port is communicated with a detected piece pipeline, the third gas port is communicated with a standard piece pipeline, the balance valve is provided with a fourth gas port, a fifth gas port and a sixth gas port, the detected piece pipeline and the standard piece pipeline are respectively communicated with a pressure sensor, the utility model has the advantages of simple and reasonable structure, convenient, rapid detection, cleanness, accuracy and low cost, and full gas control design, and no temperature caused by electromagnetic interference and frequent action of an electromagnetic valve, therefore, the detection precision and the detection stability of the dry detection instrument are greatly improved.

Description

Gas circuit structure of dry detection instrument

Technical Field

The utility model belongs to the technical field of examine the appearance futilely, concretely relates to examine gas circuit structure of appearance futilely.

Background

With the development and progress of science and technology, the requirements of people on things are quite exquisite and fine from old thinking that people can use things, only with continuous progress or innovation ideas, a new form is generated to improve the added value of a product, and the product can survive under the test of market competition fierce, compared with the traditional test piece tightness detection method, the dry inspection instrument adopts a water immersion or oil immersion visual bubble method, the adverse effects of moisture rusting, impurity immersion and the like on workpieces can not be brought, and the problem that after a fussy test piece is not available, water (or oil) attached to the surface needs to be treated.

However, the existing dry detection instrument mostly adopts an electromagnetic valve for pressure control, electromagnetic interference and temperature generated by frequent action of the electromagnetic valve can affect the detection precision and the detection stability of the dry detection instrument, and the gas circuit structure is complex and difficult to produce; the dry detection instrument in the prior art does not protect the differential pressure sensor, and the instantaneous air pressure difference has the possibility of causing damage to the high-precision differential pressure sensor.

SUMMERY OF THE UTILITY MODEL

To the problem that the above-mentioned background art provided, the utility model aims at: aiming at providing an air path structure of a dry detection instrument.

In order to realize the technical purpose, the utility model discloses a technical scheme as follows:

a gas circuit structure of a dry detection instrument comprises an integrated block, wherein a gas source port, a gas outlet, a standard part interface and a detected part interface are arranged on the side surface of the integrated block, the standard part interface is connected with a standard part, an inflation valve, a balance valve and a differential pressure sensor are installed on the integrated block, the inflation valve and the balance valve are respectively provided with a control interface, the inflation valve is provided with a first gas port, a second gas port and a third gas port, the first gas port is communicated with the gas source port, the second gas port is communicated with a detected part pipeline, the detected part pipeline is communicated with the detected part interface, the third gas port is communicated with a standard part pipeline, the standard part pipeline is communicated with the standard part interface, the balance valve is provided with a fourth gas port, a fifth gas port and a sixth gas port, the fourth gas port is communicated with the detected part pipeline, and the fifth gas port is communicated with the standard part pipeline, the sixth air port is communicated with the air exhaust port, the measured piece pipeline and the standard piece pipeline are communicated with the differential pressure sensor, and the measured piece pipeline and the standard piece pipeline are communicated with the pressure sensor.

Further inject, the inflation valve with the balanced valve all includes the valve body, the valve body both ends are connected with sealed piece, the inside sliding connection of valve body has first slider and second slider, first slider with second slider screwed connection, be connected with the spring between first slider and the valve body, such design, work as control interface is to when supplying gas in the valve body, the second slider rises, drives first slider rises, and then realizes opening in step the mesh of first gas port, second gas port and third gas port, guarantees simultaneously through second gas port and third gas port emit into the atmospheric pressure of measured piece pipeline and standard piece pipeline the same.

Further, the standard parts are provided with a plurality of standard parts, the volume of each standard part is different, and the design is convenient for selecting proper standard parts according to different tested parts, so that the reliability of the test result is ensured.

Further, the pipeline of the measured part and the pipeline of the standard part are integrally formed, and the air tightness is ensured by the design.

Further, the standard part interface and the tested part interface are both quick-plugging interfaces, and the design facilitates quick connection and use.

Adopt the beneficial effects of the utility model:

1. the utility model has simple and reasonable structure, convenient and quick detection, cleanness, accuracy and low cost;

2. the utility model has the advantages that the structure design of the full pneumatic control has no temperature generated by electromagnetic interference and frequent action of the electromagnetic valve, thereby greatly improving the detection precision and the detection stability of the dry detection instrument;

3. the utility model discloses saved a lot of steps for the logic control who examines the appearance futilely, had fundamental guarantee to differential pressure sensor's protection, admitted air in step and give vent to anger in step moreover, prevented that the atmospheric pressure difference from to high-accuracy differential pressure sensor's damage, prolonged the life who examines the appearance futilely, reduced the maintenance cost who examines the appearance futilely.

