A protective device for an oxygen concentration meter probe
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-04
- Publication Date
- 2026-08-14
AI Technical Summary
氧浓仪测量氧化锆测试探头安装于测量管顶端，直接随探头深入炉膛内，炉膛内高温及其恶略环境使氧化锆探头老化、磨损、腐蚀严重，严重影响探头的测量准确性，降低探头的使用寿命，极大影响裂解炉的正常使用
本申请中烟道封闭端与裂解炉连接形成气体导流通道，将炉内气体定向引入第一管路；循环气泵驱动气体依次流经第一管路、第二管路进入保护箱外腔室，形成强制循环气流；保护箱通过外腔室与内腔室的连通结构，使气体经外腔室底部进入后在内腔室周部形成环流缓冲层，避免高温气体直接冲击探头；探头本体工作端延伸至内腔室中心，处于环流气体的包裹中，通过气体流动带走热量并稀释腐蚀性成分；回流管将内腔室顶部气体导回循环系统，维持气体动态平衡。
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Figure CN224636506U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of auxiliary equipment technology for oxygen concentration meters, and in particular to a protective device for an oxygen concentration meter probe. Background Technology
[0002] In the chemical industry, the use of high-temperature pyrolysis to treat waste sulfuric acid is gradually being adopted. Within the pyrolysis furnace, the high temperature is typically provided by burning kerosene or natural gas. Therefore, determining the oxygen content within the furnace is crucial, as the oxygen concentration directly affects the safety and smooth progress of the high-temperature decomposition.
[0003] However, because the waste sulfuric acid in the pyrolysis furnace decomposes at a temperature of 1000-1100°C to produce a sulfur dioxide mixture, the oxygen concentration meter is sealed inside the furnace. The zirconia test probe of the oxygen concentration meter is installed at the top of the measuring tube and extends directly into the furnace. The high temperature and harsh environment inside the furnace cause severe aging, wear, and corrosion of the zirconia probe, seriously affecting the measurement accuracy of the probe, reducing its service life, and greatly impacting the normal operation of the pyrolysis furnace.
[0004] Therefore, there is an urgent need for a protective device for the oxygen concentration meter probe to solve the above problems. Utility Model Content
[0005] This application provides a protective device for an oxygen concentration meter probe, which aims to extend the probe's service life while ensuring the accuracy of the probe's oxygen concentration measurement.
[0006] To achieve the above objectives, this application provides the following technical solutions: A protective device for an oxygen concentration meter probe includes a flue, a first pipeline, a circulating air pump, a second pipeline, a probe body, a protective box, and a return pipe. One end of the flue is connected to the furnace cavity of the pyrolysis furnace, and the other end is closed. The inlet of the first pipe is connected to the interior of the flue; The input end of the circulating air pump is connected to the output end of the first pipeline; The input end of the second pipeline is connected to the output end of the circulating air pump; The protective box includes an outer chamber and an inner chamber. The bottom of the outer chamber is connected to the output end of the second pipeline, and the periphery of the inner chamber is connected to the outer chamber. The working end of the probe body passes through the outer chamber and extends to the center of the inner chamber; The output end of the reflux pipe passes through the top of the outer chamber and communicates with the top of the inner chamber.
[0007] Furthermore, it also includes a flow stabilizing component, which is fixedly installed at the connection between the first pipeline and the flue. The current stabilizing component includes a mounting bracket, a bearing, and multiple fan blades; The periphery of the mounting bracket is fixedly connected to the inner wall of the input end of the first pipeline; The bearing is rotatably positioned at the center of the mounting bracket; The plurality of fan blades are arranged in a ring at equal intervals along the axis of the bearing.
[0008] Furthermore, a liquid storage tank is connected to the periphery of the first pipeline, and the inlet of the liquid storage tank is set at an angle to the inner wall of the first pipeline.
[0009] Furthermore, an electromagnetic flow meter is fixedly installed around the periphery of the first pipeline, and the electromagnetic flow meter is located between the liquid storage tank and the circulating air pump.
[0010] Furthermore, the liquid storage tank and the first pipeline are an integral structure.
[0011] Furthermore, a plurality of fins are fixedly disposed between the inner wall of the outer chamber and the outer wall of the inner chamber, and the plurality of fins are all in a curved structure.
[0012] One or more technical solutions provided in the embodiments of this utility model have at least the following technical effects or advantages: In this application, the closed end of the flue is connected to the pyrolysis furnace to form a gas guiding channel, which directionally introduces the gas inside the furnace into the first pipeline; the circulating gas pump drives the gas to flow sequentially through the first pipeline and the second pipeline into the outer chamber of the protective box, forming a forced circulating airflow; the protective box, through the connecting structure between the outer chamber and the inner chamber, allows the gas to enter through the bottom of the outer chamber and form a circulating buffer layer around the inner chamber, preventing high-temperature gas from directly impacting the probe; the working end of the probe body extends to the center of the inner chamber, surrounded by the circulating gas, and carries away heat and dilutes corrosive components through gas flow; the return pipe guides the gas at the top of the inner chamber back to the circulation system, maintaining the dynamic balance of the gas. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments of this utility model or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 This is a structural schematic diagram of the assembled state provided in the embodiments of this application; Figure 2 This is a schematic diagram of the current stabilizing component provided in an embodiment of this application.
