Air leakage detection device of vacuum cavity

Abstract

The utility model provides an air leakage detection device for a vacuum cavity. The air leakage detection device comprises a sound pickup head and a sound insulation cover, a sound conduction pipe is inserted into the sound insulation cover, and the sound conduction pipe is connected with the sound pickup head through a sound conduction hose; a sound sensor and a signal amplifier are installed in the sound insulation cover, and the sound sensor directly faces the sound conduction pipe and is used for collecting sound signals in the sound conduction pipe; the signal amplifier is electrically connected with the sound sensor and is used for amplifying a sound signal acquired by the sound sensor; and a display screen is mounted on the soundproof cover, is electrically connected with the signal amplifier and is used for displaying the sound signal amplified by the signal amplifier. The vacuum cavity leak detection device can quickly perform vacuum cavity leak detection, can quickly and sensitively position tiny leakage of a vacuum system, and is convenient for vacuum cavity leak detection.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum cavity leakage detection, in particular to a vacuum cavity gas leakage detection device. Background Art

[0002] The mechanical connection between the vacuum chamber and the vacuum chamber sealing cover often causes air leakage due to gaps. During vacuum system maintenance and troubleshooting, leak detection of the vacuum chamber and the vacuum chamber sealing cover is a key step in ensuring vacuum system performance.

[0003] Traditional vacuum chamber leak detection methods, such as helium leak detection or pressure change testing, are costly and expensive, require specialized equipment, and take a long time to detect leaks. Existing vacuum chamber leak detection instruments cannot quickly detect leaks in vacuum chambers, making vacuum chamber leak detection inconvenient. Utility Model Content

[0004] The utility model provides a vacuum cavity gas leakage detection device to solve the technical problems that existing vacuum cavity gas leakage detection instruments cannot perform vacuum cavity gas leakage detection quickly and the vacuum cavity gas leakage detection is not convenient enough.

[0005] One aspect of the present invention is to provide a gas leakage detection device for a vacuum cavity, the gas leakage detection device comprising a sound pickup head and a sound insulation cover;

[0006] A sound conducting tube is inserted into the soundproof cover, and the sound conducting tube is connected to the sound pickup head via a sound conducting hose;

[0007] A sound sensor and a signal amplifier are installed in the soundproof cover, and the sound sensor is directly facing the sound conducting tube and is used to collect the sound signal in the sound conducting tube;

[0008] The signal amplifier is electrically connected to the sound sensor and is used to amplify the sound signal collected by the sound sensor;

[0009] A display screen is installed on the soundproof cover, and the display screen is electrically connected to the signal amplifier and is used for displaying the sound signal amplified by the signal amplifier.

[0010] In a preferred embodiment, a sound insulation cover is installed on the sound insulation cover, and the display screen is installed on the sound insulation cover.

[0011] In a preferred embodiment, a first mounting slot is provided in the soundproof cover;

[0012] The sound sensor and the signal amplifier are fixed in the first mounting groove.

[0013] In a preferred embodiment, a second mounting slot is further provided in the soundproof cover, and a power supply battery is fixed in the second mounting slot;

[0014] The power supply battery is connected to the sound sensor through a power supply line, the power supply battery is connected to the signal amplifier through a power supply line, and the power supply battery is connected to the display screen through a power supply line.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This utility model proposes a vacuum chamber air leak detection device. A sound pickup head picks up the sound of air leaks at the mechanical connection between the vacuum chamber and the vacuum chamber sealing cover. The sound is then transmitted to a sound transmission tube via a sound transmission hose. A sound sensor, facing the sound transmission tube, collects the sound signal within the tube. A signal amplifier amplifies the weak sound signal collected by the sound sensor. Finally, a display screen displays the amplified sound signal, thereby locating the air leak at the mechanical connection between the vacuum chamber and the vacuum chamber sealing cover.

[0017] The utility model proposes a gas leakage detection device for a vacuum cavity. A sound conduction tube is inserted into a sound insulation cover, and a sound sensor is installed in the sound insulation cover. The sound insulation cover isolates external environmental noise, thereby reducing interference of the sound sensor by external noise.

[0018] The utility model provides a vacuum cavity gas leakage detection device, which can quickly perform vacuum cavity gas leakage detection. In situations where rapid vacuum cavity gas leakage detection is required, the vacuum cavity gas leakage detection is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0020] Figure 1 The utility model is a structural schematic diagram of a vacuum cavity gas leakage detection device.

[0021] Figure 2 The utility model is a structural schematic diagram of a vacuum cavity air leakage detection device with a sound insulation cover removed.

[0022] Figure 3 It is a structural schematic diagram of the sound insulation cover of the utility model. DETAILED DESCRIPTION

[0023] In order to make the above and other features and advantages of the present invention more clear, the present invention is further described below with reference to the accompanying drawings. It should be understood that the specific embodiments given herein are for the purpose of explaining to those skilled in the art and are only exemplary and not restrictive.

[0024] Combine Figures 1 to 3 According to an embodiment of the present invention, a vacuum cavity air leakage detection device is provided, comprising a sound pickup head 1, a sound insulation cover 3 and a sound conducting hose 2.

