CN216132647U - Capacitance air tightness detection device - Google Patents
Capacitance air tightness detection device Download PDFInfo
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- CN216132647U CN216132647U CN202122454159.9U CN202122454159U CN216132647U CN 216132647 U CN216132647 U CN 216132647U CN 202122454159 U CN202122454159 U CN 202122454159U CN 216132647 U CN216132647 U CN 216132647U
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Abstract
The utility model discloses a capacitance airtightness detection device which comprises a base, a capacitance placing box, a middle partition plate, a communicating pipe, a differential pressure sensor, an installation frame, a guide rod, an electric telescopic cylinder, a gland and five valves. During detection, the capacitor placing box is filled with gas, then the two placing chambers in the capacitor placing box are communicated, the pressure of the capacitor placing box and the pressure of the capacitor placing box are consistent, then the communicating pipe between the capacitor placing box and the communicating pipe is closed, the capacitor with leakage gradually leaks, the pressure of the placing chamber where the capacitor is located is reduced, and finally the pressure difference value is reflected through the pressure difference sensor. The utility model solves the problem of air tightness detection of small-scale production or single capacitor, improves the detection precision, reduces the operation difficulty, simplifies the operation process and improves the detection efficiency.
Description
Technical Field
The utility model belongs to the technical field of capacitor air tightness detection, and particularly relates to a capacitor air tightness detection device.
Background
The capacitor airtightness inspection is an important process for capacitor production and is used for inspecting whether the sealing of the capacitor is qualified or not. The sealing is unqualified, the leakage phenomenon can be generated, and the service life of the capacitor is shortened, and even the circuit board is short-circuited and is ignited.
The existing detection devices are mainly classified into the following categories:
1. the detection device is time-consuming and labor-consuming, and the sealing defective products cannot be recycled;
2. the vacuum sealing box is used for placing a product to be tested in the vacuum box, vacuumizing and keeping for a certain time, and manually checking whether liquid leaks or not one by one to judge the air tightness of the capacitor, so that the device is low in working efficiency and easy to misjudge to influence a detection result;
3. the high-temperature oven is used for placing the to-be-detected product in the high-temperature oven, heating and preserving heat for a certain time, and manually checking whether liquid leaks or not one by one to judge the air tightness of the capacitor, so that the device is time-consuming, low in working efficiency, easy to misjudge and influence the detection result, and the original parts in the capacitor are easy to damage at high temperature, and the service life of the capacitor is influenced;
4. atmospheric pressure flowmeter seal pot, place the determinand of the same quantity and condenser standard respectively in two seal pots, to the input gas in the seal pot, whether the flow through flowmeter contrast determinand and condenser standard is unanimous judges the gas tightness of determinand, this kind of device has reduced intensity of labour, still need artifical judgement, gas content in every seal pot and the not good condenser of gas tightness is slightly different simultaneously, and the not good condenser sample of gas tightness generally all belongs to the microleakage state, so under the inconsistent condition of initial gas volume, the error can appear, cause leak hunting or wrong detection, influence the measuring accuracy.
Among the prior art, patent publication No. CN207622946U discloses a super capacitor gas tightness verifying attachment, which comprises a bracket, a housing, a chassis, first conveyer belt and controller, be equipped with the movable rod that is connected with the motor between support and the casing, the below of casing is equipped with first conveyer belt, and evenly arranged the chassis of several and casing adaptation on the first conveyer belt, the inside cavity that is of casing, be equipped with vacuometer and first manometer on the casing, the casing is connected with inflation equipment and vacuum pump respectively through the pipeline, the controller respectively with first conveyer belt, a motor, the vacuometer, first manometer and vacuum pump are connected.
Above-mentioned technical scheme has solved the problem that exists in the current condenser gas tightness detects to a certain extent, but the shortcoming is that this verifying attachment structure is comparatively complicated, need carry out two processes of evacuation and pressurization in the operation process, and it is comparatively inconvenient when production on a small scale or detect single electric capacity.
For the above reasons, it is desirable to design a capacitance airtightness detection apparatus that solves the above problems.
