CN216669176U

CN216669176U - Portable air tightness detector

Info

Publication number: CN216669176U
Application number: CN202123048343.XU
Authority: CN
Inventors: 吴东; 张国良; 王增荣; 万雨; 曾德钊; 黄明
Original assignee: Dong Rong Precision Instrument Co ltd
Current assignee: Dong Rong Precision Instrument Co ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-06-03
Anticipated expiration: 2031-12-07

Abstract

The application relates to and provides a portable air tightness detector which comprises a box body, wherein the box body is provided with an air path structure and a control device electrically connected with the air path structure, and the air path structure comprises an air pump and a pressure measuring device; the air pump is connected with the flow meter and the third electromagnetic valve in two ways through a pipeline; the flowmeter is sequentially connected with the electromagnetic valve and the test interface through a pipeline; the third electromagnetic valve is connected with the test interface; and the pressure measuring device is connected with the pressure measuring interface through a pipeline. The flow meter comprises a first flow meter and a second flow meter; the electromagnetic valve comprises a first electromagnetic valve and a second electromagnetic valve; the air pump, the first flowmeter, the first electromagnetic valve and the test interface are sequentially connected in series; the air pump, the second flowmeter, the second electromagnetic valve and the test interface are sequentially connected in series. This application can carry out air leakage formula gas tightness and detect and pressure type gas tightness detects, and the kind of test work piece is more, and the suitability is wider.

Description

Portable air tightness detector

Technical Field

The application relates to the technical field of air tightness detection equipment, in particular to a portable air tightness detector.

Background

The air tightness detector can detect the air tightness of a test workpiece and generally comprises a pressure type air tightness detector and an air leakage type detector according to an air tightness detection principle. The pressure type air tightness detector mainly comprises a pressure sensor, a pressure sensor and a pressure controller. The air leakage type detector mainly fills gas with specified pressure into a test workpiece, maintains certain pressure in the test workpiece, and judges the air leakage of the test workpiece by measuring the current flow of the filled gas.

In the related art, in order to facilitate the detection of the airtightness of the test workpiece, each component of the airtightness detector is generally lightened and reduced in size, and the components are integrally placed in one box body, so that the airtightness detector is arranged in a portable manner.

The portable air tightness tester at present can only select to carry out the gas tightness detection through the direct pressure mode or can only select to use the flow mode to test the work piece, and the type of test is less, for example to the gas leakage formula gas tightness detection back of filter absorber, just can't adopt pressure formula gas tightness to test the work piece similar to chemical protective clothing and detect. In addition, the test pipeline of present portable gas tightness tester can directly place inside the box usually, and the test pipeline is dispersed more easily, has occupied great space.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a portable airtightness detector patent to solve the problem that the test types of the portable airtightness detector in the related technology are few.

In a first aspect, the portable air tightness detector comprises a box body, wherein the box body is provided with an air path structure and a control device electrically connected with the air path structure, and the air path structure comprises an air pump and a pressure measuring device; the air pump is connected with the flow meter and the third electromagnetic valve in two ways through a pipeline; the flowmeter is sequentially connected with the electromagnetic valve and the test interface through a pipeline; the third electromagnetic valve is connected with the test interface; and the pressure measuring device is connected with the pressure measuring interface through a pipeline.

In some embodiments, the flow meter comprises a first flow meter and a second flow meter; the electromagnetic valve comprises a first electromagnetic valve and a second electromagnetic valve; the air pump, the first flowmeter, the first electromagnetic valve and the test interface are sequentially connected in series; the air pump, the second flowmeter, the second electromagnetic valve and the test interface are sequentially connected in series.

In some embodiments, the first flow meter is a different scale than the second flow meter.

In some embodiments, the pressure measuring device is a pressure sensor or a pointer pressure gauge.

In some embodiments, an interface fixture is disposed between the air pump and the flow meter.

In some embodiments, the portable air-tightness detector further comprises a control panel, and the pressure measuring interface and the testing interface are arranged on the control panel.

In some embodiments, the portable air tightness detector further comprises a box cover hinged to the box body, the box cover is symmetrically provided with a plurality of clamping pieces, the test tube and the pressure measuring tube are both coiled, and the clamping pieces are arranged on the clamping pieces in a clamping manner.

In some embodiments, the control device includes a switching power supply, a relay board, and a remote I/O module, both of which are electrically connected to the relay board.

In some embodiments, the control panel further comprises a power switch, a USB interface, a display screen, and a timing module; the power switch is electrically connected with the switching power supply; the USB interface, the display screen and the timing module are all electrically connected with the relay board.

In some embodiments, the box body is provided with an inner frame, and the air path structure and the control device are both arranged in the inner frame.

