Gas sensor packaging structure and gas concentration detector

Abstract

The utility model discloses a gas sensor packaging structure and a gas concentration detector, the gas sensor packaging structure comprises a packaging shell and a sealing plate; a detection cavity is formed in the packaging shell, an air inlet and an air outlet are formed in one side of the packaging shell, a glue filling groove is formed in the other side of the packaging shell, and a detection opening is formed in the bottom of the glue filling groove; the detection cavity is sequentially communicated with an air inlet channel, a detection channel and an air outlet channel, the air inlet channel is communicated with the air inlet, the detection channel is communicated with the detection port, and the air outlet channel is communicated with the air outlet; the sealing plate is arranged in the glue pouring groove, an induction assembly is fixed to the sealing plate, the induction assembly is arranged towards the detection opening, and the sealing plate covers the detection opening. The utility model can solve the problem of long-term stability of the sensor.

Description

Technical Field

[0001] This utility model relates to the field of gas detector technology, specifically to a gas sensor packaging structure and a gas concentration detector. Background Technology

[0002] A gas concentration detector is a device used to detect the concentration of specific gases in an environment. It is widely used in fields such as industrial safety, environmental monitoring, medical treatment, and scientific research.

[0003] Traditional helium detection devices suffer from the following technical drawbacks: 1. Poor sensor stability: Relying on a single sensor, long-term use can easily lead to zero-point drift, resulting in decreased accuracy. 2. Limited communication functionality: Typically equipped with only one communication interface. 3. Insufficient interactivity: The interface displays information in a limited way and cannot flexibly switch between states. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a gas sensor packaging structure and a gas concentration detector to solve the problem of long-term stability of the sensor.

[0005] One of the objectives of this utility model is to provide a gas sensor packaging structure, which is achieved by the following technical solution:

[0006] A gas sensor packaging structure, characterized in that it includes a packaging shell and a sealing plate;

[0007] A detection cavity is formed inside the encapsulation shell. An air inlet and an air outlet are formed on one side of the encapsulation shell, and a potting groove is formed on the other side. A detection port is formed at the bottom of the potting groove. An air inlet channel, a detection channel, and an air outlet channel are connected sequentially on the detection cavity. The air inlet channel is connected to the air inlet, the detection channel is connected to the detection port, and the air outlet channel is connected to the air outlet.

[0008] The sealing plate is disposed in the glue-filling tank, and a sensing component is fixed on the sealing plate. The sensing component is positioned facing the detection port, and the sealing plate covers the detection port.

[0009] In one of the objectives of this utility model, an optional embodiment further includes a filler and a cover plate; the filler is filled into the glue-filling groove, and the cover plate is placed over the glue-filling groove to seal it.

[0010] In one of the objectives of this utility model, in an optional embodiment, the encapsulation shell and cover are both made of metal or composite material, and the filler is epoxy resin.

[0011] The second objective of this utility model is to provide a gas concentration detector, which is achieved by the following technical solution:

[0012] A gas concentration detector, characterized in that it includes a gas sensor packaging structure as described in any one of the objectives of this utility model, and further includes a main housing and a main control board;

[0013] The main housing has a top plate, a side plate and a bottom plate. An installation cavity is formed inside the main housing. A first connection port and a second connection port are provided on the side plate.

[0014] The gas sensor encapsulation structure is fixed inside the mounting cavity. The gas inlet of the gas sensor encapsulation structure extends out from the first connection port, and the gas outlet of the gas sensor encapsulation structure extends out from the second connection port.

[0015] The main control board is fixed inside the mounting cavity, and the main control board is electrically connected to the sensing component.

[0016] In one optional embodiment of the present invention, the sensing component includes a helium sensor, a humidity sensor, and a temperature sensor; the helium sensor is a thermal conductivity helium sensor.

[0017] The main control board is equipped with a data processing module and a sensing module, which are electrically connected. The sensing module integrates a temperature compensation circuit and is electrically connected to the sensing component.

[0018] In one optional embodiment of the present invention, an interface panel is provided on the side plate of the main housing; and a power interface is provided on the interface panel.

[0019] The main control board is equipped with a power module, which is electrically connected to the power interface.

[0020] In one of the second objectives of this utility model, an optional implementation is provided, wherein the interface panel is further provided with an Ethernet interface and an RS232 interface.

[0021] The main control board is equipped with a communication module, which is electrically connected to the Ethernet interface and the RS232 interface respectively.

