Online high-speed gas detection device for production line

Abstract

The utility model discloses an online high-speed gas detection device for a production line, and belongs to gas detection devices. Comprising a shell, dustproof filtering sponge, a first electromagnetic valve, a second electromagnetic valve, a vacuum generator, a silencer, a miniature air chamber, a one-way valve, a sensor array, a controller, a color sensor, an air inlet pipeline, a miniature air chamber air outlet pipeline and a miniature air chamber purging air inlet pipeline. The air inlet pipeline comprises an air inlet pipe, a T-shaped three-way connector, a first pipeline, a second pipeline and a third pipeline. The sensor array comprises a sensing head and an analog-to-digital conversion module. The controller comprises a single-chip microcontroller, a power management module and an electromagnetic valve driving module. The controller carries out analysis and judgment according to data of the sensor array, and real-time monitoring of the production process is achieved. The gas inlet pipeline is connected with a high-pressure gas source, and through the device disclosed by the utility model, gas emitted by products on an assembly line can be quickly collected and analyzed. Compared with the prior art, the utility model has the beneficial effects that products can be detected on an assembly line, and samples do not need to be taken down from the assembly line for physical and chemical inspection. Gas emitted by products can be collected, sampled and analyzed within an extremely short time, and the high-speed operation requirement of a production line is met. Based on an electronic nose technology, a sensor array is used for collecting data, so that the accuracy is high.

Description

Technical Field

[0001] The utility model relates to a gas detection device, in particular to an online high-speed gas detection device used in a production line. Background Art

[0002] With the continuous development of production, the requirements for production efficiency and product quality are getting higher and higher. In the production process, the detection and monitoring of various gases are particularly important to ensure the safety and stability of the production process. Traditional gas detection methods usually require samples to be removed from the production line for physical and chemical testing. This method is time-consuming and cannot achieve real-time monitoring, which may lead to problems in the production process that cannot be discovered and handled in time. Functional testing relies on human sensory organs to evaluate and judge the quality of products, and cannot accurately determine whether the product is qualified.

[0003] To solve this problem, some existing online gas detection systems have been put into use. However, these systems still have certain limitations in terms of detection speed and accuracy. For example, some systems have slow detection speeds and cannot meet the high-speed operation requirements of production lines; some systems have low accuracy rates, which may lead to false alarms or missed alarms. Summary of the invention

[0004] The purpose of the utility model is to solve the deficiencies in the prior art and to provide an online high-speed gas detection device for a production line, thereby solving the technical problems of slow detection speed and low accuracy in the prior art.

[0005] In order to achieve the above technical purpose, an online high-speed gas detection device for a production line is provided, characterized in that it includes the following components: a shell, which is composed of a shell body and a detachable shell bottom cover, a sealing strip is provided between the shell bottom cover and the shell body, and a through hole is provided on the shell bottom cover; a dust filter sponge is provided in the through hole of the shell bottom cover to prevent external dust from entering the device; an air intake duct, including an air intake pipe, a T-shaped three-way joint, a first pipe, a second pipe and a third pipe, wherein the air intake pipe is connected to the first pipe and the second pipe respectively through the T-shaped three-way joint, the first pipe is connected to the solenoid valve 1, the second pipe is connected to the solenoid valve 2, and the third pipe is used to connect the solenoid valve 1 and the air inlet hole of the vacuum generator; a micro air chamber, including: an air outlet pipe for passing the vacuum generator The suction hole is connected to the micro air chamber, and the purge gas inlet pipe is used to provide purge gas to the micro air chamber through solenoid valve 2. The bottom of the micro air chamber is connected to the outside atmosphere through a one-way valve; the sensor array is placed inside the micro air chamber for gas detection; the vacuum generator, whose suction hole is connected to the micro air chamber outlet pipe, and the exhaust hole is connected to the muffler inlet hole; the muffler is connected to the outside atmosphere through the through hole on the side wall of the shell; the color sensor is fixed on the outside of the shell for identifying color information; the controller is electrically connected to solenoid valve 1, solenoid valve 2, the sensor array and the color sensor, and is used to control the operation of the device; shell accessories: a threaded hole is provided on the top cover of the shell for fixing the device, and a cable hole is provided on the top cover, and the upper computer is electrically connected to the controller by passing the cable through the cable hole.

