A gas leak detection apparatus and system

Abstract

The application relates to the field of gas pressure detection, and discloses a gas leakage detection device and system. The gas leakage detection device comprises an air inlet pipe, a valve and a pressure gauge. The air inlet pipe is connected with a heating plate. The valve is arranged on the air inlet pipe path. The valve is used for controlling the on-off of the air inlet pipe. The pressure gauge is arranged on the air inlet pipe and located between the valve and the heating plate. In the application, the outlet of the heating plate to be detected is closed and connected with the air inlet pipe. After the valve is opened, the gas is introduced to make the pressure gauge stable, and then the valve is closed. The sealing property of the heating plate is directly judged by observing the value change of the pressure gauge. The problems of low efficiency, difficult positioning of hidden leakage points and easy misjudgment and missed detection caused by artificial one-by-one checking of the leakage of the heating plate of a cut tobacco drying machine are effectively solved.

Description

Technical Field

[0001] This application relates to the field of gas pressure detection, and in particular to a gas leak detection device and system. Background Technology

[0002] In cigarette production, the tobacco drying machine is a key piece of equipment in the tobacco processing workshop, and its performance directly affects the quality of the tobacco leaves. The drying machine precisely controls the heating and drying process to dry the tobacco leaves. Heating evaporates the moisture in the tobacco leaves into the surrounding air, which is then carried away by the airflow, thus reducing the moisture content of the tobacco leaves and achieving the ideal moisture content and shape, providing high-quality raw materials for subsequent processes such as cutting and rolling. However, with prolonged operation, the thin-plate components inside the drying machine's array are prone to wear and aging due to long-term exposure to high temperatures, high pressures, and mechanical stress, leading to decreased sealing performance and leakage problems.

[0003] When a gas leak occurs in a wire drying machine, the leak point is usually located manually, requiring identification of which heating plate is leaking. Current methods involve checking flange connections, welds, pipe joints, and other potential leak sites one by one. This is not only time-consuming and labor-intensive but also prone to omissions or misjudgments due to human error. Furthermore, traditional methods often fail to effectively locate hidden or difficult-to-reach leaks, further prolonging the investigation time. Utility Model Content

[0004] In view of this, the purpose of this application is to overcome the shortcomings of the prior art and provide a gas leak detection device and system.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: This application provides: A gas leak detection device, comprising: An air intake pipe is connected to a heating plate; A valve is provided on the intake pipe path and is used to control the opening and closing of the intake pipe; A pressure gauge is installed on the air inlet pipe and is located between the valve and the heating plate.

[0006] Furthermore, the heating plate includes a plate body, in which a heating channel is provided. The heating channel has an air inlet and an air outlet. A connecting component is provided at the air inlet, and the air inlet pipe is connected to the heating channel through the connecting component. A sealing component is provided at the air outlet, and the sealing component is used to seal the air outlet.

[0007] Furthermore, the heating channel is arranged in a serpentine shape on the plate.

[0008] Furthermore, the connecting assembly includes a first connecting pipe connected to the air inlet, a first flange being provided at the end of the first connecting pipe away from the plate, and a second flange adapted to the first flange being provided at the end of the air inlet pipe facing the plate, the first flange and the second flange being connected by a first connecting member.

[0009] Furthermore, a sealing element is provided at the connection between the first flange and the second flange.

[0010] Furthermore, both the first flange and the second flange are circular or polygonal.

[0011] Furthermore, the sealing assembly includes a second connecting pipe connected to the air outlet, a third flange fixedly provided at the end of the second connecting pipe away from the plate body, a sealing cover provided on the side of the third flange away from the second connecting pipe, and the third flange and the sealing cover are connected by a second connector.

[0012] Furthermore, a sealing plate is provided at the connection between the third flange and the sealing cover.

[0013] Furthermore, the outer diameter of the sealing piece is D1, and the inner diameter of the second connecting tube is D2, satisfying that D1 > D2.

[0014] This application also provides a gas leak detection system, which includes: The gas leak detection device described in any one of the above statements; An air source is connected to the air intake pipe.

[0015] This application solves the problems of low efficiency, difficulty in locating hidden leaks, and easy misjudgment and missed detection caused by manually checking the heating plate of the wire drying machine one by one for leakage. By sealing the air outlet of the heating plate to be tested and connecting it to the air inlet pipe, and introducing gas with the valve open to stabilize the pressure gauge reading, the valve is closed. The sealing performance of the heating plate can be directly judged by observing the change in the pressure gauge value.

[0016] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This diagram shows the structure of the detection device of this application in conjunction with the heating plate; Figure 2 This paper shows a schematic diagram of the structure of the intake pipe, valve, and pressure gauge in their combined state. Figure 3 A schematic diagram of the connection component structure of this application is shown; Figure 4 A schematic diagram of the closed component structure of this application is shown; Figure 5 A schematic diagram of the sealing cover of this application being disposed on the third flange is shown.