Drawings

The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;

fig. 1 is a schematic structural diagram of an embodiment of a gas circuit structure of a dry detection instrument of the present invention;

fig. 2 is an internal schematic view of an integrated block of an embodiment of a gas path structure of a dry detection instrument of the present invention;

fig. 3 is a schematic view of a cross-sectional structure of an inflation valve according to an embodiment of a gas circuit structure of the dry detection instrument of the present invention;

the main element symbols are as follows:

the device comprises an integrated block 1, a gas source port 2, an exhaust port 3, a standard part interface 4, a tested part interface 5, an inflation valve 6, a first gas port 61, a second gas port 62, a third gas port 63, a tested part pipeline 64, a standard part pipeline 65, a balance valve 7, a fourth gas port 71, a fifth gas port 72, a sixth gas port 73, a differential pressure sensor 8, a control interface 9, a pressure sensor 10, a valve body 111, a sealing block 112, a first sliding block 113, a second sliding block 114 and a spring 115.

Detailed Description

In order to make the present invention better understood by those skilled in the art, the technical solutions of the present invention are further described below with reference to the accompanying drawings and examples.

As shown in fig. 1, fig. 2 and fig. 3, the gas path structure of the dry test instrument of the present invention comprises an integrated block 1, a gas source port 2, a gas outlet 3, a standard component interface 4 and a tested component interface 5 are arranged on the side surface of the integrated block 1, the standard component interface 4 is connected with a standard component, the integrated block 1 is provided with an inflation valve 6, a balance valve 7 and a differential pressure sensor 8, the inflation valve 6 and the balance valve 7 are respectively provided with a control interface 9, the inflation valve 6 is provided with a first gas port 61, a second gas port 62 and a third gas port 63, the first gas port 61 is communicated with the gas source port 2, the second gas port 62 is communicated with a tested component pipeline 64, the tested component pipeline 64 is communicated with the tested component interface 5, the third gas port 63 is communicated with a standard component pipeline 65, the standard component pipeline 65 is communicated with the standard component interface 4, the balance valve 7 is provided with a fourth gas port 71, a fifth gas port 72 and a sixth gas port 73, the fourth gas port 71 is communicated with the tested component pipeline 64, the fifth air port 72 is communicated with the standard component pipeline 65, the sixth air port 73 is communicated with the exhaust port 3, the measured component pipeline 64 and the standard component pipeline 65 are both communicated with the differential pressure sensor 8, and the measured component pipeline 64 and the standard component pipeline 65 are both communicated with the pressure sensor 10.

In the embodiment, when the air path structure of the dry detection instrument is used, the air source port 2 is communicated, a standard part suitable for a detected part is selected to be connected with the standard part interface 4, and the detected part is connected with the detected part interface 5; the air pressure is supplied to the control interface 9 of the inflation valve 6, so that the inflation valve 6 operates, the air pressure enters the inflation valve 6 through the air source port 2 and then enters the second air port 62 and the third air port 63 through the first air port 61 in an equal amount in a synchronous manner, and then is discharged to the second air port 62 and the third air port 63 in an equal amount, and respectively enters the pipeline 64 of the measured part and the pipeline 65 of the standard part, and the arrangement of the pressure sensor 10 can observe the entering condition of the air pressure and the air pressure of the pipeline 64 of the measured part and the pipeline 65 of the standard part; stopping the pressure supply of the control interface 9 of the inflation valve 6, stopping the operation of the inflation valve 6, plugging the first air port 61, the second air port 62 and the third air port 63, entering a pressure maintaining stage, judging whether the detected piece leaks or not through the differential pressure sensor 8, for example, if the detected piece leaks, the air pressure of a pipeline 64 of the detected piece is reduced, and then the differential pressure sensor 8 operates along with the air pressure, so as to achieve the detection purpose; the pressurize time finishes the mouth, gives atmospheric pressure to the control interface 9 of balanced valve 7, balanced valve 7 operation, fourth gas port 71, fifth gas port 72 and sixth gas port 73 are opened in step, then by the synchronous equivalent of atmospheric pressure of survey piece pipeline 64 and standard component pipeline 65 in fourth gas port 71 and fifth gas port 72 get into balanced valve 7, and discharge through sixth gas port 73, give vent to anger in step, prevented that the atmospheric pressure difference from to high-accuracy differential pressure sensor 8's damage, the utility model has the advantages of simple and reasonable structure, detect convenient, swift, clean, accurate, with low costs, the structural design of full gas accuse does not have electromagnetic interference and the frequent action of solenoid valve and the temperature that produces to there is very big promotion to the detection precision and the detection stability of dry test appearance.