[0015] Icons: 1-Cracking furnace; 10-Flue; 20-First pipeline; 21-Storage tank; 22-Electromagnetic flowmeter; 23-Second pipeline; 30-Circulating air pump; 40-Probe body; 50-Protection box; 51-Outer chamber; 52-Inner chamber; 53-Fin; 60-Return pipe; 70-Flow stabilizing assembly; 71-Mounting bracket; 72-Bearing; 73-Fan blade; Detailed Implementation The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.
[0016] In the description of the embodiments of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They 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 utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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 connection of two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.
[0017] Combination Figures 1-2As shown, a protective device for an oxygen concentration meter probe includes a flue 10, a first pipeline 20, a circulating air pump 30, a second pipeline, a probe body 40, a protective box 50, and a return pipe 60. One end of the flue 10 is connected to the furnace cavity of a pyrolysis furnace, and the other end is closed. The input end of the first pipeline 20 is connected to the interior of the flue 10. The input end of the circulating air pump 30 is connected to the output end of the first pipeline 20. The input end of the second pipeline is connected to the output end of the circulating air pump 30. The protective box 50 includes an outer chamber 51 and an inner chamber 52. The bottom of the outer chamber 51 is connected to the output end of the second pipeline, and the periphery of the inner chamber 52 is connected to the outer chamber 51. The working end of the probe body 40 passes through the outer chamber 51 and extends to the center of the inner chamber 52. The output end of the return pipe 60 passes through the top of the outer chamber 51 and is connected to the top of the inner chamber 52.
[0018] In the above scheme, the closed end of the flue 10 is connected to the pyrolysis furnace to form a gas guiding channel, which directionally introduces the gas in the furnace into the first pipeline 20; the circulating gas pump 30 drives the gas to flow sequentially through the first pipeline 20 and the second pipeline into the outer chamber 51 of the protection box 50, forming a forced circulating airflow; the protection box 50, through the connecting structure between the outer chamber 51 and the inner chamber 52, allows the gas to enter through the bottom of the outer chamber 51 and form a circulating buffer layer around the inner chamber 52, avoiding direct impact of high-temperature gas on the probe; the working end of the probe body 40 extends to the center of the inner chamber 52, and is surrounded by the circulating gas, which carries away heat and dilutes corrosive components through gas flow; the return pipe 60 guides the gas at the top of the inner chamber 52 back to the circulation system to maintain the dynamic balance of the gas.
[0019] It also includes a flow stabilizing component 70, which is fixedly disposed at the connection between the first pipe 20 and the flue 10; wherein, the flow stabilizing component 70 includes a mounting frame 71, a bearing 72 and a plurality of fan blades 73; the periphery of the mounting frame 71 is fixedly connected to the inner wall of the input end of the first pipe 20; the bearing 72 is rotatably disposed at the center of the mounting frame 71; the plurality of fan blades 73 are arranged in a ring at equal intervals along the axis of the bearing 72.
[0020] In the above scheme, the fixed connection between the mounting bracket 71 and the inner wall of the pipeline ensures the structural stability of the flow stabilization component 70 and avoids component displacement caused by airflow impact. The rotational setting of the bearing 72 allows the fan blades 73 to rotate freely according to the dynamics of the airflow, and the rotational motion of the fan blades 73 transforms the originally turbulent airflow into axial flow. The special arrangement of multiple fan blades 73 in a ring at equal intervals along the axis can evenly disperse the airflow pressure, form a laminar flow effect, effectively reduce the pulsation amplitude of the gas flow velocity, and keep the airflow entering the protection box 50 in a stable state, thereby creating a stable detection environment for the probe and improving the accuracy of oxygen concentration measurement.
[0021] The periphery of the first pipeline 20 is connected to a liquid storage tank 21, and the inlet of the liquid storage tank 21 is set at an angle to the inner wall of the first pipeline 20.
[0022] In the above scheme, a liquid storage tank 21 is added to the side of the first gas circulation pipeline 20, allowing the liquid medium to enter the pipeline through the liquid storage tank 21. The angle between the liquid inlet of the liquid storage tank 21 and the inner wall of the pipeline changes the interaction between the liquid inflow direction and the gas flow direction, avoiding airflow disturbance or liquid splashing caused by direct vertical injection of liquid. At the same time, the negative pressure effect generated by the gas flow promotes the stable and uniform mixing of liquid into the airflow, ensuring both the effective introduction of the liquid medium and the stability of the gas circulation system.