[0019] Explanation of key component symbols: 100 - Inlet pipe; 110 - Connecting assembly; 111 - First connecting pipe; 112 - First flange; 113 - Second flange; 114 - First connecting piece; 115 - Seal; 200 - Valve; 300 - Pressure gauge; 400 - Heating plate; 410 - Plate body; 420 - Heating channel; 430 - Sealing assembly; 431 - Second connecting pipe; 432 - Third flange; 433 - Sealing cover; 434 - Second connecting piece; 435 - Sealing plate. Detailed Implementation

[0020] The embodiments of this application are described in detail below. Examples of these 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.

[0021] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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 of this application.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0023] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0025] This application provides a gas leak detection device, which includes an inlet pipe 100, a valve 200, and a pressure gauge 300. The inlet pipe 100 is connected to a heating plate 400. The valve 200 is disposed in the path of the inlet pipe 100 and is used to control the opening and closing of the inlet pipe 100. The pressure gauge 300 is disposed on the inlet pipe 100 and is located between the valve 200 and the heating plate 400.

[0026] Please see Figure 1 As shown, the heating plate 400 can first be connected to the air inlet pipe 100. The valve 200 is activated to open the air inlet pipe 100, making the air inlet pipe 100 in a connected state. Gas from the outside is delivered to the heating plate 400 through the air inlet pipe 100. At this time, the pressure gauge 300 can detect the gas pressure in the gas path. After the gas pressure stabilizes, the valve 200 can be closed to disconnect the air inlet pipe 100, preventing external gas from continuing to enter the heating plate 400. At this time, observe the value of the pressure gauge 300 to see if there is any change. If the gas pressure decreases, it indicates that there is a leak in the heating plate 400. If the pressure gauge 300 does not change, it indicates that the heating plate 400 is completely sealed, thus realizing the detection of leaks.

[0027] In some embodiments, the heating plate 400 includes a plate body 410, a heating channel 420 is provided in the plate body 410, the heating channel 420 has an air inlet and an air outlet, a connecting component 110 is provided at the air inlet, the air inlet pipe 100 is connected to the heating channel 420 through the connecting component 110, and a sealing component 430 is provided at the air outlet for sealing the air outlet.

[0028] Please continue reading. Figure 1 As shown, the plate 410 has a heating channel 420. The heating channel 420 is used to flow high-temperature gas or high-temperature liquid to transfer heat to the air around the plate 410, thereby heating and drying the tobacco. During the test, in order to prevent the gas flowing through the heating channel 420 from being discharged from the outlet, a sealing component 430 is set at the outlet. The outlet is blocked by the sealing component 430, so that the gas in the heating channel 420 maintains a certain pressure to meet the test requirements.

[0029] In some embodiments, the heating channel 420 is arranged in a serpentine pattern on the plate 410.

[0030] like Figure 1 As shown, in order to improve heating efficiency, the length of the heating channel 420 in the plate 410 can be increased. That is, the heating channel 420 can be distributed in a serpentine bend, thereby increasing the length of the plate 410 and thus improving the heat utilization rate, and fully transferring heat to the tobacco to dry it.

[0031] In some embodiments, the connecting assembly 110 includes a first connecting pipe 111 connected to the air inlet, a first flange 112 is provided at the end of the first connecting pipe 111 away from the plate 410, and a second flange 113 adapted to the first flange 112 is provided at the end of the air inlet pipe 100 facing the plate 410, and the first flange 112 and the second flange 113 are connected by a first connector 114.

[0032] Please see Figure 2 As shown, in order to ensure the connection between the air inlet pipe 100 and the heating channel 420, a first connecting pipe 111 is fixedly connected to the plate 410, and the first connecting pipe 111 is connected to the air inlet of the heating channel 420. The first flange 112 at the end of the heating channel 420 is connected to the second flange 113 at the end of the air inlet pipe 100, thereby realizing the connection between the air inlet pipe 100 and the air inlet of the heating channel 420 and realizing gas transportation.

[0033] Furthermore, in order to prevent the first flange 112 from separating from the second flange 113, holes are drilled in the first flange 112 and the second flange 113 respectively, and the holes at each position are coaxial. Then the first connector 114 can be inserted into these holes to achieve a connection and fastening, thereby preventing the first flange 112 from separating from the second flange 113.

[0034] For example, the first connector 114 consists of bolts and nuts, that is, the first flange 112 and the second flange 113 are fastened together by the cooperation of bolts and nuts.

[0035] In some embodiments, a sealing element 115 is provided at the connection between the first flange 112 and the second flange 113.

[0036] Please see Figure 3 As shown, in order to prevent gas leakage from the connection between the first flange 112 and the second flange 113, a sealing element 115 is provided between the first flange 112 and the second flange 113 to improve the sealing performance of the connection between the first flange 112 and the second flange 113.

[0037] Specifically, corresponding annular grooves can be made on the faces of the first flange 112 and the second flange 113 facing each other to prevent the seal 115 from being misaligned after the first flange 112 and the second flange 113 are joined, which would lead to seal failure.

[0038] For example, the seal 115 is a sealing ring, and the diameter of the sealing ring should be larger than the inner diameter of the first connecting pipe 111.

[0039] In some embodiments, the first flange 112 and the second flange 113 are both circular or polygonal. In this embodiment, both the first flange 112 and the second flange 113 are polygonal, and both are square.