[0022] It also includes an external communication device, which is signal-connected to the communication module.

[0023] In one of the second objectives of this utility model, an optional embodiment is provided with an interactive panel on the top plate of the main housing.

[0024] The main control board is equipped with an interaction module, which is electrically connected to the data processing module and the interaction panel.

[0025] In one of the second objectives of this utility model, an optional implementation method is proposed, wherein the interactive panel includes a basic interface, and the basic interface includes device ID information and gas concentration information.

[0026] In one of the second objectives of this utility model, an optional implementation method is proposed, wherein the interactive panel includes an extended interface, and the extended interface includes device IP address information and gas concentration information.

[0027] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0028] In the gas sensor packaging structure of this invention, helium gas is connected to the inlet via a connector during gas detection and enters the detection chamber through the inlet channel. The output signal of the sensing component, fixed to the detection port by a sealing plate, is transmitted to the data processing module after temperature compensation. The packaging shell and cover plate of this gas sensor packaging structure are both made of stainless steel, and the filler is epoxy resin. By uniformly filling the potting tank with epoxy resin, a tight bond between the resin and the metal is ensured, without air bubbles or gaps, thus enhancing the pressure resistance and stability of the sensing device.

[0029] The gas concentration detector of this invention can solve the problems of temperature drift error and long-term stability of traditional sensors, realize dual-mode communication and remote configuration functions compatible with industrial IoT, and provide a multi-dimensional data display interface to enhance user interaction flexibility. Attached Figure Description

[0030] Figure 1 This is a perspective view of the gas sensor packaging structure of Example 1;

[0031] Figure 2 This is a perspective view of the gas sensor packaging structure from another angle in Example 1;

[0032] Figure 3 This is a front view of the gas sensor packaging structure of Example 1;

[0033] Figure 4 This is a cross-sectional view of the gas sensor packaging structure BB in Example 1;

[0034] Figure 5 This is a cross-sectional view of the CC section of the gas sensor packaging structure in Example 1;

[0035] Figure 6 This is a schematic diagram of the gas concentration detector in Example 2;

[0036] Figure 7 This is a front view of the gas concentration detector in Example 2;

[0037] Figure 8This is a side front view of the gas concentration detector of Example 2;

[0038] Figure 9 This is a front view of another side of the gas concentration detector in Example 2;

[0039] Figure 10 This is an exploded view of the gas concentration detector of Example 2;

[0040] Figure 11 This is a schematic diagram of the basic interface display of the interactive panel of the gas concentration detector in Example 2;

[0041] Figure 12 This is a schematic diagram of the extended interface display of the interactive panel of the gas concentration detector in Example 2;

[0042] Figure 13 This is a schematic diagram of the connection of the main control board of the interactive panel of the gas concentration detector in Example 2.

[0043] In the diagram: 11. Encapsulation shell; 111. Detection chamber; 112. Air inlet; 113. Air outlet; 114. Potting tank; 115. Detection port; 116. Air inlet channel; 117. Detection channel; 118. Air outlet channel; 12. Sealing plate; 14. Cover plate; 20. Main shell; 21. Top plate; 211. Interaction panel; 22. Side plate; 221. First connection port; 222. Second connection port; 223. Power interface; 224. Ethernet interface; 225. RS232 interface; 23. Base plate; 30. Main control board; 31. Data processing module; 32. Sensing module; 321. Temperature compensation circuit; 33. Power module; 34. Communication module; 35. Interaction module; 40. Sensing components; 41. Helium sensor; 42. Humidity sensor; 43. Temperature sensor; 50. Communication equipment. Detailed Implementation

[0044] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Unless otherwise specified, the materials and equipment used in this embodiment are all commercially available. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0045] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0046] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a connection through an intermediary, or a connection within two elements or an interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0047] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0048] Example 1:

[0049] Please refer to Figure 1-5 This embodiment provides a gas sensor packaging structure, including a packaging shell 11, a sealing plate 12, a filler and a cover plate 14;

[0050] The encapsulation shell 11 of this embodiment has a square structure. A detection cavity 111 is formed inside the encapsulation shell 11. An air inlet 112 and an air outlet 113 are formed on one side of the encapsulation shell 11, and a potting groove 114 is formed on the other side. A detection port 115 is formed at the bottom of the potting groove 114. An air inlet channel 116, a detection channel 117 and an air outlet channel 118 are connected in sequence on the detection cavity 111. The air inlet channel 116 is connected to the air inlet 112, the detection channel 117 is connected to the detection port 115, and the air outlet channel 118 is connected to the air outlet 113.