Disclosure of Invention
The utility model aims to provide a capacitor air tightness detection device, which solves the problem of air tightness detection of a single capacitor in small-scale production, improves detection precision, reduces operation difficulty, simplifies operation process and improves detection efficiency.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a capacitance airtightness detection device comprises a detection unit,
a base;
the capacitor placing box is fixedly connected to the base;
the middle clapboard is arranged in the capacitor placing box and divides the capacitor placing box into a first placing chamber and a second placing chamber which are not communicated with each other, the upper ends of the first placing chamber and the second placing chamber are both open, wherein the first placing chamber is used for placing a capacitor to be tested, and the second placing chamber is empty (the capacitor and other objects are not placed);
the two ends of the communicating pipe are respectively communicated with the first placing chamber and the second placing chamber, and a third valve is arranged on the communicating pipe;
one end of the mounting rack is connected with the base, and the other end of the mounting rack extends to the upper parts of the first placing chamber and the second placing chamber;
the linear motion mechanism is fixedly connected to the mounting frame;
the gland is connected to the tail end of the linear motion mechanism, and when the linear motion mechanism acts, the gland seals openings in the upper ends of the first placing chamber and the second placing chamber;
the pressure sensor is arranged in the first placing chamber;
the two ends of the differential pressure testing pipeline are respectively communicated with the first placing chamber and the second placing chamber, a fourth valve and a fifth valve are arranged on the differential pressure testing pipeline, and a differential pressure sensor is arranged on the differential pressure testing pipeline and between the fourth valve and the fifth valve;
one end of the first pressurizing pipeline is communicated with the first placing chamber, the other end of the first pressurizing pipeline is communicated with the air source, and a first valve is arranged on the first pressurizing pipeline;
and one end of the second pressurizing pipeline is communicated with the second placing chamber, the other end of the second pressurizing pipeline is communicated with the air source, and a second valve is arranged on the second pressurizing pipeline.
Furthermore, electric capacity gas tightness detection device still includes the guide bar, the one end of guide bar is connected on the gland, and the other end sliding connection of guide bar is on the mounting bracket.
Furthermore, two guide holes are formed in the mounting frame, and one ends of the two guide rods are respectively connected to the two guide holes in a sliding mode.
Further, the first placing chamber and the second placing chamber are two chambers with equal volumes.
Further, the linear motion mechanism is an electric telescopic cylinder.
Further, the air source is an air compressor.
Further, the capacitance air tightness detection device further comprises a display screen, and the display screen is used for outputting numerical values of the pressure sensor and the differential pressure sensor.
Further, the first valve, the second valve, the third valve, the fourth valve and the fifth valve are all electromagnetic valves.
Further, the capacitance air tightness detection device further comprises a controller, and the controller is electrically connected with the first valve, the second valve, the third valve, the fourth valve, the fifth valve, the pressure sensor and the differential pressure sensor respectively.
Compared with the prior art, the capacitance airtightness detection device provided by the utility model has the advantages that the judgment on the airtightness of the capacitor is realized in a mode of comparing the air pressure difference by pressurizing the capacitor product to be detected and testing and recording the air pressure value data, the use method of the detection device is simple and effective when small-scale production or detection of a single capacitor is carried out, the capacitor products with different sizes are judged according to different pressure difference values, the misjudgment caused by individual difference of the capacitor is avoided, and the production efficiency and the test precision are effectively improved.
Drawings
FIG. 1 is a schematic view of a capacitance air tightness detecting device according to the present invention;
in the figure, 1, a base; 2. a first placing chamber; 3. a second holding chamber; 4. a middle partition plate; 5. a communicating pipe; 6. a mounting frame; 7. a linear motion mechanism; 8. a guide bar; 9. a gland; 10. a pressure sensor; 11. a fourth valve; 12. a fifth valve; 13. a differential pressure sensor; 14. a first valve; 15. a second valve; 16. a third valve; 17. an air compressor; 18. a display screen; 19. mounting a box; 20. and (6) control keys.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments, but it should not be understood that the scope of the subject matter of the present invention is limited to the following embodiments, and various modifications, substitutions and alterations made based on the common technical knowledge and conventional means in the art without departing from the technical idea of the present invention are included in the scope of the present invention.
As shown in fig. 1, the embodiment discloses a capacitance airtightness detection device, which comprises a base 1, the base 1 serves as the installation foundation of a whole detection device, an installation frame 6 is installed on the base 1, a capacitance placing box is fixed below the installation frame 6 on the base 1, the upper end of the capacitance placing box is open, the capacitance placing box serves as the detection area of a capacitor to be detected, the interior of the capacitance placing box is divided into two independent spaces, which are not communicated, and the upper end of the capacitance placing box is open by a middle partition plate 4, and the space is marked as a first placing chamber 2 and a second placing chamber 3. The shape of mounting bracket 6 is confirmed according to the overall dimension that the case was placed to electric capacity, and in principle the one end of mounting bracket 6 can extend to electric capacity place the case open upper end can. It has two guiding holes to open on the mounting bracket 6, sliding connection has two guide bars 8 in the guiding hole, the lower extreme of guide bar 8 is connected with gland 9, still install the electronic telescopic cylinder as linear motion mechanism 7 on the mounting bracket 6, electronic telescopic cylinder lower extreme is connected with gland 9, thereby can drive gland 9 and be linear motion, two guide bars 8 are located electronic telescopic cylinder both sides respectively, ensure that gland 9 can be accurate cover and place case upper end openness department and not take place to rock at electric capacity, place first placing chamber 2 and second placing chamber 3 sealed.