[0006] The online high-speed gas detection device for a production line is characterized in that the sensor array includes a sensor head and an analog-to-digital conversion module, the sensor head is electrically connected to the analog-to-digital conversion module, the sensor head includes at least one gas sensor, and the gas sensor includes any one or more of TGS2600, TGS2602, TGS2610, TGS2611, TGS2620, TGS813, TGS822, TGS822TF, MQ-2, MQ-3, MQ-4, MQ-5, MQ-6, MQ-7, MQ-8, MQ-9, MQ-131, MQ-135, MQ-136, MQ-137 and MQ-138 gas sensors.

[0007] The controller includes a single-chip microcontroller, a power management module and a solenoid valve drive module. The single-chip microcontroller is electrically connected to the solenoid valve drive module. The power management module is electrically connected to the single-chip microcontroller, the solenoid valve drive module, solenoid valve 1, solenoid valve 2, and the sensor array.

[0008] Furthermore, the air inlet pipe, the first pipe, the second pipe, the third pipe, the micro-air chamber outlet pipe, and the micro-air chamber purge air inlet pipe are preferably made of copper pipes, the material of the copper material conforms to the GB / T 5231-2012 standard, the dimensional accuracy of the copper tee conforms to the GB / T 8890-2018 standard, and copper pipe joints are preferably used at the connections between the copper pipe and the T-shaped tee joint, solenoid valve 1, solenoid valve 2, micro-air chamber, vacuum generator and other equipment, and the dimensional accuracy of the copper pipe joints conforms to the GB / T 11618.1-2008 standard.

[0009] Furthermore, the air inlet pipe is connected to the high-pressure air source through a hose using a hose quick connector, the hose quick connector complies with the GB / T 22076-2008 standard, and preferably uses a C series plug.

[0010] Furthermore, the high-pressure gas source complies with the GB / T 13277-1991 standard, and the required minimum quality grade is 2, 6, 1.

[0011] Preferably, the dust-proof filter sponge uses polyurethane sponge.

[0012] Preferably, the vacuum generator uses a vacuum generator based on the Venturi effect, and a muffler is arranged behind the exhaust hole of the vacuum generator to reduce airflow oscillation.

[0013] Compared with the prior art, the beneficial effects of the utility model include:

[0014] It is possible to test products on the production line without removing samples from the production line for physical and chemical testing.

[0015] The gas emitted by the product can be collected, sampled and analyzed in a very short time to meet the high-speed operation requirements of the production line.

[0016] Based on electronic nose technology, data is collected using a sensor array, resulting in higher accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional view of the utility model.

[0018] Figure 2 is an isometric view of a micro air chamber.

[0019] Figure 3 This is a cross-sectional view of a vacuum generator.

[0020] Figure 1In: solenoid valve 1, solenoid valve 2, vacuum generator 3, micro air chamber 4, sensor array 5, one-way valve 6, controller 7, dust filter sponge 8, air intake pipe 9, T-shaped three-way connector 10, third pipe 11, muffler 12, micro air chamber purge air intake pipe 13, micro air chamber outlet pipe 14, first pipe 15, second pipe 16, housing 17, color sensor 18, threaded hole 19, cable hole 20.

[0021] Figure 2 Middle: micro air chamber 4, micro air chamber purge air inlet pipe 13, micro air chamber outlet pipe 14.

