A novel ultra-low pressure cavity sensor

Abstract

The application discloses a novel ultralow-pressure cavity sensor, which comprises an air inlet mechanism, a detection mechanism and a processing mechanism, the detection mechanism is fixedly installed on the top of the air inlet mechanism, the air inlet mechanism is used for inputting the gas from the outside, the detection mechanism is used for detecting whether a component to be detected in the outside leaks, one end of the detection mechanism is electrically connected with the processing mechanism, and the processing mechanism is used for receiving and processing the leakage signal of the component to be detected. The application has high measurement precision, high sensitivity and high precision, the test speed is greatly improved, the test time is shortened, automatic leak detection can be realized, the application can be integrated into a clamp and other automatic equipment and effectively work in a severe production environment, and high-precision test results of flow 0.01cc / min and pressure attenuation 0.1Pa can be accurately provided through several seconds of test time.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of ultralow air pressure sensors, in particular to a novel ultralow air pressure cavity type sensor. BACKGROUND

[0002] When manufacturing machines and devices such as automobiles, aviation, electronics, medical devices, refrigeration devices, household appliances and gas equipment, the parts inside the devices need to be detected for air tightness to ensure that the produced machine parts meet the use and safety requirements. When detecting the air tightness of the device, a gas leak detector device needs to be used for detection.

[0003] However, the existing detection equipment cannot accurately detect slight leakage of parts, and in the fields of automobiles and aviation, small gas leakage can cause great safety hazards. Moreover, the existing sensor detection equipment has low detection efficiency and relatively low gas flow test precision. Therefore, the application provides a novel ultralow air pressure cavity type sensor. SUMMARY

[0004] The application aims to provide a novel ultralow air pressure cavity type sensor to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme: a novel ultralow air pressure cavity type sensor, comprising an air inlet mechanism, a detection mechanism and a processing mechanism, the detection mechanism is fixedly installed at the top of the air inlet mechanism, the air inlet mechanism is used for inputting gas from the outside, the detection mechanism is used for detecting whether the part to be detected from the outside leaks, one end of the detection mechanism is electrically connected with the processing mechanism, and the processing mechanism is used for receiving and processing the leakage signal of the part to be detected.

[0006] Preferably, the detection mechanism comprises a shell, a fixed seat end cover, a magnetic ring support, a metal diaphragm, an air inlet pipe, an air inlet fixed seat and a copper male, the shell is fixedly installed at the top of the air inlet mechanism, the opposite sides of the shell are fixedly installed with the magnetic ring support and the metal diaphragm through the copper male, the two sides of the outer wall of the shell are fixedly connected with the air inlet fixed seat, the air inlet fixed seat is provided with the air inlet pipe in the inside, the side, away from the shell, of the air inlet fixed seat is fixedly installed with the fixed seat end cover, and the top of the shell is fixedly installed with the processing mechanism through a circuit board support.

[0007] Preferably, the processing mechanism comprises a sensor circuit board, a fixed nut and a setting device, the sensor circuit board is fixedly installed at the top of the circuit board support through the fixed nut, one end of the sensor circuit board is electrically connected with the detection mechanism, and the surface of the sensor circuit board is provided with the setting device.

[0008] Preferably, the air inlet mechanism comprises a valve base, air inlets, and a pressure sensor, the shell is fixedly installed on the top of the valve base, two groups of air inlets are formed through the surface of the valve base, the surface of the valve base is provided with the pressure sensor, external air enters through the air inlet valve on one side of the valve base, and the external air is divided into three groups, one group of air is in fixed communication with the pressure sensor, and the other two groups of air are in communication with the two groups of air inlets, one side of the air inlet penetrates through the top of the valve base, and the two groups of output air are in fixed communication with the bottom of the magnetic ring support.

[0009] Preferably, the air generated by the external air compressor is filtered through the filter before being communicated with the air inlet valve on one side of the valve base.

[0010] Compared with the prior art, the present application has the following beneficial effects: the present application has high measurement accuracy, high sensitivity and high precision, such a design can greatly improve the test speed and shorten the test time, can realize automatic leak detection, can be integrated into a clamp and other automatic equipment, can effectively work in a harsh production environment, and can accurately provide a high-precision test result of flow 0.01 cc / min and pressure decay 0.1 Pa through a test time of several seconds. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a front view structural schematic diagram of the present application.

[0012] In the figure: 1 valve base, 2 shell, 3 fixed seat end cover, 4 magnetic ring support, 5 metal diaphragm, 6 sensor circuit board, 7 air inlet pipe, 8 air inlet fixed seat, 9 copper public, 10 circuit board support, 11 fixed nut, 12 setting device, 13 air inlet, 14 pressure sensor, 15 air inlet mechanism, 16 detection mechanism, 17 processing mechanism. DETAILED DESCRIPTION

[0013] 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. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0014] Please refer to Figure 1The application provides a technical scheme: a novel ultralow pressure cavity type sensor, which comprises an air inlet mechanism 15, a detection mechanism 16 and a processing mechanism 17, the detection mechanism 16 is fixedly installed on the top of the air inlet mechanism 15, the air inlet mechanism 15 is used for inputting gas from the outside, the detection mechanism 16 is used for detecting whether a component to be detected in the outside leaks, one end of the detection mechanism 16 is electrically connected with the processing mechanism 17, and the processing mechanism 17 is used for receiving and processing a leakage signal of the component to be detected.

