KR101416620B1 - Leakage test apparatus using ultrasonic and air pressure - Google Patents

Abstract

The present invention relates to a leakage sensing apparatus using ultrasonic waves and air pressure and, more particularly, to an apparatus for an air leakage test of various objects to be tested for leakage. The apparatus can easily and simply determine leakage from a product using air and ultrasonic waves, record the determination results, allow the leakage to be checked from the outside, and perform a leakage test in a process prior to the assembly of the product because it is simple and convenient to use.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a leak detection apparatus using ultrasound and pneumatic pressure,

The present invention relates to a leak detection device using ultrasonic waves and pneumatic pressure, which enables easy and simple reliable testing in the previous individual process step, not in the stage of the assembly finished body, such as the rupture of the test object and pinholes.

In the case of a piping material made of a metal material, a small-diameter piping material having a small diameter can usually be manufactured by the same method as a drawing, but a large-diameter piping material having a relatively large diameter is produced by bending a metal plate into a circular shape and finally welding to form a closed piping material do.

In addition, the welding process is used not only for the piping as described above but also for various products.

Such welding is a very efficient joining method, but it has a great influence on the welding quality due to the working skill of the welder and other working environments. Various types of welding defects may exist and the welding site is fundamentally vulnerable to shock, so careful attention is required when carrying or storing.

In some products, there is a need to prevent dust and foreign matter from entering into the inside or water into the internal substrate, and since the piping material is also used to transport the fluid, it should not leak any fluid such as water, oil or other gases do.

If there is a defect in the welded portion and the jointed portion of the product or pipe requiring sealing / sealing as described above, leakage of the fluid causes many problems. Therefore, products and piping materials that are essentially manufactured should be tested for leaks.

Typical leak tests include water pressure tests or barometric pressure tests using helium or other gases. However, in the case of the conventional leakage test, since the cost of using helium gas is high and the scale is large, the product was always manufactured at the completion stage, As the test progresses, there has been a problem in that, when a fault occurs, the cost of disassembling must be added or discarded.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to easily and easily confirm whether air leaks from various objects (devices, objects, pipes, etc.) And the pneumatic pressure are applied together to check whether there is a leak or not. At the same time, the leakage test process for the finished product is simplified by the configuration of the equipment, and the ultrasound And a leakage detection device using air pressure.

Other objects and advantages of the present invention will be described hereinafter and will be understood by the embodiments of the present invention. Further, objects and advantages of the present invention can be realized by the means and the combination shown in the claims.

In order to solve the above-mentioned problems, the present invention provides a leak check chamber (10) having an inlet (11) capable of being opened and closed, (10); A pneumatic injection device (20) for injecting pneumatic pressure into the leak check object (P); An ultrasonic detecting and sending device 30 for detecting a leak sound of pneumatic pressure counting from the leak check target object P by being installed in the leakage check chamber part 10 in proximity to the leakage check target object P; An ultrasonic receiver 40 installed outside the leakage check chamber 10 to receive a detection signal from the ultrasonic wave sensing and transmitting device 30; A confirmation device 50 connected to the ultrasonic receiving device 40 for allowing the outside to check the breakage of the leakage confirmation object P in the leakage confirmation chamber part 10 and whether the leakage is poor or not; And a control unit.

As described above, according to the present invention, it is possible to perform the leak detection process performed in the assembly completion process of a product before the assembly completion process, and fix the individual components of the product individually, It is effective.

Further, since the present invention uses pneumatic pressure for the air leakage test, it has a cost reduction effect as compared with the conventional helium tester.

In addition, the present invention not only enables a simple and easy detection method, but also enables rapid and accurate detection, and is effective for improving productivity of a product.

Further, the present invention has the effect of shortening the manufacturing time of the product production and shortening the manufacturing cost.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of an embodiment of a leakage detection apparatus using ultrasonic waves and pneumatic pressure according to the present invention; FIG.
2 is a diagram illustrating an embodiment of a leakage detection apparatus using ultrasonic waves and pneumatic pressure according to the present invention.

Before describing in detail several embodiments of the invention, it will be appreciated that the application is not limited to the details of construction and arrangement of components set forth in the following detailed description or illustrated in the drawings. The invention may be embodied and carried out in other embodiments and carried out in various ways. It should also be noted that the device or element orientation (e.g., "front,""back,""up,""down,""top,""bottom, Expressions and predicates used herein for terms such as "left,"" right, "" lateral, " and the like are used merely to simplify the description of the present invention, Or that the element has to have a particular orientation.