[0025] A sound-conducting tube 4 is inserted into the soundproofing enclosure 3. Specifically, the soundproofing enclosure 3 defines a through-hole extending therethrough. The sound-conducting tube 4 is inserted into the through-hole, with the outer surface of the sound-conducting tube 4 closely fitting against the inner surface of the through-hole. The sound-conducting tube 4 is connected to the sound pickup head 1 via a sound-conducting hose 2.

[0026] like Figure 2 and Figure 3 As shown, a sound sensor 6 and a signal amplifier 5 are installed in the soundproof cover 3. The sound sensor 6 is directly opposite the sound conducting tube 4 and is used to collect the sound signal in the sound conducting tube 4. The signal amplifier 5 is electrically connected to the sound sensor 6 and is used to amplify the sound signal collected by the sound sensor 6.

[0027] like Figure 1 As shown, according to an embodiment of the present invention, a display screen 302 is installed on the soundproof cover 3 , and the display screen 302 is electrically connected to the signal amplifier 5 for displaying the sound signal amplified by the signal amplifier 5 .

[0028] Specifically, a soundproof cover 301 is installed on the soundproof cover 3, and a display screen 302 is installed on the soundproof cover 301. The display screen 302 is electrically connected to the signal amplifier 5 and is used to display the sound signal amplified by the signal amplifier 5.

[0029] Furthermore, a first mounting groove 303 and a second mounting groove 304 are provided in the soundproof cover 3 . The sound sensor 6 and the signal amplifier 5 are fixed in the first mounting groove 303 .

[0030] The power supply battery 7 is fixed in the second mounting groove 304. The power supply battery 7 is connected to the sound sensor 6 through a power supply line, the power supply battery 7 is connected to the signal amplifier 5 through a power supply line, and the power supply battery 7 is connected to the display screen 302 through a power supply line.

[0031] The power supply battery 7 supplies power to the sound sensor 6 , the signal amplifier 5 and the display screen 302 .

[0032] The following describes the use of the vacuum cavity gas leakage detection device provided by the present invention.

[0033] Start the vacuum system and gradually make the inside of the vacuum cavity of the vacuum system reach a vacuum state.

[0034] The operator holds the soundproof cover 3 in one hand and the sound pickup head 1 in the other hand, and sticks the sound pickup head 1 to the mechanical connection between the vacuum cavity and the sealing cover of the vacuum cavity of the vacuum system.

[0035] Then, slowly move the sound pickup head 1 around the mechanical connection between the vacuum chamber and the vacuum chamber sealing cover to pick up the sound at the mechanical connection between the vacuum chamber and the vacuum chamber sealing cover. During the movement of the sound pickup head 1, observe the decibel level of the sound signal displayed on the display screen 302. If the decibel level of the sound signal suddenly jumps on the display screen 302 (the decibel level of the sound signal suddenly increases), there may be a leak at the mechanical connection between the vacuum chamber and the vacuum chamber sealing cover. Mark the mechanical connection between the vacuum chamber and the vacuum chamber sealing cover.

[0036] The present invention picks up the sound of air leakage at the mechanical connection between the vacuum cavity and the vacuum cavity sealing cover through the sound pickup head 1, and transmits it to the sound conduction tube 4 through the sound conduction hose 2. The sound sensor 6 collects the sound signal in the sound conduction tube 4, and amplifies the weak sound signal collected by the sound sensor 6 through the signal amplifier 5. Finally, the sound signal amplified by the signal amplifier 5 is displayed on the display screen 302, thereby determining the location of the air leakage at the mechanical connection between the vacuum cavity and the vacuum cavity sealing cover. During the air leakage detection process, the soundproof cover 3 isolates the external environmental noise and reduces the interference of the external noise on the sound sensor 6. The present invention can quickly perform vacuum cavity leakage detection, can quickly and sensitively locate small leaks in the vacuum system, and is convenient for vacuum cavity leakage detection.

[0037] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A vacuum chamber gas leakage detection device, characterized in that: The air leakage detection device includes a sound pickup head and a sound insulation cover; A sound conducting tube is inserted into the soundproof cover, and the sound conducting tube is connected to the sound pickup head via a sound conducting hose; A sound sensor and a signal amplifier are installed in the soundproof cover, and the sound sensor is directly facing the sound conducting tube and is used to collect the sound signal in the sound conducting tube; The signal amplifier is electrically connected to the sound sensor and is used to amplify the sound signal collected by the sound sensor; A display screen is installed on the soundproof cover, and the display screen is electrically connected to the signal amplifier and is used for displaying the sound signal amplified by the signal amplifier.

2. The gas leakage detection device according to claim 1, characterized in that: A sound insulation cover is installed on the sound insulation cover, and the display screen is installed on the sound insulation cover.

3. The gas leakage detection device according to claim 1, characterized in that: A first mounting groove is provided in the soundproof cover; The sound sensor and the signal amplifier are fixed in the first mounting groove.

4. The gas leakage detection device according to claim 1, wherein: A second mounting slot is further provided in the soundproof cover, and a power supply battery is fixed in the second mounting slot; The power supply battery is connected to the sound sensor through a power supply line, the power supply battery is connected to the signal amplifier through a power supply line, and the power supply battery is connected to the display screen through a power supply line.

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