High-success-rate ignition detector

Abstract

The utility model discloses a high-success-rate ignition detector. The high-success-rate ignition detector comprises a main body unit, a flow path unit and an ignition unit, the main body unit comprises a detector valve body, and a nozzle is arranged on the detector valve body and used for spraying mixed gas; the flow path unit comprises a main flow path and a bypass, a hydrogen main sample inlet and an air main sample inlet are formed in the main flow path, the bypass and the main flow path are arranged in parallel, a hydrogen bypass sample inlet and an air bypass sample inlet are formed in the bypass, and two-way ball valves are arranged on the hydrogen bypass sample inlet and the air bypass sample inlet; a damping pipe is further arranged on the bypass and used for adjusting the ratio of hydrogen entering the detector valve body; the ignition unit comprises an ignition wire and a temperature measuring wire which are arranged on the detector valve body, and the temperature measuring wire is arranged above the ignition wire. By designing the bypasses arranged in parallel, when the main flow path breaks down, the main flow path can be rapidly switched to the bypasses, normal introduction and ignition of mixed gas are ensured, and therefore the reliability of the detector is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of detector technology, and in particular to a detector with a high success rate of ignition. Background Technology

[0002] In the field of gas detection and analysis, ignition detectors are commonly used devices. Their main function is to determine the presence and concentration of a gas by igniting a gas mixture. Traditional ignition detectors are typically designed with only a single main path (e.g., Figure 2 As shown, this is used to introduce the mixed gas and ignite it. However, this design has a significant drawback: once the main flow path malfunctions, such as blockage or leakage, the entire ignition detector will fail to function properly, leading to the interruption or failure of the detection task and affecting the ignition success rate of the ignition detector. Utility Model Content

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0004] Therefore, in order to solve the above-mentioned technical problems, this utility model provides the following technical solution: a detector with high success rate ignition, comprising a main body unit, a flow path unit and an ignition unit;

[0005] The main unit includes a detector valve body, on which a nozzle is arranged for spraying out the mixed gas;

[0006] The flow path unit includes a main flow path and a bypass flow path. The main flow path is provided with a main hydrogen inlet and a main air inlet. The bypass flow path is arranged in parallel with the main flow path. The bypass flow path is provided with a side hydrogen inlet and a side air inlet. A two-way ball valve is arranged on both the side hydrogen inlet and the side air inlet. A damping tube is also arranged on the bypass flow path to adjust the hydrogen-air ratio entering the detector valve body.

[0007] The ignition unit includes an ignition wire arranged in the detector valve body for igniting the mixed gas sprayed through the nozzle; the ignition unit also includes a temperature measuring wire arranged above the ignition wire for detecting the temperature after ignition to determine whether ignition is successful.

[0008] When the main flow path is working normally, the two-way ball valve of the bypass is closed. When the main flow path malfunctions, the two-way ball valve on the bypass is opened, and the mixed gas enters the detector valve body through the bypass. The hydrogen-air ratio is adjusted through the damping tube to achieve normal ignition. At the same time, the temperature measuring line detects the ignition temperature, and the results are combined with the temperature baseline to confirm whether the ignition is successful.

[0009] As a preferred embodiment of the high-success-rate ignition detector of this utility model, the main unit further includes a heating block for preheating the mixed gas before ignition to improve the ignition success rate.

[0010] In a preferred embodiment of the high-success-rate ignition detector of this utility model, the outlet sides of both the bypass and main flow paths are arranged inside the heating block, which is located at the bottom of the detector valve body.

[0011] As a preferred embodiment of the high-success-rate ignition detector of this utility model, the nozzle is arranged inside the detector valve body and is located below the ignition wire.

[0012] As a preferred embodiment of the high-success-rate ignition detector of this utility model, the bypass and main flow are respectively arranged on both sides of the detector valve body, and the bottom of the detector valve body is connected to the outlet end of the bypass and main flow.

[0013] The beneficial effects of this utility model are:

[0014] 1. This utility model, through the design of a parallel bypass, can quickly switch to the bypass when the main path fails, ensuring the normal introduction and ignition of the mixed gas, thereby greatly improving the reliability of the detector.

[0015] 2. This invention improves the ignition success rate by introducing a damping tube to adjust the hydrogen-air ratio and a heating block to preheat the mixed gas, resulting in a more reasonable gas ratio and a more suitable temperature.

[0016] 3. This utility model combines the judgment of temperature measuring line and temperature measuring baseline to intelligently confirm whether ignition is successful, avoiding the errors and uncertainties of manual judgment. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the overall structure of the existing technology.