The present invention has the following features in order to achieve the above object.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

Accordingly, in one embodiment of the present invention,

A leakage confirmation chamber portion 10 formed with an inlet portion 11 capable of opening and closing and fixed to a seating space A provided with a leakage check target object P; A pneumatic injection device (20) for injecting pneumatic pressure into the leak check object (P); An ultrasonic detecting and sending device 30 for detecting a leak sound of pneumatic pressure counting from the leak check target object P by being installed in the leakage check chamber part 10 in proximity to the leakage check target object P; An ultrasonic receiver 40 installed outside the leakage check chamber 10 to receive a detection signal from the ultrasonic wave sensing and transmitting device 30; A confirmation device 50 connected to the ultrasonic receiving device 40 for allowing the outside to check the breakage of the leakage confirmation object P in the leakage confirmation chamber part 10 and whether the leakage is poor or not; And a control unit.

In addition, the confirmation device 50 is connected to the ultrasonic receiver 40 to check whether a detection signal is detected. If the detection signal is not confirmed, A control unit (51) A warning unit 52 connected to the control unit 51 to receive an alarm and a buzzer when the control unit 51 receives the detection signal; A recording unit 53 connected to the control unit 51 to store and record the detection signal of the multiple leakage detection object P recognized by the control unit 51 as data; .

Also, the pneumatic pressure is 7 to 9 bar, and the ultrasonic sensing and transmitting device 30 uses a frequency of 20 kHz.

Hereinafter, a leakage sensing device using ultrasonic waves and pneumatic pressure according to a preferred embodiment of the present invention will be described in detail with reference to FIG. 1 or FIG.

As shown in the drawing, the leakage detection device using ultrasonic waves and pneumatic pressure according to the present invention includes a leakage confirmation chamber 10, a pneumatic injection device 20, an ultrasonic sensing and transmitting device 30, an ultrasonic receiving device 40, (50).

The leakage confirmation chamber unit 10 is a place where a leak check target object P, which is a target to check for leakage, is installed and fixed. The leakage check chamber unit 10 is formed with an inlet 11 that can be opened and closed in order to open or close the inside of the leak check chamber unit 10. Of course, the position of the inlet 11 may be formed at an upper portion of the leakage confirmation chamber portion 10 and at a position desired by the user.

The leakage confirmation chamber unit 10 is formed with a seating space A to form an empty space therein so that the leakage confirmation object unit P for confirming leakage is fixedly installed .

In order to float the leak detecting object P, various kinds of fixing means for fixing the leak detecting object P are provided in the seating space A of the leakage confirming chamber portion 10, A belt or the like that surrounds the outer periphery of the belt) may be provided.

The pneumatic injection device 20 is used for a leakage confirmation object P fixedly seated in the leakage confirmation chamber portion 10 described above and is provided with a separate pneumatic means (ex: pneumatic pump, pneumatic hose, pneumatic tank, Etc.) to a leakage check target object (P).

Thus, if there is a defect in a portion of the leak-checking object P to be sealed or a portion of the leakage-checking object P to be reliably connected by welding or the like, by injecting air into the leakage-checking object P, The injected air will come out from the leakage portion.

Of course, it is a matter of course that a through hole through which the hose of the pneumatic injection device 20 can be introduced is formed at the outer periphery of the leakage confirmation chamber part 10, and even in the case of the leakage confirmation object P, If there is an inflow hole in which the air of such a hose can be introduced, the inflow hole can be used after it is formed beforehand.

In addition, in the present invention, the air pressure of the pneumatic injection device 20 is 7 to 9 bar, but it may be injected with a larger air pressure depending on the user.

The ultrasonic sensing and transmitting device 30 and the ultrasonic receiving device 40 are intended to check the air leaked from the leakage confirmation target object P and the ultrasonic sensing and transmitting device 30 is fixedly installed And the ultrasonic wave receiving device 40 is provided outside the leakage check target P.

At this time, the ultrasonic sensing and transmitting device 30 is fixedly installed in the leakage confirmation chamber unit 10, and is fixed in the vicinity of the leakage confirmation object P fixed in the interior thereof, (C) to be confirmed.

Thereby, the leak check target body P is installed in the leakage check chamber portion 10 and the chamber is closed with the air introduced into the leak check target body P through the pneumatic injection device 20 after the inlet portion 11 is closed If there is a problem in the leakage confirmation object (P) due to rupture and pinhole, or a leakage confirmation part (ex: welding part where a plurality of pipes are connected) Air leaking out of air is generated in the leakage confirmation chamber unit 10, so that the leakage sound leaked when the air leakage occurs is detected by the ultrasonic wave detection and transmission apparatus 30.

That is, when the ultrasonic sensing and transmitting device 30 detects a leakage sound, the sensing signal is transmitted to the ultrasonic receiving device 40. (At this time, the ultrasonic detection and transmission apparatus 30 used is a frequency of 20 KHz, but this is also a changeable part.)

In addition, when no leakage sound is detected by the ultrasonic sensing and transmitting device 30, the ultrasonic sensing and transmitting device 30 may not transmit any signal to the ultrasonic receiving device 40. In contrast, It may be preset to transmit a signal different from that when a leak sound is detected to the ultrasonic receiving apparatus 40 when the user does not detect it until a preset time after starting the test.