[0051] The sealing plate 12 is disposed in the glue potting tank 114, and a sensing component 40 is fixed on the sealing plate 12. The sensing component 40 is disposed facing the detection port 115, and the sealing plate 12 covers the detection port 115, thereby fixing the sensing component 40 to the detection port 115 through the sealing plate 12.

[0052] The potting groove 114 is sealed by filling it with filler and then covering it with cover plate 14. In this embodiment, both the encapsulation shell 11 and cover plate 14 are made of metal or composite materials, preferably stainless steel or aluminum alloy, to provide stable resistance to deformation. The filler is epoxy resin. By using epoxy resin as a filler and uniformly filling it into the potting groove 114, it is ensured that the resin and metal adhere tightly without air bubbles or gaps, thus enhancing the pressure resistance stability of the sensing component 40.

[0053] Example 2:

[0054] Please refer to Figure 6-13 This embodiment provides a gas concentration detector based on embodiment 1, including the gas sensor packaging structure as described in embodiment 1, and also including a main housing 20 and a main control board 30;

[0055] In this embodiment, the main housing 20 is a square metal housing structure. The main housing 20 has a top plate 21, a side plate 22, and a bottom plate 23. An installation cavity is formed inside the main housing 20. The side plate 22 is provided with a first connection port 221 and a second connection port 222.

[0056] As described in Embodiment 1, the gas sensor encapsulation structure is fixed inside the mounting cavity. The gas inlet 112 of the gas sensor encapsulation structure extends out from the first connection port 221, and the gas outlet 113 of the gas sensor encapsulation structure extends out from the second connection port 222.

[0057] The main control board 30 is fixed inside the mounting cavity, and the main control board 30 is electrically connected to the sensing component 40.

[0058] Specifically, the sensing component 40 in this embodiment includes a helium sensor 41, a humidity sensor 42, and a temperature sensor 43; the helium sensor 41 is a thermal conductivity helium sensor 41, which calculates the helium concentration by measuring the change in gas thermal conductivity, with an accuracy of ±1%FS and a resolution of 100ppm.

[0059] The main control board 30 is equipped with a data processing module 31 and a sensing module 32, which are electrically connected. The sensing module 32 integrates a temperature compensation circuit 321 and is electrically connected to the sensing component 40. Through the built-in temperature compensation circuit 321, the output signal is dynamically corrected, environmental interference is adjusted in real time, and sensor temperature drift error and long-term stability issues are resolved.

[0060] In this embodiment, an interface panel is provided on the side plate 22 of the main housing 20. The interface panel and the gas sensor packaging structure are respectively located on opposite sides of the main housing 20. The interface panel is provided with a power interface 223, an Ethernet interface 224 and an RS232 interface 225.

[0061] The main control board 30 is equipped with a power module 33, which is electrically connected to the power interface 223 to supply power to the device.

[0062] The main control board 30 is equipped with a communication module 34, which is electrically connected to the Ethernet interface 224 and the RS232 interface 225 respectively. By integrating the RS232 (baud rate 115200) and Ethernet interface 224 on the interface panel, the Modbus RTU / TCP protocol is supported.

[0063] Furthermore, an external communication device 50 can be configured, which is connected to the communication module 34 via a signal. The IP address and port can be configured using commands (such as “SETT017.018.007.007:0502”), supporting multi-device networking and enabling dual-mode communication and remote configuration compatible with the Industrial Internet of Things.

[0064] An interactive panel 211 is provided on the top plate 21 of the main housing 20. In this embodiment, the interactive panel 211 adopts a 1.8-inch LCD touch screen. The interactive panel 211 can also be adapted to meet the needs of use or assembly, and other implementation methods can be adopted, including but not limited to graphical user interface (GUI) panels, touch interactive panels, hardware control panels, voice interactive panels, multimodal interactive panels, etc. As long as it can provide an interface or control area for users to interact with the device, it falls within the protection scope described in this embodiment.

[0065] The interactive panel 211 is fixed to the top plate 21 by inlay and has a transparent protective plate on its surface.

[0066] Correspondingly, the main control board 30 is provided with an interaction module 35, which is electrically connected to the data processing module 31 and the interaction panel 211.

[0067] refer to Figure 11-12As shown, the interactive panel 211 in this embodiment includes a basic interface and an extended interface. The basic interface includes device ID information and gas concentration information, and the extended interface includes rotating display of device IP address information and gas concentration information. The interface switching is controlled by a Modbus register.