[0020] In the diagram: 100, main unit; 101, detector valve body; 102, nozzle; 103, heating block;

[0021] 200. Flow path unit; 201. Main flow path; 2011. Main hydrogen inlet; 2012. Main air inlet; 202. Bypass; 2021. Bypass hydrogen inlet; 2022. Bypass air inlet; 2023. Two-way ball valve; 2024. Damping tube;

[0022] 300, Ignition unit; 301, Ignition wire; 302, Temperature sensing wire. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0026] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing embodiments of the present invention, cross-sectional views of device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0027] Reference Figure 1 As an embodiment of the present invention, a detector with a high success rate of ignition is provided, including a main body unit 100, a flow path unit 200 and an ignition unit 300;

[0028] The main unit 100 includes a detector valve body 101, on which a nozzle 102 is arranged for spraying out a mixed gas; the main unit 100 also includes a heating block 103 for preheating the mixed gas before ignition to improve the ignition success rate; the nozzle 102 is arranged inside the detector valve body 101 and is located below the ignition wire 301.

[0029] The flow path unit 200 includes a main flow path 201 and a bypass 202. The main flow path 201 is equipped with a hydrogen main inlet 2011 and an air main inlet 2012. The bypass 202 is arranged in parallel with the main flow path 201. The bypass 202 is equipped with a hydrogen bypass inlet 2021 and an air bypass inlet 2022. Both the hydrogen bypass inlet 2021 and the air bypass inlet 2022 are equipped with two-way ball valves 2023. A damping tube 2024 is also arranged on the detector valve body 101 to adjust the hydrogen-air ratio entering the detector valve body 101; the outlet sides of the bypass 202 and the main flow 201 are both arranged inside the heating block 103, which is located at the bottom of the detector valve body 101; the bypass 202 and the main flow 201 are respectively arranged on both sides of the detector valve body 101, and the bottom of the detector valve body 101 is connected to the outlet ends of the bypass 202 and the main flow 201.

[0030] The ignition unit 300 includes an ignition wire 301 arranged in the detector valve body 101 for igniting the mixed gas sprayed through the nozzle 102; the ignition unit 300 also includes a temperature measuring wire 302 arranged above the ignition wire 301 for detecting the temperature after ignition to determine whether ignition is successful.

[0031] When the main flow path 201 is working normally, the two-way ball valve 2023 of the bypass 202 is closed. When the main flow path 201 malfunctions, the two-way ball valve 2023 on the bypass 202 is opened, and the mixed gas enters the detector valve body 101 through the bypass 202. The hydrogen-air ratio is adjusted through the damping tube 2024 to achieve normal ignition. At the same time, the temperature measuring line 302 detects the ignition temperature, and the temperature is combined with the baseline temperature measurement to jointly confirm whether the ignition is successful.

[0032] The implementation steps of this detector are as follows:

[0033] Introduction of mixed gas: The main flow path 201 is equipped with a hydrogen main inlet 2011 and an air main inlet 2012 for introducing mixed gas; the bypass path 202 is arranged in parallel with the main flow path 201, and is equipped with a hydrogen bypass inlet 2021 and an air bypass inlet 2022, which are also used to introduce mixed gas; the two-way ball valve 2023 on the bypass path is used to control the opening and closing of the bypass path.

[0034] Adjustment of mixed gas: The damping tube 2024 is arranged on the bypass 202 to adjust the hydrogen-air ratio entering the detector valve body 101 to ensure that the mixed gas ratio is reasonable.

[0035] Preheating of the gas mixture: The heating block 103 is arranged at the bottom of the detector valve body 101 to preheat the gas mixture before ignition, so as to improve the ignition success rate.

[0036] Ignition and temperature detection: The ignition wire 301 is arranged inside the detector valve body 101 to ignite the mixed gas sprayed by the nozzle 102; the temperature measuring wire 302 is arranged above the ignition wire 301 to detect the temperature after ignition, and combined with the temperature baseline judgment to jointly confirm whether the ignition is successful.

[0037] Fault switching:

[0038] When the main flow 201 is working normally, the two-way ball valve 2023 of the bypass 202 is in the closed state;

[0039] When the main flow path 201 malfunctions, the two-way ball valve 2023 on the bypass 202 is opened, and the mixed gas enters the detector valve body 101 through the bypass 202. The hydrogen-air ratio is adjusted through the damping tube 2024 to achieve normal ignition.