In this embodiment, a control module and a display module of the detection device are integrated by a mounting box 19, a controller in the control module is electrically connected with five valves (a first valve 14, a second valve 15, a third valve 16, a fourth valve 11 and a fifth valve 12 are all electromagnetic valves), an air compressor 17 is electrically connected with the controller, a pressure sensor 10 and a differential pressure sensor 13 are electrically connected with the controller, and the controller is further connected with a memory for storing detected pressure and differential pressure results. Control key 20 among the control module is installed on the surface of mounting box 19, and control key 20 includes the shift knob of five valves, and the start-stop button of air compressor machine 17, the start-stop button of electronic telescopic cylinder. The surface of the mounting box 19 is also provided with a display screen 18 for displaying the values of the pressure sensor 10 and the differential pressure sensor 13 and whether the detection result is qualified.
The basic steps of the device for detecting the air tightness are as follows:
1. lifting a gland 9 by an electric telescopic cylinder, placing a single or a small quantity of capacitors to be tested in a first placing chamber 2 from an opening at the upper end of a capacitor placing box (when a plurality of capacitors are arranged, the capacitors are placed in a dispersed manner, and intervals are left between every two capacitors without being tightly attached), lowering the gland 9 by the electric telescopic cylinder, sealing the first placing chamber 2 and a second placing chamber 3, then starting an air compressor 17, simultaneously opening a first valve 14 (electromagnetic valve) and a second valve 15 (electromagnetic valve), closing a third valve 16 (electromagnetic valve), a fourth valve 11 (electromagnetic valve) and a fifth valve 12 (electromagnetic valve), inflating the first placing chamber 2 and the second placing chamber 3 for 5-10 seconds, adjusting time according to capacitor products with different sizes, ensuring that the air pressure in the two placing chambers of the first placing chamber 2 and the second placing chamber 3 reaches a preset value, the pressure sensor 10 will detect the air pressure value of the first placing chamber 2.
2. And (3) closing the first valve 14 (electromagnetic valve) and the second valve 15 (electromagnetic valve) to enable the first placing chamber 2 and the second placing chamber 3 to stand for 1-3 seconds, wherein the air pressure is slightly reduced due to the existence of the test capacitor in the first placing chamber 2.
3. Opening a third valve 16 (electromagnetic valve) on the communicating pipe 5 for 1-3 seconds, and allowing gas in the second placing chamber 3 to enter the first placing chamber 2, so that the air pressure values of the two placing chambers are kept consistent, and because the communication time of the first placing chamber 2 and the second placing chamber 3 is very short, even if the capacitor in the first placing chamber 2 leaks, the air pressure consistency of the two placing chambers cannot be influenced, the default capacitor is only in a micro-leakage state, and if the capacitor is in an obvious leakage state, the capacitor leaks when being inflated in the step 1, and obvious capacitor cracking and liquid leakage sound are heard.
4. And (3) closing the third valve 16 (electromagnetic valve) on the communicating pipe 5, standing for 10-60 seconds, adjusting the standing time according to the size of the capacitor and the number of the capacitors, wherein the standing aims to ensure that the leaked capacitor fully enters air, so that the air pressure value of the first placing chamber 2 is obviously reduced, and if the standing time is short, the detection result is wrong because the air pressure value is not obviously reduced.
5. Opening a fourth valve 11 (electromagnetic valve) and a fifth valve 12 (electromagnetic valve) on the differential pressure test pipeline, if the capacitor to be tested has poor sealing, the air pressure of the first placing chamber 2 can be obviously reduced, at the moment, because the first placing chamber 2 and the second placing chamber 3 are communicated, the air pressure of the second placing chamber 3 can enter the first placing chamber 2, so that the differential pressure sensor 13 can detect that an air pressure difference value exists, transmitting the air pressure difference value to the controller, displaying the pressure difference value in the display screen 18, and simultaneously prompting that the product has poor air tightness; if the capacitor to be tested is well sealed, the air pressure value of the first placing chamber 2 is unchanged or the change is smaller than the testing precision of the differential pressure sensor 13, namely the air pressures of the first placing chamber 2 and the second placing chamber 3 are the same, the differential pressure sensor 13 cannot detect that the air pressure difference exists or the measured air pressure difference is smaller than the testing precision, the air pressure difference is transmitted to the controller, the pressure difference value is displayed to be zero in the display screen 18, and meanwhile, the air tightness of the product is prompted to be qualified.