[0022] Figure 3 Middle: vacuum generator air inlet hole A, vacuum generator suction hole B, Venturi nozzle C, muffler D. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] In the description of the present utility model, it is to be understood that when a component is referred to as being "fixed" or "set" or "connected" to another component, it may be located directly or indirectly on the other component. The terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. The terms "first", "second", etc. are only used for the convenience of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0025] The following examples are used to illustrate the present invention, but cannot be used to limit the scope of protection of the present invention. The conditions in the examples can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0026] The utility model provides an online high-speed gas detection device for a production line, comprising an air intake pipe 9 connected to a high-pressure gas source, the air intake pipe 9 being connected to a first pipeline 15 and a second pipeline 16 through a T-shaped three-way joint 10, the first pipeline 15 being connected to a solenoid valve 1, the second pipeline 16 being connected to a solenoid valve 2, the solenoid valve 1 being connected to an air inlet of a vacuum generator 3 through a third pipeline 11, the solenoid valve 2 being connected to a micro air chamber 4 through a micro air chamber purge air inlet pipeline 13, the vacuum generator 3 suction hole being connected to the micro air chamber 4 through a micro air chamber outlet pipeline 14, the vacuum generator 3 exhaust hole being connected to an air inlet of a muffler 12, the bottom of the micro air chamber 4 being connected to a one-way valve 6, the one-way valve being connected to the outside atmosphere, a dust filter sponge 8 being placed below the one-way valve 6, the bottom cover through hole of a housing 17, and a sensor module 5 being placed in the micro air chamber 4. A color sensor 18 is fixed to the outside of the housing 17, and the solenoid valve 1, the solenoid valve 2, the sensor module 5, and the color sensor 18 are electrically connected to a controller 7.

[0027] An online high-speed gas detection device for a production line, the specific detection steps are as follows:

[0028] The detection device is installed above the production line using the threaded holes 19 reserved on the housing, and is sufficiently close to the product to be detected. The sensor head included in the sensor array is preheated by turning on the device in advance. After the preheating is completed, the preheating data is cleared and formal work begins.

[0029] When the product to be tested passes through the conveyor belt in the area where the above-mentioned detection device is located, the color sensor 18 detects a color change, that is, when it detects that the product has passed through the above-mentioned detection device, the controller 7 sends a control command to the solenoid valve 1, so that the solenoid valve 1 is in an open state, and the high-pressure gas enters through the air inlet pipe 9, enters the first pipeline 15 through the T-type three-way connector 10, enters the air inlet hole of the vacuum generator 3 through the solenoid valve 1, and finally enters the air inlet hole of the muffler 12 from the exhaust hole of the vacuum generator 3 and is discharged into the atmosphere. In the above process, when the gas flows through the vacuum generator 3, a low pressure is generated at the suction hole of the vacuum generator 3. Under the action of the pressure gradient, the air flows from the high-pressure area to the low-pressure area. Therefore, the gas emitted by the product to be tested flows to the suction hole of the vacuum generator 3 through the dust filter sponge 8, the one-way valve 6, the micro air chamber 4 and the micro air chamber outlet pipe 14. The dust filter sponge 8 blocks the entry of larger particles to prevent the sensor array 5 from being damaged and the micro air chamber 4 from being contaminated. When the gas to be tested enters the micro gas chamber 4, the sensor head of the sensor array 5 detects the relevant gas and causes its resistance to change, thereby obtaining the original analog signal of the gas sensor. The above signal is converted into a digital signal through the analog-to-digital conversion module of the sensor array 5 and input to the controller 7. The controller 7 records the above signal and sends it to the host computer for analysis.