[0023] An electromagnetic flow meter 22 is fixedly installed around the periphery of the first pipeline 20, and the electromagnetic flow meter 22 is located between the liquid storage tank 21 and the circulating air pump 30.
[0024] In the above scheme, by installing an electromagnetic flowmeter 22 in the first pipeline 20 and defining its installation position, accurate monitoring of the liquid injection flow rate is achieved. The electromagnetic flowmeter 22 is fixedly installed around the periphery of the first pipeline 20, enabling real-time detection of the liquid flow status in the injection pipeline from the storage tank 21, thus preventing load fluctuations in the circulating air pump 30 due to sudden changes in liquid flow rate. Placing the electromagnetic flowmeter 22 at a specific location between the storage tank 21 and the circulating air pump 30 not only accurately measures the injected liquid flow rate but also prevents pressure fluctuations caused by the operation of the circulating air pump 30 from affecting the measurement accuracy.
[0025] The liquid storage tank 21 and the first pipeline 20 are an integral structure.
[0026] In the above solution, by designing the liquid storage tank 21 and the first pipeline 20 as an integrated structure, the interface gaps present in the traditional split connection are eliminated, thereby preventing liquid leakage during transportation. Furthermore, the integrated structure of the liquid storage tank 21 and the first pipeline 20 enhances the overall mechanical strength, reduces the risk of loosening at the connection due to vibration or temperature changes, and ensures the stability of media transmission between the liquid storage tank 21 and the pipeline.
[0027] A plurality of fins 53 are fixedly disposed between the inner wall of the outer chamber 51 and the outer wall of the inner chamber 52, and the plurality of fins 53 are all curved.
[0028] In the above scheme, by setting a curved fin structure 53 between the inner and outer chambers 51, the heat conduction and airflow distribution inside the protective box 50 are enhanced. Compared with the traditional straight fin structure, the curved fin 53 can extend the flow path of gas between chambers, forming a turbulent effect, thereby improving heat exchange efficiency. The curved surface of the fin 53 can guide the high-temperature gas to flow along a specific trajectory, avoiding the direct impact of local high temperature accumulation on the probe. At the same time, the multi-fin layout increases the heat dissipation area, quickly transferring the heat from the central probe area of the inner chamber 52 to the circulating airflow in the outer chamber 51, forming a dynamic thermal balance. This not only ensures the temperature stability of the probe's working environment, but also reduces the residence time of corrosive gases on the probe surface by optimizing the airflow pattern.
[0029] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.
[0030] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.
Claims
1. A protection device for an oxygen analyser probe, characterised in that, It includes a flue (10), a first pipeline (20), a circulating air pump (30), a second pipeline, a probe body (40), a protection box (50), and a return pipe (60); One end of the flue (10) is connected to the furnace cavity of the pyrolysis furnace, and the other end is closed. The input end of the first pipe (20) is connected to the interior of the flue (10); The input end of the circulating air pump (30) is connected to the output end of the first pipeline (20); The input end of the second pipeline is connected to the output end of the circulating air pump (30); The protective box (50) includes an outer chamber (51) and an inner chamber (52). The bottom of the outer chamber (51) is connected to the output end of the second pipeline, and the periphery of the inner chamber (52) is connected to the outer chamber (51). The working end of the probe body (40) passes through the outer chamber (51) and extends to the center of the inner chamber (52); The output end of the return pipe (60) passes through the top of the outer chamber (51) and communicates with the top of the inner chamber (52).
2. The protection device for an oxygen concentrator probe according to claim 1, characterized in that, It also includes a flow stabilizing component (70), which is fixedly disposed at the connection between the first pipeline (20) and the flue (10); The current stabilizing component (70) includes a mounting bracket (71), a bearing (72), and multiple fan blades (73). The periphery of the mounting bracket (71) is fixedly connected to the inner wall of the input end of the first pipeline (20); The bearing (72) is rotatably disposed at the center of the mounting bracket (71); The plurality of the fan blades (73) are arranged in a ring at equal intervals along the axis of the bearing (72).
3. The protection device for an oxygen concentrator probe of claim 1, wherein, The periphery of the first pipeline (20) is connected to a liquid storage tank (21), and the inlet of the liquid storage tank (21) is set at an angle to the inner wall of the first pipeline (20).
4. The protection device for an oxygen concentrator probe of claim 3, wherein, An electromagnetic flow meter (22) is fixedly installed around the periphery of the first pipeline (20), and the electromagnetic flow meter (22) is located between the liquid storage tank (21) and the circulating air pump (30).
5. The protection device for an oxygen concentrator probe of claim 4, wherein, The liquid storage tank (21) and the first pipeline (20) are an integral structure.
6. The oxygen concentrator probe protection apparatus of claim 1, wherein, Multiple fins (53) are fixedly disposed between the inner wall of the outer chamber (51) and the outer wall of the inner chamber (52), and the multiple fins (53) are all curved.