[0040] In this embodiment: the damping tube 2024 is a component commonly used in gas chromatographs or other gas processing systems, especially in detectors with high success rate ignition, where it plays a key regulating role;

[0041] A damping tube 2024 typically consists of a long, narrow tube and a movable piston (not shown) (or other form of flow control mechanism). When gas enters the damping tube 2024 from one end, the piston moves under the force of the gas, thereby changing the cross-sectional area of ​​the tube and thus regulating the gas flow rate.

[0042] The damping tube 2024 achieves the function of adjusting the hydrogen-air ratio as follows:

[0043] Piston movement: As hydrogen and air enter the damping tube 2024 through their respective inlets, they are regulated by the piston within the tube. The position and speed of the piston can be adjusted as needed to change the mixing ratio of hydrogen and air within the tube.

[0044] Pressure differential adjustment: The damping tube 2024 controls the gas flow rate by adjusting the pressure differential between the injection port and the detector valve body 101. When it is necessary to increase the proportion of hydrogen, the pressure differential between the hydrogen injection port and the damping tube 2024 can be decreased to allow hydrogen to enter the detector valve body 101 at a faster rate; conversely, when it is necessary to increase the proportion of air, the pressure differential between the corresponding air injection port and the damping tube 2024 can be increased.

[0045] Precise flow control: The design of the damping tube 2024 allows for precise regulation of the flow rates of hydrogen and air. By adjusting the position of the piston or changing the cross-sectional area of ​​the tube, the flow rate of each gas can be precisely controlled, thereby achieving precise regulation of the hydrogen-air ratio.

[0046] The GT550R series can be used: This series of damping tubes 2024 is manufactured by Shanghai Puli Gas Technology Co., Ltd., and has various models such as GT550R-020, GT550R-035, GT550R-70, GT550R-100, etc. Their dimensions and gas flow rates at the front-end pressure are different to meet different application requirements; these damping tubes 2024 are commonly used in medical devices, analytical instruments, pneumatic regulators, and gas path resistance balancing in pipelines or chromatographic columns.

[0047] The models listed above are for illustrative purposes only and do not represent all available 2024 damping tube models on the market. When selecting a 2024 damping tube, factors such as specific application requirements, working environment, and budget should be considered comprehensively.

[0048] It is worth noting that the entire device is controlled by a controller. Since the controller is a common device and belongs to existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A detector with a high success rate of ignition, characterized in that: It includes a main body unit (100), a flow path unit (200), and an ignition unit (300); The main unit (100) includes a detector valve body (101), on which a nozzle (102) is arranged for spraying out a mixed gas; The flow path unit (200) includes a main flow path (201) and a bypass path (202). The main flow path (201) is provided with a hydrogen main inlet (2011) and an air main inlet (2012). The bypass path (202) is arranged in parallel with the main flow path (201). The bypass path (202) is provided with a hydrogen bypass inlet (2021) and an air bypass inlet (2022). Both the hydrogen bypass inlet (2021) and the air bypass inlet (2022) are provided with two-way ball valves (2023). The bypass path (202) is also provided with a damping tube (2024) for adjusting the hydrogen-air ratio entering the detector valve body (101). The ignition unit (300) includes an ignition wire (301) arranged in the detector valve body (101) for igniting the mixed gas sprayed through the nozzle (102); the ignition unit (300) also includes a temperature measuring wire (302) arranged above the ignition wire (301) for detecting the temperature after ignition to determine whether the ignition is successful. When the main flow path (201) is working normally, the two-way ball valve (2023) of the bypass (202) is closed. When the main flow path (201) malfunctions, the two-way ball valve (2023) on the bypass (202) is opened, and the mixed gas enters the detector valve body (101) through the bypass (202), and the hydrogen-air ratio is adjusted through the damping tube (2024) to achieve normal ignition. At the same time, the temperature measuring line (302) detects the ignition temperature, and the temperature is combined with the temperature baseline to jointly confirm whether the ignition is successful.

2. The detector with high success rate ignition as described in claim 1, characterized in that: The main unit (100) also includes a heating block (103) for preheating the gas mixture before ignition to improve the ignition success rate.

3. The detector with high success rate ignition as described in claim 2, characterized in that: The outlet sides of both the bypass (202) and the main flow (201) are arranged inside the heating block (103), which is located at the bottom of the detector valve body (101).

4. The detector with high success rate ignition as described in claim 1, characterized in that: The nozzle (102) is arranged inside the detector valve body (101) and is located below the ignition wire (301).

5. The detector with high success rate ignition as described in claim 1, characterized in that: The bypass (202) and the main flow (201) are respectively arranged on both sides of the detector valve body (101), and the bottom of the detector valve body (101) is connected to the outlet end of the bypass (202) and the main flow (201).

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