6. And (3) starting the linear motion mechanism 7 (electric telescopic cylinder) to lift the gland 9, taking out the capacitor to be tested from the first placing chamber 2, and selecting the capacitor with unqualified display if the surface of the capacitor has leakage visible to naked eyes.
It should be apparent that the above-described embodiments are merely one embodiment of the present invention, and 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, fall within the protection scope of the present invention.
Claims (9)
1. The utility model provides a capacitance gas tightness detection device which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
a base (1);
the capacitor placing box is fixedly connected to the base (1);
the middle partition plate (4) is arranged in the capacitor placing box and divides the capacitor placing box into a first placing chamber (2) and a second placing chamber (3) which are not communicated with each other, the upper ends of the first placing chamber (2) and the second placing chamber (3) are both open, the first placing chamber (2) is used for placing a capacitor to be tested, and the second placing chamber (3) is empty;
the two ends of the communicating pipe (5) are respectively communicated with the first placing chamber (2) and the second placing chamber (3), and a third valve (16) is arranged on the communicating pipe (5);
one end of the mounting rack (6) is connected with the base (1), and the other end of the mounting rack (6) extends to the upper parts of the first placing chamber (2) and the second placing chamber (3);
the linear motion mechanism (7), the said linear motion mechanism (7) is fixedly connected to mounting bracket (6);
the gland (9), the said gland (9) is connected to the end of the linear motion mechanism (7), and when the linear motion mechanism (7) moves, the gland (9) closes the open mouth of the upper end of the first placing chamber (2) and the second placing chamber (3);
a pressure sensor (10), said pressure sensor (10) being placed inside the first placing chamber (2);
the pressure difference testing pipeline is provided with a fourth valve (11) and a fifth valve (12), and a pressure difference sensor (13) is arranged on the pressure difference testing pipeline and between the fourth valve (11) and the fifth valve (12);
one end of the first pressurizing pipeline is communicated with the first placing chamber (2), the other end of the first pressurizing pipeline is communicated with an air source, and a first valve (14) is arranged on the first pressurizing pipeline;
and one end of the second pressurizing pipeline is communicated with the second placing chamber (3), the other end of the second pressurizing pipeline is communicated with an air source, and a second valve (15) is arranged on the second pressurizing pipeline.
2. The capacitance air tightness detection device according to claim 1, characterized in that: still include guide bar (8), the one end of guide bar (8) is connected on gland (9), and the other end sliding connection of guide bar (8) is on mounting bracket (6).
3. A capacitance air-tightness detection device according to claim 2, characterized in that: two guide holes are formed in the mounting frame (6), and one ends of the two guide rods (8) are respectively connected into the two guide holes in a sliding mode.
4. The capacitance air tightness detection device according to claim 1, characterized in that: the first placing chamber (2) and the second placing chamber (3) are two chambers with equal volumes.
5. The capacitance air tightness detection device according to claim 1, characterized in that: the linear motion mechanism (7) is an electric telescopic cylinder.
6. The capacitance air tightness detection device according to claim 1, characterized in that: the air source is an air compressor (17).
7. The capacitance air tightness detection device according to claim 1, characterized in that: the pressure sensor further comprises a display screen (18), and the display screen (18) is used for outputting numerical values of the pressure sensor (10) and the differential pressure sensor (13).
8. The capacitance air tightness detection device according to claim 1, characterized in that: the first valve (14), the second valve (15), the third valve (16), the fourth valve (11) and the fifth valve (12) are all electromagnetic valves.
9. The capacitance air tightness detection device according to claim 8, characterized in that: the pressure sensor is characterized by further comprising a controller, wherein the controller is electrically connected with the first valve (14), the second valve (15), the third valve (16), the fourth valve (11), the fifth valve (12), the pressure sensor (10) and the differential pressure sensor (13) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122454159.9U CN216132647U (en) | 2021-10-12 | 2021-10-12 | Capacitance air tightness detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122454159.9U CN216132647U (en) | 2021-10-12 | 2021-10-12 | Capacitance air tightness detection device |
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| CN216132647U true CN216132647U (en) | 2022-03-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116929667A (en) * | 2023-09-14 | 2023-10-24 | 扬州雄鸡电池有限公司 | Bidirectional nondestructive air tightness detection device and method for battery pack |
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2021
- 2021-10-12 CN CN202122454159.9U patent/CN216132647U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116929667A (en) * | 2023-09-14 | 2023-10-24 | 扬州雄鸡电池有限公司 | Bidirectional nondestructive air tightness detection device and method for battery pack |
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