[0068] Based on the above structure, during use, the quick-connect connector is connected to the air inlet 112, and helium gas enters the detection chamber 111 through the air inlet channel 116. The output signal of the thermal conductivity helium sensor 41 is transmitted to the data processing module 31 after temperature compensation. The data processing module 31 converts the signal into a digital value, transmits it to the interactive module 35 for display, and has a communication module 34 that communicates with external devices via the Modbus protocol. It also sends commands via serial port to set IP addresses, enabling data synchronization among multiple devices within the local area network and realizing the workflow of gas detection-data processing-remote configuration. In the practical application of the helium recovery system, the gas concentration detector of this embodiment is used to monitor the helium concentration, and the data is uploaded to the MES system via Ethernet. The real-time deviation alarm response time is less than 1 second.

[0069] The gas concentration detector in this embodiment can solve the problems of temperature drift error and long-term stability of traditional sensors, realize dual-mode communication and remote configuration functions compatible with industrial IoT, and provide a multi-dimensional data display interface to enhance user interaction flexibility.

[0070] Although certain components and embodiments of this application have been illustrated and described, many modifications and alterations (e.g., variations in the size, dimensions, structure, shape and proportion of the various elements, installation arrangement, material use, color, orientation, etc.) will be conceived by those skilled in the art without actually departing from the scope and spirit of the claims.

[0071] Finally, it should be noted that the above embodiments are only preferred embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A gas sensor packaging structure, characterized in that, Includes the packaging shell and sealing plate; A detection cavity is formed inside the encapsulation shell. An air inlet and an air outlet are formed on one side of the encapsulation shell, and a potting groove is formed on the other side. A detection port is formed at the bottom of the potting groove. An air inlet channel, a detection channel, and an air outlet channel are connected sequentially on the detection cavity. The air inlet channel is connected to the air inlet, the detection channel is connected to the detection port, and the air outlet channel is connected to the air outlet. The sealing plate is disposed in the glue-filling tank, and a sensing component is fixed on the sealing plate. The sensing component is positioned facing the detection port, and the sealing plate covers the detection port.

2. The gas sensor packaging structure according to claim 1, characterized in that, It also includes a filler and a cover plate; the filler is filled into the glue-filling tank, and the cover plate is placed over the glue-filling tank to seal it.

3. The gas sensor packaging structure according to claim 2, characterized in that, The encapsulation shell and cover are both made of metal or composite materials, and the filler is epoxy resin.

4. A gas concentration detector, characterized in that, The gas sensor packaging structure according to any one of claims 1-3 further includes a main housing and a main control board; The main housing has a top plate, a side plate and a bottom plate. An installation cavity is formed inside the main housing. A first connection port and a second connection port are provided on the side plate. The gas sensor encapsulation structure is fixed inside the mounting cavity. The gas inlet of the gas sensor encapsulation structure extends out from the first connection port, and the gas outlet of the gas sensor encapsulation structure extends out from the second connection port. The main control board is fixed inside the mounting cavity, and the main control board is electrically connected to the sensing component.

5. A gas concentration detector according to claim 4, characterized in that, The sensing components include a helium sensor, a humidity sensor, and a temperature sensor; the helium sensor is a thermal conductivity helium sensor. The main control board is equipped with a data processing module and a sensing module, which are electrically connected. The sensing module integrates a temperature compensation circuit and is electrically connected to the sensing component.

6. A gas concentration detector according to claim 5, characterized in that, An interface panel is provided on the side plate of the main housing; a power interface is provided on the interface panel; The main control board is equipped with a power module, which is electrically connected to the power interface.

7. A gas concentration detector according to claim 6, characterized in that, The interface panel is also equipped with an Ethernet interface and an RS232 interface; The main control board is equipped with a communication module, which is electrically connected to the Ethernet interface and the RS232 interface respectively. It also includes an external communication device, which is signal-connected to the communication module.

8. A gas concentration detector according to claim 5, characterized in that, An interactive panel is provided on the top plate of the main housing; The main control board is equipped with an interaction module, which is electrically connected to the data processing module and the interaction panel.

9. A gas concentration detector according to claim 8, characterized in that, The interactive panel includes a basic interface, which includes device ID information and gas concentration information.

10. A gas concentration detector according to claim 9, characterized in that, The interactive panel includes an extended interface, which includes device IP address information and gas concentration information.

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