The beneficial effect that technical scheme that this application provided brought includes: this application can carry out air leakage formula gas tightness and detect and pressure type gas tightness detects, and the kind of test work piece is more, and the suitability is wider.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of the gas path structure of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic top view of the present invention (without the case and the cover);

FIG. 4 is a schematic view of the front view structure of the present invention (without the case and the cover);

FIG. 5 is a rear view of the present invention (without the case and the cover);

FIG. 6 is a right side view of the present invention (without the case and the case cover);

in the figure: 1. an inner frame; 2. a switching power supply; 3. a remote I/O module; 4. a relay board; 5. a pressure measuring device; 6. an air pump; 7. a first flow meter; 8. a second flow meter; 9. a first solenoid valve; 10. a second solenoid valve; 11. a handle; 12. a pressure measuring interface; 13. a test interface; 14. a display screen; 15. a USB interface; 16. a power switch; 17. an interface fixture; 18. a pipeline; 19. a third electromagnetic valve; 20. a test tube; 21. a piezometric tube; 22. a box body; 23. a box cover; 24. a control panel; 25. a clamping piece; 26. and testing the workpiece.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1, 2, 3, 4, 5 and 6, an embodiment of the present application provides a portable air tightness detector, which includes a box 22. The box body 22 is provided with an air path structure and a control device electrically connected with the air path structure. The air path structure comprises an air pump 6 and a pressure measuring device 5. The air pump 6 is connected with a flow meter and a third electromagnetic valve 19 in two paths through a pipeline 18. The flowmeter is connected with the electromagnetic valve and the test interface 13 in sequence through a pipeline 18. The third electromagnetic valve 19 is connected with the test interface 13; the pressure measuring device 5 is connected with the pressure measuring interface 12 through a pipeline 18. In some embodiments, the pressure measuring device 5 is a pressure sensor or a pointer pressure gauge. In the use process, the pressure measuring interface 12 is connected with one end of a pressure measuring pipe 21, and the other end of the pressure measuring pipe 21 is connected with the test workpiece 26; the test interface 13 is connected with one end of a test tube 20, and the other end of the test tube 20 is connected with the test workpiece 26.

When air leakage type air tightness detection is required, for example, air tightness detection is carried out on the filter absorber. And integrally mounting the portable air tightness detector and the filter absorber and ensuring air tightness. The filter absorber is connected to the test port 13 via a test tube 20 and to the pressure measuring port 12 via a pressure measuring tube 21. The control device controls the electromagnetic valve to be opened, the air pump 6 to start and work, and the inflation quantity of the air pump 6 is adjusted, so that the pressure of the filter absorber is stable. And after the control device reads the data of the pressure measuring device 5 in the gas path structure and stabilizes the data, reading the inflation flow value in the gas path structure, wherein the flow of the gas inflated into the filter absorber is equal to the leakage gas flow of the filter absorber, and the flow value read by the control device is the leakage gas of the filter absorber.

When pressure type air tightness detection is needed, for example, the air tightness detection is carried out on the closed protective clothing. And installing the interface of the portable air tightness detector and the protective clothing into a whole and ensuring air tightness. The protective suit is connected with the test interface 13 through a test tube 20, and the protective suit is connected with the pressure measuring interface 12 through a pressure measuring tube 21. The control device controls the electromagnetic valve to be closed, opens the third electromagnetic valve and controls the flow of the gas input by the gas pump 6, so that the pressure of the protective suit stably rises. After the pressure data of the portable air tightness detector reaches the specified pressure, the control device can close the third electromagnetic valve 19, control the air pump 6 to stop working, enter an air tightness test state and start timing.

Through above-mentioned mode this application can carry out air leakage formula gas tightness and detect and pressure type gas tightness detects, and the kind of test work piece is more, and the suitability is wider.

In some embodiments, the flow meters include a first flow meter 7 and a second flow meter 8. The solenoid valves include a first solenoid valve 9 and a second solenoid valve 10. The air pump 6, the first flowmeter 7, the first electromagnetic valve 9 and the test interface 13 are sequentially connected in series, and the air pump 6, the second flowmeter 8, the second electromagnetic valve 10 and the test interface 13 are sequentially connected in series. The first flow meter 7 is a different range than the second flow meter. In the embodiment, the measuring range of the first flowmeter 7 is 0-50L/min, and the measuring range of the second flowmeter 8 is 0-5L/min. The adoption of the large-range and small-range flow meters provides coverage of a detection range and ensures measurement accuracy, so that the resolution of the portable air tightness detector is kept within 0.1L/min when air leakage of the portable air tightness detector is 0-50L/min. When the air leakage of the detection device is 0-5L/min, the resolution ratio is kept within 0.01L/min.