Preferably, the inflation valve 6 and the balance valve 7 both include a valve body 111, both ends of the valve body 111 are connected with sealing blocks 112, the valve body 111 is connected with a first slider 113 and a second slider 114 in a sliding manner, the first slider 113 is connected with the second slider 114 through screws, and a spring 115 is connected between the first slider 113 and the valve body 111, so that when the control interface 9 supplies air to the valve body 111, the second slider 114 rises to drive the first slider 113 to rise, thereby achieving the purpose of synchronously opening the first air port 61, the second air port 62 and the third air port 63, ensuring that the air pressures discharged into the to-be-measured pipeline 64 and the standard pipeline 65 through the second air port 62 and the third air port 63 are the same, and in fact, the inflation valve 6 and the balance valve 7 capable of achieving the effects of synchronously supplying air and synchronously discharging air according to specific situations can be considered.

Preferably, the standard component is configured with a plurality of standard components, the volume of each standard component is different, and the design is convenient for selecting a proper standard component according to the difference of the tested components, so that the reliability of the test result is ensured, and in fact, the customization of the standard components can be considered according to specific conditions.

The pipe 64 of the measured part and the pipe 65 of the standard part are preferably integrally formed, and this design ensures airtightness, and in fact, the forming method of the pipe 64 of the measured part and the pipe 65 of the standard part can be considered according to specific situations.

Preferably, the standard component interface 4 and the tested component interface 5 are both quick-plugging interfaces, and due to the design, the use of quick connection is facilitated, and actually, the connection mode of the standard component interface 4 and the tested component interface 5 can be considered according to specific conditions.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (5)

1. The utility model provides a gas circuit structure of appearance is examined futilely, includes integrated package (1), its characterized in that: the integrated block (1) is laterally provided with an air source port (2), an exhaust port (3), a standard part interface (4) and a tested part interface (5), the standard part interface (4) is connected with a standard part, the integrated block (1) is provided with an inflation valve (6), a balance valve (7) and a differential pressure sensor (8), the inflation valve (6) and the balance valve (7) are respectively provided with a control interface (9), the inflation valve (6) is provided with a first air port (61), a second air port (62) and a third air port (63), the first air port (61) is communicated with the air source port (2), the second air port (62) is communicated with a tested part pipeline (64), the tested part pipeline (64) is communicated with the tested part interface (5), the third air port (63) is communicated with a standard part pipeline (65), the standard part pipeline (65) is communicated with the standard part interface (4), balanced valve (7) are equipped with fourth gas port (71), fifth gas port (72) and sixth gas port (73), fourth gas port (71) with surveyed a pipeline (64) intercommunication, fifth gas port (72) with standard component pipeline (65) intercommunication, sixth gas port (73) with gas vent (3) intercommunication, surveyed a pipeline (64) with standard component pipeline (65) all with differential pressure sensor (8) intercommunication, surveyed a pipeline (64) with standard component pipeline (65) all communicates pressure sensor (10).

2. The air passage structure of the dry detection instrument according to claim 1, wherein: inflation valve (6) with balanced valve (7) all include valve body (111), valve body (111) both ends are connected with sealed piece (112), the inside sliding connection of valve body (111) has first slider (113) and second slider (114), first slider (113) with second slider (114) screw connection, first slider (113) with be connected with spring (115) between valve body (111).

3. The air passage structure of the dry detection instrument according to claim 2, wherein: the standard is configured with a plurality of standard, and each standard has different volume.

4. The air passage structure of the dry detection instrument according to claim 3, wherein: the measured part pipeline (64) and the standard part pipeline (65) are integrally formed.

5. The air passage structure of the dry detection instrument according to claim 4, wherein: the standard part interface (4) and the tested part interface (5) are both quick-plugging interfaces.

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