[0015] Preferably, the detection mechanism 16 comprises a shell 2, a fixed seat end cover 3, a magnetic ring support 4, a metal diaphragm 5, an air inlet pipe 7, an air inlet fixed seat 8 and a copper public 9, the shell 2 is fixedly installed on the top of the air inlet mechanism 15, the opposite sides of the shell 2 are fixedly installed with the magnetic ring support 4 and the metal diaphragm 5 through the copper public 9, the air inlet fixed seat 8 is fixedly connected to the two sides of the outer wall of the shell 2, the air inlet pipe 7 is arranged in the air inlet fixed seat 8, the fixed seat end cover 3 is fixedly installed on the side, away from the shell 2, of the air inlet fixed seat 8, and the processing mechanism 17 is fixedly installed on the top of the shell 2 through a circuit board support 10.

[0016] Preferably, the processing mechanism 17 comprises a sensor circuit board 6, a fixed nut 11 and a disposer 12, the sensor circuit board 6 is fixedly installed on the top of the circuit board support 10 through the fixed nut 11, one end of the sensor circuit board 6 is electrically connected with the detection mechanism 16, and the disposer 12 is arranged on the surface of the sensor circuit board 6.

[0017] Preferably, the air inlet mechanism 15 comprises an air valve base 1, an air inlet 13 and a pressure sensor 14, the shell 2 is fixedly installed on the top of the air valve base 1, two groups of air inlets 13 are arranged on the surface of the air valve base 1, the pressure sensor 14 is arranged on the surface of the air valve base 1, gas from the outside enters the air valve base 1 through an air inlet valve on one side of the air valve base 1 and is divided into three groups, one group of gas is in fixed communication with the pressure sensor 14, and the other two groups of gas are in communication with the two groups of air inlets 13, one side of the air inlet 13 penetrates through the top of the air valve base 1, and the two groups of output gas are in fixed communication with the bottom of the magnetic ring support 4.

[0018] Preferably, the gas generated by an air compressor from the outside is filtered through a filter before being communicated with the air inlet valve on one side of the air valve base 1.

[0019] In use, first, the gas produced by the external air compressor is filtered by the filter and communicated to the gas valve base 1 side of the inlet valve door, and when the gas is accessed to the gas valve base 1 side of the inlet valve door, it will be regulated by the pressure regulating valve, then the inlet valve door will divide the gas into three paths, one of which is communicated with the pressure sensor 14 for detecting the pressure of the incoming gas, and the other two paths are communicated with the two groups of air inlets 13, which extend through the top of the gas valve base 1 and are communicated with the bottom of the air inlet pipe 7, and before use, the two groups of air inlets 13 are completely closed, and the air pressure in the two cavities separated by the magnetic ring bracket 4 and the metal diaphragm 5 inside the detection mechanism 16 is balanced, so the magnetic ring bracket 4 and the metal diaphragm 5 do not change, when the detected component needs to be detected, open one end of one group of air inlets 13 to form the outlet and connect it with the customer's detected product, when the detected component leaks, the magnetic ring bracket 4 and the metal diaphragm 5 will be deformed, the deformation data will be transmitted to the sensor circuit board 6 through the wire, then the sensor circuit board 6 will convert the data into signal output, and the data will be displayed on the external display screen, through this design, the sensitivity and zero drift of the sensor can be effectively controlled.

[0020] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, the scope of the present application being defined by the appended claims and their equivalents.

Claims

1. A novel ultra-low pressure cavity sensor, comprising an air inlet mechanism (15), a detection mechanism (16) and a processing mechanism (17), characterized in that: The detection mechanism (16) is fixedly installed on the top of the air inlet mechanism (15), the air inlet mechanism (15) is used for inputting gas from the outside, the detection mechanism (16) is used for detecting whether the outside to be detected component leaks, one end of the detection mechanism (16) is electrically connected with the processing mechanism (17), and the processing mechanism (17) is used for receiving and processing the leakage signal of the to be detected component. The detection mechanism (16) comprises a shell (2), a fixed seat end cover (3), a magnetic ring support (4), a metal diaphragm (5), an air inlet pipe (7), an air inlet fixed seat (8), a copper public (9), the shell (2) is fixedly installed on the top of the air inlet mechanism (15), the opposite sides of the shell (2) are fixedly installed with the magnetic ring support (4) and the metal diaphragm (5) through the copper public (9), the air inlet fixed seat (8) is fixedly connected on the both sides of the outer wall of the shell (2), the air inlet pipe (7) is arranged in the air inlet fixed seat (8), the fixed seat end cover (3) is fixedly installed on the side, away from the shell (2), of the air inlet fixed seat (8), and the processing mechanism (17) is fixedly installed on the top of the shell (2) through the circuit board support (10).

2. A novel ultra-low pressure cavity sensor according to claim 1, characterized in that: The processing mechanism (17) comprises a sensor circuit board (6), a fixed nut (11) and a disposer (12), the sensor circuit board (6) is fixedly installed on the top of the circuit board support (10) through the fixed nut (11), one end of the sensor circuit board (6) is electrically connected with the detection mechanism (16), and the surface of the sensor circuit board (6) is provided with the disposer (12).

3. A novel ultra-low pressure cavity sensor according to claim 2, characterized in that: The air inlet mechanism (15) comprises an air valve base (1), an air inlet (13) and a pressure sensor (14), the shell (2) is fixedly installed on the top of the air valve base (1), two groups of air inlets (13) are formed on the surface of the air valve base (1), the pressure sensor (14) is arranged on the surface of the air valve base (1), the gas from the outside enters the air valve door on one side of the air valve base (1) and is divided into three groups, one group of gas is in fixed communication with the pressure sensor (14), the other two groups of gas are in communication with the two groups of air inlets (13), one side of the air inlet (13) penetrates the top of the air valve base (1), and the two groups of output gas are in fixed communication with the bottom of the magnetic ring support (4).

4. A novel ultra-low pressure cavity sensor according to claim 3, characterized in that: The gas generated by the air compressor from the outside is filtered by the filter before being communicated with the air valve door on one side of the air valve base (1).

Images