[0030] When the color detected by the color sensor 18 returns to the initial state, that is, the product to be tested has passed the conveyor belt in the area where the above-mentioned detection device is located and the next product to be tested has not yet entered the conveyor belt in the area where the above-mentioned detection device is located, the controller 7 sends a control command to the solenoid valve 1 and the solenoid valve 2, so that the solenoid valve 1 is in a closed state, the solenoid valve 2 is in an open state, the vacuum generator 3 stops working, and the high-pressure gas enters through the air intake pipe 9, enters the second pipeline 16 through the T-type three-way connector 10, and enters the micro-chamber purge air intake pipeline 13 through the solenoid valve 2 to purge the inside of the micro-chamber 4, and restores the inside of the micro-chamber 4 to the initial state in a very short time. The one-way valve 6 ensures that the purge gas will not purge the conveyor belt downward to prevent it from interfering with the collection and measurement of the gas emitted by the next product to be tested.

[0031] After the purging is completed, that is, the values ​​detected by the sensor array return to the initial state, the controller 7 sends a control command to the solenoid valve 2 to close the solenoid valve 2 and wait for the next detection.

[0032] The specific implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. An online high-speed gas detection device for a production line, characterized in that: The device comprises the following components: a shell, which is composed of a shell body and a detachable shell bottom cover, a sealing strip is arranged between the shell bottom cover and the shell body, and a through hole is arranged on the shell bottom cover; a dust filter sponge is arranged in the through hole of the shell bottom cover, and is used to prevent external dust from entering the device; an air intake duct, which comprises an air intake pipe, a T-shaped three-way joint, a first pipe, a second pipe and a third pipe, wherein the air intake pipe is connected to the first pipe and the second pipe respectively through the T-shaped three-way joint, the first pipe is connected to the solenoid valve 1, the second pipe is connected to the solenoid valve 2, and the third pipe is used to connect the solenoid valve 1 and the air intake hole of the vacuum generator; a micro air chamber, which comprises: an air outlet pipe, which is used to connect to the micro air chamber through the suction hole of the vacuum generator, and a purge air intake pipe. , used to provide purge gas to the micro air chamber through solenoid valve 2, and the bottom of the micro air chamber is connected to the outside atmosphere through a one-way valve; a sensor array is placed inside the micro air chamber for gas detection; a vacuum generator, whose suction hole is connected to the micro air chamber outlet pipe, and the exhaust hole is connected to the muffler inlet hole; the muffler is connected to the outside atmosphere through the through hole in the side wall of the shell; a color sensor is fixed on the outside of the shell and is used to identify color information; a controller is electrically connected to solenoid valve 1, solenoid valve 2, the sensor array and the color sensor, and is used to control the operation of the device; shell accessories: a threaded hole is provided on the top cover of the shell for fixing the device, and a cable hole is provided on the top cover, and the upper computer is electrically connected to the controller by passing the cable through the cable hole.

2. The online high-speed gas detection device for a production line according to claim 1, characterized in that: The vacuum generator is a vacuum generator based on the Venturi effect.

3. The online high-speed gas detection device for a production line according to claim 1, characterized in that: The sensor array includes a sensor head and an analog-to-digital conversion module, the sensor head is electrically connected to the analog-to-digital conversion module, the sensor head includes at least one gas sensor, and the gas sensor includes any one or more of TGS2600, TGS2602, TGS2610, TGS2611, TGS2620, TGS813, TGS822, TGS822TF, MQ-2, MQ-3, MQ-4, MQ-5, MQ-6, MQ-7, MQ-8, MQ-9, MQ-131, MQ-135, MQ-136, MQ-137 and MQ-138 gas sensors.

4. The online high-speed gas detection device for a production line according to claim 1, characterized in that: The controller includes a single-chip microcontroller, a power management module and a solenoid valve drive module. The single-chip microcontroller is electrically connected to the solenoid valve drive module, and the power management module is electrically connected to the single-chip microcontroller, the solenoid valve drive module, the solenoid valve, and the sensor array.

5. The online high-speed gas detection device for a production line according to claim 1, characterized in that: The dustproof filtering sponge is a polyurethane sponge.

6. The on-line high-speed gas detection device for a production line according to claim 1, characterized in that: The air inlet pipe is connected to the high-pressure air source through a hose using a hose quick connector.

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