[0040] In some embodiments, the sealing assembly 430 includes a second connecting pipe 431 connected to the air outlet. A third flange 432 is fixedly provided at the end of the second connecting pipe 431 away from the plate 410. A sealing cover 433 is provided on the side of the third flange 432 away from the second connecting pipe 431. The third flange 432 and the sealing cover 433 are connected by a second connector 434.

[0041] Please see Figure 1 and Figure 4 As shown, in order to prevent gas from being discharged from the outlet of the heating channel 420, a second connecting pipe 431 is provided at the outlet of the heating channel 420, and a third flange 432 is fixedly provided at the end of the second connecting pipe 431. In order to prevent gas from leaking out from the position of the third flange 432, a sealing cover 433 is provided at the third flange 432. The sealing cover 433 seals the third flange 432 to prevent gas from leaking out.

[0042] Furthermore, to prevent the third flange 432 from separating from the sealing cover 433, the third flange 432 and the sealing cover 433 are fastened together by a second connector 434. Specifically, the second connector 434 can be composed of bolts and nuts, and corresponding holes are provided on both the sealing cover 433 and the third flange 432 to facilitate the insertion of bolts. The third flange 432 and the sealing cover 433 are fastened together with the cooperation of bolts and nuts.

[0043] In this embodiment, both the third flange 432 and the sealing cover 433 are square.

[0044] In some embodiments, a sealing piece 435 is provided at the connection between the third flange 432 and the sealing cover 433.

[0045] Please see Figure 5 As shown, in order to prevent gas leakage between the third flange 432 and the sealing cover 433, a sealing plate 435 is provided between the third flange 432 and the sealing cover 433. The sealing plate 435 completely seals the outlet of the second connecting pipe 431 to prevent gas leakage.

[0046] For example, the sealing piece 435 can be a rubber pad, which covers and seals the outlet of the second connecting pipe 431 under the clamping force of the connection between the third flange 432 and the sealing cover 433.

[0047] In some embodiments, the outer diameter of the sealing piece 435 is D1, and the inner diameter of the second connecting pipe 431 is D2, satisfying that D1 > D2.

[0048] In order to completely seal the outlet of the second connecting pipe 431, the outer diameter of the sealing plate 435 needs to be larger than the outlet diameter of the second connecting pipe 431, that is, D1>D2 must be satisfied to completely cover the second connecting pipe 431.

[0049] This embodiment also provides a gas leak detection system, which includes a gas leak detection device as described above and a gas source. The gas source is connected to the air inlet pipe 100 and can be an air compressor, a device capable of generating a certain gas pressure.

[0050] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0051] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A gas leak detection device, characterized in that, include: An air intake pipe (100) is connected to a heating plate (400). A valve (200) is disposed on the path of the air intake pipe (100) and is used to control the opening and closing of the air intake pipe (100); Pressure gauge (300) is disposed on the air inlet pipe (100) and is located between the valve (200) and the heating plate (400).

2. The gas leak detection device according to claim 1, characterized in that, The heating plate (400) includes a plate body (410), in which a heating channel (420) is provided. The heating channel (420) has an air inlet and an air outlet. A connecting component (110) is provided at the air inlet. The air inlet pipe (100) is connected to the heating channel (420) through the connecting component (110). A sealing component (430) is provided at the air outlet. The sealing component (430) is used to seal the air outlet.

3. The gas leak detection device according to claim 2, characterized in that, The heating channel (420) is arranged in a serpentine shape on the plate (410).

4. The gas leak detection device according to claim 2, characterized in that, The connecting assembly (110) includes a first connecting pipe (111) connected to the air inlet. The end of the first connecting pipe (111) facing away from the plate (410) is provided with a first flange (112). The end of the air inlet pipe (100) facing the plate (410) is provided with a second flange (113) adapted to the first flange (112). The first flange (112) and the second flange (113) are connected by a first connector (114).

5. The gas leak detection device according to claim 4, characterized in that, A sealing element (115) is provided at the connection between the first flange (112) and the second flange (113).

6. The gas leak detection device according to claim 4, characterized in that, Both the first flange (112) and the second flange (113) are circular or polygonal.

7. The gas leak detection device according to claim 2, characterized in that, The sealing assembly (430) includes a second connecting pipe (431) connected to the air outlet. A third flange (432) is fixedly provided at the end of the second connecting pipe (431) away from the plate (410). A sealing cover (433) is provided on the side of the third flange (432) away from the second connecting pipe (431). The third flange (432) and the sealing cover (433) are connected by a second connector (434).

8. The gas leak detection device according to claim 7, characterized in that, A sealing plate (435) is provided at the connection between the third flange (432) and the sealing cover (433).

9. The gas leak detection device according to claim 8, characterized in that, The outer diameter of the sealing piece (435) is D1, and the inner diameter of the second connecting tube (431) is D2, satisfying the condition: D1 > D2.

10. A gas leak detection system, characterized in that, include: Gas leak detection device according to any one of claims 1 to 9; An air source is connected to the air intake pipe (100).

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