In some embodiments, the portable air-tightness detector further comprises a box cover 23 and a control panel 24, wherein the box cover 23 and the control panel are hinged with the box body 22. The box body 22 is provided with a cavity, one end of the box body 22 is provided with an opening, the control panel 24 is used for plugging the opening, and the control panel 24 is provided with a pressure measuring interface 12 and a testing interface 13. The box cover 23 is provided with a test tube 20 and a pressure measuring tube 21 in a clamping manner. The test tube 20 and the pressure measuring tube 21 are arranged at the box cover 23 in a clamping manner. The test tube 20 and the pressure measuring tube 21 are not easy to scatter, and the space of the portable air tightness detector is reduced, so that the portable air tightness detector is smaller in size and more convenient to carry.

In some embodiments, the case cover 23 is symmetrically provided with a plurality of clamping pieces 25, and the test tube 20 and the pressure measuring tube 21 are both coiled and clamped on the clamping pieces 25. The U-shaped fastener 25 is fixedly connected to the cap 23. The test tube 20 and the pressure measuring tube 21 can be wound at one end where the clamping piece 25 and the box cover 23 are fixed. The other end of the clamping piece 25 can prevent the test tube 20 and the pressure measuring tube 21 from being scattered.

In some embodiments, the control device comprises a switching power supply 2, a relay board 4, and a remote I/O module 3, wherein the switching power supply 2 and the remote I/O module 3 are electrically connected to the relay board 4. The control panel 24 further comprises a power switch 16, a USB interface 15, a display screen 14 and a timing module; the power switch 16 is electrically connected to the switching power supply 2; the USB interface 15, the display screen 14 and the timing module are all electrically connected with the relay board 4.

In some embodiments, an inner frame 1 is disposed in the cavity, the air path structure and the control device are both disposed in the inner frame 1, and the control panel 24 is screwed to the inner frame 1. The inner frame 1 mainly plays a supporting role.

In some embodiments, an interface clamp 17 is arranged between the air pump 6 and the flow meter, and the interface clamp 17 can play a role in connection sealing.

In some embodiments, the control panel 24 is provided with a handle 11, and the handle 11 is arranged to facilitate lifting the control panel 24 when the air path structure and the control device need to be observed or repaired at a later stage.

In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected 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.

It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A portable air tightness detector comprises a box body (22) and is characterized in that the box body is provided with an air path structure and a control device electrically connected with the air path structure, and the air path structure comprises an air pump (6) and a pressure measuring device (5); the air pump (6) is connected with the flowmeter and the third electromagnetic valve (19) in two paths through a pipeline (18); the flowmeter is sequentially connected with the electromagnetic valve and the test interface (13) through a pipeline (18); the third electromagnetic valve (19) is connected with the test interface (13); the pressure measuring device (5) is connected with the pressure measuring interface (12) through a pipeline (18).

2. The portable instrument according to claim 1, characterized in that the flowmeter comprises a first flowmeter (7) and a second flowmeter (8); the electromagnetic valves comprise a first electromagnetic valve (9) and a second electromagnetic valve (10); the air pump (6), the first flowmeter (7), the first electromagnetic valve (9) and the test interface (13) are sequentially connected in series; the air pump (6), the second flowmeter (8), the second electromagnetic valve (10) and the test interface (13) are sequentially connected in series.

3. The portable gas tightness detector according to claim 2, characterized in that the first flow meter (7) and the second flow meter (8) have different ranges.

4. The portable air tightness detector according to claim 1, characterized in that the pressure measuring device (5) is a pressure sensor or a pointer pressure gauge.

5. The portable instrument according to claim 1, characterized in that an interface clamp (17) is provided between the air pump (6) and the flowmeter.

6. The portable gas tightness detector according to claim 1, characterized in that it further comprises a control panel on which the pressure measuring interface (12) and the test interface (13) are arranged.

7. The portable air tightness detector according to claim 1, further comprising a box cover (23) hinged to the box body (22), wherein the box cover (23) is symmetrically provided with a plurality of clamping pieces (25), and the test tube (20) and the pressure measuring tube (21) are both coiled and clamped on the clamping pieces (25).

8. Portable gas tightness detector according to claim 6, characterized in that said control means comprise a switching power supply (2), a relay board (4), a remote I/O module (3), said switching power supply (2) and said remote I/O module (3) being electrically connected to said relay board (4).

9. The portable air-tightness detector according to claim 8, characterized in that the control panel (24) further comprises a power switch (16), a USB interface (15), a display screen (14), a timing module; the power switch (16) is electrically connected with the switching power supply (2); the USB interface (15), the display screen (14) and the timing module are all electrically connected with the relay board (4).

10. The portable air-tightness detector according to claim 1, characterized in that the box body is provided with an inner frame (1), and the air passage structure and the control device are both arranged in the inner frame (1).