The confirmation device 50 is connected to the ultrasonic receiving device 40 described above so that the user can check whether the leakage confirmation target object P is damaged or leaked.

The confirmation device 50 for this purpose includes a control unit 51, a warning unit 52, and a recording unit 53.

The controller 51 is electrically connected to the ultrasonic receiver 40 to check whether the ultrasonic signal is received from the ultrasonic receiver 40. When it is confirmed that the ultrasound receiver 40 has received the monitoring signal, the microcomputer 50 allows the user to report and store the data through the warning unit 52 and the recording unit 53, which will be described later, When the air pressure is injected into the leakage check target object P from the air injection device 20 and then the detection signal is not received from the ultrasonic receiver 40 for a preset time set by the user, 52 and the recording unit 53 to confirm that the product status of the leak check target object P is normal and to store such data.

At this time, if the user does not receive the detection signal, the controller 51 determines whether the user determines that the product is a normal product which does not leak when the user does not receive the detection signal for a certain period of time. ex: 3 seconds, 5 seconds, etc.). As a result, it is possible to determine a case where the detection signal is not received during the preset time (waiting time) as a normal product.

The alarm unit 52 is electrically connected to the control unit 51 and uses an alarm and an alarm. When the alarm unit 52 receives a detection signal through the control unit 51 and it is confirmed that the product is a defective product, An alarm is activated and a green alarm is sounded when the goods are confirmed as regular goods through the control unit 51 so that the sound of the alarm sounds different from the sound of the buzzer when the alarm is not operated.

The recording unit 53 is electrically connected to the control unit 51 and operates simultaneously with the alarm unit 52. When the leakage confirmation target object P is identified as a defective product or when it is confirmed as a regular product, And record the result. This means that the PC can be used (such as test time, number of tested leaky object (P) tested, site tested)

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various changes and modifications may be made without departing from the scope of the appended claims.

10: Leak check chamber part 11: Inflow part
20: Pneumatic injection device 30: Ultrasonic sensing and transmitting device
40: Ultrasound receiving device 50: Identification device
51: control section 52: warning section
53:

Claims (3)

A leakage confirmation chamber portion 10 formed with an inlet portion 11 capable of opening and closing and fixed to a seating space A provided with a leakage check target object P;
A pneumatic injection device (20) for injecting pneumatic pressure into the leak check object (P);
An ultrasonic detecting and sending device 30 for detecting a leak sound of pneumatic pressure counting from the leak check target object P by being installed in the leakage check chamber part 10 in proximity to the leakage check target object P;
An ultrasonic receiver 40 installed outside the leakage check chamber 10 to receive a detection signal from the ultrasonic wave sensing and transmitting device 30;
And a confirmation device (50) connected to the ultrasonic receiving device (40) for allowing the outside to check whether the leakage confirmation object (P) is damaged or leaked in the leakage confirmation chamber part (10)
The checking device 50 is connected to the ultrasonic receiving device 40 to check whether a sensing signal is detected. If the sensing signal is not confirmed, An alarm unit 52 connected to the control unit 51 to receive an alarm signal and an alarm signal when the control unit 51 receives the detection signal and a control unit 51 connected to the control unit 51, And a recording unit 53 for storing, as data, the presence or absence of a detection signal of the multiple leak check target object P recognized by the sensor 53,
The pneumatic pressure is 7 to 9 bar, the ultrasonic detection and transmission device 30 uses a frequency of 20 kHz,
A fixing means composed of a belt surrounded by the outer periphery of the leakage check target body P is provided in the seating space A of the leakage confirmation chamber unit 10 in order to fix the leakage check target body P,
The ultrasound detecting and sending device 30 is fixedly installed in the leakage confirmation chamber unit 10 and is fixed in the vicinity of the leak confirmation object P fixed in the interior thereof, To be close to the vicinity of the confirmation region (C)
If no leakage sound is detected in the ultrasonic wave sensing and transmitting device 30, the ultrasonic wave sensing and transmitting device 30 does not transmit any signal to the ultrasonic wave receiving device 40, When the user does not detect a predetermined time, a signal different from that when the leakage sound is detected is preset to be transmitted to the ultrasonic receiving apparatus 40,
If the user does not receive the detection signal for a certain period of time and fails to receive the detection signal, the controller 51 determines whether the user determines that the product is a non-leaky normal product by varying the waiting time through the control unit 51 in advance And,
The alarm unit 52 uses an alarm and an alarm to receive a detection signal through the control unit 51. When the alarm unit 52 confirms that it is a defective product, the alarm unit 52 sounds a red alarm and operates the alarm unit. If it is confirmed as a regular product, the green alarm will sound and the alarm will not sound, or a different sound will be emitted from the sound of the defective product,
The recording unit 53 is operated simultaneously with the warning unit 52. When the leakage confirmation target object P is confirmed as a defective product or when it is confirmed as a regular product, Number, and a result of a test that has been tested.
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